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1 /* | 1 /* |
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2016 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 #ifndef WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_ | 11 #ifndef WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_ |
12 #define WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_ | 12 #define WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_ |
13 | 13 |
14 #include "webrtc/media/base/videosinkinterface.h" | 14 #include "webrtc/media/base/videosinkinterface.h" |
15 #include "webrtc/base/optional.h" | 15 #include "webrtc/base/optional.h" |
16 | 16 |
17 namespace rtc { | 17 namespace rtc { |
18 | 18 |
19 // VideoSinkWants is used for notifying the source of properties a video frame | 19 // VideoSinkWants is used for notifying the source of properties a video frame |
20 // should have when it is delivered to a certain sink. | 20 // should have when it is delivered to a certain sink. |
21 struct VideoSinkWants { | 21 struct VideoSinkWants { |
22 // Tells the source whether the sink wants frames with rotation applied. | 22 // Tells the source whether the sink wants frames with rotation applied. |
23 // By default, any rotation must be applied by the sink. | 23 // By default, any rotation must be applied by the sink. |
24 bool rotation_applied = false; | 24 bool rotation_applied = false; |
25 | 25 |
26 // Tells the source that the sink only wants black frames. | 26 // Tells the source that the sink only wants black frames. |
27 bool black_frames = false; | 27 bool black_frames = false; |
28 | 28 |
29 // Tells the source the maximum number of pixels the sink wants. | 29 // Tells the source the maximum number of pixels the sink wants. |
30 int max_pixel_count = std::numeric_limits<int>::max(); | 30 rtc::Optional<int> max_pixel_count; |
31 // Tells the source the desired number of pixels the sinks wants. This will | 31 // Tells the source the desired number of pixels the sinks wants. This will |
32 // typically be used when stepping the resolution up again when conditions | 32 // typically be used when stepping the resolution up again when conditions |
33 // have improved after an earlier downgrade. The source should select the | 33 // have improved after an earlier downgrade. The source should select the |
34 // closest resolution to this pixel count, but if max_pixel_count is set, it | 34 // closest resolution to this pixel count, but if max_pixel_count is set, it |
35 // still sets the absolute upper bound. | 35 // still sets the absolute upper bound. |
36 rtc::Optional<int> target_pixel_count; | 36 rtc::Optional<int> target_pixel_count; |
37 // Tells the source the maximum framerate the sink wants. | |
38 int max_framerate_fps = std::numeric_limits<int>::max(); | |
39 }; | 37 }; |
40 | 38 |
41 template <typename VideoFrameT> | 39 template <typename VideoFrameT> |
42 class VideoSourceInterface { | 40 class VideoSourceInterface { |
43 public: | 41 public: |
44 virtual void AddOrUpdateSink(VideoSinkInterface<VideoFrameT>* sink, | 42 virtual void AddOrUpdateSink(VideoSinkInterface<VideoFrameT>* sink, |
45 const VideoSinkWants& wants) = 0; | 43 const VideoSinkWants& wants) = 0; |
46 // RemoveSink must guarantee that at the time the method returns, | 44 // RemoveSink must guarantee that at the time the method returns, |
47 // there is no current and no future calls to VideoSinkInterface::OnFrame. | 45 // there is no current and no future calls to VideoSinkInterface::OnFrame. |
48 virtual void RemoveSink(VideoSinkInterface<VideoFrameT>* sink) = 0; | 46 virtual void RemoveSink(VideoSinkInterface<VideoFrameT>* sink) = 0; |
49 | 47 |
50 protected: | 48 protected: |
51 virtual ~VideoSourceInterface() {} | 49 virtual ~VideoSourceInterface() {} |
52 }; | 50 }; |
53 | 51 |
54 } // namespace rtc | 52 } // namespace rtc |
55 #endif // WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_ | 53 #endif // WEBRTC_MEDIA_BASE_VIDEOSOURCEINTERFACE_H_ |
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