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authorDimitri Sokolyuk <demon@dim13.org>2018-09-27 20:03:23 +0200
committerDimitri Sokolyuk <demon@dim13.org>2018-09-27 20:03:23 +0200
commit14bb08c1df8db9ec6c8a05520d4eee67971235d9 (patch)
treefc820e59c26ed4c5e87e65737909b47959f0faa5 /vendor/golang.org/x/image/draw/impl.go
parent54eb169e8fc9bc0357139e7c259e977b184f8fbb (diff)
mod tidy
Diffstat (limited to 'vendor/golang.org/x/image/draw/impl.go')
-rw-r--r--vendor/golang.org/x/image/draw/impl.go6670
1 files changed, 0 insertions, 6670 deletions
diff --git a/vendor/golang.org/x/image/draw/impl.go b/vendor/golang.org/x/image/draw/impl.go
deleted file mode 100644
index 75498ad..0000000
--- a/vendor/golang.org/x/image/draw/impl.go
+++ /dev/null
@@ -1,6670 +0,0 @@
-// generated by "go run gen.go". DO NOT EDIT.
-
-package draw
-
-import (
- "image"
- "image/color"
- "math"
-
- "golang.org/x/image/math/f64"
-)
-
-func (z nnInterpolator) Scale(dst Image, dr image.Rectangle, src image.Image, sr image.Rectangle, op Op, opts *Options) {
- // Try to simplify a Scale to a Copy when DstMask is not specified.
- // If DstMask is not nil, Copy will call Scale back with same dr and sr, and cause stack overflow.
- if dr.Size() == sr.Size() && (opts == nil || opts.DstMask == nil) {
- Copy(dst, dr.Min, src, sr, op, opts)
- return
- }
-
- var o Options
- if opts != nil {
- o = *opts
- }
-
- // adr is the affected destination pixels.
- adr := dst.Bounds().Intersect(dr)
- adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP)
- if adr.Empty() || sr.Empty() {
- return
- }
- // Make adr relative to dr.Min.
- adr = adr.Sub(dr.Min)
- if op == Over && o.SrcMask == nil && opaque(src) {
- op = Src
- }
-
- // sr is the source pixels. If it extends beyond the src bounds,
- // we cannot use the type-specific fast paths, as they access
- // the Pix fields directly without bounds checking.
- //
- // Similarly, the fast paths assume that the masks are nil.
- if o.DstMask != nil || o.SrcMask != nil || !sr.In(src.Bounds()) {
- switch op {
- case Over:
- z.scale_Image_Image_Over(dst, dr, adr, src, sr, &o)
- case Src:
- z.scale_Image_Image_Src(dst, dr, adr, src, sr, &o)
- }
- } else if _, ok := src.(*image.Uniform); ok {
- Draw(dst, dr, src, src.Bounds().Min, op)
- } else {
- switch op {
- case Over:
- switch dst := dst.(type) {
- case *image.RGBA:
- switch src := src.(type) {
- case *image.NRGBA:
- z.scale_RGBA_NRGBA_Over(dst, dr, adr, src, sr, &o)
- case *image.RGBA:
- z.scale_RGBA_RGBA_Over(dst, dr, adr, src, sr, &o)
- default:
- z.scale_RGBA_Image_Over(dst, dr, adr, src, sr, &o)
- }
- default:
- switch src := src.(type) {
- default:
- z.scale_Image_Image_Over(dst, dr, adr, src, sr, &o)
- }
- }
- case Src:
- switch dst := dst.(type) {
- case *image.RGBA:
- switch src := src.(type) {
- case *image.Gray:
- z.scale_RGBA_Gray_Src(dst, dr, adr, src, sr, &o)
- case *image.NRGBA:
- z.scale_RGBA_NRGBA_Src(dst, dr, adr, src, sr, &o)
- case *image.RGBA:
- z.scale_RGBA_RGBA_Src(dst, dr, adr, src, sr, &o)
- case *image.YCbCr:
- switch src.SubsampleRatio {
- default:
- z.scale_RGBA_Image_Src(dst, dr, adr, src, sr, &o)
- case image.YCbCrSubsampleRatio444:
- z.scale_RGBA_YCbCr444_Src(dst, dr, adr, src, sr, &o)
- case image.YCbCrSubsampleRatio422:
- z.scale_RGBA_YCbCr422_Src(dst, dr, adr, src, sr, &o)
- case image.YCbCrSubsampleRatio420:
- z.scale_RGBA_YCbCr420_Src(dst, dr, adr, src, sr, &o)
- case image.YCbCrSubsampleRatio440:
- z.scale_RGBA_YCbCr440_Src(dst, dr, adr, src, sr, &o)
- }
- default:
- z.scale_RGBA_Image_Src(dst, dr, adr, src, sr, &o)
- }
- default:
- switch src := src.(type) {
- default:
- z.scale_Image_Image_Src(dst, dr, adr, src, sr, &o)
- }
- }
- }
- }
-}
-
-func (z nnInterpolator) Transform(dst Image, s2d f64.Aff3, src image.Image, sr image.Rectangle, op Op, opts *Options) {
- // Try to simplify a Transform to a Copy.
- if s2d[0] == 1 && s2d[1] == 0 && s2d[3] == 0 && s2d[4] == 1 {
- dx := int(s2d[2])
- dy := int(s2d[5])
- if float64(dx) == s2d[2] && float64(dy) == s2d[5] {
- Copy(dst, image.Point{X: sr.Min.X + dx, Y: sr.Min.X + dy}, src, sr, op, opts)
- return
- }
- }
-
- var o Options
- if opts != nil {
- o = *opts
- }
-
- dr := transformRect(&s2d, &sr)
- // adr is the affected destination pixels.
- adr := dst.Bounds().Intersect(dr)
- adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP)
- if adr.Empty() || sr.Empty() {
- return
- }
- if op == Over && o.SrcMask == nil && opaque(src) {
- op = Src
- }
-
- d2s := invert(&s2d)
- // bias is a translation of the mapping from dst coordinates to src
- // coordinates such that the latter temporarily have non-negative X
- // and Y coordinates. This allows us to write int(f) instead of
- // int(math.Floor(f)), since "round to zero" and "round down" are
- // equivalent when f >= 0, but the former is much cheaper. The X--
- // and Y-- are because the TransformLeaf methods have a "sx -= 0.5"
- // adjustment.
- bias := transformRect(&d2s, &adr).Min
- bias.X--
- bias.Y--
- d2s[2] -= float64(bias.X)
- d2s[5] -= float64(bias.Y)
- // Make adr relative to dr.Min.
- adr = adr.Sub(dr.Min)
- // sr is the source pixels. If it extends beyond the src bounds,
- // we cannot use the type-specific fast paths, as they access
- // the Pix fields directly without bounds checking.
- //
- // Similarly, the fast paths assume that the masks are nil.
- if o.DstMask != nil || o.SrcMask != nil || !sr.In(src.Bounds()) {
- switch op {
- case Over:
- z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o)
- case Src:
- z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- } else if u, ok := src.(*image.Uniform); ok {
- transform_Uniform(dst, dr, adr, &d2s, u, sr, bias, op)
- } else {
- switch op {
- case Over:
- switch dst := dst.(type) {
- case *image.RGBA:
- switch src := src.(type) {
- case *image.NRGBA:
- z.transform_RGBA_NRGBA_Over(dst, dr, adr, &d2s, src, sr, bias, &o)
- case *image.RGBA:
- z.transform_RGBA_RGBA_Over(dst, dr, adr, &d2s, src, sr, bias, &o)
- default:
- z.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- default:
- switch src := src.(type) {
- default:
- z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- }
- case Src:
- switch dst := dst.(type) {
- case *image.RGBA:
- switch src := src.(type) {
- case *image.Gray:
- z.transform_RGBA_Gray_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case *image.NRGBA:
- z.transform_RGBA_NRGBA_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case *image.RGBA:
- z.transform_RGBA_RGBA_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case *image.YCbCr:
- switch src.SubsampleRatio {
- default:
- z.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case image.YCbCrSubsampleRatio444:
- z.transform_RGBA_YCbCr444_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case image.YCbCrSubsampleRatio422:
- z.transform_RGBA_YCbCr422_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case image.YCbCrSubsampleRatio420:
- z.transform_RGBA_YCbCr420_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case image.YCbCrSubsampleRatio440:
- z.transform_RGBA_YCbCr440_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- default:
- z.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- default:
- switch src := src.(type) {
- default:
- z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- }
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.Gray, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(sx) - src.Rect.Min.X)
- pr := uint32(src.Pix[pi]) * 0x101
- out := uint8(pr >> 8)
- dst.Pix[d+0] = out
- dst.Pix[d+1] = out
- dst.Pix[d+2] = out
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx)-src.Rect.Min.X)*4
- pa := uint32(src.Pix[pi+3]) * 0x101
- pr := uint32(src.Pix[pi+0]) * pa / 0xff
- pg := uint32(src.Pix[pi+1]) * pa / 0xff
- pb := uint32(src.Pix[pi+2]) * pa / 0xff
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx)-src.Rect.Min.X)*4
- pa := uint32(src.Pix[pi+3]) * 0x101
- pr := uint32(src.Pix[pi+0]) * pa / 0xff
- pg := uint32(src.Pix[pi+1]) * pa / 0xff
- pb := uint32(src.Pix[pi+2]) * pa / 0xff
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx)-src.Rect.Min.X)*4
- pr := uint32(src.Pix[pi+0]) * 0x101
- pg := uint32(src.Pix[pi+1]) * 0x101
- pb := uint32(src.Pix[pi+2]) * 0x101
- pa := uint32(src.Pix[pi+3]) * 0x101
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx)-src.Rect.Min.X)*4
- pr := uint32(src.Pix[pi+0]) * 0x101
- pg := uint32(src.Pix[pi+1]) * 0x101
- pb := uint32(src.Pix[pi+2]) * 0x101
- pa := uint32(src.Pix[pi+3]) * 0x101
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx) - src.Rect.Min.X)
- pj := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(sx) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pr := (pyy1 + 91881*pcr1) >> 8
- pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pb := (pyy1 + 116130*pcb1) >> 8
- if pr < 0 {
- pr = 0
- } else if pr > 0xffff {
- pr = 0xffff
- }
- if pg < 0 {
- pg = 0
- } else if pg > 0xffff {
- pg = 0xffff
- }
- if pb < 0 {
- pb = 0
- } else if pb > 0xffff {
- pb = 0xffff
- }
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_YCbCr422_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx) - src.Rect.Min.X)
- pj := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(sx))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pr := (pyy1 + 91881*pcr1) >> 8
- pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pb := (pyy1 + 116130*pcb1) >> 8
- if pr < 0 {
- pr = 0
- } else if pr > 0xffff {
- pr = 0xffff
- }
- if pg < 0 {
- pg = 0
- } else if pg > 0xffff {
- pg = 0xffff
- }
- if pb < 0 {
- pb = 0
- } else if pb > 0xffff {
- pb = 0xffff
- }
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_YCbCr420_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx) - src.Rect.Min.X)
- pj := ((sr.Min.Y+int(sy))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(sx))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pr := (pyy1 + 91881*pcr1) >> 8
- pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pb := (pyy1 + 116130*pcb1) >> 8
- if pr < 0 {
- pr = 0
- } else if pr > 0xffff {
- pr = 0xffff
- }
- if pg < 0 {
- pg = 0
- } else if pg > 0xffff {
- pg = 0xffff
- }
- if pb < 0 {
- pb = 0
- } else if pb > 0xffff {
- pb = 0xffff
- }
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_YCbCr440_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pi := (sr.Min.Y+int(sy)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx) - src.Rect.Min.X)
- pj := ((sr.Min.Y+int(sy))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(sx) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pr := (pyy1 + 91881*pcr1) >> 8
- pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pb := (pyy1 + 116130*pcb1) >> 8
- if pr < 0 {
- pr = 0
- } else if pr > 0xffff {
- pr = 0xffff
- }
- if pg < 0 {
- pg = 0
- } else if pg > 0xffff {
- pg = 0xffff
- }
- if pb < 0 {
- pb = 0
- } else if pb > 0xffff {
- pb = 0xffff
- }
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA()
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (nnInterpolator) scale_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA()
