// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Note: ported from Chromium commit head: e5a9a62
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#ifndef VP9_UNCOMPRESSED_HEADER_PARSER_H_
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#define VP9_UNCOMPRESSED_HEADER_PARSER_H_
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#include "vp9_parser.h"
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#include "vp9_raw_bits_reader.h"
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namespace media {
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class Vp9UncompressedHeaderParser {
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public:
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Vp9UncompressedHeaderParser(Vp9Parser::Context* context);
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// Parses VP9 uncompressed header in |stream| with |frame_size| into |fhdr|.
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// Returns true if no error.
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bool Parse(const uint8_t* stream, off_t frame_size, Vp9FrameHeader* fhdr);
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private:
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uint8_t ReadProfile();
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bool VerifySyncCode();
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bool ReadColorConfig(Vp9FrameHeader* fhdr);
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void ReadFrameSize(Vp9FrameHeader* fhdr);
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bool ReadFrameSizeFromRefs(Vp9FrameHeader* fhdr);
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void ReadRenderSize(Vp9FrameHeader* fhdr);
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Vp9InterpolationFilter ReadInterpolationFilter();
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void ResetLoopfilter();
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void SetupPastIndependence(Vp9FrameHeader* fhdr);
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void ReadLoopFilterParams();
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void ReadQuantizationParams(Vp9QuantizationParams* quants);
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int8_t ReadDeltaQ();
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uint8_t ReadProb();
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bool ReadSegmentationParams();
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bool ReadTileInfo(Vp9FrameHeader* fhdr);
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// Raw bits reader for uncompressed frame header.
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Vp9RawBitsReader reader_;
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Vp9Parser::Context* context_;
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DISALLOW_COPY_AND_ASSIGN(Vp9UncompressedHeaderParser);
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};
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} // namespace media
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#endif // VP9_UNCOMPRESSED_HEADER_PARSER_H_
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