| OLD | NEW |
| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef MEDIA_FILTERS_VIDEO_RENDERER_BASE_H_ | 5 #ifndef MEDIA_FILTERS_VIDEO_RENDERER_BASE_H_ |
| 6 #define MEDIA_FILTERS_VIDEO_RENDERER_BASE_H_ | 6 #define MEDIA_FILTERS_VIDEO_RENDERER_BASE_H_ |
| 7 | 7 |
| 8 #include <deque> | 8 #include <deque> |
| 9 | 9 |
| 10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
| (...skipping 10 matching lines...) Expand all Loading... |
| 21 // VideoRendererBase creates its own thread for the sole purpose of timing frame | 21 // VideoRendererBase creates its own thread for the sole purpose of timing frame |
| 22 // presentation. It handles reading from the decoder and stores the results in | 22 // presentation. It handles reading from the decoder and stores the results in |
| 23 // a queue of decoded frames and executing a callback when a frame is ready for | 23 // a queue of decoded frames and executing a callback when a frame is ready for |
| 24 // rendering. | 24 // rendering. |
| 25 class MEDIA_EXPORT VideoRendererBase | 25 class MEDIA_EXPORT VideoRendererBase |
| 26 : public VideoRenderer, | 26 : public VideoRenderer, |
| 27 public base::PlatformThread::Delegate { | 27 public base::PlatformThread::Delegate { |
| 28 public: | 28 public: |
| 29 typedef base::Callback<void(bool)> SetOpaqueCB; | 29 typedef base::Callback<void(bool)> SetOpaqueCB; |
| 30 | 30 |
| 31 // Maximum duration of the last frame. |
| 32 static base::TimeDelta kMaxLastFrameDuration(); |
| 33 |
| 31 // |paint_cb| is executed on the video frame timing thread whenever a new | 34 // |paint_cb| is executed on the video frame timing thread whenever a new |
| 32 // frame is available for painting via GetCurrentFrame(). | 35 // frame is available for painting via GetCurrentFrame(). |
| 33 // | 36 // |
| 34 // |set_opaque_cb| is executed when the renderer is initialized to inform | 37 // |set_opaque_cb| is executed when the renderer is initialized to inform |
| 35 // the player whether the decoder's output will be opaque or not. | 38 // the player whether the decoder's output will be opaque or not. |
| 36 // | 39 // |
| 37 // Implementors should avoid doing any sort of heavy work in this method and | 40 // Implementors should avoid doing any sort of heavy work in this method and |
| 38 // instead post a task to a common/worker thread to handle rendering. Slowing | 41 // instead post a task to a common/worker thread to handle rendering. Slowing |
| 39 // down the video thread may result in losing synchronization with audio. | 42 // down the video thread may result in losing synchronization with audio. |
| 40 // | 43 // |
| 41 // Setting |drop_frames_| to true causes the renderer to drop expired frames. | 44 // Setting |drop_frames_| to true causes the renderer to drop expired frames. |
| 42 // | 45 // |
| 43 // TODO(scherkus): pass the VideoFrame* to this callback and remove | 46 // TODO(scherkus): pass the VideoFrame* to this callback and remove |
| 44 // Get/PutCurrentFrame() http://crbug.com/108435 | 47 // Get/PutCurrentFrame() http://crbug.com/108435 |
| 45 VideoRendererBase(const base::Closure& paint_cb, | 48 VideoRendererBase(const base::Closure& paint_cb, |
| 46 const SetOpaqueCB& set_opaque_cb, | 49 const SetOpaqueCB& set_opaque_cb, |
| 47 bool drop_frames); | 50 bool drop_frames); |
| 48 | 51 |
| 49 // VideoRenderer implementation. | 52 // VideoRenderer implementation. |
| 50 virtual void Initialize(const scoped_refptr<VideoDecoder>& decoder, | 53 virtual void Initialize(const scoped_refptr<VideoDecoder>& decoder, |
| 51 const PipelineStatusCB& init_cb, | 54 const PipelineStatusCB& init_cb, |
| 52 const StatisticsCB& statistics_cb, | 55 const StatisticsCB& statistics_cb, |
