mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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370e329706
Backed out changeset 4441c32c724c (bug 960254) Backed out changeset 4aecc5ca2a19 (bug 960254) Backed out changeset 9f499e5f7954 (bug 960354) Backed out changeset fd9b6b044a5a (bug 960354) Backed out changeset c1f6fbc397bd (bug 960354)
269 lines
8.6 KiB
C++
269 lines
8.6 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/layers/YCbCrImageDataSerializer.h"
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#include <string.h> // for memcpy
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#include "gfx2DGlue.h" // for ToIntSize
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#include "mozilla/gfx/2D.h" // for DataSourceSurface, Factory
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#include "mozilla/gfx/BaseSize.h" // for BaseSize
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#include "mozilla/gfx/Types.h"
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#include "mozilla/mozalloc.h" // for operator delete
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#include "yuv_convert.h" // for ConvertYCbCrToRGB32, etc
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#define MOZ_ALIGN_WORD(x) (((x) + 3) & ~3)
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namespace mozilla {
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namespace layers {
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// The Data is layed out as follows:
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//
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// +-----------------+ -++ --+ --+ <-- Beginning of the buffer
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// | YCbCrBufferInfo | | | |
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// +-----------------+ --+ | |
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// | data | | | YCbCrBufferInfo->[mY/mCb/mCr]Offset
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// +-----------------+ ------+ |
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// | data | |
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// +-----------------+ ----------+
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// | data |
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// +-----------------+
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//
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// There can be padding between the blocks above to keep word alignment.
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// Structure written at the beginning og the data blob containing the image
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// (as shown in the figure above). It contains the necessary informations to
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// read the image in the blob.
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struct YCbCrBufferInfo
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{
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uint32_t mYOffset;
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uint32_t mCbOffset;
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uint32_t mCrOffset;
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uint32_t mYStride;
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uint32_t mYWidth;
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uint32_t mYHeight;
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uint32_t mCbCrStride;
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uint32_t mCbCrWidth;
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uint32_t mCbCrHeight;
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StereoMode mStereoMode;
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};
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static YCbCrBufferInfo* GetYCbCrBufferInfo(uint8_t* aData)
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{
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return reinterpret_cast<YCbCrBufferInfo*>(aData);
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}
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bool YCbCrImageDataDeserializerBase::IsValid()
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{
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if (mData == nullptr) {
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return false;
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}
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return true;
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}
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uint8_t* YCbCrImageDataDeserializerBase::GetYData()
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{
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YCbCrBufferInfo* info = GetYCbCrBufferInfo(mData);
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return reinterpret_cast<uint8_t*>(info) + info->mYOffset;
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}
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uint8_t* YCbCrImageDataDeserializerBase::GetCbData()
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{
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YCbCrBufferInfo* info = GetYCbCrBufferInfo(mData);
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return reinterpret_cast<uint8_t*>(info) + info->mCbOffset;
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}
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uint8_t* YCbCrImageDataDeserializerBase::GetCrData()
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{
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YCbCrBufferInfo* info = GetYCbCrBufferInfo(mData);
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return reinterpret_cast<uint8_t*>(info) + info->mCrOffset;
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}
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uint8_t* YCbCrImageDataDeserializerBase::GetData()
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{
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YCbCrBufferInfo* info = GetYCbCrBufferInfo(mData);
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return (reinterpret_cast<uint8_t*>(info)) + MOZ_ALIGN_WORD(sizeof(YCbCrBufferInfo));
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}
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uint32_t YCbCrImageDataDeserializerBase::GetYStride()
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{
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YCbCrBufferInfo* info = GetYCbCrBufferInfo(mData);
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return info->mYStride;
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}
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uint32_t YCbCrImageDataDeserializerBase::GetCbCrStride()
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{
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YCbCrBufferInfo* info = GetYCbCrBufferInfo(mData);
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return info->mCbCrStride;
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}
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gfx::IntSize YCbCrImageDataDeserializerBase::GetYSize()
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{
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YCbCrBufferInfo* info = GetYCbCrBufferInfo(mData);
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return gfx::IntSize(info->mYWidth, info->mYHeight);
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}
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gfx::IntSize YCbCrImageDataDeserializerBase::GetCbCrSize()
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{
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YCbCrBufferInfo* info = GetYCbCrBufferInfo(mData);
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return gfx::IntSize(info->mCbCrWidth, info->mCbCrHeight);
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}
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StereoMode YCbCrImageDataDeserializerBase::GetStereoMode()
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{
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YCbCrBufferInfo* info = GetYCbCrBufferInfo(mData);
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return info->mStereoMode;
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}
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// Offset in bytes
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static size_t ComputeOffset(uint32_t aHeight, uint32_t aStride)
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{
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return MOZ_ALIGN_WORD(aHeight * aStride);
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}
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// Minimum required shmem size in bytes
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size_t
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YCbCrImageDataSerializer::ComputeMinBufferSize(const gfx::IntSize& aYSize,
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const gfx::IntSize& aCbCrSize)
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{
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uint32_t yStride = aYSize.width;
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uint32_t CbCrStride = aCbCrSize.width;
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return ComputeOffset(aYSize.height, yStride)
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+ 2 * ComputeOffset(aCbCrSize.height, CbCrStride)
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+ MOZ_ALIGN_WORD(sizeof(YCbCrBufferInfo));
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}
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// Offset in bytes
