TOOLS/alaw-gen.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3
   4 // sox -t raw -A -r 8000 -b alaw.alaw -t sw alaw.out
   5
   6 int main(void){
   7 int i;
   8 FILE *f;
   9
  10 f=fopen("alaw.dat","wb");
  11 for(i=0;i<256;i++) fwrite(&i,1,1,f);
  12 fclose(f);
  13
  14 system("sox -t raw -A -r 8000 -b alaw.dat -t sw alaw.out");
  15
  16 printf("// Generated by TOOLS/alaw-gen.c\n\n");
  17
  18 printf("#ifndef MPLAYER_ALAW_H\n");
  19 printf("#define MPLAYER_ALAW_H\n");
  20
  21 printf("\nconst short alaw2short[]={\n");
  22
  23 f=fopen("alaw.out","rb");
  24 for(i=0;i<256;i++){
  25   signed short x;
  26   fread(&x,2,1,f);
  27   printf("%7d",x);
  28   if(i!=255) putchar(',');
  29   if((i&7)==7) printf("\n");
  30 }
  31 fclose(f);
  32 printf("};\n");
  33
  34 system("sox -t raw -U -r 8000 -b alaw.dat -t sw alaw.out");
  35
  36 printf("\nconst short ulaw2short[]={\n");
  37
  38 f=fopen("alaw.out","rb");
  39 for(i=0;i<256;i++){
  40   signed short x;
  41   fread(&x,2,1,f);
  42   printf("%7d",x);
  43   if(i!=255) putchar(',');
  44   if((i&7)==7) printf("\n");
  45 }
  46 fclose(f);
  47 printf("};\n\n");
  48
  49 printf("#endif /* MPLAYER_ALAW_H */\n");
  50
  51 return 0;
  52 }