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (nnInterpolator) scale_Image_Image_Over(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx), smp.Y+sr.Min.Y+int(sy)).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- }
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA()
- if dstMask != nil {
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- }
- pa1 := 0xffff - pa
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- }
- }
-}
-
-func (nnInterpolator) scale_Image_Image_Src(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) {
- dw2 := uint64(dr.Dx()) * 2
- dh2 := uint64(dr.Dy()) * 2
- sw := uint64(sr.Dx())
- sh := uint64(sr.Dy())
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (2*uint64(dy) + 1) * sh / dh2
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- sx := (2*uint64(dx) + 1) * sw / dw2
- pr, pg, pb, pa := src.At(sr.Min.X+int(sx), sr.Min.Y+int(sy)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx), smp.Y+sr.Min.Y+int(sy)).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- }
- if dstMask != nil {
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA()
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- pa1 := 0xffff - ma
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- } else {
- dstColorRGBA64.R = uint16(pr)
- dstColorRGBA64.G = uint16(pg)
- dstColorRGBA64.B = uint16(pb)
- dstColorRGBA64.A = uint16(pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- }
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pi := (sy0-src.Rect.Min.Y)*src.Stride + (sx0 - src.Rect.Min.X)
- pr := uint32(src.Pix[pi]) * 0x101
- out := uint8(pr >> 8)
- dst.Pix[d+0] = out
- dst.Pix[d+1] = out
- dst.Pix[d+2] = out
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pi := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- pa := uint32(src.Pix[pi+3]) * 0x101
- pr := uint32(src.Pix[pi+0]) * pa / 0xff
- pg := uint32(src.Pix[pi+1]) * pa / 0xff
- pb := uint32(src.Pix[pi+2]) * pa / 0xff
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pi := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- pa := uint32(src.Pix[pi+3]) * 0x101
- pr := uint32(src.Pix[pi+0]) * pa / 0xff
- pg := uint32(src.Pix[pi+1]) * pa / 0xff
- pb := uint32(src.Pix[pi+2]) * pa / 0xff
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pi := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- pr := uint32(src.Pix[pi+0]) * 0x101
- pg := uint32(src.Pix[pi+1]) * 0x101
- pb := uint32(src.Pix[pi+2]) * 0x101
- pa := uint32(src.Pix[pi+3]) * 0x101
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pi := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- pr := uint32(src.Pix[pi+0]) * 0x101
- pg := uint32(src.Pix[pi+1]) * 0x101
- pb := uint32(src.Pix[pi+2]) * 0x101
- pa := uint32(src.Pix[pi+3]) * 0x101
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pi := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- pj := (sy0-src.Rect.Min.Y)*src.CStride + (sx0 - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pr := (pyy1 + 91881*pcr1) >> 8
- pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pb := (pyy1 + 116130*pcb1) >> 8
- if pr < 0 {
- pr = 0
- } else if pr > 0xffff {
- pr = 0xffff
- }
- if pg < 0 {
- pg = 0
- } else if pg > 0xffff {
- pg = 0xffff
- }
- if pb < 0 {
- pb = 0
- } else if pb > 0xffff {
- pb = 0xffff
- }
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_YCbCr422_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pi := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- pj := (sy0-src.Rect.Min.Y)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pr := (pyy1 + 91881*pcr1) >> 8
- pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pb := (pyy1 + 116130*pcb1) >> 8
- if pr < 0 {
- pr = 0
- } else if pr > 0xffff {
- pr = 0xffff
- }
- if pg < 0 {
- pg = 0
- } else if pg > 0xffff {
- pg = 0xffff
- }
- if pb < 0 {
- pb = 0
- } else if pb > 0xffff {
- pb = 0xffff
- }
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_YCbCr420_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pi := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- pj := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pr := (pyy1 + 91881*pcr1) >> 8
- pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pb := (pyy1 + 116130*pcb1) >> 8
- if pr < 0 {
- pr = 0
- } else if pr > 0xffff {
- pr = 0xffff
- }
- if pg < 0 {
- pg = 0
- } else if pg > 0xffff {
- pg = 0xffff
- }
- if pb < 0 {
- pb = 0
- } else if pb > 0xffff {
- pb = 0xffff
- }
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_YCbCr440_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pi := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- pj := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + (sx0 - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pr := (pyy1 + 91881*pcr1) >> 8
- pg := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pb := (pyy1 + 116130*pcb1) >> 8
- if pr < 0 {
- pr = 0
- } else if pr > 0xffff {
- pr = 0xffff
- }
- if pg < 0 {
- pg = 0
- } else if pg > 0xffff {
- pg = 0xffff
- }
- if pb < 0 {
- pb = 0
- } else if pb > 0xffff {
- pb = 0xffff
- }
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pr, pg, pb, pa := src.At(sx0, sy0).RGBA()
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (nnInterpolator) transform_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pr, pg, pb, pa := src.At(sx0, sy0).RGBA()
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (nnInterpolator) transform_Image_Image_Over(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) {
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pr, pg, pb, pa := src.At(sx0, sy0).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy0).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- }
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA()
- if dstMask != nil {
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- }
- pa1 := 0xffff - pa
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- }
- }
-}
-
-func (nnInterpolator) transform_Image_Image_Src(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) {
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx0 := int(d2s[0]*dxf+d2s[1]*dyf+d2s[2]) + bias.X
- sy0 := int(d2s[3]*dxf+d2s[4]*dyf+d2s[5]) + bias.Y
- if !(image.Point{sx0, sy0}).In(sr) {
- continue
- }
- pr, pg, pb, pa := src.At(sx0, sy0).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy0).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- }
- if dstMask != nil {
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA()
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- pa1 := 0xffff - ma
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- } else {
- dstColorRGBA64.R = uint16(pr)
- dstColorRGBA64.G = uint16(pg)
- dstColorRGBA64.B = uint16(pb)
- dstColorRGBA64.A = uint16(pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- }
- }
- }
-}
-
-func (z ablInterpolator) Scale(dst Image, dr image.Rectangle, src image.Image, sr image.Rectangle, op Op, opts *Options) {
- // Try to simplify a Scale to a Copy when DstMask is not specified.
- // If DstMask is not nil, Copy will call Scale back with same dr and sr, and cause stack overflow.
- if dr.Size() == sr.Size() && (opts == nil || opts.DstMask == nil) {
- Copy(dst, dr.Min, src, sr, op, opts)
- return
- }
-
- var o Options
- if opts != nil {
- o = *opts
- }
-
- // adr is the affected destination pixels.
- adr := dst.Bounds().Intersect(dr)
- adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP)
- if adr.Empty() || sr.Empty() {
- return
- }
- // Make adr relative to dr.Min.
- adr = adr.Sub(dr.Min)
- if op == Over && o.SrcMask == nil && opaque(src) {
- op = Src
- }
-
- // sr is the source pixels. If it extends beyond the src bounds,
- // we cannot use the type-specific fast paths, as they access
- // the Pix fields directly without bounds checking.
- //
- // Similarly, the fast paths assume that the masks are nil.
- if o.DstMask != nil || o.SrcMask != nil || !sr.In(src.Bounds()) {
- switch op {
- case Over:
- z.scale_Image_Image_Over(dst, dr, adr, src, sr, &o)
- case Src:
- z.scale_Image_Image_Src(dst, dr, adr, src, sr, &o)
- }
- } else if _, ok := src.(*image.Uniform); ok {
- Draw(dst, dr, src, src.Bounds().Min, op)
- } else {
- switch op {
- case Over:
- switch dst := dst.(type) {
- case *image.RGBA:
- switch src := src.(type) {
- case *image.NRGBA:
- z.scale_RGBA_NRGBA_Over(dst, dr, adr, src, sr, &o)
- case *image.RGBA:
- z.scale_RGBA_RGBA_Over(dst, dr, adr, src, sr, &o)
- default:
- z.scale_RGBA_Image_Over(dst, dr, adr, src, sr, &o)
- }
- default:
- switch src := src.(type) {
- default:
- z.scale_Image_Image_Over(dst, dr, adr, src, sr, &o)
- }
- }
- case Src:
- switch dst := dst.(type) {
- case *image.RGBA:
- switch src := src.(type) {
- case *image.Gray:
- z.scale_RGBA_Gray_Src(dst, dr, adr, src, sr, &o)
- case *image.NRGBA:
- z.scale_RGBA_NRGBA_Src(dst, dr, adr, src, sr, &o)
- case *image.RGBA:
- z.scale_RGBA_RGBA_Src(dst, dr, adr, src, sr, &o)
- case *image.YCbCr:
- switch src.SubsampleRatio {
- default:
- z.scale_RGBA_Image_Src(dst, dr, adr, src, sr, &o)
- case image.YCbCrSubsampleRatio444:
- z.scale_RGBA_YCbCr444_Src(dst, dr, adr, src, sr, &o)
- case image.YCbCrSubsampleRatio422:
- z.scale_RGBA_YCbCr422_Src(dst, dr, adr, src, sr, &o)
- case image.YCbCrSubsampleRatio420:
- z.scale_RGBA_YCbCr420_Src(dst, dr, adr, src, sr, &o)
- case image.YCbCrSubsampleRatio440:
- z.scale_RGBA_YCbCr440_Src(dst, dr, adr, src, sr, &o)
- }
- default:
- z.scale_RGBA_Image_Src(dst, dr, adr, src, sr, &o)
- }
- default:
- switch src := src.(type) {
- default:
- z.scale_Image_Image_Src(dst, dr, adr, src, sr, &o)
- }
- }
- }
- }
-}
-
-func (z ablInterpolator) Transform(dst Image, s2d f64.Aff3, src image.Image, sr image.Rectangle, op Op, opts *Options) {
- // Try to simplify a Transform to a Copy.
- if s2d[0] == 1 && s2d[1] == 0 && s2d[3] == 0 && s2d[4] == 1 {
- dx := int(s2d[2])
- dy := int(s2d[5])
- if float64(dx) == s2d[2] && float64(dy) == s2d[5] {
- Copy(dst, image.Point{X: sr.Min.X + dx, Y: sr.Min.X + dy}, src, sr, op, opts)
- return
- }
- }
-
- var o Options
- if opts != nil {
- o = *opts
- }
-
- dr := transformRect(&s2d, &sr)
- // adr is the affected destination pixels.
- adr := dst.Bounds().Intersect(dr)
- adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP)
- if adr.Empty() || sr.Empty() {
- return
- }
- if op == Over && o.SrcMask == nil && opaque(src) {
- op = Src
- }
-
- d2s := invert(&s2d)
- // bias is a translation of the mapping from dst coordinates to src
- // coordinates such that the latter temporarily have non-negative X
- // and Y coordinates. This allows us to write int(f) instead of
- // int(math.Floor(f)), since "round to zero" and "round down" are
- // equivalent when f >= 0, but the former is much cheaper. The X--
- // and Y-- are because the TransformLeaf methods have a "sx -= 0.5"
- // adjustment.
- bias := transformRect(&d2s, &adr).Min
- bias.X--
- bias.Y--
- d2s[2] -= float64(bias.X)
- d2s[5] -= float64(bias.Y)
- // Make adr relative to dr.Min.
- adr = adr.Sub(dr.Min)
- // sr is the source pixels. If it extends beyond the src bounds,
- // we cannot use the type-specific fast paths, as they access
- // the Pix fields directly without bounds checking.
- //
- // Similarly, the fast paths assume that the masks are nil.
