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alsa-utils/speaker-test/speaker-test.c
James Courtier-Dutton 6304ad4634 Correct buffer size choosing.
2005-08-13 16:53:39 +00:00

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/*
* Copyright (C) 2000-2004 James Courtier-Dutton
* Copyright (C) 2005 Nathan Hurst
*
* This file is part of the speaker-test tool.
*
* This small program sends a simple sinusoidal wave to your speakers.
*
* speaker-test is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* speaker-test is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
*
* Main program by James Courtier-Dutton (including some source code fragments from the alsa project.)
* Some cleanup from Daniel Caujolle-Bert <segfault@club-internet.fr>
* Pink noise option added Nathan Hurst,
* based on generator by Phil Burk (pink.c)
*
* Changelog:
* 0.0.8 Added support for pink noise output.
* Changelog:
* 0.0.7 Added support for more than 6 channels.
* Changelog:
* 0.0.6 Added support for different sample formats.
*
* $Id: speaker_test.c,v 1.00 2003/11/26 19:43:38 jcdutton Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sched.h>
#include <errno.h>
#include <getopt.h>
#include <inttypes.h>
#define ALSA_PCM_NEW_HW_PARAMS_API
#define ALSA_PCM_NEW_SW_PARAMS_API
#include <alsa/asoundlib.h>
#include <sys/time.h>
#include <math.h>
#include "pink.h"
#include "aconfig.h"
#include "gettext.h"
static char *device = "plughw:0,0"; /* playback device */
static snd_pcm_format_t format = SND_PCM_FORMAT_S16; /* sample format */
static unsigned int rate = 48000; /* stream rate */
static unsigned int channels = 1; /* count of channels */
static unsigned int speaker = 0; /* count of channels */
static unsigned int buffer_time = 500000; /* ring buffer length in us */
static unsigned int period_time = 100000; /* period time in us */
#define PERIODS 4
static double freq = 440; /* sinusoidal wave frequency in Hz */
static int test_type = 1; /* Test type. 1 = noise, 2 = sine wave */
static pink_noise_t pink;
static snd_output_t *output = NULL;
static snd_pcm_uframes_t buffer_size;
static snd_pcm_uframes_t period_size;
static const char *channel_name[] = {
N_("Front Left"),
N_("Front Right"),
N_("Rear Left"),
N_("Rear Right"),
N_("Center"),
N_("LFE"),
N_("Side Left"),
N_("Side Right"),
N_("8"),
N_("9"),
N_("10"),
N_("11"),
N_("12"),
N_("13"),
N_("14"),
N_("15"),
N_("16")
};
static const int channels4[] = {
0,
1,
3,
2
};
static const int channels6[] = {
0,
4,
1,
3,
2,
5
};
static const int channels8[] = {
0,
4,
1,
7,
3,
2,
6,
5
};
static void generate_sine(uint8_t *frames, int channel, int count, double *_phase) {
double phase = *_phase;
double max_phase = 1.0 / freq;
double step = 1.0 / (double)rate;
double res;
int chn;
int32_t ires;
int8_t *samp8 = (int8_t*) frames;
int16_t *samp16 = (int16_t*) frames;
int32_t *samp32 = (int32_t*) frames;
int sample_size_bits = snd_pcm_format_width(format);
while (count-- > 0) {
//res = sin((phase * 2 * M_PI) / max_phase - M_PI) * 32767;
//res = sin((phase * 2 * M_PI) / max_phase - M_PI) * 32767;
res = (sin((phase * 2 * M_PI) / max_phase - M_PI)) * 0x03fffffff; /* Don't use MAX volume */
//if (res > 0) res = 10000;
//if (res < 0) res = -10000;
/* printf("%e\n",res); */
ires = res;
//ires = ((16 - (count & 0xf)) <<24);
//ires = 0;
for(chn=0;chn<channels;chn++) {
if (sample_size_bits == 8) {
if (chn==channel) {
*samp8++ = ires >> 24;
//*samp8++ = 0x12;
} else {
*samp8++ = 0;
}
} else if (sample_size_bits == 16) {
if (chn==channel) {
*samp16++ = ires >>16;
//*samp16++ = 0x1234;
} else {
//*samp16++ = (ires >>16)+1;
*samp16++ = 0;
}
} else if (sample_size_bits == 32) {
if (chn==channel) {
*samp32++ = ires;
//*samp32++ = 0xF2345678;
//printf("res=%lf, ires=%d 0x%x, samp32=0x%x\n",res,ires, ires, samp32[-1]);
} else {
//*samp32++ = ires+0x10000;
//*samp32++ = ires;
*samp32++ = 0;
}
}
}
phase += step;
if (phase >= max_phase)
phase -= max_phase;
}
*_phase = phase;
}
/* Pink noise is a better test than sine wave because we can tell
* where pink noise is coming from more easily that a sine wave.
