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 \r
  39         switch(rlsw)\r
  40         {\r
  41                 case 1:\r
  42                         CA_ReadFile(filename, MEMPTRCONV enti->spri.spritesheet.spribuff, gvar);\r
  43                 break;\r
  44                 case 0:\r
  45                         CA_LoadFile(filename, MEMPTRCONV enti->spri.spritesheet.spribuff, gvar);\r
  46                 break;\r
  47         }\r
  48 \r
  49         // Insert sanity cheks later\r
  50         enti->spri.spritesheet.buffer = enti->spri.spritesheet.spribuff;        //TODO: merge these 2 vars into 1\r
  51         enti->spri.spritesheet.data_size = sizeof(enti->spri.spritesheet.buffer) - sizeof(struct vrl1_vgax_header);\r
  52         num_of_vrl = 0;\r
  53         vrl_id_iter = (uint16_t far *)(enti->spri.spritesheet.buffer + enti->spri.spritesheet.vrs_hdr->offset_table[VRS_HEADER_OFFSET_SPRITE_ID_LIST]);\r
  54         while(vrl_id_iter[num_of_vrl]){\r
  55                 num_of_vrl++;\r
  56         }\r
  57 \r
  58         // Allocate memory for vrl line offsets table\r
  59 #ifndef VRS_USECAMMPM\r
  60         vrl_line_offsets = malloc(sizeof(vrl1_vgax_offset_t *)*num_of_vrl);//TODO: USE MM_ CA_ AND PM_\r
  61 #else\r
  62         switch(rlsw)\r
  63         {\r
  64                 case 0:\r
  65 #ifdef __DEBUG_MM__\r
  66                         dbg_debugmm=0;\r
  67 #endif\r
  68                         MM_GetPtr(MEMPTRCONV gvar->ca.grsegs, sizeof(vrl1_vgax_offset_t *)*num_of_vrl, gvar);\r
  69                         enti->spri.spritesheet.vrl_line_offsets = (vrl1_vgax_offset_t **)gvar->ca.grsegs;\r
  70                 break;\r
  71         }\r
  72 #endif\r
  73 \r
  74         vrl_headers_offsets = (uint32_t far *)(enti->spri.spritesheet.buffer + enti->spri.spritesheet.vrs_hdr->offset_table[VRS_HEADER_OFFSET_VRS_LIST]);\r
  75         // Calculate line offsets for each vrl\r
  76         for(i = 0; i < num_of_vrl; i++){\r
  77                 curr_vrl = (struct vrl1_vgax_header far *)(enti->spri.spritesheet.buffer + vrl_headers_offsets[i]);\r
  78 \r
  79                 // Calc. vrl size as (next_offset - curr_offset)\r
  80                 if (i != num_of_vrl - 1){\r
  81                         vrl_size = vrl_headers_offsets[i+1] - vrl_headers_offsets[i] - sizeof(struct vrl1_vgax_header);\r
  82                 }\r
  83                 // If it's the last vrl, size is (next_vrs_struct_offset - curr_offset)\r
  84                 else{\r
  85                         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
  86                 }\r
  87 #ifndef VRS_USECAMMPM\r
  88                 vrl_line_offsets[i] = vrl1_vgax_genlineoffsets(curr_vrl, (byte *)curr_vrl + sizeof(struct vrl1_vgax_header), vrl_size);\r
  89 #else\r
  90                 enti->spri.spritesheet.vrl_line_offsets[i] = vrl1_vgax_genlineoffsets(curr_vrl, (byte *)curr_vrl + sizeof(struct vrl1_vgax_header), vrl_size);\r
  91 #endif\r
  92         }\r
  93 #ifndef VRS_USECAMMPM\r
  94         enti->spri.spritesheet.vrl_line_offsets = vrl_line_offsets;\r
  95 #endif\r
  96 //      printf("VRS_OpenVRS\n");\r
  97 //      printf("        vrl_size=%lu\n\n",vrl_size);\r
  98 }\r
  99 \r
 100 #if 0\r
 101 //\r
 102 void VRS_ReadVRL(char *filename, entity_t *enti, global_game_variables_t *gvar){        VRS_OpenVRL(filename, enti, 1, gvar);   }\r
 103 void VRS_LoadVRL(char *filename, entity_t *enti, global_game_variables_t *gvar){        VRS_OpenVRL(filename, enti, 0, gvar);   }\r
 104 void VRS_OpenVRL(char *filename, entity_t *enti, boolean rlsw, global_game_variables_t *gvar)\r
 105 {\r
 106 #ifndef VRL_USECAMMPM\r
 107         vrl1_vgax_offset_t *line_offsets;\r
 108 #endif\r
 109 //      uint32_t far *vrl_headers_offsets;\r
 110         struct vrl1_vgax_header far *curr_vrl;\r
 111 \r
 112         switch(rlsw)\r
 113         {\r
 114                 case 1:\r
 115                         CA_ReadFile(filename, &enti->spri.spritesheet.spribuff, gvar);\r
 116                 break;\r
 117                 case 0:\r
