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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 "SourceSurfaceVolatileData.h"

#include "gfxAlphaRecovery.h"
#include "mozilla/Likely.h"
#include "mozilla/Types.h" // for decltype

namespace mozilla {
namespace gfx {

bool
SourceSurfaceVolatileData::Init(const IntSize &aSize,
                                int32_t aStride,
                                SurfaceFormat aFormat)
{
  mSize = aSize;
  mStride = aStride;
  mFormat = aFormat;

  size_t alignment = size_t(1) << gfxAlphaRecovery::GoodAlignmentLog2();
  mVBuf = new VolatileBuffer();
  if (MOZ_UNLIKELY(!mVBuf->Init(aStride * aSize.height, alignment))) {
    mVBuf = nullptr;
    return false;
  }

  return true;
}

void
SourceSurfaceVolatileData::GuaranteePersistance()
{
  MOZ_ASSERT_UNREACHABLE("Should use SourceSurfaceRawData wrapper!");
}

void
SourceSurfaceVolatileData::AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf,
                                                  size_t& aHeapSizeOut,
                                                  size_t& aNonHeapSizeOut) const
{
  if (mVBuf) {
    aHeapSizeOut += mVBuf->HeapSizeOfExcludingThis(aMallocSizeOf);
    aNonHeapSizeOut += mVBuf->NonHeapSizeOfExcludingThis();
  }
}

} // namespace gfx
} // namespace mozilla