5b5de21acc
Reader-writer locks helps performance only when there are many concurrent readers, and I would expect that isn't the case for this class. Using a plain mutex reduces complexity. Bug: webrtc:12102 Change-Id: I07c315bcbfc38f1d8befe5395c9ece54c673aeb7 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/190722 Reviewed-by: Magnus Flodman <mflodman@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32547}
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#ifndef MODULES_VIDEO_CAPTURE_MAIN_SOURCE_DEVICE_INFO_IMPL_H_
|
|
#define MODULES_VIDEO_CAPTURE_MAIN_SOURCE_DEVICE_INFO_IMPL_H_
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <vector>
|
|
|
|
#include "api/video/video_rotation.h"
|
|
#include "modules/video_capture/video_capture.h"
|
|
#include "modules/video_capture/video_capture_defines.h"
|
|
#include "rtc_base/synchronization/mutex.h"
|
|
#include "rtc_base/thread_annotations.h"
|
|
|
|
namespace webrtc {
|
|
namespace videocapturemodule {
|
|
class DeviceInfoImpl : public VideoCaptureModule::DeviceInfo {
|
|
public:
|
|
DeviceInfoImpl();
|
|
~DeviceInfoImpl(void) override;
|
|
int32_t NumberOfCapabilities(const char* deviceUniqueIdUTF8) override;
|
|
int32_t GetCapability(const char* deviceUniqueIdUTF8,
|
|
const uint32_t deviceCapabilityNumber,
|
|
VideoCaptureCapability& capability) override;
|
|
|
|
int32_t GetBestMatchedCapability(const char* deviceUniqueIdUTF8,
|
|
const VideoCaptureCapability& requested,
|
|
VideoCaptureCapability& resulting) override;
|
|
int32_t GetOrientation(const char* deviceUniqueIdUTF8,
|
|
VideoRotation& orientation) override;
|
|
|
|
protected:
|
|
/* Initialize this object*/
|
|
|
|
virtual int32_t Init() = 0;
|
|
/*
|
|
* Fills the member variable _captureCapabilities with capabilities for the
|
|
* given device name.
|
|
*/
|
|
virtual int32_t CreateCapabilityMap(const char* deviceUniqueIdUTF8)
|
|
RTC_EXCLUSIVE_LOCKS_REQUIRED(_apiLock) = 0;
|
|
|
|
protected:
|
|
// Data members
|
|
typedef std::vector<VideoCaptureCapability> VideoCaptureCapabilities;
|
|
VideoCaptureCapabilities _captureCapabilities RTC_GUARDED_BY(_apiLock);
|
|
Mutex _apiLock;
|
|
char* _lastUsedDeviceName RTC_GUARDED_BY(_apiLock);
|
|
uint32_t _lastUsedDeviceNameLength RTC_GUARDED_BY(_apiLock);
|
|
};
|
|
} // namespace videocapturemodule
|
|
} // namespace webrtc
|
|
#endif // MODULES_VIDEO_CAPTURE_MAIN_SOURCE_DEVICE_INFO_IMPL_H_
|