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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.
// Windows specific implementation of VideoCaptureDevice.
// DirectShow is used for capturing. DirectShow provide its own threads
// for capturing.
#ifndef MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_
#define MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_
#include <mfidl.h>
#include <mfreadwrite.h>
#include <vector>
#include "base/synchronization/lock.h"
#include "base/threading/non_thread_safe.h"
#include "base/win/scoped_comptr.h"
#include "media/base/media_export.h"
#include "media/video/capture/video_capture_device.h"
interface IMFSourceReader;
namespace media {
class MFReaderCallback;
const DWORD kFirstVideoStream =
static_cast<DWORD>(MF_SOURCE_READER_FIRST_VIDEO_STREAM);
class MEDIA_EXPORT VideoCaptureDeviceMFWin
: public base::NonThreadSafe,
public VideoCaptureDevice {
public:
static bool FormatFromGuid(const GUID& guid, VideoPixelFormat* format);
explicit VideoCaptureDeviceMFWin(const Name& device_name);
~VideoCaptureDeviceMFWin() override;
// Opens the device driver for this device.
bool Init(const base::win::ScopedComPtr<IMFMediaSource>& source);
// VideoCaptureDevice implementation.
void AllocateAndStart(const VideoCaptureParams& params,
scoped_ptr<VideoCaptureDevice::Client> client) override;
void StopAndDeAllocate() override;
// Captured new video data.
void OnIncomingCapturedData(const uint8* data,
int length,
int rotation,
const base::TimeTicks& time_stamp);
private:
void OnError(HRESULT hr);
Name name_;
base::win::ScopedComPtr<IMFActivate> device_;
scoped_refptr<MFReaderCallback> callback_;
base::Lock lock_; // Used to guard the below variables.
scoped_ptr<VideoCaptureDevice::Client> client_;
base::win::ScopedComPtr<IMFSourceReader> reader_;
VideoCaptureFormat capture_format_;
bool capture_;
DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceMFWin);
};
} // namespace media
#endif // MEDIA_VIDEO_CAPTURE_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_
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