/* -*- 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 "RenderSharedSurfaceTextureHost.h"

#include "mozilla/gfx/Logging.h"

#include "mozilla/layers/ImageDataSerializer.h"

#include "mozilla/layers/SourceSurfaceSharedData.h"

namespace mozilla {

namespace wr {

RenderSharedSurfaceTextureHost::RenderSharedSurfaceTextureHost(gfx::SourceSurfaceSharedDataWrapper* aSurface)

  : mSurface(aSurface)

  , mMap()

  , mLocked(false)

{

  MOZ_COUNT_CTOR_INHERITED(RenderSharedSurfaceTextureHost, RenderTextureHost);

  MOZ_ASSERT(aSurface);

}

RenderSharedSurfaceTextureHost::~RenderSharedSurfaceTextureHost()

{

  MOZ_COUNT_DTOR_INHERITED(RenderSharedSurfaceTextureHost, RenderTextureHost);

}

wr::WrExternalImage

RenderSharedSurfaceTextureHost::Lock(uint8_t aChannelIndex,

                                     gl::GLContext* aGL,

                                     wr::ImageRendering aRendering)

{

  if (!mLocked) {

    if (NS_WARN_IF(!mSurface->Map(gfx::DataSourceSurface::MapType::READ_WRITE,

                                  &mMap))) {

      return InvalidToWrExternalImage();

    }

    mLocked = true;

  }

  return RawDataToWrExternalImage(mMap.mData,

                                  mMap.mStride * mSurface->GetSize().height);

}

void

RenderSharedSurfaceTextureHost::Unlock()

{

  if (mLocked) {

    mSurface->Unmap();

    mLocked = false;

  }

}

} // namespace wr

} // namespace mozilla