diff options
Diffstat (limited to 'firmware/target/hosted/ibasso/tinyalsa/mixer.c')
-rw-r--r-- | firmware/target/hosted/ibasso/tinyalsa/mixer.c | 502 |
1 files changed, 502 insertions, 0 deletions
diff --git a/firmware/target/hosted/ibasso/tinyalsa/mixer.c b/firmware/target/hosted/ibasso/tinyalsa/mixer.c new file mode 100644 index 0000000000..24e94f4f1d --- /dev/null +++ b/firmware/target/hosted/ibasso/tinyalsa/mixer.c | |||
@@ -0,0 +1,502 @@ | |||
1 | /* mixer.c | ||
2 | ** | ||
3 | ** Copyright 2011, The Android Open Source Project | ||
4 | ** | ||
5 | ** Redistribution and use in source and binary forms, with or without | ||
6 | ** modification, are permitted provided that the following conditions are met: | ||
7 | ** * Redistributions of source code must retain the above copyright | ||
8 | ** notice, this list of conditions and the following disclaimer. | ||
9 | ** * Redistributions in binary form must reproduce the above copyright | ||
10 | ** notice, this list of conditions and the following disclaimer in the | ||
11 | ** documentation and/or other materials provided with the distribution. | ||
12 | ** * Neither the name of The Android Open Source Project nor the names of | ||
13 | ** its contributors may be used to endorse or promote products derived | ||
14 | ** from this software without specific prior written permission. | ||
15 | ** | ||
16 | ** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND | ||
17 | ** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
18 | ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
19 | ** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE | ||
20 | ** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
21 | ** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | ||
22 | ** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | ||
23 | ** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
24 | ** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
25 | ** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | ||
26 | ** DAMAGE. | ||
27 | */ | ||
28 | |||
29 | #include <stdio.h> | ||
30 | #include <stdlib.h> | ||
31 | #include <string.h> | ||
32 | #include <unistd.h> | ||
33 | #include <fcntl.h> | ||
34 | #include <errno.h> | ||
35 | #include <ctype.h> | ||
36 | |||
37 | #include <sys/ioctl.h> | ||
38 | |||
39 | #include <linux/ioctl.h> | ||
40 | #define __force | ||
41 | #define __bitwise | ||
42 | #define __user | ||
43 | #include <sound/asound.h> | ||
44 | |||
45 | #include <tinyalsa/asoundlib.h> | ||
46 | |||
47 | struct mixer_ctl { | ||
48 | struct mixer *mixer; | ||
49 | struct snd_ctl_elem_info *info; | ||
50 | char **ename; | ||
51 | }; | ||
52 | |||
53 | struct mixer { | ||
54 | int fd; | ||
55 | struct snd_ctl_card_info card_info; | ||
56 | struct snd_ctl_elem_info *elem_info; | ||
57 | struct mixer_ctl *ctl; | ||
