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af_join: switch to an AVOptions-based system. 

Change the mappings separator from comma to '|' to avoid excessive
escaping, since comma is already used for separating filters in the
filtergraph description.
This commit is contained in:
Anton Khirnov 2013-02-25 21:21:29 +01:00
parent 3f14febbdf
commit dd7fc37c71
2 changed files with 13 additions and 10 deletions
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4
doc/filters.texi
View File

@ -347,7 +347,7 @@ Number of input streams. Defaults to 2.
Desired output channel layout. Defaults to stereo.
@item map
Map channels from inputs to output. The argument is a comma-separated list of
Map channels from inputs to output. The argument is a '|'-separated list of
mappings, each in the @code{@var{input_idx}.@var{in_channel}-@var{out_channel}}
form. @var{input_idx} is the 0-based index of the input stream. @var{in_channel}
can be either the name of the input channel (e.g. FL for front left) or its
@ -367,7 +367,7 @@ avconv -i INPUT1 -i INPUT2 -i INPUT3 -filter_complex join=inputs=3 OUTPUT
To build a 5.1 output from 6 single-channel streams:
@example
avconv -i fl -i fr -i fc -i sl -i sr -i lfe -filter_complex
'join=inputs=6:channel_layout=5.1:map=0.0-FL\,1.0-FR\,2.0-FC\,3.0-SL\,4.0-SR\,5.0-LFE'
'join=inputs=6:channel_layout=5.1:map=0.0-FL|1.0-FR|2.0-FC|3.0-SL|4.0-SR|5.0-LFE'
out
@end example

19
libavfilter/af_join.c
View File

@ -102,14 +102,23 @@ static int filter_frame(AVFilterLink *link, AVFrame *frame)
static int parse_maps(AVFilterContext *ctx)
{
JoinContext *s = ctx->priv;
char separator = '|';
char *cur = s->map;
#if FF_API_OLD_FILTER_OPTS
if (cur && strchr(cur, ',')) {
av_log(ctx, AV_LOG_WARNING, "This syntax is deprecated, use '|' to "
"separate the mappings.\n");
separator = ',';
}
#endif
while (cur && *cur) {
char *sep, *next, *p;
uint64_t in_channel = 0, out_channel = 0;
int input_idx, out_ch_idx, in_ch_idx;
next = strchr(cur, ',');
next = strchr(cur, separator);
if (next)
*next++ = 0;
@ -182,13 +191,6 @@ static int join_init(AVFilterContext *ctx, const char *args)
JoinContext *s = ctx->priv;
int ret, i;
s->class = &join_class;
av_opt_set_defaults(s);
if ((ret = av_set_options_string(s, args, "=", ":")) < 0) {
av_log(ctx, AV_LOG_ERROR, "Error parsing options string '%s'.\n", args);
return ret;
}
if (!(s->channel_layout = av_get_channel_layout(s->channel_layout_str))) {
av_log(ctx, AV_LOG_ERROR, "Error parsing channel layout '%s'.\n",
s->channel_layout_str);
@ -512,6 +514,7 @@ AVFilter avfilter_af_join = {
.description = NULL_IF_CONFIG_SMALL("Join multiple audio streams into "
"multi-channel output"),
.priv_size = sizeof(JoinContext),
.priv_class = &join_class,
.init = join_init,
.uninit = join_uninit,