src/lib/16_vrs.c

   1 /* Project 16 Source Code~\r
   2  * Copyright (C) 2012-2017 sparky4 & pngwen & andrius4669 & joncampbell123 & yakui-lover\r
   3  *\r
   4  * This file is part of Project 16.\r
   5  *\r
   6  * Project 16 is free software; you can redistribute it and/or modify\r
   7  * it under the terms of the GNU General Public License as published by\r
   8  * the Free Software Foundation; either version 3 of the License, or\r
   9  * (at your option) any later version.\r
  10  *\r
  11  * Project 16 is distributed in the hope that it will be useful,\r
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14  * GNU General Public License for more details.\r
  15  *\r
  16  * You should have received a copy of the GNU General Public License\r
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>, or\r
  18  * write to the Free Software Foundation, Inc., 51 Franklin Street,\r
  19  * Fifth Floor, Boston, MA 02110-1301 USA.\r
  20  *\r
  21  */\r
  22 #include "src/lib/16_vrs.h"\r
  23 \r
  24 #define VRS_USECAMMPM\r
  25 \r
  26 void VRS_ReadVRS(char *filename, entity_t *enti, global_game_variables_t *gvar){        VRS_OpenVRS(filename, enti, 1, gvar);   }\r
  27 void VRS_LoadVRS(char *filename, entity_t *enti, global_game_variables_t *gvar){        VRS_OpenVRS(filename, enti, 0, gvar);   }\r
  28 void VRS_OpenVRS(char *filename, entity_t *enti, boolean rlsw, global_game_variables_t *gvar)\r
  29 {\r
  30 #ifndef VRS_USECAMMPM\r
  31         vrl1_vgax_offset_t **vrl_line_offsets;\r
  32 #endif\r
  33         uint16_t far *vrl_id_iter;\r
  34         uint32_t far *vrl_headers_offsets;\r
  35         struct vrl1_vgax_header far *curr_vrl;\r
  36         uint32_t vrl_size;\r
  37         int num_of_vrl,i;\r
  38         int size=0;\r
  39 \r
  40         switch(rlsw)\r
  41         {\r
  42                 case 1:\r
  43                         CA_ReadFile(filename, &gvar->ca.spribuff, gvar);\r
  44                 break;\r
  45                 case 0:\r
  46                         CA_LoadFile(filename, &gvar->ca.spribuff, gvar);\r
  47                 break;\r
  48         }\r
  49 \r
  50         // Insert sanity cheks later\r
  51         enti->spri.spritesheet.buffer = gvar->ca.spribuff;\r
  52         enti->spri.spritesheet.data_size = size - sizeof(struct vrl1_vgax_header);\r
  53         num_of_vrl = 0;\r
  54         vrl_id_iter = (uint16_t far *)(enti->spri.spritesheet.buffer + enti->spri.spritesheet.vrs_hdr->offset_table[VRS_HEADER_OFFSET_SPRITE_ID_LIST]);\r
  55         while(vrl_id_iter[num_of_vrl]){\r
  56                 num_of_vrl++;\r
  57         }\r
  58 \r
  59         // Allocate memory for vrl line offsets table\r
  60 #ifndef VRS_USECAMMPM\r
  61         vrl_line_offsets = malloc(sizeof(vrl1_vgax_offset_t *)*num_of_vrl);//TODO: USE MM_ CA_ AND PM_\r
  62 #else\r
  63         MM_GetPtr(MEMPTRCONV gvar->ca.grsegs[0], sizeof(vrl1_vgax_offset_t *)*num_of_vrl, gvar);\r
  64         enti->spri.spritesheet.vrl_line_offsets = (vrl1_vgax_offset_t **)gvar->ca.grsegs[0];\r
  65 #endif\r
  66 \r
  67         vrl_headers_offsets = (uint32_t far *)(enti->spri.spritesheet.buffer + enti->spri.spritesheet.vrs_hdr->offset_table[VRS_HEADER_OFFSET_VRS_LIST]);\r
  68         // Calculate line offsets for each vrl\r
  69         for(i = 0; i < num_of_vrl; i++){\r
  70                 curr_vrl = (struct vrl1_vgax_header far *)(enti->spri.spritesheet.buffer + vrl_headers_offsets[i]);\r
  71 \r
  72                 // Calc. vrl size as (next_offset - curr_offset)\r
  73                 if (i != num_of_vrl - 1){\r
  74                         vrl_size = vrl_headers_offsets[i+1] - vrl_headers_offsets[i] - sizeof(struct vrl1_vgax_header);\r
