vp9_compressed_header_parser.cc | Explore in Territory

// 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_compressed_header_parser.h"

#include "base/logging.h"

namespace media {

namespace {

// 6.3.5 Inv remap prob syntax, inv_remap_prob().
Vp9Prob InvRemapProb(uint8_t delta_prob, uint8_t prob) { … }

}  // namespace

Vp9CompressedHeaderParser::Vp9CompressedHeaderParser() = default;

// 6.3 Compressed header syntax
bool Vp9CompressedHeaderParser::ParseNoContext(const uint8_t* stream,
                                               off_t frame_size,
                                               Vp9FrameHeader* fhdr) { … }

// 6.3.1 Tx mode syntax
void Vp9CompressedHeaderParser::ReadTxMode(Vp9FrameHeader* fhdr) { … }

// 6.3.4 Decode term subexp syntax
uint8_t Vp9CompressedHeaderParser::DecodeTermSubexp() { … }

// 6.3.3 Diff update prob syntax
void Vp9CompressedHeaderParser::DiffUpdateProb(Vp9Prob* prob) { … }

// Helper function to DiffUpdateProb an array of probs.
template <int N>
void Vp9CompressedHeaderParser::DiffUpdateProbArray(Vp9Prob (&prob_array)[N]) { … }

// 6.3.2 Tx mode probs syntax
void Vp9CompressedHeaderParser::ReadTxModeProbs(
    Vp9FrameContext* frame_context) { … }

// 6.3.7 Coef probs syntax
void Vp9CompressedHeaderParser::ReadCoefProbs(Vp9FrameHeader* fhdr) { … }

// 6.3.8 Skip probs syntax
void Vp9CompressedHeaderParser::ReadSkipProb(Vp9FrameContext* frame_context) { … }

// 6.3.9 Inter mode probs syntax
void Vp9CompressedHeaderParser::ReadInterModeProbs(
    Vp9FrameContext* frame_context) { … }

// 6.3.10 Interp filter probs syntax
void Vp9CompressedHeaderParser::ReadInterpFilterProbs(
    Vp9FrameContext* frame_context) { … }

// 6.3.11 Intra inter probs syntax
void Vp9CompressedHeaderParser::ReadIsInterProbs(
    Vp9FrameContext* frame_context) { … }

// 6.3.12 Frame reference mode syntax
void Vp9CompressedHeaderParser::ReadFrameReferenceMode(Vp9FrameHeader* fhdr) { … }

// 6.3.13 Frame reference mode probs syntax
void Vp9CompressedHeaderParser::ReadFrameReferenceModeProbs(
    Vp9FrameHeader* fhdr) { … }

// 6.3.14 Y mode probs syntax
void Vp9CompressedHeaderParser::ReadYModeProbs(Vp9FrameContext* frame_context) { … }

// 6.3.15 Partition probs syntax
void Vp9CompressedHeaderParser::ReadPartitionProbs(
    Vp9FrameContext* frame_context) { … }

// 6.3.16 MV probs syntax
void Vp9CompressedHeaderParser::ReadMvProbs(bool allow_high_precision_mv,
                                            Vp9FrameContext* frame_context) { … }

// 6.3.17 Update mv prob syntax
void Vp9CompressedHeaderParser::UpdateMvProb(Vp9Prob* prob) { … }

// Helper function to UpdateMvProb an array of probs.
template <int N>
void Vp9CompressedHeaderParser::UpdateMvProbArray(Vp9Prob (&prob_array)[N]) { … }

// 6.3 Compressed header syntax
bool Vp9CompressedHeaderParser::ParseInternal(const uint8_t* stream,
                                              off_t frame_size,
                                              Vp9FrameHeader* fhdr) { … }

}  // namespace media
chromium/media/parsers/vp9_compressed_header_parser.cc
