summaryrefslogtreecommitdiff
path: root/regress/sys/dev/audio/autest.c
diff options
context:
space:
mode:
Diffstat (limited to 'regress/sys/dev/audio/autest.c')
-rw-r--r--regress/sys/dev/audio/autest.c813
1 files changed, 0 insertions, 813 deletions
diff --git a/regress/sys/dev/audio/autest.c b/regress/sys/dev/audio/autest.c
deleted file mode 100644
index a8ce56ceee0..00000000000
--- a/regress/sys/dev/audio/autest.c
+++ /dev/null
@@ -1,813 +0,0 @@
-/* $OpenBSD: autest.c,v 1.13 2016/08/27 04:32:44 guenther Exp $ */
-
-/*
- * Copyright (c) 2002 Jason L. Wright (jason@thought.net)
- * 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 ``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 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.
- */
-
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/audioio.h>
-#include <sys/time.h>
-#include <err.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-/* XXX ADPCM is currently pretty broken... diagnosis and fix welcome */
-#undef USE_ADPCM
-
-#include "adpcm.h"
-#include "law.h"
-
-struct ausrate {
- struct timeval tv_begin;
- struct timeval tv_end;
- u_int r_rate; /* requested rate */
- u_int s_rate; /* rate from audio layer */
- u_int c_rate; /* computed rate */
- int bps; /* bytes per sample */
- int bytes; /* number of bytes played */
- float err;
-};
-
-int main(int, char **);
-void check_encoding(int, audio_encoding_t *, int);
-void check_encoding_mono(int, audio_encoding_t *, int);
-void check_encoding_stereo(int, audio_encoding_t *, int);
-void enc_ulaw_8(int, audio_encoding_t *, int, int);
-void enc_alaw_8(int, audio_encoding_t *, int, int);
-void enc_ulinear_8(int, audio_encoding_t *, int, int);
-void enc_ulinear_16(int, audio_encoding_t *, int, int, int);
-void enc_slinear_8(int, audio_encoding_t *, int, int);
-void enc_slinear_16(int, audio_encoding_t *, int, int, int);
-void enc_adpcm_8(int, audio_encoding_t *, int, int);
-void audio_wait(int);
-void check_srate(struct ausrate *);
-void mark_time(struct timeval *);
-int get_int(const char *, int *);
-int get_double(const char *, double *);
-
-#define PLAYFREQ 440.0
-#define PLAYSECS 2
-double playfreq = PLAYFREQ;
-
-#define DEFAULT_DEV "/dev/sound"
-
-int
-get_double(const char *buf, double *d)
-{
- char *ep;
- long dd;
-
- errno = 0;
- dd = strtod(buf, &ep);
- if (buf[0] == '\0' || *ep != '\0')
- return (-1);
- if (errno == ERANGE && (dd == -HUGE_VAL || dd == HUGE_VAL))
- return (-1);
- *d = dd;
- return (0);
-}
-
-int
-get_int(const char *buf, int *i)
-{
- char *ep;
- long lv;
-
- errno = 0;
- lv = strtol(buf, &ep, 10);
- if (buf[0] == '\0' || *ep != '\0')
- return (-1);
- if (errno == ERANGE && (lv == LONG_MAX || lv == LONG_MIN))
- return (-1);
- if (lv < INT_MIN || lv > INT_MAX)
- return (-1);
- *i = lv;
- return (0);
-}
-
-int
-main(int argc, char **argv)
-{
- audio_info_t ainfo;
- char *fname = NULL;
- int fd, i, c;
- int rate = 8000;
