diff options
author | cg <cg@FreeBSD.org> | 2000-09-23 22:11:32 +0000 |
---|---|---|
committer | cg <cg@FreeBSD.org> | 2000-09-23 22:11:32 +0000 |
commit | 3e27c54902727d84e74d340ce28456d36e4a6a8d (patch) | |
tree | d03b724996f256e02f097a6e8bc777111c7164c0 /sys/dev/sound/pcm/feeder.c | |
parent | 27a6dc9c5ae8d6d5c98f20e46982df0ea10289da (diff) | |
download | FreeBSD-src-3e27c54902727d84e74d340ce28456d36e4a6a8d.zip FreeBSD-src-3e27c54902727d84e74d340ce28456d36e4a6a8d.tar.gz |
prepare for adding a rate conversion feeder.
move format conversion feeders to feeder_fmt.c - no pertinent history so no
repo-copy.
Diffstat (limited to 'sys/dev/sound/pcm/feeder.c')
-rw-r--r-- | sys/dev/sound/pcm/feeder.c | 500 |
1 files changed, 90 insertions, 410 deletions
diff --git a/sys/dev/sound/pcm/feeder.c b/sys/dev/sound/pcm/feeder.c index 66e9fb1..c10d62e 100644 --- a/sys/dev/sound/pcm/feeder.c +++ b/sys/dev/sound/pcm/feeder.c @@ -28,79 +28,9 @@ #include <dev/sound/pcm/sound.h> -#define FEEDBUFSZ 8192 +#define MAXFEEDERS 256 #undef FEEDER_DEBUG -static unsigned char ulaw_to_u8[] = { - 3, 7, 11, 15, 19, 23, 27, 31, - 35, 39, 43, 47, 51, 55, 59, 63, - 66, 68, 70, 72, 74, 76, 78, 80, - 82, 84, 86, 88, 90, 92, 94, 96, - 98, 99, 100, 101, 102, 103, 104, 105, - 106, 107, 108, 109, 110, 111, 112, 113, - 113, 114, 114, 115, 115, 116, 116, 117, - 117, 118, 118, 119, 119, 120, 120, 121, - 121, 121, 122, 122, 122, 122, 123, 123, - 123, 123, 124, 124, 124, 124, 125, 125, - 125, 125, 125, 125, 126, 126, 126, 126, - 126, 126, 126, 126, 127, 127, 127, 127, - 127, 127, 127, 127, 127, 127, 127, 127, - 128, 128, 128, 128, 128, 128, 128, 128, - 128, 128, 128, 128, 128, 128, 128, 128, - 128, 128, 128, 128, 128, 128, 128, 128, - 253, 249, 245, 241, 237, 233, 229, 225, - 221, 217, 213, 209, 205, 201, 197, 193, - 190, 188, 186, 184, 182, 180, 178, 176, - 174, 172, 170, 168, 166, 164, 162, 160, - 158, 157, 156, 155, 154, 153, 152, 151, - 150, 149, 148, 147, 146, 145, 144, 143, - 143, 142, 142, 141, 141, 140, 140, 139, - 139, 138, 138, 137, 137, 136, 136, 135, - 135, 135, 134, 134, 134, 134, 133, 133, - 133, 133, 132, 132, 132, 132, 131, 131, - 131, 131, 131, 131, 130, 130, 130, 130, - 130, 130, 130, 130, 129, 129, 129, 129, - 129, 129, 129, 129, 129, 129, 129, 129, - 128, 128, 128, 128, 128, 128, 128, 128, - 128, 128, 128, 128, 128, 128, 128, 128, - 128, 128, 128, 128, 128, 128, 128, 128, -}; - -static unsigned char u8_to_ulaw[] = { - 0, 0, 0, 0, 0, 1, 1, 1, - 1, 2, 2, 2, 2, 3, 3, 3, - 3, 4, 4, 4, 4, 5, 5, 5, - 5, 6, 6, 6, 6, 7, 7, 7, - 7, 8, 8, 8, 8, 9, 9, 9, - 9, 10, 10, 10, 10, 11, 11, 11, - 11, 12, 12, 12, 12, 13, 13, 13, - 13, 14, 14, 14, 14, 15, 15, 15, - 15, 16, 16, 17, 17, 18, 18, 19, - 19, 20, 20, 21, 21, 22, 22, 23, - 23, 24, 24, 25, 25, 26, 26, 27, - 27, 28, 28, 29, 29, 30, 30, 31, - 31, 32, 33, 34, 35, 36, 37, 38, - 39, 40, 41, 42, 43, 44, 45, 46, - 47, 49, 51, 53, 55, 57, 59, 61, - 63, 66, 70, 74, 78, 84, 92, 104, - 254, 231, 219, 211, 205, 201, 197, 193, - 190, 188, 186, 184, 182, 180, 178, 176, - 175, 174, 173, 172, 171, 170, 169, 168, - 167, 166, 165, 164, 163, 162, 161, 160, - 159, 159, 158, 158, 157, 157, 156, 156, - 155, 155, 154, 154, 153, 153, 152, 152, - 151, 151, 150, 150, 149, 149, 148, 148, - 147, 147, 146, 146, 145, 145, 144, 144, - 143, 143, 143, 143, 142, 142, 142, 142, - 141, 141, 141, 141, 140, 140, 140, 140, - 139, 139, 139, 139, 138, 138, 138, 138, - 137, 137, 