Use cached Key frames to avoid browser seek

media/base/android/video_decoder_job.h

 // 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.
 
 #ifndef MEDIA_BASE_ANDROID_VIDEO_DECODER_JOB_H_
 #define MEDIA_BASE_ANDROID_VIDEO_DECODER_JOB_H_
 
 #include <jni.h>
 
 #include "media/base/android/media_decoder_job.h"
@@ skipping 15 matching lines @@
       const base::Closure& request_resources_cb,
       const base::Closure& on_demuxer_config_changed_cb);
   virtual ~VideoDecoderJob();
 
   // Passes a java surface object to the codec. Returns true if the surface
   // can be used by the decoder, or false otherwise.
   bool SetVideoSurface(gfx::ScopedJavaSurface surface);
 
   // MediaDecoderJob implementation.
   virtual bool HasStream() const override;
-  virtual void Flush() override;
   virtual void ReleaseDecoderResources() override;
   virtual void SetDemuxerConfigs(const DemuxerConfigs& configs) override;
 
-  bool next_video_data_is_iframe() {
-    return next_video_data_is_iframe_;
-  }
-
   int output_width() const { return output_width_; }
   int output_height() const { return output_height_; }
 
  private:
   // MediaDecoderJob implementation.
   virtual void ReleaseOutputBuffer(
       int output_buffer_index,
       size_t size,
       bool render_output,
       base::TimeDelta current_presentation_timestamp,
       const ReleaseOutputCompletionCallback& callback) override;
   virtual bool ComputeTimeToRender() const override;
   virtual bool IsCodecReconfigureNeeded(
       const DemuxerConfigs& configs) const override;
   virtual bool AreDemuxerConfigsChanged(
       const DemuxerConfigs& configs) const override;
-  virtual bool CreateMediaCodecBridgeInternal() override;
-  virtual void CurrentDataConsumed(bool is_config_change) override;
+  virtual MediaDecoderJobStatus CreateMediaCodecBridgeInternal() override;
   virtual bool UpdateOutputFormat() override;
 
   // Returns true if a protected surface is required for video playback.
   bool IsProtectedSurfaceRequired();
 
   // Video configs from the demuxer.
   VideoCodec video_codec_;
   int config_width_;
   int config_height_;
 
   // Video output format.
   int output_width_;
   int output_height_;
 
   // The surface object currently owned by the player.
   gfx::ScopedJavaSurface surface_;
 
   // Callbacks to inform the caller about decoder resources change.
   base::Closure request_resources_cb_;
   base::Closure release_resources_cb_;
 
-  // Track whether the next access unit is an I-frame. The first access
-  // unit after Flush() and CurrentDataConsumed(true) is guaranteed to be an
-  // I-frame.
-  bool next_video_data_is_iframe_;
-
   DISALLOW_COPY_AND_ASSIGN(VideoDecoderJob);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_ANDROID_VIDEO_DECODER_JOB_H_