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topology: Add text section parser.

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Parse text lists (like enum values) and store for later attachment
to other objects.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Liam Girdwood 2015-07-29 17:45:15 +01:00 • committed by Takashi Iwai
parent 37692bb985
commit 408396a8ca
1 changed files with 88 additions and 0 deletions
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src/topology/text.c Normal file
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/*
Copyright(c) 2014-2015 Intel Corporation
All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
Authors: Mengdong Lin <mengdong.lin@intel.com>
Yao Jin <yao.jin@intel.com>
Liam Girdwood <liam.r.girdwood@linux.intel.com>
*/
#include "list.h"
#include "tplg_local.h"
#define TEXT_SIZE_MAX \
(SND_SOC_TPLG_NUM_TEXTS * SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
static int parse_text_values(snd_config_t *cfg, struct tplg_elem *elem)
{
snd_config_iterator_t i, next;
snd_config_t *n;
const char *value = NULL;
int j = 0;
tplg_dbg(" Text Values: %s\n", elem->id);
snd_config_for_each(i, next, cfg) {
n = snd_config_iterator_entry(i);
if (j == SND_SOC_TPLG_NUM_TEXTS) {
tplg_dbg("error: text string number exceeds %d\n", j);
return -ENOMEM;
}
/* get value */
if (snd_config_get_string(n, &value) < 0)
continue;
elem_copy_text(&elem->texts[j][0], value,
SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
tplg_dbg("\t%s\n", &elem->texts[j][0]);
j++;
}
return 0;
}
/* Parse Text data */
int tplg_parse_text(snd_tplg_t *tplg, snd_config_t *cfg,
void *private ATTRIBUTE_UNUSED)
{
snd_config_iterator_t i, next;
snd_config_t *n;
const char *id;
int err = 0;
struct tplg_elem *elem;
elem = tplg_elem_new_common(tplg, cfg, OBJECT_TYPE_TEXT);
if (!elem)
return -ENOMEM;
snd_config_for_each(i, next, cfg) {
n = snd_config_iterator_entry(i);
if (snd_config_get_id(n, &id) < 0)
continue;
if (strcmp(id, "values") == 0) {
err = parse_text_values(n, elem);
if (err < 0) {
SNDERR("error: failed to parse text values");
return err;
}
continue;
}
}
return err;
}