1 /*
2 * Copyright (C) 2013 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 "voice_processing"
18 /*#define LOG_NDEBUG 0*/
19 #include <dlfcn.h>
20 #include <cutils/log.h>
21 #include <cutils/list.h>
22 #include <hardware/audio_effect.h>
23 #include <audio_effects/effect_aec.h>
24 #include <audio_effects/effect_agc.h>
25 #include <audio_effects/effect_ns.h>
26
27
28 //------------------------------------------------------------------------------
29 // local definitions
30 //------------------------------------------------------------------------------
31
32 #define EFFECTS_DESCRIPTOR_LIBRARY_PATH "/system/lib/soundfx/libqcomvoiceprocessingdescriptors.so"
33
34 // types of pre processing modules
35 enum effect_id
36 {
37 AEC_ID, // Acoustic Echo Canceler
38 NS_ID, // Noise Suppressor
39 //ENABLE_AGC AGC_ID, // Automatic Gain Control
40 NUM_ID
41 };
42
43 // Session state
44 enum session_state {
45 SESSION_STATE_INIT, // initialized
46 SESSION_STATE_CONFIG // configuration received
47 };
48
49 // Effect/Preprocessor state
50 enum effect_state {
51 EFFECT_STATE_INIT, // initialized
52 EFFECT_STATE_CREATED, // webRTC engine created
53 EFFECT_STATE_CONFIG, // configuration received/disabled
54 EFFECT_STATE_ACTIVE // active/enabled
55 };
56
57 // Effect context
58 struct effect_s {
59 const struct effect_interface_s *itfe;
60 uint32_t id; // type of pre processor (enum effect_id)
61 uint32_t state; // current state (enum effect_state)
62 struct session_s *session; // session the effect is on
63 };
64
65 // Session context
66 struct session_s {
67 struct listnode node;
68 effect_config_t config;
69 struct effect_s effects[NUM_ID]; // effects in this session
70 uint32_t state; // current state (enum session_state)
71 int id; // audio session ID
72 int io; // handle of input stream this session is on
73 uint32_t created_msk; // bit field containing IDs of crested pre processors
74 uint32_t enabled_msk; // bit field containing IDs of enabled pre processors
75 uint32_t processed_msk; // bit field containing IDs of pre processors already
76 };
77
78
79 //------------------------------------------------------------------------------
80 // Default Effect descriptors. Device specific descriptors should be defined in
81 // libqcomvoiceprocessing.<product_name>.so if needed.
82 //------------------------------------------------------------------------------
83
84 // UUIDs for effect types have been generated from http://www.itu.int/ITU-T/asn1/uuid.html
85 // as the pre processing effects are not defined by OpenSL ES
86
87 // Acoustic Echo Cancellation
88 static const effect_descriptor_t qcom_default_aec_descriptor = {
89 { 0x7b491460, 0x8d4d, 0x11e0, 0xbd61, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }, // type
90 { 0x0f8d0d2a, 0x59e5, 0x45fe, 0xb6e4, { 0x24, 0x8c, 0x8a, 0x79, 0x91, 0x09 } }, // uuid
91 EFFECT_CONTROL_API_VERSION,
92 (EFFECT_FLAG_TYPE_PRE_PROC|EFFECT_FLAG_DEVICE_IND),
93 0,
94 0,
95 "Acoustic Echo Canceler",
96 "Qualcomm Fluence"
97 };
98
99 // Noise suppression
100 static const effect_descriptor_t qcom_default_ns_descriptor = {
101 { 0x58b4b260, 0x8e06, 0x11e0, 0xaa8e, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }, // type
102 { 0x1d97bb0b, 0x9e2f, 0x4403, 0x9ae3, { 0x58, 0xc2, 0x55, 0x43, 0x06, 0xf8 } }, // uuid
103 EFFECT_CONTROL_API_VERSION,
