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128 lines
3.3 KiB
C++
128 lines
3.3 KiB
C++
/*
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* Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/OwnPtr.h>
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#include <LibCore/IOSurface.h>
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#if !defined(AK_OS_MACOS)
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static_assert(false, "This file must only be used for macOS");
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#endif
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#import <IOSurface/IOSurface.h>
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namespace Core {
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template<typename T>
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class RefAutoRelease {
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AK_MAKE_NONCOPYABLE(RefAutoRelease);
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public:
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RefAutoRelease(T ref)
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: m_ref(ref)
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{
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}
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~RefAutoRelease()
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{
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if (m_ref)
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CFRelease(m_ref);
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m_ref = nullptr;
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}
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T ref() const { return m_ref; }
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private:
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T m_ref { nullptr };
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};
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struct IOSurfaceHandle::IOSurfaceRefWrapper {
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IOSurfaceRef ref;
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};
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IOSurfaceHandle::IOSurfaceHandle(OwnPtr<IOSurfaceRefWrapper>&& ref_wrapper)
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: m_ref_wrapper(move(ref_wrapper))
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{
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}
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IOSurfaceHandle::IOSurfaceHandle(IOSurfaceHandle&& other) = default;
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IOSurfaceHandle& IOSurfaceHandle::operator=(IOSurfaceHandle&& other) = default;
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IOSurfaceHandle::~IOSurfaceHandle()
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{
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if (m_ref_wrapper)
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CFRelease(m_ref_wrapper->ref);
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}
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IOSurfaceHandle IOSurfaceHandle::create(int width, int height)
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{
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size_t bytes_per_element = 4;
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uint32_t pixel_format = 'BGRA';
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RefAutoRelease<CFNumberRef> width_number = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &width);
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RefAutoRelease<CFNumberRef> height_number = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &height);
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RefAutoRelease<CFNumberRef> bytes_per_element_number = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &bytes_per_element);
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RefAutoRelease<CFNumberRef> pixel_format_number = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &pixel_format);
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CFMutableDictionaryRef props = CFDictionaryCreateMutable(kCFAllocatorDefault,
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0,
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&kCFTypeDictionaryKeyCallBacks,
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&kCFTypeDictionaryValueCallBacks);
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CFDictionarySetValue(props, kIOSurfaceWidth, width_number.ref());
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CFDictionarySetValue(props, kIOSurfaceHeight, height_number.ref());
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CFDictionarySetValue(props, kIOSurfaceBytesPerElement, bytes_per_element_number.ref());
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CFDictionarySetValue(props, kIOSurfacePixelFormat, pixel_format_number.ref());
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auto* ref = IOSurfaceCreate(props);
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VERIFY(ref);
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return IOSurfaceHandle(make<IOSurfaceRefWrapper>(ref));
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}
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MachPort IOSurfaceHandle::create_mach_port() const
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{
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auto port = IOSurfaceCreateMachPort(m_ref_wrapper->ref);
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return MachPort::adopt_right(port, MachPort::PortRight::Send);
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}
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IOSurfaceHandle IOSurfaceHandle::from_mach_port(MachPort const& port)
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{
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// NOTE: This call does not destroy the port
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auto* ref = IOSurfaceLookupFromMachPort(port.port());
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VERIFY(ref);
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return IOSurfaceHandle(make<IOSurfaceRefWrapper>(ref));
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}
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size_t IOSurfaceHandle::width() const
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{
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return IOSurfaceGetWidth(m_ref_wrapper->ref);
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}
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size_t IOSurfaceHandle::height() const
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{
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return IOSurfaceGetHeight(m_ref_wrapper->ref);
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}
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size_t IOSurfaceHandle::bytes_per_element() const
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{
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return IOSurfaceGetBytesPerElement(m_ref_wrapper->ref);
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}
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size_t IOSurfaceHandle::bytes_per_row() const
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{
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return IOSurfaceGetBytesPerRow(m_ref_wrapper->ref);
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}
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void* IOSurfaceHandle::data() const
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{
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return IOSurfaceGetBaseAddress(m_ref_wrapper->ref);
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}
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void* IOSurfaceHandle::core_foundation_pointer() const
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{
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return m_ref_wrapper->ref;
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}
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}
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