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      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 #import "RTCAVFoundationVideoSource+Internal.h"
     29 
     30 #import "RTCMediaConstraints+Internal.h"
     31 #import "RTCMediaSource+Internal.h"
     32 #import "RTCPeerConnectionFactory+Internal.h"
     33 #import "RTCVideoSource+Internal.h"
     34 
     35 @implementation RTCAVFoundationVideoSource
     36 
     37 - (instancetype)initWithFactory:(RTCPeerConnectionFactory*)factory
     38                     constraints:(RTCMediaConstraints*)constraints {
     39   NSParameterAssert(factory);
     40   rtc::scoped_ptr<webrtc::AVFoundationVideoCapturer> capturer;
     41   capturer.reset(new webrtc::AVFoundationVideoCapturer());
     42   rtc::scoped_refptr<webrtc::VideoSourceInterface> source =
     43       factory.nativeFactory->CreateVideoSource(capturer.release(),
     44                                                constraints.constraints);
     45   return [super initWithMediaSource:source];
     46 }
     47 
     48 - (BOOL)useBackCamera {
     49   return self.capturer->GetUseBackCamera();
     50 }
     51 
     52 - (void)setUseBackCamera:(BOOL)useBackCamera {
     53   self.capturer->SetUseBackCamera(useBackCamera);
     54 }
     55 
     56 - (AVCaptureSession*)captureSession {
     57   return self.capturer->GetCaptureSession();
     58 }
     59 
     60 - (webrtc::AVFoundationVideoCapturer*)capturer {
     61   cricket::VideoCapturer* capturer = self.videoSource->GetVideoCapturer();
     62   // This should be safe because no one should have changed the underlying video
     63   // source.
     64   webrtc::AVFoundationVideoCapturer* foundationCapturer =
     65       static_cast<webrtc::AVFoundationVideoCapturer*>(capturer);
     66   return foundationCapturer;
     67 }
     68 
     69 @end
     70