1 /* 2 * libjingle 3 * Copyright 2015 Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TALK_APP_WEBRTC_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_ 29 #define TALK_APP_WEBRTC_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_ 30 31 #include "talk/media/base/videocapturer.h" 32 #include "webrtc/base/scoped_ptr.h" 33 #include "webrtc/video_frame.h" 34 35 #import <AVFoundation/AVFoundation.h> 36 37 @class RTCAVFoundationVideoCapturerInternal; 38 39 namespace webrtc { 40 41 class AVFoundationVideoCapturer : public cricket::VideoCapturer { 42 public: 43 AVFoundationVideoCapturer(); 44 ~AVFoundationVideoCapturer(); 45 46 cricket::CaptureState Start(const cricket::VideoFormat& format) override; 47 void Stop() override; 48 bool IsRunning() override; IsScreencast()49 bool IsScreencast() const override { 50 return false; 51 } GetPreferredFourccs(std::vector<uint32_t> * fourccs)52 bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override { 53 fourccs->push_back(cricket::FOURCC_NV12); 54 return true; 55 } 56 57 // Returns the active capture session. 58 AVCaptureSession* GetCaptureSession(); 59 60 // Switches the camera being used (either front or back). 61 void SetUseBackCamera(bool useBackCamera); 62 bool GetUseBackCamera() const; 63 64 // Converts the sample buffer into a cricket::CapturedFrame and signals the 65 // frame for capture. 66 void CaptureSampleBuffer(CMSampleBufferRef sampleBuffer); 67 68 private: 69 // Used to signal frame capture on the thread that capturer was started on. 70 void SignalFrameCapturedOnStartThread(const cricket::CapturedFrame* frame); 71 72 RTCAVFoundationVideoCapturerInternal* _capturer; 73 rtc::Thread* _startThread; // Set in Start(), unset in Stop(). 74 }; // AVFoundationVideoCapturer 75 76 } // namespace webrtc 77 78 #endif // TALK_APP_WEBRTC_OBJC_AVFOUNDATION_CAPTURER_H_ 79