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1 /* | 1 /* |
2 * Copyright (c) 2010 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2010 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 |
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22 #include "webrtc/base/constructormagic.h" | 22 #include "webrtc/base/constructormagic.h" |
23 #include "webrtc/base/criticalsection.h" | 23 #include "webrtc/base/criticalsection.h" |
24 #include "webrtc/media/base/videosourceinterface.h" | 24 #include "webrtc/media/base/videosourceinterface.h" |
25 #include "webrtc/base/sigslot.h" | 25 #include "webrtc/base/sigslot.h" |
26 #include "webrtc/base/thread_checker.h" | 26 #include "webrtc/base/thread_checker.h" |
27 #include "webrtc/base/timestampaligner.h" | 27 #include "webrtc/base/timestampaligner.h" |
28 #include "webrtc/media/base/videoadapter.h" | 28 #include "webrtc/media/base/videoadapter.h" |
29 #include "webrtc/media/base/videobroadcaster.h" | 29 #include "webrtc/media/base/videobroadcaster.h" |
30 #include "webrtc/media/base/videocommon.h" | 30 #include "webrtc/media/base/videocommon.h" |
31 | 31 |
| 32 namespace webrtc { |
| 33 class VideoFrame; |
| 34 } |
32 | 35 |
33 namespace cricket { | 36 namespace cricket { |
34 | 37 |
35 // Current state of the capturer. | 38 // Current state of the capturer. |
36 enum CaptureState { | 39 enum CaptureState { |
37 CS_STOPPED, // The capturer has been stopped or hasn't started yet. | 40 CS_STOPPED, // The capturer has been stopped or hasn't started yet. |
38 CS_STARTING, // The capturer is in the process of starting. Note, it may | 41 CS_STARTING, // The capturer is in the process of starting. Note, it may |
39 // still fail to start. | 42 // still fail to start. |
40 CS_RUNNING, // The capturer has been started successfully and is now | 43 CS_RUNNING, // The capturer has been started successfully and is now |
41 // capturing. | 44 // capturing. |
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62 // Start() | 65 // Start() |
63 // GetCaptureFormat() optionally | 66 // GetCaptureFormat() optionally |
64 // Stop() | 67 // Stop() |
65 // | 68 // |
66 // Assumption: | 69 // Assumption: |
67 // The Start() and Stop() methods are called by a single thread (E.g., the | 70 // The Start() and Stop() methods are called by a single thread (E.g., the |
68 // media engine thread). Hence, the VideoCapture subclasses dont need to be | 71 // media engine thread). Hence, the VideoCapture subclasses dont need to be |
69 // thread safe. | 72 // thread safe. |
70 // | 73 // |
71 class VideoCapturer : public sigslot::has_slots<>, | 74 class VideoCapturer : public sigslot::has_slots<>, |
72 public rtc::VideoSourceInterface<cricket::VideoFrame> { | 75 public rtc::VideoSourceInterface<webrtc::VideoFrame> { |
73 public: | 76 public: |
74 VideoCapturer(); | 77 VideoCapturer(); |
75 | 78 |
76 virtual ~VideoCapturer() {} | 79 virtual ~VideoCapturer() {} |
77 | 80 |
78 // Gets the id of the underlying device, which is available after the capturer | 81 // Gets the id of the underlying device, which is available after the capturer |
79 // is initialized. Can be used to determine if two capturers reference the | 82 // is initialized. Can be used to determine if two capturers reference the |
80 // same device. | 83 // same device. |
81 const std::string& GetId() const { return id_; } | 84 const std::string& GetId() const { return id_; } |
82 | 85 |
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162 // and users must call video_adapter()->OnOutputFormatRequest() | 165 // and users must call video_adapter()->OnOutputFormatRequest() |
163 // to receive frames. | 166 // to receive frames. |
164 bool enable_video_adapter() const { return enable_video_adapter_; } | 167 bool enable_video_adapter() const { return enable_video_adapter_; } |
165 void set_enable_video_adapter(bool enable_video_adapter) { | 168 void set_enable_video_adapter(bool enable_video_adapter) { |
166 enable_video_adapter_ = enable_video_adapter; | 169 enable_video_adapter_ = enable_video_adapter; |
167 } | 170 } |
168 | 171 |