  75                 }\r
  76                 // If it's the last vrl, size is (next_vrs_struct_offset - curr_offset)\r
  77                 else{\r
  78                         vrl_size = enti->spri.spritesheet.vrs_hdr->offset_table[VRS_HEADER_OFFSET_SPRITE_ID_LIST] - vrl_headers_offsets[i] - sizeof(struct vrl1_vgax_header);\r
  79                 }\r
  80 #ifndef VRS_USECAMMPM\r
  81                 vrl_line_offsets[i] = vrl1_vgax_genlineoffsets(curr_vrl, (byte *)curr_vrl + sizeof(struct vrl1_vgax_header), vrl_size);\r
  82 #else\r
  83                 enti->spri.spritesheet.vrl_line_offsets[i] = vrl1_vgax_genlineoffsets(curr_vrl, (byte *)curr_vrl + sizeof(struct vrl1_vgax_header), vrl_size);\r
  84 #endif\r
  85         }\r
  86 #ifndef VRS_USECAMMPM\r
  87         enti->spri.spritesheet.vrl_line_offsets = vrl_line_offsets;\r
  88 #endif\r
  89 }\r
  90 \r
  91 void VRS_ReadVRL(char *filename, entity_t *enti, global_game_variables_t *gvar){        VRS_OpenVRL(filename, enti, 1, gvar);   }\r
  92 void VRS_LoadVRL(char *filename, entity_t *enti, global_game_variables_t *gvar){        VRS_OpenVRL(filename, enti, 0, gvar);   }\r
  93 void VRS_OpenVRL(char *filename, entity_t *enti, boolean rlsw, global_game_variables_t *gvar)\r
  94 {\r
  95         vrl1_vgax_offset_t *vrl_line_offsets;\r
  96 //      struct vrl1_vgax_header *vrl_header;\r
  97 //      uint16_t far *vrl_id_iter;\r
  98 //      uint32_t far *vrl_headers_offsets;\r
  99 //      struct vrl1_vgax_header far *curr_vrl;\r
 100         uint32_t vrl_size;\r
 101 //      int num_of_vrl,i;\r
 102         int size=0;\r
 103 \r
 104         switch(rlsw)\r
 105         {\r
 106                 case 1:\r
 107                         CA_ReadFile(filename, &gvar->ca.spribuff, gvar);\r
 108                 break;\r
 109                 case 0:\r
 110                         CA_LoadFile(filename, &gvar->ca.spribuff, gvar);\r
 111                 break;\r
 112         }\r
 113 \r
 114         // Insert sanity cheks later\r
 115         enti->spri.sprite_vrl_cont.buffer = gvar->ca.spribuff;\r
 116         enti->spri.sprite_vrl_cont.data_size = size - sizeof(struct vrl1_vgax_header);\r
 117 \r
 118         vrl_size = enti->spri.sprite_vrl_cont.buffer - enti->spri.sprite_vrl_cont.buffer - sizeof(struct vrl1_vgax_header);\r
 119 //      vrl_header = (struct vrl1_vgax_header far *)(enti->spri.sprite_vrl_cont.buffer + enti->spri.sprite_vrl_cont.buffer);\r
 120 #if 0\r
 121         num_of_vrl = 0;\r
 122         while(vrl_id_iter[num_of_vrl]){\r
 123                 num_of_vrl++;\r
 124         }\r
 125 \r
 126         // Allocate memory for vrl line offsets table\r
 127 //#ifndef VRS_USECAMMPM\r
 128         vrl_line_offsets = malloc(sizeof(vrl1_vgax_offset_t *)*num_of_vrl);//TODO: USE MM_ CA_ AND PM_\r
 129 //#else\r
 130         MM_GetPtr(MEMPTRCONV gvar->ca.grsegs[0], sizeof(vrl1_vgax_offset_t *)*num_of_vrl, gvar);\r
 131         enti->spri.sprite_vrl_cont.vrl_line_offsets = (vrl1_vgax_offset_t **)gvar->ca.grsegs[0];\r
 132 //#endif\r
 133 \r
 134         vrl_headers_offsets = (uint32_t far *)(enti->spri.sprite_vrl_cont.buffer + enti->spri.sprite_vrl_cont.vrs_hdr->offset_table[VRS_HEADER_OFFSET_VRS_LIST]);\r
 135         // Calculate line offsets for each vrl\r
 136         for(i = 0; i < num_of_vrl; i++){\r
 137                 curr_vrl = (struct vrl1_vgax_header far *)(enti->spri.sprite_vrl_cont.buffer + vrl_headers_offsets[i]);\r
 138 \r
 139                 // Calc. vrl size as (next_offset - curr_offset)\r
 140                 if (i != num_of_vrl - 1){\r
 141                         vrl_size = vrl_headers_offsets[i+1] - vrl_headers_offsets[i] - sizeof(struct vrl1_vgax_header);\r
