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f_lavfi: extend filter help output 

Also print type and help string. Also print AV_OPT_TYPE_CONST, which are
like the mpv choice option type, except different. Print them as
separate lines because FFmpeg usually has help strings for them too.
This commit is contained in:
wm4 2018-02-13 05:04:59 +01:00 committed by Kevin Mitchell
parent 223821d91c
commit ceca1602e9
1 changed files with 41 additions and 1 deletions
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42
filters/f_lavfi.c
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@ -914,6 +914,35 @@ static void dump_list(struct mp_log *log, int media_type)
}
}
static const char *get_avopt_type_name(enum AVOptionType type)
{
switch (type) {
case AV_OPT_TYPE_FLAGS: return "flags";
case AV_OPT_TYPE_INT: return "int";
case AV_OPT_TYPE_INT64: return "int64";
case AV_OPT_TYPE_DOUBLE: return "double";
case AV_OPT_TYPE_FLOAT: return "float";
case AV_OPT_TYPE_STRING: return "string";
case AV_OPT_TYPE_RATIONAL: return "rational";
case AV_OPT_TYPE_BINARY: return "binary";
case AV_OPT_TYPE_DICT: return "dict";
case AV_OPT_TYPE_UINT64: return "uint64";
case AV_OPT_TYPE_IMAGE_SIZE: return "imagesize";
case AV_OPT_TYPE_PIXEL_FMT: return "pixfmt";
case AV_OPT_TYPE_SAMPLE_FMT: return "samplefmt";
case AV_OPT_TYPE_VIDEO_RATE: return "fps";
case AV_OPT_TYPE_DURATION: return "duration";
case AV_OPT_TYPE_COLOR: return "color";
case AV_OPT_TYPE_CHANNEL_LAYOUT: return "channellayout";
case AV_OPT_TYPE_BOOL: return "bool";
case AV_OPT_TYPE_CONST: // fallthrough
default:
return NULL;
}
}
#define NSTR(s) ((s) ? (s) : "")
void print_lavfi_help(struct mp_log *log, const char *name, int media_type)
{
const AVFilter *f = avfilter_get_by_name(name);
@ -939,7 +968,18 @@ void print_lavfi_help(struct mp_log *log, const char *name, int media_type)
continue;
offset = o->offset;
mp_info(log, " %s\n", o->name);
const char *t = get_avopt_type_name(o->type);
char *tstr = t ? mp_tprintf(30, "<%s>", t) : "?";
mp_info(log, " %-10s %-12s %s\n", o->name, tstr, NSTR(o->help));
const AVOption *sub = o;
while (1) {
sub = av_opt_next(c, sub);
if (!sub || sub->type != AV_OPT_TYPE_CONST)
break;
mp_info(log, " %3s%-23s %s\n", "", sub->name, NSTR(sub->help));
}
count++;
}
mp_info(log, "\nTotal: %d options\n", count);