Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include <pjmedia-audiodev/audiodev_imp.h> |
| 21 | #include <pj/assert.h> |
| 22 | #include <pj/log.h> |
| 23 | #include <pj/os.h> |
| 24 | #include <pj/string.h> |
| 25 | |
| 26 | #if PJMEDIA_AUDIO_DEV_HAS_PORTAUDIO |
| 27 | |
| 28 | #include <portaudio.h> |
| 29 | |
| 30 | #define THIS_FILE "pa_dev.c" |
| 31 | #define DRIVER_NAME "PA" |
| 32 | |
| 33 | /* Enable call to PaUtil_SetDebugPrintFunction, but this is not always |
| 34 | * available across all PortAudio versions (?) |
| 35 | */ |
| 36 | /*#define USE_PA_DEBUG_PRINT */ |
| 37 | |
| 38 | struct pa_aud_factory |
| 39 | { |
| 40 | pjmedia_aud_dev_factory base; |
| 41 | pj_pool_factory *pf; |
| 42 | pj_pool_t *pool; |
| 43 | }; |
| 44 | |
| 45 | |
| 46 | /* |
| 47 | * Sound stream descriptor. |
| 48 | * This struct may be used for both unidirectional or bidirectional sound |
| 49 | * streams. |
| 50 | */ |
| 51 | struct pa_aud_stream |
| 52 | { |
| 53 | pjmedia_aud_stream base; |
| 54 | |
| 55 | pj_pool_t *pool; |
| 56 | pj_str_t name; |
| 57 | pjmedia_dir dir; |
| 58 | int play_id; |
| 59 | int rec_id; |
| 60 | int bytes_per_sample; |
| 61 | pj_uint32_t samples_per_sec; |
| 62 | unsigned samples_per_frame; |
| 63 | int channel_count; |
| 64 | |
| 65 | PaStream *rec_strm; |
| 66 | PaStream *play_strm; |
| 67 | |
| 68 | void *user_data; |
| 69 | pjmedia_aud_rec_cb rec_cb; |
| 70 | pjmedia_aud_play_cb play_cb; |
| 71 | |
| 72 | pj_timestamp play_timestamp; |
| 73 | pj_timestamp rec_timestamp; |
| 74 | pj_uint32_t underflow; |
| 75 | pj_uint32_t overflow; |
| 76 | |
| 77 | pj_bool_t quit_flag; |
| 78 | |
| 79 | pj_bool_t rec_thread_exited; |
| 80 | pj_bool_t rec_thread_initialized; |
| 81 | pj_thread_desc rec_thread_desc; |
| 82 | pj_thread_t *rec_thread; |
| 83 | |
| 84 | pj_bool_t play_thread_exited; |
| 85 | pj_bool_t play_thread_initialized; |
| 86 | pj_thread_desc play_thread_desc; |
| 87 | pj_thread_t *play_thread; |
| 88 | |
| 89 | /* Sometime the record callback does not return framesize as configured |
| 90 | * (e.g: in OSS), while this module must guarantee returning framesize |
| 91 | * as configured in the creation settings. In this case, we need a buffer |
| 92 | * for the recorded samples. |
| 93 | */ |
| 94 | pj_int16_t *rec_buf; |
| 95 | unsigned rec_buf_count; |
| 96 | |
| 97 | /* Sometime the player callback does not request framesize as configured |
| 98 | * (e.g: in Linux OSS) while sound device will always get samples from |
| 99 | * the other component as many as configured samples_per_frame. |
| 100 | */ |
| 101 | pj_int16_t *play_buf; |
| 102 | unsigned play_buf_count; |
| 103 | }; |
| 104 | |
| 105 | |
| 106 | /* Factory prototypes */ |
| 107 | static pj_status_t pa_init(pjmedia_aud_dev_factory *f); |
| 108 | static pj_status_t pa_destroy(pjmedia_aud_dev_factory *f); |
| 109 | static pj_status_t pa_refresh(pjmedia_aud_dev_factory *f); |
| 110 | static unsigned pa_get_dev_count(pjmedia_aud_dev_factory *f); |
| 111 | static pj_status_t pa_get_dev_info(pjmedia_aud_dev_factory *f, |
| 112 | unsigned index, |
| 113 | pjmedia_aud_dev_info *info); |
| 114 | static pj_status_t pa_default_param(pjmedia_aud_dev_factory *f, |
| 115 | unsigned index, |
| 116 | pjmedia_aud_param *param); |
| 117 | static pj_status_t pa_create_stream(pjmedia_aud_dev_factory *f, |
| 118 | const pjmedia_aud_param *param, |
| 119 | pjmedia_aud_rec_cb rec_cb, |
| 120 | pjmedia_aud_play_cb play_cb, |
| 121 | void *user_data, |
| 122 | pjmedia_aud_stream **p_aud_strm); |
| 123 | |
| 124 | /* Stream prototypes */ |
| 125 | static pj_status_t strm_get_param(pjmedia_aud_stream *strm, |
| 126 | pjmedia_aud_param *param); |
| 127 | static pj_status_t strm_get_cap(pjmedia_aud_stream *strm, |
| 128 | pjmedia_aud_dev_cap cap, |
| 129 | void *value); |
| 130 | static pj_status_t strm_set_cap(pjmedia_aud_stream *strm, |
| 131 | pjmedia_aud_dev_cap cap, |
| 132 | const void *value); |
| 133 | static pj_status_t strm_start(pjmedia_aud_stream *strm); |
| 134 | static pj_status_t strm_stop(pjmedia_aud_stream *strm); |
| 135 | static pj_status_t strm_destroy(pjmedia_aud_stream *strm); |
| 136 | |
| 137 | |
| 138 | static pjmedia_aud_dev_factory_op pa_op = |
| 139 | { |
| 140 | &pa_init, |
| 141 | &pa_destroy, |
| 142 | &pa_get_dev_count, |
| 143 | &pa_get_dev_info, |
| 144 | &pa_default_param, |
| 145 | &pa_create_stream, |
| 146 | &pa_refresh |
| 147 | }; |
| 148 | |
| 149 | static pjmedia_aud_stream_op pa_strm_op = |
| 150 | { |
| 151 | &strm_get_param, |
| 152 | &strm_get_cap, |
| 153 | &strm_set_cap, |
| 154 | &strm_start, |
| 155 | &strm_stop, |
| 156 | &strm_destroy |
| 157 | }; |
| 158 | |
| 159 | |
| 160 | |
| 161 | static int PaRecorderCallback(const void *input, |
| 162 | void *output, |
| 163 | unsigned long frameCount, |
| 164 | const PaStreamCallbackTimeInfo* timeInfo, |
| 165 | PaStreamCallbackFlags statusFlags, |
| 166 | void *userData ) |
| 167 | { |
| 168 | struct pa_aud_stream *stream = (struct pa_aud_stream*) userData; |
| 169 | pj_status_t status = 0; |
| 170 | unsigned nsamples; |
| 171 | |
| 172 | PJ_UNUSED_ARG(output); |
| 173 | PJ_UNUSED_ARG(timeInfo); |
| 174 | |
| 175 | if (stream->quit_flag) |
| 176 | goto on_break; |
| 177 | |
| 178 | if (input == NULL) |
| 179 | return paContinue; |
| 180 | |
| 181 | /* Known cases of callback's thread: |
| 182 | * - The thread may be changed in the middle of a session, e.g: in MacOS |
| 183 | * it happens when plugging/unplugging headphone. |
| 184 | * - The same thread may be reused in consecutive sessions. The first |
| 185 | * session will leave TLS set, but release the TLS data address, |
| 186 | * so the second session must re-register the callback's thread. |
| 187 | */ |
| 188 | if (stream->rec_thread_initialized == 0 || !pj_thread_is_registered()) |
