gecko-dev/gfx/layers/MacIOSurfaceImage.cpp

104 строки
3.5 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"
#include "YCbCrUtils.h"
using namespace mozilla;
using namespace mozilla::layers;
using namespace mozilla::gfx;
TextureClient*
MacIOSurfaceImage::GetTextureClient(CompositableClient* aClient)
{
if (!mTextureClient) {
mTextureClient = MacIOSurfaceTextureClientOGL::Create(aClient->GetForwarder(),
TextureFlags::DEFAULT,
mSurface);
}
return mTextureClient;
}
already_AddRefed<SourceSurface>
MacIOSurfaceImage::GetAsSourceSurface()
{
RefPtr<DataSourceSurface> dataSurface;
mSurface->Lock();
size_t bytesPerRow = mSurface->GetBytesPerRow();
size_t ioWidth = mSurface->GetDevicePixelWidth();
size_t ioHeight = mSurface->GetDevicePixelHeight();
SurfaceFormat format = mSurface->GetFormat() == SurfaceFormat::NV12 ? SurfaceFormat::B8G8R8X8 : SurfaceFormat::B8G8R8A8;
dataSurface = Factory::CreateDataSourceSurface(IntSize(ioWidth, ioHeight), format);
if (NS_WARN_IF(!dataSurface)) {
return nullptr;
}
DataSourceSurface::MappedSurface mappedSurface;
if (!dataSurface->Map(DataSourceSurface::WRITE, &mappedSurface))
return nullptr;
if (mSurface->GetFormat() == SurfaceFormat::NV12) {
if (mSurface->GetDevicePixelWidth() > PlanarYCbCrImage::MAX_DIMENSION ||
mSurface->GetDevicePixelHeight() > PlanarYCbCrImage::MAX_DIMENSION) {
return nullptr;
}
/* Extract and separate the CbCr planes */
size_t cbCrStride = mSurface->GetBytesPerRow(1);
size_t cbCrWidth = mSurface->GetDevicePixelWidth(1);
size_t cbCrHeight = mSurface->GetDevicePixelHeight(1);
nsAutoArrayPtr<uint8_t> cbPlane(new uint8_t[cbCrWidth * cbCrHeight]);
nsAutoArrayPtr<uint8_t> crPlane(new uint8_t[cbCrWidth * cbCrHeight]);
uint8_t* src = (uint8_t*)mSurface->GetBaseAddressOfPlane(1);
uint8_t* cbDest = cbPlane;
uint8_t* crDest = crPlane;
for (size_t i = 0; i < cbCrHeight; i++) {
uint8_t* rowSrc = src + cbCrStride * i;
for (size_t j = 0; j < cbCrWidth; j++) {
*cbDest = *rowSrc;
cbDest++;
rowSrc++;
*crDest = *rowSrc;
crDest++;
rowSrc++;
}
}
/* Convert to RGB */
PlanarYCbCrData data;
data.mYChannel = (uint8_t*)mSurface->GetBaseAddressOfPlane(0);
data.mYStride = mSurface->GetBytesPerRow(0);
data.mYSize = IntSize(mSurface->GetDevicePixelWidth(0), mSurface->GetDevicePixelHeight(0));
data.mCbChannel = cbPlane;
data.mCrChannel = crPlane;
data.mCbCrStride = cbCrWidth;
data.mCbCrSize = IntSize(cbCrWidth, cbCrHeight);
data.mPicSize = data.mYSize;
ConvertYCbCrToRGB(data, SurfaceFormat::B8G8R8X8, IntSize(ioWidth, ioHeight), mappedSurface.mData, mappedSurface.mStride);
} else {
unsigned char* ioData = (unsigned char*)mSurface->GetBaseAddress();
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();
}