*/
static void generate_pink_noise( uint8_t *frames, int channel, int count) {
double res;
int chn;
int32_t ires;
int8_t *samp8 = (int8_t*) frames;
int16_t *samp16 = (int16_t*) frames;
int32_t *samp32 = (int32_t*) frames;
int sample_size_bits = snd_pcm_format_width(format);
while (count-- > 0) {
for(chn=0;chn<channels;chn++) {
if (sample_size_bits == 8) {
if (chn==channel) {
res = generate_pink_noise_sample(&pink) * 0x03fffffff; /* Don't use MAX volume */
ires = res;
*samp8++ = ires >> 24;
} else {
*samp8++ = 0;
}
} else if (sample_size_bits == 16) {
if (chn==channel) {
res = generate_pink_noise_sample(&pink) * 0x03fffffff; /* Don't use MAX volume */
ires = res;
*samp16++ = ires >>16;
} else {
*samp16++ = 0;
}
} else if (sample_size_bits == 32) {
if (chn==channel) {
res = generate_pink_noise_sample(&pink) * 0x03fffffff; /* Don't use MAX volume */
ires = res;
*samp32++ = ires;
} else {
*samp32++ = 0;
}
}
}
}
}
static int set_hwparams(snd_pcm_t *handle, snd_pcm_hw_params_t *params, snd_pcm_access_t access) {
unsigned int rrate;
int err, dir;
snd_pcm_uframes_t period_size_min;
snd_pcm_uframes_t period_size_max;
snd_pcm_uframes_t buffer_size_min;
snd_pcm_uframes_t buffer_size_max;
snd_pcm_uframes_t buffer_time_to_size;
/* choose all parameters */
err = snd_pcm_hw_params_any(handle, params);
if (err < 0) {
printf(_("Broken configuration for playback: no configurations available: %s\n"), snd_strerror(err));
return err;
}
/* set the interleaved read/write format */
err = snd_pcm_hw_params_set_access(handle, params, access);
if (err < 0) {
printf(_("Access type not available for playback: %s\n"), snd_strerror(err));
return err;
}
/* set the sample format */
err = snd_pcm_hw_params_set_format(handle, params, format);
if (err < 0) {
printf(_("Sample format not available for playback: %s\n"), snd_strerror(err));
return err;
}
/* set the count of channels */
err = snd_pcm_hw_params_set_channels(handle, params, channels);
if (err < 0) {
printf(_("Channels count (%i) not available for playbacks: %s\n"), channels, snd_strerror(err));
return err;
}
/* set the stream rate */
rrate = rate;
err = snd_pcm_hw_params_set_rate(handle, params, rate, 0);
if (err < 0) {
printf(_("Rate %iHz not available for playback: %s\n"), rate, snd_strerror(err));
return err;
}
if (rrate != rate) {
printf(_("Rate doesn't match (requested %iHz, get %iHz, err %d)\n"), rate, rrate, err);
return -EINVAL;
}
printf(_("Rate set to %iHz (requested %iHz)\n"), rrate, rate);
/* set the buffer time */
buffer_time_to_size = ( (snd_pcm_uframes_t)buffer_time * rate) / 1000000;
err = snd_pcm_hw_params_get_buffer_size_min(params, &buffer_size_min);
err = snd_pcm_hw_params_get_buffer_size_max(params, &buffer_size_max);
dir=0;
err = snd_pcm_hw_params_get_period_size_min(params, &period_size_min,&dir);
dir=0;
err = snd_pcm_hw_params_get_period_size_max(params, &period_size_max,&dir);
printf(_("Buffer size range from %lu to %lu\n"),buffer_size_min, buffer_size_max);
printf(_("Period size range from %lu to %lu\n"),period_size_min, period_size_max);
printf(_("Periods = %d\n"), PERIODS);
