Apoorv Raghuvanshi | 6178a3f | 2013-10-19 12:38:54 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2013, The Linux Foundation. All rights reserved. |
| 3 | * Not a Contribution. |
| 4 | * |
| 5 | * Copyright (C) 2013 The Android Open Source Project |
| 6 | * |
| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | * you may not use this file except in compliance with the License. |
| 9 | * You may obtain a copy of the License at |
| 10 | * |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | * |
| 13 | * Unless required by applicable law or agreed to in writing, software |
| 14 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | * See the License for the specific language governing permissions and |
| 17 | * limitations under the License. |
| 18 | */ |
| 19 | |
| 20 | #define LOG_TAG "audio_hw_ssr" |
| 21 | /*#define LOG_NDEBUG 0*/ |
| 22 | #define LOG_NDDEBUG 0 |
| 23 | |
| 24 | #include <errno.h> |
| 25 | #include <cutils/properties.h> |
| 26 | #include <stdlib.h> |
| 27 | #include <dlfcn.h> |
| 28 | #include <cutils/str_parms.h> |
| 29 | #include <cutils/log.h> |
| 30 | |
| 31 | #include "audio_hw.h" |
| 32 | #include "platform.h" |
| 33 | #include "platform_api.h" |
| 34 | #include "surround_filters_interface.h" |
| 35 | |
| 36 | #ifdef SSR_ENABLED |
| 37 | #define COEFF_ARRAY_SIZE 4 |
| 38 | #define FILT_SIZE ((512+1)* 6) /* # ((FFT bins)/2+1)*numOutputs */ |
| 39 | #define SSR_FRAME_SIZE 512 |
| 40 | #define SSR_INPUT_FRAME_SIZE (SSR_FRAME_SIZE * 4) |
| 41 | #define SSR_OUTPUT_FRAME_SIZE (SSR_FRAME_SIZE * 6) |
| 42 | #define SSR_CHANNEL_COUNT 4 |
| 43 | #define SSR_PERIOD_SIZE 256 |
| 44 | #define SSR_PERIOD_COUNT 8 |
| 45 | |
| 46 | #define SURROUND_FILE_1R "/system/etc/surround_sound/filter1r.pcm" |
| 47 | #define SURROUND_FILE_2R "/system/etc/surround_sound/filter2r.pcm" |
| 48 | #define SURROUND_FILE_3R "/system/etc/surround_sound/filter3r.pcm" |
| 49 | #define SURROUND_FILE_4R "/system/etc/surround_sound/filter4r.pcm" |
| 50 | |
| 51 | #define SURROUND_FILE_1I "/system/etc/surround_sound/filter1i.pcm" |
| 52 | #define SURROUND_FILE_2I "/system/etc/surround_sound/filter2i.pcm" |
| 53 | #define SURROUND_FILE_3I "/system/etc/surround_sound/filter3i.pcm" |
| 54 | #define SURROUND_FILE_4I "/system/etc/surround_sound/filter4i.pcm" |
| 55 | #define AUDIO_PARAMETER_KEY_SSR "ssr" |
| 56 | #define LIB_SURROUND_PROC "libsurround_proc.so" |
| 57 | |
| 58 | typedef int (*surround_filters_init_t)(void *, int, int, Word16 **, |
| 59 | Word16 **, int, int, int, Profiler *); |
| 60 | typedef void (*surround_filters_release_t)(void *); |
| 61 | typedef int (*surround_filters_set_channel_map_t)(void *, const int *); |
| 62 | typedef void (*surround_filters_intl_process_t)(void *, Word16 *, Word16 *); |
| 63 | |
| 64 | struct ssr_module { |
| 65 | FILE *fp_4ch; |
| 66 | FILE *fp_6ch; |
| 67 | int16_t **real_coeffs; |
| 68 | int16_t **imag_coeffs; |
| 69 | void *surround_obj; |
| 70 | |
