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// Copyright 2014 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_MEDIA_STREAM_VIDEO_CAPTURER_SOURCE_H_
#define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_CAPTURER_SOURCE_H_
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/thread_checker.h"
#include "content/common/media/video_capture.h"
#include "content/renderer/media/media_stream_video_source.h"
namespace media {
class VideoCapturerSource;
} // namespace media
namespace content {
// Representation of a video stream coming from a camera, owned by Blink as
// WebMediaStreamSource. Objects of this class are created and live on main
// Render thread. Objects can be constructed either by indicating a |device| to
// look for, or by plugging in a |source| constructed elsewhere.
class CONTENT_EXPORT MediaStreamVideoCapturerSource
: public MediaStreamVideoSource {
public:
MediaStreamVideoCapturerSource(const SourceStoppedCallback& stop_callback,
scoped_ptr<media::VideoCapturerSource> source);
MediaStreamVideoCapturerSource(const SourceStoppedCallback& stop_callback,
const StreamDeviceInfo& device_info);
~MediaStreamVideoCapturerSource() override;
// Implements MediaStreamVideoSource.
void RequestRefreshFrame() override;
private:
friend class CanvasCaptureHandlerTest;
friend class MediaStreamVideoCapturerSourceTest;
// Implements MediaStreamVideoSource.
void GetCurrentSupportedFormats(
int max_requested_width,
int max_requested_height,
double max_requested_frame_rate,
const VideoCaptureDeviceFormatsCB& callback) override;
void StartSourceImpl(
const media::VideoCaptureFormat& format,
const blink::WebMediaConstraints& constraints,
const VideoCaptureDeliverFrameCB& frame_callback) override;
void StopSourceImpl() override;
// Method to bind as RunningCallback in VideoCapturerSource::StartCapture().
void OnStarted(bool result);
const char* GetPowerLineFrequencyForTesting() const;
// The source that provides video frames.
const scoped_ptr<media::VideoCapturerSource> source_;
DISALLOW_COPY_AND_ASSIGN(MediaStreamVideoCapturerSource);
};
} // namespace content
#endif // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_CAPTURER_SOURCE_H_
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