Example #1
0
// Same as above, for YCbCr surfaces
void TestTextureClientYCbCr(TextureClient* client, PlanarYCbCrData& ycbcrData) {
  client->Lock(OpenMode::OPEN_READ_WRITE);
  UpdateYCbCrTextureClient(client, ycbcrData);
  client->Unlock();

  // client serialization
  SurfaceDescriptor descriptor;
  ASSERT_TRUE(client->ToSurfaceDescriptor(descriptor));

  ASSERT_EQ(descriptor.type(), SurfaceDescriptor::TSurfaceDescriptorBuffer);
  auto bufferDesc = descriptor.get_SurfaceDescriptorBuffer();
  ASSERT_EQ(bufferDesc.desc().type(), BufferDescriptor::TYCbCrDescriptor);
  auto ycbcrDesc = bufferDesc.desc().get_YCbCrDescriptor();
  ASSERT_EQ(ycbcrDesc.ySize(), ycbcrData.mYSize);
  ASSERT_EQ(ycbcrDesc.cbCrSize(), ycbcrData.mCbCrSize);
  ASSERT_EQ(ycbcrDesc.stereoMode(), ycbcrData.mStereoMode);

  // host deserialization
  RefPtr<TextureHost> textureHost = CreateBackendIndependentTextureHost(descriptor, nullptr,
                                                                        client->GetFlags());

  RefPtr<BufferTextureHost> host = static_cast<BufferTextureHost*>(textureHost.get());

  ASSERT_TRUE(host.get() != nullptr);
  ASSERT_EQ(host->GetFlags(), client->GetFlags());

  // host read

  if (host->Lock()) {
    // This will work iff the compositor is not BasicCompositor
    ASSERT_EQ(host->GetFormat(), mozilla::gfx::SurfaceFormat::YUV);
    host->Unlock();
  }
}
already_AddRefed<gfx::DataSourceSurface>
GetSurfaceForDescriptor(const SurfaceDescriptor& aDescriptor)
{
  uint8_t* data = GetAddressFromDescriptor(aDescriptor);
  auto rgb = aDescriptor.get_SurfaceDescriptorBuffer().desc().get_RGBDescriptor();
  uint32_t stride = ImageDataSerializer::GetRGBStride(rgb);
  return gfx::Factory::CreateWrappingDataSourceSurface(data, stride, rgb.size(),
                                                       rgb.format());
}
already_AddRefed<TextureHost>
CreateBackendIndependentTextureHost(const SurfaceDescriptor& aDesc,
                                    ISurfaceAllocator* aDeallocator,
                                    TextureFlags aFlags)
{
  RefPtr<TextureHost> result;
  switch (aDesc.type()) {
    case SurfaceDescriptor::TSurfaceDescriptorBuffer: {
      const SurfaceDescriptorBuffer& bufferDesc = aDesc.get_SurfaceDescriptorBuffer();
      const MemoryOrShmem& data = bufferDesc.data();
      switch (data.type()) {
        case MemoryOrShmem::TShmem: {
          result = new ShmemTextureHost(data.get_Shmem(),
                                        bufferDesc.desc(),
                                        aDeallocator,
                                        aFlags);
          break;
        }
        case MemoryOrShmem::Tuintptr_t: {
          result = new MemoryTextureHost(reinterpret_cast<uint8_t*>(data.get_uintptr_t()),
                                         bufferDesc.desc(),
                                         aFlags);
          break;
        }
        default:
          MOZ_CRASH();
      }
      break;
    }
#ifdef XP_WIN
    case SurfaceDescriptor::TSurfaceDescriptorDIB: {
      result = new DIBTextureHost(aFlags, aDesc);
      break;
    }
    case SurfaceDescriptor::TSurfaceDescriptorFileMapping: {
      result = new TextureHostFileMapping(aFlags, aDesc);
      break;
    }
#endif
    default: {
      NS_WARNING("No backend independent TextureHost for this descriptor type");
    }
  }
  return result.forget();
}