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lavfi: parsing helper for unknown channel layouts.

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Make ff_parse_channel_layout() accept unknown layouts too.
This commit is contained in:
Nicolas George 2013-10-25 15:07:40 +02:00
parent d300f5f6f5
commit 6e2473edfd
6 changed files with 23 additions and 7 deletions
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2
libavfilter/af_aconvert.c
View File

@ -66,7 +66,7 @@ static av_cold int init(AVFilterContext *ctx)
(ret = ff_parse_sample_format(&aconvert->out_sample_fmt, aconvert->format_str, ctx)) < 0)
return ret;
if (aconvert->channel_layout_str && strcmp(aconvert->channel_layout_str, "auto"))
return ff_parse_channel_layout(&aconvert->out_chlayout, aconvert->channel_layout_str, ctx);
return ff_parse_channel_layout(&aconvert->out_chlayout, NULL, aconvert->channel_layout_str, ctx);
return ret;
}

2
libavfilter/af_pan.c
View File

@ -116,7 +116,7 @@ static av_cold int init(AVFilterContext *ctx)
if (!args)
return AVERROR(ENOMEM);
arg = av_strtok(args, "|", &tokenizer);
ret = ff_parse_channel_layout(&pan->out_channel_layout, arg, ctx);
ret = ff_parse_channel_layout(&pan->out_channel_layout, NULL, arg, ctx);
if (ret < 0)
goto fail;
pan->nb_output_channels = av_get_channel_layout_nb_channels(pan->out_channel_layout);

2
libavfilter/asrc_aevalsrc.c
View File

@ -109,7 +109,7 @@ static av_cold int init(AVFilterContext *ctx)
if (eval->chlayout_str) {
int n;
ret = ff_parse_channel_layout(&eval->chlayout, eval->chlayout_str, ctx);
ret = ff_parse_channel_layout(&eval->chlayout, NULL, eval->chlayout_str, ctx);
if (ret < 0)
goto end;

2
libavfilter/asrc_anullsrc.c
View File

@ -68,7 +68,7 @@ static av_cold int init(AVFilterContext *ctx)
null->sample_rate_str, ctx)) < 0)
return ret;
if ((ret = ff_parse_channel_layout(&null->channel_layout,
if ((ret = ff_parse_channel_layout(&null->channel_layout, NULL,
null->channel_layout_str, ctx)) < 0)
return ret;

17
libavfilter/formats.c
View File

@ -615,10 +615,21 @@ int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx)
return 0;
}
int ff_parse_channel_layout(int64_t *ret, const char *arg, void *log_ctx)
int ff_parse_channel_layout(int64_t *ret, int *nret, const char *arg,
void *log_ctx)
{
char *tail;
int64_t chlayout = av_get_channel_layout(arg);
int64_t chlayout, count;
if (nret) {
count = strtol(arg, &tail, 10);
if (*tail == 'c' && !tail[1] && count > 0 && count < 63) {
*nret = count;
*ret = 0;
return 0;
}
}
chlayout = av_get_channel_layout(arg);
if (chlayout == 0) {
chlayout = strtol(arg, &tail, 10);
if (*tail || chlayout == 0) {
@ -627,6 +638,8 @@ int ff_parse_channel_layout(int64_t *ret, const char *arg, void *log_ctx)
}
}
*ret = chlayout;
if (nret)
*nret = av_get_channel_layout_nb_channels(chlayout);
return 0;
}

5
libavfilter/internal.h
View File

@ -207,11 +207,14 @@ int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx);
* Parse a channel layout or a corresponding integer representation.
*
* @param ret 64bit integer pointer to where the value should be written.
* @param nret integer pointer to the number of channels;
* if not NULL, then unknown channel layouts are accepted
* @param arg string to parse
* @param log_ctx log context
* @return >= 0 in case of success, a negative AVERROR code on error
*/
int ff_parse_channel_layout(int64_t *ret, const char *arg, void *log_ctx);
int ff_parse_channel_layout(int64_t *ret, int *nret, const char *arg,
void *log_ctx);
void ff_update_link_current_pts(AVFilterLink *link, int64_t pts);