Hello,currently I am writing a Custom QuartzComposer PlugIn that needs to read and write
image data as fast as possible.
Starting from an example, I 've started to get my image data as follows:[self.inputImage lockBufferRepresentationWithPixelFormat:QCPlugInPixelFormatRGBAf colorSpace:[self.inputImage imageColorSpace] forBounds: [self.inputImage imageBounds]];
then I am operating on the buffer writing the data on a seperate output buffer from whom I generate a output provider
byprovider = [[context outputImageProviderFromBufferWithPixelFormat:QCPlugInPixelFormatRGBAf pixelsWide:width
pixelsHigh:height
baseAddress:outputBuffer
bytesPerRow:[self.inputImage
bufferBytesPerRow]
releaseCallback:_BufferReleaseCallback
releaseContext:NULL
colorSpace:[context colorSpace]
shouldColorMatch:YES] retain];
Now I am wondering, if this a efficient way, or if there are better
ways to do it.
Thanks for your help in advance, JUM
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