- if o.DstMask != nil || o.SrcMask != nil || !sr.In(src.Bounds()) {
- switch op {
- case Over:
- z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o)
- case Src:
- z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- } else if u, ok := src.(*image.Uniform); ok {
- transform_Uniform(dst, dr, adr, &d2s, u, sr, bias, op)
- } else {
- switch op {
- case Over:
- switch dst := dst.(type) {
- case *image.RGBA:
- switch src := src.(type) {
- case *image.NRGBA:
- z.transform_RGBA_NRGBA_Over(dst, dr, adr, &d2s, src, sr, bias, &o)
- case *image.RGBA:
- z.transform_RGBA_RGBA_Over(dst, dr, adr, &d2s, src, sr, bias, &o)
- default:
- z.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- default:
- switch src := src.(type) {
- default:
- z.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- }
- case Src:
- switch dst := dst.(type) {
- case *image.RGBA:
- switch src := src.(type) {
- case *image.Gray:
- z.transform_RGBA_Gray_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case *image.NRGBA:
- z.transform_RGBA_NRGBA_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case *image.RGBA:
- z.transform_RGBA_RGBA_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case *image.YCbCr:
- switch src.SubsampleRatio {
- default:
- z.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case image.YCbCrSubsampleRatio444:
- z.transform_RGBA_YCbCr444_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case image.YCbCrSubsampleRatio422:
- z.transform_RGBA_YCbCr422_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case image.YCbCrSubsampleRatio420:
- z.transform_RGBA_YCbCr420_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- case image.YCbCrSubsampleRatio440:
- z.transform_RGBA_YCbCr440_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- default:
- z.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- default:
- switch src := src.(type) {
- default:
- z.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, &o)
- }
- }
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.Gray, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
- s00ru := uint32(src.Pix[s00i]) * 0x101
- s00r := float64(s00ru)
- s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
- s10ru := uint32(src.Pix[s10i]) * 0x101
- s10r := float64(s10ru)
- s10r = xFrac1*s00r + xFrac0*s10r
- s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
- s01ru := uint32(src.Pix[s01i]) * 0x101
- s01r := float64(s01ru)
- s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
- s11ru := uint32(src.Pix[s11i]) * 0x101
- s11r := float64(s11ru)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11r = yFrac1*s10r + yFrac0*s11r
- pr := uint32(s11r)
- out := uint8(pr >> 8)
- dst.Pix[d+0] = out
- dst.Pix[d+1] = out
- dst.Pix[d+2] = out
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4
- s00au := uint32(src.Pix[s00i+3]) * 0x101
- s00ru := uint32(src.Pix[s00i+0]) * s00au / 0xff
- s00gu := uint32(src.Pix[s00i+1]) * s00au / 0xff
- s00bu := uint32(src.Pix[s00i+2]) * s00au / 0xff
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4
- s10au := uint32(src.Pix[s10i+3]) * 0x101
- s10ru := uint32(src.Pix[s10i+0]) * s10au / 0xff
- s10gu := uint32(src.Pix[s10i+1]) * s10au / 0xff
- s10bu := uint32(src.Pix[s10i+2]) * s10au / 0xff
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4
- s01au := uint32(src.Pix[s01i+3]) * 0x101
- s01ru := uint32(src.Pix[s01i+0]) * s01au / 0xff
- s01gu := uint32(src.Pix[s01i+1]) * s01au / 0xff
- s01bu := uint32(src.Pix[s01i+2]) * s01au / 0xff
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4
- s11au := uint32(src.Pix[s11i+3]) * 0x101
- s11ru := uint32(src.Pix[s11i+0]) * s11au / 0xff
- s11gu := uint32(src.Pix[s11i+1]) * s11au / 0xff
- s11bu := uint32(src.Pix[s11i+2]) * s11au / 0xff
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.NRGBA, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4
- s00au := uint32(src.Pix[s00i+3]) * 0x101
- s00ru := uint32(src.Pix[s00i+0]) * s00au / 0xff
- s00gu := uint32(src.Pix[s00i+1]) * s00au / 0xff
- s00bu := uint32(src.Pix[s00i+2]) * s00au / 0xff
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4
- s10au := uint32(src.Pix[s10i+3]) * 0x101
- s10ru := uint32(src.Pix[s10i+0]) * s10au / 0xff
- s10gu := uint32(src.Pix[s10i+1]) * s10au / 0xff
- s10bu := uint32(src.Pix[s10i+2]) * s10au / 0xff
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4
- s01au := uint32(src.Pix[s01i+3]) * 0x101
- s01ru := uint32(src.Pix[s01i+0]) * s01au / 0xff
- s01gu := uint32(src.Pix[s01i+1]) * s01au / 0xff
- s01bu := uint32(src.Pix[s01i+2]) * s01au / 0xff
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4
- s11au := uint32(src.Pix[s11i+3]) * 0x101
- s11ru := uint32(src.Pix[s11i+0]) * s11au / 0xff
- s11gu := uint32(src.Pix[s11i+1]) * s11au / 0xff
- s11bu := uint32(src.Pix[s11i+2]) * s11au / 0xff
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4
- s00ru := uint32(src.Pix[s00i+0]) * 0x101
- s00gu := uint32(src.Pix[s00i+1]) * 0x101
- s00bu := uint32(src.Pix[s00i+2]) * 0x101
- s00au := uint32(src.Pix[s00i+3]) * 0x101
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4
- s10ru := uint32(src.Pix[s10i+0]) * 0x101
- s10gu := uint32(src.Pix[s10i+1]) * 0x101
- s10bu := uint32(src.Pix[s10i+2]) * 0x101
- s10au := uint32(src.Pix[s10i+3]) * 0x101
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4
- s01ru := uint32(src.Pix[s01i+0]) * 0x101
- s01gu := uint32(src.Pix[s01i+1]) * 0x101
- s01bu := uint32(src.Pix[s01i+2]) * 0x101
- s01au := uint32(src.Pix[s01i+3]) * 0x101
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4
- s11ru := uint32(src.Pix[s11i+0]) * 0x101
- s11gu := uint32(src.Pix[s11i+1]) * 0x101
- s11bu := uint32(src.Pix[s11i+2]) * 0x101
- s11au := uint32(src.Pix[s11i+3]) * 0x101
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.RGBA, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4
- s00ru := uint32(src.Pix[s00i+0]) * 0x101
- s00gu := uint32(src.Pix[s00i+1]) * 0x101
- s00bu := uint32(src.Pix[s00i+2]) * 0x101
- s00au := uint32(src.Pix[s00i+3]) * 0x101
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4
- s10ru := uint32(src.Pix[s10i+0]) * 0x101
- s10gu := uint32(src.Pix[s10i+1]) * 0x101
- s10bu := uint32(src.Pix[s10i+2]) * 0x101
- s10au := uint32(src.Pix[s10i+3]) * 0x101
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx0)-src.Rect.Min.X)*4
- s01ru := uint32(src.Pix[s01i+0]) * 0x101
- s01gu := uint32(src.Pix[s01i+1]) * 0x101
- s01bu := uint32(src.Pix[s01i+2]) * 0x101
- s01au := uint32(src.Pix[s01i+3]) * 0x101
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(sx1)-src.Rect.Min.X)*4
- s11ru := uint32(src.Pix[s11i+0]) * 0x101
- s11gu := uint32(src.Pix[s11i+1]) * 0x101
- s11bu := uint32(src.Pix[s11i+2]) * 0x101
- s11au := uint32(src.Pix[s11i+3]) * 0x101
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
- s00j := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s00yy1 := int(src.Y[s00i]) * 0x10101
- s00cb1 := int(src.Cb[s00j]) - 128
- s00cr1 := int(src.Cr[s00j]) - 128
- s00ru := (s00yy1 + 91881*s00cr1) >> 8
- s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8
- s00bu := (s00yy1 + 116130*s00cb1) >> 8
- if s00ru < 0 {
- s00ru = 0
- } else if s00ru > 0xffff {
- s00ru = 0xffff
- }
- if s00gu < 0 {
- s00gu = 0
- } else if s00gu > 0xffff {
- s00gu = 0xffff
- }
- if s00bu < 0 {
- s00bu = 0
- } else if s00bu > 0xffff {
- s00bu = 0xffff
- }
-
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
- s10j := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s10yy1 := int(src.Y[s10i]) * 0x10101
- s10cb1 := int(src.Cb[s10j]) - 128
- s10cr1 := int(src.Cr[s10j]) - 128
- s10ru := (s10yy1 + 91881*s10cr1) >> 8
- s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8
- s10bu := (s10yy1 + 116130*s10cb1) >> 8
- if s10ru < 0 {
- s10ru = 0
- } else if s10ru > 0xffff {
- s10ru = 0xffff
- }
- if s10gu < 0 {
- s10gu = 0
- } else if s10gu > 0xffff {
- s10gu = 0xffff
- }
- if s10bu < 0 {
- s10bu = 0
- } else if s10bu > 0xffff {
- s10bu = 0xffff
- }
-
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
- s01j := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s01yy1 := int(src.Y[s01i]) * 0x10101
- s01cb1 := int(src.Cb[s01j]) - 128
- s01cr1 := int(src.Cr[s01j]) - 128
- s01ru := (s01yy1 + 91881*s01cr1) >> 8
- s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8
- s01bu := (s01yy1 + 116130*s01cb1) >> 8
- if s01ru < 0 {
- s01ru = 0
- } else if s01ru > 0xffff {
- s01ru = 0xffff
- }
- if s01gu < 0 {
- s01gu = 0
- } else if s01gu > 0xffff {
- s01gu = 0xffff
- }
- if s01bu < 0 {
- s01bu = 0
- } else if s01bu > 0xffff {
- s01bu = 0xffff
- }
-
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
- s11j := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s11yy1 := int(src.Y[s11i]) * 0x10101
- s11cb1 := int(src.Cb[s11j]) - 128
- s11cr1 := int(src.Cr[s11j]) - 128
- s11ru := (s11yy1 + 91881*s11cr1) >> 8
- s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8
- s11bu := (s11yy1 + 116130*s11cb1) >> 8
- if s11ru < 0 {
- s11ru = 0
- } else if s11ru > 0xffff {
- s11ru = 0xffff
- }
- if s11gu < 0 {
- s11gu = 0
- } else if s11gu > 0xffff {
- s11gu = 0xffff
- }
- if s11bu < 0 {
- s11bu = 0
- } else if s11bu > 0xffff {
- s11bu = 0xffff
- }
-
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_YCbCr422_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
- s00j := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(sx0))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s00yy1 := int(src.Y[s00i]) * 0x10101
- s00cb1 := int(src.Cb[s00j]) - 128
- s00cr1 := int(src.Cr[s00j]) - 128
- s00ru := (s00yy1 + 91881*s00cr1) >> 8
- s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8
- s00bu := (s00yy1 + 116130*s00cb1) >> 8
- if s00ru < 0 {
- s00ru = 0
- } else if s00ru > 0xffff {
- s00ru = 0xffff
- }
- if s00gu < 0 {
- s00gu = 0
- } else if s00gu > 0xffff {
- s00gu = 0xffff
- }
- if s00bu < 0 {
- s00bu = 0
- } else if s00bu > 0xffff {
- s00bu = 0xffff
- }
-
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
