/* -*- 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 "MacIOSurfaceTextureHostBasic.h"
#include "mozilla/gfx/MacIOSurface.h"
#include "MacIOSurfaceHelpers.h"

namespace mozilla {
namespace layers {

MacIOSurfaceTextureSourceBasic::MacIOSurfaceTextureSourceBasic(MacIOSurface* aSurface)
  : mSurface(aSurface)
{
  MOZ_COUNT_CTOR(MacIOSurfaceTextureSourceBasic);
}

MacIOSurfaceTextureSourceBasic::~MacIOSurfaceTextureSourceBasic()
{
  MOZ_COUNT_DTOR(MacIOSurfaceTextureSourceBasic);
}

gfx::IntSize
MacIOSurfaceTextureSourceBasic::GetSize() const
{
  return gfx::IntSize(mSurface->GetDevicePixelWidth(),
                      mSurface->GetDevicePixelHeight());
}

gfx::SurfaceFormat
MacIOSurfaceTextureSourceBasic::GetFormat() const
{
  // Set the format the same way as CreateSourceSurfaceFromMacIOSurface.
  return mSurface->GetFormat() == gfx::SurfaceFormat::NV12
    ? gfx::SurfaceFormat::B8G8R8X8 : gfx::SurfaceFormat::B8G8R8A8;
}

MacIOSurfaceTextureHostBasic::MacIOSurfaceTextureHostBasic(
    TextureFlags aFlags,
    const SurfaceDescriptorMacIOSurface& aDescriptor
)
  : TextureHost(aFlags)
{
  mSurface = MacIOSurface::LookupSurface(aDescriptor.surfaceId(),
                                         aDescriptor.scaleFactor(),
                                         !aDescriptor.isOpaque());
}

gfx::SourceSurface*
MacIOSurfaceTextureSourceBasic::GetSurface(gfx::DrawTarget* aTarget)
{
  if (!mSourceSurface) {
    mSourceSurface = CreateSourceSurfaceFromMacIOSurface(mSurface);
  }
  return mSourceSurface;
}

bool
MacIOSurfaceTextureHostBasic::Lock()
{
  if (!mProvider) {
    return false;
  }

  if (!mTextureSource) {
    mTextureSource = new MacIOSurfaceTextureSourceBasic(mSurface);
  }
  return true;
}

void
MacIOSurfaceTextureHostBasic::SetTextureSourceProvider(TextureSourceProvider* aProvider)
{
  if (!aProvider->AsCompositor() || !aProvider->AsCompositor()->AsBasicCompositor()) {
    mTextureSource = nullptr;
    return;
  }

  mProvider = aProvider;

  if (mTextureSource) {
    mTextureSource->SetTextureSourceProvider(aProvider);
  }
}

gfx::SurfaceFormat
MacIOSurfaceTextureHostBasic::GetFormat() const {
  return mSurface->HasAlpha() ? gfx::SurfaceFormat::R8G8B8A8 : gfx::SurfaceFormat::B8G8R8X8;
}

gfx::IntSize
MacIOSurfaceTextureHostBasic::GetSize() const {
  return gfx::IntSize(mSurface->GetDevicePixelWidth(),
                      mSurface->GetDevicePixelHeight());
}

} // namespace layers
} // namespace mozilla