| // 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. |
| |
| // Implementation of a VideoCaptureDeviceFactory class for Windows platforms. |
| |
| #ifndef MEDIA_CAPTURE_VIDEO_WIN_VIDEO_CAPTURE_DEVICE_FACTORY_WIN_H_ |
| #define MEDIA_CAPTURE_VIDEO_WIN_VIDEO_CAPTURE_DEVICE_FACTORY_WIN_H_ |
| |
| #include <mfidl.h> |
| #include <windows.devices.enumeration.h> |
| |
| #include "base/macros.h" |
| #include "base/threading/thread.h" |
| #include "media/capture/video/video_capture_device_factory.h" |
| |
| namespace media { |
| |
| using ABI::Windows::Foundation::IAsyncOperation; |
| using ABI::Windows::Devices::Enumeration::DeviceInformationCollection; |
| |
| // Extension of VideoCaptureDeviceFactory to create and manipulate Windows |
| // devices, via either DirectShow or MediaFoundation APIs. |
| class CAPTURE_EXPORT VideoCaptureDeviceFactoryWin |
| : public VideoCaptureDeviceFactory { |
| public: |
| static bool PlatformSupportsMediaFoundation(); |
| |
| VideoCaptureDeviceFactoryWin(); |
| ~VideoCaptureDeviceFactoryWin() override; |
| |
| using MFEnumDeviceSourcesFunc = decltype(&MFEnumDeviceSources); |
| using DirectShowEnumDevicesFunc = |
| base::RepeatingCallback<HRESULT(IEnumMoniker**)>; |
| using GetSupportedFormatsFunc = |
| base::RepeatingCallback<void(const VideoCaptureDeviceDescriptor&, |
| VideoCaptureFormats*)>; |
| |
| std::unique_ptr<VideoCaptureDevice> CreateDevice( |
| const VideoCaptureDeviceDescriptor& device_descriptor) override; |
| void GetDeviceDescriptors( |
| VideoCaptureDeviceDescriptors* device_descriptors) override; |
| void GetSupportedFormats( |
| const VideoCaptureDeviceDescriptor& device_descriptor, |
| VideoCaptureFormats* supported_formats) override; |
| void GetCameraLocationsAsync( |
| std::unique_ptr<VideoCaptureDeviceDescriptors> device_descriptors, |
| DeviceDescriptorsCallback result_callback) override; |
| |
| void set_use_media_foundation_for_testing(bool use) { |
| use_media_foundation_ = use; |
| } |
| void set_mf_enum_device_sources_func_for_testing( |
| MFEnumDeviceSourcesFunc func) { |
| mf_enum_device_sources_func_ = func; |
| } |
| void set_direct_show_enum_devices_func_for_testing( |
| DirectShowEnumDevicesFunc func) { |
| direct_show_enum_devices_func_ = func; |
| } |
| void set_mf_get_supported_formats_func_for_testing( |
| GetSupportedFormatsFunc func) { |
| mf_get_supported_formats_func_ = func; |
| } |
| void set_direct_show_get_supported_formats_func_for_testing( |
| GetSupportedFormatsFunc func) { |
| direct_show_get_supported_formats_func_ = func; |
| } |
| |
| private: |
| void EnumerateDevicesUWP( |
| std::unique_ptr<VideoCaptureDeviceDescriptors> device_descriptors, |
| DeviceDescriptorsCallback result_callback); |
| void FoundAllDevicesUWP( |
| std::unique_ptr<VideoCaptureDeviceDescriptors> device_descriptors, |
| DeviceDescriptorsCallback result_callback, |
| IAsyncOperation<DeviceInformationCollection*>* operation); |
| void DeviceInfoReady( |
| std::unique_ptr<VideoCaptureDeviceDescriptors> device_descriptors, |
| DeviceDescriptorsCallback result_callback); |
| void GetDeviceDescriptorsMediaFoundation( |
| VideoCaptureDeviceDescriptors* device_descriptors); |
| void AugmentDescriptorListWithDirectShowOnlyDevices( |
| VideoCaptureDeviceDescriptors* device_descriptors); |
| bool EnumerateVideoDevicesMediaFoundation( |
| const std::vector<std::pair<GUID, GUID>>& attributes_data, |
| IMFActivate*** devices, |
| UINT32* count); |
| void GetDeviceDescriptorsDirectShow( |
| VideoCaptureDeviceDescriptors* device_descriptors); |
| int GetNumberOfSupportedFormats(const VideoCaptureDeviceDescriptor& device); |
| void GetApiSpecificSupportedFormats( |
| const VideoCaptureDeviceDescriptor& device, |
| VideoCaptureFormats* formats); |
| |
| bool use_media_foundation_; |
| // In production code, when Media Foundation libraries are available, |
| // |mf_enum_device_sources_func_| points to MFEnumDeviceSources. It enables |
| // mock of Media Foundation API in unit tests. |
| MFEnumDeviceSourcesFunc mf_enum_device_sources_func_ = nullptr; |
| DirectShowEnumDevicesFunc direct_show_enum_devices_func_; |
| |
| GetSupportedFormatsFunc mf_get_supported_formats_func_; |
| GetSupportedFormatsFunc direct_show_get_supported_formats_func_; |
| |
| // For calling WinRT methods on a COM initiated thread. |
| base::Thread com_thread_; |
| scoped_refptr<base::SingleThreadTaskRunner> origin_task_runner_; |
| std::unordered_set<IAsyncOperation<DeviceInformationCollection*>*> async_ops_; |
| base::WeakPtrFactory<VideoCaptureDeviceFactoryWin> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(VideoCaptureDeviceFactoryWin); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_CAPTURE_VIDEO_WIN_VIDEO_CAPTURE_DEVICE_FACTORY_WIN_H_ |