- s10j := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(sx1))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s10yy1 := int(src.Y[s10i]) * 0x10101
- s10cb1 := int(src.Cb[s10j]) - 128
- s10cr1 := int(src.Cr[s10j]) - 128
- s10ru := (s10yy1 + 91881*s10cr1) >> 8
- s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8
- s10bu := (s10yy1 + 116130*s10cb1) >> 8
- if s10ru < 0 {
- s10ru = 0
- } else if s10ru > 0xffff {
- s10ru = 0xffff
- }
- if s10gu < 0 {
- s10gu = 0
- } else if s10gu > 0xffff {
- s10gu = 0xffff
- }
- if s10bu < 0 {
- s10bu = 0
- } else if s10bu > 0xffff {
- s10bu = 0xffff
- }
-
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
- s01j := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(sx0))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s01yy1 := int(src.Y[s01i]) * 0x10101
- s01cb1 := int(src.Cb[s01j]) - 128
- s01cr1 := int(src.Cr[s01j]) - 128
- s01ru := (s01yy1 + 91881*s01cr1) >> 8
- s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8
- s01bu := (s01yy1 + 116130*s01cb1) >> 8
- if s01ru < 0 {
- s01ru = 0
- } else if s01ru > 0xffff {
- s01ru = 0xffff
- }
- if s01gu < 0 {
- s01gu = 0
- } else if s01gu > 0xffff {
- s01gu = 0xffff
- }
- if s01bu < 0 {
- s01bu = 0
- } else if s01bu > 0xffff {
- s01bu = 0xffff
- }
-
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
- s11j := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(sx1))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s11yy1 := int(src.Y[s11i]) * 0x10101
- s11cb1 := int(src.Cb[s11j]) - 128
- s11cr1 := int(src.Cr[s11j]) - 128
- s11ru := (s11yy1 + 91881*s11cr1) >> 8
- s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8
- s11bu := (s11yy1 + 116130*s11cb1) >> 8
- if s11ru < 0 {
- s11ru = 0
- } else if s11ru > 0xffff {
- s11ru = 0xffff
- }
- if s11gu < 0 {
- s11gu = 0
- } else if s11gu > 0xffff {
- s11gu = 0xffff
- }
- if s11bu < 0 {
- s11bu = 0
- } else if s11bu > 0xffff {
- s11bu = 0xffff
- }
-
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_YCbCr420_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
- s00j := ((sr.Min.Y+int(sy0))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(sx0))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s00yy1 := int(src.Y[s00i]) * 0x10101
- s00cb1 := int(src.Cb[s00j]) - 128
- s00cr1 := int(src.Cr[s00j]) - 128
- s00ru := (s00yy1 + 91881*s00cr1) >> 8
- s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8
- s00bu := (s00yy1 + 116130*s00cb1) >> 8
- if s00ru < 0 {
- s00ru = 0
- } else if s00ru > 0xffff {
- s00ru = 0xffff
- }
- if s00gu < 0 {
- s00gu = 0
- } else if s00gu > 0xffff {
- s00gu = 0xffff
- }
- if s00bu < 0 {
- s00bu = 0
- } else if s00bu > 0xffff {
- s00bu = 0xffff
- }
-
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
- s10j := ((sr.Min.Y+int(sy0))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(sx1))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s10yy1 := int(src.Y[s10i]) * 0x10101
- s10cb1 := int(src.Cb[s10j]) - 128
- s10cr1 := int(src.Cr[s10j]) - 128
- s10ru := (s10yy1 + 91881*s10cr1) >> 8
- s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8
- s10bu := (s10yy1 + 116130*s10cb1) >> 8
- if s10ru < 0 {
- s10ru = 0
- } else if s10ru > 0xffff {
- s10ru = 0xffff
- }
- if s10gu < 0 {
- s10gu = 0
- } else if s10gu > 0xffff {
- s10gu = 0xffff
- }
- if s10bu < 0 {
- s10bu = 0
- } else if s10bu > 0xffff {
- s10bu = 0xffff
- }
-
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
- s01j := ((sr.Min.Y+int(sy1))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(sx0))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s01yy1 := int(src.Y[s01i]) * 0x10101
- s01cb1 := int(src.Cb[s01j]) - 128
- s01cr1 := int(src.Cr[s01j]) - 128
- s01ru := (s01yy1 + 91881*s01cr1) >> 8
- s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8
- s01bu := (s01yy1 + 116130*s01cb1) >> 8
- if s01ru < 0 {
- s01ru = 0
- } else if s01ru > 0xffff {
- s01ru = 0xffff
- }
- if s01gu < 0 {
- s01gu = 0
- } else if s01gu > 0xffff {
- s01gu = 0xffff
- }
- if s01bu < 0 {
- s01bu = 0
- } else if s01bu > 0xffff {
- s01bu = 0xffff
- }
-
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
- s11j := ((sr.Min.Y+int(sy1))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(sx1))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s11yy1 := int(src.Y[s11i]) * 0x10101
- s11cb1 := int(src.Cb[s11j]) - 128
- s11cr1 := int(src.Cr[s11j]) - 128
- s11ru := (s11yy1 + 91881*s11cr1) >> 8
- s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8
- s11bu := (s11yy1 + 116130*s11cb1) >> 8
- if s11ru < 0 {
- s11ru = 0
- } else if s11ru > 0xffff {
- s11ru = 0xffff
- }
- if s11gu < 0 {
- s11gu = 0
- } else if s11gu > 0xffff {
- s11gu = 0xffff
- }
- if s11bu < 0 {
- s11bu = 0
- } else if s11bu > 0xffff {
- s11bu = 0xffff
- }
-
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_YCbCr440_Src(dst *image.RGBA, dr, adr image.Rectangle, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
- s00j := ((sr.Min.Y+int(sy0))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s00yy1 := int(src.Y[s00i]) * 0x10101
- s00cb1 := int(src.Cb[s00j]) - 128
- s00cr1 := int(src.Cr[s00j]) - 128
- s00ru := (s00yy1 + 91881*s00cr1) >> 8
- s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8
- s00bu := (s00yy1 + 116130*s00cb1) >> 8
- if s00ru < 0 {
- s00ru = 0
- } else if s00ru > 0xffff {
- s00ru = 0xffff
- }
- if s00gu < 0 {
- s00gu = 0
- } else if s00gu > 0xffff {
- s00gu = 0xffff
- }
- if s00bu < 0 {
- s00bu = 0
- } else if s00bu > 0xffff {
- s00bu = 0xffff
- }
-
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s10i := (sr.Min.Y+int(sy0)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
- s10j := ((sr.Min.Y+int(sy0))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s10yy1 := int(src.Y[s10i]) * 0x10101
- s10cb1 := int(src.Cb[s10j]) - 128
- s10cr1 := int(src.Cr[s10j]) - 128
- s10ru := (s10yy1 + 91881*s10cr1) >> 8
- s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8
- s10bu := (s10yy1 + 116130*s10cb1) >> 8
- if s10ru < 0 {
- s10ru = 0
- } else if s10ru > 0xffff {
- s10ru = 0xffff
- }
- if s10gu < 0 {
- s10gu = 0
- } else if s10gu > 0xffff {
- s10gu = 0xffff
- }
- if s10bu < 0 {
- s10bu = 0
- } else if s10bu > 0xffff {
- s10bu = 0xffff
- }
-
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s01i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
- s01j := ((sr.Min.Y+int(sy1))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(sx0) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s01yy1 := int(src.Y[s01i]) * 0x10101
- s01cb1 := int(src.Cb[s01j]) - 128
- s01cr1 := int(src.Cr[s01j]) - 128
- s01ru := (s01yy1 + 91881*s01cr1) >> 8
- s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8
- s01bu := (s01yy1 + 116130*s01cb1) >> 8
- if s01ru < 0 {
- s01ru = 0
- } else if s01ru > 0xffff {
- s01ru = 0xffff
- }
- if s01gu < 0 {
- s01gu = 0
- } else if s01gu > 0xffff {
- s01gu = 0xffff
- }
- if s01bu < 0 {
- s01bu = 0
- } else if s01bu > 0xffff {
- s01bu = 0xffff
- }
-
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s11i := (sr.Min.Y+int(sy1)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
- s11j := ((sr.Min.Y+int(sy1))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(sx1) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s11yy1 := int(src.Y[s11i]) * 0x10101
- s11cb1 := int(src.Cb[s11j]) - 128
- s11cr1 := int(src.Cr[s11j]) - 128
- s11ru := (s11yy1 + 91881*s11cr1) >> 8
- s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8
- s11bu := (s11yy1 + 116130*s11cb1) >> 8
- if s11ru < 0 {
- s11ru = 0
- } else if s11ru > 0xffff {
- s11ru = 0xffff
- }
- if s11gu < 0 {
- s11gu = 0
- } else if s11gu > 0xffff {
- s11gu = 0xffff
- }
- if s11bu < 0 {
- s11bu = 0
- } else if s11bu > 0xffff {
- s11bu = 0xffff
- }
-
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA()
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA()
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA()
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA()
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (ablInterpolator) scale_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA()
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA()
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA()
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA()
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (ablInterpolator) scale_Image_Image_Over(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx0), smp.Y+sr.Min.Y+int(sy0)).RGBA()
- s00ru = s00ru * ma / 0xffff
- s00gu = s00gu * ma / 0xffff
- s00bu = s00bu * ma / 0xffff
- s00au = s00au * ma / 0xffff
- }
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx1), smp.Y+sr.Min.Y+int(sy0)).RGBA()
- s10ru = s10ru * ma / 0xffff
- s10gu = s10gu * ma / 0xffff
- s10bu = s10bu * ma / 0xffff
- s10au = s10au * ma / 0xffff
- }
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx0), smp.Y+sr.Min.Y+int(sy1)).RGBA()
- s01ru = s01ru * ma / 0xffff
- s01gu = s01gu * ma / 0xffff
- s01bu = s01bu * ma / 0xffff
- s01au = s01au * ma / 0xffff
- }
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx1), smp.Y+sr.Min.Y+int(sy1)).RGBA()
- s11ru = s11ru * ma / 0xffff
- s11gu = s11gu * ma / 0xffff
- s11bu = s11bu * ma / 0xffff
- s11au = s11au * ma / 0xffff
- }
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA()
- if dstMask != nil {
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- }
- pa1 := 0xffff - pa
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- }
- }
-}
-
-func (ablInterpolator) scale_Image_Image_Src(dst Image, dr, adr image.Rectangle, src image.Image, sr image.Rectangle, opts *Options) {
- sw := int32(sr.Dx())
- sh := int32(sr.Dy())
- yscale := float64(sh) / float64(dr.Dy())
- xscale := float64(sw) / float64(dr.Dx())
- swMinus1, shMinus1 := sw-1, sh-1
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- sy := (float64(dy)+0.5)*yscale - 0.5
- // If sy < 0, we will clamp sy0 to 0 anyway, so it doesn't matter if
- // we say int32(sy) instead of int32(math.Floor(sy)). Similarly for
- // sx, below.