137, 137, 136, 136, 136, 136, - 135, 135, 135, 135, 134, 134, 134, 134, - 133, 133, 133, 133, 132, 132, 132, 132, - 131, 131, 131, 131, 130, 130, 130, 130, - 129, 129, 129, 129, 128, 128, 128, 128, -}; - struct feedertab_entry { SLIST_ENTRY(feedertab_entry) link; pcm_feeder *feeder; @@ -149,347 +79,13 @@ feeder_register(void *p) printf("MAXFEEDERS exceeded\n"); } -/*****************************************************************************/ - -static int -feed_root(pcm_feeder *feeder, pcm_channel *ch, u_int8_t *buffer, u_int32_t count, struct uio *stream) -{ - int ret, s; - - KASSERT(count, ("feed_root: count == 0")); - count &= ~((1 << ch->align) - 1); - KASSERT(count, ("feed_root: aligned count == 0")); - - s = spltty(); - count = min(count, stream->uio_resid); - if (count) { - ret = uiomove(buffer, count, stream); - KASSERT(ret == 0, ("feed_root: uiomove failed")); - } - splx(s); - - return count; -} -static pcm_feeder feeder_root = { "root", 0, NULL, NULL, NULL, feed_root }; -SYSINIT(feeder_root, SI_SUB_DRIVERS, SI_ORDER_FIRST, feeder_register, &feeder_root); - -/*****************************************************************************/ - -static int -feed_8to16le(pcm_feeder *f, pcm_channel *c, u_int8_t *b, u_int32_t count, struct uio *stream) -{ - int i, j, k; - - k = f->source->feed(f->source, c, b, count / 2, stream); - j = k - 1; - i = j * 2 + 1; - while (i > 0 && j >= 0) { - b[i--] = b[j--]; - b[i--] = 0; - } - return k * 2; -} - -static struct pcm_feederdesc desc_8to16le[] = { - {FEEDER_FMT, AFMT_U8, AFMT_U16_LE, 0}, - {FEEDER_FMT, AFMT_U8 | AFMT_STEREO, AFMT_U16_LE | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_S8, AFMT_S16_LE, 0}, - {FEEDER_FMT, AFMT_S8 | AFMT_STEREO, AFMT_S16_LE | AFMT_STEREO, 0}, - {0}, -}; -static pcm_feeder feeder_8to16le = - { "8to16le", 0, desc_8to16le, NULL, NULL, feed_8to16le }; -SYSINIT(feeder_8to16le, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_8to16le); - -/*****************************************************************************/ - -static int -feed_16to8_init(pcm_feeder *f) -{ - f->data = malloc(FEEDBUFSZ, M_DEVBUF, M_NOWAIT); - return (f->data == NULL); -} - -static int -feed_16to8_free(pcm_feeder *f) -{ - if (f->data) free(f->data, M_DEVBUF); - f->data = NULL; - return 0; -} - -static int -feed_16leto8(pcm_feeder *f, pcm_channel *c, u_int8_t *b, u_int32_t count, struct uio *stream) -{ - u_int32_t i = 0, toget = count * 2; - int j = 1, k; - - k = f->source->feed(f->source, c, f->data, min(toget, FEEDBUFSZ), stream); - while (j < k) { - b[i++] = ((u_int8_t *)f->data)[j]; - j += 2; - } - return i; -} - -static struct pcm_feederdesc desc_16leto8[] = { - {FEEDER_FMT, AFMT_U16_LE, AFMT_U8, 0}, - {FEEDER_FMT, AFMT_U16_LE | AFMT_STEREO, AFMT_U8 | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_S16_LE, AFMT_S8, 0}, - {FEEDER_FMT, AFMT_S16_LE | AFMT_STEREO, AFMT_S8 | AFMT_STEREO, 0}, - {0}, -}; -static pcm_feeder feeder_16leto8 = - { "16leto8", 1, desc_16leto8, feed_16to8_init, feed_16to8_free, feed_16leto8 }; -SYSINIT(feeder_16leto8, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_16leto8); - -/*****************************************************************************/ - -static int -feed_monotostereo8(pcm_feeder *f, pcm_channel *c, u_int8_t *b, u_int32_t count, struct uio *stream) -{ - int i, j, k = f->source->feed(f->source, c, b, count / 2, stream); - - j = k - 1; - i = j * 2 + 