 118                         CA_LoadFile(filename, &enti->spri.spritesheet.spribuff, gvar);\r
 119                 break;\r
 120         }\r
 121 \r
 122         // Insert sanity cheks later\r
 123         enti->spri.sprite_vrl_cont.buffer = enti->spri.spritesheet.spribuff;\r
 124         enti->spri.sprite_vrl_cont.data_size = sizeof(enti->spri.spritesheet.buffer) - sizeof(struct vrl1_vgax_header);\r
 125 \r
 126         // Allocate memory for vrl line offsets table\r
 127 #ifndef VRL_USECAMMPM\r
 128         line_offsets = malloc(sizeof(vrl1_vgax_offset_t *));//TODO: USE MM_ CA_ AND PM_\r
 129 #else\r
 130         MM_GetPtr(MEMPTRCONV gvar->ca.grsegs[0], sizeof(vrl1_vgax_offset_t *), gvar);\r
 131         enti->spri.sprite_vrl_cont.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[VRL_HEADER_OFFSET_VRL_LIST]);\r
 135         // Calculate line offsets for each vrl\r
 136                 curr_vrl = (struct vrl1_vgax_header far *)(enti->spri.sprite_vrl_cont.buffer);// + vrl_headers_offsets);\r
 137 \r
 138 #ifndef VRL_USECAMMPM\r
 139                 line_offsets = vrl1_vgax_genlineoffsets(curr_vrl, (byte *)curr_vrl + sizeof(struct vrl1_vgax_header), sizeof(enti->spri.spritesheet.buffer));\r
 140 #else\r
 141                 enti->spri.sprite_vrl_cont.line_offsets = vrl1_vgax_genlineoffsets(curr_vrl, (byte *)curr_vrl + sizeof(struct vrl1_vgax_header), sizeof(enti->spri.spritesheet.buffer));\r
 142 #endif\r
 143 \r
 144 #ifndef VRL_USECAMMPM\r
 145         enti->spri.sprite_vrl_cont.line_offsets = line_offsets;\r
 146 #endif\r
 147         printf("VRS_OpenVRL\n");\r
 148         printf("        vrl_size=%lu\n\n",sizeof(enti->spri.spritesheet.buffer));\r
 149 }\r
 150 //\r
 151 #endif\r
 152 \r
 153 // Seek and return a specified .vrl blob from .vrs blob in far memory\r
 154 int get_vrl_by_id(struct vrs_container far *vrs_cont, uint16_t id, struct vrl_container *vrl_cont){\r
 155         uint16_t far *ids;\r
 156         uint32_t far *vrl_offs_list;\r
 157         int counter = 0;\r
 158 \r
 159         // If id is invalid, return -1\r
 160         if(id == 0){\r
 161                 // Probably add an error message?\r
 162                 return -1;\r
 163         }\r
 164 \r
 165         // Get id list from .vrs blob (base + offset)\r
 166         ids = (uint16_t far*)(vrs_cont->buffer +\r
 167                 vrs_cont->vrs_hdr->offset_table[VRS_HEADER_OFFSET_SPRITE_ID_LIST]);\r
 168 \r
 169         // Loop through the id list until we found the right one or hit the end of the list\r
 170         // Counter is keeping track of the offset(in ids/vrl blobs)\r
 171         while(ids[counter] != id && ids[counter]){\r
 172                 counter++;\r
 173         }\r
 174         // Return -2 if we couldn't find the requested id\r
 175         if(!ids[counter]){\r
 176                 // Error message?\r
 177                 return -2;\r
 178         }\r
 179 \r
 180         // Get vrl offsets list from .vrs blob (base + offset)\r
 181         vrl_offs_list = (uint32_t far *)(vrs_cont->buffer +\r
 182                                         vrs_cont->vrs_hdr->offset_table[VRS_HEADER_OFFSET_VRS_LIST]);\r
 183 \r
 184         // Get vrl_header from .vrs (base + offset from vrl_list)\r
 185         // Counter is number of vrls to skip (ids and vrls are aligned according to the .vrs specification)\r
 186         vrl_cont->vrl_header = (struct vrl1_vgax_header far *)(vrs_cont->buffer + vrl_offs_list[counter]);\r
 187 \r
 188         // Get .vrl size by integer arithmetics (next vrl offset - current vrl offset)\r
 189         if(ids[counter+1]){\r
 190                 vrl_cont->data_size = vrl_offs_list[counter+1] - vrl_offs_list[counter] - sizeof(struct vrl1_vgax_header);\r
 191         }\r
 192         // If we are retriving the last vrl, size is ids_list offset - current vrl offset, as next vrl offs is 0\r
 193         else{\r
 194                 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
 195         }\r
 196 \r
 197         // Retrive line offsets form .vrs\r
 198         vrl_cont->line_offsets = vrs_cont->vrl_line_offsets[counter];\r
 199 \r
 200         return 0;\r
 201 }\r