| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_ |
| #define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_ |
| |
| #include <stdint.h> |
| |
| #include <vector> |
| |
| #include "base/compiler_specific.h" |
| #include "base/macros.h" |
| #include "base/threading/thread_checker.h" |
| #include "content/common/content_export.h" |
| #include "media/base/video_frame.h" |
| #include "media/base/video_frame_pool.h" |
| #include "media/capture/video_capture_types.h" |
| #include "third_party/blink/public/platform/web_media_stream_track.h" |
| #include "third_party/webrtc/media/base/videocapturer.h" |
| |
| namespace content { |
| |
| // WebRtcVideoCapturerAdapter implements a simple cricket::VideoCapturer that is |
| // used for VideoCapturing in libJingle and especially in PeerConnections. |
| // The class is created and destroyed on the main render thread. |
| // PeerConnection access cricket::VideoCapturer from a libJingle worker thread. |
| // An instance of WebRtcVideoCapturerAdapter is owned by an instance of |
| // webrtc::VideoTrackSourceInterface in libJingle. The implementation of |
| // webrtc::VideoTrackSourceInterface guarantees that this object is not deleted |
| // while it is still used in libJingle. |
| class CONTENT_EXPORT WebRtcVideoCapturerAdapter |
| : public cricket::VideoCapturer { |
| public: |
| WebRtcVideoCapturerAdapter(bool is_screencast); |
| ~WebRtcVideoCapturerAdapter() override; |
| |
| // OnFrameCaptured delivers video frames to libjingle. It must be called on |
| // libjingles worker thread. |
| // This method is virtual for testing purposes. |
| virtual void OnFrameCaptured(const scoped_refptr<media::VideoFrame>& frame); |
| |
| private: |
| // cricket::VideoCapturer implementation. |
| // These methods are accessed from a libJingle worker thread. |
| cricket::CaptureState Start( |
| const cricket::VideoFormat& capture_format) override; |
| void Stop() override; |
| bool IsRunning() override; |
| bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override; |
| bool GetBestCaptureFormat(const cricket::VideoFormat& desired, |
| cricket::VideoFormat* best_format) override; |
| bool IsScreencast() const override; |
| |
| // |thread_checker_| is bound to the libjingle worker thread. |
| base::ThreadChecker thread_checker_; |
| |
| const bool is_screencast_; |
| bool running_; |
| |
| media::VideoFramePool scaled_frame_pool_; |
| |
| DISALLOW_COPY_AND_ASSIGN(WebRtcVideoCapturerAdapter); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_VIDEO_CAPTURER_ADAPTER_H_ |