| 71 | int16_t *surround_input_buffer; |
| 72 | int16_t *surround_output_buffer; |
| 73 | int surround_input_bufferIdx; |
| 74 | int surround_output_bufferIdx; |
| 75 | bool is_ssr_enabled; |
| 76 | |
| 77 | void *surround_filters_handle; |
| 78 | surround_filters_init_t surround_filters_init; |
| 79 | surround_filters_release_t surround_filters_release; |
| 80 | surround_filters_set_channel_map_t surround_filters_set_channel_map; |
| 81 | surround_filters_intl_process_t surround_filters_intl_process; |
| 82 | }; |
| 83 | |
| 84 | static int32_t ssr_init_surround_sound_lib(unsigned long buffersize); |
| 85 | static int32_t ssr_read_coeffs_from_file(); |
| 86 | |
| 87 | static struct ssr_module ssrmod = { |
| 88 | .fp_4ch = NULL, |
| 89 | .fp_6ch= NULL, |
| 90 | .real_coeffs = NULL, |
| 91 | .imag_coeffs = NULL, |
| 92 | .surround_obj = NULL, |
| 93 | .surround_output_buffer = NULL, |
| 94 | .surround_input_buffer = NULL, |
| 95 | .surround_output_bufferIdx = 0, |
| 96 | .surround_input_bufferIdx= 0, |
| 97 | .is_ssr_enabled = 0, |
| 98 | |
| 99 | .surround_filters_handle = NULL, |
| 100 | .surround_filters_init = NULL, |
| 101 | .surround_filters_release = NULL, |
| 102 | .surround_filters_set_channel_map = NULL, |
| 103 | .surround_filters_intl_process = NULL, |
| 104 | }; |
| 105 | |
| 106 | /* Use AAC/DTS channel mapping as default channel mapping: C,FL,FR,Ls,Rs,LFE */ |
| 107 | static const int chan_map[] = { 1, 2, 4, 3, 0, 5}; |
| 108 | |
| 109 | /* Rotine to read coeffs from File and updates real and imaginary |
| 110 | coeff array member variable */ |
| 111 | static int32_t ssr_read_coeffs_from_file() |
| 112 | { |
| 113 | FILE *flt1r; |
| 114 | FILE *flt2r; |
| 115 | FILE *flt3r; |
| 116 | FILE *flt4r; |
| 117 | FILE *flt1i; |
| 118 | FILE *flt2i; |
| 119 | FILE *flt3i; |
| 120 | FILE *flt4i; |
| 121 | int i; |
| 122 | |
| 123 | if ( (flt1r = fopen(SURROUND_FILE_1R, "rb")) == NULL ) { |
| 124 | ALOGE("%s: Cannot open filter co-efficient " |
| 125 | "file %s", __func__, SURROUND_FILE_1R); |
| 126 | return -EINVAL; |
| 127 | } |
| 128 | |
| 129 | if ( (flt2r = fopen(SURROUND_FILE_2R, "rb")) == NULL ) { |
| 130 | ALOGE("%s: Cannot open filter " |
| 131 | "co-efficient file %s", __func__, SURROUND_FILE_2R); |
| 132 | return -EINVAL; |
| 133 | } |
| 134 | |
| 135 | if ( (flt3r = fopen(SURROUND_FILE_3R, "rb")) == NULL ) { |
| 136 | ALOGE("%s: Cannot open filter " |
| 137 | "co-efficient file %s", __func__, SURROUND_FILE_3R); |
| 138 | return -EINVAL; |
| 139 | } |
| 140 | |
| 141 | if ( (flt4r = fopen(SURROUND_FILE_4R, "rb")) == NULL ) { |
| 142 | ALOGE("%s: Cannot open filter " |
| 143 | "co-efficient file %s", __func__, SURROUND_FILE_4R); |
| 144 | return -EINVAL; |
| 145 | } |
| 146 | |
| 147 | if ( (flt1i = fopen(SURROUND_FILE_1I, "rb")) == NULL ) { |
| 148 | ALOGE("%s: Cannot open filter " |
| 149 | "co-efficient file %s", __func__, SURROUND_FILE_1I); |
| 150 | return -EINVAL; |
| 151 | } |