-
- while ((c = getopt(argc, argv, "f:r:t:")) != -1) {
- switch (c) {
- case 'f':
- fname = optarg;
- break;
- case 'r':
- if (get_int(optarg, &rate) || rate <= 0) {
- fprintf(stderr, "%s bad rate %s\n",
- argv[0], optarg);
- return (1);
- }
- break;
- case 't':
- if (get_double(optarg, &playfreq) || playfreq <= 0.0) {
- fprintf(stderr, "%s bad freq %s\n",
- argv[0], optarg);
- return (1);
- }
- break;
- case '?':
- default:
- fprintf(stderr, "%s [-f device]\n", argv[0]);
- return (1);
- }
- }
-
- if (fname == NULL)
- fname = DEFAULT_DEV;
-
- fd = open(fname, O_RDWR, 0);
- if (fd == -1)
- err(1, "open");
-
-
- if (ioctl(fd, AUDIO_GETINFO, &ainfo) == -1)
- err(1, "%s: audio_getinfo", fname);
-
- for (i = 0; ; i++) {
- audio_encoding_t enc;
-
- enc.index = i;
- if (ioctl(fd, AUDIO_GETENC, &enc) == -1)
- break;
- check_encoding(fd, &enc, rate);
- }
- close(fd);
-
- return (0);
-}
-
-void
-check_srate(struct ausrate *rt)
-{
- struct timeval t;
- float tm, b, r, err;
-
- timersub(&rt->tv_end, &rt->tv_begin, &t);
- tm = (float)t.tv_sec + ((float)t.tv_usec / 1000000.0);
- b = (float)rt->bytes / (float)rt->bps;
- r = b / tm;
-
- err = fabs((float)rt->s_rate - r);
- err /= r * 0.01;
- rt->err = err;
- rt->c_rate = rintf(r);
- printf("(s %u c %u e %3.1f%%)",
- rt->s_rate, rt->c_rate, rt->err);
-}
-
-void
-check_encoding(int fd, audio_encoding_t *enc, int rate)
-{
- printf("%s:%d%s",
- enc->name,
- enc->precision,
- (enc->flags & AUDIO_ENCODINGFLAG_EMULATED) ? "*" : "");
- fflush(stdout);
- check_encoding_mono(fd, enc, rate);
- check_encoding_stereo(fd, enc, rate);
- printf("\n");
-}
-
-void
-mark_time(struct timeval *tv)
-{
- if (gettimeofday(tv, NULL) == -1)
- err(1, "gettimeofday");
-}
-
-void
-check_encoding_mono(int fd, audio_encoding_t *enc, int rate)
-{
- int skipped = 0;
-
- printf("...mono");
- fflush(stdout);
-
- if (enc->precision == 8) {
- switch (enc->encoding) {
- case AUDIO_ENCODING_ULAW:
- enc_ulaw_8(fd, enc, 1, rate);
- break;
- case AUDIO_ENCODING_ALAW:
- enc_alaw_8(fd, enc, 1, rate);
- break;
- case AUDIO_ENCODING_ULINEAR:
- case AUDIO_ENCODING_ULINEAR_LE:
- case AUDIO_ENCODING_ULINEAR_BE:
- enc_ulinear_8(fd, enc, 1, rate);
- break;
- case AUDIO_ENCODING_SLINEAR:
- case AUDIO_ENCODING_SLINEAR_LE:
- case AUDIO_ENCODING_SLINEAR_BE:
- enc_slinear_8(fd, enc, 1, rate);
- break;
- case AUDIO_ENCODING_ADPCM:
- enc_adpcm_8(fd, enc, 1, rate);
- break;
- default:
- skipped = 1;
- }
- }
-
- if (enc->precision == 16) {
- switch (enc->encoding) {
- case AUDIO_ENCODING_ULINEAR_LE:
- enc_ulinear_16(fd, enc, 1, LITTLE_ENDIAN, rate);
- break;
- case AUDIO_ENCODING_ULINEAR_BE:
- enc_ulinear_16(fd, enc, 1, BIG_ENDIAN, rate);
- break;
- case AUDIO_ENCODING_SLINEAR_LE:
- enc_slinear_16(fd, enc, 1, LITTLE_ENDIAN, rate);
- break;
- case AUDIO_ENCODING_SLINEAR_BE:
- enc_slinear_16(fd, enc, 1, BIG_ENDIAN, rate);
- break;
- default:
- skipped = 1;
- }
- }
-
- if (skipped)
