Parse VP9 compressed header

media/filters/vp9_uncompressed_header_parser.h

Index: media/filters/vp9_uncompressed_header_parser.h
diff --git a/media/filters/vp9_uncompressed_header_parser.h b/media/filters/vp9_uncompressed_header_parser.h
new file mode 100644
index 0000000000000000000000000000000000000000..ea85af4769b1baf2d68bdb4627e4bf08ea20bb79
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+++ b/media/filters/vp9_uncompressed_header_parser.h
@@ -0,0 +1,48 @@
+// 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_