libass/ass_utils.h

   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 #ifndef __ASS_UTILS_H__
  22 #define __ASS_UTILS_H__
  23
  24 int mystrtoi(char** p, int base, int* res);
  25 int mystrtou32(char** p, int base, uint32_t* res);
  26 int mystrtod(char** p, double* res);
  27 int strtocolor(char** q, uint32_t* res);
  28
  29 static inline int d6_to_int(int x) {
  30         return (x + 32) >> 6;
  31 }
  32 static inline int d16_to_int(int x) {
  33         return (x + 32768) >> 16;
  34 }
  35 static inline int int_to_d6(int x) {
  36         return x << 6;
  37 }
  38 static inline int int_to_d16(int x) {
  39         return x << 16;
  40 }
  41 static inline int d16_to_d6(int x) {
  42         return (x + 512) >> 10;
  43 }
  44 static inline int d6_to_d16(int x) {
  45         return x << 10;
  46 }
  47 static inline double d6_to_double(int x) {
  48         return x / 64.;
  49 }
  50 static inline int double_to_d6(double x) {
  51         return (int)(x * 64);
  52 }
  53 static inline double d16_to_double(int x) {
  54         return ((double)x) / 0x10000;
  55 }
  56 static inline int double_to_d16(double x) {
  57         return (int)(x * 0x10000);
  58 }
  59
  60 #endif
  61