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author | Jeffrey Goode <jeffg7@gmail.com> | 2009-08-12 19:00:31 +0000 |
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committer | Jeffrey Goode <jeffg7@gmail.com> | 2009-08-12 19:00:31 +0000 |
commit | e3f36a1f473d2f9503c4e6adfc82de6db8ea1a20 (patch) | |
tree | 58a7caa3c3c63cc702eb2d5b4a3e0b82fae2f0c2 /apps/dsp.c | |
parent | 24bd4923fda2b1511ac1fe96338e50165fadf810 (diff) | |
download | rockbox-e3f36a1f473d2f9503c4e6adfc82de6db8ea1a20.tar.gz rockbox-e3f36a1f473d2f9503c4e6adfc82de6db8ea1a20.zip |
FS#10446: Bug defense in dsp.c, minor tweaks and comments
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22282 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/dsp.c')
-rw-r--r-- | apps/dsp.c | 36 |
1 files changed, 13 insertions, 23 deletions
diff --git a/apps/dsp.c b/apps/dsp.c index f9b94e8228..61fc027e4c 100644 --- a/apps/dsp.c +++ b/apps/dsp.c | |||
@@ -343,11 +343,10 @@ static void sample_input_lte_native_mono( | |||
343 | int32_t *d = dst[0] = dst[1] = &sample_buf[SAMPLE_BUF_LEFT_CHANNEL]; | 343 | int32_t *d = dst[0] = dst[1] = &sample_buf[SAMPLE_BUF_LEFT_CHANNEL]; |
344 | int scale = WORD_SHIFT; | 344 | int scale = WORD_SHIFT; |
345 | 345 | ||
346 | do | 346 | while (s < send) |
347 | { | 347 | { |
348 | *d++ = *s++ << scale; | 348 | *d++ = *s++ << scale; |
349 | } | 349 | } |
350 | while (s < send); | ||
351 | 350 | ||
352 | src[0] = (char *)s; | 351 | src[0] = (char *)s; |
353 | } | 352 | } |
@@ -362,7 +361,7 @@ static void sample_input_lte_native_i_stereo( | |||
362 | int32_t *dr = dst[1] = &sample_buf[SAMPLE_BUF_RIGHT_CHANNEL]; | 361 | int32_t *dr = dst[1] = &sample_buf[SAMPLE_BUF_RIGHT_CHANNEL]; |
363 | int scale = WORD_SHIFT; | 362 | int scale = WORD_SHIFT; |
364 | 363 | ||
365 | do | 364 | while (s < send) |
366 | { | 365 | { |
367 | int32_t slr = *s++; | 366 | int32_t slr = *s++; |
368 | #ifdef ROCKBOX_LITTLE_ENDIAN | 367 | #ifdef ROCKBOX_LITTLE_ENDIAN |
@@ -373,7 +372,6 @@ static void sample_input_lte_native_i_stereo( | |||
373 | *dr++ = (slr >> 16) << scale; | 372 | *dr++ = (slr >> 16) << scale; |
374 | #endif | 373 | #endif |
375 | } | 374 | } |
376 | while (s < send); | ||
377 | 375 | ||
378 | src[0] = (char *)s; | 376 | src[0] = (char *)s; |
379 | } | 377 | } |
@@ -389,12 +387,11 @@ static void sample_input_lte_native_ni_stereo( | |||
389 | int32_t *dr = dst[1] = &sample_buf[SAMPLE_BUF_RIGHT_CHANNEL]; | 387 | int32_t *dr = dst[1] = &sample_buf[SAMPLE_BUF_RIGHT_CHANNEL]; |
390 | int scale = WORD_SHIFT; | 388 | int scale = WORD_SHIFT; |
391 | 389 | ||
392 | do | 390 | while (sl < slend) |
393 | { | 391 | { |
394 | *dl++ = *sl++ << scale; | 392 | *dl++ = *sl++ << scale; |
395 | *dr++ = *sr++ << scale; | 393 | *dr++ = *sr++ << scale; |
396 | } | 394 | } |
397 | while (sl < slend); | ||
398 | 395 | ||
399 | src[0] = (char *)sl; | 396 | src[0] = (char *)sl; |
400 | src[1] = (char *)sr; | 397 | src[1] = (char *)sr; |
@@ -417,12 +414,11 @@ static void sample_input_gt_native_i_stereo( | |||
417 | int32_t *dl = dst[0] = &sample_buf[SAMPLE_BUF_LEFT_CHANNEL]; | 414 | int32_t *dl = dst[0] = &sample_buf[SAMPLE_BUF_LEFT_CHANNEL]; |