 142                 }\r
 143                 // If it's the last vrl, size is (next_vrs_struct_offset - curr_offset)\r
 144                 else{\r
 145                         vrl_size = enti->spri.sprite_vrl_cont.vrs_hdr->offset_table[VRS_HEADER_OFFSET_SPRITE_ID_LIST] - vrl_headers_offsets[i] - sizeof(struct vrl1_vgax_header);\r
 146                 }\r
 147 #ifndef VRS_USECAMMPM\r
 148                 vrl_line_offsets = vrl1_vgax_genlineoffsets(curr_vrl, (byte *)curr_vrl + sizeof(struct vrl1_vgax_header), vrl_size);\r
 149 #else\r
 150                 enti->spri.sprite_vrl_cont.vrl_line_offsets[i] = vrl1_vgax_genlineoffsets(curr_vrl, (byte *)curr_vrl + sizeof(struct vrl1_vgax_header), vrl_size);\r
 151 #endif\r
 152         }\r
 153 #endif\r
 154 \r
 155                 vrl_line_offsets = vrl1_vgax_genlineoffsets(enti->spri.sprite_vrl_cont.vrl_header,      (byte *)enti->spri.sprite_vrl_cont.buffer + sizeof(struct vrl1_vgax_header),    vrl_size);\r
 156 #ifndef VRS_USECAMMPM\r
 157         enti->spri.sprite_vrl_cont.vrl_line_offsets = vrl_line_offsets;\r
 158 #endif\r
 159 }\r
 160 \r
 161 // Seek and return a specified .vrl blob from .vrs blob in far memory\r
 162 int get_vrl_by_id(struct vrs_container far *vrs_cont, uint16_t id, struct vrl_container *vrl_cont){\r
 163         uint16_t far *ids;\r
 164         uint32_t far *vrl_offs_list;\r
 165         int counter = 0;\r
 166 \r
 167         // If id is invalid, return -1\r
 168         if(id == 0){\r
 169                 // Probably add an error message?\r
 170                 return -1;\r
 171         }\r
 172 \r
 173         // Get id list from .vrs blob (base + offset)\r
 174         ids = (uint16_t far*)(vrs_cont->buffer +\r
 175                 vrs_cont->vrs_hdr->offset_table[VRS_HEADER_OFFSET_SPRITE_ID_LIST]);\r
 176 \r
 177         // Loop through the id list until we found the right one or hit the end of the list\r
 178         // Counter is keeping track of the offset(in ids/vrl blobs)\r
 179         while(ids[counter] != id && ids[counter]){\r
 180                 counter++;\r
 181         }\r
 182         // Return -2 if we couldn't find the requested id\r
 183         if(!ids[counter]){\r
 184                 // Error message?\r
 185                 return -2;\r
 186         }\r
 187 \r
 188         // Get vrl offsets list from .vrs blob (base + offset)\r
 189         vrl_offs_list = (uint32_t far *)(vrs_cont->buffer +\r
 190                                         vrs_cont->vrs_hdr->offset_table[VRS_HEADER_OFFSET_VRS_LIST]);\r
 191 \r
 192         // Get vrl_header from .vrs (base + offset from vrl_list)\r
 193         // Counter is number of vrls to skip (ids and vrls are aligned according to the .vrs specification)\r
 194         vrl_cont->vrl_header = (struct vrl1_vgax_header far *)(vrs_cont->buffer + vrl_offs_list[counter]);\r
 195 \r
 196         // Get .vrl size by integer arithmetics (next vrl offset - current vrl offset)\r
 197         if(ids[counter+1]){\r
 198                 vrl_cont->data_size = vrl_offs_list[counter+1] - vrl_offs_list[counter] - sizeof(struct vrl1_vgax_header);\r
 199         }\r
 200         // If we are retriving the last vrl, size is ids_list offset - current vrl offset, as next vrl offs is 0\r
 201         else{\r
 202                 vrl_cont->data_size = vrs_cont->vrs_hdr->offset_table[VRS_HEADER_OFFSET_SPRITE_ID_LIST] - vrl_offs_list[counter] - sizeof(struct vrl1_vgax_header);\r
 203         }\r
 204 \r
 205         // Retrive line offsets form .vrs\r
 206         vrl_cont->line_offsets = vrs_cont->vrl_line_offsets[counter];\r
 207 \r
 208         return 0;\r
 209 }\r