/* * Copyright (C) 2000-2004 James Courtier-Dutton * * 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 * * 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 #include #include #include #include #include /* #include "aconfig.h" */ #define ALSA_PCM_NEW_HW_PARAMS_API #define ALSA_PCM_NEW_SW_PARAMS_API #include #include #include 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 snd_output_t *output = NULL; static snd_pcm_uframes_t buffer_size; static snd_pcm_uframes_t period_size; static const char *channel_name[] = { "Front Left" , "Front Right" , "Rear Left" , "Rear Right" , "Center" , "LFE", "Side Left", "Side Right", "8", "9", "10", "11", "12", "13", "14", "15", "16" }; static const int channels4[] = { 0, 1, 3, 2 }; static const int channels6[] = { 0, 4, 1, 3, 2, 5 }; static void generate_sine(signed short *samples, 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*) samples; int16_t *samp16 = (int16_t*) samples; int32_t *samp32 = (int32_t*) samples; 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)) * 0x07ffffff; /* Don't use MAX volume */ //if (res > 0) res = 10000; //if (res < 0) res = -10000; /* printf("%e\n",res); */ ires = res; for(chn=0;chn> 24; //*samp8++ = 0x12; } else { *samp8++ = 0; } } else if (sample_size_bits == 16) { if (chn==channel) { *samp16++ = ires >>16; //*samp16++ = 0x1234; } else { *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++ = 0; } } } phase += step; if (phase >= max_phase) phase -= max_phase; } *_phase = phase; } /* FIXME: Implement, because it is a better test than sine wave * because we can tell where pink noise is coming from more easily that a sine wave */ #if 0 static void generate_pink_noise( snd_pcm_uframes_t offset, int count, double *_phase) { } #endif 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; 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 samples 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, signed short *samples) { double phase = 0; signed short *ptr; int err, cptr, n; for(n = 0; n < periods; n++) { generate_sine(samples, channel, period_size, &phase); ptr = samples; cptr = period_size; while (cptr > 0) { err = snd_pcm_writei(handle, ptr, cptr); if (err == -EAGAIN) continue; if (err < 0) { if (xrun_recovery(handle, err) < 0) { printf("Write error: %d,%s\n", err, snd_strerror(err)); return -1; } break; /* skip one period */ } ptr += (err * channels); 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" "-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; signed short *samples; 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'}, {"speaker", 1, NULL, 's'}, {NULL, 0, NULL, 0 }, }; snd_pcm_hw_params_alloca(&hwparams); snd_pcm_sw_params_alloca(&swparams); morehelp = 0; printf("\nspeaker-test %s\n\n",VERSION); while (1) { int c; if ((c = getopt_long(argc, argv, "hD:r:c:f:F:b:p: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 '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); 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); } samples = malloc((period_size * channels * snd_pcm_format_width(format)) / 8); if (samples == 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]; } printf(" %d - %s\n", channel, channel_name[channel]); err = write_loop(handle, channel, ((rate*3)/period_size), samples); //err = write_loop(handle, 255, ((rate*3)/period_size), samples); if (err < 0) { printf("Transfer failed: %s\n", snd_strerror(err)); free(samples); 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", channel_name[speaker-1]); err = write_loop(handle, speaker-1, ((rate*5)/period_size), samples); if (err < 0) { printf("Transfer failed: %s\n", snd_strerror(err)); } } free(samples); snd_pcm_close(handle); exit(EXIT_SUCCESS); }