- printf("[skip]");
-}
-
-void
-check_encoding_stereo(int fd, audio_encoding_t *enc, int rate)
-{
- int skipped = 0;
-
- printf("...stereo");
- fflush(stdout);
-
- if (enc->precision == 8) {
- switch (enc->encoding) {
- case AUDIO_ENCODING_ULAW:
- enc_ulaw_8(fd, enc, 2, rate);
- break;
- case AUDIO_ENCODING_ALAW:
- enc_alaw_8(fd, enc, 2, rate);
- break;
- case AUDIO_ENCODING_ULINEAR:
- case AUDIO_ENCODING_ULINEAR_LE:
- case AUDIO_ENCODING_ULINEAR_BE:
- enc_ulinear_8(fd, enc, 2, rate);
- break;
- case AUDIO_ENCODING_SLINEAR:
- case AUDIO_ENCODING_SLINEAR_LE:
- case AUDIO_ENCODING_SLINEAR_BE:
- enc_slinear_8(fd, enc, 2, rate);
- break;
- case AUDIO_ENCODING_ADPCM:
- enc_adpcm_8(fd, enc, 2, rate);
- break;
- default:
- skipped = 1;
- }
- }
-
- if (enc->precision == 16) {
- switch (enc->encoding) {
- case AUDIO_ENCODING_ULINEAR_LE:
- enc_ulinear_16(fd, enc, 2, LITTLE_ENDIAN, rate);
- break;
- case AUDIO_ENCODING_ULINEAR_BE:
- enc_ulinear_16(fd, enc, 2, BIG_ENDIAN, rate);
- break;
- case AUDIO_ENCODING_SLINEAR_LE:
- enc_slinear_16(fd, enc, 2, LITTLE_ENDIAN, rate);
- break;
- case AUDIO_ENCODING_SLINEAR_BE:
- enc_slinear_16(fd, enc, 2, BIG_ENDIAN, rate);
- break;
- default:
- skipped = 1;
- }
- }
-
- if (skipped)
- printf("[skip]");
-}
-
-void
-enc_ulinear_8(int fd, audio_encoding_t *enc, int chans, int rate)
-{
- audio_info_t inf;
- struct ausrate rt;
- u_int8_t *samples = NULL, *p;
- int i, j;
-
- AUDIO_INITINFO(&inf);
- inf.play.precision = enc->precision;
- inf.play.encoding = enc->encoding;
- inf.play.channels = chans;
- inf.play.sample_rate = rate;;
-
- if (ioctl(fd, AUDIO_SETINFO, &inf) == -1) {
- printf("[%s]", strerror(errno));
- goto out;
- }
-
- if (ioctl(fd, AUDIO_GETINFO, &inf) == -1) {
- printf("[getinfo: %s]", strerror(errno));
- goto out;
- }
- rt.r_rate = inf.play.sample_rate;
- rt.s_rate = inf.play.sample_rate;
- rt.bps = 1 * chans;
- rt.bytes = inf.play.sample_rate * chans * PLAYSECS;
-
- samples = (u_int8_t *)malloc(inf.play.sample_rate * chans);
- if (samples == NULL) {
- warn("malloc");
- goto out;
- }
-
- for (i = 0, p = samples; i < inf.play.sample_rate; i++) {
- float d;
- u_int8_t v;
-
- d = 127.0 * sinf(((float)i / (float)inf.play.sample_rate) *
- (2 * M_PI * playfreq));
- d = rintf(d + 127.0);
- v = d;
-
- for (j = 0; j < chans; j++) {
- *p = v;
- p++;
- }
- }
-
- mark_time(&rt.tv_begin);
- for (i = 0; i < PLAYSECS; i++)
- write(fd, samples, inf.play.sample_rate * chans);
- audio_wait(fd);
- mark_time(&rt.tv_end);
- check_srate(&rt);
-
-out:
- if (samples != NULL)
- free(samples);
-}
-
-void
-enc_slinear_8(int fd, audio_encoding_t *enc, int chans, int rate)
-{
- audio_info_t inf;
- struct ausrate rt;
- int8_t *samples = NULL, *p;
- int i, j;
-
- AUDIO_INITINFO(&inf);
- inf.play.precision = enc->precision;
- inf.play.encoding = enc->encoding;
- inf.play.channels = chans;
- inf.play.sample_rate = rate;;
-
- if (ioctl(fd, AUDIO_SETINFO, &inf) == -1) {
