TOOLS/alaw-gen.c

   1 /*
   2  * This program is free software; you can redistribute it and/or modify
   3  * it under the terms of the GNU General Public License as published by
   4  * the Free Software Foundation; either version 2 of the License, or
   5  * (at your option) any later version.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License along
  13  * with this program; if not, write to the Free Software Foundation, Inc.,
  14  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  15  */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19
  20 // sox -t raw -A -r 8000 -b alaw.alaw -t sw alaw.out
  21
  22 int main(void){
  23 int i;
  24 FILE *f;
  25
  26 f=fopen("alaw.dat","wb");
  27 for(i=0;i<256;i++) fwrite(&i,1,1,f);
  28 fclose(f);
  29
  30 system("sox -t raw -A -r 8000 -b alaw.dat -t sw alaw.out");
  31
  32 printf("// Generated by TOOLS/alaw-gen.c\n\n");
  33
  34 printf("#ifndef MPLAYER_ALAW_H\n");
  35 printf("#define MPLAYER_ALAW_H\n");
  36
  37 printf("\nconst short alaw2short[]={\n");
  38
  39 f=fopen("alaw.out","rb");
  40 for(i=0;i<256;i++){
  41   signed short x;
  42   fread(&x,2,1,f);
  43   printf("%7d",x);
  44   if(i!=255) putchar(',');
  45   if((i&7)==7) printf("\n");
  46 }
  47 fclose(f);
  48 printf("};\n");
  49
  50 system("sox -t raw -U -r 8000 -b alaw.dat -t sw alaw.out");
  51
  52 printf("\nconst short ulaw2short[]={\n");
  53
  54 f=fopen("alaw.out","rb");
  55 for(i=0;i<256;i++){
  56   signed short x;
  57   fread(&x,2,1,f);
  58   printf("%7d",x);
  59   if(i!=255) putchar(',');
  60   if((i&7)==7) printf("\n");
  61 }
  62 fclose(f);
  63 printf("};\n\n");
  64
  65 printf("#endif /* MPLAYER_ALAW_H */\n");
  66
  67 return 0;
  68 }