libass/ass_utils.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 "config.h"
  24
  25 #include <stdlib.h>
  26 #include <inttypes.h>
  27 #include <ft2build.h>
  28 #include FT_GLYPH_H
  29
  30 #include "mputils.h"
  31 #include "ass_utils.h"
  32
  33 int mystrtoi(char** p, int* res)
  34 {
  35         // NOTE: base argument is ignored, but not used in libass anyway
  36         double temp_res;
  37         char* start = *p;
  38         temp_res = strtod(*p, p);
  39         *res = (int) (temp_res + 0.5);
  40         if (*p != start) return 1;
  41         else return 0;
  42 }
  43
  44 int mystrtoll(char** p, long long* res)
  45 {
  46         double temp_res;
  47         char* start = *p;
  48         temp_res = strtod(*p, p);
  49         *res = (long long) (temp_res + 0.5);
  50         if (*p != start) return 1;
  51         else return 0;
  52 }
  53
  54 int mystrtou32(char** p, int base, uint32_t* res)
  55 {
  56         char* start = *p;
  57         *res = strtoll(*p, p, base);
  58         if (*p != start) return 1;
  59         else return 0;
  60 }
  61
  62 int mystrtod(char** p, double* res)
  63 {
  64         char* start = *p;
  65         *res = strtod(*p, p);
  66         if (*p != start) return 1;
  67         else return 0;
  68 }
  69
  70 int strtocolor(char** q, uint32_t* res)
  71 {
  72         uint32_t color = 0;
  73         int result;
  74         char* p = *q;
  75
  76         if (*p == '&') ++p;
  77         else mp_msg(MSGT_ASS, MSGL_DBG2, "suspicious color format: \"%s\"\n", p);
  78
  79         if (*p == 'H' || *p == 'h') {
  80                 ++p;
  81                 result = mystrtou32(&p, 16, &color);
  82         } else {
  83                 result = mystrtou32(&p, 0, &color);
  84         }
  85
  86         {
  87                 unsigned char* tmp = (unsigned char*)(&color);
  88                 unsigned char b;
  89                 b = tmp[0]; tmp[0] = tmp[3]; tmp[3] = b;
  90                 b = tmp[1]; tmp[1] = tmp[2]; tmp[2] = b;
  91         }
  92         if (*p == '&') ++p;
  93         *q = p;
  94
  95         *res = color;
  96         return result;
  97 }
  98
  99 // Return a boolean value for a string
 100 char parse_bool(char* str) {
 101         while (*str == ' ' || *str == '\t')
 102                 str++;
 103         if (!strncasecmp(str, "yes", 3))
 104                 return 1;
 105         else if (strtol(str, NULL, 10) > 0)
 106                 return 1;
 107         return 0;
 108 }
 109
 110 #if 0
 111 static void sprint_tag(uint32_t tag, char* dst)
 112 {
 113         dst[0] = (tag >> 24) & 0xFF;
 114         dst[1] = (tag >> 16) & 0xFF;
 115         dst[2] = (tag >> 8) & 0xFF;
 116         dst[3] = tag & 0xFF;
 117         dst[4] = 0;
 118 }
 119
 120 void dump_glyph(FT_Glyph g)
 121 {
 122         char tag[5];
 123         int i;
 124         FT_OutlineGlyph og = (FT_OutlineGlyph)g;
 125         FT_Outline* o = &(og->outline);
 126         sprint_tag(g->format, tag);
 127         printf("glyph: %p \n", g);
 128         printf("format: %s \n", tag);
 129         printf("outline: %p \n", o);
 130         printf("contours: %d, points: %d, points ptr: %p \n", o->n_contours, o->n_points, o->points);
 131         for (i = 0; i < o->n_points; ++i) {
 132                 printf("  point %f, %f \n", d6_to_double(o->points[i].x), d6_to_double(o->points[i].y));
 133         }
 134 }
 135 #endif