OLD | NEW |
(Empty) | |
| 1 /* |
| 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 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 |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 #ifndef WEBRTC_MEDIA_BASE_ADAPTEDVIDEOTRACKSOURCE_H_ |
| 12 #define WEBRTC_MEDIA_BASE_ADAPTEDVIDEOTRACKSOURCE_H_ |
| 13 |
| 14 #include "webrtc/api/mediastreaminterface.h" |
| 15 #include "webrtc/api/notifier.h" |
| 16 #include "webrtc/media/base/videoadapter.h" |
| 17 #include "webrtc/media/base/videobroadcaster.h" |
| 18 |
| 19 namespace rtc { |
| 20 |
| 21 class AdaptedVideoTrackSource |
| 22 : public webrtc::Notifier<webrtc::VideoTrackSourceInterface> { |
| 23 public: |
| 24 AdaptedVideoTrackSource(); |
| 25 |
| 26 // Returns false if no stats are available, e.g, for a remote |
| 27 // source, or a source which has not seen its first frame yet. |
| 28 // Should avoid blocking. |
| 29 bool GetStats(Stats* stats) override; |
| 30 |
| 31 // Implements rtc::VideoSourceInterface |
| 32 void AddOrUpdateSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink, |
| 33 const rtc::VideoSinkWants& wants) override; |
| 34 void RemoveSink(rtc::VideoSinkInterface<cricket::VideoFrame>* sink) override; |
| 35 |
| 36 protected: |
| 37 // Checks the apply_rotation_ flag. If the frame needs rotation, it |
| 38 // will be rotated if it is a plain memory frame, and discarded it |
| 39 // if it is a native frame. (Subclasses producing native frames must |
| 40 // handle applied_rotation themselves). |
| 41 void OnFrame(const cricket::VideoFrame& frame, int width, int height); |
| 42 |
| 43 void OnSinkWantsChanged(const rtc::VideoSinkWants& wants); |
| 44 |
| 45 // Reports the appropriate frame size after adaptation. Returns true |
| 46 // if a frame is wanted. Returns false if there are no interested |
| 47 // sinks, or if the VideoAdapter decides to drop the frame. |
| 48 bool AdaptFrame(int width, |
| 49 int height, |
| 50 int64_t time_us, |
| 51 int* out_width, |
| 52 int* out_height, |
| 53 int* crop_width, |
| 54 int* crop_height, |
| 55 int* crop_x, |
| 56 int* crop_y); |
| 57 |
| 58 // Returns the current value of the apply_rotation flag, derived |
| 59 // from the VideoSinkWants of registered sinks. Beware that when |
| 60 // using this method, the value may become stale before it is used. |
| 61 bool apply_rotation(); |
| 62 |
| 63 cricket::VideoAdapter* video_adapter() { return &video_adapter_; } |
| 64 |
| 65 private: |
| 66 rtc::ThreadChecker thread_checker_; |
| 67 |
| 68 cricket::VideoAdapter video_adapter_; |
| 69 |
| 70 rtc::CriticalSection apply_rotation_crit_; |
| 71 bool apply_rotation_ GUARDED_BY(apply_rotation_crit_); |
| 72 |
| 73 rtc::CriticalSection stats_crit_; |
| 74 rtc::Optional<Stats> stats_ GUARDED_BY(stats_crit_); |
| 75 |
| 76 VideoBroadcaster broadcaster_; |
| 77 }; |
| 78 |
| 79 } // namespace rtc |
| 80 |
| 81 #endif // WEBRTC_MEDIA_BASE_ADAPTEDVIDEOTRACKSOURCE_H_ |
OLD | NEW |