- printf("[%s]", strerror(errno));
- goto out;
- }
-
- if (ioctl(fd, AUDIO_GETINFO, &inf) == -1) {
- printf("[getinfo: %s]", strerror(errno));
- goto out;
- }
- rt.r_rate = inf.play.sample_rate;
- rt.s_rate = inf.play.sample_rate;
- rt.bps = 1 * chans;
- rt.bytes = inf.play.sample_rate * chans * PLAYSECS;
-
- samples = (int8_t *)malloc(inf.play.sample_rate * chans);
- if (samples == NULL) {
- warn("malloc");
- goto out;
- }
-
- for (i = 0, p = samples; i < inf.play.sample_rate; i++) {
- float d;
- int8_t v;
-
- d = 127.0 * sinf(((float)i / (float)inf.play.sample_rate) *
- (2 * M_PI * playfreq));
- d = rintf(d);
- v = d;
-
- for (j = 0; j < chans; j++) {
- *p = v;
- p++;
- }
- }
-
- mark_time(&rt.tv_begin);
- for (i = 0; i < PLAYSECS; i++)
- write(fd, samples, inf.play.sample_rate * chans);
- audio_wait(fd);
- mark_time(&rt.tv_end);
- check_srate(&rt);
-
-out:
- if (samples != NULL)
- free(samples);
-}
-
-void
-enc_slinear_16(int fd, audio_encoding_t *enc, int chans, int order, int rate)
-{
- audio_info_t inf;
- struct ausrate rt;
- u_int8_t *samples = NULL, *p;
- int i, j;
-
- AUDIO_INITINFO(&inf);
- inf.play.precision = enc->precision;
- inf.play.encoding = enc->encoding;
- inf.play.channels = chans;
- inf.play.sample_rate = rate;;
-
- if (ioctl(fd, AUDIO_SETINFO, &inf) == -1) {
- printf("[%s]", strerror(errno));
- goto out;
- }
-
- if (ioctl(fd, AUDIO_GETINFO, &inf) == -1) {
- printf("[getinfo: %s]", strerror(errno));
- goto out;
- }
- rt.r_rate = inf.play.sample_rate;
- rt.s_rate = inf.play.sample_rate;
- rt.bps = 2 * chans;
- rt.bytes = 2 * inf.play.sample_rate * chans * PLAYSECS;
-
- samples = (int8_t *)malloc(inf.play.sample_rate * chans * 2);
- if (samples == NULL) {
- warn("malloc");
- goto out;
- }
-
- for (i = 0, p = samples; i < inf.play.sample_rate; i++) {
- float d;
- int16_t v;
-
- d = 32767.0 * sinf(((float)i / (float)inf.play.sample_rate) *
- (2 * M_PI * playfreq));
- d = rintf(d);
- v = d;
-
- for (j = 0; j < chans; j++) {
- if (order == LITTLE_ENDIAN) {
- *p = (v & 0x00ff) >> 0;
- p++;
- *p = (v & 0xff00) >> 8;
- p++;
- } else {
- *p = (v & 0xff00) >> 8;
- p++;
- *p = (v & 0x00ff) >> 0;
- p++;
- }
- }
- }
-
- mark_time(&rt.tv_begin);
- for (i = 0; i < PLAYSECS; i++)
- write(fd, samples, inf.play.sample_rate * chans * 2);
- audio_wait(fd);
- mark_time(&rt.tv_end);
- check_srate(&rt);
-
-out:
- if (samples != NULL)
- free(samples);
-}
-
-void
-enc_ulinear_16(int fd, audio_encoding_t *enc, int chans, int order, int rate)
-{
- audio_info_t inf;
- struct ausrate rt;
- u_int8_t *samples = NULL, *p;
- int i, j;
-
- AUDIO_INITINFO(&inf);
- inf.play.precision = enc->precision;
- inf.play.encoding = enc->encoding;
- inf.play.channels = chans;
- inf.play.sample_rate = rate;;
-
- if (ioctl(fd, AUDIO_SETINFO, &inf) == -1) {
- printf("[%s]", strerror(errno));
- goto out;
- }
-
- if (ioctl(fd, AUDIO_GETINFO, &inf) == -1) {