104 (EFFECT_FLAG_TYPE_PRE_PROC|EFFECT_FLAG_DEVICE_IND),
105 0,
106 0,
107 "Noise Suppression",
108 "Qualcomm Fluence"
109 };
110
111 //ENABLE_AGC
112 // Automatic Gain Control
113 //static const effect_descriptor_t qcom_default_agc_descriptor = {
114 // { 0x0a8abfe0, 0x654c, 0x11e0, 0xba26, { 0x00, 0x02, 0xa5, 0xd5, 0xc5, 0x1b } }, // type
115 // { 0x0dd49521, 0x8c59, 0x40b1, 0xb403, { 0xe0, 0x8d, 0x5f, 0x01, 0x87, 0x5e } }, // uuid
116 // EFFECT_CONTROL_API_VERSION,
117 // (EFFECT_FLAG_TYPE_PRE_PROC|EFFECT_FLAG_DEVICE_IND),
118 // 0,
119 // 0,
120 // "Automatic Gain Control",
121 // "Qualcomm Fluence"
122 //};
123
124 const effect_descriptor_t *descriptors[NUM_ID] = {
125 &qcom_default_aec_descriptor,
126 &qcom_default_ns_descriptor,
127 //ENABLE_AGC &qcom_default_agc_descriptor,
128 };
129
130
131 static int init_status = 1;
132 struct listnode session_list;
133 static const struct effect_interface_s effect_interface;
134 static const effect_uuid_t * uuid_to_id_table[NUM_ID];
135
136 //------------------------------------------------------------------------------
137 // Helper functions
138 //------------------------------------------------------------------------------
139
id_to_uuid(int id)140 static const effect_uuid_t * id_to_uuid(int id)
141 {
142 if (id >= NUM_ID)
143 return EFFECT_UUID_NULL;
144
145 return uuid_to_id_table[id];
146 }
147
uuid_to_id(const effect_uuid_t * uuid)148 static uint32_t uuid_to_id(const effect_uuid_t * uuid)
149 {
150 size_t i;
151 for (i = 0; i < NUM_ID; i++)
152 if (memcmp(uuid, uuid_to_id_table[i], sizeof(*uuid)) == 0)
153 break;
154
155 return i;
156 }
157
158 //------------------------------------------------------------------------------
159 // Effect functions
160 //------------------------------------------------------------------------------
161
162 static void session_set_fx_enabled(struct session_s *session, uint32_t id, bool enabled);
163
164 #define BAD_STATE_ABORT(from, to) \
165 LOG_ALWAYS_FATAL("Bad state transition from %d to %d", from, to);
166
effect_set_state(struct effect_s * effect,uint32_t state)167 static int effect_set_state(struct effect_s *effect, uint32_t state)
168 {
169 int status = 0;
170 ALOGV("effect_set_state() id %d, new %d old %d", effect->id, state, effect->state);
171 switch(state) {
172 case EFFECT_STATE_INIT:
173 switch(effect->state) {
174 case EFFECT_STATE_ACTIVE:
175 session_set_fx_enabled(effect->session, effect->id, false);
176 case EFFECT_STATE_CONFIG:
177 case EFFECT_STATE_CREATED:
178 case EFFECT_STATE_INIT:
179 break;
180 default:
181 BAD_STATE_ABORT(effect->state, state);
182 }
183 break;
184 case EFFECT_STATE_CREATED:
185 switch(effect->state) {
186 case EFFECT_STATE_INIT:
187 break;
188 case EFFECT_STATE_CREATED:
189 case EFFECT_STATE_ACTIVE:
190 case EFFECT_STATE_CONFIG:
191 ALOGE("effect_set_state() invalid transition");
192 status = -ENOSYS;
193 break;
194 default:
195 BAD_STATE_ABORT(effect->state, state);
196 }
197 break;
198 case EFFECT_STATE_CONFIG:
199 switch(effect->state) {
200 case EFFECT_STATE_INIT:
201 ALOGE("effect_set_state() invalid transition");
202 status = -ENOSYS;
203 break;
204 case EFFECT_STATE_ACTIVE:
205 session_set_fx_enabled(effect->session, effect->id, false);
206 break;
207 case EFFECT_STATE_CREATED:
208 case EFFECT_STATE_CONFIG:
209 break;
210 default:
211 BAD_STATE_ABORT(effect->state, state);
