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Changeset 1827
- Timestamp:
- Feb 28, 2008 8:22:16 PM (17 years ago)
- Location:
- pjproject/trunk/pjmedia
- Files:
-
- 3 edited
-
include/pjmedia/types.h (modified) (3 diffs)
-
include/pjmedia/wsola.h (modified) (3 diffs)
-
src/pjmedia/wsola.c (modified) (12 diffs)
Legend:
- Unmodified
- Added
- Removed
-
pjproject/trunk/pjmedia/include/pjmedia/types.h
r1734 r1827 191 191 { 192 192 #if 1 193 pj_bzero(samples, count*sizeof(pj_int16_t));193 pj_bzero(samples, (count<<1)); 194 194 #elif 0 195 195 unsigned i; … … 213 213 { 214 214 #if 1 215 pj_memcpy(dst, src, count*sizeof(pj_int16_t));215 pj_memcpy(dst, src, (count<<1)); 216 216 #elif 0 217 217 unsigned i; … … 227 227 228 228 /** 229 * This is a general purpose function to copy samples from/to buffers with 230 * equal size. Since this function is needed by many parts of the library, 231 * by putting this functionality in one place, it enables some. 232 * clever people to optimize this function. 233 */ 234 PJ_INLINE(void) pjmedia_move_samples(pj_int16_t *dst, const pj_int16_t *src, 235 unsigned count) 236 { 237 #if 1 238 pj_memmove(dst, src, (count<<1)); 239 #elif 0 240 unsigned i; 241 for (i=0; i<count; ++i) dst[i] = src[i]; 242 #else 243 unsigned i; 244 count >>= 1; 245 for (i=0; i<count; ++i) 246 ((pj_int32_t*)dst)[i] = ((pj_int32_t*)src)[i]; 247 #endif 248 } 249 250 /** 229 251 * @} 230 252 */ -
pjproject/trunk/pjmedia/include/pjmedia/wsola.h
r1824 r1827 59 59 * Specify that the WSOLA will not be used for PLC. 60 60 */ 61 PJMEDIA_WSOLA_NO_PLC = 2 61 PJMEDIA_WSOLA_NO_PLC = 2, 62 63 /** 64 * Specify that the WSOLA will not be used to discard frames in 65 * non-contiguous buffer. 66 */ 67 PJMEDIA_WSOLA_NO_DISCARD = 4 62 68 }; 63 69 … … 130 136 /** 131 137 * Compress or compact the specified buffer by removing some audio samples 132 * from the buffer, without altering the pitch. 138 * from the buffer, without altering the pitch. For this function to work, 139 * total length of the buffer must be more than twice \a erase_cnt. 133 140 * 134 141 * @param wsola WSOLA session. 135 * @param buf Pointer to buffer. For this function to work, the buffer 136 * must contain more than twice \a erase_cnt number of 137 * samples. 138 * @param buf_cnt Number of samples in the buffer. 142 * @param buf1 Pointer to buffer. 143 * @param buf1_cnt Number of samples in the buffer. 144 * @param buf2 Pointer to second buffer, if the buffer is not 145 * contiguous. Otherwise this parameter must be NULL. 146 * @param buf2_cnt Number of samples in the second buffer, if the buffer 147 * is not contiguous. Otherwise this parameter should be 148 * zero. 139 149 * @param erase_cnt On input, specify the number of samples to be erased. 140 150 * This function may erase more or less than the requested … … 147 157 */ 148 158 PJ_DECL(pj_status_t) pjmedia_wsola_discard(pjmedia_wsola *wsola, 149 short buf[], 150 unsigned buf_cnt, 159 short buf1[], 160 unsigned buf1_cnt, 161 short buf2[], 162 unsigned buf2_cnt, 151 163 unsigned *erase_cnt); 152 164 -
pjproject/trunk/pjmedia/src/pjmedia/wsola.c