- printf("[getinfo: %s]", strerror(errno));
- goto out;
- }
-
- samples = (u_int8_t *)malloc(inf.play.sample_rate * chans * 2);
- if (samples == NULL) {
- warn("malloc");
- goto out;
- }
- rt.r_rate = inf.play.sample_rate;
- rt.s_rate = inf.play.sample_rate;
- rt.bps = 2 * chans;
- rt.bytes = 2 * inf.play.sample_rate * chans * PLAYSECS;
-
- for (i = 0, p = samples; i < inf.play.sample_rate; i++) {
- float d;
- u_int16_t v;
-
- d = 32767.0 * sinf(((float)i / (float)inf.play.sample_rate) *
- (2 * M_PI * playfreq));
- d = rintf(d + 32767.0);
- v = d;
-
- for (j = 0; j < chans; j++) {
- if (order == LITTLE_ENDIAN) {
- *p = (v >> 0) & 0xff;
- p++;
- *p = (v >> 8) & 0xff;
- p++;
- } else {
- *p = (v >> 8) & 0xff;
- p++;
- *p = (v >> 0) & 0xff;
- p++;
- }
- }
- }
-
- mark_time(&rt.tv_begin);
- for (i = 0; i < PLAYSECS; i++)
- write(fd, samples, inf.play.sample_rate * chans * 2);
- audio_wait(fd);
- mark_time(&rt.tv_end);
- check_srate(&rt);
-
-out:
- if (samples != NULL)
- free(samples);
-}
-
-void
-enc_adpcm_8(int fd, audio_encoding_t *enc, int chans, int rate)
-{
- audio_info_t inf;
- struct adpcm_state adsts;
- int16_t *samples = NULL;
- int i, j;
- char *outbuf = NULL, *sbuf = NULL, *p;
-
- AUDIO_INITINFO(&inf);
- inf.play.precision = enc->precision;
- inf.play.encoding = enc->encoding;
- inf.play.channels = chans;
- inf.play.sample_rate = rate;;
-
- if (ioctl(fd, AUDIO_SETINFO, &inf) == -1) {
- printf("[%s]", strerror(errno));
- goto out;
- }
-
- if (ioctl(fd, AUDIO_GETINFO, &inf) == -1) {
- printf("[getinfo: %s]", strerror(errno));
- goto out;
- }
-
- bzero(&adsts, sizeof(adsts));
-
- samples = (int16_t *)malloc(inf.play.sample_rate * sizeof(*samples));
- if (samples == NULL) {
- warn("malloc");
- goto out;
- }
-
- sbuf = (char *)malloc(inf.play.sample_rate / 2);
- if (sbuf == NULL) {
- warn("malloc");
- goto out;
- }
-
- for (i = 0; i < inf.play.sample_rate; i++) {
- float d;
-
- d = 32767.0 * sinf(((float)i / (float)inf.play.sample_rate) *
- (2 * M_PI * playfreq));
- samples[i] = rintf(d);
- }
-
- outbuf = (char *)malloc((inf.play.sample_rate / 2) * chans);
- if (outbuf == NULL) {
- warn("malloc");
- goto out;
- }
-
- for (i = 0; i < PLAYSECS; i++) {
- adpcm_coder(samples, sbuf, inf.play.sample_rate, &adsts);
-
- for (i = 0, p = outbuf; i < inf.play.sample_rate / 2; i++) {
- for (j = 0; j < chans; j++, p++) {
- *p = sbuf[i];
- }
- }
-
- write(fd, outbuf, (inf.play.sample_rate / 2) * chans);
- }
- audio_wait(fd);
-
-out:
- if (samples != NULL)
- free(samples);
- if (outbuf != NULL)
- free(outbuf);
- if (sbuf != NULL)
- free(sbuf);
-}
-
-void
-enc_ulaw_8(int fd, audio_encoding_t *enc, int chans, int rate)
-{
- audio_info_t inf;
- int16_t *samples = NULL;
- int i, j;
- u_int8_t *outbuf = NULL, *p;
- struct ausrate rt;
-
- AUDIO_INITINFO(&inf);
- inf.play.precision = enc->precision;
- inf.play.encoding = enc->encoding;
- inf.play.channels = chans;
- inf.play.sample_rate = rate;;
