Conversion of comparison results to avifBool about libavif

[joedrago]

Yeah, I think it is just a habit from an antiquated notion that C might return all bits set on a comparison instead of just 1 on some compilers, which would cause somebody checking against AVIF_TRUE to fail, but in practice nobody really does that anyway, so I agree with you.

I will remove them before I make my next release.

[wantehchang]

Thank you for the quick fix!

Some code uses an if statement for the conversion. Here is an example in src/codec_dav1d.c:

static avifBool dav1dCodecAlphaLimitedRange(avifCodec * codec)
{
if (codec->decodeInput->alpha && codec->internal->hasPicture && (codec->internal->colorRange == AVIF_RANGE_LIMITED)) {
return AVIF_TRUE;
}
return AVIF_FALSE;
}

It's not easy to find such code with grep.

[joedrago]

That function doesn't exist anymore. I killed it today.