Move talk/app/webrtc to webrtc/api

talk/app/webrtc/videotrackrenderers.cc

-/*
- * libjingle
- * Copyright 2012 Google Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- *  1. Redistributions of source code must retain the above copyright notice,
- *     this list of conditions and the following disclaimer.
- *  2. Redistributions in binary form must reproduce the above copyright notice,
- *     this list of conditions and the following disclaimer in the documentation
- *     and/or other materials provided with the distribution.
- *  3. The name of the author may not be used to endorse or promote products
- *     derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "talk/app/webrtc/videotrackrenderers.h"
-#include "webrtc/media/webrtc/webrtcvideoframe.h"
-
-namespace webrtc {
-
-VideoTrackRenderers::VideoTrackRenderers() : enabled_(true) {
-}
-
-VideoTrackRenderers::~VideoTrackRenderers() {
-}
-
-void VideoTrackRenderers::AddRenderer(VideoRendererInterface* renderer) {
-  if (!renderer) {
-    return;
-  }
-  rtc::CritScope cs(&critical_section_);
-  renderers_.insert(renderer);
-}
-
-void VideoTrackRenderers::RemoveRenderer(VideoRendererInterface* renderer) {
-  rtc::CritScope cs(&critical_section_);
-  renderers_.erase(renderer);
-}
-
-void VideoTrackRenderers::SetEnabled(bool enable) {
-  rtc::CritScope cs(&critical_section_);
-  enabled_ = enable;
-}
-
-bool VideoTrackRenderers::RenderFrame(const cricket::VideoFrame* frame) {
-  {
-    rtc::CritScope cs(&critical_section_);
-    if (enabled_) {
-      RenderFrameToRenderers(frame);
-      return true;
-    }
-  }
-
-  // Generate the black frame outside of the critical section. Note
-  // that this may result in unexpected frame order, in the unlikely
-  // case that RenderFrame is called from multiple threads without
-  // proper serialization, and the track is switched from disabled to
-  // enabled in the middle of the first call.
-  cricket::WebRtcVideoFrame black(new rtc::RefCountedObject<I420Buffer>(
-                                      static_cast<int>(frame->GetWidth()),
-                                      static_cast<int>(frame->GetHeight())),
-                                  frame->GetTimeStamp(),
-                                  frame->GetVideoRotation());
-  black.SetToBlack();
-
-  {
-    rtc::CritScope cs(&critical_section_);
-    // Check enabled_ flag again, since the track might have been
-    // enabled while we generated the black frame. I think the
-    // enabled-ness ought to be applied at the track output, and hence
-    // an enabled track shouldn't send any blacked out frames.
-    RenderFrameToRenderers(enabled_ ? frame : &black);
-
-    return true;
-  }
-}
-
-// Called with critical_section_ already locked
-void VideoTrackRenderers::RenderFrameToRenderers(
-    const cricket::VideoFrame* frame) {
-  for (VideoRendererInterface* renderer : renderers_) {
-    renderer->RenderFrame(frame);
-  }
-}
-
-}  // namespace webrtc