gecko-dev/gfx/layers/MacIOSurfaceImage.cpp

56 строки
1.8 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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/. */
#include "MacIOSurfaceImage.h"
#include "mozilla/layers/CompositableClient.h"
#include "mozilla/layers/CompositableForwarder.h"
#include "mozilla/layers/MacIOSurfaceTextureClientOGL.h"
using namespace mozilla;
using namespace mozilla::layers;
TextureClient*
MacIOSurfaceImage::GetTextureClient(CompositableClient* aClient)
{
if (!mTextureClient) {
mTextureClient = MacIOSurfaceTextureClientOGL::Create(aClient->GetForwarder(),
TextureFlags::DEFAULT,
mSurface);
}
return mTextureClient;
}
already_AddRefed<gfx::SourceSurface>
MacIOSurfaceImage::GetAsSourceSurface()
{
mSurface->Lock();
size_t bytesPerRow = mSurface->GetBytesPerRow();
size_t ioWidth = mSurface->GetDevicePixelWidth();
size_t ioHeight = mSurface->GetDevicePixelHeight();
unsigned char* ioData = (unsigned char*)mSurface->GetBaseAddress();
RefPtr<gfx::DataSourceSurface> dataSurface
= gfx::Factory::CreateDataSourceSurface(gfx::IntSize(ioWidth, ioHeight), gfx::SurfaceFormat::B8G8R8A8);
if (NS_WARN_IF(!dataSurface)) {
return nullptr;
}
gfx::DataSourceSurface::MappedSurface mappedSurface;
if (!dataSurface->Map(gfx::DataSourceSurface::WRITE, &mappedSurface))
return nullptr;
for (size_t i = 0; i < ioHeight; ++i) {
memcpy(mappedSurface.mData + i * mappedSurface.mStride,
ioData + i * bytesPerRow,
ioWidth * 4);
}
dataSurface->Unmap();
mSurface->Unlock();
return dataSurface.forget();
}