| 152 | |
| 153 | if ( (flt2i = fopen(SURROUND_FILE_2I, "rb")) == NULL ) { |
| 154 | ALOGE("%s: Cannot open filter " |
| 155 | "co-efficient file %s", __func__, SURROUND_FILE_2I); |
| 156 | return -EINVAL; |
| 157 | } |
| 158 | |
| 159 | if ( (flt3i = fopen(SURROUND_FILE_3I, "rb")) == NULL ) { |
| 160 | ALOGE("%s: Cannot open filter " |
| 161 | "co-efficient file %s", __func__, SURROUND_FILE_3I); |
| 162 | return -EINVAL; |
| 163 | } |
| 164 | |
| 165 | if ( (flt4i = fopen(SURROUND_FILE_4I, "rb")) == NULL ) { |
| 166 | ALOGE("%s: Cannot open filter " |
| 167 | "co-efficient file %s", __func__, SURROUND_FILE_4I); |
| 168 | return -EINVAL; |
| 169 | } |
| 170 | ALOGV("%s: readCoeffsFromFile all filter " |
| 171 | "files opened", __func__); |
| 172 | |
| 173 | for (i=0; i<COEFF_ARRAY_SIZE; i++) { |
| 174 | ssrmod.real_coeffs[i] = (Word16 *)calloc(FILT_SIZE, sizeof(Word16)); |
| 175 | } |
| 176 | for (i=0; i<COEFF_ARRAY_SIZE; i++) { |
| 177 | ssrmod.imag_coeffs[i] = (Word16 *)calloc(FILT_SIZE, sizeof(Word16)); |
| 178 | } |
| 179 | |
| 180 | /* Read real co-efficients */ |
| 181 | if (NULL != ssrmod.real_coeffs[0]) { |
| 182 | fread(ssrmod.real_coeffs[0], sizeof(int16), FILT_SIZE, flt1r); |
| 183 | } |
| 184 | if (NULL != ssrmod.real_coeffs[0]) { |
| 185 | fread(ssrmod.real_coeffs[1], sizeof(int16), FILT_SIZE, flt2r); |
| 186 | } |
| 187 | if (NULL != ssrmod.real_coeffs[0]) { |
| 188 | fread(ssrmod.real_coeffs[2], sizeof(int16), FILT_SIZE, flt3r); |
| 189 | } |
| 190 | if (NULL != ssrmod.real_coeffs[0]) { |
| 191 | fread(ssrmod.real_coeffs[3], sizeof(int16), FILT_SIZE, flt4r); |
| 192 | } |
| 193 | |
| 194 | /* read imaginary co-efficients */ |
| 195 | if (NULL != ssrmod.imag_coeffs[0]) { |
| 196 | fread(ssrmod.imag_coeffs[0], sizeof(int16), FILT_SIZE, flt1i); |
| 197 | } |
| 198 | if (NULL != ssrmod.imag_coeffs[0]) { |
| 199 | fread(ssrmod.imag_coeffs[1], sizeof(int16), FILT_SIZE, flt2i); |
| 200 | } |
| 201 | if (NULL != ssrmod.imag_coeffs[0]) { |
| 202 | fread(ssrmod.imag_coeffs[2], sizeof(int16), FILT_SIZE, flt3i); |
| 203 | } |
| 204 | if (NULL != ssrmod.imag_coeffs[0]) { |
| 205 | fread(ssrmod.imag_coeffs[3], sizeof(int16), FILT_SIZE, flt4i); |
| 206 | } |
| 207 | |
| 208 | fclose(flt1r); |
| 209 | fclose(flt2r); |
| 210 | fclose(flt3r); |
| 211 | fclose(flt4r); |
| 212 | fclose(flt1i); |
| 213 | fclose(flt2i); |
| 214 | fclose(flt3i); |
| 215 | fclose(flt4i); |
| 216 | |
| 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | static int32_t ssr_init_surround_sound_lib(unsigned long buffersize) |
| 221 | { |
| 222 | /* sub_woofer channel assignment: default as first |
| 223 | microphone input channel */ |
| 224 | int sub_woofer = 0; |
| 225 | /* frequency upper bound for sub_woofer: |
| 226 | frequency=(low_freq-1)/FFT_SIZE*samplingRate, default as 4 */ |
| 227 | int low_freq = 4; |
| 228 | /* frequency upper bound for spatial processing: |
| 229 | frequency=(high_freq-1)/FFT_SIZE*samplingRate, default as 100 */ |
