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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_FILTERS_VP9_UNCOMPRESSED_HEADER_PARSER_H_
#define MEDIA_FILTERS_VP9_UNCOMPRESSED_HEADER_PARSER_H_
#include "media/filters/vp9_parser.h"
#include "media/filters/vp9_raw_bits_reader.h"
namespace media {
class Vp9UncompressedHeaderParser {
public:
Vp9UncompressedHeaderParser(Vp9Parser::Context* context);
// Parses VP9 uncompressed header in |stream| with |frame_size| into |fhdr|.
// Returns true if no error.
bool Parse(const uint8_t* stream, off_t frame_size, Vp9FrameHeader* fhdr);
private:
uint8_t ReadProfile();
bool VerifySyncCode();
bool ReadColorConfig(Vp9FrameHeader* fhdr);
void ReadFrameSize(Vp9FrameHeader* fhdr);
bool ReadFrameSizeFromRefs(Vp9FrameHeader* fhdr);
void ReadRenderSize(Vp9FrameHeader* fhdr);
Vp9InterpolationFilter ReadInterpolationFilter();
void ResetLoopfilter();
void SetupPastIndependence(Vp9FrameHeader* fhdr);
void ReadLoopFilterParams();
void ReadQuantizationParams(Vp9QuantizationParams* quants);
int8_t ReadDeltaQ();
uint8_t ReadProb();
bool ReadSegmentationParams();
bool ReadTileInfo(Vp9FrameHeader* fhdr);
// Raw bits reader for uncompressed frame header.
Vp9RawBitsReader reader_;
Vp9Parser::Context* context_;
DISALLOW_COPY_AND_ASSIGN(Vp9UncompressedHeaderParser);
};
} // namespace media
#endif // MEDIA_FILTERS_VP9_UNCOMPRESSED_HEADER_PARSER_H_