58 | unsigned int count; | ||
59 | }; | ||
60 | |||
61 | void mixer_close(struct mixer *mixer) | ||
62 | { | ||
63 | unsigned int n,m; | ||
64 | |||
65 | if (!mixer) | ||
66 | return; | ||
67 | |||
68 | if (mixer->fd >= 0) | ||
69 | close(mixer->fd); | ||
70 | |||
71 | if (mixer->ctl) { | ||
72 | for (n = 0; n < mixer->count; n++) { | ||
73 | if (mixer->ctl[n].ename) { | ||
74 | unsigned int max = mixer->ctl[n].info->value.enumerated.items; | ||
75 | for (m = 0; m < max; m++) | ||
76 | free(mixer->ctl[n].ename[m]); | ||
77 | free(mixer->ctl[n].ename); | ||
78 | } | ||
79 | } | ||
80 | free(mixer->ctl); | ||
81 | } | ||
82 | |||
83 | if (mixer->elem_info) | ||
84 | free(mixer->elem_info); | ||
85 | |||
86 | free(mixer); | ||
87 | |||
88 | /* TODO: verify frees */ | ||
89 | } | ||
90 | |||
91 | struct mixer *mixer_open(unsigned int card) | ||
92 | { | ||
93 | struct snd_ctl_elem_list elist; | ||
94 | struct snd_ctl_elem_info tmp; | ||
95 | struct snd_ctl_elem_id *eid = NULL; | ||
96 | struct mixer *mixer = NULL; | ||
97 | unsigned int n, m; | ||
98 | int fd; | ||
99 | char fn[256]; | ||
100 | |||
101 | snprintf(fn, sizeof(fn), "/dev/snd/controlC%u", card); | ||
102 | fd = open(fn, O_RDWR); | ||
103 | if (fd < 0) | ||
104 | return 0; | ||
105 | |||
106 | memset(&elist, 0, sizeof(elist)); | ||
107 | if (ioctl(fd, SNDRV_CTL_IOCTL_ELEM_LIST, &elist) < 0) | ||
108 | goto fail; | ||
109 | |||
110 | mixer = calloc(1, sizeof(*mixer)); | ||
111 | if (!mixer) | ||
112 | goto fail; | ||
113 | |||
114 | mixer->ctl = calloc(elist.count, sizeof(struct mixer_ctl)); | ||
115 | mixer->elem_info = calloc(elist.count, sizeof(struct snd_ctl_elem_info)); | ||
116 | if (!mixer->ctl || !mixer->elem_info) | ||
117 | goto fail; | ||
118 | |||
119 | if (ioctl(fd, SNDRV_CTL_IOCTL_CARD_INFO, &mixer->card_info) < 0) | ||
120 | goto fail; | ||
121 | |||
122 | eid = calloc(elist.count, sizeof(struct snd_ctl_elem_id)); | ||
123 | if (!eid) | ||
124 | goto fail; | ||
125 | |||
126 | mixer->count = elist.count; | ||
127 | mixer->fd = fd; | ||
128 | elist.space = mixer->count; | ||
129 | elist.pids = eid; | ||
130 | if (ioctl(fd, SNDRV_CTL_IOCTL_ELEM_LIST, &elist) < 0) | ||
131 | goto fail; | ||
132 | |||
133 | for (n = 0; n < mixer->count; n++) { | ||
134 | struct snd_ctl_elem_info *ei = mixer->elem_info + n; | ||
135 | ei->id.numid = eid[n].numid; | ||
136 | if (ioctl(fd, SNDRV_CTL_IOCTL_ELEM_INFO, ei) < 0) | ||
137 | goto fail; | ||
138 | mixer->ctl[n].info = ei; | ||
139 | mixer->ctl[n].mixer = mixer; | ||
140 | if (ei->type == SNDRV_CTL_ELEM_TYPE_ENUMERATED) { | ||
141 | char **enames = calloc(ei->value.enumerated.items, sizeof(char*)); | ||
142 | if (!enames) | ||
143 | goto fail; | ||
144 | mixer->ctl[n].ename = enames; | ||
145 | for (m = 0; m < ei->value.enumerated.items; m++) { | ||
