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/*
* Copyright (C) 2022 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(GPU_PROCESS) && PLATFORM(COCOA) && ENABLE(VIDEO)
#include "IPCSemaphore.h"
#include "RemoteVideoFrameIdentifier.h"
#include "SharedMemory.h"
#include <WebCore/IntSize.h>
#include <WebCore/ProcessIdentity.h>
#include <wtf/MediaTime.h>
#include <wtf/RefPtr.h>
#include <wtf/RetainPtr.h>
#include <wtf/UniqueRef.h>
typedef struct __CVBuffer* CVPixelBufferRef;
typedef struct __CVPixelBufferPool* CVPixelBufferPoolRef;
namespace WebCore {
class SharedVideoFrameInfo;
class VideoFrame;
enum class VideoFrameRotation : uint16_t;
}
namespace webrtc {
class VideoFrame;
class VideoFrameBuffer;
}
namespace WebKit {
class RemoteVideoFrameObjectHeap;
struct SharedVideoFrame {
MediaTime time;
bool mirrored { false };
WebCore::VideoFrameRotation rotation { };
using Buffer = std::variant<std::nullptr_t, RemoteVideoFrameReadReference, MachSendRight, WebCore::IntSize>;
Buffer buffer;
template<class Encoder> void encode(Encoder&) &&;
template<class Decoder> static std::optional<SharedVideoFrame> decode(Decoder&);
};
class SharedVideoFrameWriter {
WTF_MAKE_FAST_ALLOCATED;
public:
SharedVideoFrameWriter();
std::optional<SharedVideoFrame> write(const WebCore::VideoFrame&, const Function<void(IPC::Semaphore&)>&, const Function<void(SharedMemory::Handle&&)>&);
std::optional<SharedVideoFrame::Buffer> writeBuffer(CVPixelBufferRef, const Function<void(IPC::Semaphore&)>&, const Function<void(SharedMemory::Handle&&)>&, bool canSendIOSurface = true);
#if USE(LIBWEBRTC)
std::optional<SharedVideoFrame::Buffer> writeBuffer(const webrtc::VideoFrame&, const Function<void(IPC::Semaphore&)>&, const Function<void(SharedMemory::Handle&&)>&);
#endif
std::optional<SharedVideoFrame::Buffer> writeBuffer(const WebCore::VideoFrame&, const Function<void(IPC::Semaphore&)>&, const Function<void(SharedMemory::Handle&&)>&);
void disable();
bool isDisabled() const { return m_isDisabled; }
private:
static constexpr Seconds defaultTimeout = 3_s;
bool wait(const Function<void(IPC::Semaphore&)>&);
bool allocateStorage(size_t, const Function<void(SharedMemory::Handle&&)>&);
bool prepareWriting(const WebCore::SharedVideoFrameInfo&, const Function<void(IPC::Semaphore&)>&, const Function<void(SharedMemory::Handle&&)>&);
#if USE(LIBWEBRTC)
std::optional<SharedVideoFrame::Buffer> writeBuffer(webrtc::VideoFrameBuffer&, const Function<void(IPC::Semaphore&)>&, const Function<void(SharedMemory::Handle&&)>&);
#endif
void signalInCaseOfError();
UniqueRef<IPC::Semaphore> m_semaphore;
RefPtr<SharedMemory> m_storage;
bool m_isSemaphoreInUse { false };
bool m_isDisabled { false };
bool m_shouldSignalInCaseOfError { false };
};
class SharedVideoFrameReader {
WTF_MAKE_FAST_ALLOCATED;
public:
~SharedVideoFrameReader();
enum class UseIOSurfaceBufferPool : bool { No, Yes };
explicit SharedVideoFrameReader(RefPtr<RemoteVideoFrameObjectHeap>&&, const WebCore::ProcessIdentity& = { }, UseIOSurfaceBufferPool = UseIOSurfaceBufferPool::Yes);
SharedVideoFrameReader();
void setSemaphore(IPC::Semaphore&& semaphore) { m_semaphore = WTFMove(semaphore); }
bool setSharedMemory(SharedMemory::Handle&&);
RefPtr<WebCore::VideoFrame> read(SharedVideoFrame&&);
RetainPtr<CVPixelBufferRef> readBuffer(SharedVideoFrame::Buffer&&);
private:
CVPixelBufferPoolRef pixelBufferPool(const WebCore::SharedVideoFrameInfo&);
RetainPtr<CVPixelBufferRef> readBufferFromSharedMemory();
RefPtr<RemoteVideoFrameObjectHeap> m_objectHeap;
WebCore::ProcessIdentity m_resourceOwner;
UseIOSurfaceBufferPool m_useIOSurfaceBufferPool { UseIOSurfaceBufferPool::No };
IPC::Semaphore m_semaphore;
RefPtr<SharedMemory> m_storage;
RetainPtr<CVPixelBufferPoolRef> m_bufferPool;
OSType m_bufferPoolType { 0 };
uint32_t m_bufferPoolWidth { 0 };
uint32_t m_bufferPoolHeight { 0 };
WebCore::IntSize m_blackFrameSize;
RetainPtr<CVPixelBufferRef> m_blackFrame;
};
template<class Encoder> void SharedVideoFrame::encode(Encoder& encoder) &&
{
encoder << time;
encoder << mirrored;
encoder << rotation;
encoder << WTFMove(buffer);
}
template<class Decoder> std::optional<SharedVideoFrame> SharedVideoFrame::decode(Decoder& decoder)
{
SharedVideoFrame frame;
if (!decoder.decode(frame.time))
return { };
if (!decoder.decode(frame.mirrored))
return { };
if (!decoder.decode(frame.rotation))
return { };
if (!decoder.decode(frame.buffer))
return { };
return frame;
}
}
#endif
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