printf(_("Buffer time size %lu\n"),buffer_time_to_size);
buffer_size = buffer_time_to_size;
//buffer_size=8096;
//buffer_size=15052;
buffer_size=buffer_size_max;
if (buffer_size_max < buffer_size) buffer_size = buffer_size_max;
if (buffer_size_min > buffer_size) buffer_size = buffer_size_min;
//buffer_size=0x800;
period_size = buffer_size/PERIODS;
buffer_size = period_size*PERIODS;
//period_size = 510;
printf(_("To choose buffer_size = %lu\n"),buffer_size);
printf(_("To choose period_size = %lu\n"),period_size);
dir=0;
err = snd_pcm_hw_params_set_period_size_near(handle, params, &period_size, &dir);
if (err < 0) {
printf(_("Unable to set period size %lu for playback: %s\n"), period_size, snd_strerror(err));
return err;
}
dir=0;
err = snd_pcm_hw_params_get_period_size(params, &period_size, &dir);
if (err < 0) printf(_("Unable to get period size for playback: %s\n"), snd_strerror(err));
dir=0;
err = snd_pcm_hw_params_set_buffer_size_near(handle, params, &buffer_size);
if (err < 0) {
printf(_("Unable to set buffer size %lu for playback: %s\n"), buffer_size, snd_strerror(err));
return err;
}
err = snd_pcm_hw_params_get_buffer_size(params, &buffer_size);
printf(_("was set period_size = %lu\n"),period_size);
printf(_("was set buffer_size = %lu\n"),buffer_size);
if (2*period_size > buffer_size) {
printf(_("buffer to small, could not use\n"));
return err;
}
/* write the parameters to device */
err = snd_pcm_hw_params(handle, params);
if (err < 0) {
printf(_("Unable to set hw params for playback: %s\n"), snd_strerror(err));
return err;
}
return 0;
}
static int set_swparams(snd_pcm_t *handle, snd_pcm_sw_params_t *swparams) {
int err;
/* get the current swparams */
err = snd_pcm_sw_params_current(handle, swparams);
if (err < 0) {
printf(_("Unable to determine current swparams for playback: %s\n"), snd_strerror(err));
return err;
}
/* start the transfer when a buffer is full */
err = snd_pcm_sw_params_set_start_threshold(handle, swparams, buffer_size);
if (err < 0) {
printf(_("Unable to set start threshold mode for playback: %s\n"), snd_strerror(err));
return err;
}
/* allow the transfer when at least period_size frames can be processed */
err = snd_pcm_sw_params_set_avail_min(handle, swparams, period_size);
if (err < 0) {
printf(_("Unable to set avail min for playback: %s\n"), snd_strerror(err));
return err;
}
/* align all transfers to 1 sample */
err = snd_pcm_sw_params_set_xfer_align(handle, swparams, 1);
if (err < 0) {
printf(_("Unable to set transfer align for playback: %s\n"), snd_strerror(err));
return err;
}
/* write the parameters to the playback device */
err = snd_pcm_sw_params(handle, swparams);
if (err < 0) {
printf(_("Unable to set sw params for playback: %s\n"), snd_strerror(err));
return err;
}
return 0;
}
/*
* Underrun and suspend recovery
*/
static int xrun_recovery(snd_pcm_t *handle, int err) {
if (err == -EPIPE) { /* under-run */
err = snd_pcm_prepare(handle);
if (err < 0)
printf(_("Can't recovery from underrun, prepare failed: %s\n"), snd_strerror(err));
return 0;
}
else if (err == -ESTRPIPE) {
while ((err = snd_pcm_resume(handle)) == -EAGAIN)