- sy0 := int32(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy1 := sy0 + 1
- if sy < 0 {
- sy0, sy1 = 0, 0
- yFrac0, yFrac1 = 0, 1
- } else if sy1 > shMinus1 {
- sy0, sy1 = shMinus1, shMinus1
- yFrac0, yFrac1 = 1, 0
- }
-
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- sx := (float64(dx)+0.5)*xscale - 0.5
- sx0 := int32(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx1 := sx0 + 1
- if sx < 0 {
- sx0, sx1 = 0, 0
- xFrac0, xFrac1 = 0, 1
- } else if sx1 > swMinus1 {
- sx0, sx1 = swMinus1, swMinus1
- xFrac0, xFrac1 = 1, 0
- }
-
- s00ru, s00gu, s00bu, s00au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy0)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx0), smp.Y+sr.Min.Y+int(sy0)).RGBA()
- s00ru = s00ru * ma / 0xffff
- s00gu = s00gu * ma / 0xffff
- s00bu = s00bu * ma / 0xffff
- s00au = s00au * ma / 0xffff
- }
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10ru, s10gu, s10bu, s10au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy0)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx1), smp.Y+sr.Min.Y+int(sy0)).RGBA()
- s10ru = s10ru * ma / 0xffff
- s10gu = s10gu * ma / 0xffff
- s10bu = s10bu * ma / 0xffff
- s10au = s10au * ma / 0xffff
- }
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01ru, s01gu, s01bu, s01au := src.At(sr.Min.X+int(sx0), sr.Min.Y+int(sy1)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx0), smp.Y+sr.Min.Y+int(sy1)).RGBA()
- s01ru = s01ru * ma / 0xffff
- s01gu = s01gu * ma / 0xffff
- s01bu = s01bu * ma / 0xffff
- s01au = s01au * ma / 0xffff
- }
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11ru, s11gu, s11bu, s11au := src.At(sr.Min.X+int(sx1), sr.Min.Y+int(sy1)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(sx1), smp.Y+sr.Min.Y+int(sy1)).RGBA()
- s11ru = s11ru * ma / 0xffff
- s11gu = s11gu * ma / 0xffff
- s11bu = s11bu * ma / 0xffff
- s11au = s11au * ma / 0xffff
- }
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- if dstMask != nil {
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA()
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- pa1 := 0xffff - ma
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- } else {
- dstColorRGBA64.R = uint16(pr)
- dstColorRGBA64.G = uint16(pg)
- dstColorRGBA64.B = uint16(pb)
- dstColorRGBA64.A = uint16(pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- }
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00i := (sy0-src.Rect.Min.Y)*src.Stride + (sx0 - src.Rect.Min.X)
- s00ru := uint32(src.Pix[s00i]) * 0x101
- s00r := float64(s00ru)
- s10i := (sy0-src.Rect.Min.Y)*src.Stride + (sx1 - src.Rect.Min.X)
- s10ru := uint32(src.Pix[s10i]) * 0x101
- s10r := float64(s10ru)
- s10r = xFrac1*s00r + xFrac0*s10r
- s01i := (sy1-src.Rect.Min.Y)*src.Stride + (sx0 - src.Rect.Min.X)
- s01ru := uint32(src.Pix[s01i]) * 0x101
- s01r := float64(s01ru)
- s11i := (sy1-src.Rect.Min.Y)*src.Stride + (sx1 - src.Rect.Min.X)
- s11ru := uint32(src.Pix[s11i]) * 0x101
- s11r := float64(s11ru)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11r = yFrac1*s10r + yFrac0*s11r
- pr := uint32(s11r)
- out := uint8(pr >> 8)
- dst.Pix[d+0] = out
- dst.Pix[d+1] = out
- dst.Pix[d+2] = out
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00i := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- s00au := uint32(src.Pix[s00i+3]) * 0x101
- s00ru := uint32(src.Pix[s00i+0]) * s00au / 0xff
- s00gu := uint32(src.Pix[s00i+1]) * s00au / 0xff
- s00bu := uint32(src.Pix[s00i+2]) * s00au / 0xff
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10i := (sy0-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4
- s10au := uint32(src.Pix[s10i+3]) * 0x101
- s10ru := uint32(src.Pix[s10i+0]) * s10au / 0xff
- s10gu := uint32(src.Pix[s10i+1]) * s10au / 0xff
- s10bu := uint32(src.Pix[s10i+2]) * s10au / 0xff
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01i := (sy1-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- s01au := uint32(src.Pix[s01i+3]) * 0x101
- s01ru := uint32(src.Pix[s01i+0]) * s01au / 0xff
- s01gu := uint32(src.Pix[s01i+1]) * s01au / 0xff
- s01bu := uint32(src.Pix[s01i+2]) * s01au / 0xff
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11i := (sy1-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4
- s11au := uint32(src.Pix[s11i+3]) * 0x101
- s11ru := uint32(src.Pix[s11i+0]) * s11au / 0xff
- s11gu := uint32(src.Pix[s11i+1]) * s11au / 0xff
- s11bu := uint32(src.Pix[s11i+2]) * s11au / 0xff
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00i := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- s00au := uint32(src.Pix[s00i+3]) * 0x101
- s00ru := uint32(src.Pix[s00i+0]) * s00au / 0xff
- s00gu := uint32(src.Pix[s00i+1]) * s00au / 0xff
- s00bu := uint32(src.Pix[s00i+2]) * s00au / 0xff
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10i := (sy0-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4
- s10au := uint32(src.Pix[s10i+3]) * 0x101
- s10ru := uint32(src.Pix[s10i+0]) * s10au / 0xff
- s10gu := uint32(src.Pix[s10i+1]) * s10au / 0xff
- s10bu := uint32(src.Pix[s10i+2]) * s10au / 0xff
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01i := (sy1-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- s01au := uint32(src.Pix[s01i+3]) * 0x101
- s01ru := uint32(src.Pix[s01i+0]) * s01au / 0xff
- s01gu := uint32(src.Pix[s01i+1]) * s01au / 0xff
- s01bu := uint32(src.Pix[s01i+2]) * s01au / 0xff
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11i := (sy1-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4
- s11au := uint32(src.Pix[s11i+3]) * 0x101
- s11ru := uint32(src.Pix[s11i+0]) * s11au / 0xff
- s11gu := uint32(src.Pix[s11i+1]) * s11au / 0xff
- s11bu := uint32(src.Pix[s11i+2]) * s11au / 0xff
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00i := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- s00ru := uint32(src.Pix[s00i+0]) * 0x101
- s00gu := uint32(src.Pix[s00i+1]) * 0x101
- s00bu := uint32(src.Pix[s00i+2]) * 0x101
- s00au := uint32(src.Pix[s00i+3]) * 0x101
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10i := (sy0-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4
- s10ru := uint32(src.Pix[s10i+0]) * 0x101
- s10gu := uint32(src.Pix[s10i+1]) * 0x101
- s10bu := uint32(src.Pix[s10i+2]) * 0x101
- s10au := uint32(src.Pix[s10i+3]) * 0x101
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01i := (sy1-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- s01ru := uint32(src.Pix[s01i+0]) * 0x101
- s01gu := uint32(src.Pix[s01i+1]) * 0x101
- s01bu := uint32(src.Pix[s01i+2]) * 0x101
- s01au := uint32(src.Pix[s01i+3]) * 0x101
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11i := (sy1-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4
- s11ru := uint32(src.Pix[s11i+0]) * 0x101
- s11gu := uint32(src.Pix[s11i+1]) * 0x101
- s11bu := uint32(src.Pix[s11i+2]) * 0x101
- s11au := uint32(src.Pix[s11i+3]) * 0x101
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00i := (sy0-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- s00ru := uint32(src.Pix[s00i+0]) * 0x101
- s00gu := uint32(src.Pix[s00i+1]) * 0x101
- s00bu := uint32(src.Pix[s00i+2]) * 0x101
- s00au := uint32(src.Pix[s00i+3]) * 0x101
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10i := (sy0-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4
- s10ru := uint32(src.Pix[s10i+0]) * 0x101
- s10gu := uint32(src.Pix[s10i+1]) * 0x101
- s10bu := uint32(src.Pix[s10i+2]) * 0x101
- s10au := uint32(src.Pix[s10i+3]) * 0x101
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01i := (sy1-src.Rect.Min.Y)*src.Stride + (sx0-src.Rect.Min.X)*4
- s01ru := uint32(src.Pix[s01i+0]) * 0x101
- s01gu := uint32(src.Pix[s01i+1]) * 0x101
- s01bu := uint32(src.Pix[s01i+2]) * 0x101
- s01au := uint32(src.Pix[s01i+3]) * 0x101
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11i := (sy1-src.Rect.Min.Y)*src.Stride + (sx1-src.Rect.Min.X)*4
- s11ru := uint32(src.Pix[s11i+0]) * 0x101
- s11gu := uint32(src.Pix[s11i+1]) * 0x101
- s11bu := uint32(src.Pix[s11i+2]) * 0x101
- s11au := uint32(src.Pix[s11i+3]) * 0x101
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00i := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- s00j := (sy0-src.Rect.Min.Y)*src.CStride + (sx0 - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s00yy1 := int(src.Y[s00i]) * 0x10101
- s00cb1 := int(src.Cb[s00j]) - 128
- s00cr1 := int(src.Cr[s00j]) - 128
- s00ru := (s00yy1 + 91881*s00cr1) >> 8
- s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8
- s00bu := (s00yy1 + 116130*s00cb1) >> 8
- if s00ru < 0 {
- s00ru = 0
- } else if s00ru > 0xffff {
- s00ru = 0xffff
- }
- if s00gu < 0 {
- s00gu = 0
- } else if s00gu > 0xffff {
- s00gu = 0xffff
- }
- if s00bu < 0 {
- s00bu = 0
- } else if s00bu > 0xffff {
- s00bu = 0xffff
- }
-
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s10i := (sy0-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X)
- s10j := (sy0-src.Rect.Min.Y)*src.CStride + (sx1 - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s10yy1 := int(src.Y[s10i]) * 0x10101
- s10cb1 := int(src.Cb[s10j]) - 128
- s10cr1 := int(src.Cr[s10j]) - 128
- s10ru := (s10yy1 + 91881*s10cr1) >> 8
- s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8
- s10bu := (s10yy1 + 116130*s10cb1) >> 8
- if s10ru < 0 {
- s10ru = 0
- } else if s10ru > 0xffff {
- s10ru = 0xffff
- }
- if s10gu < 0 {
- s10gu = 0
- } else if s10gu > 0xffff {
- s10gu = 0xffff
- }
- if s10bu < 0 {
- s10bu = 0
- } else if s10bu > 0xffff {
- s10bu = 0xffff
- }
-
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s01i := (sy1-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- s01j := (sy1-src.Rect.Min.Y)*src.CStride + (sx0 - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s01yy1 := int(src.Y[s01i]) * 0x10101
- s01cb1 := int(src.Cb[s01j]) - 128
- s01cr1 := int(src.Cr[s01j]) - 128
- s01ru := (s01yy1 + 91881*s01cr1) >> 8
- s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8
- s01bu := (s01yy1 + 116130*s01cb1) >> 8
- if s01ru < 0 {
- s01ru = 0
- } else if s01ru > 0xffff {
- s01ru = 0xffff
- }
- if s01gu < 0 {
- s01gu = 0
- } else if s01gu > 0xffff {
- s01gu = 0xffff
- }
- if s01bu < 0 {
- s01bu = 0
- } else if s01bu > 0xffff {
- s01bu = 0xffff
- }
-
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s11i := (sy1-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X)
- s11j := (sy1-src.Rect.Min.Y)*src.CStride + (sx1 - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s11yy1 := int(src.Y[s11i]) * 0x10101
- s11cb1 := int(src.Cb[s11j]) - 128
- s11cr1 := int(src.Cr[s11j]) - 128
- s11ru := (s11yy1 + 91881*s11cr1) >> 8
- s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8
- s11bu := (s11yy1 + 116130*s11cb1) >> 8
- if s11ru < 0 {
- s11ru = 0
- } else if s11ru > 0xffff {
- s11ru = 0xffff
- }
- if s11gu < 0 {
- s11gu = 0
- } else if s11gu > 0xffff {
- s11gu = 0xffff
- }
- if s11bu < 0 {
- s11bu = 0
- } else if s11bu > 0xffff {
- s11bu = 0xffff
- }
-
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_YCbCr422_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00i := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- s00j := (sy0-src.Rect.Min.Y)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s00yy1 := int(src.Y[s00i]) * 0x10101
- s00cb1 := int(src.Cb[s00j]) - 128
- s00cr1 := int(src.Cr[s00j]) - 128
- s00ru := (s00yy1 + 91881*s00cr1) >> 8
- s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8
- s00bu := (s00yy1 + 116130*s00cb1) >> 8
- if s00ru < 0 {
- s00ru = 0
- } else if s00ru > 0xffff {
- s00ru = 0xffff
- }
- if s00gu < 0 {
- s00gu = 0
- } else if s00gu > 0xffff {
- s00gu = 0xffff
- }
- if s00bu < 0 {
- s00bu = 0
- } else if s00bu > 0xffff {
- s00bu = 0xffff
- }
-
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s10i := (sy0-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X)
- s10j := (sy0-src.Rect.Min.Y)*src.CStride + ((sx1)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s10yy1 := int(src.Y[s10i]) * 0x10101
- s10cb1 := int(src.Cb[s10j]) - 128
- s10cr1 := int(src.Cr[s10j]) - 128
- s10ru := (s10yy1 + 91881*s10cr1) >> 8
- s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8
- s10bu := (s10yy1 + 116130*s10cb1) >> 8
- if s10ru < 0 {
- s10ru = 0
- } else if s10ru > 0xffff {
- s10ru = 0xffff
- }
- if s10gu < 0 {
- s10gu = 0
- } else if s10gu > 0xffff {
- s10gu = 0xffff
- }
- if s10bu < 0 {
- s10bu = 0
- } else if s10bu > 0xffff {
- s10bu = 0xffff
- }
-
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s01i := (sy1-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- s01j := (sy1-src.Rect.Min.Y)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s01yy1 := int(src.Y[s01i]) * 0x10101
- s01cb1 := int(src.Cb[s01j]) - 128
- s01cr1 := int(src.Cr[s01j]) - 128
- s01ru := (s01yy1 + 91881*s01cr1) >> 8
- s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8
- s01bu := (s01yy1 + 116130*s01cb1) >> 8
- if s01ru < 0 {
- s01ru = 0
- } else if s01ru > 0xffff {
- s01ru = 0xffff
- }
- if s01gu < 0 {
- s01gu = 0
- } else if s01gu > 0xffff {
- s01gu = 0xffff
- }
- if s01bu < 0 {
- s01bu = 0
- } else if s01bu > 0xffff {
- s01bu = 0xffff
- }
-
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s11i := (sy1-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X)
- s11j := (sy1-src.Rect.Min.Y)*src.CStride + ((sx1)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s11yy1 := int(src.Y[s11i]) * 0x10101
- s11cb1 := int(src.Cb[s11j]) - 128
- s11cr1 := int(src.Cr[s11j]) - 128
- s11ru := (s11yy1 + 91881*s11cr1) >> 8
- s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8
- s11bu := (s11yy1 + 116130*s11cb1) >> 8
- if s11ru < 0 {
- s11ru = 0
- } else if s11ru > 0xffff {
- s11ru = 0xffff
- }
- if s11gu < 0 {
- s11gu = 0
- } else if s11gu > 0xffff {
- s11gu = 0xffff
- }
- if s11bu < 0 {
- s11bu = 0
- } else if s11bu > 0xffff {
- s11bu = 0xffff
- }
-
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_YCbCr420_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00i := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- s00j := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s00yy1 := int(src.Y[s00i]) * 0x10101
- s00cb1 := int(src.Cb[s00j]) - 128
- s00cr1 := int(src.Cr[s00j]) - 128
- s00ru := (s00yy1 + 91881*s00cr1) >> 8
- s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8
- s00bu := (s00yy1 + 116130*s00cb1) >> 8
- if s00ru < 0 {
- s00ru = 0
- } else if s00ru > 0xffff {
- s00ru = 0xffff
- }
- if s00gu < 0 {
- s00gu = 0
- } else if s00gu > 0xffff {
- s00gu = 0xffff
- }
- if s00bu < 0 {
- s00bu = 0
- } else if s00bu > 0xffff {
- s00bu = 0xffff
- }
-
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s10i := (sy0-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X)
