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avconv_opt: Add an option that lists all supported hwaccels

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Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Timothy Gu 2015-08-25 16:45:21 -07:00 committed by Luca Barbato
parent 629d4c5b4d
commit c23999be13
2 changed files with 18 additions and 0 deletions
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14
avconv_opt.c
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@ -177,6 +177,18 @@ static double parse_frame_aspect_ratio(const char *arg)
return ar;
}
static int show_hwaccels(void *optctx, const char *opt, const char *arg)
{
int i;
printf("Supported hardware acceleration:\n");
for (i = 0; i < FF_ARRAY_ELEMS(hwaccels) - 1; i++) {
printf("%s\n", hwaccels[i].name);
}
printf("\n");
return 0;
}
static int opt_audio_codec(void *optctx, const char *opt, const char *arg)
{
OptionsContext *o = optctx;
@ -2446,6 +2458,8 @@ const OptionDef options[] = {
{ "hwaccel_device", OPT_VIDEO | OPT_STRING | HAS_ARG | OPT_EXPERT |
OPT_SPEC | OPT_INPUT, { .off = OFFSET(hwaccel_devices) },
"select a device for HW acceleration", "devicename" },
{ "hwaccels", OPT_EXIT, { .func_arg = show_hwaccels },
"show available HW acceleration methods" },
{ "autorotate", HAS_ARG | OPT_BOOL | OPT_SPEC |
OPT_EXPERT | OPT_INPUT, { .off = OFFSET(autorotate) },
"automatically insert correct rotate filters" },

4
doc/avconv.texi
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@ -626,6 +626,10 @@ is not specified, the value of the @var{DISPLAY} environment variable is used
For DXVA2, this option should contain the number of the display adapter to use.
If this option is not specified, the default adapter is used.
@end table
@item -hwaccels
List all hardware acceleration methods supported in this build of avconv.
@end table
@section Audio Options