eee10391ca
This annotates all unannotated members in VideoCaptureImpl and its
subclasses with either of:
- api_checker_: access on the api thread only
- capture_checker_: access in callbacks/on the capture thread while
capture is active, on the api thread otherwise
- a Mutex if it is already protected by it
Bug: webrtc:15181
Change-Id: I5084e7752a4716c29b85a9b403a88696f66d811f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/305647
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Per Kjellander <perkj@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40335}
64 lines
2.1 KiB
C++
64 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_LINUX_VIDEO_CAPTURE_V4L2_H_
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#define MODULES_VIDEO_CAPTURE_LINUX_VIDEO_CAPTURE_V4L2_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <memory>
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#include "modules/video_capture/video_capture_defines.h"
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#include "modules/video_capture/video_capture_impl.h"
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#include "rtc_base/platform_thread.h"
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#include "rtc_base/synchronization/mutex.h"
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namespace webrtc {
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namespace videocapturemodule {
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class VideoCaptureModuleV4L2 : public VideoCaptureImpl {
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public:
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VideoCaptureModuleV4L2();
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~VideoCaptureModuleV4L2() override;
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int32_t Init(const char* deviceUniqueId);
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int32_t StartCapture(const VideoCaptureCapability& capability) override;
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int32_t StopCapture() override;
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bool CaptureStarted() override;
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int32_t CaptureSettings(VideoCaptureCapability& settings) override;
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private:
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enum { kNoOfV4L2Bufffers = 4 };
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static void CaptureThread(void*);
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bool CaptureProcess();
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bool AllocateVideoBuffers() RTC_EXCLUSIVE_LOCKS_REQUIRED(capture_lock_);
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bool DeAllocateVideoBuffers() RTC_EXCLUSIVE_LOCKS_REQUIRED(capture_lock_);
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rtc::PlatformThread _captureThread RTC_GUARDED_BY(api_checker_);
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Mutex capture_lock_ RTC_ACQUIRED_BEFORE(api_lock_);
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bool quit_ RTC_GUARDED_BY(capture_lock_);
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int32_t _deviceId RTC_GUARDED_BY(api_checker_);
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int32_t _deviceFd RTC_GUARDED_BY(capture_checker_);
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int32_t _buffersAllocatedByDevice RTC_GUARDED_BY(capture_lock_);
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VideoCaptureCapability configured_capability_
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RTC_GUARDED_BY(capture_checker_);
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bool _captureStarted RTC_GUARDED_BY(capture_checker_);
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struct Buffer {
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void* start;
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size_t length;
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};
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Buffer* _pool RTC_GUARDED_BY(capture_lock_);
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};
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} // namespace videocapturemodule
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} // namespace webrtc
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#endif // MODULES_VIDEO_CAPTURE_LINUX_VIDEO_CAPTURE_V4L2_H_
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