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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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_BASE_RENDERER_H_ | 5 #ifndef MEDIA_BASE_RENDERER_H_ |
6 #define MEDIA_BASE_RENDERER_H_ | 6 #define MEDIA_BASE_RENDERER_H_ |
7 | 7 |
8 #include "base/callback.h" | 8 #include "base/callback.h" |
9 #include "base/time/time.h" | 9 #include "base/time/time.h" |
10 #include "media/base/buffering_state.h" | 10 #include "media/base/buffering_state.h" |
11 #include "media/base/media_export.h" | 11 #include "media/base/media_export.h" |
12 #include "media/base/pipeline_status.h" | 12 #include "media/base/pipeline_status.h" |
13 | 13 |
14 namespace media { | 14 namespace media { |
15 | 15 |
16 class MediaKeys; | 16 class MediaKeys; |
17 | 17 |
18 class MEDIA_EXPORT Renderer { | 18 class MEDIA_EXPORT Renderer { |
19 public: | 19 public: |
20 typedef base::Callback<base::TimeDelta()> TimeDeltaCB; | 20 typedef base::Callback<base::TimeDelta()> TimeDeltaCB; |
21 | 21 |
22 Renderer(); | 22 Renderer(); |
23 | 23 |
24 // Stops rendering and fires any pending callbacks. | 24 // Stops rendering and fires any pending callbacks. |
25 virtual ~Renderer(); | 25 virtual ~Renderer(); |
26 | 26 |
27 // Initializes the Renderer, executing |init_cb| upon completion. | 27 // Initializes the Renderer, executing |init_cb| upon completion. |
28 // If initialization failed, fires |error_cb| before |init_cb|. | 28 // If initialization failed, fires |error_cb| before |init_cb|. |
29 // TODO(xhwang): Provide a set of DemuxerStreams in Initialize(). | |
30 // | 29 // |
31 // Permanent callbacks: | 30 // Permanent callbacks: |
32 // - |statistics_cb|: Executed periodically with rendering statistics. | 31 // - |statistics_cb|: Executed periodically with rendering statistics. |
33 // - |time_cb|: Executed whenever time has advanced through rendering. | 32 // - |time_cb|: Executed whenever time has advanced through rendering. |
34 // - |ended_cb|: Executed when rendering has reached the end of stream. | 33 // - |ended_cb|: Executed when rendering has reached the end of stream. |
35 // - |error_cb|: Executed if any error was encountered during rendering. | 34 // - |error_cb|: Executed if any error was encountered during rendering. |
36 virtual void Initialize(const base::Closure& init_cb, | 35 virtual void Initialize(const base::Closure& init_cb, |
37 const StatisticsCB& statistics_cb, | 36 const StatisticsCB& statistics_cb, |
38 const base::Closure& ended_cb, | 37 const base::Closure& ended_cb, |
39 const PipelineStatusCB& error_cb, | 38 const PipelineStatusCB& error_cb, |
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65 // Associates the |cdm| with this Renderer. | 64 // Associates the |cdm| with this Renderer. |
66 virtual void SetCdm(MediaKeys* cdm) = 0; | 65 virtual void SetCdm(MediaKeys* cdm) = 0; |
67 | 66 |
68 private: | 67 private: |
69 DISALLOW_COPY_AND_ASSIGN(Renderer); | 68 DISALLOW_COPY_AND_ASSIGN(Renderer); |
70 }; | 69 }; |
71 | 70 |
72 } // namespace media | 71 } // namespace media |
73 | 72 |
74 #endif // MEDIA_BASE_RENDERER_H_ | 73 #endif // MEDIA_BASE_RENDERER_H_ |
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