146 | memset(&tmp, 0, sizeof(tmp)); | ||
147 | tmp.id.numid = ei->id.numid; | ||
148 | tmp.value.enumerated.item = m; | ||
149 | if (ioctl(fd, SNDRV_CTL_IOCTL_ELEM_INFO, &tmp) < 0) | ||
150 | goto fail; | ||
151 | enames[m] = strdup(tmp.value.enumerated.name); | ||
152 | if (!enames[m]) | ||
153 | goto fail; | ||
154 | } | ||
155 | } | ||
156 | } | ||
157 | |||
158 | free(eid); | ||
159 | return mixer; | ||
160 | |||
161 | fail: | ||
162 | /* TODO: verify frees in failure case */ | ||
163 | if (eid) | ||
164 | free(eid); | ||
165 | if (mixer) | ||
166 | mixer_close(mixer); | ||
167 | else if (fd >= 0) | ||
168 | close(fd); | ||
169 | return 0; | ||
170 | } | ||
171 | |||
172 | const char *mixer_get_name(struct mixer *mixer) | ||
173 | { | ||
174 | return (const char *)mixer->card_info.name; | ||
175 | } | ||
176 | |||
177 | unsigned int mixer_get_num_ctls(struct mixer *mixer) | ||
178 | { | ||
179 | if (!mixer) | ||
180 | return 0; | ||
181 | |||
182 | return mixer->count; | ||
183 | } | ||
184 | |||
185 | struct mixer_ctl *mixer_get_ctl(struct mixer *mixer, unsigned int id) | ||
186 | { | ||
187 | if (mixer && (id < mixer->count)) | ||
188 | return mixer->ctl + id; | ||
189 | |||
190 | return NULL; | ||
191 | } | ||
192 | |||
193 | struct mixer_ctl *mixer_get_ctl_by_name(struct mixer *mixer, const char *name) | ||
194 | { | ||
195 | unsigned int n; | ||
196 | |||
197 | if (!mixer) | ||
198 | return NULL; | ||
199 | |||
200 | for (n = 0; n < mixer->count; n++) | ||
201 | if (!strcmp(name, (char*) mixer->elem_info[n].id.name)) | ||
202 | return mixer->ctl + n; | ||
203 | |||
204 | return NULL; | ||
205 | } | ||
206 | |||
207 | void mixer_ctl_update(struct mixer_ctl *ctl) | ||
208 | { | ||
209 | ioctl(ctl->mixer->fd, SNDRV_CTL_IOCTL_ELEM_INFO, ctl->info); | ||
210 | } | ||
211 | |||
212 | const char *mixer_ctl_get_name(struct mixer_ctl *ctl) | ||
213 | { | ||
214 | if (!ctl) | ||
215 | return NULL; | ||
216 | |||
217 | return (const char *)ctl->info->id.name; | ||
218 | } | ||
219 | |||
220 | enum mixer_ctl_type mixer_ctl_get_type(struct mixer_ctl *ctl) | ||
221 | { | ||
222 | if (!ctl) | ||
223 | return MIXER_CTL_TYPE_UNKNOWN; | ||
224 | |||
225 | switch (ctl->info->type) { | ||
226 | case SNDRV_CTL_ELEM_TYPE_BOOLEAN: return MIXER_CTL_TYPE_BOOL; | ||
227 | case SNDRV_CTL_ELEM_TYPE_INTEGER: return MIXER_CTL_TYPE_INT; | ||
228 | case SNDRV_CTL_ELEM_TYPE_ENUMERATED: return MIXER_CTL_TYPE_ENUM; | ||
229 | case SNDRV_CTL_ELEM_TYPE_BYTES: return MIXER_CTL_TYPE_BYTE; | ||
230 | case SNDRV_CTL_ELEM_TYPE_IEC958: return MIXER_CTL_TYPE_IEC958; | ||
231 | case SNDRV_CTL_ELEM_TYPE_INTEGER64: return MIXER_CTL_TYPE_INT64; | ||
232 | default: return MIXER_CTL_TYPE_UNKNOWN; | ||
233 | }; | ||
234 | } | ||
235 | |||
236 | const char *mixer_ctl_get_type_string(struct mixer_ctl *ctl) | ||
