audio.c revision 316722
1132718Skan/* 2132718Skan * audio.c - audio interface for reference clock audio drivers 3169689Skan */ 4132718Skan#ifdef HAVE_CONFIG_H 5132718Skan# include <config.h> 6132718Skan#endif 7132718Skan 8132718Skan#if defined(HAVE_SYS_AUDIOIO_H) || defined(HAVE_SUN_AUDIOIO_H) || \ 9132718Skan defined(HAVE_SYS_SOUNDCARD_H) || defined(HAVE_MACHINE_SOUNDCARD_H) 10132718Skan 11132718Skan#include "audio.h" 12132718Skan#include "ntp_stdlib.h" 13132718Skan#include "ntp_syslog.h" 14132718Skan#ifdef HAVE_UNISTD_H 15132718Skan# include <unistd.h> 16132718Skan#endif 17132718Skan#include <stdio.h> 18132718Skan#include "ntp_string.h" 19132718Skan 20132718Skan#ifdef HAVE_SYS_AUDIOIO_H 21132718Skan# include <sys/audioio.h> 22132718Skan#endif /* HAVE_SYS_AUDIOIO_H */ 23132718Skan 24132718Skan#ifdef HAVE_SUN_AUDIOIO_H 25132718Skan# include <sys/ioccom.h> 26132718Skan# include <sun/audioio.h> 27169689Skan#endif /* HAVE_SUN_AUDIOIO_H */ 28169689Skan 29132718Skan#ifdef HAVE_SYS_IOCTL_H 30132718Skan# include <sys/ioctl.h> 31132718Skan#endif /* HAVE_SYS_IOCTL_H */ 32132718Skan 33132718Skan#include <fcntl.h> 34132718Skan 35132718Skan#ifdef HAVE_MACHINE_SOUNDCARD_H 36132718Skan# include <machine/soundcard.h> 37132718Skan# define PCM_STYLE_SOUND 38132718Skan#else 39132718Skan# ifdef HAVE_SYS_SOUNDCARD_H 40132718Skan# include <sys/soundcard.h> 41132718Skan# define PCM_STYLE_SOUND 42132718Skan# endif 43132718Skan#endif 44132718Skan 45132718Skan#ifdef PCM_STYLE_SOUND 46255361Sandrew# include <ctype.h> 47132718Skan#endif 48132718Skan 49132718Skan 50132718Skan/* 51132718Skan * 4.4BSD-Lite switched to an unsigned long ioctl arg. Detect common 52132718Skan * derivatives here, and apply that type. To make the following code 53132718Skan * less verbose we make a proper typedef. 54132718Skan * The joy of IOCTL programming... 55132718Skan */ 56132718Skan# if defined(__FreeBSD__) || defined(__APPLE__) || defined(__NetBSD__) || defined __OpenBSD__ 57132718Skantypedef unsigned long ioctl_arg_T; 58132718Skan#else 59132718Skantypedef int ioctl_arg_T; 60132718Skan#endif 61132718Skan 62169689Skan/* 63169689Skan * Global variables 64132718Skan */ 65132718Skan#ifdef HAVE_SYS_AUDIOIO_H 66132718Skanstatic struct audio_device device; /* audio device ident */ 67132718Skan#endif /* HAVE_SYS_AUDIOIO_H */ 68169689Skan#ifdef PCM_STYLE_SOUND 69132718Skan# define INIT_FILE "/etc/ntp.audio" 70132718Skan 71132718Skanstatic ioctl_arg_T agc = SOUND_MIXER_WRITE_RECLEV; /* or IGAIN or LINE */ 72132718Skanstatic ioctl_arg_T audiomonitor = SOUND_MIXER_WRITE_VOLUME; /* or OGAIN */ 73132718Skanstatic int devmask = 0; 74132718Skanstatic int recmask = 0; 75169689Skanstatic char cf_c_dev[100], cf_i_dev[100], cf_agc[100], cf_monitor[100]; 76169689Skan 77169689Skanstatic const char *m_names[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES; 78169689Skan#else /* not PCM_STYLE_SOUND */ 79169689Skanstatic struct audio_info info; /* audio device info */ 80132718Skan#endif /* not PCM_STYLE_SOUND */ 81169689Skanstatic int ctl_fd; /* audio control file descriptor */ 82169689Skan 83169689Skan#ifdef PCM_STYLE_SOUND 84169689Skanstatic void audio_config_read (int, const char **, const char **); 85132718Skanstatic int mixer_name (const char *, int); 86132718Skan 87132718Skan 