1; - while (i > 0 && j >= 0) { - b[i--] = b[j]; - b[i--] = b[j]; - j--; - } - return k * 2; -} - -static struct pcm_feederdesc desc_monotostereo8[] = { - {FEEDER_FMT, AFMT_U8, AFMT_U8 | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_S8, AFMT_S8 | AFMT_STEREO, 0}, - {0}, -}; -static pcm_feeder feeder_monotostereo8 = - { "monotostereo8", 0, desc_monotostereo8, NULL, NULL, feed_monotostereo8 }; -SYSINIT(feeder_monotostereo8, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_monotostereo8); - -/*****************************************************************************/ - -static int -feed_monotostereo16(pcm_feeder *f, pcm_channel *c, u_int8_t *b, u_int32_t count, struct uio *stream) -{ - int i, j, k = f->source->feed(f->source, c, b, count / 2, stream); - u_int8_t x, y; - - j = k - 1; - i = j * 2 + 1; - while (i > 3 && j >= 1) { - x = b[j--]; - y = b[j--]; - b[i--] = x; - b[i--] = y; - b[i--] = x; - b[i--] = y; - } - return k * 2; -} - -static struct pcm_feederdesc desc_monotostereo16[] = { - {FEEDER_FMT, AFMT_U16_LE, AFMT_U16_LE | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_S16_LE, AFMT_S16_LE | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_U16_BE, AFMT_U16_BE | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_S16_BE, AFMT_S16_BE | AFMT_STEREO, 0}, - {0}, -}; -static pcm_feeder feeder_monotostereo16 = - { "monotostereo16", 0, desc_monotostereo16, NULL, NULL, feed_monotostereo16 }; -SYSINIT(feeder_monotostereo16, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_monotostereo16); - -/*****************************************************************************/ - -static int -feed_stereotomono8_init(pcm_feeder *f) -{ - f->data = malloc(FEEDBUFSZ, M_DEVBUF, M_NOWAIT); - return (f->data == NULL); -} - -static int -feed_stereotomono8_free(pcm_feeder *f) -{ - if (f->data) free(f->data, M_DEVBUF); - f->data = NULL; - return 0; -} - -static int -feed_stereotomono8(pcm_feeder *f, pcm_channel *c, u_int8_t *b, u_int32_t count, struct uio *stream) -{ - u_int32_t i = 0, toget = count * 2; - int j = 0, k; - - k = f->source->feed(f->source, c, f->data, min(toget, FEEDBUFSZ), stream); - while (j < k) { - b[i++] = ((u_int8_t *)f->data)[j]; - j += 2; - } - return i; -} - -static struct pcm_feederdesc desc_stereotomono8[] = { - {FEEDER_FMT, AFMT_U8 | AFMT_STEREO, AFMT_U8, 0}, - {FEEDER_FMT, AFMT_S8 | AFMT_STEREO, AFMT_S8, 0}, - {0}, -}; -static pcm_feeder feeder_stereotomono8 = - { "stereotomono8", 1, desc_stereotomono8, feed_stereotomono8_init, feed_stereotomono8_free, feed_stereotomono8 }; -SYSINIT(feeder_stereotomono8, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_stereotomono8); - -/*****************************************************************************/ - -static int -feed_stereotomono16_init(pcm_feeder *f) -{ - f->data = malloc(FEEDBUFSZ, M_DEVBUF, M_NOWAIT); - return (f->data == NULL); -} - -static int -feed_stereotomono16_free(pcm_feeder *f) -{ - if (f->data) free(f->data, M_DEVBUF); - f->data = NULL; - return 0; -} - -static int -feed_stereotomono16(pcm_feeder *f, pcm_channel *c, u_int8_t *b, u_int32_t count, struct uio *stream) -{ - u_int32_t i = 0, toget = count * 2; - int j = 0, k; - - k = f->source->feed(f->source, c, f->data, min(toget, FEEDBUFSZ), stream); - while (j < k) { - b[i++] = ((u_int8_t *)f->data)[j]; - b[i++] = ((u_int8_t *)f->data)[j + 1]; - j += 4; - } - return i; -} - -static struct pcm_feederdesc