Add config change handling to SourceBufferStream & ChunkDemuxer

media/base/video_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/video_decoder_config.h"
 
 #include <cmath>
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 131 matching lines @@
 
 bool VideoDecoderConfig::IsValidConfig() const {
   return codec_ != kUnknownVideoCodec &&
       frame_rate_denominator_ > 0 &&
       aspect_ratio_numerator_ > 0 &&
       aspect_ratio_denominator_ > 0 &&
       VideoFrame::IsValidConfig(
           format_, natural_size_.width(), natural_size_.height());
 }
 
+bool VideoDecoderConfig::Matches(const VideoDecoderConfig& config) const {
+  return ((codec() == config.codec()) &&
+          (format() == config.format()) &&
+          (profile() == config.profile()) &&
+          (coded_size() == config.coded_size()) &&
+          (visible_rect() == config.visible_rect()) &&
+          (natural_size() == config.natural_size()) &&
+          (extra_data_size() == config.extra_data_size()) &&
+          (!extra_data() || !memcmp(extra_data(), config.extra_data(),
+                                    extra_data_size())));
+}
+
 std::string VideoDecoderConfig::AsHumanReadableString() const {
   std::ostringstream s;
   s << "codec: " << codec()
     << " format: " << format()
     << " coded size: [" << coded_size().width()
     << "," << coded_size().height() << "]"
     << " visible rect: [" << visible_rect().x()
     << "," << visible_rect().y()
     << "," << visible_rect().width()
     << "," << visible_rect().height() << "]"
@@ skipping 48 matching lines @@
 
 uint8* VideoDecoderConfig::extra_data() const {
   return extra_data_.get();
 }
 
 size_t VideoDecoderConfig::extra_data_size() const {
   return extra_data_size_;
 }
 
 }  // namespace media