- s10j := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + ((sx1)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s10yy1 := int(src.Y[s10i]) * 0x10101
- s10cb1 := int(src.Cb[s10j]) - 128
- s10cr1 := int(src.Cr[s10j]) - 128
- s10ru := (s10yy1 + 91881*s10cr1) >> 8
- s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8
- s10bu := (s10yy1 + 116130*s10cb1) >> 8
- if s10ru < 0 {
- s10ru = 0
- } else if s10ru > 0xffff {
- s10ru = 0xffff
- }
- if s10gu < 0 {
- s10gu = 0
- } else if s10gu > 0xffff {
- s10gu = 0xffff
- }
- if s10bu < 0 {
- s10bu = 0
- } else if s10bu > 0xffff {
- s10bu = 0xffff
- }
-
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s01i := (sy1-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- s01j := ((sy1)/2-src.Rect.Min.Y/2)*src.CStride + ((sx0)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s01yy1 := int(src.Y[s01i]) * 0x10101
- s01cb1 := int(src.Cb[s01j]) - 128
- s01cr1 := int(src.Cr[s01j]) - 128
- s01ru := (s01yy1 + 91881*s01cr1) >> 8
- s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8
- s01bu := (s01yy1 + 116130*s01cb1) >> 8
- if s01ru < 0 {
- s01ru = 0
- } else if s01ru > 0xffff {
- s01ru = 0xffff
- }
- if s01gu < 0 {
- s01gu = 0
- } else if s01gu > 0xffff {
- s01gu = 0xffff
- }
- if s01bu < 0 {
- s01bu = 0
- } else if s01bu > 0xffff {
- s01bu = 0xffff
- }
-
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s11i := (sy1-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X)
- s11j := ((sy1)/2-src.Rect.Min.Y/2)*src.CStride + ((sx1)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s11yy1 := int(src.Y[s11i]) * 0x10101
- s11cb1 := int(src.Cb[s11j]) - 128
- s11cr1 := int(src.Cr[s11j]) - 128
- s11ru := (s11yy1 + 91881*s11cr1) >> 8
- s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8
- s11bu := (s11yy1 + 116130*s11cb1) >> 8
- if s11ru < 0 {
- s11ru = 0
- } else if s11ru > 0xffff {
- s11ru = 0xffff
- }
- if s11gu < 0 {
- s11gu = 0
- } else if s11gu > 0xffff {
- s11gu = 0xffff
- }
- if s11bu < 0 {
- s11bu = 0
- } else if s11bu > 0xffff {
- s11bu = 0xffff
- }
-
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_YCbCr440_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00i := (sy0-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- s00j := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + (sx0 - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s00yy1 := int(src.Y[s00i]) * 0x10101
- s00cb1 := int(src.Cb[s00j]) - 128
- s00cr1 := int(src.Cr[s00j]) - 128
- s00ru := (s00yy1 + 91881*s00cr1) >> 8
- s00gu := (s00yy1 - 22554*s00cb1 - 46802*s00cr1) >> 8
- s00bu := (s00yy1 + 116130*s00cb1) >> 8
- if s00ru < 0 {
- s00ru = 0
- } else if s00ru > 0xffff {
- s00ru = 0xffff
- }
- if s00gu < 0 {
- s00gu = 0
- } else if s00gu > 0xffff {
- s00gu = 0xffff
- }
- if s00bu < 0 {
- s00bu = 0
- } else if s00bu > 0xffff {
- s00bu = 0xffff
- }
-
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s10i := (sy0-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X)
- s10j := ((sy0)/2-src.Rect.Min.Y/2)*src.CStride + (sx1 - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s10yy1 := int(src.Y[s10i]) * 0x10101
- s10cb1 := int(src.Cb[s10j]) - 128
- s10cr1 := int(src.Cr[s10j]) - 128
- s10ru := (s10yy1 + 91881*s10cr1) >> 8
- s10gu := (s10yy1 - 22554*s10cb1 - 46802*s10cr1) >> 8
- s10bu := (s10yy1 + 116130*s10cb1) >> 8
- if s10ru < 0 {
- s10ru = 0
- } else if s10ru > 0xffff {
- s10ru = 0xffff
- }
- if s10gu < 0 {
- s10gu = 0
- } else if s10gu > 0xffff {
- s10gu = 0xffff
- }
- if s10bu < 0 {
- s10bu = 0
- } else if s10bu > 0xffff {
- s10bu = 0xffff
- }
-
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s01i := (sy1-src.Rect.Min.Y)*src.YStride + (sx0 - src.Rect.Min.X)
- s01j := ((sy1)/2-src.Rect.Min.Y/2)*src.CStride + (sx0 - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s01yy1 := int(src.Y[s01i]) * 0x10101
- s01cb1 := int(src.Cb[s01j]) - 128
- s01cr1 := int(src.Cr[s01j]) - 128
- s01ru := (s01yy1 + 91881*s01cr1) >> 8
- s01gu := (s01yy1 - 22554*s01cb1 - 46802*s01cr1) >> 8
- s01bu := (s01yy1 + 116130*s01cb1) >> 8
- if s01ru < 0 {
- s01ru = 0
- } else if s01ru > 0xffff {
- s01ru = 0xffff
- }
- if s01gu < 0 {
- s01gu = 0
- } else if s01gu > 0xffff {
- s01gu = 0xffff
- }
- if s01bu < 0 {
- s01bu = 0
- } else if s01bu > 0xffff {
- s01bu = 0xffff
- }
-
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s11i := (sy1-src.Rect.Min.Y)*src.YStride + (sx1 - src.Rect.Min.X)
- s11j := ((sy1)/2-src.Rect.Min.Y/2)*src.CStride + (sx1 - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- s11yy1 := int(src.Y[s11i]) * 0x10101
- s11cb1 := int(src.Cb[s11j]) - 128
- s11cr1 := int(src.Cr[s11j]) - 128
- s11ru := (s11yy1 + 91881*s11cr1) >> 8
- s11gu := (s11yy1 - 22554*s11cb1 - 46802*s11cr1) >> 8
- s11bu := (s11yy1 + 116130*s11cb1) >> 8
- if s11ru < 0 {
- s11ru = 0
- } else if s11ru > 0xffff {
- s11ru = 0xffff
- }
- if s11gu < 0 {
- s11gu = 0
- } else if s11gu > 0xffff {
- s11gu = 0xffff
- }
- if s11bu < 0 {
- s11bu = 0
- } else if s11bu > 0xffff {
- s11bu = 0xffff
- }
-
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA()
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA()
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA()
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA()
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- pa1 := (0xffff - pa) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa) >> 8)
- }
- }
-}
-
-func (ablInterpolator) transform_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) {
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA()
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA()
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA()
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA()
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- dst.Pix[d+0] = uint8(pr >> 8)
- dst.Pix[d+1] = uint8(pg >> 8)
- dst.Pix[d+2] = uint8(pb >> 8)
- dst.Pix[d+3] = uint8(pa >> 8)
- }
- }
-}
-
-func (ablInterpolator) transform_Image_Image_Over(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) {
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy0).RGBA()
- s00ru = s00ru * ma / 0xffff
- s00gu = s00gu * ma / 0xffff
- s00bu = s00bu * ma / 0xffff
- s00au = s00au * ma / 0xffff
- }
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sx1, smp.Y+sy0).RGBA()
- s10ru = s10ru * ma / 0xffff
- s10gu = s10gu * ma / 0xffff
- s10bu = s10bu * ma / 0xffff
- s10au = s10au * ma / 0xffff
- }
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy1).RGBA()
- s01ru = s01ru * ma / 0xffff
- s01gu = s01gu * ma / 0xffff
- s01bu = s01bu * ma / 0xffff
- s01au = s01au * ma / 0xffff
- }
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sx1, smp.Y+sy1).RGBA()
- s11ru = s11ru * ma / 0xffff
- s11gu = s11gu * ma / 0xffff
- s11bu = s11bu * ma / 0xffff
- s11au = s11au * ma / 0xffff
- }
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA()
- if dstMask != nil {
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- }
- pa1 := 0xffff - pa
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- }
- }
-}
-
-func (ablInterpolator) transform_Image_Image_Src(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, opts *Options) {
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- sx -= 0.5
- sx0 := int(sx)
- xFrac0 := sx - float64(sx0)
- xFrac1 := 1 - xFrac0
- sx0 += bias.X
- sx1 := sx0 + 1
- if sx0 < sr.Min.X {
- sx0, sx1 = sr.Min.X, sr.Min.X
- xFrac0, xFrac1 = 0, 1
- } else if sx1 >= sr.Max.X {
- sx0, sx1 = sr.Max.X-1, sr.Max.X-1
- xFrac0, xFrac1 = 1, 0
- }
-
- sy -= 0.5
- sy0 := int(sy)
- yFrac0 := sy - float64(sy0)
- yFrac1 := 1 - yFrac0
- sy0 += bias.Y
- sy1 := sy0 + 1
- if sy0 < sr.Min.Y {
- sy0, sy1 = sr.Min.Y, sr.Min.Y
- yFrac0, yFrac1 = 0, 1
- } else if sy1 >= sr.Max.Y {
- sy0, sy1 = sr.Max.Y-1, sr.Max.Y-1
- yFrac0, yFrac1 = 1, 0
- }
-
- s00ru, s00gu, s00bu, s00au := src.At(sx0, sy0).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy0).RGBA()
- s00ru = s00ru * ma / 0xffff
- s00gu = s00gu * ma / 0xffff
- s00bu = s00bu * ma / 0xffff
- s00au = s00au * ma / 0xffff
- }
- s00r := float64(s00ru)
- s00g := float64(s00gu)
- s00b := float64(s00bu)
- s00a := float64(s00au)
- s10ru, s10gu, s10bu, s10au := src.At(sx1, sy0).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sx1, smp.Y+sy0).RGBA()
- s10ru = s10ru * ma / 0xffff
- s10gu = s10gu * ma / 0xffff
- s10bu = s10bu * ma / 0xffff
- s10au = s10au * ma / 0xffff
- }
- s10r := float64(s10ru)
- s10g := float64(s10gu)
- s10b := float64(s10bu)
- s10a := float64(s10au)
- s10r = xFrac1*s00r + xFrac0*s10r
- s10g = xFrac1*s00g + xFrac0*s10g
- s10b = xFrac1*s00b + xFrac0*s10b
- s10a = xFrac1*s00a + xFrac0*s10a
- s01ru, s01gu, s01bu, s01au := src.At(sx0, sy1).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sx0, smp.Y+sy1).RGBA()
- s01ru = s01ru * ma / 0xffff
- s01gu = s01gu * ma / 0xffff
- s01bu = s01bu * ma / 0xffff
- s01au = s01au * ma / 0xffff
- }
- s01r := float64(s01ru)
- s01g := float64(s01gu)
- s01b := float64(s01bu)
- s01a := float64(s01au)
- s11ru, s11gu, s11bu, s11au := src.At(sx1, sy1).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sx1, smp.Y+sy1).RGBA()
- s11ru = s11ru * ma / 0xffff
- s11gu = s11gu * ma / 0xffff
- s11bu = s11bu * ma / 0xffff
- s11au = s11au * ma / 0xffff
- }
- s11r := float64(s11ru)
- s11g := float64(s11gu)
- s11b := float64(s11bu)
- s11a := float64(s11au)
- s11r = xFrac1*s01r + xFrac0*s11r
- s11g = xFrac1*s01g + xFrac0*s11g
- s11b = xFrac1*s01b + xFrac0*s11b
- s11a = xFrac1*s01a + xFrac0*s11a
- s11r = yFrac1*s10r + yFrac0*s11r
- s11g = yFrac1*s10g + yFrac0*s11g
- s11b = yFrac1*s10b + yFrac0*s11b
- s11a = yFrac1*s10a + yFrac0*s11a
- pr := uint32(s11r)
- pg := uint32(s11g)
- pb := uint32(s11b)
- pa := uint32(s11a)
- if dstMask != nil {
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA()
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA()
- pr = pr * ma / 0xffff
- pg = pg * ma / 0xffff
- pb = pb * ma / 0xffff
- pa = pa * ma / 0xffff
- pa1 := 0xffff - ma
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- } else {
- dstColorRGBA64.R = uint16(pr)
- dstColorRGBA64.G = uint16(pg)
- dstColorRGBA64.B = uint16(pb)
- dstColorRGBA64.A = uint16(pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- }
- }
- }
-}
-
-func (z *kernelScaler) Scale(dst Image, dr image.Rectangle, src image.Image, sr image.Rectangle, op Op, opts *Options) {
- if z.dw != int32(dr.Dx()) || z.dh != int32(dr.Dy()) || z.sw != int32(sr.Dx()) || z.sh != int32(sr.Dy()) {
- z.kernel.Scale(dst, dr, src, sr, op, opts)
- return
- }
-
- var o Options
- if opts != nil {
- o = *opts
- }
-
- // adr is the affected destination pixels.
- adr := dst.Bounds().Intersect(dr)
- adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP)
- if adr.Empty() || sr.Empty() {
- return
- }
- // Make adr relative to dr.Min.
- adr = adr.Sub(dr.Min)
- if op == Over && o.SrcMask == nil && opaque(src) {
- op = Src
- }
-
- if _, ok := src.(*image.Uniform); ok && o.DstMask == nil && o.SrcMask == nil && sr.In(src.Bounds()) {
- Draw(dst, dr, src, src.Bounds().Min, op)
- return
- }
-
- // Create a temporary buffer:
- // scaleX distributes the source image's columns over the temporary image.
- // scaleY distributes the temporary image's rows over the destination image.
- var tmp [][4]float64
- if z.pool.New != nil {
- tmpp := z.pool.Get().(*[][4]float64)
- defer z.pool.Put(tmpp)
- tmp = *tmpp
- } else {
- tmp = z.makeTmpBuf()
- }
-
- // sr is the source pixels. If it extends beyond the src bounds,
- // we cannot use the type-specific fast paths, as they access
- // the Pix fields directly without bounds checking.
- //
- // Similarly, the fast paths assume that the masks are nil.
- if o.SrcMask != nil || !sr.In(src.Bounds()) {
- z.scaleX_Image(tmp, src, sr, &o)
- } else {
- switch src := src.(type) {
- case *image.Gray:
- z.scaleX_Gray(tmp, src, sr, &o)
- case *image.NRGBA:
- z.scaleX_NRGBA(tmp, src, sr, &o)
- case *image.RGBA:
- z.scaleX_RGBA(tmp, src, sr, &o)
- case *image.YCbCr:
- switch src.SubsampleRatio {
- default:
- z.scaleX_Image(tmp, src, sr, &o)
- case image.YCbCrSubsampleRatio444:
- z.scaleX_YCbCr444(tmp, src, sr, &o)
- case image.YCbCrSubsampleRatio422:
- z.scaleX_YCbCr422(tmp, src, sr, &o)
- case image.YCbCrSubsampleRatio420:
- z.scaleX_YCbCr420(tmp, src, sr, &o)
- case image.YCbCrSubsampleRatio440:
- z.scaleX_YCbCr440(tmp, src, sr, &o)
- }
- default:
- z.scaleX_Image(tmp, src, sr, &o)
- }
- }
-
- if o.DstMask != nil {
- switch op {
- case Over:
- z.scaleY_Image_Over(dst, dr, adr, tmp, &o)
- case Src:
- z.scaleY_Image_Src(dst, dr, adr, tmp, &o)
- }
- } else {
- switch op {
- case Over:
- switch dst := dst.(type) {
- case *image.RGBA:
- z.scaleY_RGBA_Over(dst, dr, adr, tmp, &o)
- default:
- z.scaleY_Image_Over(dst, dr, adr, tmp, &o)
- }
- case Src:
- switch dst := dst.(type) {
- case *image.RGBA:
- z.scaleY_RGBA_Src(dst, dr, adr, tmp, &o)
- default:
- z.scaleY_Image_Src(dst, dr, adr, tmp, &o)
- }
- }
- }
-}
-
-func (q *Kernel) Transform(dst Image, s2d f64.Aff3, src image.Image, sr image.Rectangle, op Op, opts *Options) {
- var o Options
- if opts != nil {
- o = *opts
- }
-
- dr := transformRect(&s2d, &sr)
- // adr is the affected destination pixels.
- adr := dst.Bounds().Intersect(dr)
- adr, o.DstMask = clipAffectedDestRect(adr, o.DstMask, o.DstMaskP)
- if adr.Empty() || sr.Empty() {
- return
- }
- if op == Over && o.SrcMask == nil && opaque(src) {
- op = Src
- }
- d2s := invert(&s2d)
- // bias is a translation of the mapping from dst coordinates to src
- // coordinates such that the latter temporarily have non-negative X
- // and Y coordinates. This allows us to write int(f) instead of
- // int(math.Floor(f)), since "round to zero" and "round down" are
- // equivalent when f >= 0, but the former is much cheaper. The X--
- // and Y-- are because the TransformLeaf methods have a "sx -= 0.5"
- // adjustment.
- bias := transformRect(&d2s, &adr).Min
- bias.X--
- bias.Y--
- d2s[2] -= float64(bias.X)
- d2s[5] -= float64(bias.Y)
- // Make adr relative to dr.Min.
- adr = adr.Sub(dr.Min)
-
- if u, ok := src.(*image.Uniform); ok && o.DstMask != nil && o.SrcMask != nil && sr.In(src.Bounds()) {
- transform_Uniform(dst, dr, adr, &d2s, u, sr, bias, op)
- return
- }
-
- xscale := abs(d2s[0])
- if s := abs(d2s[1]); xscale < s {
- xscale = s
- }
- yscale := abs(d2s[3])
- if s := abs(d2s[4]); yscale < s {
- yscale = s
- }
-
- // sr is the source pixels. If it extends beyond the src bounds,
- // we cannot use the type-specific fast paths, as they access
- // the Pix fields directly without bounds checking.
- //
- // Similarly, the fast paths assume that the masks are nil.
