/* -*- 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

 * 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;

  }

  MOZ_ASSERT(!mDeallocator);

  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;

}

void

SourceSurfaceAlignedRawData::AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf,

                                                    size_t& aHeapSizeOut,

                                                    size_t& aNonHeapSizeOut,

                                                    size_t& aExtHandlesOut) const

{

  aHeapSizeOut += mArray.HeapSizeOfExcludingThis(aMallocSizeOf);

}

} // namespace gfx

} // namespace mozilla