chromium/media/parsers/vp8_parser.h

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// This file contains an implementation of a VP8 raw stream parser,
// as defined in RFC 6386.

#ifndef MEDIA_PARSERS_VP8_PARSER_H_
#define MEDIA_PARSERS_VP8_PARSER_H_

#include <stddef.h>
#include <stdint.h>

#include "base/memory/raw_ptr.h"
#include "media/base/media_export.h"
#include "media/parsers/vp8_bool_decoder.h"

namespace media {

// See spec for definitions of values/fields.
const size_t kMaxMBSegments = …;
const size_t kNumMBFeatureTreeProbs = …;

// Member of Vp8FrameHeader and will be 0-initialized
// in Vp8FrameHeader's constructor.
struct Vp8SegmentationHeader { … };

const size_t kNumBlockContexts = …;

// Member of Vp8FrameHeader and will be 0-initialized
// in Vp8FrameHeader's constructor.
struct Vp8LoopFilterHeader { … };

// Member of Vp8FrameHeader and will be 0-initialized
// in Vp8FrameHeader's constructor.
struct Vp8QuantizationHeader { … };

const size_t kNumBlockTypes = …;
const size_t kNumCoeffBands = …;
const size_t kNumPrevCoeffContexts = …;
const size_t kNumEntropyNodes = …;

const size_t kNumMVContexts = …;
const size_t kNumMVProbs = …;

const size_t kNumYModeProbs = …;
const size_t kNumUVModeProbs = …;

// Member of Vp8FrameHeader and will be 0-initialized
// in Vp8FrameHeader's constructor.
struct Vp8EntropyHeader { … };

const size_t kMaxDCTPartitions = …;
const size_t kNumVp8ReferenceBuffers = …;

enum Vp8RefType : size_t { … };

struct MEDIA_EXPORT Vp8FrameHeader { … };

// A parser for raw VP8 streams as specified in RFC 6386.
class MEDIA_EXPORT Vp8Parser { … };

}  // namespace media

#endif  // MEDIA_PARSERS_VP8_PARSER_H_