418 | int32_t *dr = dst[1] = &sample_buf[SAMPLE_BUF_RIGHT_CHANNEL]; | 415 | int32_t *dr = dst[1] = &sample_buf[SAMPLE_BUF_RIGHT_CHANNEL]; |
419 | 416 | ||
420 | do | 417 | while (s < send) |
421 | { | 418 | { |
422 | *dl++ = *s++; | 419 | *dl++ = *s++; |
423 | *dr++ = *s++; | 420 | *dr++ = *s++; |
424 | } | 421 | } |
425 | while (s < send); | ||
426 | 422 | ||
427 | src[0] = (char *)send; | 423 | src[0] = (char *)send; |
428 | } | 424 | } |
@@ -451,12 +447,12 @@ static void sample_input_new_format(struct dsp_config *dsp) | |||
451 | { | 447 | { |
452 | static const sample_input_fn_type sample_input_functions[] = | 448 | static const sample_input_fn_type sample_input_functions[] = |
453 | { | 449 | { |
454 | [SAMPLE_INPUT_LE_NATIVE_MONO] = sample_input_lte_native_mono, | ||
455 | [SAMPLE_INPUT_LE_NATIVE_I_STEREO] = sample_input_lte_native_i_stereo, | 450 | [SAMPLE_INPUT_LE_NATIVE_I_STEREO] = sample_input_lte_native_i_stereo, |
456 | [SAMPLE_INPUT_LE_NATIVE_NI_STEREO] = sample_input_lte_native_ni_stereo, | 451 | [SAMPLE_INPUT_LE_NATIVE_NI_STEREO] = sample_input_lte_native_ni_stereo, |
457 | [SAMPLE_INPUT_GT_NATIVE_MONO] = sample_input_gt_native_mono, | 452 | [SAMPLE_INPUT_LE_NATIVE_MONO] = sample_input_lte_native_mono, |
458 | [SAMPLE_INPUT_GT_NATIVE_I_STEREO] = sample_input_gt_native_i_stereo, | 453 | [SAMPLE_INPUT_GT_NATIVE_I_STEREO] = sample_input_gt_native_i_stereo, |
459 | [SAMPLE_INPUT_GT_NATIVE_NI_STEREO] = sample_input_gt_native_ni_stereo, | 454 | [SAMPLE_INPUT_GT_NATIVE_NI_STEREO] = sample_input_gt_native_ni_stereo, |
455 | [SAMPLE_INPUT_GT_NATIVE_MONO] = sample_input_gt_native_mono, | ||
460 | }; | 456 | }; |
461 | 457 | ||
462 | int convert = dsp->stereo_mode; | 458 | int convert = dsp->stereo_mode; |
@@ -477,13 +473,12 @@ static void sample_output_mono(int count, struct dsp_data *data, | |||
477 | const int scale = data->output_scale; | 473 | const int scale = data->output_scale; |
478 | const int dc_bias = 1 << (scale - 1); | 474 | const int dc_bias = 1 << (scale - 1); |
479 | 475 | ||
480 | do | 476 | while (count-- > 0) |
481 | { | 477 | { |
482 | int32_t lr = clip_sample_16((*s0++ + dc_bias) >> scale); | 478 | int32_t lr = clip_sample_16((*s0++ + dc_bias) >> scale); |
483 | *dst++ = lr; | 479 | *dst++ = lr; |
484 | *dst++ = lr; | 480 | *dst++ = lr; |
485 | } | 481 | } |
486 | while (--count > 0); | ||
487 | } | 482 | } |
488 | #endif /* DSP_HAVE_ASM_SAMPLE_OUTPUT_MONO */ | 483 | #endif /* DSP_HAVE_ASM_SAMPLE_OUTPUT_MONO */ |
489 | 484 | ||
@@ -497,12 +492,11 @@ static void sample_output_stereo(int count, struct dsp_data *data, | |||
497 | const int scale = data->output_scale; | 492 | const int scale = data->output_scale; |
498 | const int dc_bias = 1 << (scale - 1); | 493 | const int dc_bias = 1 << (scale - 1); |
499 | 494 | ||
500 | do | 495 | while (count-- > 0) |
501 | { | 496 | { |
502 | *dst++ = clip_sample_16((*s0++ + dc_bias) >> scale); | 497 | *dst++ = clip_sample_16((*s0++ + dc_bias) >> scale); |
503 | *dst++ = clip_sample_16((*s1++ + dc_bias) >> scale); | 498 | *dst++ = clip_sample_16((*s1++ + dc_bias) >> scale); |
504 | } | 499 | } |
505 | while (--count > 0); | ||
506 | } | 500 | } |
