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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 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 CONTENT_RENDERER_MEDIA_MEDIA_RECORDER_HANDLER_H_ | 5 #ifndef CONTENT_RENDERER_MEDIA_MEDIA_RECORDER_HANDLER_H_ |
6 #define CONTENT_RENDERER_MEDIA_MEDIA_RECORDER_HANDLER_H_ | 6 #define CONTENT_RENDERER_MEDIA_MEDIA_RECORDER_HANDLER_H_ |
7 | 7 |
8 #include "base/compiler_specific.h" | 8 #include "base/compiler_specific.h" |
9 #include "base/macros.h" | 9 #include "base/macros.h" |
10 #include "base/memory/scoped_vector.h" | 10 #include "base/memory/scoped_vector.h" |
11 #include "base/memory/weak_ptr.h" | 11 #include "base/memory/weak_ptr.h" |
12 #include "base/strings/string_piece.h" | 12 #include "base/strings/string_piece.h" |
13 #include "base/threading/thread_checker.h" | 13 #include "base/threading/thread_checker.h" |
14 #include "content/common/content_export.h" | 14 #include "content/common/content_export.h" |
| 15 #include "content/renderer/media/media_stream.h" |
15 #include "third_party/WebKit/public/platform/WebMediaRecorderHandler.h" | 16 #include "third_party/WebKit/public/platform/WebMediaRecorderHandler.h" |
16 #include "third_party/WebKit/public/platform/WebMediaStream.h" | 17 #include "third_party/WebKit/public/platform/WebMediaStream.h" |
17 | 18 |
18 namespace blink { | 19 namespace blink { |
19 class WebMediaRecorderHandlerClient; | 20 class WebMediaRecorderHandlerClient; |
20 class WebString; | 21 class WebString; |
21 } // namespace blink | 22 } // namespace blink |
22 | 23 |
23 namespace media { | 24 namespace media { |
24 class AudioBus; | 25 class AudioBus; |
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35 // MediaRecorderHandler orchestrates the creation, lifetime management and | 36 // MediaRecorderHandler orchestrates the creation, lifetime management and |
36 // mapping between: | 37 // mapping between: |
37 // - MediaStreamTrack(s) providing data, | 38 // - MediaStreamTrack(s) providing data, |
38 // - {Audio,Video}TrackRecorders encoding that data, | 39 // - {Audio,Video}TrackRecorders encoding that data, |
39 // - a WebmMuxer class multiplexing encoded data into a WebM container, and | 40 // - a WebmMuxer class multiplexing encoded data into a WebM container, and |
40 // - a single recorder client receiving this contained data. | 41 // - a single recorder client receiving this contained data. |
41 // All methods are called on the same thread as construction and destruction, | 42 // All methods are called on the same thread as construction and destruction, |
42 // i.e. the Main Render thread. (Note that a BindToCurrentLoop is used to | 43 // i.e. the Main Render thread. (Note that a BindToCurrentLoop is used to |
43 // guarantee this, since VideoTrackRecorder sends back frames on IO thread.) | 44 // guarantee this, since VideoTrackRecorder sends back frames on IO thread.) |
44 class CONTENT_EXPORT MediaRecorderHandler final | 45 class CONTENT_EXPORT MediaRecorderHandler final |
45 : public NON_EXPORTED_BASE(blink::WebMediaRecorderHandler) { | 46 : public NON_EXPORTED_BASE(blink::WebMediaRecorderHandler), |
| 47 public NON_EXPORTED_BASE(MediaStreamObserver) { |
46 public: | 48 public: |
47 MediaRecorderHandler(); | 49 MediaRecorderHandler(); |
48 ~MediaRecorderHandler() override; | 50 ~MediaRecorderHandler() override; |
49 | 51 |
50 // blink::WebMediaRecorderHandler. | 52 // blink::WebMediaRecorderHandler. |
51 bool canSupportMimeType(const blink::WebString& web_type, | 53 bool canSupportMimeType(const blink::WebString& web_type, |
52 const blink::WebString& web_codecs) override; | 54 const blink::WebString& web_codecs) override; |
53 bool initialize(blink::WebMediaRecorderHandlerClient* client, | 55 bool initialize(blink::WebMediaRecorderHandlerClient* client, |
54 const blink::WebMediaStream& media_stream, | 56 const blink::WebMediaStream& web_media_stream, |