| 53 const TimeCB& time_cb, | 56 const TimeCB& max_time_cb, |
| 54 const NaturalSizeChangedCB& size_changed_cb, | 57 const NaturalSizeChangedCB& size_changed_cb, |
| 55 const base::Closure& ended_cb, | 58 const base::Closure& ended_cb, |
| 56 const PipelineStatusCB& error_cb, | 59 const PipelineStatusCB& error_cb, |
| 57 const TimeDeltaCB& get_time_cb, | 60 const TimeDeltaCB& get_time_cb, |
| 58 const TimeDeltaCB& get_duration_cb) OVERRIDE; | 61 const TimeDeltaCB& get_duration_cb) OVERRIDE; |
| 59 virtual void Play(const base::Closure& callback) OVERRIDE; | 62 virtual void Play(const base::Closure& callback) OVERRIDE; |
| 60 virtual void Pause(const base::Closure& callback) OVERRIDE; | 63 virtual void Pause(const base::Closure& callback) OVERRIDE; |
| 61 virtual void Flush(const base::Closure& callback) OVERRIDE; | 64 virtual void Flush(const base::Closure& callback) OVERRIDE; |
| 62 virtual void Preroll(base::TimeDelta time, | 65 virtual void Preroll(base::TimeDelta time, |
| 63 const PipelineStatusCB& cb) OVERRIDE; | 66 const PipelineStatusCB& cb) OVERRIDE; |
| (...skipping 138 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 202 bool drop_frames_; | 205 bool drop_frames_; |
| 203 | 206 |
| 204 float playback_rate_; | 207 float playback_rate_; |
| 205 | 208 |
| 206 // Playback operation callbacks. | 209 // Playback operation callbacks. |
| 207 base::Closure flush_cb_; | 210 base::Closure flush_cb_; |
| 208 PipelineStatusCB preroll_cb_; | 211 PipelineStatusCB preroll_cb_; |
| 209 | 212 |
| 210 // Event callbacks. | 213 // Event callbacks. |
| 211 StatisticsCB statistics_cb_; | 214 StatisticsCB statistics_cb_; |
| 212 TimeCB time_cb_; | 215 TimeCB max_time_cb_; |
| 213 NaturalSizeChangedCB size_changed_cb_; | 216 NaturalSizeChangedCB size_changed_cb_; |
| 214 base::Closure ended_cb_; | 217 base::Closure ended_cb_; |
| 215 PipelineStatusCB error_cb_; | 218 PipelineStatusCB error_cb_; |
| 216 TimeDeltaCB get_time_cb_; | 219 TimeDeltaCB get_time_cb_; |
| 217 TimeDeltaCB get_duration_cb_; | 220 TimeDeltaCB get_duration_cb_; |
| 218 | 221 |
| 219 base::TimeDelta preroll_timestamp_; | 222 base::TimeDelta preroll_timestamp_; |
| 220 | 223 |
| 221 // Delayed frame used during kPrerolling to determine whether | 224 // Delayed frame used during kPrerolling to determine whether |
| 222 // |preroll_timestamp_| is between this frame and the next one. | 225 // |preroll_timestamp_| is between this frame and the next one. |
| 223 scoped_refptr<VideoFrame> prerolling_delayed_frame_; | 226 scoped_refptr<VideoFrame> prerolling_delayed_frame_; |
| 224 | 227 |
| 225 // Embedder callback for notifying a new frame is available for painting. | 228 // Embedder callback for notifying a new frame is available for painting. |
| 226 base::Closure paint_cb_; | 229 base::Closure paint_cb_; |
| 227 | 230 |
| 228 // Callback to execute to inform the player if the video decoder's output is | 231 // Callback to execute to inform the player if the video decoder's output is |
| 229 // opaque. | 232 // opaque. |
| 230 SetOpaqueCB set_opaque_cb_; | 233 SetOpaqueCB set_opaque_cb_; |
| 231 | 234 |
| 232 // The last natural size |size_changed_cb_| was called with. | 235 // The last natural size |size_changed_cb_| was called with. |
| 233 gfx::Size last_natural_size_; | 236 gfx::Size last_natural_size_; |
| 234 | 237 |
| 235 DISALLOW_COPY_AND_ASSIGN(VideoRendererBase); | 238 DISALLOW_COPY_AND_ASSIGN(VideoRendererBase); |
| 236 }; | 239 }; |
| 237 | 240 |
| 238 } // namespace media | 241 } // namespace media |
| 239 | 242 |
| 240 #endif // MEDIA_FILTERS_VIDEO_RENDERER_BASE_H_ | 243 #endif // MEDIA_FILTERS_VIDEO_RENDERER_BASE_H_ |
| OLD | NEW |