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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef DOM_MEDIA_SYSTEMSERVICES_OBJC_VIDEO_CAPTURE_VIDEO_CAPTURE2_H_
#define DOM_MEDIA_SYSTEMSERVICES_OBJC_VIDEO_CAPTURE_VIDEO_CAPTURE2_H_
#import "components/capturer/RTCCameraVideoCapturer.h"
#include "api/scoped_refptr.h"
#include "api/sequence_checker.h"
#include "modules/video_capture/video_capture_impl.h"
#include "mozilla/Maybe.h"
#include "PerformanceRecorder.h"
@class VideoCaptureAdapter;
namespace webrtc::videocapturemodule {
/**
* VideoCaptureImpl implementation of the libwebrtc ios/mac sdk camera backend.
* Single threaded except for OnFrame() that happens on a platform callback thread.
*/
class VideoCaptureAvFoundation : public VideoCaptureImpl {
public:
VideoCaptureAvFoundation(AVCaptureDevice* _Nonnull aDevice);
virtual ~VideoCaptureAvFoundation();
static rtc::scoped_refptr<VideoCaptureModule> Create(const char* _Nullable aDeviceUniqueIdUTF8);
// Implementation of VideoCaptureImpl. Single threaded.
// Starts capturing synchronously. Idempotent. If an existing capture is live and another
// capability is requested we'll restart the underlying backend with the new capability.
int32_t StartCapture(const VideoCaptureCapability& aCapability) MOZ_EXCLUDES(api_lock_) override;
// Stops capturing synchronously. Idempotent.
int32_t StopCapture() MOZ_EXCLUDES(api_lock_) override;
bool CaptureStarted() MOZ_EXCLUDES(api_lock_) override;
int32_t CaptureSettings(VideoCaptureCapability& aSettings) override;
// Callback. This can be called on any thread.
int32_t OnFrame(__strong RTCVideoFrame* _Nonnull aFrame) MOZ_EXCLUDES(api_lock_);
void SetTrackingId(uint32_t aTrackingIdProcId) MOZ_EXCLUDES(api_lock_) override;
// Registers the current thread with the profiler if not already registered.
void MaybeRegisterCallbackThread();
private:
// Control thread checker.
SequenceChecker mChecker;
AVCaptureDevice* _Nonnull const mDevice RTC_GUARDED_BY(mChecker);
VideoCaptureAdapter* _Nonnull const mAdapter RTC_GUARDED_BY(mChecker);
RTCCameraVideoCapturer* _Nonnull const mCapturer RTC_GUARDED_BY(mChecker);
// If capture has started, this is the capability it was started for. Written on the mChecker
// thread only.
mozilla::Maybe<VideoCaptureCapability> mCapability MOZ_GUARDED_BY(api_lock_);
// The image type that mCapability maps to. Set in lockstep with mCapability.
mozilla::Maybe<mozilla::CaptureStage::ImageType> mImageType MOZ_GUARDED_BY(api_lock_);
// Id string uniquely identifying this capture source. Written on the mChecker thread only.
mozilla::Maybe<mozilla::TrackingId> mTrackingId MOZ_GUARDED_BY(api_lock_);
// Adds frame specific markers to the profiler while mTrackingId is set. Callback thread only.
mozilla::PerformanceRecorderMulti<mozilla::CaptureStage> mCaptureRecorder;
mozilla::PerformanceRecorderMulti<mozilla::CopyVideoStage> mConversionRecorder;
std::atomic<ProfilerThreadId> mCallbackThreadId;
};
} // namespace webrtc::videocapturemodule
@interface VideoCaptureAdapter : NSObject <RTCVideoCapturerDelegate> {
webrtc::Mutex _mutex;
webrtc::videocapturemodule::VideoCaptureAvFoundation* _Nullable _capturer RTC_GUARDED_BY(_mutex);
}
- (void)setCapturer:(webrtc::videocapturemodule::VideoCaptureAvFoundation* _Nullable)capturer;
@end
#endif
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