如何使用 RGB 数据创建 CGImage？
谁能告诉我一个如何使用的清晰示例
CGImageRef CGImageCreate
(
size_t width,
size_t height,
size_t bitsPerComponent,
size_t bitsPerPixel,
size_t bytesPerRow,
CGColorSpaceRef colorspace,
CGBitmapInfo bitmapInfo,
CGDataProviderRef provider,
const CGFloat decode[],
bool shouldInterpolate,
CGColorRenderingIntent intent
);
我有一个 CGFloat dataBuffer [width * height * 3];
它包含图像的所有 RGB 数据。本质上，它从像素 R (0,0)、G (0,0)、B(0,0)、R(0,1)... 到 R(宽度、高度)、G(宽度、高度) , B(宽度,高度)
我知道图像的尺寸，宽度x高度。我如何使用我所拥有的信息并创建 CGImage？
请帮忙，谢谢
我发布了另一个包含上述问题的问题。 nschmidt 正确回答了，这里是链接
Can anyone show me a clear example of how to use
CGImageRef CGImageCreate
(
size_t width,
size_t height,
size_t bitsPerComponent,
size_t bitsPerPixel,
size_t bytesPerRow,
CGColorSpaceRef colorspace,
CGBitmapInfo bitmapInfo,
CGDataProviderRef provider,
const CGFloat decode[],
bool shouldInterpolate,
CGColorRenderingIntent intent
);
I have a CGFloat dataBuffer [width * height * 3];
It contains all of the RGB data of the image. Essentially, it goes from pixel R (0,0), G (0,0), B(0,0), R(0,1)... to R(width, height), G(width,height), B(width,height)
I know the size of the image, width x height. How do I use the information that I have and create and CGImage??
Please help, thanks
I posted another question that encompasses the above question. It was answered correctly by nschmidt, here is the link
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其中最大的谜团是数据提供者。答案是您需要创建一个 CGDataProvider 对象，该对象要么包含或可以提供您拥有的像素数据。
一些不太神秘的事情是传递给
colorSpace和bitmapInfo的内容。它们是一个 CGColorSpace 对象和一个 CGBitmapInfo 位掩码。decode数组的解释可能会更清楚，但明确的是您可能不需要它。传递NULL。除了这些之外，一切都是不言而喻的，或者在 中得到了很好的解释该函数的文档。
The biggest mystery there is the data provider. The answer for that is that you need to create a CGDataProvider object that either contains or can provide the pixel data you have.
Some lesser mysteries are what to pass for
colorSpaceandbitmapInfo. Those are a CGColorSpace object and a CGBitmapInfo bit-mask.The explanation of the
decodearray could be clearer, but what is clear is that you probably don't need one. PassNULL.Aside from those things, everything is either self-evident or well-explained in the documentation for this function.
我发布了包含上述问题的另一个问题。 nschmidt 正确回答了，这里是链接
在 Objective-C++ Cocoa 中将 RGB 数据转换为位图
I posted another question that encompasses the above question. It was answered correctly by nschmidt, here is the link
Converting RGB data into a bitmap in Objective-C++ Cocoa