Am Fr., 17. Sept. 2021 um 10:39 Uhr schrieb Peter Ross <pr...@xvid.org>:
> +static int gem_probe(const AVProbeData *p)
> +{
> + const uint8_t *b = p->buf;
> + int ret = 0;
> + if ( AV_RB16(b ) >= 1 && AV_RB16(b ) <= 3 &&
> + AV_RB16(b + 2) >= 8 && AV_RB16(b + 2) <= 779 &&
> + (AV_RB16(b + 4) > 0 || AV_RB16(b + 4) <= 8) &&
> + (AV_RB16(b + 6) > 0 || AV_RB16(b + 6) <= 8) &&
> + AV_RB16(b + 8) &&
> + AV_RB16(b + 10) &&
> + AV_RB16(b + 12) &&
> + AV_RB16(b + 14)) {
> + ret = AVPROBE_SCORE_EXTENSION / 4;
Without running probetest, this score looks too high to me.
(1, 2 or 3 followed by anything not 0 with some restrictions?)
Why is the above sufficient? Are there files in the wild
without the fourcc's below?
> + if (AV_RN32(b + 16) == AV_RN32("STTT") ||
> + AV_RN32(b + 16) == AV_RN32("TIMG") ||
> + AV_RN32(b + 16) == AV_RN32("XIMG"))
> + ret += 1;
Should be EXTENSION + 1
Carl Eugen
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