output.c

   1 /*
   2
   3     output.c
   4
   5     Copyright (C) 2003 Angel Ortega <angel@triptico.com>
   6
   7     This program is free software; you can redistribute it and/or
   8     modify it under the terms of the GNU General Public License
   9     as published by the Free Software Foundation; either version 2
  10     of the License, or (at your option) any later version.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15     GNU General Public License for more details.
  16
  17     You should have received a copy of the GNU General Public License
  18     along with this program; if not, write to the Free Software
  19     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20
  21     http://www.triptico.com
  22
  23 */
  24
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include "output.h"
  28
  29 /* output drivers */
  30 #include "out_raw.h"
  31 #include "out_wav.h"
  32 #include "out_pipe.h"
  33 #include "out_oss.h"
  34
  35 static struct
  36 {
  37         char * name;
  38         int (* open)(char *);
  39         int (* write)(int, int);
  40         int (* close)(void);
  41 } _drivers[]={
  42         { "raw", _out_open_raw, _out_write_raw, _out_close_raw },
  43         { "wav", _out_open_wav, _out_write_wav, _out_close_wav },
  44         { "pipe", _out_open_pipe, _out_write_pipe, _out_close_pipe },
  45 #ifdef LINUX_OSS
  46         { "oss", _out_open_oss, _out_write_oss, _out_close_oss },
  47 #endif
  48         { NULL, NULL, NULL, NULL }
  49 };
  50
  51 /* driver in use */
  52 static int _driver=-1;
  53
  54 int output_open(char * name, char * filename)
  55 {
  56         int n;
  57
  58         if(_driver != -1)
  59                 return(-1);
  60
  61         for(n=0;;n++)
  62         {
  63                 if(strcmp(name, _drivers[n].name)==0)
  64                         break;
  65
  66                 if(_drivers[n].name == NULL)
  67                         return(-2);
  68         }
  69
  70         _driver=n;
  71
  72         return(_drivers[_driver].open(filename));
  73 }
  74
  75
  76 int output_write(int lsample, int rsample)
  77 {
  78         return(_drivers[_driver].write(lsample, rsample));
  79 }
  80
  81
  82 int output_close(void)
  83 {
  84         int r;
  85
  86         r=_drivers[_driver].close();
  87         _driver=-1;
  88
  89         return(r);
  90 }