sleep(1); /* wait until the suspend flag is released */
if (err < 0) {
err = snd_pcm_prepare(handle);
if (err < 0)
printf(_("Can't recovery from suspend, prepare failed: %s\n"), snd_strerror(err));
}
return 0;
}
return err;
}
/*
* Transfer method - write only
*/
static int write_loop(snd_pcm_t *handle, int channel, int periods, uint8_t *frames) {
double phase = 0;
uint8_t *ptr;
int err, cptr, n;
int bytes_per_frame=snd_pcm_frames_to_bytes(handle, 1);
for(n = 0; n < periods; n++) {
if(test_type==1)
generate_pink_noise(frames, channel, period_size);
else
generate_sine(frames, channel, period_size, &phase);
ptr = frames;
cptr = period_size;
while (cptr > 0) {
err = snd_pcm_writei(handle, ptr, cptr);
if (err == -EAGAIN)
continue;
if (err < 0) {
printf(_("Write error: %d,%s\n"), err, snd_strerror(err));
if (xrun_recovery(handle, err) < 0) {
printf(_("xrun_recovery failed: %d,%s\n"), err, snd_strerror(err));
return -1;
}
break; /* skip one period */
}
ptr += (err * bytes_per_frame);
cptr -= err;
}
}
return 0;
}
static void help(void)
{
int k;
printf(
_("Usage: speaker-test [OPTION]... \n"
"-h,--help help\n"
"-D,--device playback device\n"
"-r,--rate stream rate in Hz\n"
"-c,--channels count of channels in stream\n"
"-f,--frequency sine wave frequency in Hz\n"
"-F,--format sample format\n"
"-b,--buffer ring buffer size in us\n"
"-p,--period period size in us\n"
"-t,--test 1=use pink noise, 2=use sine wave\n"
"-s,--speaker single speaker test. Values 1=Left or 2=right\n"
"\n"));
#if 1
printf(_("Recognized sample formats are:"));
for (k = 0; k < SND_PCM_FORMAT_LAST; ++k) {
const char *s = snd_pcm_format_name(k);
if (s)
printf(" %s", s);
}
printf("\n\n");
#endif
}
int main(int argc, char *argv[]) {
snd_pcm_t *handle;
int err, morehelp;
snd_pcm_hw_params_t *hwparams;
snd_pcm_sw_params_t *swparams;
uint8_t *frames;
int chn;
double time1,time2,time3;
struct timeval tv1,tv2;
struct option long_option[] = {
{"help", 0, NULL, 'h'},
{"device", 1, NULL, 'D'},
{"rate", 1, NULL, 'r'},
{"channels", 1, NULL, 'c'},
{"frequency", 1, NULL, 'f'},
{"format", 1, NULL, 'F'},
{"buffer", 1, NULL, 'b'},
{"period", 1, NULL, 'p'},
{"test", 1, NULL, 't'},
{"speaker", 1, NULL, 's'},
{NULL, 0, NULL, 0 },
};
setlocale(LC_ALL, "");
textdomain(PACKAGE);
snd_pcm_hw_params_alloca(&hwparams);
snd_pcm_sw_params_alloca(&swparams);
morehelp = 0;
printf("\nspeaker-test %s\n\n", SPEAKER_TEST_VERSION);
while (1) {
int c;
if ((c = getopt_long(argc, argv, "hD:r:c:f:F:b:p:t:s:", long_option, NULL)) < 0)
break;
switch (c) {
case 'h':
morehelp++;
break;
case 'D':
device = strdup(optarg);
break;
case 'F':
format = snd_pcm_format_value(optarg);
break;
case 'r':
rate = atoi(optarg);
rate = rate < 4000 ? 4000 : rate;
rate = rate > 196000 ? 196000 : rate;
break;
case 'c':
channels = atoi(optarg);
channels = channels < 1 ? 1 : channels;
channels = channels > 1024 ? 1024 : channels;
break;
case 'f':
freq = atoi(optarg);
freq = freq < 50 ? 50 : freq;
freq = freq > 5000 ? 5000 : freq;
break;
case 'b':
buffer_time = atoi(optarg);
buffer_time = buffer_time < 1000 ? 1000 : buffer_time;
