soundtest.c

   1 /*
   2   Broadcast 2.0 multitrack audio editing
   3   (c) 1997 Heroine Virtual
   4
   5   This program is distributed with the intent that it will be useful, without
   6   any warranty.  The code is being updated and has many bugs which are
   7   constantly being elucidated so changes should not be made without notifying
   8   the author.
   9 */
  10
  11 /* Run at startup to permanently allocate your DMA buffers */
  12
  13 #include <sys/soundcard.h>
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <unistd.h>
  17 #include <fcntl.h>
  18 #include <sys/ioctl.h>
  19 #include <math.h>
  20
  21 int main(int argc, char *argv[]){
  22         int dsp;
  23         int duplexenable = 1;
  24         audio_buf_info playinfo, recinfo;
  25         int bufsize = 0x7FFF0000;
  26         int fragsize;
  27
  28         int format = AFMT_S16_LE;
  29         int channels = 2;
  30         int samplerate = 44100;
  31
  32         if(argc < 2)
  33         {
  34                 bufsize += 15;
  35         }
  36         else
  37         {
  38                 fragsize = atol(argv[1]);
  39                 if(fragsize <= 0) fragsize = 32768;
  40                 bufsize += (long)(log(fragsize) / log(2));
  41         }
  42
  43 #ifdef USE_FULLDUPLEX
  44
  45         printf("*** Full duplex\n");
  46
  47         if((dsp = open("/dev/dsp", O_RDWR)) < 0){
  48         printf("Can't open audio device.\n");
  49         close(dsp);
  50         return 1;
  51         }
  52
  53         if (ioctl(dsp, SNDCTL_DSP_SETFRAGMENT, &bufsize))
  54                 printf("Couldn't set buffer parameters.\n");
  55
  56         if(duplexenable && ioctl(dsp, SNDCTL_DSP_SETDUPLEX, 0) == -1){
  57                 printf("Couldn't enable full duplex audio.\n");
  58                 duplexenable = 0;
  59         }
  60
  61         if(ioctl(dsp, SNDCTL_DSP_SETFMT, &format) < 0)
  62        printf("playback file format failed\n");
  63         if(ioctl(dsp, SNDCTL_DSP_CHANNELS, &channels) < 0)
  64        printf("playback channel allocation failed\n");
  65         if(ioctl(dsp, SNDCTL_DSP_SPEED, &samplerate) < 0)
  66        printf("playback sample rate set failed\n");
  67
  68         ioctl(dsp, SNDCTL_DSP_GETOSPACE, &playinfo);
  69
  70         printf("          fragments fragstotal fragsize   bytes  TOTAL BYTES AVAILABLE\n");
  71         printf("Playback: %9d %10d %8d %7d %12d\n", playinfo.fragments,
  72                 playinfo.fragstotal, playinfo.fragsize, playinfo.bytes, playinfo.bytes);
  73
  74         if(duplexenable)
  75         {
  76                 if(ioctl(dsp, SNDCTL_DSP_SETFMT, &format) < 0)
  77                  printf("record file format failed\n");
  78                 if(ioctl(dsp, SNDCTL_DSP_CHANNELS, &channels) < 0)
  79                  printf("record channel allocation failed\n");
  80                 if(ioctl(dsp, SNDCTL_DSP_SPEED, &samplerate) < 0)
  81                  printf("record sample rate set failed\n");
  82
  83                 ioctl(dsp, SNDCTL_DSP_GETISPACE, &recinfo);
  84
  85                 printf("Record:   %9d %10d %8d %7d %12d\n", recinfo.fragments,
  86                         recinfo.fragstotal, recinfo.fragsize, recinfo.bytes, recinfo.fragstotal * recinfo.fragsize);
  87         }
  88         close(dsp);
  89
  90
  91 #endif
  92
  93
  94         printf("\n*** Half duplex\n");
  95
  96   if((dsp = open("/dev/dsp", O_WRONLY)) < 0){
  97     printf("Can't open audio device.\n");
  98     close(dsp);
  99     return 1;
 100   }
 101
 102   if (ioctl(dsp, SNDCTL_DSP_SETFRAGMENT, &bufsize))
 103         printf("Couldn't set buffer parameters.\n");
 104
 105         if(duplexenable && ioctl(dsp, SNDCTL_DSP_SETDUPLEX, 0) == -1){
 106                 printf("Couldn't enable full duplex audio.\n");
 107                 duplexenable = 0;
 108         }
 109
 110   if(ioctl(dsp, SNDCTL_DSP_SETFMT, &format) < 0)
 111      printf("playback file format failed\n");
 112   if(ioctl(dsp, SNDCTL_DSP_CHANNELS, &channels) < 0)
 113      printf("playback channel allocation failed\n");
 114   if(ioctl(dsp, SNDCTL_DSP_SPEED, &samplerate) < 0)
 115      printf("playback sample rate set failed\n");
 116
 117   ioctl(dsp, SNDCTL_DSP_GETOSPACE, &playinfo);
 118
 119         printf("          fragments fragstotal fragsize   bytes  TOTAL BYTES AVAILABLE\n");
 120         printf("Playback: %9d %10d %8d %7d %12d\n", playinfo.fragments,
 121                 playinfo.fragstotal, playinfo.fragsize, playinfo.bytes, playinfo.bytes);
 122         close(dsp);
 123
 124
 125
 126   if((dsp = open("/dev/dsp", O_RDONLY)) < 0){
 127     printf("Can't open audio device.\n");
 128     close(dsp);
 129     return 1;
 130   }
 131
 132   if (ioctl(dsp, SNDCTL_DSP_SETFRAGMENT, &bufsize))
 133         printf("Couldn't set buffer parameters.\n");
 134
 135         if(duplexenable && ioctl(dsp, SNDCTL_DSP_SETDUPLEX, 0) == -1){
 136                 printf("Couldn't enable full duplex audio.\n");
 137                 duplexenable = 0;
 138         }
 139
 140   if(ioctl(dsp, SNDCTL_DSP_SETFMT, &format) < 0)
 141      printf("playback file format failed\n");
 142   if(ioctl(dsp, SNDCTL_DSP_CHANNELS, &channels) < 0)
 143      printf("playback channel allocation failed\n");
 144   if(ioctl(dsp, SNDCTL_DSP_SPEED, &samplerate) < 0)
 145      printf("playback sample rate set failed\n");
 146
 147         if(ioctl(dsp, SNDCTL_DSP_SETFMT, &format) < 0)
 148          printf("record file format failed\n");
 149         if(ioctl(dsp, SNDCTL_DSP_CHANNELS, &channels) < 0)
 150          printf("record channel allocation failed\n");
 151         if(ioctl(dsp, SNDCTL_DSP_SPEED, &samplerate) < 0)
 152          printf("record sample rate set failed\n");
 153
 154
 155
 156
 157         ioctl(dsp, SNDCTL_DSP_GETISPACE, &recinfo);
 158
 159         printf("Record:   %9d %10d %8d %7d %12d\n", recinfo.fragments,
 160                 recinfo.fragstotal, recinfo.fragsize, recinfo.bytes, recinfo.fragstotal * recinfo.fragsize);
 161
 162   ioctl(dsp, SNDCTL_DSP_RESET);
 163   close(dsp);
 164 }
 165
 166
 167
 168