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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "libyuv.h"
#include "MacIOSurfaceHelpers.h"
#include "mozilla/gfx/MacIOSurface.h"
#include "YCbCrUtils.h"
namespace mozilla {
using namespace gfx;
namespace layers {
#define ALIGNED_32(x) ((x + 31) & ~31)
#define ALIGNEDPTR_32(x) \
reinterpret_cast<uint8_t*>((reinterpret_cast<uintptr_t>(x) + 31) & ~31)
static already_AddRefed<SourceSurface>
CreateSourceSurfaceFromLockedMacIOSurface(MacIOSurface* aSurface) {
size_t bytesPerRow = aSurface->GetBytesPerRow();
size_t ioWidth = aSurface->GetDevicePixelWidth();
size_t ioHeight = aSurface->GetDevicePixelHeight();
IntSize size((int32_t)ioWidth, (int32_t)ioHeight);
SurfaceFormat ioFormat = aSurface->GetFormat();
if ((ioFormat == SurfaceFormat::NV12 || ioFormat == SurfaceFormat::YUV422) &&
(ioWidth > PlanarYCbCrImage::MAX_DIMENSION ||
ioHeight > PlanarYCbCrImage::MAX_DIMENSION)) {
return nullptr;
}
SurfaceFormat format =
(ioFormat == SurfaceFormat::NV12 || ioFormat == SurfaceFormat::YUV422)
? SurfaceFormat::B8G8R8X8
: SurfaceFormat::B8G8R8A8;
RefPtr<DataSourceSurface> dataSurface =
Factory::CreateDataSourceSurface(size, format);
if (NS_WARN_IF(!dataSurface)) {
return nullptr;
}
DataSourceSurface::MappedSurface mappedSurface;
if (!dataSurface->Map(DataSourceSurface::WRITE, &mappedSurface)) {
return nullptr;
}
if (ioFormat == SurfaceFormat::NV12) {
/* Extract and separate the CbCr planes */
size_t cbCrStride = aSurface->GetBytesPerRow(1);
size_t cbCrWidth = aSurface->GetDevicePixelWidth(1);
size_t cbCrHeight = aSurface->GetDevicePixelHeight(1);
auto cbPlane = MakeUnique<uint8_t[]>(cbCrWidth * cbCrHeight);
auto crPlane = MakeUnique<uint8_t[]>(cbCrWidth * cbCrHeight);
uint8_t* src = (uint8_t*)aSurface->GetBaseAddressOfPlane(1);
uint8_t* cbDest = cbPlane.get();
uint8_t* crDest = crPlane.get();
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*)aSurface->GetBaseAddressOfPlane(0);
data.mYStride = aSurface->GetBytesPerRow(0);
data.mCbChannel = cbPlane.get();
data.mCrChannel = crPlane.get();
data.mCbCrStride = cbCrWidth;
data.mPictureRect = IntRect(IntPoint(0, 0), size);
data.mYUVColorSpace = aSurface->GetYUVColorSpace();
data.mColorRange = aSurface->IsFullRange() ? gfx::ColorRange::FULL
: gfx::ColorRange::LIMITED;
data.mChromaSubsampling = ChromaSubsampling::HALF_WIDTH_AND_HEIGHT;
ConvertYCbCrToRGB(data, SurfaceFormat::B8G8R8X8, size, mappedSurface.mData,
mappedSurface.mStride);
} else if (ioFormat == SurfaceFormat::YUV422) {
if (ioWidth == ALIGNED_32(ioWidth)) {
// Optimization when width is aligned to 32.
libyuv::ConvertToARGB((uint8_t*)aSurface->GetBaseAddress(),
0 /* not used */, mappedSurface.mData,
mappedSurface.mStride, 0, 0, size.width,
size.height, size.width, size.height,
libyuv::kRotate0, libyuv::FOURCC_YUYV);
} else {
/* Convert to YV16 */
size_t cbCrWidth = (ioWidth + 1) >> 1;
size_t cbCrHeight = ioHeight;
// Ensure our stride is a multiple of 32 to allow for memory aligned rows.
size_t cbCrStride = ALIGNED_32(cbCrWidth);
size_t strideDelta = cbCrStride - cbCrWidth;
MOZ_ASSERT(strideDelta <= 31);
auto yPlane = MakeUnique<uint8_t[]>(cbCrStride * 2 * ioHeight + 31);
auto cbPlane = MakeUnique<uint8_t[]>(cbCrStride * cbCrHeight + 31);
auto crPlane = MakeUnique<uint8_t[]>(cbCrStride * cbCrHeight + 31);
uint8_t* src = (uint8_t*)aSurface->GetBaseAddress();
uint8_t* yDest = ALIGNEDPTR_32(yPlane.get());
uint8_t* cbDest = ALIGNEDPTR_32(cbPlane.get());
uint8_t* crDest = ALIGNEDPTR_32(crPlane.get());
for (size_t i = 0; i < ioHeight; i++) {
uint8_t* rowSrc = src + bytesPerRow * i;
for (size_t j = 0; j < cbCrWidth; j++) {
*yDest = *rowSrc;
yDest++;
rowSrc++;
*cbDest = *rowSrc;
cbDest++;
rowSrc++;
*yDest = *rowSrc;
yDest++;
rowSrc++;
*crDest = *rowSrc;
crDest++;
rowSrc++;
}
if (strideDelta) {
cbDest += strideDelta;
crDest += strideDelta;
yDest += strideDelta << 1;
}
}
/* Convert to RGB */
PlanarYCbCrData data;
data.mYChannel = ALIGNEDPTR_32(yPlane.get());
data.mYStride = cbCrStride * 2;
data.mCbChannel = ALIGNEDPTR_32(cbPlane.get());
data.mCrChannel = ALIGNEDPTR_32(crPlane.get());
data.mCbCrStride = cbCrStride;
data.mPictureRect = IntRect(IntPoint(0, 0), size);
data.mYUVColorSpace = aSurface->GetYUVColorSpace();
data.mColorRange = aSurface->IsFullRange() ? gfx::ColorRange::FULL
: gfx::ColorRange::LIMITED;
data.mChromaSubsampling = ChromaSubsampling::HALF_WIDTH;
ConvertYCbCrToRGB(data, SurfaceFormat::B8G8R8X8, size,
mappedSurface.mData, mappedSurface.mStride);
}
} else {
unsigned char* ioData = (unsigned char*)aSurface->GetBaseAddress();
for (size_t i = 0; i < ioHeight; ++i) {
memcpy(mappedSurface.mData + i * mappedSurface.mStride,
ioData + i * bytesPerRow, ioWidth * 4);
}
}
dataSurface->Unmap();
return dataSurface.forget();
}
already_AddRefed<SourceSurface> CreateSourceSurfaceFromMacIOSurface(
MacIOSurface* aSurface) {
aSurface->Lock();
RefPtr<SourceSurface> result =
CreateSourceSurfaceFromLockedMacIOSurface(aSurface);
aSurface->Unlock();
return result.forget();
}
} // namespace layers
} // namespace mozilla