out_sgi.c

   1 /*
   2
   3     PROGRAM_NAME PROGRAM_VERSION - PROGRAM_DESCRIPTION
   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 <dmedia/audio.h>
  27
  28 #include "output.h"
  29
  30 /*******************
  31         Data
  32 ********************/
  33
  34 extern int _frequency;
  35
  36 /* audio configuration */
  37 static ALconfig ac;
  38
  39 /* audio port */
  40 static ALport ap;
  41
  42
  43 /*******************
  44         Code
  45 ********************/
  46
  47 int _out_open_sgi(char * file)
  48 {
  49         ac=alNewConfig();
  50
  51         if(!ac) return(-100);
  52
  53         /* set stereo, 16 bit, signed */
  54         alSetChannels(ac, AL_STEREO);
  55         alSetWidth(ac, AL_SAMPLE_16);
  56         alSetSampFmt(ac, AL_SAMPFMT_TWOSCOMP);
  57
  58         alSetDevice(ac, AL_DEFAULT_OUTPUT);
  59
  60         ap=alOpenPort("Ann Hell", "w", ac);
  61
  62         if(!ap) return(-101);
  63
  64         return(0);
  65 }
  66
  67
  68 int _out_write_sgi(int lsample, int rsample)
  69 {
  70         short buf[2];
  71
  72         buf[0]=(short) lsample;
  73         buf[1]=(short) rsample;
  74
  75         alWriteFrames(ap, buf, 2);
  76
  77         return(0);
  78 }
  79
  80
  81 int _out_close_sgi(void)
  82 {
  83         alClosePort(ap);
  84         alFreeConfig(ac);
  85
  86         return(0);
  87 }