| 189 | { |
| 190 | pj_bzero(stream->rec_thread_desc, sizeof(pj_thread_desc)); |
| 191 | status = pj_thread_register("pa_rec", stream->rec_thread_desc, |
| 192 | &stream->rec_thread); |
| 193 | stream->rec_thread_initialized = 1; |
| 194 | PJ_LOG(5,(THIS_FILE, "Recorder thread started")); |
| 195 | } |
| 196 | |
| 197 | if (statusFlags & paInputUnderflow) |
| 198 | ++stream->underflow; |
| 199 | if (statusFlags & paInputOverflow) |
| 200 | ++stream->overflow; |
| 201 | |
| 202 | /* Calculate number of samples we've got */ |
| 203 | nsamples = frameCount * stream->channel_count + stream->rec_buf_count; |
| 204 | |
| 205 | if (nsamples >= stream->samples_per_frame) |
| 206 | { |
| 207 | /* If buffer is not empty, combine the buffer with the just incoming |
| 208 | * samples, then call put_frame. |
| 209 | */ |
| 210 | if (stream->rec_buf_count) { |
| 211 | unsigned chunk_count = 0; |
| 212 | pjmedia_frame frame; |
| 213 | |
| 214 | chunk_count = stream->samples_per_frame - stream->rec_buf_count; |
| 215 | pjmedia_copy_samples(stream->rec_buf + stream->rec_buf_count, |
| 216 | (pj_int16_t*)input, chunk_count); |
| 217 | |
| 218 | frame.type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 219 | frame.buf = (void*) stream->rec_buf; |
| 220 | frame.size = stream->samples_per_frame * stream->bytes_per_sample; |
| 221 | frame.timestamp.u64 = stream->rec_timestamp.u64; |
| 222 | frame.bit_info = 0; |
| 223 | |
| 224 | status = (*stream->rec_cb)(stream->user_data, &frame); |
| 225 | |
| 226 | input = (pj_int16_t*) input + chunk_count; |
| 227 | nsamples -= stream->samples_per_frame; |
| 228 | stream->rec_buf_count = 0; |
| 229 | stream->rec_timestamp.u64 += stream->samples_per_frame / |
| 230 | stream->channel_count; |
| 231 | } |
| 232 | |
| 233 | /* Give all frames we have */ |
| 234 | while (nsamples >= stream->samples_per_frame && status == 0) { |
| 235 | pjmedia_frame frame; |
| 236 | |
| 237 | frame.type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 238 | frame.buf = (void*) input; |
| 239 | frame.size = stream->samples_per_frame * stream->bytes_per_sample; |
| 240 | frame.timestamp.u64 = stream->rec_timestamp.u64; |
| 241 | frame.bit_info = 0; |
| 242 | |
| 243 | status = (*stream->rec_cb)(stream->user_data, &frame); |
| 244 | |
| 245 | input = (pj_int16_t*) input + stream->samples_per_frame; |
| 246 | nsamples -= stream->samples_per_frame; |
| 247 | stream->rec_timestamp.u64 += stream->samples_per_frame / |
| 248 | stream->channel_count; |
| 249 | } |
| 250 | |
| 251 | /* Store the remaining samples into the buffer */ |
| 252 | if (nsamples && status == 0) { |
| 253 | stream->rec_buf_count = nsamples; |
| 254 | pjmedia_copy_samples(stream->rec_buf, (pj_int16_t*)input, |
| 255 | nsamples); |
| 256 | } |
| 257 | |
| 258 | } else { |
| 259 | /* Not enough samples, let's just store them in the buffer */ |
| 260 | pjmedia_copy_samples(stream->rec_buf + stream->rec_buf_count, |
| 261 | (pj_int16_t*)input, |
| 262 | frameCount * stream->channel_count); |
| 263 | stream->rec_buf_count += frameCount * stream->channel_count; |
| 264 | } |
| 265 | |
| 266 | if (status==0) |
| 267 | return paContinue; |
| 268 | |
| 269 | on_break: |
| 270 | stream->rec_thread_exited = 1; |
| 271 | return paAbort; |
| 272 | } |
| 273 | |
| 274 | static int PaPlayerCallback( const void *input, |
| 275 | void *output, |
| 276 | unsigned long frameCount, |
| 277 | const PaStreamCallbackTimeInfo* timeInfo, |
| 278 | PaStreamCallbackFlags statusFlags, |
| 279 | void *userData ) |
| 280 | { |
| 281 | struct pa_aud_stream *stream = (struct pa_aud_stream*) userData; |
| 282 | pj_status_t status = 0; |
| 283 | unsigned nsamples_req = frameCount * stream->channel_count; |
| 284 | |
| 285 | PJ_UNUSED_ARG(input); |
| 286 | PJ_UNUSED_ARG(timeInfo); |
| 287 | |
| 288 | if (stream->quit_flag) |
| 289 | goto on_break; |
| 290 | |
| 291 | if (output == NULL) |
| 292 | return paContinue; |
| 293 | |
| 294 | /* Known cases of callback's thread: |
| 295 | * - The thread may be changed in the middle of a session, e.g: in MacOS |
| 296 | * it happens when plugging/unplugging headphone. |
| 297 | * - The same thread may be reused in consecutive sessions. The first |
| 298 | * session will leave TLS set, but release the TLS data address, |
| 299 | * so the second session must re-register the callback's thread. |
| 300 | */ |
| 301 | if (stream->play_thread_initialized == 0 || !pj_thread_is_registered()) |
| 302 | { |
| 303 | pj_bzero(stream->play_thread_desc, sizeof(pj_thread_desc)); |
| 304 | status = pj_thread_register("portaudio", stream->play_thread_desc, |
| 305 | &stream->play_thread); |
| 306 | stream->play_thread_initialized = 1; |
| 307 | PJ_LOG(5,(THIS_FILE, "Player thread started")); |
| 308 | } |
| 309 | |
| 310 | if (statusFlags & paOutputUnderflow) |
| 311 | ++stream->underflow; |
| 312 | if (statusFlags & paOutputOverflow) |
| 313 | ++stream->overflow; |
| 314 | |
| 315 | |
| 316 | /* Check if any buffered samples */ |
| 317 | if (stream->play_buf_count) { |
| 318 | /* samples buffered >= requested by sound device */ |
| 319 | if (stream->play_buf_count >= nsamples_req) { |
| 320 | pjmedia_copy_samples((pj_int16_t*)output, stream->play_buf, |
| 321 | nsamples_req); |
| 322 | stream->play_buf_count -= nsamples_req; |
| 323 | pjmedia_move_samples(stream->play_buf, |
| 324 | stream->play_buf + nsamples_req, |
| 325 | stream->play_buf_count); |
| 326 | nsamples_req = 0; |
| 327 | |
| 328 | return paContinue; |
| 329 | } |
| 330 | |
| 331 | /* samples buffered < requested by sound device */ |
| 332 | pjmedia_copy_samples((pj_int16_t*)output, stream->play_buf, |
| 333 | stream->play_buf_count); |
| 334 | nsamples_req -= stream->play_buf_count; |
| 335 | output = (pj_int16_t*)output + stream->play_buf_count; |
