libass/ass_library.c

   1 // -*- c-basic-offset: 8; indent-tabs-mode: t -*-
   2 // vim:ts=8:sw=8:noet:ai:
   3 /*
   4   Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
   5
   6   This program is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation; either version 2 of the License, or
   9   (at your option) any later version.
  10
  11   This program is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with this program; if not, write to the Free Software
  18   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19 */
  20
  21 #include <inttypes.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 #include "ass.h"
  27 #include "ass_library.h"
  28
  29
  30 ass_library_t* ass_library_init(void)
  31 {
  32         return calloc(1, sizeof(ass_library_t));
  33 }
  34
  35 void ass_library_done(ass_library_t* priv)
  36 {
  37         if (priv) {
  38                 ass_set_fonts_dir(priv, NULL);
  39                 ass_set_style_overrides(priv, NULL);
  40                 ass_clear_fonts(priv);
  41                 free(priv);
  42         }
  43 }
  44
  45 void ass_set_fonts_dir(ass_library_t* priv, const char* fonts_dir)
  46 {
  47         if (priv->fonts_dir)
  48                 free(priv->fonts_dir);
  49
  50         priv->fonts_dir = fonts_dir ? strdup(fonts_dir) : 0;
  51 }
  52
  53 void ass_set_extract_fonts(ass_library_t* priv, int extract)
  54 {
  55         priv->extract_fonts = !!extract;
  56 }
  57
  58 void ass_set_style_overrides(ass_library_t* priv, char** list)
  59 {
  60         char** p;
  61         char** q;
  62         int cnt;
  63
  64         if (priv->style_overrides) {
  65                 for (p = priv->style_overrides; *p; ++p)
  66                         free(*p);
  67                 free(priv->style_overrides);
  68         }
  69
  70         if (!list) return;
  71
  72         for (p = list, cnt = 0; *p; ++p, ++cnt) {}
  73
  74         priv->style_overrides = malloc((cnt + 1) * sizeof(char*));
  75         for (p = list, q = priv->style_overrides; *p; ++p, ++q)
  76                 *q = strdup(*p);
  77         priv->style_overrides[cnt] = NULL;
  78 }
  79
  80 static void grow_array(void **array, int nelem, size_t elsize)
  81 {
  82         if (!(nelem & 31))
  83                 *array = realloc(*array, (nelem + 32) * elsize);
  84 }
  85
  86 void ass_add_font(ass_library_t* priv, char* name, char* data, int size)
  87 {
  88         int idx = priv->num_fontdata;
  89         if (!name || !data || !size)
  90                 return;
  91         grow_array((void**)&priv->fontdata, priv->num_fontdata, sizeof(*priv->fontdata));
  92
  93         priv->fontdata[idx].name = strdup(name);
  94
  95         priv->fontdata[idx].data = malloc(size);
  96         memcpy(priv->fontdata[idx].data, data, size);
  97
  98         priv->fontdata[idx].size = size;
  99
 100         priv->num_fontdata ++;
 101 }
 102
 103 void ass_clear_fonts(ass_library_t* priv)
 104 {
 105         int i;
 106         for (i = 0; i < priv->num_fontdata; ++i) {
 107                 free(priv->fontdata[i].name);
 108                 free(priv->fontdata[i].data);
 109         }
 110         free(priv->fontdata);
 111         priv->fontdata = NULL;
 112         priv->num_fontdata = 0;
 113 }