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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/include/video_capture.h"
     17 #include "webrtc/modules/video_capture/video_capture_delay.h"
     18 #include "webrtc/system_wrappers/interface/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(
     40         const char* deviceUniqueIdUTF8,
     41         VideoCaptureRotation& orientation);
     42 
     43 protected:
     44     /* Initialize this object*/
     45 
     46     virtual int32_t Init()=0;
     47     /*
     48      * Fills the member variable _captureCapabilities with capabilities for the given device name.
     49      */
     50     virtual int32_t CreateCapabilityMap(const char* deviceUniqueIdUTF8)=0;
     51 
     52     /* Returns the expected Capture delay*/
     53     int32_t GetExpectedCaptureDelay(const DelayValues delayValues[],
     54                                     const uint32_t sizeOfDelayValues,
     55                                     const char* productId,
     56                                     const uint32_t width,
     57                                     const uint32_t height);
     58 protected:
     59     // Data members
     60     int32_t _id;
     61     typedef std::vector<VideoCaptureCapability> VideoCaptureCapabilities;
     62     VideoCaptureCapabilities _captureCapabilities;
     63     RWLockWrapper& _apiLock;
     64     char* _lastUsedDeviceName;
     65     uint32_t _lastUsedDeviceNameLength;
     66 };
     67 }  // namespace videocapturemodule
     68 }  // namespace webrtc
     69 #endif // WEBRTC_MODULES_VIDEO_CAPTURE_MAIN_SOURCE_DEVICE_INFO_IMPL_H_
     70