212 }
213 break;
214 case EFFECT_STATE_ACTIVE:
215 switch(effect->state) {
216 case EFFECT_STATE_INIT:
217 case EFFECT_STATE_CREATED:
218 ALOGE("effect_set_state() invalid transition");
219 status = -ENOSYS;
220 break;
221 case EFFECT_STATE_ACTIVE:
222 // enabling an already enabled effect is just ignored
223 break;
224 case EFFECT_STATE_CONFIG:
225 session_set_fx_enabled(effect->session, effect->id, true);
226 break;
227 default:
228 BAD_STATE_ABORT(effect->state, state);
229 }
230 break;
231 default:
232 BAD_STATE_ABORT(effect->state, state);
233 }
234
235 if (status == 0)
236 effect->state = state;
237
238 return status;
239 }
240
effect_init(struct effect_s * effect,uint32_t id)241 static int effect_init(struct effect_s *effect, uint32_t id)
242 {
243 effect->itfe = &effect_interface;
244 effect->id = id;
245 effect->state = EFFECT_STATE_INIT;
246 return 0;
247 }
248
effect_create(struct effect_s * effect,struct session_s * session,effect_handle_t * interface)249 static int effect_create(struct effect_s *effect,
250 struct session_s *session,
251 effect_handle_t *interface)
252 {
253 effect->session = session;
254 *interface = (effect_handle_t)&effect->itfe;
255 return effect_set_state(effect, EFFECT_STATE_CREATED);
256 }
257
effect_release(struct effect_s * effect)258 static int effect_release(struct effect_s *effect)
259 {
260 return effect_set_state(effect, EFFECT_STATE_INIT);
261 }
262
263
264 //------------------------------------------------------------------------------
265 // Session functions
266 //------------------------------------------------------------------------------
267
session_init(struct session_s * session)268 static int session_init(struct session_s *session)
269 {
270 size_t i;
271 int status = 0;
272
273 session->state = SESSION_STATE_INIT;
274 session->id = 0;
275 session->io = 0;
276 session->created_msk = 0;
277 for (i = 0; i < NUM_ID && status == 0; i++)
278 status = effect_init(&session->effects[i], i);
279
280 return status;
281 }
282
283
session_create_effect(struct session_s * session,int32_t id,effect_handle_t * interface)284 static int session_create_effect(struct session_s *session,
285 int32_t id,
286 effect_handle_t *interface)
287 {
288 int status = -ENOMEM;
289
290 ALOGV("session_create_effect() %s, created_msk %08x",
291 id == AEC_ID ? "AEC" : id == NS_ID ? "NS" : "?", session->created_msk);
292
293 if (session->created_msk == 0) {
294 session->config.inputCfg.samplingRate = 16000;
295 session->config.inputCfg.channels = AUDIO_CHANNEL_IN_MONO;
296 session->config.inputCfg.format = AUDIO_FORMAT_PCM_16_BIT;
297 session->config.outputCfg.samplingRate = 16000;
298 session->config.outputCfg.channels = AUDIO_CHANNEL_IN_MONO;
299 session->config.outputCfg.format = AUDIO_FORMAT_PCM_16_BIT;
300 session->enabled_msk = 0;
301 session->processed_msk = 0;
302 }
303 status = effect_create(&session->effects[id], session, interface);
304 if (status < 0)
305 goto error;
306
307 ALOGV("session_create_effect() OK");
308 session->created_msk |= (1<<id);
309 return status;
310
311 error:
312 return status;
313 }
314
session_release_effect(struct session_s * session,struct effect_s * fx)315 static int session_release_effect(struct session_s *session,
316 struct effect_s *fx)
317 {
318 ALOGW_IF(effect_release(fx) != 0, " session_release_effect() failed for id %d", fx->id);
