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 file is part of libass.
   7  *
   8  * libass is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * libass is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with libass; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #include <inttypes.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include "ass.h"
  29 #include "ass_library.h"
  30
  31
  32 ass_library_t* ass_library_init(void)
  33 {
  34         return calloc(1, sizeof(ass_library_t));
  35 }
  36
  37 void ass_library_done(ass_library_t* priv)
  38 {
  39         if (priv) {
  40                 ass_set_fonts_dir(priv, NULL);
  41                 ass_set_style_overrides(priv, NULL);
  42                 ass_clear_fonts(priv);
  43                 free(priv);
  44         }
  45 }
  46
  47 void ass_set_fonts_dir(ass_library_t* priv, const char* fonts_dir)
  48 {
  49         if (priv->fonts_dir)
  50                 free(priv->fonts_dir);
  51
  52         priv->fonts_dir = fonts_dir ? strdup(fonts_dir) : 0;
  53 }
  54
  55 void ass_set_extract_fonts(ass_library_t* priv, int extract)
  56 {
  57         priv->extract_fonts = !!extract;
  58 }
  59
  60 void ass_set_style_overrides(ass_library_t* priv, char** list)
  61 {
  62         char** p;
  63         char** q;
  64         int cnt;
  65
  66         if (priv->style_overrides) {
  67                 for (p = priv->style_overrides; *p; ++p)
  68                         free(*p);
  69                 free(priv->style_overrides);
  70         }
  71
  72         if (!list) return;
  73
  74         for (p = list, cnt = 0; *p; ++p, ++cnt) {}
  75
  76         priv->style_overrides = malloc((cnt + 1) * sizeof(char*));
  77         for (p = list, q = priv->style_overrides; *p; ++p, ++q)
  78                 *q = strdup(*p);
  79         priv->style_overrides[cnt] = NULL;
  80 }
  81
  82 static void grow_array(void **array, int nelem, size_t elsize)
  83 {
  84         if (!(nelem & 31))
  85                 *array = realloc(*array, (nelem + 32) * elsize);
  86 }
  87
  88 void ass_add_font(ass_library_t* priv, char* name, char* data, int size)
  89 {
  90         int idx = priv->num_fontdata;
  91         if (!name || !data || !size)
  92                 return;
  93         grow_array((void**)&priv->fontdata, priv->num_fontdata, sizeof(*priv->fontdata));
  94
  95         priv->fontdata[idx].name = strdup(name);
  96
  97         priv->fontdata[idx].data = malloc(size);
  98         memcpy(priv->fontdata[idx].data, data, size);
  99
 100         priv->fontdata[idx].size = size;
 101
 102         priv->num_fontdata ++;
 103 }
 104
 105 void ass_clear_fonts(ass_library_t* priv)
 106 {
 107         int i;
 108         for (i = 0; i < priv->num_fontdata; ++i) {
 109                 free(priv->fontdata[i].name);
 110                 free(priv->fontdata[i].data);
 111         }
 112         free(priv->fontdata);
 113         priv->fontdata = NULL;
 114         priv->num_fontdata = 0;
 115 }