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cmdutils: add show_demuxers and show_muxers 

add -muxers and -demuxers parameters to list the dexmuers and muxers

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Steven Liu 2016-11-04 20:20:25 +08:00 committed by Michael Niedermayer
parent 0cf6853804
commit acd87dfc05
3 changed files with 59 additions and 23 deletions
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66
cmdutils.c
View File

@ -75,6 +75,12 @@ static FILE *report_file;
static int report_file_level = AV_LOG_DEBUG;
int hide_banner = 0;
enum show_muxdemuxers {
SHOW_DEFAULT,
SHOW_DEMUXERS,
SHOW_MUXERS,
};
void init_opts(void)
{
av_dict_set(&sws_dict, "flags", "bicubic", 0);
@ -1251,7 +1257,7 @@ static int is_device(const AVClass *avclass)
return AV_IS_INPUT_DEVICE(avclass->category) || AV_IS_OUTPUT_DEVICE(avclass->category);
}
static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only)
static int show_formats_devices(void *optctx, const char *opt, const char *arg, int device_only, int muxdemuxers)
{
AVInputFormat *ifmt = NULL;
AVOutputFormat *ofmt = NULL;
@ -1269,29 +1275,33 @@ static int show_formats_devices(void *optctx, const char *opt, const char *arg,
const char *name = NULL;
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 || strcmp(ofmt->name, name) < 0) &&
strcmp(ofmt->name, last_name) > 0) {
name = ofmt->name;
long_name = ofmt->long_name;
encode = 1;
if (muxdemuxers !=SHOW_DEMUXERS) {
while ((ofmt = av_oformat_next(ofmt))) {
is_dev = is_device(ofmt->priv_class);
if (!is_dev && device_only)
continue;
if ((!name || strcmp(ofmt->name, name) < 0) &&
strcmp(ofmt->name, last_name) > 0) {
name = ofmt->name;
long_name = ofmt->long_name;
encode = 1;
}
}
}
while ((ifmt = av_iformat_next(ifmt))) {
is_dev = is_device(ifmt->priv_class);
if (!is_dev && device_only)
continue;
if ((!name || strcmp(ifmt->name, name) < 0) &&
strcmp(ifmt->name, last_name) > 0) {
name = ifmt->name;
long_name = ifmt->long_name;
encode = 0;
if (muxdemuxers != SHOW_MUXERS) {
while ((ifmt = av_iformat_next(ifmt))) {
is_dev = is_device(ifmt->priv_class);
if (!is_dev && device_only)
continue;
if ((!name || strcmp(ifmt->name, name) < 0) &&
strcmp(ifmt->name, last_name) > 0) {
name = ifmt->name;
long_name = ifmt->long_name;
encode = 0;
}
if (name && strcmp(ifmt->name, name) == 0)
decode = 1;
}
if (name && strcmp(ifmt->name, name) == 0)
decode = 1;
}
if (!name)
break;
@ -1308,12 +1318,22 @@ static int show_formats_devices(void *optctx, const char *opt, const char *arg,
int show_formats(void *optctx, const char *opt, const char *arg)
{
return show_formats_devices(optctx, opt, arg, 0);
return show_formats_devices(optctx, opt, arg, 0, SHOW_DEFAULT);
}
int show_muxers(void *optctx, const char *opt, const char *arg)
{
return show_formats_devices(optctx, opt, arg, 0, SHOW_MUXERS);
}
int show_demuxers(void *optctx, const char *opt, const char *arg)
{
return show_formats_devices(optctx, opt, arg, 0, SHOW_DEMUXERS);
}
int show_devices(void *optctx, const char *opt, const char *arg)
{
return show_formats_devices(optctx, opt, arg, 1);
return show_formats_devices(optctx, opt, arg, 1, SHOW_DEFAULT);
}
#define PRINT_CODEC_SUPPORTED(codec, field, type, list_name, term, get_name) \

14
cmdutils.h
View File

@ -441,6 +441,20 @@ int show_license(void *optctx, const char *opt, const char *arg);
*/
int show_formats(void *optctx, const char *opt, const char *arg);
/**
* Print a listing containing all the muxers supported by the
* program (including devices).
* This option processing function does not utilize the arguments.
*/
int show_muxers(void *optctx, const char *opt, const char *arg);
/**
* Print a listing containing all the demuxer supported by the
* program (including devices).
* This option processing function does not utilize the arguments.
*/
int show_demuxers(void *optctx, const char *opt, const char *arg);
/**
* Print a listing containing all the devices supported by the
* program.

2
cmdutils_common_opts.h
View File

@ -6,6 +6,8 @@
{ "version" , OPT_EXIT, {.func_arg = show_version}, "show version" },
{ "buildconf" , OPT_EXIT, {.func_arg = show_buildconf}, "show build configuration" },
{ "formats" , OPT_EXIT, {.func_arg = show_formats }, "show available formats" },
{ "muxers" , OPT_EXIT, {.func_arg = show_muxers }, "show available muxers" },
{ "demuxers" , OPT_EXIT, {.func_arg = show_demuxers }, "show available demuxers" },
{ "devices" , OPT_EXIT, {.func_arg = show_devices }, "show available devices" },
{ "codecs" , OPT_EXIT, {.func_arg = show_codecs }, "show available codecs" },
{ "decoders" , OPT_EXIT, {.func_arg = show_decoders }, "show available decoders" },