| 230 | int high_freq = 100; |
| 231 | int i, ret = 0; |
| 232 | |
| 233 | ssrmod.surround_input_bufferIdx = 0; |
| 234 | ssrmod.surround_output_bufferIdx = 0; |
| 235 | |
| 236 | if ( ssrmod.surround_obj ) { |
| 237 | ALOGE("%s: ola filter library is already initialized", __func__); |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | /* Allocate memory for input buffer */ |
| 242 | ssrmod.surround_input_buffer = (Word16 *) calloc(2 * SSR_INPUT_FRAME_SIZE, |
| 243 | sizeof(Word16)); |
| 244 | if ( !ssrmod.surround_input_buffer ) { |
| 245 | ALOGE("%s: Memory allocation failure. Not able to allocate " |
| 246 | "memory for surroundInputBuffer", __func__); |
| 247 | goto init_fail; |
| 248 | } |
| 249 | |
| 250 | /* Allocate memory for output buffer */ |
| 251 | ssrmod.surround_output_buffer = (Word16 *) calloc(2 * SSR_OUTPUT_FRAME_SIZE, |
| 252 | sizeof(Word16)); |
| 253 | if ( !ssrmod.surround_output_buffer ) { |
| 254 | ALOGE("%s: Memory allocation failure. Not able to " |
| 255 | "allocate memory for surroundOutputBuffer", __func__); |
| 256 | goto init_fail; |
| 257 | } |
| 258 | |
| 259 | /* Allocate memory for real and imag coeffs array */ |
| 260 | ssrmod.real_coeffs = (Word16 **) calloc(COEFF_ARRAY_SIZE, sizeof(Word16 *)); |
| 261 | if ( !ssrmod.real_coeffs ) { |
| 262 | ALOGE("%s: Memory allocation failure during real " |
| 263 | "Coefficient array", __func__); |
| 264 | goto init_fail; |
| 265 | } |
| 266 | |
| 267 | ssrmod.imag_coeffs = (Word16 **) calloc(COEFF_ARRAY_SIZE, sizeof(Word16 *)); |
| 268 | if ( !ssrmod.imag_coeffs ) { |
| 269 | ALOGE("%s: Memory allocation failure during imaginary " |
| 270 | "Coefficient array", __func__); |
| 271 | goto init_fail; |
| 272 | } |
| 273 | |
| 274 | if( ssr_read_coeffs_from_file() != 0) { |
| 275 | ALOGE("%s: Error while loading coeffs from file", __func__); |
| 276 | goto init_fail; |
| 277 | } |
| 278 | |
| 279 | ssrmod.surround_filters_handle = dlopen(LIB_SURROUND_PROC, RTLD_NOW); |
| 280 | if (ssrmod.surround_filters_handle == NULL) { |
| 281 | ALOGE("%s: DLOPEN failed for %s", __func__, LIB_SURROUND_PROC); |
| 282 | } else { |
| 283 | ALOGV("%s: DLOPEN successful for %s", __func__, LIB_SURROUND_PROC); |
| 284 | ssrmod.surround_filters_init = (surround_filters_init_t) |
| 285 | dlsym(ssrmod.surround_filters_handle, "surround_filters_init"); |
| 286 | |
| 287 | ssrmod.surround_filters_release = (surround_filters_release_t) |
| 288 | dlsym(ssrmod.surround_filters_handle, "surround_filters_release"); |
| 289 | |
| 290 | ssrmod.surround_filters_set_channel_map = (surround_filters_set_channel_map_t) |
| 291 | dlsym(ssrmod.surround_filters_handle, "surround_filters_set_channel_map"); |
| 292 | |
| 293 | ssrmod.surround_filters_intl_process = (surround_filters_intl_process_t) |
| 294 | dlsym(ssrmod.surround_filters_handle, "surround_filters_intl_process"); |
| 295 | |
| 296 | if (!ssrmod.surround_filters_init || |
