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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
#include "libyuv.h"
#include "MacIOSurfaceHelpers.h"
#include "mozilla/gfx/MacIOSurface.h"
#include "mozilla/ScopeExit.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 nsresult CopyFromLockedMacIOSurface(MacIOSurface* aSurface,
uint8_t* aData, int32_t aStride,
const IntSize& aSize,
SurfaceFormat aFormat) {
size_t bytesPerRow = aSurface->GetBytesPerRow();
SurfaceFormat ioFormat = aSurface->GetFormat();
if ((ioFormat == SurfaceFormat::NV12 || ioFormat == SurfaceFormat::YUV422) &&
(aSize.width > PlanarYCbCrImage::MAX_DIMENSION ||
aSize.height > PlanarYCbCrImage::MAX_DIMENSION)) {
return NS_ERROR_FAILURE;
}
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), aSize);
data.mYUVColorSpace = aSurface->GetYUVColorSpace();
data.mColorPrimaries = aSurface->mColorPrimaries;
data.mColorRange = aSurface->IsFullRange() ? gfx::ColorRange::FULL
: gfx::ColorRange::LIMITED;
data.mChromaSubsampling = ChromaSubsampling::HALF_WIDTH_AND_HEIGHT;
ConvertYCbCrToRGB(data, SurfaceFormat::B8G8R8X8, aSize, aData, aStride);
} else if (ioFormat == SurfaceFormat::YUV422) {
if (aSize.width == ALIGNED_32(aSize.width)) {
// Optimization when width is aligned to 32.
libyuv::ConvertToARGB((uint8_t*)aSurface->GetBaseAddress(),
0 /* not used */, aData, aStride, 0, 0, aSize.width,
aSize.height, aSize.width, aSize.height,
libyuv::kRotate0, libyuv::FOURCC_YUYV);
} else {
/* Convert to YV16 */
size_t cbCrWidth = (aSize.width + 1) >> 1;
size_t cbCrHeight = aSize.height;
// 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 * aSize.height + 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 (int32_t i = 0; i < aSize.height; 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), aSize);
data.mYUVColorSpace = aSurface->GetYUVColorSpace();
data.mColorPrimaries = aSurface->mColorPrimaries;
data.mColorRange = aSurface->IsFullRange() ? gfx::ColorRange::FULL
: gfx::ColorRange::LIMITED;
data.mChromaSubsampling = ChromaSubsampling::HALF_WIDTH;
ConvertYCbCrToRGB(data, SurfaceFormat::B8G8R8X8, aSize, aData, aStride);
}
} else {
unsigned char* ioData = (unsigned char*)aSurface->GetBaseAddress();
for (int32_t i = 0; i < aSize.height; ++i) {
memcpy(aData + i * aStride, ioData + i * bytesPerRow, aSize.width * 4);
}
}
return NS_OK;
}
already_AddRefed<SourceSurface> CreateSourceSurfaceFromMacIOSurface(
MacIOSurface* aSurface) {
aSurface->Lock();
auto scopeExit = MakeScopeExit([&]() { aSurface->Unlock(); });
size_t ioWidth = aSurface->GetDevicePixelWidth();
size_t ioHeight = aSurface->GetDevicePixelHeight();
IntSize size((int32_t)ioWidth, (int32_t)ioHeight);
SurfaceFormat ioFormat = aSurface->GetFormat();
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::ScopedMap map(dataSurface, DataSourceSurface::WRITE);
if (NS_WARN_IF(!map.IsMapped())) {
return nullptr;
}
nsresult rv = CopyFromLockedMacIOSurface(aSurface, map.GetData(),
map.GetStride(), size, format);
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
return dataSurface.forget();
}
nsresult CreateSurfaceDescriptorBufferFromMacIOSurface(
MacIOSurface* aSurface, SurfaceDescriptorBuffer& aSdBuffer,
Image::BuildSdbFlags aFlags,
const std::function<MemoryOrShmem(uint32_t)>& aAllocate) {
aSurface->Lock();
auto scopeExit = MakeScopeExit([&]() { aSurface->Unlock(); });
size_t ioWidth = aSurface->GetDevicePixelWidth();
size_t ioHeight = aSurface->GetDevicePixelHeight();
IntSize size((int32_t)ioWidth, (int32_t)ioHeight);
SurfaceFormat ioFormat = aSurface->GetFormat();
SurfaceFormat format =
(ioFormat == SurfaceFormat::NV12 || ioFormat == SurfaceFormat::YUV422)
? SurfaceFormat::B8G8R8X8
: SurfaceFormat::B8G8R8A8;
uint8_t* buffer = nullptr;
int32_t stride = 0;
nsresult rv = Image::AllocateSurfaceDescriptorBufferRgb(
size, format, buffer, aSdBuffer, stride, aAllocate);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return CopyFromLockedMacIOSurface(aSurface, buffer, stride, size, format);
}
} // namespace layers
} // namespace mozilla