desc_stereotomono16[] = { - {FEEDER_FMT, AFMT_U16_LE | AFMT_STEREO, AFMT_U16_LE, 0}, - {FEEDER_FMT, AFMT_S16_LE | AFMT_STEREO, AFMT_S16_LE, 0}, - {FEEDER_FMT, AFMT_U16_BE | AFMT_STEREO, AFMT_U16_BE, 0}, - {FEEDER_FMT, AFMT_S16_BE | AFMT_STEREO, AFMT_S16_BE, 0}, - {0}, -}; -static pcm_feeder feeder_stereotomono16 = - { "stereotomono16", 1, desc_stereotomono16, feed_stereotomono16_init, feed_stereotomono16_free, feed_stereotomono16 }; -SYSINIT(feeder_stereotomono16, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_stereotomono16); - -/*****************************************************************************/ - -static int -feed_endian(pcm_feeder *f, pcm_channel *c, u_int8_t *b, u_int32_t count, struct uio *stream) -{ - u_int8_t t; - int i = 0, j = f->source->feed(f->source, c, b, count, stream); - - while (i < j) { - t = b[i]; - b[i] = b[i + 1]; - b[i + 1] = t; - i += 2; - } - return i; -} - -static struct pcm_feederdesc desc_endian[] = { - {FEEDER_FMT, AFMT_U16_LE, AFMT_U16_BE, 0}, - {FEEDER_FMT, AFMT_U16_LE | AFMT_STEREO, AFMT_U16_BE | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_S16_LE, AFMT_S16_BE, 0}, - {FEEDER_FMT, AFMT_S16_LE | AFMT_STEREO, AFMT_S16_BE | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_U16_BE, AFMT_U16_LE, 0}, - {FEEDER_FMT, AFMT_U16_BE | AFMT_STEREO, AFMT_U16_LE | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_S16_BE, AFMT_S16_LE, 0}, - {FEEDER_FMT, AFMT_S16_BE | AFMT_STEREO, AFMT_S16_LE | AFMT_STEREO, 0}, - {0}, -}; -static pcm_feeder feeder_endian = { "endian", -1, desc_endian, NULL, NULL, feed_endian }; -SYSINIT(feeder_endian, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_endian); - -/*****************************************************************************/ - -static int -feed_sign(pcm_feeder *f, pcm_channel *c, u_int8_t *b, u_int32_t count, struct uio *stream) -{ - int i = 0, j = f->source->feed(f->source, c, b, count, stream); - int ssz = (int)f->data, ofs = ssz - 1; - - while (i < j) { - b[i + ofs] ^= 0x80; - i += ssz; - } - return i; -} - -static struct pcm_feederdesc desc_sign8[] = { - {FEEDER_FMT, AFMT_U8, AFMT_S8, 0}, - {FEEDER_FMT, AFMT_U8 | AFMT_STEREO, AFMT_S8 | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_S8, AFMT_U8, 0}, - {FEEDER_FMT, AFMT_S8 | AFMT_STEREO, AFMT_U8 | AFMT_STEREO, 0}, - {0}, -}; -static pcm_feeder feeder_sign8 = - { "sign8", 0, desc_sign8, NULL, NULL, feed_sign, (void *)1 }; -SYSINIT(feeder_sign8, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_sign8); - -static struct pcm_feederdesc desc_sign16le[] = { - {FEEDER_FMT, AFMT_U16_LE, AFMT_S16_LE, 0}, - {FEEDER_FMT, AFMT_U16_LE | AFMT_STEREO, AFMT_S16_LE | AFMT_STEREO, 0}, - {FEEDER_FMT, AFMT_S16_LE, AFMT_U16_LE, 0}, - {FEEDER_FMT, AFMT_S16_LE | AFMT_STEREO, AFMT_U16_LE | AFMT_STEREO, 0}, - {0}, -}; -static pcm_feeder feeder_sign16le = - { "sign16le", -1, desc_sign16le, NULL, NULL, feed_sign, (void *)2 }; -SYSINIT(feeder_sign16le, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_sign16le); - -/*****************************************************************************/ - -static int -feed_table(pcm_feeder *f, pcm_channel *c, u_int8_t *b, u_int32_t count, struct uio *stream) -{ - int i = 0, j = f->source->feed(f->source, c, b, count, stream); - - while (i < j) { - b[i] = ((u_int8_t *)f->data)[b[i]]; - i++; - } - return i; -} - -static struct pcm_feederdesc desc_ulawtou8[] = { - {FEEDER_FMT, AFMT_MU_LAW, AFMT_U8, 