| 297 | !ssrmod.surround_filters_release || |
| 298 | !ssrmod.surround_filters_set_channel_map || |
| 299 | !ssrmod.surround_filters_intl_process){ |
| 300 | ALOGW("%s: Could not find the one of the symbols from %s", |
| 301 | __func__, LIB_SURROUND_PROC); |
| 302 | goto init_fail; |
| 303 | } |
| 304 | } |
| 305 | |
| 306 | /* calculate the size of data to allocate for surround_obj */ |
| 307 | ret = ssrmod.surround_filters_init(NULL, |
| 308 | 6, // Num output channel |
| 309 | 4, // Num input channel |
| 310 | ssrmod.real_coeffs, // Coeffs hardcoded in header |
| 311 | ssrmod.imag_coeffs, // Coeffs hardcoded in header |
| 312 | sub_woofer, |
| 313 | low_freq, |
| 314 | high_freq, |
| 315 | NULL); |
| 316 | |
| 317 | if ( ret > 0 ) { |
| 318 | ALOGV("%s: Allocating surroundObj size is %d", __func__, ret); |
| 319 | ssrmod.surround_obj = (void *)malloc(ret); |
| 320 | memset(ssrmod.surround_obj,0,ret); |
| 321 | if (NULL != ssrmod.surround_obj) { |
| 322 | /* initialize after allocating the memory for surround_obj */ |
| 323 | ret = ssrmod.surround_filters_init(ssrmod.surround_obj, |
| 324 | 6, |
| 325 | 4, |
| 326 | ssrmod.real_coeffs, |
| 327 | ssrmod.imag_coeffs, |
| 328 | sub_woofer, |
| 329 | low_freq, |
| 330 | high_freq, |
| 331 | NULL); |
| 332 | if (0 != ret) { |
| 333 | ALOGE("%s: surround_filters_init failed with ret:%d",__func__, ret); |
| 334 | ssrmod.surround_filters_release(ssrmod.surround_obj); |
| 335 | goto init_fail; |
| 336 | } |
| 337 | } else { |
| 338 | ALOGE("%s: Allocationg surround_obj failed", __func__); |
| 339 | goto init_fail; |
| 340 | } |
| 341 | } else { |
| 342 | ALOGE("%s: surround_filters_init(surround_obj=Null) " |
| 343 | "failed with ret: %d", __func__, ret); |
| 344 | goto init_fail; |
| 345 | } |
| 346 | |
| 347 | (void) ssrmod.surround_filters_set_channel_map(ssrmod.surround_obj, chan_map); |
| 348 | |
| 349 | return 0; |
| 350 | |
| 351 | init_fail: |
| 352 | if (ssrmod.surround_obj) { |
| 353 | free(ssrmod.surround_obj); |
| 354 | ssrmod.surround_obj = NULL; |
| 355 | } |
| 356 | if (ssrmod.surround_output_buffer) { |
| 357 | free(ssrmod.surround_output_buffer); |
| 358 | ssrmod.surround_output_buffer = NULL; |
| 359 | } |
| 360 | if (ssrmod.surround_input_buffer) { |
| 361 | free(ssrmod.surround_input_buffer); |
| 362 | ssrmod.surround_input_buffer = NULL; |
| 363 | } |
| 364 | if (ssrmod.real_coeffs){ |
| 365 | for (i =0; i<COEFF_ARRAY_SIZE; i++ ) { |
| 366 | if (ssrmod.real_coeffs[i]) { |
| 367 | free(ssrmod.real_coeffs[i]); |
| 368 | ssrmod.real_coeffs[i] = NULL; |
| 369 | } |
| 370 | } |
| 371 | free(ssrmod.real_coeffs); |
| 372 | ssrmod.real_coeffs = NULL; |
| 373 | } |
| 374 | if (ssrmod.imag_coeffs){ |
| 375 | for (i =0; i<COEFF_ARRAY_SIZE; i++ ) { |
| 376 | if (ssrmod.imag_coeffs[i]) { |
| 377 | free(ssrmod.imag_coeffs[i]); |
| 378 | ssrmod.imag_coeffs[i] = NULL; |
| 379 | } |
| 380 | } |
| 381 | free(ssrmod.imag_coeffs); |
| 382 | ssrmod.imag_coeffs = NULL; |