r1826 r1827 39 39 #define GEN_EXTRA_PTIME (0.0) 40 40 41 /* Number of frames in erase buffer */ 42 #define ERASE_CNT ((unsigned)3) 43 41 44 42 45 #ifndef M_PI … … 67 70 short *frm; /* Pointer to next frame to play in buf */ 68 71 short *mergebuf; /* Temporary merge buffer. */ 72 short *erasebuf; /* Temporary erase buffer. */ 69 73 #if defined(PJ_HAS_FLOATING_POINT) && PJ_HAS_FLOATING_POINT!=0 70 74 float *hanning; /* Hanning window. */ … … 330 334 } 331 335 336 if ((options & PJMEDIA_WSOLA_NO_DISCARD) == 0) { 337 wsola->erasebuf = (short*)pj_pool_calloc(pool, samples_per_frame * 338 ERASE_CNT, 339 sizeof(short)); 340 } 341 332 342 *p_wsola = wsola; 333 343 return PJ_SUCCESS; … … 366 376 367 377 dist = wsola->frm - start; 368 memmove(wsola->frm + frmsz, start + frmsz,369 (wsola->buf+wsola->cur_cnt - (start+frmsz)) << 1);370 371 memcpy(wsola->frm, wsola->mergebuf, frmsz << 1);378 pjmedia_move_samples(wsola->frm + frmsz, start + frmsz, 379 wsola->buf+wsola->cur_cnt - (start+frmsz)); 380 381 pjmedia_copy_samples(wsola->frm, wsola->mergebuf, frmsz); 372 382 373 383 wsola->cur_cnt = (pj_uint16_t)(wsola->cur_cnt + dist); … … 385 395 386 396 static unsigned compress(pjmedia_wsola *wsola, short *buf, unsigned count, 387 unsigned erase_cnt)397 unsigned del_cnt) 388 398 { 389 399 unsigned samples_del = 0, rep; … … 394 404 unsigned dist; 395 405 396 if (count <= ( erase_cnt << 1)) {406 if (count <= (del_cnt << 1)) { 397 407 TRACE_((THIS_FILE, "Not enough samples to compress!")); 398 408 return samples_del; … … 415 425 } 416 426 417 memmove(buf + frmsz, buf + frmsz + dist,418 (count - frmsz - dist) * 2);427 pjmedia_move_samples(buf + frmsz, buf + frmsz + dist, 428 count - frmsz - dist); 419 429 420 430 count -= dist; 421 431 samples_del += dist; 422 432 423 if (samples_del >= erase_cnt) {433 if (samples_del >= del_cnt) { 424 434 TRACE_((THIS_FILE, 425 435 "Erased %d of %d requested after %d iteration(s)", 426 samples_del, erase_cnt, rep));436 samples_del, del_cnt, rep)); 427 437 break; 428 438 } … … 453 463 454 464 455 memcpy(frm, wsola->frm, wsola->samples_per_frame << 1);465 pjmedia_copy_samples(frm, wsola->frm, wsola->samples_per_frame); 456 466 wsola->cur_cnt = (pj_uint16_t)(wsola->hist_cnt + 457 467 wsola->samples_per_frame); 458 memmove(wsola->buf, wsola->buf+wsola->samples_per_frame,459 wsola->cur_cnt << 1);468 pjmedia_move_samples(wsola->buf, wsola->buf+wsola->samples_per_frame, 469 wsola->cur_cnt); 460 470 461 471 } else { … … 466 476 } 467 477 468 memcpy(wsola->buf + wsola->cur_cnt, frm,469 wsola->samples_per_frame << 1);470 memcpy(frm, wsola->frm,471 wsola->samples_per_frame << 1);472 memmove(wsola->buf, wsola->buf+wsola->samples_per_frame,473 wsola->cur_cnt << 1);478 pjmedia_copy_samples(wsola->buf + wsola->cur_cnt, frm, 479 wsola->samples_per_frame); 480 pjmedia_copy_samples(frm, wsola->frm, 481 wsola->samples_per_frame); 482 pjmedia_move_samples(wsola->buf, wsola->buf+wsola->samples_per_frame, 483 wsola->cur_cnt); 474 484 } 475 485 … … 493 503 * rather than generating a new one. 494 504 */ 495 memcpy(frm, wsola->frm, wsola->samples_per_frame << 1);496 memmove(wsola->buf, wsola->buf+wsola->samples_per_frame,497 (wsola->cur_cnt - wsola->samples_per_frame) << 1);505 