test/playoss.c

   1 /*
   2     Copyright © 1995-2004, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Demo for oss.library to playback audio samples.
   6     It can play raw audio files containing 16 bit signed PCM data in little endian format.
   7     Chaning the format isn't possible for now.
   8     Default number of channels is 2 (stereo) and default playback rate is 44100 (CD quality).
   9 */
  10
  11 #define __OSS_NOLIBBASE__
  12
  13 #include <stdio.h>
  14 #include <unistd.h>
  15 #include <stdlib.h>
  16 #include <string.h>
  17
  18 #include <dos/dos.h>
  19 #include <proto/oss.h>
  20 #include <proto/exec.h>
  21 #include <proto/dos.h>
  22
  23 #define DSP_DRIVER_NAME "/dev/dsp"
  24
  25 #define BUFFERSIZE 0x57300
  26
  27 static struct Library *OSSBase;
  28
  29 static void cleanup(void *buffer, BPTR infh, BOOL closeoss)
  30 {
  31     if(closeoss) OSS_Close();
  32     if(OSSBase) CloseLibrary(OSSBase);
  33     if(infh) Close(infh);
  34     free(buffer);
  35
  36 }
  37
  38 int main (int argc, char *argv[])
  39 {
  40     BPTR infh;
  41     char *path;
  42     int format, channels, rate;
  43     int readlength, written, ok;
  44     void *buffer, *bufptr;
  45
  46     OSSBase = NULL;
  47     format = 0; //AFMT_S16_LE;
  48     channels = 2;
  49     rate = 44100;
  50     if (argc == 5) {
  51         format = atoi(argv[2]);
  52         channels = atoi(argv[3]);
  53         rate = atoi(argv[4]);
  54     } else if (argc != 2) {
  55         printf ("Usage:\nplayoss <filename> [<format> <channels> <rate>]\n");
  56         return -1;
  57     }
  58
  59     buffer = malloc(BUFFERSIZE);
  60     if (!buffer) {
  61         printf ("malloc error\n");
  62         return -1;
  63     }
  64
  65     path = argv[1];
  66     infh = Open(path, MODE_OLDFILE);
  67     if (infh == 0) {
  68         printf ("error %ld opening file %s\n", IoErr(), path);
  69         cleanup(buffer, NULL, FALSE);
  70         return -1;
  71     }
  72
  73     OSSBase = OpenLibrary("oss.library", 0);
  74     if (!OSSBase)
  75     {
  76         printf("Could not open oss.library!\n");
  77         cleanup(buffer, infh, FALSE);
  78         return -1;
  79     }
  80
  81     ok = OSS_Open(DSP_DRIVER_NAME, FALSE, TRUE, TRUE);
  82     if (!ok) {
  83         printf ("error opening DSP\n");
  84         cleanup(buffer, infh, FALSE);
  85         return -1;
  86     }
  87
  88     if( !OSS_SetFormat_S16LE() ) {
  89         printf("error setting format\n");
  90         cleanup(buffer, infh, TRUE);
  91         return -1;
  92     }
  93
  94     if( !OSS_SetNumChannels(channels) ) {
  95         printf("error setting channels\n");
  96         cleanup(buffer, infh, TRUE);
  97         return -1;
  98     }
  99
 100     if( !OSS_SetWriteRate(rate, &rate) ) {
 101         printf("error setting write rate\n");
 102         cleanup(buffer, infh, TRUE);
 103         return -1;
 104     }
 105     printf ("File:     %s\nFormat:   %d\nChannels: %d\nRate:     %d\n", path, format, channels, rate);
 106
 107     while( (readlength = Read(infh, buffer, BUFFERSIZE)) > 0 ) {
 108         // printf("read %d\n", readlength);
 109         bufptr = buffer;
 110         do {
 111             written = OSS_Write(bufptr, readlength);
 112             // printf("written %d\n", written);
 113             if( written < 0 ) {
 114                 printf ("error writing audio %d\n", written);
 115                 cleanup(buffer, infh, TRUE);
 116                 return -1;
 117             }
 118
 119             bufptr += written;
 120             readlength -= written;
 121         } while( readlength > 0 );
 122     }
 123
 124     if( readlength < 0 ) {
 125         printf ("error %ld reading file\n", IoErr());
 126         cleanup(buffer, infh, TRUE);
 127         return -1;
 128     }
 129
 130     cleanup(buffer, infh, TRUE);
 131     return 0;
 132 }