1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "offload_effect_equalizer"
18 //#define LOG_NDEBUG 0
19
20 #include <cutils/list.h>
21 #include <cutils/log.h>
22 #include <tinyalsa/asoundlib.h>
23 #include <sound/audio_effects.h>
24 #include <audio_effects/effect_equalizer.h>
25
26 #include "effect_api.h"
27 #include "equalizer.h"
28
29 /* Offload equalizer UUID: a0dac280-401c-11e3-9379-0002a5d5c51b */
30 const effect_descriptor_t equalizer_descriptor = {
31 {0x0bed4300, 0xddd6, 0x11db, 0x8f34, {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}}, // type
32 {0xa0dac280, 0x401c, 0x11e3, 0x9379, {0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b}}, // uuid
33 EFFECT_CONTROL_API_VERSION,
34 (EFFECT_FLAG_TYPE_INSERT | EFFECT_FLAG_HW_ACC_TUNNEL),
35 0, /* TODO */
36 1,
37 "MSM offload equalizer",
38 "The Android Open Source Project",
39 };
40
41 static const char *equalizer_preset_names[] = {
42 "Normal",
43 "Classical",
44 "Dance",
45 "Flat",
46 "Folk",
47 "Heavy Metal",
48 "Hip Hop",
49 "Jazz",
50 "Pop",
51 "Rock"
52 };
53
54 static const uint32_t equalizer_band_freq_range[NUM_EQ_BANDS][2] = {
55 {30000, 120000},
56 {120001, 460000},
57 {460001, 1800000},
58 {1800001, 7000000},
59 {7000001, 20000000}};
60
61 static const int16_t equalizer_band_presets_level[] = {
62 3, 0, 0, 0, 3, /* Normal Preset */
63 5, 3, -2, 4, 4, /* Classical Preset */
64 6, 0, 2, 4, 1, /* Dance Preset */
65 0, 0, 0, 0, 0, /* Flat Preset */
66 3, 0, 0, 2, -1, /* Folk Preset */
67 4, 1, 9, 3, 0, /* Heavy Metal Preset */
68 5, 3, 0, 1, 3, /* Hip Hop Preset */
69 4, 2, -2, 2, 5, /* Jazz Preset */
70 -1, 2, 5, 1, -2, /* Pop Preset */
71 5, 3, -1, 3, 5}; /* Rock Preset */
72
73 const uint16_t equalizer_band_presets_freq[NUM_EQ_BANDS] = {
74 60, /* Frequencies in Hz */
75 230,
76 910,
77 3600,
78 14000
79 };
80
81 /*
82 * Equalizer operations
83 */
84
equalizer_get_band_level(equalizer_context_t * context,int32_t band)85 int equalizer_get_band_level(equalizer_context_t *context, int32_t band)
86 {
87 ALOGV("%s: band: %d level: %d", __func__, band,
88 context->band_levels[band] * 100);
89 return context->band_levels[band] * 100;
90 }
91
equalizer_set_band_level(equalizer_context_t * context,int32_t band,int32_t level)92 int equalizer_set_band_level(equalizer_context_t *context, int32_t band,
93 int32_t level)
94 {
95 ALOGV("%s: band: %d, level: %d", __func__, band, level);
96 if (level > 0) {
97 level = (int)((level+50)/100);
98 } else {
99 level = (int)((level-50)/100);
100 }
101 context->band_levels[band] = level;
102 context->preset = PRESET_CUSTOM;
103
104 offload_eq_set_preset(&(context->offload_eq), PRESET_CUSTOM);
105 offload_eq_set_bands_level(&(context->offload_eq),
106 NUM_EQ_BANDS,
107 equalizer_band_presets_freq,
108 context->band_levels);
109 if (context->ctl)
110 offload_eq_send_params(context->ctl, &context->offload_eq,
111 OFFLOAD_SEND_EQ_ENABLE_FLAG |
112 OFFLOAD_SEND_EQ_BANDS_LEVEL);
113 return 0;
114 }
115
equalizer_get_center_frequency(equalizer_context_t * context __unused,int32_t band)116 int equalizer_get_center_frequency(equalizer_context_t *context __unused, int32_t band)
