media/base/android/video_decoder_job.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_BASE_ANDROID_VIDEO_DECODER_JOB_H_
   6 #define MEDIA_BASE_ANDROID_VIDEO_DECODER_JOB_H_
   7
   8 #include <jni.h>
   9
  10 #include "media/base/android/media_decoder_job.h"
  11
  12 namespace media {
  13
  14 class VideoCodecBridge;
  15
  16 // Class for managing video decoding jobs.
  17 class VideoDecoderJob : public MediaDecoderJob {
  18  public:
  19   // Create a new VideoDecoderJob instance.
  20   // |request_data_cb| - Callback used to request more data for the decoder.
  21   // |request_resources_cb| - Callback used to request resources.
  22   // |on_demuxer_config_changed_cb| - Callback used to inform the caller that
  23   // demuxer config has changed.
  24   VideoDecoderJob(
  25       const base::Closure& request_data_cb,
  26       const base::Closure& request_resources_cb,
  27       const base::Closure& on_demuxer_config_changed_cb);
  28   virtual ~VideoDecoderJob();
  29
  30   // Passes a java surface object to the codec. Returns true if the surface
  31   // can be used by the decoder, or false otherwise.
  32   bool SetVideoSurface(gfx::ScopedJavaSurface surface);
  33
  34   // MediaDecoderJob implementation.
  35   virtual bool HasStream() const override;
  36   virtual void Flush() override;
  37   virtual void ReleaseDecoderResources() override;
  38   virtual void SetDemuxerConfigs(const DemuxerConfigs& configs) override;
  39
  40   bool next_video_data_is_iframe() {
  41     return next_video_data_is_iframe_;
  42   }
  43
  44   int output_width() const { return output_width_; }
  45   int output_height() const { return output_height_; }
  46
  47  private:
  48   // MediaDecoderJob implementation.
  49   virtual void ReleaseOutputBuffer(
  50       int output_buffer_index,
  51       size_t size,
  52       bool render_output,
  53       base::TimeDelta current_presentation_timestamp,
  54       const ReleaseOutputCompletionCallback& callback) override;
  55   virtual bool ComputeTimeToRender() const override;
  56   virtual bool IsCodecReconfigureNeeded(
  57       const DemuxerConfigs& configs) const override;
  58   virtual bool AreDemuxerConfigsChanged(
  59       const DemuxerConfigs& configs) const override;
  60   virtual bool CreateMediaCodecBridgeInternal() override;
  61   virtual void CurrentDataConsumed(bool is_config_change) override;
  62   virtual bool UpdateOutputFormat() override;
  63
  64   // Returns true if a protected surface is required for video playback.
  65   bool IsProtectedSurfaceRequired();
  66
  67   // Video configs from the demuxer.
  68   VideoCodec video_codec_;
  69   int config_width_;
  70   int config_height_;
  71
  72   // Video output format.
  73   int output_width_;
  74   int output_height_;
  75
  76   // The surface object currently owned by the player.
  77   gfx::ScopedJavaSurface surface_;
  78
  79   // Callbacks to inform the caller about decoder resources change.
  80   base::Closure request_resources_cb_;
  81   base::Closure release_resources_cb_;
  82
  83   // Track whether the next access unit is an I-frame. The first access
  84   // unit after Flush() and CurrentDataConsumed(true) is guaranteed to be an
  85   // I-frame.
  86   bool next_video_data_is_iframe_;
  87
  88   DISALLOW_COPY_AND_ASSIGN(VideoDecoderJob);
  89 };
  90
  91 }  // namespace media
  92
  93 #endif  // MEDIA_BASE_ANDROID_VIDEO_DECODER_JOB_H_