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-rw-r--r--elegoo/pb/pb_encode.h170
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diff --git a/elegoo/pb/pb_encode.h b/elegoo/pb/pb_encode.h
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-/* pb_encode.h: Functions to encode protocol buffers. Depends on pb_encode.c.
- * The main function is pb_encode. You also need an output stream, and the
- * field descriptions created by nanopb_generator.py.
- */
-
-#ifndef PB_ENCODE_H_INCLUDED
-#define PB_ENCODE_H_INCLUDED
-
-#include "pb.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* Structure for defining custom output streams. You will need to provide
- * a callback function to write the bytes to your storage, which can be
- * for example a file or a network socket.
- *
- * The callback must conform to these rules:
- *
- * 1) Return false on IO errors. This will cause encoding to abort.
- * 2) You can use state to store your own data (e.g. buffer pointer).
- * 3) pb_write will update bytes_written after your callback runs.
- * 4) Substreams will modify max_size and bytes_written. Don't use them
- * to calculate any pointers.
- */
-struct pb_ostream_s
-{
-#ifdef PB_BUFFER_ONLY
- /* Callback pointer is not used in buffer-only configuration.
- * Having an int pointer here allows binary compatibility but
- * gives an error if someone tries to assign callback function.
- * Also, NULL pointer marks a 'sizing stream' that does not
- * write anything.
- */
- int *callback;
-#else
- bool (*callback)(pb_ostream_t *stream, const pb_byte_t *buf, size_t count);
-#endif
- void *state; /* Free field for use by callback implementation. */
- size_t max_size; /* Limit number of output bytes written (or use SIZE_MAX). */
- size_t bytes_written; /* Number of bytes written so far. */
-
-#ifndef PB_NO_ERRMSG
- const char *errmsg;
-#endif
-};
-
-/***************************
- * Main encoding functions *
- ***************************/
-
-/* Encode a single protocol buffers message from C structure into a stream.
- * Returns true on success, false on any failure.
- * The actual struct pointed to by src_struct must match the description in fields.
- * All required fields in the struct are assumed to have been filled in.
- *
- * Example usage:
- * MyMessage msg = {};
- * uint8_t buffer[64];
- * pb_ostream_t stream;
- *
- * msg.field1 = 42;
- * stream = pb_ostream_from_buffer(buffer, sizeof(buffer));
- * pb_encode(&stream, MyMessage_fields, &msg);
- */
-bool pb_encode(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct);
-
-/* Same as pb_encode, but prepends the length of the message as a varint.
- * Corresponds to writeDelimitedTo() in Google's protobuf API.
- */
-bool pb_encode_delimited(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct);
-
-/* Same as pb_encode, but appends a null byte to the message for termination.
- * NOTE: This behaviour is not supported in most other protobuf implementations, so pb_encode_delimited()
- * is a better option for compatibility.
- */
-bool pb_encode_nullterminated(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct);
-
-/* Encode the message to get the size of the encoded data, but do not store
- * the data. */
-bool pb_get_encoded_size(size_t *size, const pb_field_t fields[], const void *src_struct);
-
-/**************************************
- * Functions for manipulating streams *
- **************************************/
-
-/* Create an output stream for writing into a memory buffer.
- * The number of bytes written can be found in stream.bytes_written after
- * encoding the message.
- *
- * Alternatively, you can use a custom stream that writes directly to e.g.
- * a file or a network socket.
- */
-pb_ostream_t pb_ostream_from_buffer(pb_byte_t *buf, size_t bufsize);
-
-/* Pseudo-stream for measuring the size of a message without actually storing
- * the encoded data.
- *
- * Example usage:
- * MyMessage msg = {};
- * pb_ostream_t stream = PB_OSTREAM_SIZING;
- * pb_encode(&stream, MyMessage_fields, &msg);
- * printf("Message size is %d\n", stream.bytes_written);
- */
-#ifndef PB_NO_ERRMSG
-#define PB_OSTREAM_SIZING {0,0,0,0,0}
-#else
-#define PB_OSTREAM_SIZING {0,0,0,0}
-#endif
-
-/* Function to write into a pb_ostream_t stream. You can use this if you need
- * to append or prepend some custom headers to the message.
- */
-bool pb_write(pb_ostream_t *stream, const pb_byte_t *buf, size_t count);
-
-
-/************************************************
- * Helper functions for writing field callbacks *
- ************************************************/
-
-/* Encode field header based on type and field number defined in the field
- * structure. Call this from the callback before writing out field contents. */
-bool pb_encode_tag_for_field(pb_ostream_t *stream, const pb_field_t *field);
-
-/* Encode field header by manually specifing wire type. You need to use this
- * if you want to write out packed arrays from a callback field. */
-bool pb_encode_tag(pb_ostream_t *stream, pb_wire_type_t wiretype, uint32_t field_number);
-
-/* Encode an integer in the varint format.
- * This works for bool, enum, int32, int64, uint32 and uint64 field types. */
-#ifndef PB_WITHOUT_64BIT
-bool pb_encode_varint(pb_ostream_t *stream, uint64_t value);
-#else
-bool pb_encode_varint(pb_ostream_t *stream, uint32_t value);
-#endif
-
-/* Encode an integer in the zig-zagged svarint format.
- * This works for sint32 and sint64. */
-#ifndef PB_WITHOUT_64BIT
-bool pb_encode_svarint(pb_ostream_t *stream, int64_t value);
-#else
-bool pb_encode_svarint(pb_ostream_t *stream, int32_t value);
-#endif
-
-/* Encode a string or bytes type field. For strings, pass strlen(s) as size. */
-bool pb_encode_string(pb_ostream_t *stream, const pb_byte_t *buffer, size_t size);
-
-/* Encode a fixed32, sfixed32 or float value.
- * You need to pass a pointer to a 4-byte wide C variable. */
-bool pb_encode_fixed32(pb_ostream_t *stream, const void *value);
-
-#ifndef PB_WITHOUT_64BIT
-/* Encode a fixed64, sfixed64 or double value.
- * You need to pass a pointer to a 8-byte wide C variable. */
-bool pb_encode_fixed64(pb_ostream_t *stream, const void *value);
-#endif
-
-/* Encode a submessage field.
- * You need to pass the pb_field_t array and pointer to struct, just like
- * with pb_encode(). This internally encodes the submessage twice, first to
- * calculate message size and then to actually write it out.
- */
-bool pb_encode_submessage(pb_ostream_t *stream, const pb_field_t fields[], const void *src_struct);
-
-#ifdef __cplusplus
-} /* extern "C" */
-#endif
-
-#endif