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avfilter/af_afir: adjust min partition size

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Minimal value allowed by our FFT is 16 thus min partition size is 8.
This commit is contained in:
Paul B Mahol 2019-01-05 09:38:27 +01:00
parent 5faa1b8b5a
commit f2e2456294
2 changed files with 4 additions and 4 deletions
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4
doc/filters.texi
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@ -1233,12 +1233,12 @@ Set video stream frame rate. This option is used only when @var{response} is ena
@item minp
Set minimal partition size used for convolution. Default is @var{8192}.
Allowed range is from @var{16} to @var{32768}.
Allowed range is from @var{8} to @var{32768}.
Lower values decreases latency at cost of higher CPU usage.
@item maxp
Set maximal partition size used for convolution. Default is @var{8192}.
Allowed range is from @var{16} to @var{32768}.
Allowed range is from @var{8} to @var{32768}.
Lower values may increase CPU usage.
@end table

4
libavfilter/af_afir.c
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@ -842,8 +842,8 @@ static const AVOption afir_options[] = {
{ "channel", "set IR channel to display frequency response", OFFSET(ir_channel), AV_OPT_TYPE_INT, {.i64=0}, 0, 1024, VF },
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "hd720"}, 0, 0, VF },
{ "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT32_MAX, VF },
{ "minp", "set min partition size", OFFSET(minp), AV_OPT_TYPE_INT, {.i64=8192}, 16, 32768, AF },
{ "maxp", "set max partition size", OFFSET(maxp), AV_OPT_TYPE_INT, {.i64=8192}, 16, 32768, AF },
{ "minp", "set min partition size", OFFSET(minp), AV_OPT_TYPE_INT, {.i64=8192}, 8, 32768, AF },
{ "maxp", "set max partition size", OFFSET(maxp), AV_OPT_TYPE_INT, {.i64=8192}, 8, 32768, AF },
{ NULL }
};