117 {
118 ALOGV("%s: band: %d", __func__, band);
119 return (equalizer_band_freq_range[band][0] +
120 equalizer_band_freq_range[band][1]) / 2;
121 }
122
equalizer_get_band_freq_range(equalizer_context_t * context __unused,int32_t band,uint32_t * low,uint32_t * high)123 int equalizer_get_band_freq_range(equalizer_context_t *context __unused, int32_t band,
124 uint32_t *low, uint32_t *high)
125 {
126 ALOGV("%s: band: %d", __func__, band);
127 *low = equalizer_band_freq_range[band][0];
128 *high = equalizer_band_freq_range[band][1];
129 return 0;
130 }
131
equalizer_get_band(equalizer_context_t * context __unused,uint32_t freq)132 int equalizer_get_band(equalizer_context_t *context __unused, uint32_t freq)
133 {
134 int i;
135
136 ALOGV("%s: freq: %d", __func__, freq);
137 for (i = 0; i < NUM_EQ_BANDS; i++) {
138 if (freq <= equalizer_band_freq_range[i][1]) {
139 return i;
140 }
141 }
142 return NUM_EQ_BANDS - 1;
143 }
144
equalizer_get_preset(equalizer_context_t * context)145 int equalizer_get_preset(equalizer_context_t *context)
146 {
147 ALOGV("%s: preset: %d", __func__, context->preset);
148 return context->preset;
149 }
150
equalizer_set_preset(equalizer_context_t * context,int preset)151 int equalizer_set_preset(equalizer_context_t *context, int preset)
152 {
153 int i;
154
155 ALOGV("%s: preset: %d", __func__, preset);
156 context->preset = preset;
157 for (i=0; i<NUM_EQ_BANDS; i++)
158 context->band_levels[i] =
159 equalizer_band_presets_level[i + preset * NUM_EQ_BANDS];
160
161 offload_eq_set_preset(&(context->offload_eq), preset);
162 offload_eq_set_bands_level(&(context->offload_eq),
163 NUM_EQ_BANDS,
164 equalizer_band_presets_freq,
165 context->band_levels);
166 if(context->ctl)
167 offload_eq_send_params(context->ctl, &context->offload_eq,
168 OFFLOAD_SEND_EQ_ENABLE_FLAG |
169 OFFLOAD_SEND_EQ_PRESET);
170 return 0;
171 }
172
equalizer_get_preset_name(equalizer_context_t * context __unused,int32_t preset)173 const char * equalizer_get_preset_name(equalizer_context_t *context __unused,
174 int32_t preset)
175 {
176 ALOGV("%s: preset: %s", __func__, equalizer_preset_names[preset]);
177 if (preset == PRESET_CUSTOM) {
178 return "Custom";
179 } else {
180 return equalizer_preset_names[preset];
181 }
182 }
183
equalizer_get_num_presets(equalizer_context_t * context __unused)184 int equalizer_get_num_presets(equalizer_context_t *context __unused)
185 {
186 ALOGV("%s: presets_num: %d", __func__,
187 sizeof(equalizer_preset_names)/sizeof(char *));
188 return sizeof(equalizer_preset_names)/sizeof(char *);
189 }
190
equalizer_get_parameter(effect_context_t * context,effect_param_t * p,uint32_t * size)191 int equalizer_get_parameter(effect_context_t *context, effect_param_t *p,
192 uint32_t *size)
193 {
194 equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
195 int voffset = ((p->psize - 1) / sizeof(int32_t) + 1) * sizeof(int32_t);
196 int32_t *param_tmp = (int32_t *)p->data;
197 int32_t param = *param_tmp++;
198 int32_t param2;
199 char *name;
200 void *value = p->data + voffset;