88132718Skanint 89169689Skanmixer_name( 90132718Skan const char *m_name, 91169689Skan int m_mask 92132718Skan ) 93169689Skan{ 94169689Skan int i; 95169689Skan 96169689Skan for (i = 0; i < SOUND_MIXER_NRDEVICES; ++i) 97169689Skan if (((1 << i) & m_mask) 98169689Skan && !strcmp(m_names[i], m_name)) 99169689Skan break; 100169689Skan 101169689Skan return (SOUND_MIXER_NRDEVICES == i) 102169689Skan ? -1 103132718Skan : i 104132718Skan ; 105132718Skan} 106169689Skan 107169689Skan 108132718Skan/* 109132718Skan * Check: 110132718Skan * 111132718Skan * /etc/ntp.audio# where # is the unit number 112132718Skan * /etc/ntp.audio.# where # is the unit number 113132718Skan * /etc/ntp.audio 114132718Skan * 115132718Skan * for contents of the form: 116132718Skan * 117132718Skan * idev /dev/input_device 118132718Skan * cdev /dev/control_device 119132718Skan * agc pcm_input_device {igain,line,line1,...} 120132718Skan * monitor pcm_monitor_device {ogain,...} 121169689Skan * 122132718Skan * The device names for the "agc" and "monitor" keywords 123132718Skan * can be found by running either the "mixer" program or the 124132718Skan * util/audio-pcm program. 125132718Skan * 126169689Skan * Great hunks of this subroutine were swiped from refclock_oncore.c 127169689Skan */ 128169689Skanstatic void 129132718Skanaudio_config_read( 130132718Skan int unit, 131132718Skan const char **c_dev, /* Control device */ 132132718Skan const char **i_dev /* input device */ 133132718Skan ) 134169689Skan{ 135169689Skan FILE *fd; 136132718Skan char device[20], line[100], ab[100]; 137132718Skan 138132718Skan snprintf(device, sizeof(device), "%s%d", INIT_FILE, unit); 139132718Skan if ((fd = fopen(device, "r")) == NULL) { 140132718Skan printf("audio_config_read: <%s> NO\n", device); 141132718Skan snprintf(device, sizeof(device), "%s.%d", INIT_FILE, 142132718Skan unit); 143132718Skan if ((fd = fopen(device, "r")) == NULL) { 144132718Skan printf("audio_config_read: <%s> NO\n", device); 145132718Skan snprintf(device, sizeof(device), "%s", 146169689Skan INIT_FILE); 147169689Skan if ((fd = fopen(device, "r")) == NULL) { 148169689Skan printf("audio_config_read: <%s> NO\n", 149169689Skan device); 150169689Skan return; 151169689Skan } 152132718Skan } 153169689Skan } 154169689Skan printf("audio_config_read: reading <%s>\n", device); 155169689Skan while (fgets(line, sizeof line, fd)) { 156169689Skan char *cp, *cc, *ca; 157169689Skan int i; 158169689Skan 159132718Skan /* Remove comments */ 160132718Skan if ((cp = strchr(line, '#'))) 161169689Skan *cp = '\0'; 162169689Skan 163169689Skan /* Remove any trailing spaces */ 164169689Skan for (i = strlen(line); 165169689Skan i > 0 && isascii((unsigned char)line[i - 1]) && isspace((unsigned char)line[i - 1]); 166132718Skan ) 167169689Skan line[--i] = '\0'; 168169689Skan 169132718Skan /* Remove leading space */ 170132718Skan for (cc = line; *cc && isascii((unsigned char)*cc) && isspace((unsigned char)*cc); cc++) 171132718Skan continue; 172132718Skan 173132718Skan /* Stop if nothing left */ 174132718Skan if (!