pjmedia_copy_samples(frm, wsola->frm, wsola->samples_per_frame); 506 pjmedia_move_samples(wsola->buf, wsola->buf+wsola->samples_per_frame, 507 wsola->cur_cnt - wsola->samples_per_frame); 498 508 499 509 pj_assert(wsola->cur_cnt >= … … 512 522 expand(wsola, new_samples); 513 523 514 memcpy(frm, wsola->frm, wsola->samples_per_frame << 1);515 memmove(wsola->buf, wsola->buf+wsola->samples_per_frame,516 (wsola->cur_cnt - wsola->samples_per_frame) << 1);524 pjmedia_copy_samples(frm, wsola->frm, wsola->samples_per_frame); 525 pjmedia_move_samples(wsola->buf, wsola->buf+wsola->samples_per_frame, 526 wsola->cur_cnt - wsola->samples_per_frame); 517 527 518 528 pj_assert(wsola->cur_cnt >= … … 531 541 532 542 PJ_DEF(pj_status_t) pjmedia_wsola_discard( pjmedia_wsola *wsola, 533 short buf[], 534 unsigned buf_cnt, 535 unsigned *erase_cnt) 536 { 537 PJ_ASSERT_RETURN(wsola && buf && buf_cnt && erase_cnt, PJ_EINVAL); 538 PJ_ASSERT_RETURN(*erase_cnt, PJ_EINVAL); 539 540 *erase_cnt = compress(wsola, buf, buf_cnt, *erase_cnt); 541 return (*erase_cnt) > 0 ? PJ_SUCCESS : PJ_ETOOSMALL; 542 } 543 544 543 short buf1[], 544 unsigned buf1_cnt, 545 short buf2[], 546 unsigned buf2_cnt, 547 unsigned *del_cnt) 548 { 549 PJ_ASSERT_RETURN(wsola && buf1 && buf1_cnt && del_cnt, PJ_EINVAL); 550 PJ_ASSERT_RETURN(*del_cnt, PJ_EINVAL); 551 552 if (buf2_cnt == 0) { 553 /* Buffer is contiguous space, no need to use temporary 554 * buffer. 555 */ 556 *del_cnt = compress(wsola, buf1, buf1_cnt, *del_cnt); 557 558 } else { 559 PJ_ASSERT_RETURN(buf2, PJ_EINVAL); 560 561 if (buf1_cnt < ERASE_CNT * wsola->samples_per_frame && 562 buf2_cnt < ERASE_CNT * wsola->samples_per_frame && 563 wsola->erasebuf == NULL) 564 { 565 /* We need erasebuf but WSOLA was created with 566 * PJMEDIA_WSOLA_NO_DISCARD flag. 567 */ 568 pj_assert(!"WSOLA need erase buffer!"); 569 return PJ_EINVALIDOP; 570 } 571 572 if (buf2_cnt >= ERASE_CNT * wsola->samples_per_frame) { 573 *del_cnt = compress(wsola, buf2, buf2_cnt, *del_cnt); 574 } else if (buf1_cnt >= ERASE_CNT * wsola->samples_per_frame) { 575 unsigned max; 576 577 *del_cnt = compress(wsola, buf1, buf1_cnt, *del_cnt); 578 579 max = *del_cnt; 580 if (max > buf2_cnt) 581 max = buf2_cnt; 582 583 pjmedia_move_samples(buf1+buf1_cnt-(*del_cnt), buf2, 584 max); 585 if (max < buf2_cnt) { 586 pjmedia_move_samples(buf2, buf2+(*del_cnt), 587 buf2_cnt-max); 588 } 589 590 } else { 591 unsigned buf_cnt = buf1_cnt + buf2_cnt; 592 unsigned max; 593 594 if (buf_cnt > ERASE_CNT * wsola->samples_per_frame) 595 buf_cnt = ERASE_CNT * wsola->samples_per_frame; 596 597 pjmedia_copy_samples(wsola->erasebuf, buf1, buf1_cnt); 598 pjmedia_copy_samples(wsola->erasebuf+buf1_cnt, buf2, 599 buf_cnt-buf1_cnt); 600 601 *del_cnt = compress(wsola, wsola->erasebuf, buf_cnt, *del_cnt); 602 603 buf_cnt -= (*del_cnt); 604 605 max = buf_cnt; 606 if (max > buf1_cnt) 607 max = buf1_cnt; 608 pjmedia_copy_samples(buf1, wsola->erasebuf, max); 609 610 if (max < buf_cnt) { 611 pjmedia_copy_samples(buf2, wsola->erasebuf+max, buf_cnt-max); 612 } 613 } 614 } 615 616 return (*del_cnt) > 0 ? PJ_SUCCESS : PJ_ETOOSMALL; 617 } 618 619
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