201 int i;
202
203 ALOGV("%s", __func__);
204
205 p->status = 0;
206
207 switch (param) {
208 case EQ_PARAM_NUM_BANDS:
209 case EQ_PARAM_CUR_PRESET:
210 case EQ_PARAM_GET_NUM_OF_PRESETS:
211 case EQ_PARAM_BAND_LEVEL:
212 case EQ_PARAM_GET_BAND:
213 if (p->vsize < sizeof(int16_t))
214 p->status = -EINVAL;
215 p->vsize = sizeof(int16_t);
216 break;
217
218 case EQ_PARAM_LEVEL_RANGE:
219 if (p->vsize < 2 * sizeof(int16_t))
220 p->status = -EINVAL;
221 p->vsize = 2 * sizeof(int16_t);
222 break;
223 case EQ_PARAM_BAND_FREQ_RANGE:
224 if (p->vsize < 2 * sizeof(int32_t))
225 p->status = -EINVAL;
226 p->vsize = 2 * sizeof(int32_t);
227 break;
228
229 case EQ_PARAM_CENTER_FREQ:
230 if (p->vsize < sizeof(int32_t))
231 p->status = -EINVAL;
232 p->vsize = sizeof(int32_t);
233 break;
234
235 case EQ_PARAM_GET_PRESET_NAME:
236 break;
237
238 case EQ_PARAM_PROPERTIES:
239 if (p->vsize < (2 + NUM_EQ_BANDS) * sizeof(uint16_t))
240 p->status = -EINVAL;
241 p->vsize = (2 + NUM_EQ_BANDS) * sizeof(uint16_t);
242 break;
243
244 default:
245 p->status = -EINVAL;
246 }
247
248 *size = sizeof(effect_param_t) + voffset + p->vsize;
249
250 if (p->status != 0)
251 return 0;
252
253 switch (param) {
254 case EQ_PARAM_NUM_BANDS:
255 ALOGV("%s: EQ_PARAM_NUM_BANDS", __func__);
256 *(uint16_t *)value = (uint16_t)NUM_EQ_BANDS;
257 break;
258
259 case EQ_PARAM_LEVEL_RANGE:
260 ALOGV("%s: EQ_PARAM_LEVEL_RANGE", __func__);
261 *(int16_t *)value = -1500;
262 *((int16_t *)value + 1) = 1500;
263 break;
264
265 case EQ_PARAM_BAND_LEVEL:
266 ALOGV("%s: EQ_PARAM_BAND_LEVEL", __func__);
267 param2 = *param_tmp;
268 if (param2 >= NUM_EQ_BANDS) {
269 p->status = -EINVAL;
270 break;
271 }
272 *(int16_t *)value = (int16_t)equalizer_get_band_level(eq_ctxt, param2);
273 break;
274
275 case EQ_PARAM_CENTER_FREQ:
276 ALOGV("%s: EQ_PARAM_CENTER_FREQ", __func__);
277 param2 = *param_tmp;
278 if (param2 >= NUM_EQ_BANDS) {
279 p->status = -EINVAL;
280 break;
281 }
282 *(int32_t *)value = equalizer_get_center_frequency(eq_ctxt, param2);
283 break;
284
285 case EQ_PARAM_BAND_FREQ_RANGE:
286 ALOGV("%s: EQ_PARAM_BAND_FREQ_RANGE", __func__);
287 param2 = *param_tmp;
288 if (param2 >= NUM_EQ_BANDS) {
289 p->status = -EINVAL;
290 break;
291 }
292 equalizer_get_band_freq_range(eq_ctxt, param2, (uint32_t *)value,
293 ((uint32_t *)value + 1));
294 break;
295
296 case EQ_PARAM_GET_BAND:
297 ALOGV("%s: EQ_PARAM_GET_BAND", __func__);
298 param2 = *param_tmp;
299 *(uint16_t *)value = (uint16_t)equalizer_get_band(eq_ctxt, param2);
300 break;
301
302 case EQ_PARAM_CUR_PRESET:
303 ALOGV("%s: EQ_PARAM_CUR_PRESET", __func__);
304 *(uint16_t *)value = (uint16_t)equalizer_get_preset(eq_ctxt);
305 break;
306
307 case EQ_PARAM_GET_NUM_OF_PRESETS:
308 ALOGV("%s: EQ_PARAM_GET_NUM_OF_PRESETS", __func__);
309 *(uint16_t *)value = (uint16_t)equalizer_get_num_presets(eq_ctxt);
310 break;
311
312 case EQ_PARAM_GET_PRESET_NAME:
313 ALOGV("%s: EQ_PARAM_GET_PRESET_NAME", __func__);
314 param2 = *param_tmp;
315 ALOGV("param2: %d", param2);
316 if (param2 >= equalizer_get_num_presets(eq_ctxt)) {
