Support ignoring alpha in imageContentToDecode#3288
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Add AVIF_IMAGE_CONTENT_COLOR and AVIF_IMAGE_CONTENT_ALPHA and allow decoding color only. Decoding alpha only is still not supported. Remove the ignoreAlpha parameter from the avifImageCreateView() function. If alpha should be ignored, the caller of avifImageCreateView() is responsible for clearing the AVIF_IMAGE_CONTENT_ALPHA bit in decoder->imageContentToDecode before decoding (assuming srcImage is decoder->image).
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Add AVIF_IMAGE_CONTENT_COLOR and AVIF_IMAGE_CONTENT_ALPHA and allow
decoding color only. Decoding alpha only is still not supported.
Remove the ignoreAlpha parameter from the avifImageCreateView()
function. If alpha should be ignored, the caller of
avifImageCreateView() is responsible for clearing the
AVIF_IMAGE_CONTENT_ALPHA bit in decoder->imageContentToDecode before
decoding (assuming srcImage is decoder->image).