| 336 | stream->play_buf_count = 0; |
| 337 | } |
| 338 | |
| 339 | /* Fill output buffer as requested */ |
| 340 | while (nsamples_req && status == 0) { |
| 341 | if (nsamples_req >= stream->samples_per_frame) { |
| 342 | pjmedia_frame frame; |
| 343 | |
| 344 | frame.type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 345 | frame.buf = output; |
| 346 | frame.size = stream->samples_per_frame * stream->bytes_per_sample; |
| 347 | frame.timestamp.u64 = stream->play_timestamp.u64; |
| 348 | frame.bit_info = 0; |
| 349 | |
| 350 | status = (*stream->play_cb)(stream->user_data, &frame); |
| 351 | if (status != PJ_SUCCESS) |
| 352 | goto on_break; |
| 353 | |
| 354 | if (frame.type != PJMEDIA_FRAME_TYPE_AUDIO) |
| 355 | pj_bzero(frame.buf, frame.size); |
| 356 | |
| 357 | nsamples_req -= stream->samples_per_frame; |
| 358 | output = (pj_int16_t*)output + stream->samples_per_frame; |
| 359 | } else { |
| 360 | pjmedia_frame frame; |
| 361 | |
| 362 | frame.type = PJMEDIA_FRAME_TYPE_AUDIO; |
| 363 | frame.buf = stream->play_buf; |
| 364 | frame.size = stream->samples_per_frame * stream->bytes_per_sample; |
| 365 | frame.timestamp.u64 = stream->play_timestamp.u64; |
| 366 | frame.bit_info = 0; |
| 367 | |
| 368 | status = (*stream->play_cb)(stream->user_data, &frame); |
| 369 | if (status != PJ_SUCCESS) |
| 370 | goto on_break; |
| 371 | |
| 372 | if (frame.type != PJMEDIA_FRAME_TYPE_AUDIO) |
| 373 | pj_bzero(frame.buf, frame.size); |
| 374 | |
| 375 | pjmedia_copy_samples((pj_int16_t*)output, stream->play_buf, |
| 376 | nsamples_req); |
| 377 | stream->play_buf_count = stream->samples_per_frame - nsamples_req; |
| 378 | pjmedia_move_samples(stream->play_buf, |
| 379 | stream->play_buf+nsamples_req, |
| 380 | stream->play_buf_count); |
| 381 | nsamples_req = 0; |
| 382 | } |
| 383 | |
| 384 | stream->play_timestamp.u64 += stream->samples_per_frame / |
| 385 | stream->channel_count; |
| 386 | } |
| 387 | |
| 388 | if (status==0) |
| 389 | return paContinue; |
| 390 | |
| 391 | on_break: |
| 392 | stream->play_thread_exited = 1; |
| 393 | return paAbort; |
| 394 | } |
| 395 | |
| 396 | |
| 397 | static int PaRecorderPlayerCallback( const void *input, |
| 398 | void *output, |
| 399 | unsigned long frameCount, |
| 400 | const PaStreamCallbackTimeInfo* timeInfo, |
| 401 | PaStreamCallbackFlags statusFlags, |
| 402 | void *userData ) |
| 403 | { |
| 404 | int rc; |
| 405 | |
| 406 | rc = PaRecorderCallback(input, output, frameCount, timeInfo, |
| 407 | statusFlags, userData); |
| 408 | if (rc != paContinue) |
| 409 | return rc; |
| 410 | |
| 411 | rc = PaPlayerCallback(input, output, frameCount, timeInfo, |
| 412 | statusFlags, userData); |
| 413 | return rc; |
| 414 | } |
| 415 | |
| 416 | #ifdef USE_PA_DEBUG_PRINT |
| 417 | /* Logging callback from PA */ |
| 418 | static void pa_log_cb(const char *log) |
| 419 | { |
| 420 | PJ_LOG(5,(THIS_FILE, "PA message: %s", log)); |
| 421 | } |
| 422 | |
| 423 | /* We should include pa_debugprint.h for this, but the header |
| 424 | * is not available publicly. :( |
| 425 | */ |
| 426 | typedef void (*PaUtilLogCallback ) (const char *log); |
| 427 | void PaUtil_SetDebugPrintFunction(PaUtilLogCallback cb); |
| 428 | #endif |
| 429 | |
| 430 | |
| 431 | /* |
| 432 | * Init PortAudio audio driver. |
| 433 | */ |
| 434 | pjmedia_aud_dev_factory* pjmedia_pa_factory(pj_pool_factory *pf) |
| 435 | { |
| 436 | struct pa_aud_factory *f; |
| 437 | pj_pool_t *pool; |
| 438 | |
| 439 | pool = pj_pool_create(pf, "portaudio", 64, 64, NULL); |
| 440 | f = PJ_POOL_ZALLOC_T(pool, struct pa_aud_factory); |
| 441 | f->pf = pf; |
| 442 | f->pool = pool; |
| 443 | f->base.op = &pa_op; |
| 444 | |
| 445 | return &f->base; |
| 446 | } |
| 447 | |
| 448 | |
| 449 | /* API: Init factory */ |
| 450 | static pj_status_t pa_init(pjmedia_aud_dev_factory *f) |
| 451 | { |
| 452 | int err; |
| 453 | |
| 454 | PJ_UNUSED_ARG(f); |
| 455 | |
| 456 | #ifdef USE_PA_DEBUG_PRINT |
| 457 | PaUtil_SetDebugPrintFunction(&pa_log_cb); |
| 458 | #endif |
| 459 | |
| 460 | err = Pa_Initialize(); |
| 461 | |
| 462 | PJ_LOG(4,(THIS_FILE, |
| 463 | "PortAudio sound library initialized, status=%d", err)); |
| 464 | PJ_LOG(4,(THIS_FILE, "PortAudio host api count=%d", |
| 465 | Pa_GetHostApiCount())); |
| 466 | PJ_LOG(4,(THIS_FILE, "Sound device count=%d", |
| 467 | pa_get_dev_count(f))); |
| 468 | |
| 469 | return err ? PJMEDIA_AUDIODEV_ERRNO_FROM_PORTAUDIO(err) : PJ_SUCCESS; |
| 470 | } |
| 471 | |
| 472 | |
| 473 | /* API: Destroy factory */ |
| 474 | static pj_status_t pa_destroy(pjmedia_aud_dev_factory *f) |
| 475 | { |
| 476 | struct pa_aud_factory *pa = (struct pa_aud_factory*)f; |
| 477 | pj_pool_t *pool; |
| 478 | int err; |
| 479 | |
| 480 | PJ_LOG(4,(THIS_FILE, "PortAudio sound library shutting down..")); |
| 481 | |
| 482 | err = Pa_Terminate(); |
| 483 | |
| 484 | pool = pa->pool; |
| 485 | pa->pool = NULL; |
| 486 | pj_pool_release(pool); |
| 487 | |
| 488 | return err ? PJMEDIA_AUDIODEV_ERRNO_FROM_PORTAUDIO(err) : PJ_SUCCESS; |
| 489 | } |
| 490 | |
| 491 | |
| 492 | /* API: Refresh the device list. */ |
| 493 | static pj_status_t pa_refresh(pjmedia_aud_dev_factory *f) |
| 494 | { |
| 495 | PJ_UNUSED_ARG(f); |
| 496 | return PJ_ENOTSUP; |
| 497 | } |
| 498 | |
| 499 | |
| 500 | /* API: Get device count. */ |
| 501 | static unsigned pa_get_dev_count(pjmedia_aud_dev_factory *f) |
| 502 | { |
| 503 | int count = Pa_GetDeviceCount(); |
| 504 | PJ_UNUSED_ARG(f); |
| 505 | return count < 0 ? 0 : count; |
| 506 | } |
| 507 | |
| 508 | |
| 509 | /* API: Get device info. */ |
| 510 | static pj_status_t pa_get_dev_info(pjmedia_aud_dev_factory *f, |
| 511 | unsigned index, |
| 512 | pjmedia_aud_dev_info *info) |
| 513 | { |
| 514 | const PaDeviceInfo *pa_info; |
| 515 | |
| 516 | PJ_UNUSED_ARG(f); |
| 517 | |
