1 /* tinymix.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 <tinyalsa/asoundlib.h>
30 #include <errno.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <ctype.h>
34 #include <string.h>
35 #include <getopt.h>
36 #include <errno.h>
37
38 static void tinymix_list_controls(struct mixer *mixer);
39 static int tinymix_detail_control(struct mixer *mixer, const char *control,
40 int prefix, int print_all);
41 static int tinymix_set_value(struct mixer *mixer, const char *control,
42 char **values, unsigned int num_values);
43 static void tinymix_print_enum(struct mixer_ctl *ctl, const char *space,
44 int print_all);
45
46 static const char *tinymix_short_options = "D:atvh";
47 static struct option tinymix_long_options[] = {
48 {"device", required_argument, 0, 'D'},
49 {"all-values", no_argument, 0, 'a'},
50 {"tabs-only", no_argument, 0, 't'},
51 {"value-only", no_argument, 0, 'v'},
52 {"help", no_argument, 0, 'h'},
53 {0, 0, 0, 0}
54 };
55
56 static int g_tabs_only = 0;
57 static int g_all_values = 0;
58 static int g_value_only = 0;
59
usage(void)60 static void usage (void) {
61 fprintf(stderr,
62 "tinymix [options] [control name/#] [value to set]\n"
63 " options:\n"
64 " --device|-D <card#> - use the given card # instead of 0.\n"
65 " --all-values|-a - show all possible values/ranges for control.\n"
66 " --tabs-only|-t - separate all output columns/values with tabs.\n"
67 " --value-only|-v - show only the value for the selected control.\n"
68 );
69 }
70
main(int argc,char ** argv)71 int main(int argc, char **argv)
72 {
73 struct mixer *mixer;
74 int card = 0;
75 int ret = 0;
76
77 while (1) {
78 int option_index = 0;
79 int option_char = 0;
80
81 option_char = getopt_long(argc, argv, tinymix_short_options,
82 tinymix_long_options, &option_index);
83 if (option_char == -1)
84 break;
85
86 switch (option_char) {
87 case 'D':
88 card = atoi(optarg);
89 break;
90 case 'a':
91 g_all_values = 1;
92 break;
93 case 't':
94 g_tabs_only = 1;
95 break;
96 case 'v':
97 g_value_only = 1;
98 break;
99 case 'h':
100 usage();
101 return 0;
102 default:
103 usage();
104 return EINVAL;
105 }
106 }
107
108 mixer = mixer_open(card);
109 if (!mixer) {
110 fprintf(stderr, "Failed to open mixer\n");
111 return ENODEV;
112 }
113
114 if (argc == optind) {
115 printf("Mixer name: '%s'\n", mixer_get_name(mixer));
116 tinymix_list_controls(mixer);
117 } else if (argc == optind + 1) {
118 ret = tinymix_detail_control(mixer, argv[optind], !g_value_only, !g_value_only);
119 } else if (argc >= optind + 2) {
120 ret = tinymix_set_value(mixer, argv[optind], &argv[optind + 1], argc - optind - 1);
121 }
122
123 mixer_close(mixer);
124
125 return ret;
126 }
127
tinymix_list_controls(struct mixer * mixer)128 static void tinymix_list_controls(struct mixer *mixer)
129 {
130 struct mixer_ctl *ctl;
131 const char *name, *type;
132 unsigned int num_ctls, num_values;
133 unsigned int i;
134
135 num_ctls = mixer_get_num_ctls(mixer);
136
137 printf("Number of controls: %d\n", num_ctls);
138
139 if (g_tabs_only)
140 printf("ctl\ttype\tnum\tname\tvalue");
141 else
142 printf("ctl\ttype\tnum\t%-40s value\n", "name");
143 if (g_all_values)
144 printf("\trange/values\n");
145 else
146 printf("\n");
147 for (i = 0; i < num_ctls; i++) {
148 ctl = mixer_get_ctl(mixer, i);
149
150 name = mixer_ctl_get_name(ctl);