317 p->status = -EINVAL;
318 break;
319 }
320 name = (char *)value;
321 strlcpy(name, equalizer_get_preset_name(eq_ctxt, param2), p->vsize - 1);
322 name[p->vsize - 1] = 0;
323 p->vsize = strlen(name) + 1;
324 break;
325
326 case EQ_PARAM_PROPERTIES: {
327 ALOGV("%s: EQ_PARAM_PROPERTIES", __func__);
328 int16_t *prop = (int16_t *)value;
329 prop[0] = (int16_t)equalizer_get_preset(eq_ctxt);
330 prop[1] = (int16_t)NUM_EQ_BANDS;
331 for (i = 0; i < NUM_EQ_BANDS; i++) {
332 prop[2 + i] = (int16_t)equalizer_get_band_level(eq_ctxt, i);
333 }
334 } break;
335
336 default:
337 p->status = -EINVAL;
338 break;
339 }
340
341 return 0;
342 }
343
equalizer_set_parameter(effect_context_t * context,effect_param_t * p,uint32_t size __unused)344 int equalizer_set_parameter(effect_context_t *context, effect_param_t *p,
345 uint32_t size __unused)
346 {
347 equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
348 int voffset = ((p->psize - 1) / sizeof(int32_t) + 1) * sizeof(int32_t);
349 void *value = p->data + voffset;
350 int32_t *param_tmp = (int32_t *)p->data;
351 int32_t param = *param_tmp++;
352 int32_t preset;
353 int32_t band;
354 int32_t level;
355 int i;
356
357 ALOGV("%s", __func__);
358
359 p->status = 0;
360
361 switch (param) {
362 case EQ_PARAM_CUR_PRESET:
363 ALOGV("EQ_PARAM_CUR_PRESET");
364 preset = (int32_t)(*(uint16_t *)value);
365
366 if ((preset >= equalizer_get_num_presets(eq_ctxt)) || (preset < 0)) {
367 p->status = -EINVAL;
368 break;
369 }
370 equalizer_set_preset(eq_ctxt, preset);
371 break;
372 case EQ_PARAM_BAND_LEVEL:
373 ALOGV("EQ_PARAM_BAND_LEVEL");
374 band = *param_tmp;
375 level = (int32_t)(*(int16_t *)value);
376 if (band >= NUM_EQ_BANDS) {
377 p->status = -EINVAL;
378 break;
379 }
380 equalizer_set_band_level(eq_ctxt, band, level);
381 break;
382 case EQ_PARAM_PROPERTIES: {
383 ALOGV("EQ_PARAM_PROPERTIES");
384 int16_t *prop = (int16_t *)value;
385 if ((int)prop[0] >= equalizer_get_num_presets(eq_ctxt)) {
386 p->status = -EINVAL;
387 break;
388 }
389 if (prop[0] >= 0) {
390 equalizer_set_preset(eq_ctxt, (int)prop[0]);
391 } else {
392 if ((int)prop[1] != NUM_EQ_BANDS) {
393 p->status = -EINVAL;
394 break;
395 }
396 for (i = 0; i < NUM_EQ_BANDS; i++) {
397 equalizer_set_band_level(eq_ctxt, i, (int)prop[2 + i]);
398 }
399 }
400 } break;
401 default:
402 p->status = -EINVAL;
403 break;
404 }
405
406 return 0;
407 }
408
equalizer_set_device(effect_context_t * context,uint32_t device)409 int equalizer_set_device(effect_context_t *context, uint32_t device)
410 {
411 ALOGV("%s: device: %d", __func__, device);
412 equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
413 eq_ctxt->device = device;
414 offload_eq_set_device(&(eq_ctxt->offload_eq), device);
415 return 0;
416 }
417
equalizer_reset(effect_context_t * context)418 int equalizer_reset(effect_context_t *context)
419 {
420 equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
421
422 return 0;
423 }
424
equalizer_init(effect_context_t * context)425 int equalizer_init(effect_context_t *context)
426 {
427 ALOGV("%s", __func__);