| 518 | pa_info = Pa_GetDeviceInfo(index); |
| 519 | if (!pa_info) |
| 520 | return PJMEDIA_EAUD_INVDEV; |
| 521 | |
| 522 | pj_bzero(info, sizeof(*info)); |
| 523 | strncpy(info->name, pa_info->name, sizeof(info->name)); |
| 524 | info->name[sizeof(info->name)-1] = '\0'; |
| 525 | info->input_count = pa_info->maxInputChannels; |
| 526 | info->output_count = pa_info->maxOutputChannels; |
| 527 | info->default_samples_per_sec = (unsigned)pa_info->defaultSampleRate; |
| 528 | strncpy(info->driver, DRIVER_NAME, sizeof(info->driver)); |
| 529 | info->driver[sizeof(info->driver)-1] = '\0'; |
| 530 | info->caps = PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY | |
| 531 | PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY; |
| 532 | |
| 533 | return PJ_SUCCESS; |
| 534 | } |
| 535 | |
| 536 | |
| 537 | /* API: fill in with default parameter. */ |
| 538 | static pj_status_t pa_default_param(pjmedia_aud_dev_factory *f, |
| 539 | unsigned index, |
| 540 | pjmedia_aud_param *param) |
| 541 | { |
| 542 | pjmedia_aud_dev_info adi; |
| 543 | pj_status_t status; |
| 544 | |
| 545 | PJ_UNUSED_ARG(f); |
| 546 | |
| 547 | status = pa_get_dev_info(f, index, &adi); |
| 548 | if (status != PJ_SUCCESS) |
| 549 | return status; |
| 550 | |
| 551 | pj_bzero(param, sizeof(*param)); |
| 552 | if (adi.input_count && adi.output_count) { |
| 553 | param->dir = PJMEDIA_DIR_CAPTURE_PLAYBACK; |
| 554 | param->rec_id = index; |
| 555 | param->play_id = index; |
| 556 | } else if (adi.input_count) { |
| 557 | param->dir = PJMEDIA_DIR_CAPTURE; |
| 558 | param->rec_id = index; |
| 559 | param->play_id = PJMEDIA_AUD_INVALID_DEV; |
| 560 | } else if (adi.output_count) { |
| 561 | param->dir = PJMEDIA_DIR_PLAYBACK; |
| 562 | param->play_id = index; |
| 563 | param->rec_id = PJMEDIA_AUD_INVALID_DEV; |
| 564 | } else { |
| 565 | return PJMEDIA_EAUD_INVDEV; |
| 566 | } |
| 567 | |
| 568 | param->clock_rate = adi.default_samples_per_sec; |
| 569 | param->channel_count = 1; |
| 570 | param->samples_per_frame = adi.default_samples_per_sec * 20 / 1000; |
| 571 | param->bits_per_sample = 16; |
| 572 | param->flags = adi.caps; |
| 573 | param->input_latency_ms = PJMEDIA_SND_DEFAULT_REC_LATENCY; |
| 574 | param->output_latency_ms = PJMEDIA_SND_DEFAULT_PLAY_LATENCY; |
| 575 | |
| 576 | return PJ_SUCCESS; |
| 577 | } |
| 578 | |
| 579 | |
| 580 | /* Internal: Get PortAudio default input device ID */ |
| 581 | static int pa_get_default_input_dev(int channel_count) |
| 582 | { |
| 583 | int i, count; |
| 584 | |
| 585 | /* Special for Windows - try to use the DirectSound implementation |
| 586 | * first since it provides better latency. |
| 587 | */ |
| 588 | #if PJMEDIA_PREFER_DIRECT_SOUND |
| 589 | if (Pa_HostApiTypeIdToHostApiIndex(paDirectSound) >= 0) { |
| 590 | const PaHostApiInfo *pHI; |
| 591 | int index = Pa_HostApiTypeIdToHostApiIndex(paDirectSound); |
| 592 | pHI = Pa_GetHostApiInfo(index); |
| 593 | if (pHI) { |
| 594 | const PaDeviceInfo *paDevInfo = NULL; |
| 595 | paDevInfo = Pa_GetDeviceInfo(pHI->defaultInputDevice); |
| 596 | if (paDevInfo && paDevInfo->maxInputChannels >= channel_count) |
| 597 | return pHI->defaultInputDevice; |
| 598 | } |
| 599 | } |
| 600 | #endif |
| 601 | |
| 602 | /* Enumerate the host api's for the default devices, and return |
| 603 | * the device with suitable channels. |
| 604 | */ |
| 605 | count = Pa_GetHostApiCount(); |
| 606 | for (i=0; i < count; ++i) { |
| 607 | const PaHostApiInfo *pHAInfo; |
| 608 | |
| 609 | pHAInfo = Pa_GetHostApiInfo(i); |
| 610 | if (!pHAInfo) |
| 611 | continue; |
| 612 | |
| 613 | if (pHAInfo->defaultInputDevice >= 0) { |
| 614 | const PaDeviceInfo *paDevInfo; |
| 615 | |
| 616 | paDevInfo = Pa_GetDeviceInfo(pHAInfo->defaultInputDevice); |
| 617 | |
| 618 | if (paDevInfo->maxInputChannels >= channel_count) |
| 619 | return pHAInfo->defaultInputDevice; |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | /* If still no device is found, enumerate all devices */ |
| 624 | count = Pa_GetDeviceCount(); |
| 625 | for (i=0; i<count; ++i) { |
| 626 | const PaDeviceInfo *paDevInfo; |
| 627 | |
| 628 | paDevInfo = Pa_GetDeviceInfo(i); |
| 629 | if (paDevInfo->maxInputChannels >= channel_count) |
| 630 | return i; |
| 631 | } |
| 632 | |
| 633 | return -1; |
| 634 | } |
| 635 | |
| 636 | /* Internal: Get PortAudio default output device ID */ |
| 637 | static int pa_get_default_output_dev(int channel_count) |
| 638 | { |
| 639 | int i, count; |
| 640 | |
| 641 | /* Special for Windows - try to use the DirectSound implementation |
| 642 | * first since it provides better latency. |
| 643 | */ |
| 644 | #if PJMEDIA_PREFER_DIRECT_SOUND |
| 645 | if (Pa_HostApiTypeIdToHostApiIndex(paDirectSound) >= 0) { |
| 646 | const PaHostApiInfo *pHI; |
| 647 | int index = Pa_HostApiTypeIdToHostApiIndex(paDirectSound); |
| 648 | pHI = Pa_GetHostApiInfo(index); |
| 649 | if (pHI) { |
| 650 | const PaDeviceInfo *paDevInfo = NULL; |
| 651 | paDevInfo = Pa_GetDeviceInfo(pHI->defaultOutputDevice); |
| 652 | if (paDevInfo && paDevInfo->maxOutputChannels >= channel_count) |
| 653 | return pHI->defaultOutputDevice; |
| 654 | } |
| 655 | } |
| 656 | #endif |
| 657 | |
| 658 | /* Enumerate the host api's for the default devices, and return |
| 659 | * the device with suitable channels. |
| 660 | */ |
| 661 | count = Pa_GetHostApiCount(); |
| 662 | for (i=0; i < count; ++i) { |
| 663 | const PaHostApiInfo *pHAInfo; |
| 664 | |
| 665 | pHAInfo = Pa_GetHostApiInfo(i); |
| 666 | if (!pHAInfo) |
| 667 | continue; |
| 668 | |
| 669 | if (pHAInfo->defaultOutputDevice >= 0) { |
| 670 | const PaDeviceInfo *paDevInfo; |
| 671 | |
| 672 | paDevInfo = Pa_GetDeviceInfo(pHAInfo->defaultOutputDevice); |
| 673 | |
| 674 | if (paDevInfo->maxOutputChannels >= channel_count) |