-
- if (ioctl(fd, AUDIO_SETINFO, &inf) == -1) {
- printf("[%s]", strerror(errno));
- goto out;
- }
-
- if (ioctl(fd, AUDIO_GETINFO, &inf) == -1) {
- printf("[getinfo: %s]", strerror(errno));
- goto out;
- }
- rt.r_rate = inf.play.sample_rate;
- rt.s_rate = inf.play.sample_rate;
- rt.bps = 1 * chans;
- rt.bytes = inf.play.sample_rate * chans * PLAYSECS;
-
- samples = (int16_t *)calloc(inf.play.sample_rate, sizeof(*samples));
- if (samples == NULL) {
- warn("malloc");
- goto out;
- }
-
- outbuf = (u_int8_t *)malloc(inf.play.sample_rate * chans);
- if (outbuf == NULL) {
- warn("malloc");
- goto out;
- }
-
- for (i = 0; i < inf.play.sample_rate; i++) {
- float x;
-
- x = 32765.0 * sinf(((float)i / (float)inf.play.sample_rate) *
- (2 * M_PI * playfreq));
- samples[i] = x;
- }
-
- for (i = 0, p = outbuf; i < inf.play.sample_rate; i++) {
- for (j = 0; j < chans; j++) {
- *p = linear2ulaw(samples[i]);
- p++;
- }
- }
-
- mark_time(&rt.tv_begin);
- for (i = 0; i < PLAYSECS; i++) {
- write(fd, outbuf, inf.play.sample_rate * chans);
- }
- audio_wait(fd);
- mark_time(&rt.tv_end);
- check_srate(&rt);
-
-out:
- if (samples != NULL)
- free(samples);
- if (outbuf != NULL)
- free(outbuf);
-}
-
-void
-enc_alaw_8(int fd, audio_encoding_t *enc, int chans, int rate)
-{
- audio_info_t inf;
- struct ausrate rt;
- int16_t *samples = NULL;
- int i, j;
- u_int8_t *outbuf = NULL, *p;
-
- AUDIO_INITINFO(&inf);
- inf.play.precision = enc->precision;
- inf.play.encoding = enc->encoding;
- inf.play.channels = chans;
- inf.play.sample_rate = rate;;
-
- if (ioctl(fd, AUDIO_SETINFO, &inf) == -1) {
- printf("[%s]", strerror(errno));
- goto out;
- }
-
- if (ioctl(fd, AUDIO_GETINFO, &inf) == -1) {
- printf("[getinfo: %s]", strerror(errno));
- goto out;
- }
- rt.r_rate = inf.play.sample_rate;
- rt.s_rate = inf.play.sample_rate;
- rt.bps = 1* chans;
- rt.bytes = inf.play.sample_rate * chans * PLAYSECS;
-
- samples = (int16_t *)calloc(inf.play.sample_rate, sizeof(*samples));
- if (samples == NULL) {
- warn("malloc");
- goto out;
- }
-
- outbuf = (u_int8_t *)malloc(inf.play.sample_rate * chans);
- if (outbuf == NULL) {
- warn("malloc");
- goto out;
- }
-
- for (i = 0; i < inf.play.sample_rate; i++) {
- float x;
-
- x = 32767.0 * sinf(((float)i / (float)inf.play.sample_rate) *
- (2 * M_PI * playfreq));
- samples[i] = x;
- }
-
- for (i = 0, p = outbuf; i < inf.play.sample_rate; i++) {
- for (j = 0; j < chans; j++) {
- *p = linear2alaw(samples[i]);
- p++;
- }
- }
-
- mark_time(&rt.tv_begin);
- for (i = 0; i < PLAYSECS; i++) {
- write(fd, outbuf, inf.play.sample_rate * chans);
- }
- audio_wait(fd);
- mark_time(&rt.tv_end);
- check_srate(&rt);
-
-
-out:
- if (samples != NULL)
- free(samples);
- if (outbuf != NULL)
- free(outbuf);
-}
-
-void
-audio_wait(int fd)
-{
- if (ioctl(fd, AUDIO_DRAIN, NULL) == -1)
- warn("drain");
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 22:51:17 +0000