428 equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
429
430 context->config.inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ;
431 context->config.inputCfg.channels = AUDIO_CHANNEL_OUT_STEREO;
432 context->config.inputCfg.format = AUDIO_FORMAT_PCM_16_BIT;
433 context->config.inputCfg.samplingRate = 44100;
434 context->config.inputCfg.bufferProvider.getBuffer = NULL;
435 context->config.inputCfg.bufferProvider.releaseBuffer = NULL;
436 context->config.inputCfg.bufferProvider.cookie = NULL;
437 context->config.inputCfg.mask = EFFECT_CONFIG_ALL;
438 context->config.outputCfg.accessMode = EFFECT_BUFFER_ACCESS_ACCUMULATE;
439 context->config.outputCfg.channels = AUDIO_CHANNEL_OUT_STEREO;
440 context->config.outputCfg.format = AUDIO_FORMAT_PCM_16_BIT;
441 context->config.outputCfg.samplingRate = 44100;
442 context->config.outputCfg.bufferProvider.getBuffer = NULL;
443 context->config.outputCfg.bufferProvider.releaseBuffer = NULL;
444 context->config.outputCfg.bufferProvider.cookie = NULL;
445 context->config.outputCfg.mask = EFFECT_CONFIG_ALL;
446
447 set_config(context, &context->config);
448
449 memset(&(eq_ctxt->offload_eq), 0, sizeof(struct eq_params));
450 offload_eq_set_preset(&(eq_ctxt->offload_eq), INVALID_PRESET);
451
452 return 0;
453 }
454
equalizer_enable(effect_context_t * context)455 int equalizer_enable(effect_context_t *context)
456 {
457 equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
458
459 ALOGV("%s", __func__);
460
461 if (!offload_eq_get_enable_flag(&(eq_ctxt->offload_eq))) {
462 offload_eq_set_enable_flag(&(eq_ctxt->offload_eq), true);
463 if (eq_ctxt->ctl)
464 offload_eq_send_params(eq_ctxt->ctl, &eq_ctxt->offload_eq,
465 OFFLOAD_SEND_EQ_ENABLE_FLAG |
466 OFFLOAD_SEND_EQ_BANDS_LEVEL);
467 }
468 return 0;
469 }
470
equalizer_disable(effect_context_t * context)471 int equalizer_disable(effect_context_t *context)
472 {
473 equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
474
475 ALOGV("%s", __func__);
476 if (offload_eq_get_enable_flag(&(eq_ctxt->offload_eq))) {
477 offload_eq_set_enable_flag(&(eq_ctxt->offload_eq), false);
478 if (eq_ctxt->ctl)
479 offload_eq_send_params(eq_ctxt->ctl, &eq_ctxt->offload_eq,
480 OFFLOAD_SEND_EQ_ENABLE_FLAG);
481 }
482 return 0;
483 }
484
equalizer_start(effect_context_t * context,output_context_t * output)485 int equalizer_start(effect_context_t *context, output_context_t *output)
486 {
487 equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
488
489 ALOGV("%s: %p", __func__, output->ctl);
490 eq_ctxt->ctl = output->ctl;
491 if (offload_eq_get_enable_flag(&(eq_ctxt->offload_eq)))
492 if (eq_ctxt->ctl)
493 offload_eq_send_params(eq_ctxt->ctl, &eq_ctxt->offload_eq,
494 OFFLOAD_SEND_EQ_ENABLE_FLAG |
495 OFFLOAD_SEND_EQ_BANDS_LEVEL);
496 return 0;
497 }
498
equalizer_stop(effect_context_t * context,output_context_t * output __unused)499 int equalizer_stop(effect_context_t *context, output_context_t *output __unused)
500 {
501 equalizer_context_t *eq_ctxt = (equalizer_context_t *)context;
502
503 ALOGV("%s", __func__);
504 eq_ctxt->ctl = NULL;
505 return 0;
506 }
507