godot/thirdparty/libwebp/src/enc/syntax_enc.c

// Copyright 2011 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Header syntax writing
//
// Author: Skal ([email protected])

#include <assert.h>

#include "src/utils/utils.h"
#include "src/webp/format_constants.h"  // RIFF constants
#include "src/webp/mux_types.h"         // ALPHA_FLAG
#include "src/enc/vp8i_enc.h"

//------------------------------------------------------------------------------
// Helper functions

static int IsVP8XNeeded(const VP8Encoder* const enc) { … }

static int PutPaddingByte(const WebPPicture* const pic) { … }

//------------------------------------------------------------------------------
// Writers for header's various pieces (in order of appearance)

static WebPEncodingError PutRIFFHeader(const VP8Encoder* const enc,
                                       size_t riff_size) { … }

static WebPEncodingError PutVP8XHeader(const VP8Encoder* const enc) { … }

static WebPEncodingError PutAlphaChunk(const VP8Encoder* const enc) { … }

static WebPEncodingError PutVP8Header(const WebPPicture* const pic,
                                      size_t vp8_size) { … }

static WebPEncodingError PutVP8FrameHeader(const WebPPicture* const pic,
                                           int profile, size_t size0) { … }

// WebP Headers.
static int PutWebPHeaders(const VP8Encoder* const enc, size_t size0,
                          size_t vp8_size, size_t riff_size) { … }

// Segmentation header
static void PutSegmentHeader(VP8BitWriter* const bw,
                             const VP8Encoder* const enc) { … }

// Filtering parameters header
static void PutFilterHeader(VP8BitWriter* const bw,
                            const VP8EncFilterHeader* const hdr) { … }

// Nominal quantization parameters
static void PutQuant(VP8BitWriter* const bw,
                     const VP8Encoder* const enc) { … }

// Partition sizes
static int EmitPartitionsSize(const VP8Encoder* const enc,
                              WebPPicture* const pic) { … }

//------------------------------------------------------------------------------

static int GeneratePartition0(VP8Encoder* const enc) { … }

void VP8EncFreeBitWriters(VP8Encoder* const enc) { … }

int VP8EncWrite(VP8Encoder* const enc) { … }

//------------------------------------------------------------------------------