Revision control
++ // Copyright (C) 2022 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++
++ #ifndef QAVFSAMPLEBUFFERDELEGATE_P_H
++ #define QAVFSAMPLEBUFFERDELEGATE_P_H
++
++ //
++ // W A R N I N G
++ // -------------
++ //
++ // This file is not part of the Qt API. It exists purely as an
++ // implementation detail. This header file may change from version to
++ // version without notice, or even be removed.
++ //
++ // We mean it.
++ //
++
++ #import <AVFoundation/AVFoundation.h>
++ #import <CoreVideo/CoreVideo.h>
++
++ #include <QtCore/qtconfigmacros.h>
++ #include <QtCore/qtypes.h>
++
++ #include <QtMultimedia/private/qvideotransformation_p.h>
++
++ #include <functional>
++ #include <memory>
++
++ QT_BEGIN_NAMESPACE
++
++ class QAVSampleBufferDelegateFrameHandler;
++ class QVideoFrame;
++ namespace QFFmpeg {
++ class HWAccel;
++
++ struct QAVFSampleBufferDelegateTransform {
++ VideoTransformation surfaceTransform;
++ VideoTransformation presentationTransform;
++ };
++
++ using QAVFSampleBufferDelegateTransformProvider = std::function<QAVFSampleBufferDelegateTransform(
++ const AVCaptureConnection *)>;
++
++ } // namespace QFFmpeg
++
++ QT_END_NAMESPACE
++
++ // This type is used by screencapture and camera-capture.
++ @interface QT_MANGLE_NAMESPACE(QAVFSampleBufferDelegate) : NSObject <AVCaptureVideoDataOutputSampleBufferDelegate>
++
++ // These parameters are called during the captureOutput callback.
++ //
++ // The handler parameter is called at the end, when the QVideoFrame is constructed and configured.
++ //
++ // The modifier is called to modify the frame before it is finally sent to the handler.
++ // This can be used to i.e add metadata to the frame.
++ - (instancetype)initWithFrameHandler:(std::function<void(const QVideoFrame &)>)handler;
++
++ // Clears the frame handler, so future samples are discarded.
++ // Not thread safe.
++ - (void)discardFutureSamples;
++
++ // Allows the object to update the QVideoFrame metadata based on rotatation and mirroring.
++ // This does NOT rotate the pixel buffer.
++ - (void)setTransformationProvider:
++ (const QT_PREPEND_NAMESPACE(QFFmpeg::QAVFSampleBufferDelegateTransformProvider) &)provider;
++
++ - (void)captureOutput:(AVCaptureOutput *)captureOutput
++ didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer
++ fromConnection:(AVCaptureConnection *)connection;
++
++ - (void)setHWAccel:(std::unique_ptr<QT_PREPEND_NAMESPACE(QFFmpeg::HWAccel)> &&)accel;
++
++ - (void)setVideoFormatFrameRate:(qreal)frameRate;
++
++ @end
++
++ QT_BEGIN_NAMESPACE
++
++ namespace QFFmpeg {
++
++ using QAVFSampleBufferDelegate = QT_MANGLE_NAMESPACE(QAVFSampleBufferDelegate);
++
++ } // namespace QFFmpeg
++
++ QT_END_NAMESPACE
++
++ #endif