Use cached Key frames to avoid browser seek

media/base/android/audio_decoder_job.cc

 // Copyright 2013 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/android/audio_decoder_job.h"
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/threading/thread.h"
 #include "media/base/android/media_codec_bridge.h"
@@ skipping 117 matching lines @@
   return audio_codec_ != configs.audio_codec ||
      num_channels_ != configs.audio_channels ||
      config_sampling_rate_ != configs.audio_sampling_rate ||
      is_content_encrypted() != configs.is_audio_encrypted ||
      audio_extra_data_.size() != configs.audio_extra_data.size() ||
      !std::equal(audio_extra_data_.begin(),
                  audio_extra_data_.end(),
                  configs.audio_extra_data.begin());
 }
 
-bool AudioDecoderJob::CreateMediaCodecBridgeInternal() {
+MediaDecoderJob::MediaDecoderJobStatus
+    AudioDecoderJob::CreateMediaCodecBridgeInternal() {
   media_codec_bridge_.reset(AudioCodecBridge::Create(audio_codec_));
   if (!media_codec_bridge_)
-    return false;
+    return STATUS_FAILURE;
 
   if (!(static_cast<AudioCodecBridge*>(media_codec_bridge_.get()))->Start(
       audio_codec_, config_sampling_rate_, num_channels_, &audio_extra_data_[0],
       audio_extra_data_.size(), true, GetMediaCrypto().obj())) {
     media_codec_bridge_.reset();
-    return false;
+    return STATUS_FAILURE;
   }
 
   SetVolumeInternal();
 
   // Reset values used to track codec bridge output
   frame_count_ = 0;
   ResetTimestampHelper();
 
-  return true;
+  return STATUS_SUCCESS;
 }
 
 void AudioDecoderJob::SetVolumeInternal() {
   if (media_codec_bridge_) {
     static_cast<AudioCodecBridge*>(media_codec_bridge_.get())->SetVolume(
         volume_);
   }
 }
 
 void AudioDecoderJob::OnOutputFormatChanged() {
   DCHECK(media_codec_bridge_);
 
   int old_sampling_rate = output_sampling_rate_;
   output_sampling_rate_ = media_codec_bridge_->GetOutputSamplingRate();
   if (output_sampling_rate_ != old_sampling_rate)
     ResetTimestampHelper();
 }
 
 }  // namespace media