/* * Copyright (c) 1999 Cameron Grant * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #include #include "feeder_if.h" MALLOC_DEFINE(M_FMTFEEDER, "fmtfeed", "pcm format feeder"); #define FEEDBUFSZ 8192 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, }; /*****************************************************************************/ 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 = FEEDER_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 feeder_8to16le_desc[] = { {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 kobj_method_t feeder_8to16le_methods[] = { KOBJMETHOD(feeder_feed, feed_8to16le), { 0, 0 } }; FEEDER_DECLARE(feeder_8to16le, 0, NULL); /*****************************************************************************/ static int feed_16to8_init(pcm_feeder *f) { f->data = malloc(FEEDBUFSZ, M_FMTFEEDER, M_WAITOK | M_ZERO); return (f->data == NULL)? 0 : ENOMEM; } static int feed_16to8_free(pcm_feeder *f) { if (f->data) free(f->data, M_FMTFEEDER); 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 = FEEDER_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 feeder_16leto8_desc[] = { {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 kobj_method_t feeder_16leto8_methods[] = { KOBJMETHOD(feeder_init, feed_16to8_init), KOBJMETHOD(feeder_free, feed_16to8_free), KOBJMETHOD(feeder_feed, feed_16leto8), { 0, 0 } }; FEEDER_DECLARE(feeder_16leto8, 1, NULL); /*****************************************************************************/ 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 = FEEDER_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 feeder_monotostereo8_desc[] = { {FEEDER_FMT, AFMT_U8, AFMT_U8 | AFMT_STEREO, 0}, {FEEDER_FMT, AFMT_S8, AFMT_S8 | AFMT_STEREO, 0}, {0}, }; static kobj_method_t feeder_monotostereo8_methods[] = { KOBJMETHOD(feeder_feed, feed_monotostereo8), { 0, 0 } }; FEEDER_DECLARE(feeder_monotostereo8, 0, NULL); /*****************************************************************************/ 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 = FEEDER_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 feeder_monotostereo16_desc[] = { {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 kobj_method_t feeder_monotostereo16_methods[] = { KOBJMETHOD(feeder_feed, feed_monotostereo16), { 0, 0 } }; FEEDER_DECLARE(feeder_monotostereo16, 0, NULL); /*****************************************************************************/ static int feed_stereotomono8_init(pcm_feeder *f) { f->data = malloc(FEEDBUFSZ, M_FMTFEEDER, M_WAITOK | M_ZERO); return (f->data == NULL)? 0 : ENOMEM; } static int feed_stereotomono8_free(pcm_feeder *f) { if (f->data) free(f->data, M_FMTFEEDER); 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 = FEEDER_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 feeder_stereotomono8_desc[] = { {FEEDER_FMT, AFMT_U8 | AFMT_STEREO, AFMT_U8, 0}, {FEEDER_FMT, AFMT_S8 | AFMT_STEREO, AFMT_S8, 0}, {0}, }; static kobj_method_t feeder_stereotomono8_methods[] = { KOBJMETHOD(feeder_init, feed_stereotomono8_init), KOBJMETHOD(feeder_free, feed_stereotomono8_free), KOBJMETHOD(feeder_feed, feed_stereotomono8), { 0, 0 } }; FEEDER_DECLARE(feeder_stereotomono8, 1, NULL); /*****************************************************************************/ static int feed_stereotomono16_init(pcm_feeder *f) { f->data = malloc(FEEDBUFSZ, M_FMTFEEDER, M_WAITOK | M_ZERO); return (f->data == NULL)? 0 : ENOMEM; } static int feed_stereotomono16_free(pcm_feeder *f) { if (f->data) free(f->data, M_FMTFEEDER); 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 = FEEDER_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 feeder_stereotomono16_desc[] = { {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 kobj_method_t feeder_stereotomono16_methods[] = { KOBJMETHOD(feeder_init, feed_stereotomono16_init), KOBJMETHOD(feeder_free, feed_stereotomono16_free), KOBJMETHOD(feeder_feed, feed_stereotomono16), { 0, 0 } }; FEEDER_DECLARE(feeder_stereotomono16, 1, NULL); /*****************************************************************************/ 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 = FEEDER_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 feeder_endian_desc[] = { {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 kobj_method_t feeder_endian_methods[] = { KOBJMETHOD(feeder_feed, feed_endian), { 0, 0 } }; FEEDER_DECLARE(feeder_endian, 0, NULL); /*****************************************************************************/ 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 = FEEDER_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 feeder_sign8_desc[] = { {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 kobj_method_t feeder_sign8_methods[] = { KOBJMETHOD(feeder_feed, feed_sign), { 0, 0 } }; FEEDER_DECLARE(feeder_sign8, 0, (void *)1); static struct pcm_feederdesc feeder_sign16le_desc[] = { {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 kobj_method_t feeder_sign16le_methods[] = { KOBJMETHOD(feeder_feed, feed_sign), { 0, 0 } }; FEEDER_DECLARE(feeder_sign16le, -1, (void *)2); /*****************************************************************************/ 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 = FEEDER_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 feeder_ulawtou8_desc[] = { {FEEDER_FMT, AFMT_MU_LAW, AFMT_U8, 0}, {FEEDER_FMT, AFMT_MU_LAW | AFMT_STEREO, AFMT_U8 | AFMT_STEREO, 0}, {0}, }; static kobj_method_t feeder_ulawtou8_methods[] = { KOBJMETHOD(feeder_feed, feed_table), { 0, 0 } }; FEEDER_DECLARE(feeder_ulawtou8, 0, ulaw_to_u8); static struct pcm_feederdesc feeder_u8toulaw_desc[] = { {FEEDER_FMT, AFMT_U8, AFMT_MU_LAW, 0}, {FEEDER_FMT, AFMT_U8 | AFMT_STEREO, AFMT_MU_LAW | AFMT_STEREO, 0}, {0}, }; static kobj_method_t feeder_u8toulaw_methods[] = { KOBJMETHOD(feeder_feed, feed_table), { 0, 0 } }; FEEDER_DECLARE(feeder_u8toulaw, 0, u8_to_ulaw);