dist/ntp/util/audio-pcm.c

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * audio-pcm.c - Scope out the PCM audio stuff
   5  */
   6 #ifdef HAVE_CONFIG_H
   7 # include <config.h>
   8 #endif
   9
  10 #if defined(HAVE_MACHINE_SOUNDCARD_H) || defined(HAVE_SYS_SOUNDCARD_H)
  11
  12 #include "audio.h"
  13 #include "ntp_stdlib.h"
  14 #include "ntp_syslog.h"
  15 #ifdef HAVE_UNISTD_H
  16 # include <unistd.h>
  17 #endif
  18 #include <stdio.h>
  19 #include "ntp_string.h"
  20
  21 #ifdef HAVE_SYS_IOCTL_H
  22 #include <sys/ioctl.h>
  23 #endif /* HAVE_SYS_IOCTL_H */
  24
  25 #include <fcntl.h>
  26
  27 #ifdef HAVE_MACHINE_SOUNDCARD_H
  28 # include <machine/soundcard.h>
  29 # define PCM_STYLE_SOUND
  30 #else
  31 # ifdef HAVE_SYS_SOUNDCARD_H
  32 #  include <sys/soundcard.h>
  33 #  define PCM_STYLE_SOUND
  34 # endif
  35 #endif
  36
  37 /*
  38  * Global variables
  39  */
  40 static int ctl_fd;              /* audio control file descriptor */
  41
  42 const char *m_names[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES ;
  43
  44 void
  45 d_fmt(
  46       unsigned int format
  47       )
  48 {
  49
  50   if (format & AFMT_MU_LAW)     printf("MU_LAW ");
  51   if (format & AFMT_A_LAW)      printf("A_LAW ");
  52   if (format & AFMT_IMA_ADPCM)  printf("IMA_ADPCM ");
  53   if (format & AFMT_U8)         printf("U8 ");
  54   if (format & AFMT_S16_LE)     printf("S16_LE ");
  55   if (format & AFMT_S16_BE)     printf("S16_BE ");
  56   if (format & AFMT_S8)         printf("S8 ");
  57   if (format & AFMT_U16_LE)     printf("U16_LE ");
  58   if (format & AFMT_U16_BE)     printf("U16_BE ");
  59   if (format & AFMT_MPEG)       printf("MPEG ");
  60   if (format & AFMT_AC3)        printf("AC3 ");
  61   printf("\n");
  62 }
  63
  64 void
  65 d_mixer(
  66         unsigned int mixer
  67         )
  68 {
  69   int i;
  70   int n = 0;
  71
  72   for (i = 0; i < SOUND_MIXER_NRDEVICES; ++i)
  73     if ((1 << i) & mixer) {
  74       if (n)
  75         printf(", ");
  76       printf("%s", m_names[i]);
  77       n = 1;
  78     }
  79   printf("\n");
  80 }
  81
  82 int
  83 main( )
  84 {
  85         int     unit = 0;       /* device unit (0-3) */
  86 # define AI_DEV         "/dev/audio%d"
  87 # define AC_DEV         "/dev/mixer%d"
  88         char ai_dev[30];
  89         char ac_dev[30];
  90         struct snd_size s_size;
  91         snd_chan_param s_c_p;
  92         snd_capabilities s_c;
  93         int fd;
  94         int rval;
  95         char *dname = ai_dev;           /* device name */
  96         char *actl = ac_dev;
  97         int devmask = 0, recmask = 0, recsrc = 0;
  98
  99         (void)sprintf(ai_dev, AI_DEV, unit);
 100         (void)sprintf(ac_dev, AC_DEV, unit);
 101
 102         /*
 103          * Open audio device. Do not complain if not there.
 104          */
 105         fd = open(dname, O_RDWR | O_NONBLOCK, 0777);
 106         if (fd < 0)
 107                 return (fd);
 108
 109         /*
 110          * Open audio control device.
 111          */
 112         ctl_fd = open(actl, O_RDWR);
 113         if (ctl_fd < 0) {
 114                 fprintf(stderr, "invalid control device <%s>\n", actl);
 115                 close(fd);
 116                 return(ctl_fd);
 117         }
 118
 119         printf("input:   <%s> %d\n", dname, fd);
 120         printf("control: <%s> %d\n", actl, ctl_fd);
 121
 122         if (ioctl(ctl_fd, SOUND_MIXER_READ_DEVMASK, &devmask) == -1)
 123             printf("SOUND_MIXER_READ_DEVMASK: %s\n", strerror(errno));
 124         if (ioctl(ctl_fd, SOUND_MIXER_READ_RECMASK, &recmask) == -1)
 125             printf("SOUND_MIXER_READ_RECMASK: %s\n", strerror(errno));
 126         if (ioctl(ctl_fd, SOUND_MIXER_READ_RECSRC, &recsrc) == -1)
 127             printf("SOUND_MIXER_READ_RECSRC: %s\n", strerror(errno));
 128
 129         printf("devmask: %#x recmask: %#x recsrc: %#x\n",
 130                 devmask, recmask, recsrc);
 131         printf("Devmask: "); d_mixer(devmask);
 132         printf("Recmask: "); d_mixer(recmask);
 133         printf("RecSrc:  "); d_mixer(recsrc);
 134
 135         /*
 136          * Set audio device parameters.
 137          */
 138         rval = fd;
 139
 140         if (ioctl(fd, AIOGSIZE, &s_size) == -1)
 141             printf("AIOGSIZE: %s\n", strerror(errno));
 142         else
 143             printf("play_size %d, rec_size %d\n",
 144                 s_size.play_size, s_size.rec_size);
 145
 146         if (ioctl(fd, AIOGFMT, &s_c_p) == -1)
 147             printf("AIOGFMT: %s\n", strerror(errno));
 148         else {
 149           printf("play_rate %lu, rec_rate %lu, play_format %#lx, rec_format %#lx\n",
 150                  s_c_p.play_rate, s_c_p.rec_rate, s_c_p.play_format, s_c_p.rec_format);
 151           printf("Play format: "); d_fmt(s_c_p.play_format);
 152           printf("Rec format:  "); d_fmt(s_c_p.rec_format);
 153         }
 154
 155 }
 156 #endif /* HAVE_{MACHINE_SOUNDCARD,SYS_SOUNDCARD}_H */