*cc) 175132718Skan continue; 176132718Skan 177169689Skan /* Uppercase the command and find the arg */ 178132718Skan for (ca = cc; *ca; ca++) { 179169689Skan if (isascii((unsigned char)*ca)) { 180132718Skan if (islower((unsigned char)*ca)) { 181132718Skan *ca = toupper((unsigned char)*ca); 182132718Skan } else if (isspace((unsigned char)*ca) || (*ca == '=')) 183132718Skan break; 184169689Skan } 185169689Skan } 186132718Skan 187169689Skan /* Remove space (and possible =) leading the arg */ 188169689Skan for (; *ca && isascii((unsigned char)*ca) && (isspace((unsigned char)*ca) || (*ca == '=')); ca++) 189169689Skan continue; 190169689Skan 191169689Skan if (!strncmp(cc, "IDEV", 4) && 192132718Skan 1 == sscanf(ca, "%99s", ab)) { 193132718Skan strlcpy(cf_i_dev, ab, sizeof(cf_i_dev)); 194132718Skan printf("idev <%s>\n", ab); 195132718Skan } else if (!strncmp(cc, "CDEV", 4) && 196132718Skan 1 == sscanf(ca, "%99s", ab)) { 197169689Skan strlcpy(cf_c_dev, ab, sizeof(cf_c_dev)); 198169689Skan printf("cdev <%s>\n", ab); 199169689Skan } else if (!strncmp(cc, "AGC", 3) && 200169689Skan 1 == sscanf(ca, "%99s", ab)) { 201132718Skan strlcpy(cf_agc, ab, sizeof(cf_agc)); 202132718Skan printf("agc <%s> %d\n", ab, i); 203132718Skan } else if (!strncmp(cc, "MONITOR", 7) && 204169689Skan 1 == sscanf(ca, "%99s", ab)) { 205169689Skan strlcpy(cf_monitor, ab, sizeof(cf_monitor)); 206169689Skan printf("monitor <%s> %d\n", ab, mixer_name(ab, -1)); 207169689Skan } 208169689Skan } 209169689Skan fclose(fd); 210169689Skan return; 211169689Skan} 212169689Skan#endif /* PCM_STYLE_SOUND */ 213169689Skan 214132718Skan/* 215169689Skan * audio_init - open and initialize audio device 216132718Skan * 217132718Skan * This code works with SunOS 4.x, Solaris 2.x, and PCM; however, it is 218132718Skan * believed generic and applicable to other systems with a minor twid 219169689Skan * or two. All it does is open the device, set the buffer size (Solaris 220169689Skan * only), preset the gain and set the input port. It assumes that the 221132718Skan * codec sample rate (8000 Hz), precision (8 bits), number of channels 222132718Skan * (1) and encoding (ITU-T G.711 mu-law companded) have been set by 223132718Skan * default. 224169689Skan */ 225169689Skanint 226169689Skanaudio_init( 227169689Skan const char *dname, /* device name */ 228169689Skan int bufsiz, /* buffer size */ 229169689Skan int unit /* device unit (0-3) */ 230169689Skan ) 231169689Skan{ 232169689Skan#ifdef PCM_STYLE_SOUND 233169689Skan# define ACTL_DEV "/dev/mixer%d" 234169689Skan char actl_dev[30]; 235169689Skan# ifdef HAVE_STRUCT_SND_SIZE 236169689Skan struct snd_size s_size; 237132718Skan# endif 238132718Skan# ifdef AIOGFMT 239132718Skan snd_chan_param s_c_p; 240132718Skan# endif 241132718Skan#endif 242132718Skan int fd; 243132718Skan int rval; 244132718Skan const char *actl = 245132718Skan#ifdef PCM_STYLE_SOUND 246132718Skan actl_dev 247132718Skan#else 248132718Skan "/dev/audioctl" 249132718Skan#endif 250132718Skan ; 251132718Skan 252132718Skan#ifdef PCM_STYLE_SOUND 253132718Skan snprintf(actl_dev, sizeof(actl_dev), ACTL_DEV, unit); 254132718Skan 255132718Skan audio_config_read(unit, &actl, &dname); 256132718Skan /* If we have values for cf_c_dev or cf_i_dev, use them. */ 257132718Skan if (*cf_c_dev) 258132718Skan actl = cf_c_dev; 259132718Skan if (*cf_i_dev) 260132718Skan dname = cf_i_dev; 261132718Skan#endif 262132718Skan 263132718Skan /* 264132718Skan * Open audio device 265132718Skan */ 266132718Skan fd = open(dname, O_RDWR | O_NONBLOCK, 0777); 267132718Skan if (fd < 0) { 268132718Skan msyslog(LOG_ERR, "audio_init: %s %m", dname); 269132718Skan return (fd); 270132718Skan } 271132718Skan 272169689Skan /* 273169689Skan * Open audio control device. 