Apple

I don't believe you can ask for a bit depth that is different from the "native" input image depth. If you want to do that, I believe you'll need to allocate a separate pixel buffer and use something like vImage to convert between integer and float pixels.

On Aug 9, 2008, at 7:29 PM, Brad Wright wrote:

In testing with the temporal Image api, I've noticed that it ignores the image depth that you specify. If the inputImage is unsigned 8 bit YUV, you can't retrieve a floating point version of the image with the temporal API.

// Not going to get the correct format if the input image is 8 bit.

imageInfo.depth = kFxDepth_FLOAT32;

if ([tempororalImageApi getInputBitmap:(FxBitmap **) &myBitmapImage withInfo:(FxRenderInfo) imageInfo atTime:(double) renderInfo.frame]==NO)
{
NSLog(@"Failed to retrieve the original Bitmap image\n");
return NO;
}

References:
	>The Temporal Image API ignores the image depth (From: Brad Wright <email@hidden>)