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      1 /*
      2  * libjingle
      3  * Copyright 2013, 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 #if !defined(__has_feature) || !__has_feature(objc_arc)
     29 #error "This file requires ARC support."
     30 #endif
     31 
     32 #import "RTCVideoCapturer+internal.h"
     33 
     34 #include "talk/media/base/videocapturer.h"
     35 #include "talk/media/devices/devicemanager.h"
     36 
     37 @implementation RTCVideoCapturer {
     38   talk_base::scoped_ptr<cricket::VideoCapturer>_capturer;
     39 }
     40 
     41 + (RTCVideoCapturer *)capturerWithDeviceName:(NSString *)deviceName {
     42   const std::string &device_name = std::string([deviceName UTF8String]);
     43   talk_base::scoped_ptr<cricket::DeviceManagerInterface> device_manager(
     44       cricket::DeviceManagerFactory::Create());
     45   bool initialized = device_manager->Init();
     46   NSAssert(initialized, @"DeviceManager::Init() failed");
     47   cricket::Device device;
     48   if (!device_manager->GetVideoCaptureDevice(device_name, &device)) {
     49     LOG(LS_ERROR) << "GetVideoCaptureDevice failed";
     50     return 0;
     51   }
     52   talk_base::scoped_ptr<cricket::VideoCapturer> capturer(
     53       device_manager->CreateVideoCapturer(device));
     54   RTCVideoCapturer *rtcCapturer =
     55       [[RTCVideoCapturer alloc] initWithCapturer:capturer.release()];
     56   return rtcCapturer;
     57 }
     58 
     59 @end
     60 
     61 @implementation RTCVideoCapturer (Internal)
     62 
     63 - (id)initWithCapturer:(cricket::VideoCapturer *)capturer {
     64   if ((self = [super init])) {
     65     _capturer.reset(capturer);
     66   }
     67   return self;
     68 }
     69 
     70 // TODO(hughv):  When capturer is implemented, this needs to return
     71 // _capturer.release() instead.  For now, this isn't used.
     72 - (const talk_base::scoped_ptr<cricket::VideoCapturer> &)capturer {
     73   return _capturer;
     74 }
     75 
     76 @end
     77