319
320 session->created_msk &= ~(1<<fx->id);
321 if (session->created_msk == 0)
322 {
323 ALOGV("session_release_effect() last effect: removing session");
324 list_remove(&session->node);
325 free(session);
326 }
327
328 return 0;
329 }
330
331
session_set_config(struct session_s * session,effect_config_t * config)332 static int session_set_config(struct session_s *session, effect_config_t *config)
333 {
334 int status;
335
336 if (config->inputCfg.samplingRate != config->outputCfg.samplingRate ||
337 config->inputCfg.format != config->outputCfg.format ||
338 config->inputCfg.format != AUDIO_FORMAT_PCM_16_BIT)
339 return -EINVAL;
340
341 ALOGV("session_set_config() sampling rate %d channels %08x",
342 config->inputCfg.samplingRate, config->inputCfg.channels);
343
344 // if at least one process is enabled, do not accept configuration changes
345 if (session->enabled_msk) {
346 if (session->config.inputCfg.samplingRate != config->inputCfg.samplingRate ||
347 session->config.inputCfg.channels != config->inputCfg.channels ||
348 session->config.outputCfg.channels != config->outputCfg.channels)
349 return -ENOSYS;
350 else
351 return 0;
352 }
353
354 memcpy(&session->config, config, sizeof(effect_config_t));
355
356 session->state = SESSION_STATE_CONFIG;
357 return 0;
358 }
359
session_get_config(struct session_s * session,effect_config_t * config)360 static void session_get_config(struct session_s *session, effect_config_t *config)
361 {
362 memcpy(config, &session->config, sizeof(effect_config_t));
363
364 config->inputCfg.mask = config->outputCfg.mask =
365 (EFFECT_CONFIG_SMP_RATE | EFFECT_CONFIG_CHANNELS | EFFECT_CONFIG_FORMAT);
366 }
367
368
session_set_fx_enabled(struct session_s * session,uint32_t id,bool enabled)369 static void session_set_fx_enabled(struct session_s *session, uint32_t id, bool enabled)
370 {
371 if (enabled) {
372 if(session->enabled_msk == 0) {
373 /* do first enable here */
374 }
375 session->enabled_msk |= (1 << id);
376 } else {
377 session->enabled_msk &= ~(1 << id);
378 if(session->enabled_msk == 0) {
379 /* do last enable here */
380 }
381 }
382 ALOGV("session_set_fx_enabled() id %d, enabled %d enabled_msk %08x",
383 id, enabled, session->enabled_msk);
384 session->processed_msk = 0;
385 }
386
387 //------------------------------------------------------------------------------
388 // Global functions
389 //------------------------------------------------------------------------------
390
get_session(int32_t id,int32_t sessionId,int32_t ioId)391 static struct session_s *get_session(int32_t id, int32_t sessionId, int32_t ioId)
392 {
393 size_t i;
394 int free = -1;
395 struct listnode *node;
396 struct session_s *session;
397
398 list_for_each(node, &session_list) {
399 session = node_to_item(node, struct session_s, node);
400 if (session->io == ioId) {
401 if (session->created_msk & (1 << id)) {
402 ALOGV("get_session() effect %d already created", id);
403 return NULL;
404 }
405 ALOGV("get_session() found session %p", session);
406 return session;
407 }
408 }
409
410 session = (struct session_s *)calloc(1, sizeof(struct session_s));
411 session_init(session);
412 session->id = sessionId;
413 session->io = ioId;
414 list_add_tail(&session_list, &session->node);
415
416 ALOGV("get_session() created session %p", session);
