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