| 383 | } |
| 384 | |
| 385 | return -ENOMEM; |
| 386 | } |
| 387 | |
| 388 | int32_t audio_extn_ssr_update_enabled(struct audio_device *adev) |
| 389 | { |
| 390 | char ssr_enabled[PROPERTY_VALUE_MAX] = "false"; |
| 391 | |
| 392 | property_get("ro.qc.sdk.audio.ssr",ssr_enabled,"0"); |
| 393 | if (!strncmp("true", ssr_enabled, 4)) { |
| 394 | ALOGD("%s: surround sound recording is supported", __func__); |
| 395 | ssrmod.is_ssr_enabled = true; |
| 396 | } else { |
| 397 | ALOGD("%s: surround sound recording is not supported", __func__); |
| 398 | ssrmod.is_ssr_enabled = false; |
| 399 | } |
| 400 | return 0; |
| 401 | } |
| 402 | |
| 403 | bool audio_extn_ssr_get_enabled() |
| 404 | { |
| 405 | ALOGV("%s: is_ssr_enabled:%d", __func__, ssrmod.is_ssr_enabled); |
| 406 | return (ssrmod.is_ssr_enabled ? true: false); |
| 407 | } |
| 408 | |
| 409 | int32_t audio_extn_ssr_init(struct audio_device *adev, |
| 410 | struct stream_in *in) |
| 411 | { |
| 412 | uint32_t ret; |
| 413 | char c_multi_ch_dump[128] = {0}; |
| 414 | uint32_t buffer_size; |
| 415 | |
| 416 | ALOGD("%s: ssr case ", __func__); |
| 417 | in->config.channels = SSR_CHANNEL_COUNT; |
| 418 | in->config.period_size = SSR_PERIOD_SIZE; |
| 419 | in->config.period_count = SSR_PERIOD_COUNT; |
| 420 | |
| 421 | buffer_size = (SSR_PERIOD_SIZE)*(SSR_PERIOD_COUNT); |
| 422 | ALOGD("%s: buffer_size: %d", __func__, buffer_size); |
| 423 | |
| 424 | ret = ssr_init_surround_sound_lib(buffer_size); |
| 425 | if (0 != ret) { |
| 426 | ALOGE("%s: initSurroundSoundLibrary failed: %d " |
| 427 | "handle->bufferSize:%d", __func__, ret, buffer_size); |
| 428 | return ret; |
| 429 | } |
| 430 | |
| 431 | property_get("ssr.pcmdump",c_multi_ch_dump,"0"); |
| 432 | if (0 == strncmp("true",c_multi_ch_dump, sizeof("ssr.dump-pcm"))) { |
| 433 | /* Remember to change file system permission of data(e.g. chmod 777 data/), |
| 434 | otherwise, fopen may fail */ |
| 435 | if ( !ssrmod.fp_4ch) |
| 436 | ssrmod.fp_4ch = fopen("/data/media/0/4ch_ssr.pcm", "wb"); |
| 437 | if ( !ssrmod.fp_6ch) |
| 438 | ssrmod.fp_6ch = fopen("/data/media/0/6ch_ssr.pcm", "wb"); |
| 439 | if ((!ssrmod.fp_4ch) || (!ssrmod.fp_6ch)) |
| 440 | ALOGE("%s: mfp_4ch or mfp_6ch open failed: mfp_4ch:%p mfp_6ch:%p", |
| 441 | __func__, ssrmod.fp_4ch, ssrmod.fp_6ch); |
| 442 | } |
| 443 | |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | int32_t audio_extn_ssr_deinit() |
| 448 | { |
| 449 | int i; |
| 450 | |
| 451 | if (ssrmod.surround_obj) { |
| 452 | ALOGD("%s: entry", __func__); |
| 453 | ssrmod.surround_filters_release(ssrmod.surround_obj); |
| 454 | if (ssrmod.surround_obj) |
| 455 | free(ssrmod.surround_obj); |
| 456 | ssrmod.surround_obj = NULL; |
| 457 | if (ssrmod.real_coeffs){ |
| 458 | for (i =0; i<COEFF_ARRAY_SIZE; i++ ) { |
| 459 | if (ssrmod.real_coeffs[i]) { |
| 460 | free(ssrmod.real_coeffs[i]); |
| 461 | ssrmod.real_coeffs[i] = NULL; |
| 462 | } |
| 463 | } |