417
418 return session;
419 }
420
init()421 static int init() {
422 void *lib_handle;
423 const effect_descriptor_t *desc;
424
425 if (init_status <= 0)
426 return init_status;
427
428 if (access(EFFECTS_DESCRIPTOR_LIBRARY_PATH, R_OK) == 0) {
429 lib_handle = dlopen(EFFECTS_DESCRIPTOR_LIBRARY_PATH, RTLD_NOW);
430 if (lib_handle == NULL) {
431 ALOGE("%s: DLOPEN failed for %s", __func__, EFFECTS_DESCRIPTOR_LIBRARY_PATH);
432 } else {
433 ALOGV("%s: DLOPEN successful for %s", __func__, EFFECTS_DESCRIPTOR_LIBRARY_PATH);
434 desc = (const effect_descriptor_t *)dlsym(lib_handle,
435 "qcom_product_aec_descriptor");
436 if (desc)
437 descriptors[AEC_ID] = desc;
438
439 desc = (const effect_descriptor_t *)dlsym(lib_handle,
440 "qcom_product_ns_descriptor");
441 if (desc)
442 descriptors[NS_ID] = desc;
443
444 //ENABLE_AGC
445 // desc = (const effect_descriptor_t *)dlsym(lib_handle,
446 // "qcom_product_agc_descriptor");
447 // if (desc)
448 // descriptors[AGC_ID] = desc;
449 }
450 }
451
452 uuid_to_id_table[AEC_ID] = FX_IID_AEC;
453 uuid_to_id_table[NS_ID] = FX_IID_NS;
454 //ENABLE_AGC uuid_to_id_table[AGC_ID] = FX_IID_AGC;
455
456 list_init(&session_list);
457
458 init_status = 0;
459 return init_status;
460 }
461
get_descriptor(const effect_uuid_t * uuid)462 static const effect_descriptor_t *get_descriptor(const effect_uuid_t *uuid)
463 {
464 size_t i;
465 for (i = 0; i < NUM_ID; i++)
466 if (memcmp(&descriptors[i]->uuid, uuid, sizeof(effect_uuid_t)) == 0)
467 return descriptors[i];
468
469 return NULL;
470 }
471
472
473 //------------------------------------------------------------------------------
474 // Effect Control Interface Implementation
475 //------------------------------------------------------------------------------
476
fx_process(effect_handle_t self,audio_buffer_t * inBuffer,audio_buffer_t * outBuffer)477 static int fx_process(effect_handle_t self,
478 audio_buffer_t *inBuffer,
479 audio_buffer_t *outBuffer)
480 {
481 struct effect_s *effect = (struct effect_s *)self;
482 struct session_s *session;
483
484 if (effect == NULL) {
485 ALOGV("fx_process() ERROR effect == NULL");
486 return -EINVAL;
487 }
488
489 if (inBuffer == NULL || inBuffer->raw == NULL ||
490 outBuffer == NULL || outBuffer->raw == NULL) {
491 ALOGW("fx_process() ERROR bad pointer");
492 return -EINVAL;
493 }
494
495 session = (struct session_s *)effect->session;
496
497 session->processed_msk |= (1<<effect->id);
498
499 if ((session->processed_msk & session->enabled_msk) == session->enabled_msk) {
500 effect->session->processed_msk = 0;
501 return 0;
502 } else
503 return -ENODATA;
504 }
505
fx_command(effect_handle_t self,uint32_t cmdCode,uint32_t cmdSize,void * pCmdData,uint32_t * replySize,void * pReplyData)506 static int fx_command(effect_handle_t self,
507 uint32_t cmdCode,
508 uint32_t cmdSize,
509 void *pCmdData,
510 uint32_t *replySize,
511 void *pReplyData)
512 {
513 struct effect_s *effect = (struct effect_s *)self;
514
515 if (effect == NULL)
516 return -EINVAL;
517
518 //ALOGV("fx_command: command %d cmdSize %d",cmdCode, cmdSize);
519
520 switch (cmdCode) {
521 case EFFECT_CMD_INIT:
522 if (pReplyData == NULL || *replySize != sizeof(int))
523 return -EINVAL;
524
525 *(int *)pReplyData = 0;
526 break;
527
528 case EFFECT_CMD_SET_CONFIG: {
529 if (pCmdData == NULL||
530 cmdSize != sizeof(effect_config_t)||
