1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
#include <ctype.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "hashmap.h"
#include "modargs.h"
#include "idxset.h"
#include "sample-util.h"
#include "namereg.h"
#include "sink.h"
#include "source.h"
struct pa_modargs;
struct entry {
char *key, *value;
};
static int add_key_value(struct pa_hashmap *map, char *key, char *value, const char* const* valid_keys) {
struct entry *e;
assert(map && key && value);
if (valid_keys) {
const char*const* v;
for (v = valid_keys; *v; v++)
if (strcmp(*v, key) == 0)
break;
if (!*v) {
free(key);
free(value);
return -1;
}
}
e = malloc(sizeof(struct entry));
assert(e);
e->key = key;
e->value = value;
pa_hashmap_put(map, key, e);
return 0;
}
struct pa_modargs *pa_modargs_new(const char *args, const char* const* valid_keys) {
struct pa_hashmap *map = NULL;
map = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
assert(map);
if (args) {
enum { WHITESPACE, KEY, VALUE_START, VALUE_SIMPLE, VALUE_DOUBLE_QUOTES, VALUE_TICKS } state;
const char *p, *key, *value;
size_t key_len, value_len;
key = value = NULL;
state = WHITESPACE;
for (p = args; *p; p++) {
switch (state) {
case WHITESPACE:
if (*p == '=')
goto fail;
else if (!isspace(*p)) {
key = p;
state = KEY;
key_len = 1;
}
break;
case KEY:
if (*p == '=')
state = VALUE_START;
else
key_len++;
break;
case VALUE_START:
if (*p == '\'') {
state = VALUE_TICKS;
value = p+1;
value_len = 0;
} else if (*p == '"') {
state = VALUE_DOUBLE_QUOTES;
value = p+1;
value_len = 0;
} else if (isspace(*p)) {
if (add_key_value(map, strndup(key, key_len), strdup(""), valid_keys) < 0)
goto fail;
state = WHITESPACE;
} else {
state = VALUE_SIMPLE;
value = p;
value_len = 1;
}
break;
case VALUE_SIMPLE:
if (isspace(*p)) {
if (add_key_value(map, strndup(key, key_len), strndup(value, value_len), valid_keys) < 0)
goto fail;
state = WHITESPACE;
} else
value_len++;
break;
case VALUE_DOUBLE_QUOTES:
if (*p == '"') {
if (add_key_value(map, strndup(key, key_len), strndup(value, value_len), valid_keys) < 0)
goto fail;
state = WHITESPACE;
} else
value_len++;
break;
case VALUE_TICKS:
if (*p == '\'') {
if (add_key_value(map, strndup(key, key_len), strndup(value, value_len), valid_keys) < 0)
goto fail;
state = WHITESPACE;
} else
value_len++;
break;
}
}
if (state == VALUE_START) {
if (add_key_value(map, strndup(key, key_len), strdup(""), valid_keys) < 0)
goto fail;
} else if (state == VALUE_SIMPLE) {
if (add_key_value(map, strndup(key, key_len), strdup(value), valid_keys) < 0)
goto fail;
} else if (state != WHITESPACE)
goto fail;
}
return (struct pa_modargs*) map;
fail:
if (map)
pa_modargs_free((struct pa_modargs*) map);
return NULL;
}
static void free_func(void *p, void*userdata) {
struct entry *e = p;
assert(e);
free(e->key);
free(e->value);
free(e);
}
void pa_modargs_free(struct pa_modargs*ma) {
struct pa_hashmap *map = (struct pa_hashmap*) ma;
pa_hashmap_free(map, free_func, NULL);
}
const char *pa_modargs_get_value(struct pa_modargs *ma, const char *key, const char *def) {
struct pa_hashmap *map = (struct pa_hashmap*) ma;
struct entry*e;
if (!(e = pa_hashmap_get(map, key)))
return def;
return e->value;
}
int pa_modargs_get_value_u32(struct pa_modargs *ma, const char *key, uint32_t *value) {
const char *v;
char *e;
unsigned long l;
assert(ma && key && value);
if (!(v = pa_modargs_get_value(ma, key, NULL)))
return 0;
if (!*v)
return -1;
l = strtoul(v, &e, 0);
if (*e)
return -1;
*value = (uint32_t) l;
return 0;
}
int pa_modargs_get_sample_spec(struct pa_modargs *ma, struct pa_sample_spec *rss) {
const char *format;
uint32_t channels;
struct pa_sample_spec ss;
assert(ma && rss);
ss = *rss;
if ((pa_modargs_get_value_u32(ma, "rate", &ss.rate)) < 0)
return -1;
channels = ss.channels;
if ((pa_modargs_get_value_u32(ma, "channels", &channels)) < 0)
return -1;
ss.channels = (uint8_t) channels;
if ((format = pa_modargs_get_value(ma, "format", NULL))) {
if (strcmp(format, "s16le") == 0)
ss.format = PA_SAMPLE_S16LE;
else if (strcmp(format, "s16be") == 0)
ss.format = PA_SAMPLE_S16BE;
else if (strcmp(format, "s16ne") == 0 || strcmp(format, "s16") == 0 || strcmp(format, "16") == 0)
ss.format = PA_SAMPLE_S16NE;
else if (strcmp(format, "u8") == 0 || strcmp(format, "8") == 0)
ss.format = PA_SAMPLE_U8;
else if (strcmp(format, "float32") == 0)
ss.format = PA_SAMPLE_FLOAT32;
else if (strcmp(format, "ulaw") == 0)
ss.format = PA_SAMPLE_ULAW;
else if (strcmp(format, "alaw") == 0)
ss.format = PA_SAMPLE_ALAW;
else
return -1;
}
if (!pa_sample_spec_valid(&ss))
return -1;
*rss = ss;
return 0;
}
int pa_modargs_get_source_index(struct pa_modargs *ma, struct pa_core *c, uint32_t *index) {
const char *t;
assert(ma && index);
if (!(t = pa_modargs_get_value(ma, "source", NULL)))
*index = PA_IDXSET_INVALID;
else {
struct pa_source *source;
if (!(source = pa_namereg_get(c, t, PA_NAMEREG_SOURCE)))
return -1;
*index = source->index;
}
return 0;
}
int pa_modargs_get_sink_index(struct pa_modargs *ma, struct pa_core *c, uint32_t *index) {
const char *t;
assert(ma && index);
if (!(t = pa_modargs_get_value(ma, "sink", NULL)))
*index = PA_IDXSET_INVALID;
else {
struct pa_sink *sink;
if (!(sink = pa_namereg_get(c, t, PA_NAMEREG_SINK)))
return -1;
*index = sink->index;
}
return 0;
}
|
