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_DEVICE_INFO_IMPL_H_ 12 #define MODULES_VIDEO_CAPTURE_MAIN_SOURCE_DEVICE_INFO_IMPL_H_ 13 14 #include <stdint.h> 15 16 #include <vector> 17 18 #include "api/video/video_rotation.h" 19 #include "modules/video_capture/video_capture.h" 20 #include "modules/video_capture/video_capture_defines.h" 21 #include "rtc_base/synchronization/mutex.h" 22 #include "rtc_base/thread_annotations.h" 23 24 namespace webrtc { 25 namespace videocapturemodule { 26 class DeviceInfoImpl : public VideoCaptureModule::DeviceInfo { 27 public: 28 DeviceInfoImpl(); 29 ~DeviceInfoImpl(void) override; 30 int32_t NumberOfCapabilities(const char* deviceUniqueIdUTF8) override; 31 int32_t GetCapability(const char* deviceUniqueIdUTF8, 32 uint32_t deviceCapabilityNumber, 33 VideoCaptureCapability& capability) override; 34 35 int32_t GetBestMatchedCapability(const char* deviceUniqueIdUTF8, 36 const VideoCaptureCapability& requested, 37 VideoCaptureCapability& resulting) override; 38 int32_t GetOrientation(const char* deviceUniqueIdUTF8, 39 VideoRotation& orientation) override; 40 41 protected: 42 /* Initialize this object*/ 43 44 virtual int32_t Init() = 0; 45 /* 46 * Fills the member variable _captureCapabilities with capabilities for the 47 * given device name. 48 */ 49 virtual int32_t CreateCapabilityMap(const char* deviceUniqueIdUTF8) 50 RTC_EXCLUSIVE_LOCKS_REQUIRED(_apiLock) = 0; 51 52 protected: 53 // Data members 54 typedef std::vector<VideoCaptureCapability> VideoCaptureCapabilities; 55 VideoCaptureCapabilities _captureCapabilities RTC_GUARDED_BY(_apiLock); 56 Mutex _apiLock; 57 char* _lastUsedDeviceName RTC_GUARDED_BY(_apiLock); 58 uint32_t _lastUsedDeviceNameLength RTC_GUARDED_BY(_apiLock); 59 }; 60 } // namespace videocapturemodule 61 } // namespace webrtc 62 #endif // MODULES_VIDEO_CAPTURE_MAIN_SOURCE_DEVICE_INFO_IMPL_H_ 63