| 675 | return pHAInfo->defaultOutputDevice; |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | /* If still no device is found, enumerate all devices */ |
| 680 | count = Pa_GetDeviceCount(); |
| 681 | for (i=0; i<count; ++i) { |
| 682 | const PaDeviceInfo *paDevInfo; |
| 683 | |
| 684 | paDevInfo = Pa_GetDeviceInfo(i); |
| 685 | if (paDevInfo->maxOutputChannels >= channel_count) |
| 686 | return i; |
| 687 | } |
| 688 | |
| 689 | return -1; |
| 690 | } |
| 691 | |
| 692 | |
| 693 | /* Internal: create capture/recorder stream */ |
| 694 | static pj_status_t create_rec_stream( struct pa_aud_factory *pa, |
| 695 | const pjmedia_aud_param *param, |
| 696 | pjmedia_aud_rec_cb rec_cb, |
| 697 | void *user_data, |
| 698 | pjmedia_aud_stream **p_snd_strm) |
| 699 | { |
| 700 | pj_pool_t *pool; |
| 701 | pjmedia_aud_dev_index rec_id; |
| 702 | struct pa_aud_stream *stream; |
| 703 | PaStreamParameters inputParam; |
| 704 | int sampleFormat; |
| 705 | const PaDeviceInfo *paDevInfo = NULL; |
| 706 | const PaHostApiInfo *paHostApiInfo = NULL; |
| 707 | unsigned paFrames, paRate, paLatency; |
| 708 | const PaStreamInfo *paSI; |
| 709 | PaError err; |
| 710 | |
| 711 | PJ_ASSERT_RETURN(rec_cb && p_snd_strm, PJ_EINVAL); |
| 712 | |
| 713 | rec_id = param->rec_id; |
| 714 | if (rec_id < 0) { |
| 715 | rec_id = pa_get_default_input_dev(param->channel_count); |
| 716 | if (rec_id < 0) { |
| 717 | /* No such device. */ |
| 718 | return PJMEDIA_EAUD_NODEFDEV; |
| 719 | } |
| 720 | } |
| 721 | |
| 722 | paDevInfo = Pa_GetDeviceInfo(rec_id); |
| 723 | if (!paDevInfo) { |
| 724 | /* Assumed it is "No such device" error. */ |
| 725 | return PJMEDIA_EAUD_INVDEV; |
| 726 | } |
| 727 | |
| 728 | if (param->bits_per_sample == 8) |
| 729 | sampleFormat = paUInt8; |
| 730 | else if (param->bits_per_sample == 16) |
| 731 | sampleFormat = paInt16; |
| 732 | else if (param->bits_per_sample == 32) |
| 733 | sampleFormat = paInt32; |
| 734 | else |
| 735 | return PJMEDIA_EAUD_SAMPFORMAT; |
| 736 | |
| 737 | pool = pj_pool_create(pa->pf, "recstrm", 1024, 1024, NULL); |
| 738 | if (!pool) |
| 739 | return PJ_ENOMEM; |
| 740 | |
| 741 | stream = PJ_POOL_ZALLOC_T(pool, struct pa_aud_stream); |
| 742 | stream->pool = pool; |
| 743 | pj_strdup2_with_null(pool, &stream->name, paDevInfo->name); |
| 744 | stream->dir = PJMEDIA_DIR_CAPTURE; |
| 745 | stream->rec_id = rec_id; |
| 746 | stream->play_id = -1; |
| 747 | stream->user_data = user_data; |
| 748 | stream->samples_per_sec = param->clock_rate; |
| 749 | stream->samples_per_frame = param->samples_per_frame; |
| 750 | stream->bytes_per_sample = param->bits_per_sample / 8; |
| 751 | stream->channel_count = param->channel_count; |
| 752 | stream->rec_cb = rec_cb; |
| 753 | |
| 754 | stream->rec_buf = (pj_int16_t*)pj_pool_alloc(pool, |
| 755 | stream->samples_per_frame * stream->bytes_per_sample); |
| 756 | stream->rec_buf_count = 0; |
| 757 | |
| 758 | pj_bzero(&inputParam, sizeof(inputParam)); |
| 759 | inputParam.device = rec_id; |
| 760 | inputParam.channelCount = param->channel_count; |
| 761 | inputParam.hostApiSpecificStreamInfo = NULL; |
| 762 | inputParam.sampleFormat = sampleFormat; |
| 763 | if (param->flags & PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY) |
| 764 | inputParam.suggestedLatency = param->input_latency_ms / 1000.0; |
| 765 | else |
| 766 | inputParam.suggestedLatency = PJMEDIA_SND_DEFAULT_REC_LATENCY / 1000.0; |
| 767 | |
| 768 | paHostApiInfo = Pa_GetHostApiInfo(paDevInfo->hostApi); |
| 769 | |
| 770 | /* Frames in PortAudio is number of samples in a single channel */ |
| 771 | paFrames = param->samples_per_frame / param->channel_count; |
| 772 | |
| 773 | err = Pa_OpenStream( &stream->rec_strm, &inputParam, NULL, |
| 774 | param->clock_rate, paFrames, |
| 775 | paClipOff, &PaRecorderCallback, stream ); |
| 776 | if (err != paNoError) { |
| 777 | pj_pool_release(pool); |
| 778 | return PJMEDIA_AUDIODEV_ERRNO_FROM_PORTAUDIO(err); |
| 779 | } |
| 780 | |
| 781 | paSI = Pa_GetStreamInfo(stream->rec_strm); |
| 782 | paRate = (unsigned)paSI->sampleRate; |
| 783 | paLatency = (unsigned)(paSI->inputLatency * 1000); |
| 784 | |
| 785 | PJ_LOG(5,(THIS_FILE, "Opened device %s (%s) for recording, sample " |
| 786 | "rate=%d, ch=%d, " |
| 787 | "bits=%d, %d samples per frame, latency=%d ms", |
| 788 | paDevInfo->name, paHostApiInfo->name, |
| 789 | paRate, param->channel_count, |
| 790 | param->bits_per_sample, param->samples_per_frame, |
| 791 | paLatency)); |
| 792 | |
| 793 | *p_snd_strm = &stream->base; |
| 794 | return PJ_SUCCESS; |
| 795 | } |
| 796 | |
| 797 | |
| 798 | /* Internal: create playback stream */ |
| 799 | static pj_status_t create_play_stream(struct pa_aud_factory *pa, |
| 800 | const pjmedia_aud_param *param, |
| 801 | pjmedia_aud_play_cb play_cb, |
| 802 | void *user_data, |
| 803 | pjmedia_aud_stream **p_snd_strm) |
| 804 | { |
| 805 | pj_pool_t *pool; |
| 806 | pjmedia_aud_dev_index play_id; |
| 807 | struct pa_aud_stream *stream; |
| 808 | PaStreamParameters outputParam; |
| 809 | int sampleFormat; |
| 810 | const PaDeviceInfo *paDevInfo = NULL; |
| 811 | const PaHostApiInfo *paHostApiInfo = NULL; |
| 812 | const PaStreamInfo *paSI; |
| 813 | unsigned paFrames, paRate, paLatency; |
| 814 | PaError err; |
| 815 | |
| 816 | PJ_ASSERT_RETURN(play_cb && p_snd_strm, PJ_EINVAL); |
| 817 | |
| 818 | play_id = param->play_id; |
| 819 | if (play_id < 0) { |
| 820 | play_id = pa_get_default_output_dev(param->channel_count); |
| 821 | if (play_id < 0) { |
| 822 | /* No such device. */ |
| 823 | return PJMEDIA_EAUD_NODEFDEV; |
| 824 | } |
| 825 | } |
| 826 | |
| 827 | paDevInfo = Pa_GetDeviceInfo(play_id); |
| 828 | if (!paDevInfo) { |
| 829 | /* Assumed it is "No such device" error. */ |
| 830 | return PJMEDIA_EAUD_INVDEV; |
| 831 | } |
| 832 | |
| 833 | if (param->bits_per_sample == 8) |