- if o.DstMask != nil || o.SrcMask != nil || !sr.In(src.Bounds()) {
- switch op {
- case Over:
- q.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- case Src:
- q.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- }
- } else {
- switch op {
- case Over:
- switch dst := dst.(type) {
- case *image.RGBA:
- switch src := src.(type) {
- case *image.NRGBA:
- q.transform_RGBA_NRGBA_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- case *image.RGBA:
- q.transform_RGBA_RGBA_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- default:
- q.transform_RGBA_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- }
- default:
- switch src := src.(type) {
- default:
- q.transform_Image_Image_Over(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- }
- }
- case Src:
- switch dst := dst.(type) {
- case *image.RGBA:
- switch src := src.(type) {
- case *image.Gray:
- q.transform_RGBA_Gray_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- case *image.NRGBA:
- q.transform_RGBA_NRGBA_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- case *image.RGBA:
- q.transform_RGBA_RGBA_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- case *image.YCbCr:
- switch src.SubsampleRatio {
- default:
- q.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- case image.YCbCrSubsampleRatio444:
- q.transform_RGBA_YCbCr444_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- case image.YCbCrSubsampleRatio422:
- q.transform_RGBA_YCbCr422_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- case image.YCbCrSubsampleRatio420:
- q.transform_RGBA_YCbCr420_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- case image.YCbCrSubsampleRatio440:
- q.transform_RGBA_YCbCr440_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- }
- default:
- q.transform_RGBA_Image_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- }
- default:
- switch src := src.(type) {
- default:
- q.transform_Image_Image_Src(dst, dr, adr, &d2s, src, sr, bias, xscale, yscale, &o)
- }
- }
- }
- }
-}
-
-func (z *kernelScaler) scaleX_Gray(tmp [][4]float64, src *image.Gray, sr image.Rectangle, opts *Options) {
- t := 0
- for y := int32(0); y < z.sh; y++ {
- for _, s := range z.horizontal.sources {
- var pr float64
- for _, c := range z.horizontal.contribs[s.i:s.j] {
- pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.Stride + (sr.Min.X + int(c.coord) - src.Rect.Min.X)
- pru := uint32(src.Pix[pi]) * 0x101
- pr += float64(pru) * c.weight
- }
- pr *= s.invTotalWeightFFFF
- tmp[t] = [4]float64{
- pr,
- pr,
- pr,
- 1,
- }
- t++
- }
- }
-}
-
-func (z *kernelScaler) scaleX_NRGBA(tmp [][4]float64, src *image.NRGBA, sr image.Rectangle, opts *Options) {
- t := 0
- for y := int32(0); y < z.sh; y++ {
- for _, s := range z.horizontal.sources {
- var pr, pg, pb, pa float64
- for _, c := range z.horizontal.contribs[s.i:s.j] {
- pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(c.coord)-src.Rect.Min.X)*4
- pau := uint32(src.Pix[pi+3]) * 0x101
- pru := uint32(src.Pix[pi+0]) * pau / 0xff
- pgu := uint32(src.Pix[pi+1]) * pau / 0xff
- pbu := uint32(src.Pix[pi+2]) * pau / 0xff
- pr += float64(pru) * c.weight
- pg += float64(pgu) * c.weight
- pb += float64(pbu) * c.weight
- pa += float64(pau) * c.weight
- }
- tmp[t] = [4]float64{
- pr * s.invTotalWeightFFFF,
- pg * s.invTotalWeightFFFF,
- pb * s.invTotalWeightFFFF,
- pa * s.invTotalWeightFFFF,
- }
- t++
- }
- }
-}
-
-func (z *kernelScaler) scaleX_RGBA(tmp [][4]float64, src *image.RGBA, sr image.Rectangle, opts *Options) {
- t := 0
- for y := int32(0); y < z.sh; y++ {
- for _, s := range z.horizontal.sources {
- var pr, pg, pb, pa float64
- for _, c := range z.horizontal.contribs[s.i:s.j] {
- pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.Stride + (sr.Min.X+int(c.coord)-src.Rect.Min.X)*4
- pru := uint32(src.Pix[pi+0]) * 0x101
- pgu := uint32(src.Pix[pi+1]) * 0x101
- pbu := uint32(src.Pix[pi+2]) * 0x101
- pau := uint32(src.Pix[pi+3]) * 0x101
- pr += float64(pru) * c.weight
- pg += float64(pgu) * c.weight
- pb += float64(pbu) * c.weight
- pa += float64(pau) * c.weight
- }
- tmp[t] = [4]float64{
- pr * s.invTotalWeightFFFF,
- pg * s.invTotalWeightFFFF,
- pb * s.invTotalWeightFFFF,
- pa * s.invTotalWeightFFFF,
- }
- t++
- }
- }
-}
-
-func (z *kernelScaler) scaleX_YCbCr444(tmp [][4]float64, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- t := 0
- for y := int32(0); y < z.sh; y++ {
- for _, s := range z.horizontal.sources {
- var pr, pg, pb float64
- for _, c := range z.horizontal.contribs[s.i:s.j] {
- pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X)
- pj := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.CStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pru := (pyy1 + 91881*pcr1) >> 8
- pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pbu := (pyy1 + 116130*pcb1) >> 8
- if pru < 0 {
- pru = 0
- } else if pru > 0xffff {
- pru = 0xffff
- }
- if pgu < 0 {
- pgu = 0
- } else if pgu > 0xffff {
- pgu = 0xffff
- }
- if pbu < 0 {
- pbu = 0
- } else if pbu > 0xffff {
- pbu = 0xffff
- }
-
- pr += float64(pru) * c.weight
- pg += float64(pgu) * c.weight
- pb += float64(pbu) * c.weight
- }
- tmp[t] = [4]float64{
- pr * s.invTotalWeightFFFF,
- pg * s.invTotalWeightFFFF,
- pb * s.invTotalWeightFFFF,
- 1,
- }
- t++
- }
- }
-}
-
-func (z *kernelScaler) scaleX_YCbCr422(tmp [][4]float64, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- t := 0
- for y := int32(0); y < z.sh; y++ {
- for _, s := range z.horizontal.sources {
- var pr, pg, pb float64
- for _, c := range z.horizontal.contribs[s.i:s.j] {
- pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X)
- pj := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.CStride + ((sr.Min.X+int(c.coord))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pru := (pyy1 + 91881*pcr1) >> 8
- pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pbu := (pyy1 + 116130*pcb1) >> 8
- if pru < 0 {
- pru = 0
- } else if pru > 0xffff {
- pru = 0xffff
- }
- if pgu < 0 {
- pgu = 0
- } else if pgu > 0xffff {
- pgu = 0xffff
- }
- if pbu < 0 {
- pbu = 0
- } else if pbu > 0xffff {
- pbu = 0xffff
- }
-
- pr += float64(pru) * c.weight
- pg += float64(pgu) * c.weight
- pb += float64(pbu) * c.weight
- }
- tmp[t] = [4]float64{
- pr * s.invTotalWeightFFFF,
- pg * s.invTotalWeightFFFF,
- pb * s.invTotalWeightFFFF,
- 1,
- }
- t++
- }
- }
-}
-
-func (z *kernelScaler) scaleX_YCbCr420(tmp [][4]float64, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- t := 0
- for y := int32(0); y < z.sh; y++ {
- for _, s := range z.horizontal.sources {
- var pr, pg, pb float64
- for _, c := range z.horizontal.contribs[s.i:s.j] {
- pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X)
- pj := ((sr.Min.Y+int(y))/2-src.Rect.Min.Y/2)*src.CStride + ((sr.Min.X+int(c.coord))/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pru := (pyy1 + 91881*pcr1) >> 8
- pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pbu := (pyy1 + 116130*pcb1) >> 8
- if pru < 0 {
- pru = 0
- } else if pru > 0xffff {
- pru = 0xffff
- }
- if pgu < 0 {
- pgu = 0
- } else if pgu > 0xffff {
- pgu = 0xffff
- }
- if pbu < 0 {
- pbu = 0
- } else if pbu > 0xffff {
- pbu = 0xffff
- }
-
- pr += float64(pru) * c.weight
- pg += float64(pgu) * c.weight
- pb += float64(pbu) * c.weight
- }
- tmp[t] = [4]float64{
- pr * s.invTotalWeightFFFF,
- pg * s.invTotalWeightFFFF,
- pb * s.invTotalWeightFFFF,
- 1,
- }
- t++
- }
- }
-}
-
-func (z *kernelScaler) scaleX_YCbCr440(tmp [][4]float64, src *image.YCbCr, sr image.Rectangle, opts *Options) {
- t := 0
- for y := int32(0); y < z.sh; y++ {
- for _, s := range z.horizontal.sources {
- var pr, pg, pb float64
- for _, c := range z.horizontal.contribs[s.i:s.j] {
- pi := (sr.Min.Y+int(y)-src.Rect.Min.Y)*src.YStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X)
- pj := ((sr.Min.Y+int(y))/2-src.Rect.Min.Y/2)*src.CStride + (sr.Min.X + int(c.coord) - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pru := (pyy1 + 91881*pcr1) >> 8
- pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pbu := (pyy1 + 116130*pcb1) >> 8
- if pru < 0 {
- pru = 0
- } else if pru > 0xffff {
- pru = 0xffff
- }
- if pgu < 0 {
- pgu = 0
- } else if pgu > 0xffff {
- pgu = 0xffff
- }
- if pbu < 0 {
- pbu = 0
- } else if pbu > 0xffff {
- pbu = 0xffff
- }
-
- pr += float64(pru) * c.weight
- pg += float64(pgu) * c.weight
- pb += float64(pbu) * c.weight
- }
- tmp[t] = [4]float64{
- pr * s.invTotalWeightFFFF,
- pg * s.invTotalWeightFFFF,
- pb * s.invTotalWeightFFFF,
- 1,
- }
- t++
- }
- }
-}
-
-func (z *kernelScaler) scaleX_Image(tmp [][4]float64, src image.Image, sr image.Rectangle, opts *Options) {
- t := 0
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- for y := int32(0); y < z.sh; y++ {
- for _, s := range z.horizontal.sources {
- var pr, pg, pb, pa float64
- for _, c := range z.horizontal.contribs[s.i:s.j] {
- pru, pgu, pbu, pau := src.At(sr.Min.X+int(c.coord), sr.Min.Y+int(y)).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+sr.Min.X+int(c.coord), smp.Y+sr.Min.Y+int(y)).RGBA()
- pru = pru * ma / 0xffff
- pgu = pgu * ma / 0xffff
- pbu = pbu * ma / 0xffff
- pau = pau * ma / 0xffff
- }
- pr += float64(pru) * c.weight
- pg += float64(pgu) * c.weight
- pb += float64(pbu) * c.weight
- pa += float64(pau) * c.weight
- }
- tmp[t] = [4]float64{
- pr * s.invTotalWeightFFFF,
- pg * s.invTotalWeightFFFF,
- pb * s.invTotalWeightFFFF,
- pa * s.invTotalWeightFFFF,
- }
- t++
- }
- }
-}
-
-func (z *kernelScaler) scaleY_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, tmp [][4]float64, opts *Options) {
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- d := (dr.Min.Y+adr.Min.Y-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+int(dx)-dst.Rect.Min.X)*4
- for _, s := range z.vertical.sources[adr.Min.Y:adr.Max.Y] {
- var pr, pg, pb, pa float64
- for _, c := range z.vertical.contribs[s.i:s.j] {
- p := &tmp[c.coord*z.dw+dx]
- pr += p[0] * c.weight
- pg += p[1] * c.weight
- pb += p[2] * c.weight
- pa += p[3] * c.weight
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- pr0 := uint32(ftou(pr * s.invTotalWeight))
- pg0 := uint32(ftou(pg * s.invTotalWeight))
- pb0 := uint32(ftou(pb * s.invTotalWeight))
- pa0 := uint32(ftou(pa * s.invTotalWeight))
- pa1 := (0xffff - uint32(pa0)) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr0) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg0) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb0) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa0) >> 8)
- d += dst.Stride
- }
- }
-}
-
-func (z *kernelScaler) scaleY_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, tmp [][4]float64, opts *Options) {
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- d := (dr.Min.Y+adr.Min.Y-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+int(dx)-dst.Rect.Min.X)*4
- for _, s := range z.vertical.sources[adr.Min.Y:adr.Max.Y] {
- var pr, pg, pb, pa float64
- for _, c := range z.vertical.contribs[s.i:s.j] {
- p := &tmp[c.coord*z.dw+dx]
- pr += p[0] * c.weight
- pg += p[1] * c.weight
- pb += p[2] * c.weight
- pa += p[3] * c.weight
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- dst.Pix[d+0] = uint8(ftou(pr*s.invTotalWeight) >> 8)
- dst.Pix[d+1] = uint8(ftou(pg*s.invTotalWeight) >> 8)
- dst.Pix[d+2] = uint8(ftou(pb*s.invTotalWeight) >> 8)
- dst.Pix[d+3] = uint8(ftou(pa*s.invTotalWeight) >> 8)
- d += dst.Stride
- }
- }
-}
-
-func (z *kernelScaler) scaleY_Image_Over(dst Image, dr, adr image.Rectangle, tmp [][4]float64, opts *Options) {
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- for dy, s := range z.vertical.sources[adr.Min.Y:adr.Max.Y] {
- var pr, pg, pb, pa float64
- for _, c := range z.vertical.contribs[s.i:s.j] {
- p := &tmp[c.coord*z.dw+dx]
- pr += p[0] * c.weight
- pg += p[1] * c.weight
- pb += p[2] * c.weight
- pa += p[3] * c.weight
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(adr.Min.Y+dy)).RGBA()
- pr0 := uint32(ftou(pr * s.invTotalWeight))
- pg0 := uint32(ftou(pg * s.invTotalWeight))
- pb0 := uint32(ftou(pb * s.invTotalWeight))
- pa0 := uint32(ftou(pa * s.invTotalWeight))
- if dstMask != nil {
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(adr.Min.Y+dy)).RGBA()
- pr0 = pr0 * ma / 0xffff
- pg0 = pg0 * ma / 0xffff
- pb0 = pb0 * ma / 0xffff
- pa0 = pa0 * ma / 0xffff
- }
- pa1 := 0xffff - pa0
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr0)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg0)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb0)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa0)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(adr.Min.Y+dy), dstColor)
- }
- }
-}
-
-func (z *kernelScaler) scaleY_Image_Src(dst Image, dr, adr image.Rectangle, tmp [][4]float64, opts *Options) {
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- for dy, s := range z.vertical.sources[adr.Min.Y:adr.Max.Y] {
- var pr, pg, pb, pa float64
- for _, c := range z.vertical.contribs[s.i:s.j] {
- p := &tmp[c.coord*z.dw+dx]
- pr += p[0] * c.weight
- pg += p[1] * c.weight
- pb += p[2] * c.weight
- pa += p[3] * c.weight
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- if dstMask != nil {
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(adr.Min.Y+dy)).RGBA()
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(adr.Min.Y+dy)).RGBA()
- pr := uint32(ftou(pr*s.invTotalWeight)) * ma / 0xffff
- pg := uint32(ftou(pg*s.invTotalWeight)) * ma / 0xffff
- pb := uint32(ftou(pb*s.invTotalWeight)) * ma / 0xffff
- pa := uint32(ftou(pa*s.invTotalWeight)) * ma / 0xffff
- pa1 := 0xffff - ma
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(adr.Min.Y+dy), dstColor)
- } else {
- dstColorRGBA64.R = ftou(pr * s.invTotalWeight)
- dstColorRGBA64.G = ftou(pg * s.invTotalWeight)
- dstColorRGBA64.B = ftou(pb * s.invTotalWeight)
- dstColorRGBA64.A = ftou(pa * s.invTotalWeight)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(adr.Min.Y+dy), dstColor)
