Add config change handling to SourceBufferStream & ChunkDemuxer

media/base/audio_decoder_config.cc

 // Copyright (c) 2012 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/base/audio_decoder_config.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "media/audio/sample_rates.h"
 #include "media/base/limits.h"
@@ skipping 63 matching lines @@
 
 bool AudioDecoderConfig::IsValidConfig() const {
   return codec_ != kUnknownAudioCodec &&
       channel_layout_ != CHANNEL_LAYOUT_UNSUPPORTED &&
       bits_per_channel_ > 0 &&
       bits_per_channel_ <= limits::kMaxBitsPerSample &&
       samples_per_second_ > 0 &&
       samples_per_second_ <= limits::kMaxSampleRate;
 }
 
+bool AudioDecoderConfig::Matches(const AudioDecoderConfig& config) const {
+  return ((codec() == config.codec()) &&
+          (bits_per_channel() == config.bits_per_channel()) &&
+          (channel_layout() == config.channel_layout()) &&
+          (samples_per_second() == config.samples_per_second()) &&
+          (extra_data_size() == config.extra_data_size()) &&
+          (!extra_data() || !memcmp(extra_data(), config.extra_data(),
+                                    extra_data_size())));
+}
+
 void AudioDecoderConfig::CopyFrom(const AudioDecoderConfig& audio_config) {
   Initialize(audio_config.codec(),
              audio_config.bits_per_channel(),
              audio_config.channel_layout(),
              audio_config.samples_per_second(),
              audio_config.extra_data(),
              audio_config.extra_data_size(),
              false);
 }
 
@@ skipping 15 matching lines @@
 
 uint8* AudioDecoderConfig::extra_data() const {
   return extra_data_.get();
 }
 
 size_t AudioDecoderConfig::extra_data_size() const {
   return extra_data_size_;
 }
 
 }  // namespace media