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topology: pre-processor: Add a helper function to concat strings

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The pre-processor needs to concatinate strings separated
by '.' for building object names from constructor attribute
values and searching for configs with ID's containing strings
separate by '.'. Add a helper function to concat strings in
the specified input format.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Ranjani Sridharan 2021-04-23 11:15:59 -07:00 committed by Jaroslav Kysela
parent 94eaca13ce
commit eb514c6bd7
2 changed files with 29 additions and 0 deletions
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27
topology/pre-processor.c
View file

@ -71,6 +71,33 @@ int tplg_config_make_add(snd_config_t **config, const char *id, snd_config_type_
return ret;
}
/*
* The pre-processor will need to concat multiple strings separate by '.' to construct the object
* name and search for configs with ID's separated by '.'.
* This function helps concat input strings in the specified input format
*/
char *tplg_snprintf(char *fmt, ...)
{
char *string;
int len = 1;
va_list va;
va_start(va, fmt);
len += vsnprintf(NULL, 0, fmt, va);
va_end(va);
string = calloc(1, len);
if (!string)
return NULL;
va_start(va, fmt);
vsnprintf(string, len, fmt, va);
va_end(va);
return string;
}
#ifdef TPLG_DEBUG
void tplg_pp_debug(char *fmt, ...)
{

2
topology/pre-processor.h
View file

@ -30,4 +30,6 @@ void tplg_pp_config_debug(struct tplg_pre_processor *tplg_pp, snd_config_t *cfg)
snd_config_t *tplg_find_config(snd_config_t *config, const char *name);
int tplg_config_make_add(snd_config_t **config, const char *id, snd_config_type_t type,
snd_config_t *parent);
char *tplg_snprintf(char *fmt, ...);
#endif