michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "SourceSurfaceRawData.h"
michael@0: 
michael@0: #include "DataSurfaceHelpers.h"
michael@0: #include "Logging.h"
michael@0: #include "mozilla/Types.h" // for decltype
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace gfx {
michael@0: 
michael@0: bool
michael@0: SourceSurfaceRawData::InitWrappingData(uint8_t *aData,
michael@0:                                        const IntSize &aSize,
michael@0:                                        int32_t aStride,
michael@0:                                        SurfaceFormat aFormat,
michael@0:                                        bool aOwnData)
michael@0: {
michael@0:   mRawData = aData;
michael@0:   mSize = aSize;
michael@0:   mStride = aStride;
michael@0:   mFormat = aFormat;
michael@0:   mOwnData = aOwnData;
michael@0: 
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: bool
michael@0: SourceSurfaceAlignedRawData::Init(const IntSize &aSize,
michael@0:                                   SurfaceFormat aFormat)
michael@0: {
michael@0:   mFormat = aFormat;
michael@0:   mStride = GetAlignedStride<16>(aSize.width * BytesPerPixel(aFormat));
michael@0: 
michael@0:   size_t bufLen = BufferSizeFromStrideAndHeight(mStride, aSize.height);
michael@0:   if (bufLen > 0) {
michael@0:     static_assert(sizeof(decltype(mArray[0])) == 1,
michael@0:                   "mArray.Realloc() takes an object count, so its objects must be 1-byte sized if we use bufLen");
michael@0:     mArray.Realloc(/* actually an object count */ bufLen);
michael@0:     mSize = aSize;
michael@0:   } else {
michael@0:     mArray.Dealloc();
michael@0:     mSize.SizeTo(0, 0);
michael@0:   }
michael@0: 
michael@0:   return mArray != nullptr;
michael@0: }
michael@0: 
michael@0: bool
michael@0: SourceSurfaceAlignedRawData::InitWithStride(const IntSize &aSize,
michael@0:                                             SurfaceFormat aFormat,
michael@0:                                             int32_t aStride)
michael@0: {
michael@0:   mFormat = aFormat;
michael@0:   mStride = aStride;
michael@0: 
michael@0:   size_t bufLen = BufferSizeFromStrideAndHeight(mStride, aSize.height);
michael@0:   if (bufLen > 0) {
michael@0:     static_assert(sizeof(decltype(mArray[0])) == 1,
michael@0:                   "mArray.Realloc() takes an object count, so its objects must be 1-byte sized if we use bufLen");
michael@0:     mArray.Realloc(/* actually an object count */ bufLen);
michael@0:     mSize = aSize;
michael@0:   } else {
michael@0:     mArray.Dealloc();
michael@0:     mSize.SizeTo(0, 0);
michael@0:   }
michael@0: 
michael@0:   return mArray != nullptr;
michael@0: }
michael@0: 
michael@0: }
michael@0: }