- }
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_Gray_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.Gray, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pi := (ky-src.Rect.Min.Y)*src.Stride + (kx - src.Rect.Min.X)
- pru := uint32(src.Pix[pi]) * 0x101
- pr += float64(pru) * w
- }
- }
- }
- }
- out := uint8(fffftou(pr) >> 8)
- dst.Pix[d+0] = out
- dst.Pix[d+1] = out
- dst.Pix[d+2] = out
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_NRGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb, pa float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pi := (ky-src.Rect.Min.Y)*src.Stride + (kx-src.Rect.Min.X)*4
- pau := uint32(src.Pix[pi+3]) * 0x101
- pru := uint32(src.Pix[pi+0]) * pau / 0xff
- pgu := uint32(src.Pix[pi+1]) * pau / 0xff
- pbu := uint32(src.Pix[pi+2]) * pau / 0xff
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- pa += float64(pau) * w
- }
- }
- }
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- pr0 := uint32(fffftou(pr))
- pg0 := uint32(fffftou(pg))
- pb0 := uint32(fffftou(pb))
- pa0 := uint32(fffftou(pa))
- pa1 := (0xffff - uint32(pa0)) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr0) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg0) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb0) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa0) >> 8)
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_NRGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.NRGBA, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb, pa float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pi := (ky-src.Rect.Min.Y)*src.Stride + (kx-src.Rect.Min.X)*4
- pau := uint32(src.Pix[pi+3]) * 0x101
- pru := uint32(src.Pix[pi+0]) * pau / 0xff
- pgu := uint32(src.Pix[pi+1]) * pau / 0xff
- pbu := uint32(src.Pix[pi+2]) * pau / 0xff
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- pa += float64(pau) * w
- }
- }
- }
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
- dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
- dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
- dst.Pix[d+3] = uint8(fffftou(pa) >> 8)
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_RGBA_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb, pa float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pi := (ky-src.Rect.Min.Y)*src.Stride + (kx-src.Rect.Min.X)*4
- pru := uint32(src.Pix[pi+0]) * 0x101
- pgu := uint32(src.Pix[pi+1]) * 0x101
- pbu := uint32(src.Pix[pi+2]) * 0x101
- pau := uint32(src.Pix[pi+3]) * 0x101
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- pa += float64(pau) * w
- }
- }
- }
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- pr0 := uint32(fffftou(pr))
- pg0 := uint32(fffftou(pg))
- pb0 := uint32(fffftou(pb))
- pa0 := uint32(fffftou(pa))
- pa1 := (0xffff - uint32(pa0)) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr0) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg0) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb0) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa0) >> 8)
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_RGBA_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.RGBA, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb, pa float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pi := (ky-src.Rect.Min.Y)*src.Stride + (kx-src.Rect.Min.X)*4
- pru := uint32(src.Pix[pi+0]) * 0x101
- pgu := uint32(src.Pix[pi+1]) * 0x101
- pbu := uint32(src.Pix[pi+2]) * 0x101
- pau := uint32(src.Pix[pi+3]) * 0x101
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- pa += float64(pau) * w
- }
- }
- }
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
- dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
- dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
- dst.Pix[d+3] = uint8(fffftou(pa) >> 8)
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_YCbCr444_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pi := (ky-src.Rect.Min.Y)*src.YStride + (kx - src.Rect.Min.X)
- pj := (ky-src.Rect.Min.Y)*src.CStride + (kx - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pru := (pyy1 + 91881*pcr1) >> 8
- pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pbu := (pyy1 + 116130*pcb1) >> 8
- if pru < 0 {
- pru = 0
- } else if pru > 0xffff {
- pru = 0xffff
- }
- if pgu < 0 {
- pgu = 0
- } else if pgu > 0xffff {
- pgu = 0xffff
- }
- if pbu < 0 {
- pbu = 0
- } else if pbu > 0xffff {
- pbu = 0xffff
- }
-
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- }
- }
- }
- }
- dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
- dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
- dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_YCbCr422_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pi := (ky-src.Rect.Min.Y)*src.YStride + (kx - src.Rect.Min.X)
- pj := (ky-src.Rect.Min.Y)*src.CStride + ((kx)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pru := (pyy1 + 91881*pcr1) >> 8
- pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pbu := (pyy1 + 116130*pcb1) >> 8
- if pru < 0 {
- pru = 0
- } else if pru > 0xffff {
- pru = 0xffff
- }
- if pgu < 0 {
- pgu = 0
- } else if pgu > 0xffff {
- pgu = 0xffff
- }
- if pbu < 0 {
- pbu = 0
- } else if pbu > 0xffff {
- pbu = 0xffff
- }
-
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- }
- }
- }
- }
- dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
- dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
- dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_YCbCr420_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pi := (ky-src.Rect.Min.Y)*src.YStride + (kx - src.Rect.Min.X)
- pj := ((ky)/2-src.Rect.Min.Y/2)*src.CStride + ((kx)/2 - src.Rect.Min.X/2)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pru := (pyy1 + 91881*pcr1) >> 8
- pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pbu := (pyy1 + 116130*pcb1) >> 8
- if pru < 0 {
- pru = 0
- } else if pru > 0xffff {
- pru = 0xffff
- }
- if pgu < 0 {
- pgu = 0
- } else if pgu > 0xffff {
- pgu = 0xffff
- }
- if pbu < 0 {
- pbu = 0
- } else if pbu > 0xffff {
- pbu = 0xffff
- }
-
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- }
- }
- }
- }
- dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
- dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
- dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_YCbCr440_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src *image.YCbCr, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pi := (ky-src.Rect.Min.Y)*src.YStride + (kx - src.Rect.Min.X)
- pj := ((ky)/2-src.Rect.Min.Y/2)*src.CStride + (kx - src.Rect.Min.X)
-
- // This is an inline version of image/color/ycbcr.go's YCbCr.RGBA method.
- pyy1 := int(src.Y[pi]) * 0x10101
- pcb1 := int(src.Cb[pj]) - 128
- pcr1 := int(src.Cr[pj]) - 128
- pru := (pyy1 + 91881*pcr1) >> 8
- pgu := (pyy1 - 22554*pcb1 - 46802*pcr1) >> 8
- pbu := (pyy1 + 116130*pcb1) >> 8
- if pru < 0 {
- pru = 0
- } else if pru > 0xffff {
- pru = 0xffff
- }
- if pgu < 0 {
- pgu = 0
- } else if pgu > 0xffff {
- pgu = 0xffff
- }
- if pbu < 0 {
- pbu = 0
- } else if pbu > 0xffff {
- pbu = 0xffff
- }
-
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- }
- }
- }
- }
- dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
- dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
- dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
- dst.Pix[d+3] = 0xff
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_Image_Over(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb, pa float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pru, pgu, pbu, pau := src.At(kx, ky).RGBA()
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- pa += float64(pau) * w
- }
- }
- }
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- pr0 := uint32(fffftou(pr))
- pg0 := uint32(fffftou(pg))
- pb0 := uint32(fffftou(pb))
- pa0 := uint32(fffftou(pa))
- pa1 := (0xffff - uint32(pa0)) * 0x101
- dst.Pix[d+0] = uint8((uint32(dst.Pix[d+0])*pa1/0xffff + pr0) >> 8)
- dst.Pix[d+1] = uint8((uint32(dst.Pix[d+1])*pa1/0xffff + pg0) >> 8)
- dst.Pix[d+2] = uint8((uint32(dst.Pix[d+2])*pa1/0xffff + pb0) >> 8)
- dst.Pix[d+3] = uint8((uint32(dst.Pix[d+3])*pa1/0xffff + pa0) >> 8)
- }
- }
-}
-
-func (q *Kernel) transform_RGBA_Image_Src(dst *image.RGBA, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- d := (dr.Min.Y+int(dy)-dst.Rect.Min.Y)*dst.Stride + (dr.Min.X+adr.Min.X-dst.Rect.Min.X)*4
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx, d = dx+1, d+4 {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb, pa float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pru, pgu, pbu, pau := src.At(kx, ky).RGBA()
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- pa += float64(pau) * w
- }
- }
- }
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- dst.Pix[d+0] = uint8(fffftou(pr) >> 8)
- dst.Pix[d+1] = uint8(fffftou(pg) >> 8)
- dst.Pix[d+2] = uint8(fffftou(pb) >> 8)
- dst.Pix[d+3] = uint8(fffftou(pa) >> 8)
- }
- }
-}
-
-func (q *Kernel) transform_Image_Image_Over(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb, pa float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pru, pgu, pbu, pau := src.At(kx, ky).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+kx, smp.Y+ky).RGBA()
- pru = pru * ma / 0xffff
- pgu = pgu * ma / 0xffff
- pbu = pbu * ma / 0xffff
- pau = pau * ma / 0xffff
- }
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- pa += float64(pau) * w
- }
- }
- }
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA()
- pr0 := uint32(fffftou(pr))
- pg0 := uint32(fffftou(pg))
- pb0 := uint32(fffftou(pb))
- pa0 := uint32(fffftou(pa))
- if dstMask != nil {
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA()
- pr0 = pr0 * ma / 0xffff
- pg0 = pg0 * ma / 0xffff
- pb0 = pb0 * ma / 0xffff
- pa0 = pa0 * ma / 0xffff
- }
- pa1 := 0xffff - pa0
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr0)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg0)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb0)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa0)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- }
- }
-}
-
-func (q *Kernel) transform_Image_Image_Src(dst Image, dr, adr image.Rectangle, d2s *f64.Aff3, src image.Image, sr image.Rectangle, bias image.Point, xscale, yscale float64, opts *Options) {
- // When shrinking, broaden the effective kernel support so that we still
- // visit every source pixel.
- xHalfWidth, xKernelArgScale := q.Support, 1.0
- if xscale > 1 {
- xHalfWidth *= xscale
- xKernelArgScale = 1 / xscale
- }
- yHalfWidth, yKernelArgScale := q.Support, 1.0
- if yscale > 1 {
- yHalfWidth *= yscale
- yKernelArgScale = 1 / yscale
- }
-
- xWeights := make([]float64, 1+2*int(math.Ceil(xHalfWidth)))
- yWeights := make([]float64, 1+2*int(math.Ceil(yHalfWidth)))
-
- srcMask, smp := opts.SrcMask, opts.SrcMaskP
- dstMask, dmp := opts.DstMask, opts.DstMaskP
- dstColorRGBA64 := &color.RGBA64{}
- dstColor := color.Color(dstColorRGBA64)
- for dy := int32(adr.Min.Y); dy < int32(adr.Max.Y); dy++ {
- dyf := float64(dr.Min.Y+int(dy)) + 0.5
- for dx := int32(adr.Min.X); dx < int32(adr.Max.X); dx++ {
- dxf := float64(dr.Min.X+int(dx)) + 0.5
- sx := d2s[0]*dxf + d2s[1]*dyf + d2s[2]
- sy := d2s[3]*dxf + d2s[4]*dyf + d2s[5]
- if !(image.Point{int(sx) + bias.X, int(sy) + bias.Y}).In(sr) {
- continue
- }
-
- // TODO: adjust the bias so that we can use int(f) instead
- // of math.Floor(f) and math.Ceil(f).
- sx += float64(bias.X)
- sx -= 0.5
- ix := int(math.Floor(sx - xHalfWidth))
- if ix < sr.Min.X {
- ix = sr.Min.X
- }
- jx := int(math.Ceil(sx + xHalfWidth))
- if jx > sr.Max.X {
- jx = sr.Max.X
- }
-
- totalXWeight := 0.0
- for kx := ix; kx < jx; kx++ {
- xWeight := 0.0
- if t := abs((sx - float64(kx)) * xKernelArgScale); t < q.Support {
- xWeight = q.At(t)
- }
- xWeights[kx-ix] = xWeight
- totalXWeight += xWeight
- }
- for x := range xWeights[:jx-ix] {
- xWeights[x] /= totalXWeight
- }
-
- sy += float64(bias.Y)
- sy -= 0.5
- iy := int(math.Floor(sy - yHalfWidth))
- if iy < sr.Min.Y {
- iy = sr.Min.Y
- }
- jy := int(math.Ceil(sy + yHalfWidth))
- if jy > sr.Max.Y {
- jy = sr.Max.Y
- }
-
- totalYWeight := 0.0
- for ky := iy; ky < jy; ky++ {
- yWeight := 0.0
- if t := abs((sy - float64(ky)) * yKernelArgScale); t < q.Support {
- yWeight = q.At(t)
- }
- yWeights[ky-iy] = yWeight
- totalYWeight += yWeight
- }
- for y := range yWeights[:jy-iy] {
- yWeights[y] /= totalYWeight
- }
-
- var pr, pg, pb, pa float64
- for ky := iy; ky < jy; ky++ {
- if yWeight := yWeights[ky-iy]; yWeight != 0 {
- for kx := ix; kx < jx; kx++ {
- if w := xWeights[kx-ix] * yWeight; w != 0 {
- pru, pgu, pbu, pau := src.At(kx, ky).RGBA()
- if srcMask != nil {
- _, _, _, ma := srcMask.At(smp.X+kx, smp.Y+ky).RGBA()
- pru = pru * ma / 0xffff
- pgu = pgu * ma / 0xffff
- pbu = pbu * ma / 0xffff
- pau = pau * ma / 0xffff
- }
- pr += float64(pru) * w
- pg += float64(pgu) * w
- pb += float64(pbu) * w
- pa += float64(pau) * w
- }
- }
- }
- }
-
- if pr > pa {
- pr = pa
- }
- if pg > pa {
- pg = pa
- }
- if pb > pa {
- pb = pa
- }
-
- if dstMask != nil {
- qr, qg, qb, qa := dst.At(dr.Min.X+int(dx), dr.Min.Y+int(dy)).RGBA()
- _, _, _, ma := dstMask.At(dmp.X+dr.Min.X+int(dx), dmp.Y+dr.Min.Y+int(dy)).RGBA()
- pr := uint32(fffftou(pr)) * ma / 0xffff
- pg := uint32(fffftou(pg)) * ma / 0xffff
- pb := uint32(fffftou(pb)) * ma / 0xffff
- pa := uint32(fffftou(pa)) * ma / 0xffff
- pa1 := 0xffff - ma
- dstColorRGBA64.R = uint16(qr*pa1/0xffff + pr)
- dstColorRGBA64.G = uint16(qg*pa1/0xffff + pg)
- dstColorRGBA64.B = uint16(qb*pa1/0xffff + pb)
- dstColorRGBA64.A = uint16(qa*pa1/0xffff + pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- } else {
- dstColorRGBA64.R = fffftou(pr)
- dstColorRGBA64.G = fffftou(pg)
- dstColorRGBA64.B = fffftou(pb)
- dstColorRGBA64.A = fffftou(pa)
- dst.Set(dr.Min.X+int(dx), dr.Min.Y+int(dy), dstColor)
- }
- }
- }
-}