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}
52 lines
2.1 KiB
C++
52 lines
2.1 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_VIDEO_CAPTURE_MAIN_SOURCE_LINUX_DEVICE_INFO_LINUX_H_
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#define MODULES_VIDEO_CAPTURE_MAIN_SOURCE_LINUX_DEVICE_INFO_LINUX_H_
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#include <stdint.h>
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#include "modules/video_capture/device_info_impl.h"
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namespace webrtc {
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namespace videocapturemodule {
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class DeviceInfoLinux : public DeviceInfoImpl {
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public:
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DeviceInfoLinux();
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~DeviceInfoLinux() override;
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uint32_t NumberOfDevices() override;
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int32_t GetDeviceName(uint32_t deviceNumber,
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char* deviceNameUTF8,
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uint32_t deviceNameLength,
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char* deviceUniqueIdUTF8,
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uint32_t deviceUniqueIdUTF8Length,
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char* productUniqueIdUTF8 = 0,
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uint32_t productUniqueIdUTF8Length = 0) override;
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/*
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* Fills the membervariable _captureCapabilities with capabilites for the
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* given device name.
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*/
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int32_t CreateCapabilityMap(const char* deviceUniqueIdUTF8) override
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RTC_EXCLUSIVE_LOCKS_REQUIRED(_apiLock);
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int32_t DisplayCaptureSettingsDialogBox(const char* /*deviceUniqueIdUTF8*/,
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const char* /*dialogTitleUTF8*/,
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void* /*parentWindow*/,
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uint32_t /*positionX*/,
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uint32_t /*positionY*/) override;
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int32_t FillCapabilities(int fd) RTC_EXCLUSIVE_LOCKS_REQUIRED(_apiLock);
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int32_t Init() override;
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private:
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bool IsDeviceNameMatches(const char* name, const char* deviceUniqueIdUTF8);
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};
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} // namespace videocapturemodule
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} // namespace webrtc
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#endif // MODULES_VIDEO_CAPTURE_MAIN_SOURCE_LINUX_DEVICE_INFO_LINUX_H_
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