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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 CONTENT_RENDERER_MEDIA_MEDIA_RECORDER_HANDLER_H_ | |
6 #define CONTENT_RENDERER_MEDIA_MEDIA_RECORDER_HANDLER_H_ | |
7 | |
8 #include "base/memory/scoped_vector.h" | |
9 #include "base/memory/weak_ptr.h" | |
10 #include "base/strings/string_piece.h" | |
11 #include "base/threading/thread_checker.h" | |
12 #include "content/common/content_export.h" | |
13 #include "third_party/WebKit/public/platform/WebMediaStream.h" | |
14 #include "third_party/WebKit/public/platform/WebString.h" | |
15 | |
16 namespace media { | |
17 class VideoFrame; | |
18 class WebmMuxer; | |
19 } // namespace media | |
20 | |
21 namespace content { | |
22 | |
23 class VideoTrackRecorder; | |
24 | |
25 // TODO(mcasas): This class should derive from WebMediaRecorderHandler as | |
26 // defined in [1] whenever Blink http://crrev.com/1255873002 is landed, and use | |
27 // a WebMediaRecorderHandlerClient instead of MediaRecorderHandlerClient. | |
28 // [1] http://w3c.github.io/mediacapture-record/MediaRecorder.html#MediaRecorder API | |
29 class MediaRecorderHandlerClient { | |
30 public: | |
31 virtual ~MediaRecorderHandlerClient() = default; | |
32 | |
33 virtual void writeData(const char* data, size_t length, bool lastInslice) = 0; | |
miu
2015/09/02 21:28:13
Should the name of the 3rd arg be lastInSlice (cap
mcasas
2015/09/04 02:16:30
Done.
| |
34 }; | |
35 | |
36 // MediaRecorderHandler orchestrates the creation, lifetime mgmt and mapping | |
37 // between: | |
38 // - MediaStreamTrack(s) providing data, | |
39 // - {Audio,Video}TrackRecorders encoding that data, | |
40 // - a WebmMuxer class multiplexing encoded data into a WebM container, and | |
41 // - a single recorder |client_| receiving this contained data. | |
42 // All methods are called on the same thread as construction and destruction, | |
43 // i.e. the Main Render thread. | |
44 // TODO(mcasas): Implement audio recording. | |
45 class CONTENT_EXPORT MediaRecorderHandler final { | |
46 public: | |
47 MediaRecorderHandler(); | |
48 ~MediaRecorderHandler(); | |
49 | |
50 // See above, these methods should override blink::WebMediaRecorderHandler. | |
51 bool canSupportMimeType(const blink::WebString& mimeType); | |
52 bool initialize(MediaRecorderHandlerClient* client, | |
53 const blink::WebMediaStream& media_stream, | |
54 const blink::WebString& mimeType); | |
55 bool start(); | |
56 bool start(int timeslice); | |
57 void stop(); | |
58 void pause(); | |
59 void resume(); | |
60 | |
61 private: | |
62 friend class MediaRecorderHandlerTest; | |
63 | |
64 void WriteData(const base::StringPiece& data); | |
65 | |
66 void OnVideoFrameForTesting(const scoped_refptr<media::VideoFrame>& frame, | |
67 const base::TimeTicks& timestamp); | |
68 | |
69 // Bound to the main render thread. | |
70 base::ThreadChecker main_render_thread_checker_; | |
71 | |
72 bool recording_; | |
miu
2015/09/02 21:28:13
You don't need this boolean. You could replace it
mcasas
2015/09/04 02:16:30
Still needs to be |recording_| == false between p
miu
2015/09/04 21:48:52
Acknowledged.
| |
73 blink::WebMediaStream media_stream_; // The MediaStream being recorded. | |
74 | |
75 // |client_| is a weak pointer, and is valid for the lifetime of this object. | |
76 MediaRecorderHandlerClient* client_; | |
77 | |
78 ScopedVector<VideoTrackRecorder> video_recorders_; | |
79 | |
80 // Worker class doing the actual Webm Muxing work. | |
81 scoped_ptr<media::WebmMuxer> webm_muxer_; | |
82 | |
83 base::WeakPtrFactory<MediaRecorderHandler> weak_factory_; | |
84 | |
85 DISALLOW_COPY_AND_ASSIGN(MediaRecorderHandler); | |
86 }; | |
87 | |
88 } // namespace content | |
89 #endif // CONTENT_RENDERER_MEDIA_MEDIA_RECORDER_HANDLER_H_ | |
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