src/third_party/libjingle/source/talk/media/base/fakescreencapturerfactory.h

   1 /*
   2  * libjingle
   3  * Copyright 2012 Google Inc.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
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   7  *
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   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,
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  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_MEDIA_BASE_FAKESCREENCAPTURERFACTORY_H_
  29 #define TALK_MEDIA_BASE_FAKESCREENCAPTURERFACTORY_H_
  30
  31 #include "talk/media/base/fakevideocapturer.h"
  32 #include "talk/media/base/videocapturerfactory.h"
  33
  34 namespace cricket {
  35
  36 class FakeScreenCapturerFactory
  37     : public cricket::ScreenCapturerFactory,
  38       public sigslot::has_slots<> {
  39  public:
  40   FakeScreenCapturerFactory()
  41       : window_capturer_(NULL),
  42         capture_state_(cricket::CS_STOPPED) {}
  43
  44   virtual cricket::VideoCapturer* Create(const ScreencastId& window) {
  45     if (window_capturer_ != NULL) {
  46       return NULL;
  47     }
  48     window_capturer_ = new cricket::FakeVideoCapturer;
  49     window_capturer_->SignalDestroyed.connect(
  50         this,
  51         &FakeScreenCapturerFactory::OnWindowCapturerDestroyed);
  52     window_capturer_->SignalStateChange.connect(
  53         this,
  54         &FakeScreenCapturerFactory::OnStateChange);
  55     return window_capturer_;
  56   }
  57
  58   cricket::FakeVideoCapturer* window_capturer() { return window_capturer_; }
  59
  60   cricket::CaptureState capture_state() { return capture_state_; }
  61
  62  private:
  63   void OnWindowCapturerDestroyed(cricket::FakeVideoCapturer* capturer) {
  64     if (capturer == window_capturer_) {
  65       window_capturer_ = NULL;
  66     }
  67   }
  68   void OnStateChange(cricket::VideoCapturer*, cricket::CaptureState state) {
  69     capture_state_ = state;
  70   }
  71
  72   cricket::FakeVideoCapturer* window_capturer_;
  73   cricket::CaptureState capture_state_;
  74 };
  75
  76 }  // namespace cricket
  77
  78 #endif  // TALK_MEDIA_BASE_FAKESCREENCAPTURERFACTORY_H_