274169689Skan */ 275169689Skan ctl_fd = open(actl, O_RDWR); 276132718Skan if (ctl_fd < 0) { 277132718Skan msyslog(LOG_ERR, "audio_init: invalid control device <%s>", 278132718Skan actl); 279169689Skan close(fd); 280169689Skan return(ctl_fd); 281132718Skan } 282132718Skan 283132718Skan /* 284132718Skan * Set audio device parameters. 285132718Skan */ 286132718Skan#ifdef PCM_STYLE_SOUND 287132718Skan printf("audio_init: <%s> bufsiz %d\n", dname, bufsiz); 288132718Skan rval = fd; 289132718Skan 290132718Skan# ifdef HAVE_STRUCT_SND_SIZE 291132718Skan if (ioctl(fd, AIOGSIZE, &s_size) == -1) 292132718Skan printf("audio_init: AIOGSIZE: %s\n", strerror(errno)); 293132718Skan else 294132718Skan printf("audio_init: orig: play_size %d, rec_size %d\n", 295132718Skan s_size.play_size, s_size.rec_size); 296132718Skan 297132718Skan s_size.play_size = s_size.rec_size = bufsiz; 298132718Skan printf("audio_init: want: play_size %d, rec_size %d\n", 299132718Skan s_size.play_size, s_size.rec_size); 300132718Skan 301132718Skan if (ioctl(fd, AIOSSIZE, &s_size) == -1) 302132718Skan printf("audio_init: AIOSSIZE: %s\n", strerror(errno)); 303132718Skan else 304132718Skan printf("audio_init: set: play_size %d, rec_size %d\n", 305132718Skan s_size.play_size, s_size.rec_size); 306132718Skan# endif /* HAVE_STRUCT_SND_SIZE */ 307132718Skan 308132718Skan# ifdef SNDCTL_DSP_SETFRAGMENT 309169689Skan { 310132718Skan int tmp = (16 << 16) + 6; /* 16 fragments, each 2^6 bytes */ 311132718Skan if (ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &tmp) == -1) 312169689Skan printf("audio_init: SNDCTL_DSP_SETFRAGMENT: %s\n", 313132718Skan strerror(errno)); 314169689Skan } 315169689Skan# endif /* SNDCTL_DSP_SETFRAGMENT */ 316132718Skan 317132718Skan# ifdef AIOGFMT 318169689Skan if (ioctl(fd, AIOGFMT, &s_c_p) == -1) 319169689Skan printf("audio_init: AIOGFMT: %s\n", strerror(errno)); 320169689Skan else 321169689Skan printf("audio_init: play_rate %lu, rec_rate %lu, play_format %#lx, rec_format %#lx\n", 322169689Skan s_c_p.play_rate, s_c_p.rec_rate, s_c_p.play_format, s_c_p.rec_format); 323169689Skan# endif 324169689Skan 325169689Skan /* Grab the device and record masks */ 326169689Skan 327169689Skan if (ioctl(ctl_fd, SOUND_MIXER_READ_DEVMASK, &devmask) == -1) 328169689Skan printf("SOUND_MIXER_READ_DEVMASK: %s\n", strerror(errno)); 329169689Skan if (ioctl(ctl_fd, SOUND_MIXER_READ_RECMASK, &recmask) == -1) 330169689Skan printf("SOUND_MIXER_READ_RECMASK: %s\n", strerror(errno)); 331169689Skan 332169689Skan /* validate and set any specified config file stuff */ 333169689Skan if (cf_agc[0] != '\0') { 334169689Skan int i; 335169689Skan 336169689Skan /* recmask */ 337132718Skan i = mixer_name(cf_agc, recmask); 338169689Skan if (i >= 0) 339169689Skan agc = MIXER_WRITE(i); 340132718Skan else 341169689Skan printf("input %s not in recmask %#x\n", 342169689Skan cf_agc, recmask); 343169689Skan } 344169689Skan 345169689Skan if (cf_monitor[0] != '\0') { 346169689Skan int i; 347169689Skan 348169689Skan /* devmask */ 349169689Skan i = mixer_name(cf_monitor, devmask); 