XeNTaX

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char** argv)
{
  if(argc == 1) {
    printf("Usage: %s <path_to_file.str>\n", argv[0]);
    return -1;
  }
  FILE *fp = fopen(argv[1], "rb");
  int len = strlen(argv[1]);
  char * out_name = (char*)calloc(len + 5, 1);
  memcpy(out_name, argv[1], len);
  strncat(out_name, ".raw", 4);
  
  FILE *fo = fopen(out_name, "wb");
  free(out_name);
  
  if(!fp || !fo) {
    puts("Error opening input/output files");
    return -1;
  }
  
  const int INTERLEAVE = 512;
  int ctr = 0;
  char buffer[INTERLEAVE * 2];
  const int width = 2;
  while(!feof(fp)) {
    if(ctr < INTERLEAVE) {
      fread(buffer + ((ctr / width) << 2), width, 1, fp);
      ctr += width;
    }
    else if(ctr < (INTERLEAVE * 2)) {
      fread(buffer + (((ctr - INTERLEAVE) / width) << 2) + width, width, 1, fp);
      ctr += width;
    }
    else {
      fwrite(buffer, (INTERLEAVE * 2), 1, fo);
      ctr = 0;
      memset(buffer, 0, (INTERLEAVE * 2));
    }
  }
  fclose(fp);
  fclose(fo);
  return 0;
}

Code: Select all

typedef struct {
  char    chunk_id[4];
  uint32  chunk_size;
  byte    chunk_data[chunk_size];
} soundbank_chunk;

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first 192 bytes of a .nse file:
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44 00 F0 10 FE F2 00 FF E0 F0 F1 12 D0 CD FD 30
24 00 35 13 B0 DB 2D 32 F2 0F F1 12 12 01 10 F2
24 00 CD 0D 55 C2 DD 01 21 13 D0 FE 00 DF ED 01
24 00 ED 1D 30 22 01 BB EA 52 35 D0 DE 1F 11 12
24 00 FF FF 2F 31 01 EF EE 52 24 21 20 33 30 12
25 00 01 E0 DC 41 76 16 BC 21 44 11 57 15 C1 AB
44 00 51 45 11 DE 30 22 F3 11 52 45 F1 0F 2F 32
44 00 43 04 FF FC 42 35 24 12 2F 34 03 12 23 12
24 00 0F 30 66 23 00 E0 F0 E1 FE F0 12 31 43 22
25 00 25 01 2E 42 33 10 20 21 21 33 13 13 23 24
24 00 10 21 13 10 31 44 33 E2 20 C2 20 32 22 02