Move talk/media to webrtc/media

talk/media/base/capturerenderadapter.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/media/base/capturerenderadapter.h"
-
-#include "talk/media/base/videocapturer.h"
-#include "talk/media/base/videorenderer.h"
-#include "webrtc/base/logging.h"
-
-namespace cricket {
-
-CaptureRenderAdapter::CaptureRenderAdapter(VideoCapturer* video_capturer)
-    : video_capturer_(video_capturer) {
-}
-
-CaptureRenderAdapter::~CaptureRenderAdapter() {
-  // Since the signal we're connecting to is multi-threaded,
-  // disconnect_all() will block until all calls are serviced, meaning any
-  // outstanding calls to OnVideoFrame will be done when this is done, and no
-  // more calls will be serviced by this.
-  // We do this explicitly instead of just letting the has_slots<> destructor
-  // take care of it because we need to do this *before* video_renderers_ is
-  // cleared by the destructor; otherwise we could mess with it while
-  // OnVideoFrame is running.
-  // We *don't* take capture_crit_ here since it could deadlock with the lock
-  // taken by the video frame signal.
-  disconnect_all();
-}
-
-CaptureRenderAdapter* CaptureRenderAdapter::Create(
-    VideoCapturer* video_capturer) {
-  if (!video_capturer) {
-    return NULL;
-  }
-  CaptureRenderAdapter* return_value = new CaptureRenderAdapter(video_capturer);
-  return_value->Init();  // Can't fail.
-  return return_value;
-}
-
-bool CaptureRenderAdapter::AddRenderer(VideoRenderer* video_renderer) {
-  if (!video_renderer) {
-    return false;
-  }
-  rtc::CritScope cs(&capture_crit_);
-  if (IsRendererRegistered(*video_renderer)) {
-    return false;
-  }
-  video_renderers_.push_back(VideoRendererInfo(video_renderer));
-  return true;
-}
-
-bool CaptureRenderAdapter::RemoveRenderer(VideoRenderer* video_renderer) {
-  if (!video_renderer) {
-    return false;
-  }
-  rtc::CritScope cs(&capture_crit_);
-  for (VideoRenderers::iterator iter = video_renderers_.begin();
-       iter != video_renderers_.end(); ++iter) {
-    if (video_renderer == iter->renderer) {
-      video_renderers_.erase(iter);
-      return true;
-    }
-  }
-  return false;
-}
-
-void CaptureRenderAdapter::Init() {
-  video_capturer_->SignalVideoFrame.connect(
-      this,
-      &CaptureRenderAdapter::OnVideoFrame);
-}
-
-void CaptureRenderAdapter::OnVideoFrame(VideoCapturer* capturer,
-                                        const VideoFrame* video_frame) {
-  rtc::CritScope cs(&capture_crit_);
-  if (video_renderers_.empty()) {
-    return;
-  }
-  MaybeSetRenderingSize(video_frame);
-
-  for (VideoRenderers::iterator iter = video_renderers_.begin();
-       iter != video_renderers_.end(); ++iter) {
-    VideoRenderer* video_renderer = iter->renderer;
-    video_renderer->RenderFrame(video_frame);
-  }
-}
-
-// The renderer_crit_ lock needs to be taken when calling this function.
-void CaptureRenderAdapter::MaybeSetRenderingSize(const VideoFrame* frame) {
-  for (VideoRenderers::iterator iter = video_renderers_.begin();
-       iter != video_renderers_.end(); ++iter) {
-    const bool new_resolution = iter->render_width != frame->GetWidth() ||
-        iter->render_height != frame->GetHeight();
-    if (new_resolution) {
-      if (iter->renderer->SetSize(static_cast<int>(frame->GetWidth()),
-                                  static_cast<int>(frame->GetHeight()), 0)) {
-        iter->render_width = frame->GetWidth();
-        iter->render_height = frame->GetHeight();
-      } else {
-        LOG(LS_ERROR) << "Captured frame size not supported by renderer: " <<
-            frame->GetWidth() << " x " << frame->GetHeight();
-      }
-    }
-  }
-}
-
-// The renderer_crit_ lock needs to be taken when calling this function.
-bool CaptureRenderAdapter::IsRendererRegistered(
-    const VideoRenderer& video_renderer) const {
-  for (VideoRenderers::const_iterator iter = video_renderers_.begin();
-       iter != video_renderers_.end(); ++iter) {
-    if (&video_renderer == iter->renderer) {
-      return true;
-    }
-  }
-  return false;
-}
-
-}  // namespace cricket