本文整理汇总了C++中NativeImageSkia::config方法的典型用法代码示例。如果您正苦于以下问题：C++ NativeImageSkia::config方法的具体用法？C++ NativeImageSkia::config怎么用？C++ NativeImageSkia::config使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类NativeImageSkia的用法示例。
在下文中一共展示了NativeImageSkia::config方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: lock
bool GraphicsContext3D::getImageData(Image* image,
Vector<uint8_t>& outputVector,
bool premultiplyAlpha,
bool* hasAlphaChannel,
AlphaOp* neededAlphaOp,
unsigned int* format)
{
if (!image)
return false;
NativeImageSkia* skiaImage = image->nativeImageForCurrentFrame();
if (!skiaImage)
return false;
SkBitmap::Config skiaConfig = skiaImage->config();
// FIXME: must support more image configurations.
if (skiaConfig != SkBitmap::kARGB_8888_Config)
return false;
SkBitmap& skiaImageRef = *skiaImage;
SkAutoLockPixels lock(skiaImageRef);
int height = skiaImage->height();
int rowBytes = skiaImage->rowBytes();
ASSERT(rowBytes == skiaImage->width() * 4);
uint8_t* pixels = reinterpret_cast<uint8_t*>(skiaImage->getPixels());
outputVector.resize(rowBytes * height);
int size = rowBytes * height;
memcpy(outputVector.data(), pixels, size);
*hasAlphaChannel = true;
if (!premultiplyAlpha)
// FIXME: must fetch the image data before the premultiplication step
*neededAlphaOp = kAlphaDoUnmultiply;
// Convert from BGRA to RGBA. FIXME: add GL_BGRA extension support
// to all underlying OpenGL implementations.
for (int i = 0; i < size; i += 4)
std::swap(outputVector[i], outputVector[i + 2]);
*format = RGBA;
return true;
}