0}, - {FEEDER_FMT, AFMT_MU_LAW | AFMT_STEREO, AFMT_U8 | AFMT_STEREO, 0}, - {0}, -}; -static pcm_feeder feeder_ulawtou8 = - { "ulawtou8", 0, desc_ulawtou8, NULL, NULL, feed_table, ulaw_to_u8 }; -SYSINIT(feeder_ulawtou8, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_ulawtou8); - -static struct pcm_feederdesc desc_u8toulaw[] = { - {FEEDER_FMT, AFMT_U8, AFMT_MU_LAW, 0}, - {FEEDER_FMT, AFMT_U8 | AFMT_STEREO, AFMT_MU_LAW | AFMT_STEREO, 0}, - {0}, -}; -static pcm_feeder feeder_u8toulaw = - { "u8toulaw", 0, desc_u8toulaw, NULL, NULL, feed_table, u8_to_ulaw }; -SYSINIT(feeder_u8toulaw, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder_u8toulaw); - -/*****************************************************************************/ - static int cmpdesc(struct pcm_feederdesc *n, struct pcm_feederdesc *m) { - return ((n->type == m->type) && (n->in == m->in) && (n->out == m->out) && (n->flags == m->flags)); + return ((n->type == m->type) && + ((n->in == 0) || (n->in == m->in)) && + ((n->out == 0) || (n->out == m->out)) && + (n->flags == m->flags)); } pcm_feeder * @@ -517,6 +113,39 @@ feeder_getroot() } int +feeder_set(pcm_feeder *feeder, int what, int value) +{ + if (feeder->set) + return feeder->set(feeder, what, value); + else + return -1; +} + +int +chn_addfeeder(pcm_channel *c, pcm_feeder *f) +{ + pcm_feeder *nf; + struct pcm_feederdesc *nfdesc; + + nf = malloc(sizeof(*nf), M_DEVBUF, M_NOWAIT); + nfdesc = malloc(sizeof(*nfdesc), M_DEVBUF, M_NOWAIT); + *nfdesc = *(f->desc); + *nf = *f; + nf->desc = nfdesc; + nf->source = c->feeder; + if (nf->init) + nf->init(nf); + if (nf->align > 0) + c->align += nf->align; + else if (nf->align < 0 && c->align < -nf->align) + c->align = -nf->align; + + c->feeder = nf; + + return 0; +} + +int chn_removefeeder(pcm_channel *c) { pcm_feeder *f; @@ -526,11 +155,26 @@ chn_removefeeder(pcm_channel *c) f = c->feeder->source; if (c->feeder->free) c->feeder->free(c->feeder); + free(c->feeder->desc, M_DEVBUF); free(c->feeder, M_DEVBUF); c->feeder = f; return 0; } +pcm_feeder * +chn_findfeeder(pcm_channel *c, u_int32_t type) +{ + pcm_feeder *f; + + f = c->feeder; + while (f != NULL) { + if (f->desc->type == type) + return f; + f = f->source; + } + return NULL; +} + static int chainok(pcm_feeder *test, pcm_feeder *stop) { @@ -597,7 +241,7 @@ feeder_fmtchain(u_int32_t *to, pcm_feeder *source, pcm_feeder *stop, int maxdept } u_int32_t -chn_feedchain(pcm_channel *c, u_int32_t *to) +chn_fmtchain(pcm_channel *c, u_int32_t *to) { pcm_feeder *try, *stop; int max; @@ -635,3 +279,39 @@ chn_feedchain(pcm_channel *c, u_int32_t *to) #endif return c->feeder->desc->out; } + +/*****************************************************************************/ + +static int +feed_root(pcm_feeder *feeder, pcm_channel *ch, u_int8_t *buffer, u_int32_t count, struct uio *stream) +{ + int ret, s; + + KASSERT(count, ("feed_root: count == 0")); + count &= ~((1 << ch->align) - 1); + KASSERT(count, ("feed_root: aligned count == 0 (align = %d)", ch->align)); + + s = spltty(); + count = min(count, stream->uio_resid); + if (count) { + ret = uiomove(buffer, count, stream); + KASSERT(ret == 0, ("feed_root: uiomove failed")); + } + splx(s); + + return count; +} +static pcm_feeder feeder_root = { + "root", + 0, + NULL, + NULL, + NULL, + NULL, + feed_root, +}; +SYSINIT(feeder_root, SI_SUB_DRIVERS, SI_ORDER_FIRST, feeder_register, &feeder_root); + + + + |