350169689Skan if (i >= 0) 351169689Skan audiomonitor = MIXER_WRITE(i); 352169689Skan else 353132718Skan printf("monitor %s not in devmask %#x\n", 354132718Skan cf_monitor, devmask); 355132718Skan } 356132718Skan 357132718Skan#else /* not PCM_STYLE_SOUND */ 358132718Skan AUDIO_INITINFO(&info); 359132718Skan info.play.gain = AUDIO_MAX_GAIN; 360132718Skan info.play.port = AUDIO_SPEAKER; 361132718Skan# ifdef HAVE_SYS_AUDIOIO_H 362132718Skan info.record.buffer_size = bufsiz; 363132718Skan# endif /* HAVE_SYS_AUDIOIO_H */ 364132718Skan rval = ioctl(ctl_fd, AUDIO_SETINFO, (char *)&info); 365169689Skan if (rval < 0) { 366132718Skan msyslog(LOG_ERR, "audio: invalid control device parameters"); 367169689Skan close(ctl_fd); 368132718Skan close(fd); 369132718Skan return(rval); 370169689Skan } 371169689Skan rval = fd; 372169689Skan#endif /* not PCM_STYLE_SOUND */ 373132718Skan return (rval); 374169689Skan} 375132718Skan 376169689Skan 377132718Skan/* 378132718Skan * audio_gain - adjust codec gains and port 379169689Skan */ 380132718Skanint 381169689Skanaudio_gain( 382132718Skan int gain, /* volume level (gain) 0-255 */ 383132718Skan int mongain, /* input to output mix (monitor gain) 0-255 */ 384132718Skan int port /* selected I/O port: 1 mic/2 line in */ 385169689Skan ) 386169689Skan{ 387132718Skan int rval; 388132718Skan static int o_mongain = -1; 389132718Skan static int o_port = -1; 390132718Skan 391169689Skan#ifdef PCM_STYLE_SOUND 392169689Skan int l, r; 393132718Skan 394169689Skan# ifdef GCC 395132718Skan rval = 0; /* GCC thinks rval is used uninitialized */ 396169689Skan# endif 397132718Skan 398132718Skan r = l = 100 * gain / 255; /* Normalize to 0-100 */ 399132718Skan# ifdef DEBUG 400169689Skan if (debug > 1) 401132718Skan printf("audio_gain: gain %d/%d\n", gain, l); 402132718Skan# endif 403132718Skan#if 0 /* not a good idea to do this; connector wiring dependency */ 404169689Skan /* figure out what channel(s) to use. just nuke right for now. */ 405169689Skan r = 0 ; /* setting to zero nicely mutes the channel */ 406132718Skan#endif 407132718Skan l |= r << 8; 408132718Skan if (cf_agc[0] != '\0') 409132718Skan rval = ioctl(ctl_fd, agc, &l); 410169689Skan else 411169689Skan rval = ioctl(ctl_fd 412132718Skan , (2 == port) 413132718Skan ? SOUND_MIXER_WRITE_LINE 414169689Skan : SOUND_MIXER_WRITE_MIC 415132718Skan , &l); 416169689Skan if (-1 == rval) { 417132718Skan printf("audio_gain: agc write: %s\n", strerror(errno)); 418132718Skan return rval; 419132718Skan } 420169689Skan 421132718Skan if (o_mongain != mongain) { 422132718Skan r = l = 100 * mongain / 255; /* Normalize to 0-100 */ 423132718Skan# ifdef DEBUG 424169689Skan if (debug > 1) 425169689Skan printf("audio_gain: mongain %d/%d\n", mongain, l); 426169689Skan# endif 427132718Skan l |= r << 8; 428132718Skan if (cf_monitor[0] != '\0') 429132718Skan rval = ioctl(ctl_fd, audiomonitor, &l ); 430169689Skan else 431169689Skan rval = ioctl(ctl_fd, SOUND_MIXER_WRITE_VOLUME, 432132718Skan &l); 433169689Skan if (-1 == rval) { 434132718Skan printf("audio_gain: mongain write: %s\n", 435169689Skan strerror(errno)); 436169689Skan return (rval); 437169689Skan } 438132718Skan o_mongain = mongain; 439169689Skan } 440132718Skan 441169689Skan if (o_port != port) { 442132718Skan# ifdef DEBUG 