151 type = mixer_ctl_get_type_string(ctl);
152 num_values = mixer_ctl_get_num_values(ctl);
153 if (g_tabs_only)
154 printf("%d\t%s\t%d\t%s\t", i, type, num_values, name);
155 else
156 printf("%d\t%s\t%d\t%-40s ", i, type, num_values, name);
157 tinymix_detail_control(mixer, name, 0, g_all_values);
158 }
159 }
160
tinymix_print_enum(struct mixer_ctl * ctl,const char * space,int print_all)161 static void tinymix_print_enum(struct mixer_ctl *ctl, const char *space,
162 int print_all)
163 {
164 unsigned int num_enums;
165 unsigned int i;
166 const char *string;
167 int control_value = mixer_ctl_get_value(ctl, 0);
168
169 if (print_all) {
170 num_enums = mixer_ctl_get_num_enums(ctl);
171 for (i = 0; i < num_enums; i++) {
172 string = mixer_ctl_get_enum_string(ctl, i);
173 printf("%s%s%s",
174 control_value == (int)i ? ">" : "", string,
175 (i < num_enums - 1) ? space : "");
176 }
177 }
178 else {
179 string = mixer_ctl_get_enum_string(ctl, control_value);
180 printf("%s", string);
181 }
182 }
183
tinymix_detail_control(struct mixer * mixer,const char * control,int prefix,int print_all)184 static int tinymix_detail_control(struct mixer *mixer, const char *control,
185 int prefix, int print_all)
186 {
187 struct mixer_ctl *ctl;
188 enum mixer_ctl_type type;
189 unsigned int num_values;
190 unsigned int i;
191 int min, max;
192 int ret;
193 char *buf = NULL;
194 size_t len;
195 unsigned int tlv_header_size = 0;
196 const char *space = g_tabs_only ? "\t" : " ";
197
198 if (isdigit(control[0]))
199 ctl = mixer_get_ctl(mixer, atoi(control));
200 else
201 ctl = mixer_get_ctl_by_name(mixer, control);
202
203 if (!ctl) {
204 fprintf(stderr, "Invalid mixer control: %s\n", control);
205 return ENOENT;
206 }
207
208 type = mixer_ctl_get_type(ctl);
209 num_values = mixer_ctl_get_num_values(ctl);
210
211 if (type == MIXER_CTL_TYPE_BYTE) {
212 if (mixer_ctl_is_access_tlv_rw(ctl)) {
213 tlv_header_size = TLV_HEADER_SIZE;
214 }
215 buf = calloc(1, num_values + tlv_header_size);
216 if (buf == NULL) {
217 fprintf(stderr, "Failed to alloc mem for bytes %d\n", num_values);
218 return ENOENT;
219 }
220
221 len = num_values;
222 ret = mixer_ctl_get_array(ctl, buf, len + tlv_header_size);
223 if (ret < 0) {
224 fprintf(stderr, "Failed to mixer_ctl_get_array\n");
225 free(buf);
226 return ENOENT;
227 }
228 }
229
230 if (prefix)
231 printf("%s:%s", mixer_ctl_get_name(ctl), space);
232
233 for (i = 0; i < num_values; i++) {
234 switch (type)
235 {
236 case MIXER_CTL_TYPE_INT:
237 printf("%d", mixer_ctl_get_value(ctl, i));
238 break;
239 case MIXER_CTL_TYPE_BOOL:
240 printf("%s", mixer_ctl_get_value(ctl, i) ? "On" : "Off");
241 break;
242 case MIXER_CTL_TYPE_ENUM:
243 tinymix_print_enum(ctl, space, print_all);
244 break;
245 case MIXER_CTL_TYPE_BYTE:
246 /* skip printing TLV header if exists */
247 printf(" %02x", buf[i + tlv_header_size]);
248 break;
249 default:
250 printf("unknown");
251 break;
252 }
253
254 if (i < num_values - 1)
255 printf("%s", space);
256 }
257
258 if (print_all) {
259 if (type == MIXER_CTL_TYPE_INT) {
260 min = mixer_ctl_get_range_min(ctl);
261 max = mixer_ctl_get_range_max(ctl);
262 printf("%s(dsrange %d->%d)", space, min, max);
263 }
264 }
265
266 free(buf);
267
268 printf("\n");
269 return 0;
270 }
271
tinymix_set_byte_ctl(struct mixer_ctl * ctl,char ** values,unsigned int num_values)272 static void tinymix_set_byte_ctl(struct mixer_ctl *ctl,
