gfx/layers/MacIOSurfaceImage.cpp

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "MacIOSurfaceImage.h"
   7 #include "mozilla/layers/MacIOSurfaceTextureClientOGL.h"
   8
   9 using namespace mozilla;
  10 using namespace mozilla::layers;
  11
  12 TextureClient*
  13 MacIOSurfaceImage::GetTextureClient(CompositableClient* aClient)
  14 {
  15   if (!mTextureClient) {
  16     RefPtr<MacIOSurfaceTextureClientOGL> buffer =
  17       new MacIOSurfaceTextureClientOGL(TextureFlags::DEFAULT);
  18     buffer->InitWith(mSurface);
  19     mTextureClient = buffer;
  20   }
  21   return mTextureClient;
  22 }
  23
  24 TemporaryRef<gfx::SourceSurface>
  25 MacIOSurfaceImage::GetAsSourceSurface()
  26 {
  27   mSurface->Lock();
  28   size_t bytesPerRow = mSurface->GetBytesPerRow();
  29   size_t ioWidth = mSurface->GetDevicePixelWidth();
  30   size_t ioHeight = mSurface->GetDevicePixelHeight();
  31
  32   unsigned char* ioData = (unsigned char*)mSurface->GetBaseAddress();
  33
  34   RefPtr<gfx::DataSourceSurface> dataSurface
  35     = gfx::Factory::CreateDataSourceSurface(gfx::IntSize(ioWidth, ioHeight), gfx::SurfaceFormat::B8G8R8A8);
  36   if (NS_WARN_IF(!dataSurface)) {
  37     return nullptr;
  38   }
  39
  40   gfx::DataSourceSurface::MappedSurface mappedSurface;
  41   if (!dataSurface->Map(gfx::DataSourceSurface::WRITE, &mappedSurface))
  42     return nullptr;
  43
  44   for (size_t i = 0; i < ioHeight; ++i) {
  45     memcpy(mappedSurface.mData + i * mappedSurface.mStride,
  46            ioData + i * bytesPerRow,
  47            ioWidth * 4);
  48   }
  49
  50   dataSurface->Unmap();
  51   mSurface->Unlock();
  52
  53   return dataSurface;
  54 }