237 | { | ||
238 | if (!ctl) | ||
239 | return ""; | ||
240 | |||
241 | switch (ctl->info->type) { | ||
242 | case SNDRV_CTL_ELEM_TYPE_BOOLEAN: return "BOOL"; | ||
243 | case SNDRV_CTL_ELEM_TYPE_INTEGER: return "INT"; | ||
244 | case SNDRV_CTL_ELEM_TYPE_ENUMERATED: return "ENUM"; | ||
245 | case SNDRV_CTL_ELEM_TYPE_BYTES: return "BYTE"; | ||
246 | case SNDRV_CTL_ELEM_TYPE_IEC958: return "IEC958"; | ||
247 | case SNDRV_CTL_ELEM_TYPE_INTEGER64: return "INT64"; | ||
248 | default: return "Unknown"; | ||
249 | }; | ||
250 | } | ||
251 | |||
252 | unsigned int mixer_ctl_get_num_values(struct mixer_ctl *ctl) | ||
253 | { | ||
254 | if (!ctl) | ||
255 | return 0; | ||
256 | |||
257 | return ctl->info->count; | ||
258 | } | ||
259 | |||
260 | static int percent_to_int(struct snd_ctl_elem_info *ei, int percent) | ||
261 | { | ||
262 | if ((percent > 100) || (percent < 0)) { | ||
263 | return -EINVAL; | ||
264 | } | ||
265 | |||
266 | int range = (ei->value.integer.max - ei->value.integer.min); | ||
267 | |||
268 | return ei->value.integer.min + (range * percent) / 100; | ||
269 | } | ||
270 | |||
271 | static int int_to_percent(struct snd_ctl_elem_info *ei, int value) | ||
272 | { | ||
273 | int range = (ei->value.integer.max - ei->value.integer.min); | ||
274 | |||
275 | if (range == 0) | ||
276 | return 0; | ||
277 | |||
278 | return ((value - ei->value.integer.min) / range) * 100; | ||
279 | } | ||
280 | |||
281 | int mixer_ctl_get_percent(struct mixer_ctl *ctl, unsigned int id) | ||
282 | { | ||
283 | if (!ctl || (ctl->info->type != SNDRV_CTL_ELEM_TYPE_INTEGER)) | ||
284 | return -EINVAL; | ||
285 | |||
286 | return int_to_percent(ctl->info, mixer_ctl_get_value(ctl, id)); | ||
287 | } | ||
288 | |||
289 | int mixer_ctl_set_percent(struct mixer_ctl *ctl, unsigned int id, int percent) | ||
290 | { | ||
291 | if (!ctl || (ctl->info->type != SNDRV_CTL_ELEM_TYPE_INTEGER)) | ||
292 | return -EINVAL; | ||
293 | |||
294 | return mixer_ctl_set_value(ctl, id, percent_to_int(ctl->info, percent)); | ||
295 | } | ||
296 | |||
297 | int mixer_ctl_get_value(struct mixer_ctl *ctl, unsigned int id) | ||
298 | { | ||
299 | struct snd_ctl_elem_value ev; | ||
300 | int ret; | ||
301 | |||
302 | if (!ctl || (id >= ctl->info->count)) | ||
303 | return -EINVAL; | ||
304 | |||
305 | memset(&ev, 0, sizeof(ev)); | ||
306 | ev.id.numid = ctl->info->id.numid; | ||
307 | ret = ioctl(ctl->mixer->fd, SNDRV_CTL_IOCTL_ELEM_READ, &ev); | ||
308 | if (ret < 0) | ||
309 | return ret; | ||
310 | |||
311 | switch (ctl->info->type) { | ||
312 | case SNDRV_CTL_ELEM_TYPE_BOOLEAN: | ||
313 | return !!ev.value.integer.value[id]; | ||
314 | |||
315 | case SNDRV_CTL_ELEM_TYPE_INTEGER: | ||
316 | return ev.value.integer.value[id]; | ||
317 | |||
318 | case SNDRV_CTL_ELEM_TYPE_ENUMERATED: | ||
319 | return ev.value.enumerated.item[id]; | ||