| 834 | sampleFormat = paUInt8; |
| 835 | else if (param->bits_per_sample == 16) |
| 836 | sampleFormat = paInt16; |
| 837 | else if (param->bits_per_sample == 32) |
| 838 | sampleFormat = paInt32; |
| 839 | else |
| 840 | return PJMEDIA_EAUD_SAMPFORMAT; |
| 841 | |
| 842 | pool = pj_pool_create(pa->pf, "playstrm", 1024, 1024, NULL); |
| 843 | if (!pool) |
| 844 | return PJ_ENOMEM; |
| 845 | |
| 846 | stream = PJ_POOL_ZALLOC_T(pool, struct pa_aud_stream); |
| 847 | stream->pool = pool; |
| 848 | pj_strdup2_with_null(pool, &stream->name, paDevInfo->name); |
| 849 | stream->dir = PJMEDIA_DIR_PLAYBACK; |
| 850 | stream->play_id = play_id; |
| 851 | stream->rec_id = -1; |
| 852 | stream->user_data = user_data; |
| 853 | stream->samples_per_sec = param->clock_rate; |
| 854 | stream->samples_per_frame = param->samples_per_frame; |
| 855 | stream->bytes_per_sample = param->bits_per_sample / 8; |
| 856 | stream->channel_count = param->channel_count; |
| 857 | stream->play_cb = play_cb; |
| 858 | |
| 859 | stream->play_buf = (pj_int16_t*)pj_pool_alloc(pool, |
| 860 | stream->samples_per_frame * |
| 861 | stream->bytes_per_sample); |
| 862 | stream->play_buf_count = 0; |
| 863 | |
| 864 | pj_bzero(&outputParam, sizeof(outputParam)); |
| 865 | outputParam.device = play_id; |
| 866 | outputParam.channelCount = param->channel_count; |
| 867 | outputParam.hostApiSpecificStreamInfo = NULL; |
| 868 | outputParam.sampleFormat = sampleFormat; |
| 869 | if (param->flags & PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY) |
| 870 | outputParam.suggestedLatency=param->output_latency_ms / 1000.0; |
| 871 | else |
| 872 | outputParam.suggestedLatency=PJMEDIA_SND_DEFAULT_PLAY_LATENCY/1000.0; |
| 873 | |
| 874 | paHostApiInfo = Pa_GetHostApiInfo(paDevInfo->hostApi); |
| 875 | |
| 876 | /* Frames in PortAudio is number of samples in a single channel */ |
| 877 | paFrames = param->samples_per_frame / param->channel_count; |
| 878 | |
| 879 | err = Pa_OpenStream( &stream->play_strm, NULL, &outputParam, |
| 880 | param->clock_rate, paFrames, |
| 881 | paClipOff, &PaPlayerCallback, stream ); |
| 882 | if (err != paNoError) { |
| 883 | pj_pool_release(pool); |
| 884 | return PJMEDIA_AUDIODEV_ERRNO_FROM_PORTAUDIO(err); |
| 885 | } |
| 886 | |
| 887 | paSI = Pa_GetStreamInfo(stream->play_strm); |
| 888 | paRate = (unsigned)(paSI->sampleRate); |
| 889 | paLatency = (unsigned)(paSI->outputLatency * 1000); |
| 890 | |
| 891 | PJ_LOG(5,(THIS_FILE, "Opened device %d: %s(%s) for playing, sample rate=%d" |
| 892 | ", ch=%d, " |
| 893 | "bits=%d, %d samples per frame, latency=%d ms", |
| 894 | play_id, paDevInfo->name, paHostApiInfo->name, |
| 895 | paRate, param->channel_count, |
| 896 | param->bits_per_sample, param->samples_per_frame, |
| 897 | paLatency)); |
| 898 | |
| 899 | *p_snd_strm = &stream->base; |
| 900 | |
| 901 | return PJ_SUCCESS; |
| 902 | } |
| 903 | |
| 904 | |
| 905 | /* Internal: Create both player and recorder stream */ |
| 906 | static pj_status_t create_bidir_stream(struct pa_aud_factory *pa, |
| 907 | const pjmedia_aud_param *param, |
| 908 | pjmedia_aud_rec_cb rec_cb, |
| 909 | pjmedia_aud_play_cb play_cb, |
| 910 | void *user_data, |
| 911 | pjmedia_aud_stream **p_snd_strm) |
| 912 | { |
| 913 | pj_pool_t *pool; |
| 914 | pjmedia_aud_dev_index rec_id, play_id; |
| 915 | struct pa_aud_stream *stream; |
| 916 | PaStream *paStream = NULL; |
| 917 | PaStreamParameters inputParam; |
| 918 | PaStreamParameters outputParam; |
| 919 | int sampleFormat; |
| 920 | const PaDeviceInfo *paRecDevInfo = NULL; |
| 921 | const PaDeviceInfo *paPlayDevInfo = NULL; |
| 922 | const PaHostApiInfo *paRecHostApiInfo = NULL; |
| 923 | const PaHostApiInfo *paPlayHostApiInfo = NULL; |
| 924 | const PaStreamInfo *paSI; |
| 925 | unsigned paFrames, paRate, paInputLatency, paOutputLatency; |
| 926 | PaError err; |
| 927 | |
| 928 | PJ_ASSERT_RETURN(play_cb && rec_cb && p_snd_strm, PJ_EINVAL); |
| 929 | |
| 930 | rec_id = param->rec_id; |
| 931 | if (rec_id < 0) { |
| 932 | rec_id = pa_get_default_input_dev(param->channel_count); |
| 933 | if (rec_id < 0) { |
| 934 | /* No such device. */ |
| 935 | return PJMEDIA_EAUD_NODEFDEV; |
| 936 | } |
| 937 | } |
| 938 | |
| 939 | paRecDevInfo = Pa_GetDeviceInfo(rec_id); |
| 940 | if (!paRecDevInfo) { |
| 941 | /* Assumed it is "No such device" error. */ |
| 942 | return PJMEDIA_EAUD_INVDEV; |
| 943 | } |
| 944 | |
| 945 | play_id = param->play_id; |
| 946 | if (play_id < 0) { |
| 947 | play_id = pa_get_default_output_dev(param->channel_count); |
| 948 | if (play_id < 0) { |
| 949 | /* No such device. */ |
| 950 | return PJMEDIA_EAUD_NODEFDEV; |
| 951 | } |
| 952 | } |
| 953 | |
| 954 | paPlayDevInfo = Pa_GetDeviceInfo(play_id); |
| 955 | if (!paPlayDevInfo) { |
| 956 | /* Assumed it is "No such device" error. */ |
| 957 | return PJMEDIA_EAUD_INVDEV; |
| 958 | } |
| 959 | |
| 960 | |
| 961 | if (param->bits_per_sample == 8) |
| 962 | sampleFormat = paUInt8; |
| 963 | else if (param->bits_per_sample == 16) |
| 964 | sampleFormat = paInt16; |
| 965 | else if (param->bits_per_sample == 32) |
| 966 | sampleFormat = paInt32; |
| 967 | else |
| 968 | return PJMEDIA_EAUD_SAMPFORMAT; |
| 969 | |
| 970 | pool = pj_pool_create(pa->pf, "sndstream", 1024, 1024, NULL); |
| 971 | if (!pool) |
| 972 | return PJ_ENOMEM; |
| 973 | |
| 974 | stream = PJ_POOL_ZALLOC_T(pool, struct pa_aud_stream); |
| 975 | stream->pool = pool; |
| 976 | pj_strdup2_with_null(pool, &stream->name, paRecDevInfo->name); |
| 977 | stream->dir = PJMEDIA_DIR_CAPTURE_PLAYBACK; |
| 978 | stream->play_id = play_id; |
| 979 | stream->rec_id = rec_id; |
| 980 | stream->user_data = user_data; |
| 981 | stream->samples_per_sec = param->clock_rate; |
| 982 | stream->samples_per_frame = param->samples_per_frame; |
| 983 | stream->bytes_per_sample = param->bits_per_sample / 8; |