443132718Skan if (debug > 1) 444132718Skan printf("audio_gain: port %d\n", port); 445132718Skan# endif 446169689Skan l = (1 << ((port == 2) ? SOUND_MIXER_LINE : SOUND_MIXER_MIC)); 447132718Skan rval = ioctl(ctl_fd, SOUND_MIXER_WRITE_RECSRC, &l); 448132718Skan if (rval == -1) { 449169689Skan printf("SOUND_MIXER_WRITE_RECSRC: %s\n", 450169689Skan strerror(errno)); 451169689Skan return (rval); 452169689Skan } 453169689Skan# ifdef DEBUG 454169689Skan if (debug > 1) { 455169689Skan if (ioctl(ctl_fd, SOUND_MIXER_READ_RECSRC, &l) == -1) 456169689Skan printf("SOUND_MIXER_WRITE_RECSRC: %s\n", 457169689Skan strerror(errno)); 458169689Skan else 459169689Skan printf("audio_gain: recsrc is %d\n", l); 460169689Skan } 461169689Skan# endif 462169689Skan o_port = port; 463169689Skan } 464169689Skan#else /* not PCM_STYLE_SOUND */ 465169689Skan ioctl(ctl_fd, AUDIO_GETINFO, (char *)&info); 466169689Skan info.record.encoding = AUDIO_ENCODING_ULAW; 467169689Skan info.record.error = 0; 468169689Skan info.record.gain = gain; 469169689Skan if (o_mongain != mongain) 470169689Skan o_mongain = info.monitor_gain = mongain; 471169689Skan if (o_port != port) 472169689Skan o_port = info.record.port = port; 473169689Skan rval = ioctl(ctl_fd, AUDIO_SETINFO, (char *)&info); 474169689Skan if (rval < 0) { 475169689Skan msyslog(LOG_ERR, "audio_gain: %m"); 476169689Skan return (rval); 477169689Skan } 478169689Skan rval = info.record.error; 479169689Skan#endif /* not PCM_STYLE_SOUND */ 480169689Skan return (rval); 481169689Skan} 482169689Skan 483169689Skan 484169689Skan/* 485169689Skan * audio_show - display audio parameters 486169689Skan * 487169689Skan * This code doesn't really do anything, except satisfy curiousity and 488169689Skan * verify the ioctl's work. 489169689Skan */ 490169689Skanvoid 491169689Skanaudio_show(void) 492169689Skan{ 493169689Skan#ifdef PCM_STYLE_SOUND 494169689Skan int recsrc = 0; 495169689Skan 496169689Skan printf("audio_show: ctl_fd %d\n", ctl_fd); 497169689Skan if (ioctl(ctl_fd, SOUND_MIXER_READ_RECSRC, &recsrc) == -1) 498169689Skan printf("SOUND_MIXER_READ_RECSRC: %s\n", strerror(errno)); 499169689Skan 500169689Skan#else /* not PCM_STYLE_SOUND */ 501169689Skan# ifdef HAVE_SYS_AUDIOIO_H 502169689Skan ioctl(ctl_fd, AUDIO_GETDEV, &device); 503169689Skan printf("audio: name %s, version %s, config %s\n", 504169689Skan device.name, device.version, device.config); 505169689Skan# endif /* HAVE_SYS_AUDIOIO_H */ 506169689Skan ioctl(ctl_fd, AUDIO_GETINFO, (char *)&info); 507169689Skan printf( 508169689Skan "audio: rate %d, chan %d, prec %d, code %d, gain %d, mon %d, port %d\n", 509169689Skan info.record.sample_rate, info.record.channels, 510169689Skan info.record.precision, info.record.encoding, 511169689Skan info.record.gain, info.monitor_gain, info.record.port); 512169689Skan printf( 513169689Skan "audio: samples %d, eof %d, pause %d, error %d, waiting %d, balance %d\n", 514169689Skan info.record.samples, info.record.eof, 515169689Skan info.record.pause, info.record.error, 516169689Skan info.record.waiting, info.record.balance); 517169689Skan#endif /* not PCM_STYLE_SOUND */ 518169689Skan} 519169689Skan#else 520169689Skanint audio_bs; 521169689Skan#endif /* HAVE_{SYS_AUDIOIO,SUN_AUDIOIO,MACHINE_SOUNDCARD,SYS_SOUNDCARD}_H */ 522169689Skan