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      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 WEBRTC_MODULES_VIDEO_CAPTURE_MAIN_SOURCE_DEVICE_INFO_IMPL_H_
     12 #define WEBRTC_MODULES_VIDEO_CAPTURE_MAIN_SOURCE_DEVICE_INFO_IMPL_H_
     13 
     14 #include <vector>
     15 
     16 #include "webrtc/modules/video_capture/video_capture.h"
     17 #include "webrtc/modules/video_capture/video_capture_delay.h"
     18 #include "webrtc/system_wrappers/include/rw_lock_wrapper.h"
     19 
     20 namespace webrtc
     21 {
     22 namespace videocapturemodule
     23 {
     24 class DeviceInfoImpl: public VideoCaptureModule::DeviceInfo
     25 {
     26 public:
     27     DeviceInfoImpl(const int32_t id);
     28     virtual ~DeviceInfoImpl(void);
     29     virtual int32_t NumberOfCapabilities(const char* deviceUniqueIdUTF8);
     30     virtual int32_t GetCapability(
     31         const char* deviceUniqueIdUTF8,
     32         const uint32_t deviceCapabilityNumber,
     33         VideoCaptureCapability& capability);
     34 
     35     virtual int32_t GetBestMatchedCapability(
     36         const char* deviceUniqueIdUTF8,
     37         const VideoCaptureCapability& requested,
     38         VideoCaptureCapability& resulting);
     39     virtual int32_t GetOrientation(const char* deviceUniqueIdUTF8,
     40                                    VideoRotation& orientation);
     41 
     42 protected:
     43     /* Initialize this object*/
     44 
     45     virtual int32_t Init()=0;
     46     /*
     47      * Fills the member variable _captureCapabilities with capabilities for the given device name.
     48      */
     49     virtual int32_t CreateCapabilityMap(const char* deviceUniqueIdUTF8)=0;
     50 
     51     /* Returns the expected Capture delay*/
     52     int32_t GetExpectedCaptureDelay(const DelayValues delayValues[],
     53                                     const uint32_t sizeOfDelayValues,
     54                                     const char* productId,
     55                                     const uint32_t width,
     56                                     const uint32_t height);
     57 protected:
     58     // Data members
     59     int32_t _id;
     60     typedef std::vector<VideoCaptureCapability> VideoCaptureCapabilities;
     61     VideoCaptureCapabilities _captureCapabilities;
     62     RWLockWrapper& _apiLock;
     63     char* _lastUsedDeviceName;
     64     uint32_t _lastUsedDeviceNameLength;
     65 };
     66 }  // namespace videocapturemodule
     67 }  // namespace webrtc
     68 #endif // WEBRTC_MODULES_VIDEO_CAPTURE_MAIN_SOURCE_DEVICE_INFO_IMPL_H_
     69