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/*
* Copyright (C) 2017-2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if ENABLE(MEDIA_STREAM) && PLATFORM(MAC)
#include "DisplayCaptureSourceCocoa.h"
#include <CoreGraphics/CGDisplayConfiguration.h>
#include <CoreGraphics/CGDisplayStream.h>
#include <wtf/BlockPtr.h>
#include <wtf/Lock.h>
#include <wtf/OSObjectPtr.h>
typedef struct __CVBuffer *CVPixelBufferRef;
typedef struct opaqueCMSampleBuffer *CMSampleBufferRef;
namespace WebCore {
class CGDisplayStreamCaptureSource : public DisplayCaptureSourceCocoa::Capturer, public CanMakeWeakPtr<CGDisplayStreamCaptureSource> {
public:
explicit CGDisplayStreamCaptureSource() = default;
virtual ~CGDisplayStreamCaptureSource();
protected:
using FrameAvailableCallback = void (^)(CGDisplayStreamFrameStatus, uint64_t, IOSurfaceRef, CGDisplayStreamUpdateRef);
virtual RetainPtr<CGDisplayStreamRef> createDisplayStream() = 0;
virtual bool checkDisplayStream() { return true; }
CGDisplayStreamRef displayStream() const { return m_displayStream.get(); }
void invalidateDisplayStream() { m_displayStream = nullptr; }
FrameAvailableCallback frameAvailableHandler();
dispatch_queue_t captureQueue();
uint32_t width() const { return m_width; }
uint32_t height() const { return m_height; }
float frameRate() const { return m_frameRate; }
private:
static void displayReconfigurationCallBack(CGDirectDisplayID, CGDisplayChangeSummaryFlags, void*);
// DisplayCaptureSourceCocoa::Capturer
bool start() final;
void stop() final;
DisplayCaptureSourceCocoa::DisplayFrameType generateFrame() final;
void commitConfiguration(const RealtimeMediaSourceSettings&) final;
void displayWasReconfigured(CGDirectDisplayID, CGDisplayChangeSummaryFlags);
bool startDisplayStream();
void newFrame(CGDisplayStreamFrameStatus, RetainPtr<IOSurfaceRef>&&);
RetainPtr<IOSurfaceRef> m_currentFrame;
RetainPtr<CGDisplayStreamRef> m_displayStream;
OSObjectPtr<dispatch_queue_t> m_captureQueue;
BlockPtr<void(CGDisplayStreamFrameStatus, uint64_t, IOSurfaceRef, CGDisplayStreamUpdateRef)> m_frameAvailableHandler;
uint32_t m_width { 0 };
uint32_t m_height { 0 };
float m_frameRate { 0 };
bool m_isRunning { false };
bool m_observingDisplayChanges { false };
};
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM) && PLATFORM(MAC)