Implements MediaStreamVideoSource.

content/renderer/media/webrtc/webrtc_video_source_adapter.cc

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/renderer/media/webrtc/webrtc_video_source_adapter.h"
+
+#include "content/renderer/media/media_stream_dependency_factory.h"
+#include "content/renderer/media/media_stream_source_extra_data.h"
+#include "content/renderer/render_thread_impl.h"
+#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
+
+namespace content {
+
+WebRtcVideoSourceAdapter::WebRtcVideoSourceAdapter(
+    const blink::WebMediaStreamTrack& track,
+    const blink::WebMediaConstraints& constraints,
+    MediaStreamDependencyFactory* factory)
+    : track_(track),
+      constraints_(constraints),
+      factory_(factory),
+      native_source_(WebRtcVideoSource::Create()) {
+  DCHECK(!track_.isNull());
+  DCHECK(!track_.source().isNull());
+  DCHECK(track_.source().type() == blink::WebMediaStreamSource::TypeVideo);
+}
+
+WebRtcVideoSourceAdapter::~WebRtcVideoSourceAdapter() {
+}
+
+bool WebRtcVideoSourceAdapter::Init() {
+  blink::WebMediaStreamSource source = track_.source();
+  MediaStreamSourceExtraData* source_data = new MediaStreamSourceExtraData();
+  source_data->SetVideoSource(native_source_.get());
+  source.setExtraData(source_data);
+
+  factory_->CreateNativeMediaStreamTrack(track_);
+  return true;
+}
+
+void WebRtcVideoSourceAdapter::DeliverVideoFrame(
+    const scoped_refptr<media::VideoFrame>& frame) {
+  // TODO(ronghuawu): Convert and deliver |frame| to
+  // native_source_->FrameInput()->RenderFrame(...)
+}
+
+}  // namespace content