buffer_time = buffer_time > 1000000 ? 1000000 : buffer_time;
break;
case 'p':
period_time = atoi(optarg);
period_time = period_time < 1000 ? 1000 : period_time;
period_time = period_time > 1000000 ? 1000000 : period_time;
break;
case 't':
test_type = atoi(optarg);
test_type = test_type < 1 ? 1 : test_type;
test_type = test_type > 2 ? 2 : test_type;
break;
case 's':
speaker = atoi(optarg);
speaker = speaker < 1 ? 0 : speaker;
speaker = speaker > channels ? 0 : speaker;
if (speaker==0) {
printf(_("Invalid parameter for -s option.\n"));
exit(EXIT_FAILURE);
}
break;
default:
printf(_("Unknown option '%c'\n"), c);
exit(EXIT_FAILURE);
break;
}
}
if (morehelp) {
help();
exit(EXIT_SUCCESS);
}
err = snd_output_stdio_attach(&output, stdout, 0);
if (err < 0) {
printf(_("Output failed: %s\n"), snd_strerror(err));
exit(EXIT_FAILURE);
}
printf(_("Playback device is %s\n"), device);
printf(_("Stream parameters are %iHz, %s, %i channels\n"), rate, snd_pcm_format_name(format), channels);
if(test_type==1)
printf(_("Using 16 octaves of pink noise\n"));
else
printf(_("Sine wave rate is %.4fHz\n"), freq);
loop:
while ((err = snd_pcm_open(&handle, device, SND_PCM_STREAM_PLAYBACK, 0)) < 0) {
printf(_("Playback open error: %d,%s\n"), err,snd_strerror(err));
sleep(1);
}
if ((err = set_hwparams(handle, hwparams, SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) {
printf(_("Setting of hwparams failed: %s\n"), snd_strerror(err));
snd_pcm_close(handle);
goto loop;
exit(EXIT_FAILURE);
}
//getchar();
if ((err = set_swparams(handle, swparams)) < 0) {
printf(_("Setting of swparams failed: %s\n"), snd_strerror(err));
snd_pcm_close(handle);
goto loop;
exit(EXIT_FAILURE);
}
frames = malloc((period_size * channels * snd_pcm_format_width(format)) / 8);
initialize_pink_noise( &pink, 16);
if (frames == NULL) {
printf(_("No enough memory\n"));
exit(EXIT_FAILURE);
}
if (speaker==0) {
while (1) {
gettimeofday(&tv1, NULL);
for(chn = 0; chn < channels; chn++) {
int channel=chn;
if (channels == 4) {
channel=channels4[chn];
}
if (channels == 6) {
channel=channels6[chn];
}
if (channels == 8) {
channel=channels8[chn];
}
printf(" %d - %s\n", channel, gettext(channel_name[channel]));
err = write_loop(handle, channel, ((rate*3)/period_size), frames);
//err = write_loop(handle, 255, ((rate*3)/period_size), frames);
if (err < 0) {
printf(_("Transfer failed: %s\n"), snd_strerror(err));
free(frames);
snd_pcm_close(handle);
printf(_("Pausing\n"));
goto loop ;
//pause();
//printf("Done Pausing\n");
exit(EXIT_SUCCESS);
goto loop ;
}
}
gettimeofday(&tv2, NULL);
time1 = (double)tv1.tv_sec + ((double)tv1.tv_usec / 1000000.0);
time2 = (double)tv2.tv_sec + ((double)tv2.tv_usec / 1000000.0);
time3 = time2 - time1;
printf(_("Time per period = %lf\n"), time3 );
}
} else {
printf(" - %s\n", gettext(channel_name[speaker-1]));
err = write_loop(handle, speaker-1, ((rate*5)/period_size), frames);
if (err < 0) {
printf(_("Transfer failed: %s\n"), snd_strerror(err));
}
}
free(frames);
snd_pcm_close(handle);
exit(EXIT_SUCCESS);
}
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