Parse VP9 compressed header

media/filters/vp9_raw_bits_reader.cc

 // Copyright 2015 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.
 
 #include "media/filters/vp9_raw_bits_reader.h"
 
 #include <limits.h>
 
 #include "base/logging.h"
 #include "media/base/bit_reader.h"
@@ skipping 34 matching lines @@
 int Vp9RawBitsReader::ReadSignedLiteral(int bits) {
   int value = ReadLiteral(bits);
   return ReadBool() ? -value : value;
 }
 
 size_t Vp9RawBitsReader::GetBytesRead() const {
   DCHECK(reader_);
   return (reader_->bits_read() + 7) / 8;
 }
 
+bool Vp9RawBitsReader::ConsumeTrailingBits() {
+  DCHECK(reader_);
+  int bits_left = GetBytesRead() * 8 - reader_->bits_read();
+  return ReadLiteral(bits_left) == 0;
+}
+
 }  // namespace media