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/* -*- 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 "SourceSurfaceRawData.h"
#include "DataSurfaceHelpers.h"
#include "Logging.h"
#include "mozilla/Types.h" // for decltype
namespace mozilla {
namespace gfx {
void
SourceSurfaceRawData::InitWrappingData(uint8_t *aData,
const IntSize &aSize,
int32_t aStride,
SurfaceFormat aFormat,
Factory::SourceSurfaceDeallocator aDeallocator,
void* aClosure)
{
mRawData = aData;
mSize = aSize;
mStride = aStride;
mFormat = aFormat;
if (aDeallocator) {
mOwnData = true;
}
mDeallocator = aDeallocator;
mClosure = aClosure;
}
void
SourceSurfaceRawData::GuaranteePersistance()
{
if (mOwnData) {
return;
}
uint8_t* oldData = mRawData;
mRawData = new uint8_t[mStride * mSize.height];
memcpy(mRawData, oldData, mStride * mSize.height);
mOwnData = true;
}
bool
SourceSurfaceAlignedRawData::Init(const IntSize &aSize,
SurfaceFormat aFormat,
bool aClearMem,
uint8_t aClearValue,
int32_t aStride)
{
mFormat = aFormat;
mStride = aStride ? aStride : GetAlignedStride<16>(aSize.width, BytesPerPixel(aFormat));
size_t bufLen = BufferSizeFromStrideAndHeight(mStride, aSize.height);
if (bufLen > 0) {
bool zeroMem = aClearMem && !aClearValue;
static_assert(sizeof(decltype(mArray[0])) == 1,
"mArray.Realloc() takes an object count, so its objects must be 1-byte sized if we use bufLen");
// AlignedArray uses cmalloc to zero mem for a fast path.
mArray.Realloc(/* actually an object count */ bufLen, zeroMem);
mSize = aSize;
if (mArray && aClearMem && aClearValue) {
memset(mArray, aClearValue, mStride * aSize.height);
}
} else {
mArray.Dealloc();
mSize.SizeTo(0, 0);
}
return mArray != nullptr;
}
} // namespace gfx
} // namespace mozilla
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