55 const blink::WebString& type, | 57 const blink::WebString& type, |
56 const blink::WebString& codecs) override; | 58 const blink::WebString& codecs) override; |
57 bool start() override; | 59 bool start() override; |
58 bool start(int timeslice) override; | 60 bool start(int timeslice) override; |
59 void stop() override; | 61 void stop() override; |
60 void pause() override; | 62 void pause() override; |
61 void resume() override; | 63 void resume() override; |
62 | 64 |
| 65 // MediaStreamObserver implementation. On MS modification, we stop recording |
| 66 // and signal this illegal condition to |client_|. |
| 67 void TrackAdded(const blink::WebMediaStreamTrack& track) override; |
| 68 void TrackRemoved(const blink::WebMediaStreamTrack& track) override; |
| 69 |
63 private: | 70 private: |
64 friend class MediaRecorderHandlerTest; | 71 friend class MediaRecorderHandlerTest; |
65 | 72 |
66 void OnEncodedVideo(const scoped_refptr<media::VideoFrame>& video_frame, | 73 void OnEncodedVideo(const scoped_refptr<media::VideoFrame>& video_frame, |
67 scoped_ptr<std::string> encoded_data, | 74 scoped_ptr<std::string> encoded_data, |
68 base::TimeTicks timestamp, | 75 base::TimeTicks timestamp, |
69 bool is_key_frame); | 76 bool is_key_frame); |
70 void OnEncodedAudio(const media::AudioParameters& params, | 77 void OnEncodedAudio(const media::AudioParameters& params, |
71 scoped_ptr<std::string> encoded_data, | 78 scoped_ptr<std::string> encoded_data, |
72 base::TimeTicks timestamp); | 79 base::TimeTicks timestamp); |
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84 // Force using VP9 for video encoding, otherwise VP8 will be used by default. | 91 // Force using VP9 for video encoding, otherwise VP8 will be used by default. |
85 bool use_vp9_; | 92 bool use_vp9_; |
86 | 93 |
87 // |client_| has no notion of time, thus may configure us via start(timeslice) | 94 // |client_| has no notion of time, thus may configure us via start(timeslice) |
88 // to notify it after a certain |timeslice_| has passed. We use a moving | 95 // to notify it after a certain |timeslice_| has passed. We use a moving |
89 // |slice_origin_timestamp_| to track those time chunks. | 96 // |slice_origin_timestamp_| to track those time chunks. |
90 base::TimeDelta timeslice_; | 97 base::TimeDelta timeslice_; |
91 base::TimeTicks slice_origin_timestamp_; | 98 base::TimeTicks slice_origin_timestamp_; |
92 | 99 |
93 bool recording_; | 100 bool recording_; |
94 blink::WebMediaStream media_stream_; // The MediaStream being recorded. | 101 blink::WebMediaStream web_media_stream_; // WebMediaStream being recorded. |
95 | 102 |
96 // |client_| is a weak pointer, and is valid for the lifetime of this object. | 103 // |client_| is a weak pointer, and is valid for the lifetime of this object. |
97 blink::WebMediaRecorderHandlerClient* client_; | 104 blink::WebMediaRecorderHandlerClient* client_; |
98 | 105 |
99 ScopedVector<VideoTrackRecorder> video_recorders_; | 106 ScopedVector<VideoTrackRecorder> video_recorders_; |
100 ScopedVector<AudioTrackRecorder> audio_recorders_; | 107 ScopedVector<AudioTrackRecorder> audio_recorders_; |
101 | 108 |
102 // Worker class doing the actual Webm Muxing work. | 109 // Worker class doing the actual Webm Muxing work. |
103 scoped_ptr<media::WebmMuxer> webm_muxer_; | 110 scoped_ptr<media::WebmMuxer> webm_muxer_; |
104 | 111 |
105 base::WeakPtrFactory<MediaRecorderHandler> weak_factory_; | 112 base::WeakPtrFactory<MediaRecorderHandler> weak_factory_; |
106 | 113 |
107 DISALLOW_COPY_AND_ASSIGN(MediaRecorderHandler); | 114 DISALLOW_COPY_AND_ASSIGN(MediaRecorderHandler); |
108 }; | 115 }; |
109 | 116 |
110 } // namespace content | 117 } // namespace content |
111 #endif // CONTENT_RENDERER_MEDIA_MEDIA_RECORDER_HANDLER_H_ | 118 #endif // CONTENT_RENDERER_MEDIA_MEDIA_RECORDER_HANDLER_H_ |
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