320 | |||
321 | case SNDRV_CTL_ELEM_TYPE_BYTES: | ||
322 | return ev.value.bytes.data[id]; | ||
323 | |||
324 | default: | ||
325 | return -EINVAL; | ||
326 | } | ||
327 | |||
328 | return 0; | ||
329 | } | ||
330 | |||
331 | int mixer_ctl_get_array(struct mixer_ctl *ctl, void *array, size_t count) | ||
332 | { | ||
333 | struct snd_ctl_elem_value ev; | ||
334 | int ret; | ||
335 | size_t size; | ||
336 | void *source; | ||
337 | |||
338 | if (!ctl || (count > ctl->info->count) || !count || !array) | ||
339 | return -EINVAL; | ||
340 | |||
341 | memset(&ev, 0, sizeof(ev)); | ||
342 | ev.id.numid = ctl->info->id.numid; | ||
343 | |||
344 | ret = ioctl(ctl->mixer->fd, SNDRV_CTL_IOCTL_ELEM_READ, &ev); | ||
345 | if (ret < 0) | ||
346 | return ret; | ||
347 | |||
348 | switch (ctl->info->type) { | ||
349 | case SNDRV_CTL_ELEM_TYPE_BOOLEAN: | ||
350 | case SNDRV_CTL_ELEM_TYPE_INTEGER: | ||
351 | size = sizeof(ev.value.integer.value[0]); | ||
352 | source = ev.value.integer.value; | ||
353 | break; | ||
354 | |||
355 | case SNDRV_CTL_ELEM_TYPE_BYTES: | ||
356 | size = sizeof(ev.value.bytes.data[0]); | ||
357 | source = ev.value.bytes.data; | ||
358 | break; | ||
359 | |||
360 | default: | ||
361 | return -EINVAL; | ||
362 | } | ||
363 | |||
364 | memcpy(array, source, size * count); | ||
365 | |||
366 | return 0; | ||
367 | } | ||
368 | |||
369 | int mixer_ctl_set_value(struct mixer_ctl *ctl, unsigned int id, int value) | ||
370 | { | ||
371 | struct snd_ctl_elem_value ev; | ||
372 | int ret; | ||
373 | |||
374 | if (!ctl || (id >= ctl->info->count)) | ||
375 | return -EINVAL; | ||
376 | |||
377 | memset(&ev, 0, sizeof(ev)); | ||
378 | ev.id.numid = ctl->info->id.numid; | ||
379 | ret = ioctl(ctl->mixer->fd, SNDRV_CTL_IOCTL_ELEM_READ, &ev); | ||
380 | if (ret < 0) | ||
381 | return ret; | ||
382 | |||
383 | switch (ctl->info->type) { | ||
384 | case SNDRV_CTL_ELEM_TYPE_BOOLEAN: | ||
385 | ev.value.integer.value[id] = !!value; | ||
386 | break; | ||
387 | |||
388 | case SNDRV_CTL_ELEM_TYPE_INTEGER: | ||
389 | if ((value < mixer_ctl_get_range_min(ctl)) || | ||
390 | (value > mixer_ctl_get_range_max(ctl))) { | ||
391 | return -EINVAL; | ||
392 | } | ||
393 | |||
394 | ev.value.integer.value[id] = value; | ||
395 | break; | ||
396 | |||
397 | case SNDRV_CTL_ELEM_TYPE_ENUMERATED: | ||
398 | ev.value.enumerated.item[id] = value; | ||
399 | break; | ||
400 | |||
401 | case SNDRV_CTL_ELEM_TYPE_BYTES: | ||
402 | ev.value.bytes.data[id] = value; | ||
403 | break; | ||
404 | |||
405 | default: | ||
406 | return -EINVAL; | ||
407 | } | ||
408 | |||
409 | return ioctl(ctl->mixer->fd, SNDRV_CTL_IOCTL_ELEM_WRITE, &ev); | ||
410 | } | ||
411 | |||
412 | int mixer_ctl_set_array(struct mixer_ctl *ctl, const void *array, size_t count) | ||
413 | { | ||
414 | struct snd_ctl_elem_value ev; | ||
