1 /* 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef MODULES_VIDEO_CAPTURE_MAIN_SOURCE_WINDOWS_DEVICE_INFO_DS_H_ 12 #define MODULES_VIDEO_CAPTURE_MAIN_SOURCE_WINDOWS_DEVICE_INFO_DS_H_ 13 14 #include <dshow.h> 15 16 #include "modules/video_capture/device_info_impl.h" 17 #include "modules/video_capture/video_capture_impl.h" 18 19 namespace webrtc { 20 namespace videocapturemodule { 21 struct VideoCaptureCapabilityWindows : public VideoCaptureCapability { 22 uint32_t directShowCapabilityIndex; 23 bool supportFrameRateControl; VideoCaptureCapabilityWindowsVideoCaptureCapabilityWindows24 VideoCaptureCapabilityWindows() { 25 directShowCapabilityIndex = 0; 26 supportFrameRateControl = false; 27 } 28 }; 29 30 class DeviceInfoDS : public DeviceInfoImpl { 31 public: 32 // Factory function. 33 static DeviceInfoDS* Create(); 34 35 DeviceInfoDS(); 36 ~DeviceInfoDS() override; 37 38 int32_t Init() override; 39 uint32_t NumberOfDevices() override; 40 41 /* 42 * Returns the available capture devices. 43 */ 44 int32_t GetDeviceName(uint32_t deviceNumber, 45 char* deviceNameUTF8, 46 uint32_t deviceNameLength, 47 char* deviceUniqueIdUTF8, 48 uint32_t deviceUniqueIdUTF8Length, 49 char* productUniqueIdUTF8, 50 uint32_t productUniqueIdUTF8Length) override; 51 52 /* 53 * Display OS /capture device specific settings dialog 54 */ 55 int32_t DisplayCaptureSettingsDialogBox(const char* deviceUniqueIdUTF8, 56 const char* dialogTitleUTF8, 57 void* parentWindow, 58 uint32_t positionX, 59 uint32_t positionY) override; 60 61 // Windows specific 62 63 /* Gets a capture device filter 64 The user of this API is responsible for releasing the filter when it not 65 needed. 66 */ 67 IBaseFilter* GetDeviceFilter(const char* deviceUniqueIdUTF8, 68 char* productUniqueIdUTF8 = NULL, 69 uint32_t productUniqueIdUTF8Length = 0); 70 71 int32_t GetWindowsCapability( 72 int32_t capabilityIndex, 73 VideoCaptureCapabilityWindows& windowsCapability); 74 75 static void GetProductId(const char* devicePath, 76 char* productUniqueIdUTF8, 77 uint32_t productUniqueIdUTF8Length); 78 79 protected: 80 int32_t GetDeviceInfo(uint32_t deviceNumber, 81 char* deviceNameUTF8, 82 uint32_t deviceNameLength, 83 char* deviceUniqueIdUTF8, 84 uint32_t deviceUniqueIdUTF8Length, 85 char* productUniqueIdUTF8, 86 uint32_t productUniqueIdUTF8Length); 87 88 int32_t CreateCapabilityMap(const char* deviceUniqueIdUTF8) override 89 RTC_EXCLUSIVE_LOCKS_REQUIRED(_apiLock); 90 91 private: 92 ICreateDevEnum* _dsDevEnum; 93 IEnumMoniker* _dsMonikerDevEnum; 94 bool _CoUninitializeIsRequired; 95 std::vector<VideoCaptureCapabilityWindows> _captureCapabilitiesWindows; 96 }; 97 } // namespace videocapturemodule 98 } // namespace webrtc 99 #endif // MODULES_VIDEO_CAPTURE_MAIN_SOURCE_WINDOWS_DEVICE_INFO_DS_H_ 100