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// Copyright (c) 2012 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_RTC_VIDEO_CAPTURER_H_
#define CONTENT_RENDERER_MEDIA_RTC_VIDEO_CAPTURER_H_
#include <vector>
#include "base/compiler_specific.h"
#include "content/renderer/media/rtc_video_capture_delegate.h"
#include "third_party/libjingle/source/talk/media/base/videocapturer.h"
class VideoCaptureImplManager;
// RtcVideoCapturer implements a simple cricket::VideoCapturer that is used for
// VideoCapturing in libJingle and especially in PeerConnections.
// The class is created and destroyed on the main render thread.
// PeerConnection access cricket::VideoCapturer from a libJingle worker thread.
// The video frames are delivered in OnFrameCaptured on a thread owned by
// Chrome's video capture implementation.
class RtcVideoCapturer
: public cricket::VideoCapturer {
public:
RtcVideoCapturer(const media::VideoCaptureSessionId id,
VideoCaptureImplManager* vc_manager,
bool is_screencast);
virtual ~RtcVideoCapturer();
// 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() OVERRIDE;
private:
// Frame captured callback method.
virtual void OnFrameCaptured(
const media::VideoCapture::VideoFrameBuffer& frame);
// State change callback, must be called on same thread as Start is called.
void OnStateChange(RtcVideoCaptureDelegate::CaptureState state);
const bool is_screencast_;
scoped_refptr<RtcVideoCaptureDelegate> delegate_;
video_capture::State state_;
base::Time start_time_;
DISALLOW_COPY_AND_ASSIGN(RtcVideoCapturer);
};
#endif // CONTENT_RENDERER_MEDIA_RTC_VIDEO_CAPTURER_H_
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