| 464 | free(ssrmod.real_coeffs); |
| 465 | ssrmod.real_coeffs = NULL; |
| 466 | } |
| 467 | if (ssrmod.imag_coeffs){ |
| 468 | for (i =0; i<COEFF_ARRAY_SIZE; i++ ) { |
| 469 | if (ssrmod.imag_coeffs[i]) { |
| 470 | free(ssrmod.imag_coeffs[i]); |
| 471 | ssrmod.imag_coeffs[i] = NULL; |
| 472 | } |
| 473 | } |
| 474 | free(ssrmod.imag_coeffs); |
| 475 | ssrmod.imag_coeffs = NULL; |
| 476 | } |
| 477 | if (ssrmod.surround_output_buffer){ |
| 478 | free(ssrmod.surround_output_buffer); |
| 479 | ssrmod.surround_output_buffer = NULL; |
| 480 | } |
| 481 | if (ssrmod.surround_input_buffer) { |
| 482 | free(ssrmod.surround_input_buffer); |
| 483 | ssrmod.surround_input_buffer = NULL; |
| 484 | } |
| 485 | |
| 486 | if ( ssrmod.fp_4ch ) fclose(ssrmod.fp_4ch); |
| 487 | if ( ssrmod.fp_6ch ) fclose(ssrmod.fp_6ch); |
| 488 | } |
| 489 | |
| 490 | if(ssrmod.surround_filters_handle) |
| 491 | { |
| 492 | dlclose(ssrmod.surround_filters_handle); |
| 493 | ssrmod.surround_filters_handle = NULL; |
| 494 | } |
| 495 | ALOGD("%s: exit", __func__); |
| 496 | |
| 497 | return 0; |
| 498 | } |
| 499 | |
| 500 | int32_t audio_extn_ssr_read(struct audio_stream_in *stream, |
| 501 | void *buffer, size_t bytes) |
| 502 | { |
| 503 | int processed = 0; |
| 504 | int processed_pending; |
| 505 | void *buffer_start = buffer; |
| 506 | unsigned period_bytes; |
| 507 | unsigned period_samples; |
| 508 | int read_pending, n; |
| 509 | size_t read_bytes = 0; |
| 510 | int samples = bytes >> 1; |
| 511 | |
| 512 | struct stream_in *in = (struct stream_in *)stream; |
| 513 | struct audio_device *adev = in->dev; |
| 514 | |
| 515 | period_bytes = in->config.period_size; |
| 516 | ALOGD("%s: period_size: %d", __func__, in->config.period_size); |
| 517 | period_samples = period_bytes >> 1; |
| 518 | |
| 519 | if (!ssrmod.surround_obj) |
| 520 | return -ENOMEM; |
| 521 | |
| 522 | do { |
| 523 | if (ssrmod.surround_output_bufferIdx > 0) { |
| 524 | ALOGV("%s: copy processed output " |
| 525 | "to buffer, surround_output_bufferIdx = %d", |
| 526 | __func__, ssrmod.surround_output_bufferIdx); |
| 527 | /* Copy processed output to buffer */ |
| 528 | processed_pending = ssrmod.surround_output_bufferIdx; |
| 529 | if (processed_pending > (samples - processed)) { |
| 530 | processed_pending = (samples - processed); |
| 531 | } |
| 532 | memcpy(buffer, ssrmod.surround_output_buffer, processed_pending * sizeof(Word16)); |
| 533 | buffer = (char*)buffer + processed_pending * sizeof(Word16); |
| 534 | processed += processed_pending; |
| 535 | if (ssrmod.surround_output_bufferIdx > processed_pending) { |
| 536 | /* Shift leftover samples to beginning of the buffer */ |
| 537 | memcpy(&ssrmod.surround_output_buffer[0], |
| 538 | &ssrmod.surround_output_buffer[processed_pending], |
| 539 | (ssrmod.surround_output_bufferIdx - processed_pending) * sizeof(Word16)); |
| 540 | } |
| 541 | ssrmod.surround_output_bufferIdx -= processed_pending; |
| 542 | } |
