media/base/android/media_codec_video_decoder.h

   1 // Copyright 2015 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_MEDIA_CODEC_VIDEO_DECODER_H_
   6 #define MEDIA_BASE_ANDROID_MEDIA_CODEC_VIDEO_DECODER_H_
   7
   8 #include <set>
   9 #include "media/base/android/media_codec_decoder.h"
  10 #include "ui/gfx/geometry/size.h"
  11 #include "ui/gl/android/scoped_java_surface.h"
  12
  13 namespace media {
  14
  15 // Video decoder for MediaCodecPlayer
  16 class MediaCodecVideoDecoder : public MediaCodecDecoder {
  17  public:
  18   // Typedefs for the notification callbacks
  19   typedef base::Callback<void(const gfx::Size& video_size)>
  20       VideoSizeChangedCallback;
  21
  22   // For parameters see media_codec_decoder.h
  23   // update_current_time_cb: callback that reports current playback time.
  24   //                         Called for released output frame,
  25   // video_size_changed_cb: reports the new video size,
  26   // codec_created_cb: reports that video codec has been created. A controller
  27   //                   class might use it to release more resources so that this
  28   //                   decoder can use them.
  29   MediaCodecVideoDecoder(
  30       const scoped_refptr<base::SingleThreadTaskRunner>& media_runner,
  31       const base::Closure& request_data_cb,
  32       const base::Closure& starvation_cb,
  33       const base::Closure& drained_requested_cb,
  34       const base::Closure& stop_done_cb,
  35       const base::Closure& error_cb,
  36       const SetTimeCallback& update_current_time_cb,
  37       const VideoSizeChangedCallback& video_size_changed_cb,
  38       const base::Closure& codec_created_cb);
  39   ~MediaCodecVideoDecoder() override;
  40
  41   const char* class_name() const override;
  42
  43   bool HasStream() const override;
  44   void SetDemuxerConfigs(const DemuxerConfigs& configs) override;
  45   void ReleaseDecoderResources() override;
  46   void ReleaseMediaCodec() override;
  47
  48   // Stores the video surface to use with upcoming Configure()
  49   void SetVideoSurface(gfx::ScopedJavaSurface surface);
  50
  51   // Returns true if there is a video surface to use.
  52   bool HasVideoSurface() const;
  53
  54  protected:
  55   bool IsCodecReconfigureNeeded(const DemuxerConfigs& next) const override;
  56   ConfigStatus ConfigureInternal() override;
  57   void AssociateCurrentTimeWithPTS(base::TimeDelta pts) override;
  58   void DissociatePTSFromTime() override;
  59   void OnOutputFormatChanged() override;
  60   void Render(int buffer_index,
  61               size_t offset,
  62               size_t size,
  63               RenderMode render_mode,
  64               base::TimeDelta pts,
  65               bool eos_encountered) override;
  66
  67   int NumDelayedRenderTasks() const override;
  68   void ReleaseDelayedBuffers() override;
  69
  70 #ifndef NDEBUG
  71   void VerifyUnitIsKeyFrame(const AccessUnit* unit) const override;
  72 #endif
  73
  74  private:
  75   // A helper method that releases output buffers and does
  76   // post-release checks. Might be called by Render() or posted
  77   // for later execution.
  78   void ReleaseOutputBuffer(int buffer_index,
  79                            base::TimeDelta pts,
  80                            bool render,
  81                            bool update_time,
  82                            bool eos_encountered);
  83
  84   // Data.
  85
  86   // Configuration received from demuxer
  87   DemuxerConfigs configs_;
  88
  89   // Video surface that we render to.
  90   gfx::ScopedJavaSurface surface_;
  91
  92   // Reports current playback time to the callee.
  93   SetTimeCallback update_current_time_cb_;
  94
  95   // Informs the callee that video size is changed.
  96   VideoSizeChangedCallback video_size_changed_cb_;
  97
  98   // Informs the callee that the MediaCodec is created.
  99   base::Closure codec_created_cb_;
 100
 101   // Current video size to be sent with |video_size_changed_cb_|.
 102   gfx::Size video_size_;
 103
 104   // Indices of output buffers that are posted for rendering.
 105   std::set<int> delayed_buffers_;
 106
 107   // Associate presentation timestamps with time.
 108   base::TimeTicks start_time_ticks_;
 109   base::TimeDelta start_pts_;
 110
 111   // Mantain the last seen PTS for stand-alone EOS.
 112   base::TimeDelta last_seen_pts_;
 113
 114   DISALLOW_COPY_AND_ASSIGN(MediaCodecVideoDecoder);
 115 };
 116
 117 }  // namespace media
 118
 119 #endif  // MEDIA_BASE_ANDROID_MEDIA_CODEC_VIDEO_DECODER_H_