| // 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_CAPTURE_VIDEO_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_ |
| #define MEDIA_CAPTURE_VIDEO_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_ |
| |
| #include <mfidl.h> |
| #include <mfreadwrite.h> |
| #include <stdint.h> |
| |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/synchronization/lock.h" |
| #include "base/threading/non_thread_safe.h" |
| #include "base/win/scoped_comptr.h" |
| #include "media/capture/capture_export.h" |
| #include "media/capture/video/video_capture_device.h" |
| |
| interface IMFSourceReader; |
| |
| namespace tracked_objects { |
| class Location; |
| } // namespace tracked_objects |
| |
| namespace media { |
| |
| class MFReaderCallback; |
| |
| const DWORD kFirstVideoStream = |
| static_cast<DWORD>(MF_SOURCE_READER_FIRST_VIDEO_STREAM); |
| |
| class CAPTURE_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, |
| std::unique_ptr<VideoCaptureDevice::Client> client) override; |
| void StopAndDeAllocate() override; |
| |
| // Captured new video data. |
| void OnIncomingCapturedData(const uint8_t* data, |
| int length, |
| int rotation, |
| base::TimeTicks reference_time, |
| base::TimeDelta timestamp); |
| |
| private: |
| void OnError(const tracked_objects::Location& from_here, HRESULT hr); |
| |
| Name name_; |
| base::win::ScopedComPtr<IMFActivate> device_; |
| scoped_refptr<MFReaderCallback> callback_; |
| |
| base::Lock lock_; // Used to guard the below variables. |
| std::unique_ptr<VideoCaptureDevice::Client> client_; |
| base::win::ScopedComPtr<IMFSourceReader> reader_; |
| VideoCaptureFormat capture_format_; |
| bool capture_; |
| |
| DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureDeviceMFWin); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_CAPTURE_VIDEO_WIN_VIDEO_CAPTURE_DEVICE_MF_WIN_H_ |