531 pReplyData == NULL||
532 *replySize != sizeof(int)) {
533 ALOGV("fx_command() EFFECT_CMD_SET_CONFIG invalid args");
534 return -EINVAL;
535 }
536 *(int *)pReplyData = session_set_config(effect->session, (effect_config_t *)pCmdData);
537 if (*(int *)pReplyData != 0)
538 break;
539
540 if (effect->state != EFFECT_STATE_ACTIVE)
541 *(int *)pReplyData = effect_set_state(effect, EFFECT_STATE_CONFIG);
542
543 } break;
544
545 case EFFECT_CMD_GET_CONFIG:
546 if (pReplyData == NULL ||
547 *replySize != sizeof(effect_config_t)) {
548 ALOGV("fx_command() EFFECT_CMD_GET_CONFIG invalid args");
549 return -EINVAL;
550 }
551
552 session_get_config(effect->session, (effect_config_t *)pReplyData);
553 break;
554
555 case EFFECT_CMD_RESET:
556 break;
557
558 case EFFECT_CMD_GET_PARAM: {
559 if (pCmdData == NULL ||
560 cmdSize < (int)sizeof(effect_param_t) ||
561 pReplyData == NULL ||
562 *replySize < (int)sizeof(effect_param_t)) {
563 ALOGV("fx_command() EFFECT_CMD_GET_PARAM invalid args");
564 return -EINVAL;
565 }
566 effect_param_t *p = (effect_param_t *)pCmdData;
567
568 memcpy(pReplyData, pCmdData, sizeof(effect_param_t) + p->psize);
569 p = (effect_param_t *)pReplyData;
570 p->status = -ENOSYS;
571
572 } break;
573
574 case EFFECT_CMD_SET_PARAM: {
575 if (pCmdData == NULL||
576 cmdSize < (int)sizeof(effect_param_t) ||
577 pReplyData == NULL ||
578 *replySize != sizeof(int32_t)) {
579 ALOGV("fx_command() EFFECT_CMD_SET_PARAM invalid args");
580 return -EINVAL;
581 }
582 effect_param_t *p = (effect_param_t *) pCmdData;
583
584 if (p->psize != sizeof(int32_t)) {
585 ALOGV("fx_command() EFFECT_CMD_SET_PARAM invalid param format");
586 return -EINVAL;
587 }
588 *(int *)pReplyData = -ENOSYS;
589 } break;
590
591 case EFFECT_CMD_ENABLE:
592 if (pReplyData == NULL || *replySize != sizeof(int)) {
593 ALOGV("fx_command() EFFECT_CMD_ENABLE invalid args");
594 return -EINVAL;
595 }
596 *(int *)pReplyData = effect_set_state(effect, EFFECT_STATE_ACTIVE);
597 break;
598
599 case EFFECT_CMD_DISABLE:
600 if (pReplyData == NULL || *replySize != sizeof(int)) {
601 ALOGV("fx_command() EFFECT_CMD_DISABLE invalid args");
602 return -EINVAL;
603 }
604 *(int *)pReplyData = effect_set_state(effect, EFFECT_STATE_CONFIG);
605 break;
606
607 case EFFECT_CMD_SET_DEVICE:
608 case EFFECT_CMD_SET_INPUT_DEVICE:
609 case EFFECT_CMD_SET_VOLUME:
610 case EFFECT_CMD_SET_AUDIO_MODE:
611 if (pCmdData == NULL ||
612 cmdSize != sizeof(uint32_t)) {
613 ALOGV("fx_command() %s invalid args",
614 cmdCode == EFFECT_CMD_SET_DEVICE ? "EFFECT_CMD_SET_DEVICE" :
615 cmdCode == EFFECT_CMD_SET_INPUT_DEVICE ? "EFFECT_CMD_SET_INPUT_DEVICE" :
616 cmdCode == EFFECT_CMD_SET_VOLUME ? "EFFECT_CMD_SET_VOLUME" :
617 cmdCode == EFFECT_CMD_SET_AUDIO_MODE ? "EFFECT_CMD_SET_AUDIO_MODE" :
618 "");
619 return -EINVAL;
620 }
621 ALOGV("fx_command() %s value %08x",
622 cmdCode == EFFECT_CMD_SET_DEVICE ? "EFFECT_CMD_SET_DEVICE" :
623 cmdCode == EFFECT_CMD_SET_INPUT_DEVICE ? "EFFECT_CMD_SET_INPUT_DEVICE" :
624 cmdCode == EFFECT_CMD_SET_VOLUME ? "EFFECT_CMD_SET_VOLUME" :
625 cmdCode == EFFECT_CMD_SET_AUDIO_MODE ? "EFFECT_CMD_SET_AUDIO_MODE":
626 "",
627 *(int *)pCmdData);
628 break;
629
630 default:
631 return -EINVAL;
632 }
633 return 0;
634 }
635
636
fx_get_descriptor(effect_handle_t self,effect_descriptor_t * pDescriptor)637 static int fx_get_descriptor(effect_handle_t self,
