src/lib/16_vrs.c

   1 #include <stdio.h>
   2 #include <fcntl.h>
   3 #include <ctype.h>
   4 #include <errno.h>
   5 #include <assert.h>
   6 #include <stdint.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10
  11 #include "stdlib.h"
  12 #include "16_vrs.h"
  13
  14 int read_vrs(char *filename, struct vrs_container *vrs_cont){
  15         int fd;
  16         unsigned long size;
  17         unsigned char *buffer;
  18         fd = open(filename, O_RDONLY|O_BINARY);
  19         // Insert sanity cheks later
  20         size = lseek(fd, 0, SEEK_END);
  21         buffer = malloc(size);
  22         lseek(fd, 0, SEEK_SET);
  23         read(fd, buffer, size);
  24         vrs_cont->size = size;
  25         vrs_cont->buffer = buffer;
  26
  27         return 0;
  28 }
  29
  30 struct vrl_container* get_vrl_by_id(struct vrs_container *vrs_cont, uint16_t id){
  31         uint16_t *ids;
  32         uint32_t *vrl_list;
  33         int counter = 0;
  34         struct vrl_container *vrl_cont;
  35         if(id == 0){
  36                 return 0;
  37         }
  38         ids = (uint16_t*)vrs_cont->buffer + (unsigned long)vrs_cont->vrs_hdr->offset_table[VRS_HEADER_OFFSET_SPRITE_ID_LIST];
  39         while(ids[counter] != id && ids[counter]){
  40                 counter++;
  41         }
  42         vrl_list = (uint32_t *)(vrs_cont->buffer + vrs_cont->vrs_hdr->offset_table[VRS_HEADER_OFFSET_VRS_LIST]);
  43         vrl_cont = (struct vrl_container*)malloc(sizeof(struct vrl_container));
  44         vrl_cont->vrl_header = (struct vrl1_vgax_header*)(vrs_cont->buffer + vrl_list[counter]);
  45         vrl_cont->size = vrl_list[counter+1] - vrl_list[counter];
  46         return vrl_cont;
  47 }