| 984 | stream->channel_count = param->channel_count; |
| 985 | stream->rec_cb = rec_cb; |
| 986 | stream->play_cb = play_cb; |
| 987 | |
| 988 | stream->rec_buf = (pj_int16_t*)pj_pool_alloc(pool, |
| 989 | stream->samples_per_frame * stream->bytes_per_sample); |
| 990 | stream->rec_buf_count = 0; |
| 991 | |
| 992 | stream->play_buf = (pj_int16_t*)pj_pool_alloc(pool, |
| 993 | stream->samples_per_frame * stream->bytes_per_sample); |
| 994 | stream->play_buf_count = 0; |
| 995 | |
| 996 | pj_bzero(&inputParam, sizeof(inputParam)); |
| 997 | inputParam.device = rec_id; |
| 998 | inputParam.channelCount = param->channel_count; |
| 999 | inputParam.hostApiSpecificStreamInfo = NULL; |
| 1000 | inputParam.sampleFormat = sampleFormat; |
| 1001 | if (param->flags & PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY) |
| 1002 | inputParam.suggestedLatency = param->input_latency_ms / 1000.0; |
| 1003 | else |
| 1004 | inputParam.suggestedLatency = PJMEDIA_SND_DEFAULT_REC_LATENCY / 1000.0; |
| 1005 | |
| 1006 | paRecHostApiInfo = Pa_GetHostApiInfo(paRecDevInfo->hostApi); |
| 1007 | |
| 1008 | pj_bzero(&outputParam, sizeof(outputParam)); |
| 1009 | outputParam.device = play_id; |
| 1010 | outputParam.channelCount = param->channel_count; |
| 1011 | outputParam.hostApiSpecificStreamInfo = NULL; |
| 1012 | outputParam.sampleFormat = sampleFormat; |
| 1013 | if (param->flags & PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY) |
| 1014 | outputParam.suggestedLatency=param->output_latency_ms / 1000.0; |
| 1015 | else |
| 1016 | outputParam.suggestedLatency=PJMEDIA_SND_DEFAULT_PLAY_LATENCY/1000.0; |
| 1017 | |
| 1018 | paPlayHostApiInfo = Pa_GetHostApiInfo(paPlayDevInfo->hostApi); |
| 1019 | |
| 1020 | /* Frames in PortAudio is number of samples in a single channel */ |
| 1021 | paFrames = param->samples_per_frame / param->channel_count; |
| 1022 | |
| 1023 | /* If both input and output are on the same device, open a single stream |
| 1024 | * for both input and output. |
| 1025 | */ |
| 1026 | if (rec_id == play_id) { |
| 1027 | err = Pa_OpenStream( &paStream, &inputParam, &outputParam, |
| 1028 | param->clock_rate, paFrames, |
| 1029 | paClipOff, &PaRecorderPlayerCallback, stream ); |
| 1030 | if (err == paNoError) { |
| 1031 | /* Set play stream and record stream to the same stream */ |
| 1032 | stream->play_strm = stream->rec_strm = paStream; |
| 1033 | } |
| 1034 | } else { |
| 1035 | err = -1; |
| 1036 | } |
| 1037 | |
| 1038 | /* .. otherwise if input and output are on the same device, OR if we're |
| 1039 | * unable to open a bidirectional stream, then open two separate |
| 1040 | * input and output stream. |
| 1041 | */ |
| 1042 | if (paStream == NULL) { |
| 1043 | /* Open input stream */ |
| 1044 | err = Pa_OpenStream( &stream->rec_strm, &inputParam, NULL, |
| 1045 | param->clock_rate, paFrames, |
| 1046 | paClipOff, &PaRecorderCallback, stream ); |
| 1047 | if (err == paNoError) { |
| 1048 | /* Open output stream */ |
| 1049 | err = Pa_OpenStream( &stream->play_strm, NULL, &outputParam, |
| 1050 | param->clock_rate, paFrames, |
| 1051 | paClipOff, &PaPlayerCallback, stream ); |
| 1052 | if (err != paNoError) |
| 1053 | Pa_CloseStream(stream->rec_strm); |
| 1054 | } |
| 1055 | } |
| 1056 | |
| 1057 | if (err != paNoError) { |
| 1058 | pj_pool_release(pool); |
| 1059 | return PJMEDIA_AUDIODEV_ERRNO_FROM_PORTAUDIO(err); |
| 1060 | } |
| 1061 | |
| 1062 | paSI = Pa_GetStreamInfo(stream->rec_strm); |
| 1063 | paRate = (unsigned)(paSI->sampleRate); |
| 1064 | paInputLatency = (unsigned)(paSI->inputLatency * 1000); |
| 1065 | paSI = Pa_GetStreamInfo(stream->play_strm); |
| 1066 | paOutputLatency = (unsigned)(paSI->outputLatency * 1000); |
| 1067 | |
| 1068 | PJ_LOG(5,(THIS_FILE, "Opened device %s(%s)/%s(%s) for recording and " |
| 1069 | "playback, sample rate=%d, ch=%d, " |
| 1070 | "bits=%d, %d samples per frame, input latency=%d ms, " |
| 1071 | "output latency=%d ms", |
| 1072 | paRecDevInfo->name, paRecHostApiInfo->name, |
| 1073 | paPlayDevInfo->name, paPlayHostApiInfo->name, |
| 1074 | paRate, param->channel_count, |
| 1075 | param->bits_per_sample, param->samples_per_frame, |
| 1076 | paInputLatency, paOutputLatency)); |
| 1077 | |
| 1078 | *p_snd_strm = &stream->base; |
| 1079 | |
| 1080 | return PJ_SUCCESS; |
| 1081 | } |
| 1082 | |
| 1083 | |
| 1084 | /* API: create stream */ |
| 1085 | static pj_status_t pa_create_stream(pjmedia_aud_dev_factory *f, |
| 1086 | const pjmedia_aud_param *param, |
| 1087 | pjmedia_aud_rec_cb rec_cb, |
| 1088 | pjmedia_aud_play_cb play_cb, |
| 1089 | void *user_data, |
| 1090 | pjmedia_aud_stream **p_aud_strm) |
| 1091 | { |
| 1092 | struct pa_aud_factory *pa = (struct pa_aud_factory*)f; |
| 1093 | pj_status_t status; |
| 1094 | |
| 1095 | if (param->dir == PJMEDIA_DIR_CAPTURE) { |
| 1096 | status = create_rec_stream(pa, param, rec_cb, user_data, p_aud_strm); |
| 1097 | } else if (param->dir == PJMEDIA_DIR_PLAYBACK) { |
| 1098 | status = create_play_stream(pa, param, play_cb, user_data, p_aud_strm); |
| 1099 | } else if (param->dir == PJMEDIA_DIR_CAPTURE_PLAYBACK) { |
| 1100 | status = create_bidir_stream(pa, param, rec_cb, play_cb, user_data, |
| 1101 | p_aud_strm); |
| 1102 | } else { |
| 1103 | return PJ_EINVAL; |
| 1104 | } |
| 1105 | |
| 1106 | if (status != PJ_SUCCESS) |
| 1107 | return status; |
| 1108 | |
| 1109 | (*p_aud_strm)->op = &pa_strm_op; |
| 1110 | |
| 1111 | return PJ_SUCCESS; |
| 1112 | } |
| 1113 | |
| 1114 | |
| 1115 | /* API: Get stream parameters */ |
| 1116 | static pj_status_t strm_get_param(pjmedia_aud_stream *s, |
| 1117 | pjmedia_aud_param *pi) |
| 1118 | { |
| 1119 | struct pa_aud_stream *strm = (struct pa_aud_stream*)s; |
| 1120 | const PaStreamInfo *paPlaySI = NULL, *paRecSI = NULL; |
| 1121 | |