169 bool GetInputSize(int* width, int* height); | 172 bool GetInputSize(int* width, int* height); |
170 | 173 |
171 // Implements VideoSourceInterface | 174 // Implements VideoSourceInterface |
172 void AddOrUpdateSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink, | 175 void AddOrUpdateSink(rtc::VideoSinkInterface<webrtc::VideoFrame>* sink, |
173 const rtc::VideoSinkWants& wants) override; | 176 const rtc::VideoSinkWants& wants) override; |
174 void RemoveSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink) override; | 177 void RemoveSink(rtc::VideoSinkInterface<webrtc::VideoFrame>* sink) override; |
175 | 178 |
176 protected: | 179 protected: |
177 // OnSinkWantsChanged can be overridden to change the default behavior | 180 // OnSinkWantsChanged can be overridden to change the default behavior |
178 // when a sink changes its VideoSinkWants by calling AddOrUpdateSink. | 181 // when a sink changes its VideoSinkWants by calling AddOrUpdateSink. |
179 virtual void OnSinkWantsChanged(const rtc::VideoSinkWants& wants); | 182 virtual void OnSinkWantsChanged(const rtc::VideoSinkWants& wants); |
180 | 183 |
181 // Reports the appropriate frame size after adaptation. Returns true | 184 // Reports the appropriate frame size after adaptation. Returns true |
182 // if a frame is wanted. Returns false if there are no interested | 185 // if a frame is wanted. Returns false if there are no interested |
183 // sinks, or if the VideoAdapter decides to drop the frame. | 186 // sinks, or if the VideoAdapter decides to drop the frame. |
184 | 187 |
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203 int* crop_width, | 206 int* crop_width, |
204 int* crop_height, | 207 int* crop_height, |
205 int* crop_x, | 208 int* crop_x, |
206 int* crop_y, | 209 int* crop_y, |
207 int64_t* translated_camera_time_us); | 210 int64_t* translated_camera_time_us); |
208 | 211 |
209 // Called when a frame has been captured and converted to a | 212 // Called when a frame has been captured and converted to a |
210 // VideoFrame. OnFrame can be called directly by an implementation | 213 // VideoFrame. OnFrame can be called directly by an implementation |
211 // that does not use SignalFrameCaptured or OnFrameCaptured. The | 214 // that does not use SignalFrameCaptured or OnFrameCaptured. The |
212 // orig_width and orig_height are used only to produce stats. | 215 // orig_width and orig_height are used only to produce stats. |
213 void OnFrame(const VideoFrame& frame, int orig_width, int orig_height); | 216 void OnFrame(const webrtc::VideoFrame& frame, |
| 217 int orig_width, |
| 218 int orig_height); |
214 | 219 |
215 VideoAdapter* video_adapter() { return &video_adapter_; } | 220 VideoAdapter* video_adapter() { return &video_adapter_; } |
216 | 221 |
217 void SetCaptureState(CaptureState state); | 222 void SetCaptureState(CaptureState state); |
218 | 223 |
219 // subclasses override this virtual method to provide a vector of fourccs, in | 224 // subclasses override this virtual method to provide a vector of fourccs, in |
220 // order of preference, that are expected by the media engine. | 225 // order of preference, that are expected by the media engine. |
221 virtual bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) = 0; | 226 virtual bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) = 0; |
222 | 227 |
223 // mutators to set private attributes | 228 // mutators to set private attributes |
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274 bool apply_rotation_; | 279 bool apply_rotation_; |
275 | 280 |
276 // State for the timestamp translation. | 281 // State for the timestamp translation. |
277 rtc::TimestampAligner timestamp_aligner_; | 282 rtc::TimestampAligner timestamp_aligner_; |
278 RTC_DISALLOW_COPY_AND_ASSIGN(VideoCapturer); | 283 RTC_DISALLOW_COPY_AND_ASSIGN(VideoCapturer); |
279 }; | 284 }; |
280 | 285 |
281 } // namespace cricket | 286 } // namespace cricket |
282 | 287 |
283 #endif // WEBRTC_MEDIA_BASE_VIDEOCAPTURER_H_ | 288 #endif // WEBRTC_MEDIA_BASE_VIDEOCAPTURER_H_ |
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