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1 /* | 1 /* |
2 * Copyright 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright 2012 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 // This file contains interfaces for MediaStream, MediaTrack and MediaSource. | 11 // This file contains interfaces for MediaStream, MediaTrack and MediaSource. |
12 // These interfaces are used for implementing MediaStream and MediaTrack as | 12 // These interfaces are used for implementing MediaStream and MediaTrack as |
13 // defined in http://dev.w3.org/2011/webrtc/editor/webrtc.html#stream-api. These | 13 // defined in http://dev.w3.org/2011/webrtc/editor/webrtc.html#stream-api. These |
14 // interfaces must be used only with PeerConnection. PeerConnectionManager | 14 // interfaces must be used only with PeerConnection. PeerConnectionManager |
15 // interface provides the factory methods to create MediaStream and MediaTracks. | 15 // interface provides the factory methods to create MediaStream and MediaTracks. |
16 | 16 |
17 #ifndef WEBRTC_API_MEDIASTREAMINTERFACE_H_ | 17 #ifndef WEBRTC_API_MEDIASTREAMINTERFACE_H_ |
18 #define WEBRTC_API_MEDIASTREAMINTERFACE_H_ | 18 #define WEBRTC_API_MEDIASTREAMINTERFACE_H_ |
19 | 19 |
20 #include <string> | 20 #include <string> |
21 #include <vector> | 21 #include <vector> |
22 | 22 |
23 #include "webrtc/base/basictypes.h" | 23 #include "webrtc/base/basictypes.h" |
24 #include "webrtc/base/refcount.h" | 24 #include "webrtc/base/refcount.h" |
25 #include "webrtc/base/scoped_ref_ptr.h" | 25 #include "webrtc/base/scoped_ref_ptr.h" |
26 #include "webrtc/base/optional.h" | 26 #include "webrtc/base/optional.h" |
27 #include "webrtc/media/base/mediachannel.h" | 27 #include "webrtc/media/base/mediachannel.h" |
28 #include "webrtc/media/base/videoframe.h" | |
29 #include "webrtc/media/base/videosinkinterface.h" | 28 #include "webrtc/media/base/videosinkinterface.h" |
30 #include "webrtc/media/base/videosourceinterface.h" | 29 #include "webrtc/media/base/videosourceinterface.h" |
| 30 #include "webrtc/video_frame.h" |
31 | 31 |
32 namespace webrtc { | 32 namespace webrtc { |
33 | 33 |
34 // Generic observer interface. | 34 // Generic observer interface. |
35 class ObserverInterface { | 35 class ObserverInterface { |
36 public: | 36 public: |
37 virtual void OnChanged() = 0; | 37 virtual void OnChanged() = 0; |
38 | 38 |
39 protected: | 39 protected: |
40 virtual ~ObserverInterface() {} | 40 virtual ~ObserverInterface() {} |
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91 virtual bool set_enabled(bool enable) = 0; | 91 virtual bool set_enabled(bool enable) = 0; |
92 | 92 |
93 protected: | 93 protected: |
94 virtual ~MediaStreamTrackInterface() {} | 94 virtual ~MediaStreamTrackInterface() {} |
95 }; | 95 }; |
96 | 96 |
97 // VideoTrackSourceInterface is a reference counted source used for VideoTracks. | 97 // VideoTrackSourceInterface is a reference counted source used for VideoTracks. |
98 // The same source can be used in multiple VideoTracks. | 98 // The same source can be used in multiple VideoTracks. |
99 class VideoTrackSourceInterface | 99 class VideoTrackSourceInterface |
100 : public MediaSourceInterface, | 100 : public MediaSourceInterface, |
101 public rtc::VideoSourceInterface<cricket::VideoFrame> { | 101 public rtc::VideoSourceInterface<VideoFrame> { |
102 public: | 102 public: |
103 struct Stats { | 103 struct Stats { |
104 // Original size of captured frame, before video adaptation. | 104 // Original size of captured frame, before video adaptation. |
105 int input_width; | 105 int input_width; |
106 int input_height; | 106 int input_height; |
107 }; | 107 }; |
108 | 108 |
109 // Indicates that parameters suitable for screencasts should be automatically | 109 // Indicates that parameters suitable for screencasts should be automatically |
110 // applied to RtpSenders. | 110 // applied to RtpSenders. |
111 // TODO(perkj): Remove these once all known applications have moved to | 111 // TODO(perkj): Remove these once all known applications have moved to |
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124 // source, or a source which has not seen its first frame yet. | 124 // source, or a source which has not seen its first frame yet. |
125 // Should avoid blocking. | 125 // Should avoid blocking. |
126 virtual bool GetStats(Stats* stats) = 0; | 126 virtual bool GetStats(Stats* stats) = 0; |
127 | 127 |
128 protected: | 128 protected: |
129 virtual ~VideoTrackSourceInterface() {} | 129 virtual ~VideoTrackSourceInterface() {} |
130 }; | 130 }; |
131 | 131 |
132 class VideoTrackInterface | 132 class VideoTrackInterface |
133 : public MediaStreamTrackInterface, | 133 : public MediaStreamTrackInterface, |
134 public rtc::VideoSourceInterface<cricket::VideoFrame> { | 134 public rtc::VideoSourceInterface<VideoFrame> { |
135 public: | 135 public: |
136 // Register a video sink for this track. | 136 // Register a video sink for this track. |
137 void AddOrUpdateSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink, | 137 void AddOrUpdateSink(rtc::VideoSinkInterface<VideoFrame>* sink, |
138 const rtc::VideoSinkWants& wants) override{}; | 138 const rtc::VideoSinkWants& wants) override{}; |
139 void RemoveSink( | 139 void RemoveSink(rtc::VideoSinkInterface<VideoFrame>* sink) override{}; |
140 rtc::VideoSinkInterface<cricket::VideoFrame>* sink) override{}; | |
141 | 140 |
142 virtual VideoTrackSourceInterface* GetSource() const = 0; | 141 virtual VideoTrackSourceInterface* GetSource() const = 0; |
143 | 142 |
144 protected: | 143 protected: |
145 virtual ~VideoTrackInterface() {} | 144 virtual ~VideoTrackInterface() {} |
146 }; | 145 }; |
147 | 146 |
148 // Interface for receiving audio data from a AudioTrack. | 147 // Interface for receiving audio data from a AudioTrack. |
149 class AudioTrackSinkInterface { | 148 class AudioTrackSinkInterface { |
150 public: | 149 public: |
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265 virtual bool RemoveTrack(AudioTrackInterface* track) = 0; | 264 virtual bool RemoveTrack(AudioTrackInterface* track) = 0; |
266 virtual bool RemoveTrack(VideoTrackInterface* track) = 0; | 265 virtual bool RemoveTrack(VideoTrackInterface* track) = 0; |
267 | 266 |
268 protected: | 267 protected: |
269 virtual ~MediaStreamInterface() {} | 268 virtual ~MediaStreamInterface() {} |
270 }; | 269 }; |
271 | 270 |
272 } // namespace webrtc | 271 } // namespace webrtc |
273 | 272 |
274 #endif // WEBRTC_API_MEDIASTREAMINTERFACE_H_ | 273 #endif // WEBRTC_API_MEDIASTREAMINTERFACE_H_ |
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