Index: content/renderer/media/video_destination_handler.h |
=================================================================== |
--- content/renderer/media/video_destination_handler.h (revision 0) |
+++ content/renderer/media/video_destination_handler.h (revision 0) |
@@ -0,0 +1,99 @@ |
+// Copyright (c) 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. |
+ |
+#ifndef CONTENT_RENDERER_MEDIA_VIDEO_DESTINATION_HANDLER_H_ |
+#define CONTENT_RENDERER_MEDIA_VIDEO_DESTINATION_HANDLER_H_ |
+ |
+#include <string> |
+#include <vector> |
+ |
+#include "base/compiler_specific.h" |
+#include "base/synchronization/lock.h" |
+#include "content/common/content_export.h" |
+#include "third_party/libjingle/source/talk/media/base/videocapturer.h" |
+ |
+namespace webkit { |
+namespace ppapi { |
+class PPB_ImageData_Impl; |
+} |
+} |
+ |
+namespace content { |
+ |
+class MediaStreamDependencyFactory; |
+class MediaStreamRegistryInterface; |
+ |
+// Interface used by the effects pepper plugin to output the processed frame |
+// to the video track. |
+class CONTENT_EXPORT FrameWriterInterface { |
+ public: |
+ // The ownership of the |image_data| deosn't transfer. So the implementation |
+ // of this interface should make a copy of the |image_data| before return. |
+ virtual void PutFrame(webkit::ppapi::PPB_ImageData_Impl* image_data, |
+ int64 time_stamp_ns) = 0; |
+ virtual ~FrameWriterInterface() {} |
+}; |
+ |
+// PpFrameWriter implements cricket::VideoCapturer so that it can be used in |
+// the native video track's video source. It also implements |
+// FrameWriterInterface, which will be used by the effects pepper plugin to |
+// inject the processed frame. |
+class CONTENT_EXPORT PpFrameWriter |
+ : public NON_EXPORTED_BASE(cricket::VideoCapturer), |
+ public FrameWriterInterface { |
+ public: |
+ PpFrameWriter(); |
+ virtual ~PpFrameWriter(); |
+ |
+ // cricket::VideoCapturer implementation. |
+ // These methods are accessed from a libJingle worker thread. |
+ virtual cricket::CaptureState Start( |
+ const cricket::VideoFormat& capture_format) OVERRIDE; |
+ virtual void Stop() OVERRIDE; |
+ virtual bool IsRunning() OVERRIDE; |
+ virtual bool GetPreferredFourccs(std::vector<uint32>* fourccs) OVERRIDE; |
+ virtual bool GetBestCaptureFormat(const cricket::VideoFormat& desired, |
+ cricket::VideoFormat* best_format) OVERRIDE; |
+ virtual bool IsScreencast() const OVERRIDE; |
+ |
+ // FrameWriterInterface implementation. |
+ // This method will be called by the Pepper host from render thread. |
+ virtual void PutFrame(webkit::ppapi::PPB_ImageData_Impl* image_data, |
+ int64 time_stamp_ns) OVERRIDE; |
+ |
+ private: |
+ bool started_; |
+ // |lock_| is used to protect |started_| which will be accessed from different |
+ // threads - libjingle worker thread and render thread. |
+ base::Lock lock_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(PpFrameWriter); |
+}; |
+ |
+// VideoDestinationHandler is a glue class between the webrtc MediaStream and |
+// the effects pepper plugin host. |
+class CONTENT_EXPORT VideoDestinationHandler { |
+ public: |
+ // Instantiates and adds a new video track to the MediaStream specified by |
+ // |url|. Returns a handler for delivering frames to the new video track as |
+ // |frame_writer|. |
+ // If |factory| is NULL the MediaStreamDependencyFactory owned by |
+ // RenderThreadImpl::current() will be used. |
+ // If |registry| is NULL the global WebKit::WebMediaStreamRegistry will be |
+ // used to look up the media stream. |
+ // The caller of the function takes the ownership of |frame_writer|. |
+ // Returns true on success and false on failure. |
+ static bool Open(MediaStreamDependencyFactory* factory, |
+ MediaStreamRegistryInterface* registry, |
+ const std::string& url, |
+ FrameWriterInterface** frame_writer); |
+ |
+ private: |
+ DISALLOW_COPY_AND_ASSIGN(VideoDestinationHandler); |
+}; |
+ |
+} // namespace content |
+ |
+#endif // CONTENT_RENDERER_MEDIA_VIDEO_DESTINATION_HANDLER_H_ |
+ |
Property changes on: content/renderer/media/video_destination_handler.h |
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Added: svn:eol-style |
+ LF |