| 543 | |
| 544 | if (processed >= samples) { |
| 545 | ALOGV("%s: done processing buffer, " |
| 546 | "processed = %d", __func__, processed); |
| 547 | /* Done processing this buffer */ |
| 548 | break; |
| 549 | } |
| 550 | |
| 551 | /* Fill input buffer until there is enough to process */ |
| 552 | read_pending = SSR_INPUT_FRAME_SIZE - ssrmod.surround_input_bufferIdx; |
| 553 | read_bytes = ssrmod.surround_input_bufferIdx; |
| 554 | while (in->pcm && read_pending > 0) { |
| 555 | n = pcm_read(in->pcm, &ssrmod.surround_input_buffer[read_bytes], |
| 556 | period_bytes); |
| 557 | ALOGV("%s: pcm_read() returned n = %d buffer:%p size:%d", __func__, |
| 558 | n, &ssrmod.surround_input_buffer[read_bytes], period_bytes); |
| 559 | if (n && n != -EAGAIN) { |
| 560 | /* Recovery part of pcm_read. TODO:split recovery */ |
| 561 | return (ssize_t)n; |
| 562 | } |
| 563 | else if (n < 0) { |
| 564 | /* Recovery is part of pcm_write. TODO split is later */ |
| 565 | return (ssize_t)n; |
| 566 | } |
| 567 | else { |
| 568 | read_pending -= period_samples; |
| 569 | read_bytes += period_samples; |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | |
| 574 | if (ssrmod.fp_4ch) { |
| 575 | fwrite( ssrmod.surround_input_buffer, 1, |
| 576 | SSR_INPUT_FRAME_SIZE * sizeof(Word16), ssrmod.fp_4ch); |
| 577 | } |
| 578 | |
| 579 | /* apply ssr libs to conver 4ch to 6ch */ |
| 580 | ssrmod.surround_filters_intl_process(ssrmod.surround_obj, |
| 581 | &ssrmod.surround_output_buffer[ssrmod.surround_output_bufferIdx], |
| 582 | (Word16 *)ssrmod.surround_input_buffer); |
| 583 | |
| 584 | /* Shift leftover samples to beginning of input buffer */ |
| 585 | if (read_pending < 0) { |
| 586 | memcpy(&ssrmod.surround_input_buffer[0], |
| 587 | &ssrmod.surround_input_buffer[SSR_INPUT_FRAME_SIZE], |
| 588 | (-read_pending) * sizeof(Word16)); |
| 589 | } |
| 590 | ssrmod.surround_input_bufferIdx = -read_pending; |
| 591 | |
| 592 | if (ssrmod.fp_6ch) { |
| 593 | fwrite( &ssrmod.surround_output_buffer[ssrmod.surround_output_bufferIdx], |
| 594 | 1, SSR_OUTPUT_FRAME_SIZE * sizeof(Word16), ssrmod.fp_6ch); |
| 595 | } |
| 596 | |
| 597 | ssrmod.surround_output_bufferIdx += SSR_OUTPUT_FRAME_SIZE; |
| 598 | ALOGV("%s: do_while loop: processed=%d, samples=%d\n", __func__, processed, samples); |
| 599 | } while (in->pcm && processed < samples); |
| 600 | read_bytes = processed * sizeof(Word16); |
| 601 | buffer = buffer_start; |
| 602 | |
| 603 | return 0; |
| 604 | } |
| 605 | |
| 606 | void audio_extn_ssr_get_parameters(struct str_parms *query, |
| 607 | struct str_parms *reply) |
| 608 | { |
| 609 | int ret, val; |
| 610 | char value[32]={0}; |
| 611 | |
| 612 | ret = str_parms_get_str(query, AUDIO_PARAMETER_KEY_SSR, value, sizeof(value)); |
| 613 | |
| 614 | if (ret >= 0) { |
| 615 | memcpy(value, "true", 4); |
| 616 | str_parms_add_str(reply, AUDIO_PARAMETER_KEY_SSR, value); |
| 617 | } |
| 618 | } |
| 619 | #endif /* SSR_ENABLED */ |