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ffmpeg: add -devices param

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FFmpeg mix devices and file formats when -formats option is used.
This commit adds a -devices param to list devices only.

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Lukasz Marek 2014-05-27 23:04:52 +02:00 • committed by Michael Niedermayer
parent bbc10a1aa5
commit 8518da23f5
5 changed files with 45 additions and 8 deletions
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35
cmdutils.c
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@ -1193,16 +1193,29 @@ int show_license(void *optctx, const char *opt, const char *arg)
return 0;
}
int show_formats(void *optctx, const char *opt, const char *arg)
static int is_device(const AVClass *avclass)
{
if (!avclass)
return 0;
return avclass->category == AV_CLASS_CATEGORY_DEVICE_VIDEO_OUTPUT ||
avclass->category == AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT ||
avclass->category == AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT ||
avclass->category == AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT ||
avclass->category == AV_CLASS_CATEGORY_DEVICE_OUTPUT ||
avclass->category == AV_CLASS_CATEGORY_DEVICE_INPUT;
}
static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only)
{
AVInputFormat *ifmt = NULL;
AVOutputFormat *ofmt = NULL;
const char *last_name;
int is_dev;
printf("File formats:\n"
printf("%s\n"
" D. = Demuxing supported\n"
" .E = Muxing supported\n"
" --\n");
" --\n", device_only ? "Devices:" : "File formats:");
last_name = "000";
for (;;) {
int decode = 0;
@ -1211,6 +1224,9 @@ int show_formats(void *optctx, const char *opt, const char *arg)
const char *long_name = NULL;
while ((ofmt = av_oformat_next(ofmt))) {
is_dev = is_device(ofmt->priv_class);
if (!is_dev && device_only)
continue;
if ((name == NULL || strcmp(ofmt->name, name) < 0) &&
strcmp(ofmt->name, last_name) > 0) {
name = ofmt->name;
@ -1219,6 +1235,9 @@ int show_formats(void *optctx, const char *opt, const char *arg)
}
}
while ((ifmt = av_iformat_next(ifmt))) {
is_dev = is_device(ifmt->priv_class);
if (!is_dev && device_only)
continue;
if ((name == NULL || strcmp(ifmt->name, name) < 0) &&
strcmp(ifmt->name, last_name) > 0) {
name = ifmt->name;
@ -1241,6 +1260,16 @@ int show_formats(void *optctx, const char *opt, const char *arg)
return 0;
}
int show_formats(void *optctx, const char *opt, const char *arg)
{
return show_formats_devices(optctx, opt, arg, 0);
}
int show_devices(void *optctx, const char *opt, const char *arg)
{
return show_formats_devices(optctx, opt, arg, 1);
}
#define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \
if (codec->field) { \
const type *p = codec->field; \