415 | size_t size; | ||
416 | void *dest; | ||
417 | |||
418 | if (!ctl || (count > ctl->info->count) || !count || !array) | ||
419 | return -EINVAL; | ||
420 | |||
421 | memset(&ev, 0, sizeof(ev)); | ||
422 | ev.id.numid = ctl->info->id.numid; | ||
423 | |||
424 | switch (ctl->info->type) { | ||
425 | case SNDRV_CTL_ELEM_TYPE_BOOLEAN: | ||
426 | case SNDRV_CTL_ELEM_TYPE_INTEGER: | ||
427 | size = sizeof(ev.value.integer.value[0]); | ||
428 | dest = ev.value.integer.value; | ||
429 | break; | ||
430 | |||
431 | case SNDRV_CTL_ELEM_TYPE_BYTES: | ||
432 | size = sizeof(ev.value.bytes.data[0]); | ||
433 | dest = ev.value.bytes.data; | ||
434 | break; | ||
435 | |||
436 | default: | ||
437 | return -EINVAL; | ||
438 | } | ||
439 | |||
440 | memcpy(dest, array, size * count); | ||
441 | |||
442 | return ioctl(ctl->mixer->fd, SNDRV_CTL_IOCTL_ELEM_WRITE, &ev); | ||
443 | } | ||
444 | |||
445 | int mixer_ctl_get_range_min(struct mixer_ctl *ctl) | ||
446 | { | ||
447 | if (!ctl || (ctl->info->type != SNDRV_CTL_ELEM_TYPE_INTEGER)) | ||
448 | return -EINVAL; | ||
449 | |||
450 | return ctl->info->value.integer.min; | ||
451 | } | ||
452 | |||
453 | int mixer_ctl_get_range_max(struct mixer_ctl *ctl) | ||
454 | { | ||
455 | if (!ctl || (ctl->info->type != SNDRV_CTL_ELEM_TYPE_INTEGER)) | ||
456 | return -EINVAL; | ||
457 | |||
458 | return ctl->info->value.integer.max; | ||
459 | } | ||
460 | |||
461 | unsigned int mixer_ctl_get_num_enums(struct mixer_ctl *ctl) | ||
462 | { | ||
463 | if (!ctl) | ||
464 | return 0; | ||
465 | |||
466 | return ctl->info->value.enumerated.items; | ||
467 | } | ||
468 | |||
469 | const char *mixer_ctl_get_enum_string(struct mixer_ctl *ctl, | ||
470 | unsigned int enum_id) | ||
471 | { | ||
472 | if (!ctl || (ctl->info->type != SNDRV_CTL_ELEM_TYPE_ENUMERATED) || | ||
473 | (enum_id >= ctl->info->value.enumerated.items)) | ||
474 | return NULL; | ||
475 | |||
476 | return (const char *)ctl->ename[enum_id]; | ||
477 | } | ||
478 | |||
479 | int mixer_ctl_set_enum_by_string(struct mixer_ctl *ctl, const char *string) | ||
480 | { | ||
481 | unsigned int i, num_enums; | ||
482 | struct snd_ctl_elem_value ev; | ||
483 | int ret; | ||
484 | |||
485 | if (!ctl || (ctl->info->type != SNDRV_CTL_ELEM_TYPE_ENUMERATED)) | ||
486 | return -EINVAL; | ||
487 | |||
488 | num_enums = ctl->info->value.enumerated.items; | ||
489 | for (i = 0; i < num_enums; i++) { | ||
490 | if (!strcmp(string, ctl->ename[i])) { | ||
491 | memset(&ev, 0, sizeof(ev)); | ||
492 | ev.value.enumerated.item[0] = i; | ||
493 | ev.id.numid = ctl->info->id.numid; | ||
494 | ret = ioctl(ctl->mixer->fd, SNDRV_CTL_IOCTL_ELEM_WRITE, &ev); | ||
495 | if (ret < 0) | ||
496 | return ret; | ||
497 | return 0; | ||
498 | } | ||
499 | } | ||
500 | |||
501 | return -EINVAL; | ||
502 | } | ||