| 1122 | PJ_ASSERT_RETURN(strm && pi, PJ_EINVAL); |
| 1123 | PJ_ASSERT_RETURN(strm->play_strm || strm->rec_strm, PJ_EINVALIDOP); |
| 1124 | |
| 1125 | if (strm->play_strm) { |
| 1126 | paPlaySI = Pa_GetStreamInfo(strm->play_strm); |
| 1127 | } |
| 1128 | if (strm->rec_strm) { |
| 1129 | paRecSI = Pa_GetStreamInfo(strm->rec_strm); |
| 1130 | } |
| 1131 | |
| 1132 | pj_bzero(pi, sizeof(*pi)); |
| 1133 | pi->dir = strm->dir; |
| 1134 | pi->play_id = strm->play_id; |
| 1135 | pi->rec_id = strm->rec_id; |
| 1136 | pi->clock_rate = (unsigned)(paPlaySI ? paPlaySI->sampleRate : |
| 1137 | paRecSI->sampleRate); |
| 1138 | pi->channel_count = strm->channel_count; |
| 1139 | pi->samples_per_frame = strm->samples_per_frame; |
| 1140 | pi->bits_per_sample = strm->bytes_per_sample * 8; |
| 1141 | if (paRecSI) { |
| 1142 | pi->flags |= PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY; |
| 1143 | pi->input_latency_ms = (unsigned)(paRecSI ? paRecSI->inputLatency * |
| 1144 | 1000 : 0); |
| 1145 | } |
| 1146 | if (paPlaySI) { |
| 1147 | pi->flags |= PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY; |
| 1148 | pi->output_latency_ms = (unsigned)(paPlaySI? paPlaySI->outputLatency * |
| 1149 | 1000 : 0); |
| 1150 | } |
| 1151 | |
| 1152 | return PJ_SUCCESS; |
| 1153 | } |
| 1154 | |
| 1155 | |
| 1156 | /* API: get capability */ |
| 1157 | static pj_status_t strm_get_cap(pjmedia_aud_stream *s, |
| 1158 | pjmedia_aud_dev_cap cap, |
| 1159 | void *pval) |
| 1160 | { |
| 1161 | struct pa_aud_stream *strm = (struct pa_aud_stream*)s; |
| 1162 | |
| 1163 | PJ_ASSERT_RETURN(strm && pval, PJ_EINVAL); |
| 1164 | |
| 1165 | if (cap==PJMEDIA_AUD_DEV_CAP_INPUT_LATENCY && strm->rec_strm) { |
| 1166 | const PaStreamInfo *si = Pa_GetStreamInfo(strm->rec_strm); |
| 1167 | if (!si) |
| 1168 | return PJMEDIA_EAUD_SYSERR; |
| 1169 | |
| 1170 | *(unsigned*)pval = (unsigned)(si->inputLatency * 1000); |
| 1171 | return PJ_SUCCESS; |
| 1172 | } else if (cap==PJMEDIA_AUD_DEV_CAP_OUTPUT_LATENCY && strm->play_strm) { |
| 1173 | const PaStreamInfo *si = Pa_GetStreamInfo(strm->play_strm); |
| 1174 | if (!si) |
| 1175 | return PJMEDIA_EAUD_SYSERR; |
| 1176 | |
| 1177 | *(unsigned*)pval = (unsigned)(si->outputLatency * 1000); |
| 1178 | return PJ_SUCCESS; |
| 1179 | } else { |
| 1180 | return PJMEDIA_EAUD_INVCAP; |
| 1181 | } |
| 1182 | } |
| 1183 | |
| 1184 | |
| 1185 | /* API: set capability */ |
| 1186 | static pj_status_t strm_set_cap(pjmedia_aud_stream *strm, |
| 1187 | pjmedia_aud_dev_cap cap, |
| 1188 | const void *value) |
| 1189 | { |
| 1190 | PJ_UNUSED_ARG(strm); |
| 1191 | PJ_UNUSED_ARG(cap); |
| 1192 | PJ_UNUSED_ARG(value); |
| 1193 | |
| 1194 | /* Nothing is supported */ |
| 1195 | return PJMEDIA_EAUD_INVCAP; |
| 1196 | } |
| 1197 | |
| 1198 | |
| 1199 | /* API: start stream. */ |
| 1200 | static pj_status_t strm_start(pjmedia_aud_stream *s) |
| 1201 | { |
| 1202 | struct pa_aud_stream *stream = (struct pa_aud_stream*)s; |
| 1203 | int err = 0; |
| 1204 | |
| 1205 | PJ_LOG(5,(THIS_FILE, "Starting %s stream..", stream->name.ptr)); |
| 1206 | |
| 1207 | if (stream->play_strm) |
| 1208 | err = Pa_StartStream(stream->play_strm); |
| 1209 | |
| 1210 | if (err==0 && stream->rec_strm && stream->rec_strm != stream->play_strm) { |
| 1211 | err = Pa_StartStream(stream->rec_strm); |
| 1212 | if (err != 0) |
| 1213 | Pa_StopStream(stream->play_strm); |
| 1214 | } |
| 1215 | |
| 1216 | PJ_LOG(5,(THIS_FILE, "Done, status=%d", err)); |
| 1217 | |
| 1218 | return err ? PJMEDIA_AUDIODEV_ERRNO_FROM_PORTAUDIO(err) : PJ_SUCCESS; |
| 1219 | } |
| 1220 | |
| 1221 | |
| 1222 | /* API: stop stream. */ |
| 1223 | static pj_status_t strm_stop(pjmedia_aud_stream *s) |
| 1224 | { |
| 1225 | struct pa_aud_stream *stream = (struct pa_aud_stream*)s; |
| 1226 | int i, err = 0; |
| 1227 | |
| 1228 | stream->quit_flag = 1; |
| 1229 | for (i=0; !stream->rec_thread_exited && i<100; ++i) |
| 1230 | pj_thread_sleep(10); |
| 1231 | for (i=0; !stream->play_thread_exited && i<100; ++i) |
| 1232 | pj_thread_sleep(10); |
| 1233 | |
| 1234 | pj_thread_sleep(1); |
| 1235 | |
| 1236 | PJ_LOG(5,(THIS_FILE, "Stopping stream..")); |
| 1237 | |
| 1238 | if (stream->play_strm) |
| 1239 | err = Pa_StopStream(stream->play_strm); |
| 1240 | |
| 1241 | if (stream->rec_strm && stream->rec_strm != stream->play_strm) |
| 1242 | err = Pa_StopStream(stream->rec_strm); |
| 1243 | |
| 1244 | stream->play_thread_initialized = 0; |
| 1245 | stream->rec_thread_initialized = 0; |
| 1246 | |
| 1247 | PJ_LOG(5,(THIS_FILE, "Done, status=%d", err)); |
| 1248 | |
| 1249 | return err ? PJMEDIA_AUDIODEV_ERRNO_FROM_PORTAUDIO(err) : PJ_SUCCESS; |
| 1250 | } |
| 1251 | |
| 1252 | |
| 1253 | /* API: destroy stream. */ |
| 1254 | static pj_status_t strm_destroy(pjmedia_aud_stream *s) |
| 1255 | { |
| 1256 | struct pa_aud_stream *stream = (struct pa_aud_stream*)s; |
| 1257 | int i, err = 0; |
| 1258 | |
| 1259 | stream->quit_flag = 1; |
| 1260 | for (i=0; !stream->rec_thread_exited && i<100; ++i) { |
| 1261 | pj_thread_sleep(1); |
| 1262 | } |
| 1263 | for (i=0; !stream->play_thread_exited && i<100; ++i) { |
| 1264 | pj_thread_sleep(1); |
| 1265 | } |
| 1266 | |
| 1267 | PJ_LOG(5,(THIS_FILE, "Closing %.*s: %lu underflow, %lu overflow", |
| 1268 | (int)stream->name.slen, |
| 1269 | stream->name.ptr, |
| 1270 | stream->underflow, stream->overflow)); |
| 1271 | |
| 1272 | if (stream->play_strm) |
| 1273 | err = Pa_CloseStream(stream->play_strm); |
| 1274 | |
| 1275 | if (stream->rec_strm && stream->rec_strm != stream->play_strm) |
| 1276 | err = Pa_CloseStream(stream->rec_strm); |
| 1277 | |
| 1278 | pj_pool_release(stream->pool); |
| 1279 | |
| 1280 | return err ? PJMEDIA_AUDIODEV_ERRNO_FROM_PORTAUDIO(err) : PJ_SUCCESS; |
| 1281 | } |
| 1282 | |
| 1283 | #endif /* PJMEDIA_AUDIO_DEV_HAS_PORTAUDIO */ |
| 1284 | |