507 | #endif /* DSP_HAVE_ASM_SAMPLE_OUTPUT_STEREO */ | 501 | #endif /* DSP_HAVE_ASM_SAMPLE_OUTPUT_STEREO */ |
508 | 502 | ||
@@ -575,12 +569,11 @@ static void sample_output_dithered(int count, struct dsp_data *data, | |||
575 | pcm buffer and hardware is interleaved stereo */ | 569 | pcm buffer and hardware is interleaved stereo */ |
576 | d = &dst[0]; | 570 | d = &dst[0]; |
577 | 571 | ||
578 | do | 572 | while (count-- > 0) |
579 | { | 573 | { |
580 | int16_t s = *d++; | 574 | int16_t s = *d++; |
581 | *d++ = s; | 575 | *d++ = s; |
582 | } | 576 | } |
583 | while (--count > 0); | ||
584 | } | 577 | } |
585 | 578 | ||
586 | /** | 579 | /** |
@@ -1043,13 +1036,12 @@ static void channels_process_sound_chan_mono(int count, int32_t *buf[]) | |||
1043 | { | 1036 | { |
1044 | int32_t *sl = buf[0], *sr = buf[1]; | 1037 | int32_t *sl = buf[0], *sr = buf[1]; |
1045 | 1038 | ||
1046 | do | 1039 | while (count-- > 0) |
1047 | { | 1040 | { |
1048 | int32_t lr = *sl/2 + *sr/2; | 1041 | int32_t lr = *sl/2 + *sr/2; |
1049 | *sl++ = lr; | 1042 | *sl++ = lr; |
1050 | *sr++ = lr; | 1043 | *sr++ = lr; |
1051 | } | 1044 | } |
1052 | while (--count > 0); | ||
1053 | } | 1045 | } |
1054 | #endif /* DSP_HAVE_ASM_SOUND_CHAN_MONO */ | 1046 | #endif /* DSP_HAVE_ASM_SOUND_CHAN_MONO */ |
1055 | 1047 | ||
@@ -1060,14 +1052,13 @@ static void channels_process_sound_chan_custom(int count, int32_t *buf[]) | |||
1060 | const int32_t cross = dsp_sw_cross; | 1052 | const int32_t cross = dsp_sw_cross; |
1061 | int32_t *sl = buf[0], *sr = buf[1]; | 1053 | int32_t *sl = buf[0], *sr = buf[1]; |
1062 | 1054 | ||
1063 | do | 1055 | while (count-- > 0) |
1064 | { | 1056 | { |
1065 | int32_t l = *sl; | 1057 | int32_t l = *sl; |
1066 | int32_t r = *sr; | 1058 | int32_t r = *sr; |
1067 | *sl++ = FRACMUL(l, gain) + FRACMUL(r, cross); | 1059 | *sl++ = FRACMUL(l, gain) + FRACMUL(r, cross); |
1068 | *sr++ = FRACMUL(r, gain) + FRACMUL(l, cross); | 1060 | *sr++ = FRACMUL(r, gain) + FRACMUL(l, cross); |
1069 | } | 1061 | } |
1070 | while (--count > 0); | ||
1071 | } | 1062 | } |
1072 | #endif /* DSP_HAVE_ASM_SOUND_CHAN_CUSTOM */ | 1063 | #endif /* DSP_HAVE_ASM_SOUND_CHAN_CUSTOM */ |
1073 | 1064 | ||
@@ -1088,13 +1079,12 @@ static void channels_process_sound_chan_karaoke(int count, int32_t *buf[]) | |||
1088 | { | 1079 | { |
1089 | int32_t *sl = buf[0], *sr = buf[1]; | 1080 | int32_t *sl = buf[0], *sr = buf[1]; |
1090 | 1081 | ||
1091 | do | 1082 | while (count-- > 0) |
1092 | { | 1083 | { |
1093 | int32_t ch = *sl/2 - *sr/2; | 1084 | int32_t ch = *sl/2 - *sr/2; |
1094 | *sl++ = ch; | 1085 | *sl++ = ch; |
1095 | *sr++ = -ch; | 1086 | *sr++ = -ch; |
1096 | } | 1087 | } |
1097 | while (--count > 0); | ||
1098 | } | 1088 | } |
1099 | #endif /* DSP_HAVE_ASM_SOUND_CHAN_KARAOKE */ | 1089 | #endif /* DSP_HAVE_ASM_SOUND_CHAN_KARAOKE */ |
1100 | 1090 | ||
@@ -1504,7 +1494,7 @@ void dsp_set_replaygain(void) | |||
1504 | } | 1494 | } |
1505 | } | 1495 | } |
1506 | 1496 | ||
1507 | /* Store in S8.23 format to simplify calculations. */ | 1497 | /* Store in S7.24 format to simplify calculations. */ |
1508 | replaygain = gain; | 1498 | replaygain = gain; |
1509 | set_gain(&AUDIO_DSP); | 1499 | set_gain(&AUDIO_DSP); |
1510 | } | 1500 | } |