1 /*
2 Copyright(c) 2014-2015 Intel Corporation
3 All rights reserved.
4
5 This library is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as
7 published by the Free Software Foundation; either version 2.1 of
8 the License, or (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
14
15 Authors: Mengdong Lin <mengdong.lin@intel.com>
16 Yao Jin <yao.jin@intel.com>
17 Liam Girdwood <liam.r.girdwood@linux.intel.com>
18
19 */
20
21 #include "tplg_local.h"
22
23 #define TEXT_SIZE_MAX \
24 (SND_SOC_TPLG_NUM_TEXTS * SNDRV_CTL_ELEM_ID_NAME_MAXLEN)
25
parse_text_values(snd_config_t *cfg, struct tplg_elem *elem)26 static int parse_text_values(snd_config_t *cfg, struct tplg_elem *elem)
27 {
28 struct tplg_texts *texts = elem->texts;
29 snd_config_iterator_t i, next;
30 snd_config_t *n;
31 const char *value = NULL;
32 int j = 0;
33
34 tplg_dbg(" Text Values: %s", elem->id);
35
36 snd_config_for_each(i, next, cfg) {
37 n = snd_config_iterator_entry(i);
38
39 if (j == SND_SOC_TPLG_NUM_TEXTS) {
40 tplg_dbg("text string number exceeds %d", j);
41 return -ENOMEM;
42 }
43
44 /* get value */
45 if (snd_config_get_string(n, &value) < 0)
46 continue;
47
48 snd_strlcpy(&texts->items[j][0], value,
49 SNDRV_CTL_ELEM_ID_NAME_MAXLEN);
50 tplg_dbg("\t%s", &texts->items[j][0]);
51
52 j++;
53 }
54
55 texts->num_items = j;
56 return 0;
57 }
58
59 /* Parse Text data */
tplg_parse_text(snd_tplg_t *tplg, snd_config_t *cfg, void *private ATTRIBUTE_UNUSED)60 int tplg_parse_text(snd_tplg_t *tplg, snd_config_t *cfg,
61 void *private ATTRIBUTE_UNUSED)
62 {
63 snd_config_iterator_t i, next;
64 snd_config_t *n;
65 const char *id;
66 int err = 0;
67 struct tplg_elem *elem;
68
69 elem = tplg_elem_new_common(tplg, cfg, NULL, SND_TPLG_TYPE_TEXT);
70 if (!elem)
71 return -ENOMEM;
72
73 snd_config_for_each(i, next, cfg) {
74
75 n = snd_config_iterator_entry(i);
76 if (snd_config_get_id(n, &id) < 0)
77 continue;
78
79 if (strcmp(id, "values") == 0) {
80 err = parse_text_values(n, elem);
81 if (err < 0) {
82 SNDERR("error: failed to parse text values");
83 return err;
84 }
85 continue;
86 }
87 }
88
89 return err;
90 }
91
92 /* save text data */
tplg_save_text(snd_tplg_t *tplg ATTRIBUTE_UNUSED, struct tplg_elem *elem, struct tplg_buf *dst, const char *pfx)93 int tplg_save_text(snd_tplg_t *tplg ATTRIBUTE_UNUSED,
94 struct tplg_elem *elem,
95 struct tplg_buf *dst, const char *pfx)
96 {
97 struct tplg_texts *texts = elem->texts;
98 unsigned int i;
99 int err;
100
101 if (!texts || texts->num_items == 0)
102 return 0;
103 err = tplg_save_printf(dst, pfx, "'%s'.values [\n", elem->id);
104 for (i = 0; err >= 0 && i < texts->num_items; i++)
105 err = tplg_save_printf(dst, pfx, "\t'%s'\n", texts->items[i]);
106 if (err >= 0)
107 err = tplg_save_printf(dst, pfx, "]\n");
108 return err;
109 }
110