chromium/media/parsers/vp9_uncompressed_header_parser.cc

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "media/parsers/vp9_uncompressed_header_parser.h"

#include <type_traits>

#include "base/logging.h"

namespace media {

namespace {

// 10.5 Default probability tables
Vp9FrameContext kVp9DefaultFrameContext = …;

// Helper function for Vp9Parser::ReadTileInfo. Defined as
// calc_min_log2_tile_cols in spec 6.2.14 Tile size calculation.
int GetMinLog2TileCols(int sb64_cols) { … }

// Helper function for Vp9Parser::ReadTileInfo. Defined as
// calc_max_log2_tile_cols in spec 6.2.14 Tile size calculation.
int GetMaxLog2TileCols(int sb64_cols) { … }

}  // namespace

Vp9UncompressedHeaderParser::Vp9UncompressedHeaderParser(
    Vp9Parser::Context* context)
    : … { … }

const Vp9FrameContext&
Vp9UncompressedHeaderParser::GetVp9DefaultFrameContextForTesting() const { … }

uint8_t Vp9UncompressedHeaderParser::ReadProfile() { … }

// 6.2.1 Frame sync syntax
bool Vp9UncompressedHeaderParser::VerifySyncCode() { … }

// 6.2.2 Color config syntax
bool Vp9UncompressedHeaderParser::ReadColorConfig(Vp9FrameHeader* fhdr) { … }

// 6.2.3 Frame size syntax
void Vp9UncompressedHeaderParser::ReadFrameSize(Vp9FrameHeader* fhdr) { … }

// 6.2.4 Render size syntax
void Vp9UncompressedHeaderParser::ReadRenderSize(Vp9FrameHeader* fhdr) { … }

// 6.2.5 Frame size with refs syntax
bool Vp9UncompressedHeaderParser::ReadFrameSizeFromRefs(Vp9FrameHeader* fhdr) { … }

// 6.2.7 Interpolation filter syntax
Vp9InterpolationFilter Vp9UncompressedHeaderParser::ReadInterpolationFilter() { … }

void Vp9UncompressedHeaderParser::SetupPastIndependence(Vp9FrameHeader* fhdr) { … }

// 6.2.8 Loop filter params syntax
void Vp9UncompressedHeaderParser::ReadLoopFilterParams() { … }

// 6.2.9 Quantization params syntax
void Vp9UncompressedHeaderParser::ReadQuantizationParams(
    Vp9QuantizationParams* quants) { … }

// 6.2.10 Delta quantizer syntax
int8_t Vp9UncompressedHeaderParser::ReadDeltaQ() { … }

// 6.2.11 Segmentation params syntax
bool Vp9UncompressedHeaderParser::ReadSegmentationParams() { … }

// 6.2.12 Probability syntax
uint8_t Vp9UncompressedHeaderParser::ReadProb() { … }

// 6.2.13 Tile info syntax
bool Vp9UncompressedHeaderParser::ReadTileInfo(Vp9FrameHeader* fhdr) { … }

void Vp9UncompressedHeaderParser::ResetLoopfilter() { … }

// 6.2 Uncompressed header syntax
bool Vp9UncompressedHeaderParser::Parse(const uint8_t* stream,
                                        off_t frame_size,
                                        Vp9FrameHeader* fhdr) { … }

}  // namespace media