273 char **values, unsigned int num_values)
274 {
275 int ret;
276 char *buf;
277 char *end;
278 unsigned int i;
279 long n;
280 unsigned int *tlv, tlv_size;
281 unsigned int tlv_header_size = 0;
282
283 if (mixer_ctl_is_access_tlv_rw(ctl)) {
284 tlv_header_size = TLV_HEADER_SIZE;
285 }
286
287 tlv_size = num_values + tlv_header_size;
288
289 buf = calloc(1, tlv_size);
290 if (buf == NULL) {
291 fprintf(stderr, "set_byte_ctl: Failed to alloc mem for bytes %d\n", num_values);
292 exit(EXIT_FAILURE);
293 }
294
295 tlv = (unsigned int *)buf;
296 tlv[0] = 0;
297 tlv[1] = num_values;
298
299 for (i = 0; i < num_values; i++) {
300 errno = 0;
301 n = strtol(values[i], &end, 0);
302 if (*end) {
303 fprintf(stderr, "%s not an integer\n", values[i]);
304 goto fail;
305 }
306 if (errno) {
307 fprintf(stderr, "strtol: %s: %s\n", values[i],
308 strerror(errno));
309 goto fail;
310 }
311 if (n < 0 || n > 0xff) {
312 fprintf(stderr, "%s should be between [0, 0xff]\n",
313 values[i]);
314 goto fail;
315 }
316 /* start filling after the TLV header */
317 buf[i + tlv_header_size] = n;
318 }
319
320 ret = mixer_ctl_set_array(ctl, buf, tlv_size);
321 if (ret < 0) {
322 fprintf(stderr, "Failed to set binary control\n");
323 goto fail;
324 }
325
326 free(buf);
327 return;
328
329 fail:
330 free(buf);
331 exit(EXIT_FAILURE);
332 }
333
tinymix_set_value(struct mixer * mixer,const char * control,char ** values,unsigned int num_values)334 static int tinymix_set_value(struct mixer *mixer, const char *control,
335 char **values, unsigned int num_values)
336 {
337 struct mixer_ctl *ctl;
338 enum mixer_ctl_type type;
339 unsigned int num_ctl_values;
340 unsigned int i;
341
342 if (isdigit(control[0]))
343 ctl = mixer_get_ctl(mixer, atoi(control));
344 else
345 ctl = mixer_get_ctl_by_name(mixer, control);
346
347 if (!ctl) {
348 fprintf(stderr, "Invalid mixer control: %s\n", control);
349 return ENOENT;
350 }
351
352 type = mixer_ctl_get_type(ctl);
353 num_ctl_values = mixer_ctl_get_num_values(ctl);
354
355 if (type == MIXER_CTL_TYPE_BYTE) {
356 tinymix_set_byte_ctl(ctl, values, num_values);
357 return ENOENT;
358 }
359
360 if (isdigit(values[0][0])) {
361 if (num_values == 1) {
362 /* Set all values the same */
363 int value = atoi(values[0]);
364
365 for (i = 0; i < num_ctl_values; i++) {
366 if (mixer_ctl_set_value(ctl, i, value)) {
367 fprintf(stderr, "Error: invalid value\n");
368 return EINVAL;
369 }
370 }
371 } else {
372 /* Set multiple values */
373 if (num_values > num_ctl_values) {
374 fprintf(stderr,
375 "Error: %d values given, but control only takes %d\n",
376 num_values, num_ctl_values);
377 return EINVAL;
378 }
379 for (i = 0; i < num_values; i++) {
380 if (mixer_ctl_set_value(ctl, i, atoi(values[i]))) {
381 fprintf(stderr, "Error: invalid value for index %d\n", i);
382 return EINVAL;
383 }
384 }
385 }
386 } else {
387 if (type == MIXER_CTL_TYPE_ENUM) {
388 if (num_values != 1) {
389 fprintf(stderr, "Enclose strings in quotes and try again\n");
390 return EINVAL;
391 }
392 if (mixer_ctl_set_enum_by_string(ctl, values[0])) {
393 fprintf(stderr, "Error: invalid enum value\n");
394 return EINVAL;
395 }
396 } else {
397 fprintf(stderr, "Error: only enum types can be set with strings\n");
398 return EINVAL;
399 }
400 }
401
402 return 0;
403 }
404