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static size_t ComputeOffset(uint32_t aSize)
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{
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return MOZ_ALIGN_WORD(aSize);
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}
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// Minimum required shmem size in bytes
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size_t
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YCbCrImageDataSerializer::ComputeMinBufferSize(uint32_t aSize)
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{
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return ComputeOffset(aSize) + MOZ_ALIGN_WORD(sizeof(YCbCrBufferInfo));
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}
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void
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YCbCrImageDataSerializer::InitializeBufferInfo(uint32_t aYOffset,
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uint32_t aCbOffset,
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uint32_t aCrOffset,
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uint32_t aYStride,
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uint32_t aCbCrStride,
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const gfx::IntSize& aYSize,
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const gfx::IntSize& aCbCrSize,
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StereoMode aStereoMode)
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{
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YCbCrBufferInfo* info = GetYCbCrBufferInfo(mData);
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uint32_t info_size = MOZ_ALIGN_WORD(sizeof(YCbCrBufferInfo));
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info->mYOffset = info_size + aYOffset;
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info->mCbOffset = info_size + aCbOffset;
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info->mCrOffset = info_size + aCrOffset;
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info->mYStride = aYStride;
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info->mYWidth = aYSize.width;
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info->mYHeight = aYSize.height;
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info->mCbCrStride = aCbCrStride;
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info->mCbCrWidth = aCbCrSize.width;
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info->mCbCrHeight = aCbCrSize.height;
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info->mStereoMode = aStereoMode;
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}
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void
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YCbCrImageDataSerializer::InitializeBufferInfo(uint32_t aYStride,
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uint32_t aCbCrStride,
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const gfx::IntSize& aYSize,
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const gfx::IntSize& aCbCrSize,
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StereoMode aStereoMode)
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{
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uint32_t yOffset = 0;
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uint32_t cbOffset = yOffset + MOZ_ALIGN_WORD(aYStride * aYSize.height);
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uint32_t crOffset = cbOffset + MOZ_ALIGN_WORD(aCbCrStride * aCbCrSize.height);
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return InitializeBufferInfo(yOffset, cbOffset, crOffset,
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aYStride, aCbCrStride, aYSize, aCbCrSize, aStereoMode);
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}
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void
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YCbCrImageDataSerializer::InitializeBufferInfo(const gfx::IntSize& aYSize,
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const gfx::IntSize& aCbCrSize,
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StereoMode aStereoMode)
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{
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return InitializeBufferInfo(aYSize.width, aCbCrSize.width, aYSize, aCbCrSize, aStereoMode);
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}
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static void CopyLineWithSkip(const uint8_t* src, uint8_t* dst, uint32_t len, uint32_t skip) {
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for (uint32_t i = 0; i < len; ++i) {
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*dst = *src;
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src += 1 + skip;
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++dst;
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}
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}
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bool
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YCbCrImageDataSerializer::CopyData(const uint8_t* aYData,
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const uint8_t* aCbData, const uint8_t* aCrData,
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gfx::IntSize aYSize, uint32_t aYStride,
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gfx::IntSize aCbCrSize, uint32_t aCbCrStride,
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uint32_t aYSkip, uint32_t aCbCrSkip)
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{
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if (!IsValid() || GetYSize() != aYSize || GetCbCrSize() != aCbCrSize) {
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return false;
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}
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for (int i = 0; i < aYSize.height; ++i) {
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if (aYSkip == 0) {
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// fast path
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memcpy(GetYData() + i * GetYStride(),
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aYData + i * aYStride,
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aYSize.width);
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} else {
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// slower path
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CopyLineWithSkip(aYData + i * aYStride,
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GetYData() + i * GetYStride(),
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aYSize.width, aYSkip);
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}
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}
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for (int i = 0; i < aCbCrSize.height; ++i) {
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if (aCbCrSkip == 0) {
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// fast path
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memcpy(GetCbData() + i * GetCbCrStride(),
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aCbData + i * aCbCrStride,
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aCbCrSize.width);
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memcpy(GetCrData() + i * GetCbCrStride(),
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aCrData + i * aCbCrStride,
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aCbCrSize.width);
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} else {
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// slower path
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CopyLineWithSkip(aCbData + i * aCbCrStride,
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GetCbData() + i * GetCbCrStride(),
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aCbCrSize.width, aCbCrSkip);
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CopyLineWithSkip(aCrData + i * aCbCrStride,
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GetCrData() + i * GetCbCrStride(),
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aCbCrSize.width, aCbCrSkip);
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}
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}
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return true;
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}
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TemporaryRef<gfx::DataSourceSurface>
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YCbCrImageDataDeserializer::ToDataSourceSurface()
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{
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RefPtr<gfx::DataSourceSurface> result =
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gfx::Factory::CreateDataSourceSurface(GetYSize(), gfx::SurfaceFormat::R8G8B8X8);
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gfx::ConvertYCbCrToRGB32(GetYData(), GetCbData(), GetCrData(),
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result->GetData(),
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0, 0, //pic x and y
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GetYSize().width, GetYSize().height,
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GetYStride(), GetCbCrStride(),
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result->Stride(),
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gfx::YV12);
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result->MarkDirty();
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return result.forget();
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}
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} // namespace
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} // namespace
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