apps/play/main.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <snd/audio.h>
  25
  26 #define KB_ESC          1
  27 #define RIFF_MAGIC      0x46464952
  28 #define WAVE_MAGIC      0x20746d66
  29 #define DATA_MAGIC      0x61746164
  30
  31 /* RIFF header */
  32 typedef struct {
  33         unsigned chunkid;
  34         unsigned chunksize;
  35         unsigned format;
  36 } riff_head_t;
  37
  38 /* WAVE header */
  39 typedef struct {
  40         unsigned subchunk1id;
  41         unsigned subchunk1size;
  42         unsigned short audioformat;
  43         unsigned short numchannels;
  44         unsigned samplerate;
  45         unsigned byterate;
  46         unsigned short blockalign;
  47         unsigned short bitspersample;
  48 } fmt_head_t;
  49
  50 /* DATA header */
  51 typedef struct {
  52         unsigned subchunk2id;
  53         unsigned subchunk2size;
  54 } data_head_t;
  55
  56 int main (int argc, char **argv)
  57 {
  58         printf ("play - The Wav Player\n");
  59
  60         if (argc <= 1) {
  61                 printf ("-> Please specify *.wav file to play\nSyntax: exec play <wavfile>\n");
  62                 return -1;
  63         }
  64
  65         FILE *f = fopen (argv[1], "r");
  66
  67         if (!f) {
  68                 printf ("error -> file '%s' not found\n", argv[1]);
  69                 return -1;
  70         }
  71
  72         fseek (f, 0, SEEK_END);
  73         unsigned flen = ftell (f);
  74         fseek (f, 0, SEEK_SET);
  75
  76         /* HACK: because of virtualbox & qemu ac'97 bug */
  77         char *file = (char *) 0x400000;
  78
  79         if (!file)
  80                 return 0;
  81
  82         fread (file, flen, 1, f);
  83
  84         fclose (f);
  85
  86         riff_head_t *riff = (riff_head_t *) file;
  87         fmt_head_t *fmt = (fmt_head_t *) ((char *) file + sizeof (riff_head_t));
  88         data_head_t *data = (data_head_t *) ((char *) file + sizeof (riff_head_t) + sizeof (fmt_head_t));
  89
  90         if (riff->chunkid != RIFF_MAGIC) {
  91                 printf ("-> Wrong RIFF header magic: 0x%x, should be: 0x%x\n", riff->chunkid, RIFF_MAGIC);
  92                 goto clean;
  93         }
  94
  95         if (fmt->subchunk1id != WAVE_MAGIC) {
  96                 printf ("-> Wrong WAVE header magic: 0x%x, should be: 0x%x\n", fmt->subchunk1id, WAVE_MAGIC);
  97                 goto clean;
  98         }
  99
 100         if (data->subchunk2id != DATA_MAGIC) {
 101                 printf ("-> Wrong DATA header magic: 0x%x, should be: 0x%x\n", data->subchunk2id, DATA_MAGIC);
 102                 goto clean;
 103         }
 104
 105         snd_cfg_t cfg;
 106         cfg.dev = "/dev/ac97";
 107         cfg.rate = fmt->samplerate;
 108         cfg.format = SOUND_FORMAT_S16;
 109         cfg.channels = fmt->numchannels;
 110
 111         snd_audio_t *aud = audio_open (&cfg);
 112
 113         if (!aud) {
 114                 printf ("Device is too busy\n");
 115                 goto clean;
 116         }
 117
 118         audio_write (aud, file+44, flen-44);
 119
 120         printf ("Press ESC to stop playing\n");
 121
 122         for (; getkey () != KB_ESC; schedule ());
 123
 124         audio_close (aud);
 125 clean:
 126         free (file);
 127
 128         return 0;
 129 }