638 effect_descriptor_t *pDescriptor)
639 {
640 struct effect_s *effect = (struct effect_s *)self;
641
642 if (effect == NULL || pDescriptor == NULL)
643 return -EINVAL;
644
645 *pDescriptor = *descriptors[effect->id];
646
647 return 0;
648 }
649
650
651 // effect_handle_t interface implementation for effect
652 static const struct effect_interface_s effect_interface = {
653 fx_process,
654 fx_command,
655 fx_get_descriptor,
656 NULL
657 };
658
659 //------------------------------------------------------------------------------
660 // Effect Library Interface Implementation
661 //------------------------------------------------------------------------------
662
lib_create(const effect_uuid_t * uuid,int32_t sessionId,int32_t ioId,effect_handle_t * pInterface)663 static int lib_create(const effect_uuid_t *uuid,
664 int32_t sessionId,
665 int32_t ioId,
666 effect_handle_t *pInterface)
667 {
668 ALOGV("lib_create: uuid: %08x session %d IO: %d", uuid->timeLow, sessionId, ioId);
669
670 int status;
671 const effect_descriptor_t *desc;
672 struct session_s *session;
673 uint32_t id;
674
675 if (init() != 0)
676 return init_status;
677
678 desc = get_descriptor(uuid);
679
680 if (desc == NULL) {
681 ALOGW("lib_create: fx not found uuid: %08x", uuid->timeLow);
682 return -EINVAL;
683 }
684 id = uuid_to_id(&desc->type);
685
686 session = get_session(id, sessionId, ioId);
687
688 if (session == NULL) {
689 ALOGW("lib_create: no more session available");
690 return -EINVAL;
691 }
692
693 status = session_create_effect(session, id, pInterface);
694
695 if (status < 0 && session->created_msk == 0) {
696 list_remove(&session->node);
697 free(session);
698 }
699 return status;
700 }
701
lib_release(effect_handle_t interface)702 static int lib_release(effect_handle_t interface)
703 {
704 struct listnode *node;
705 struct session_s *session;
706
707 ALOGV("lib_release %p", interface);
708 if (init() != 0)
709 return init_status;
710
711 struct effect_s *fx = (struct effect_s *)interface;
712
713 list_for_each(node, &session_list) {
714 session = node_to_item(node, struct session_s, node);
715 if (session == fx->session) {
716 session_release_effect(fx->session, fx);
717 return 0;
718 }
719 }
720
721 return -EINVAL;
722 }
723
lib_get_descriptor(const effect_uuid_t * uuid,effect_descriptor_t * pDescriptor)724 static int lib_get_descriptor(const effect_uuid_t *uuid,
725 effect_descriptor_t *pDescriptor)
726 {
727 const effect_descriptor_t *desc;
728
729 if (pDescriptor == NULL || uuid == NULL)
730 return -EINVAL;
731
732 if (init() != 0)
733 return init_status;
734
735 desc = get_descriptor(uuid);
736 if (desc == NULL) {
737 ALOGV("lib_get_descriptor() not found");
738 return -EINVAL;
739 }
740
741 ALOGV("lib_get_descriptor() got fx %s", desc->name);
742
743 *pDescriptor = *desc;
744 return 0;
745 }
746
747 // This is the only symbol that needs to be exported
748 __attribute__ ((visibility ("default")))
749 audio_effect_library_t AUDIO_EFFECT_LIBRARY_INFO_SYM = {
750 .tag = AUDIO_EFFECT_LIBRARY_TAG,
751 .version = EFFECT_LIBRARY_API_VERSION,
752 .name = "MSM8960 Audio Preprocessing Library",
753 .implementor = "The Android Open Source Project",
754 .create_effect = lib_create,
755 .release_effect = lib_release,
756 .get_descriptor = lib_get_descriptor
757 };
758