145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
/*
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* Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
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*
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* This file is part of libass.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef LIBASS_UTILS_H
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#define LIBASS_UTILS_H
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#ifdef CONFIG_ENCA
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#include <enca.h>
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#endif
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#include "ass.h"
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#define MSGL_FATAL 0
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#define MSGL_ERR 1
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#define MSGL_WARN 2
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#define MSGL_INFO 4
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#define MSGL_V 6
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#define MSGL_DBG2 7
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#define FFMAX(a,b) ((a) > (b) ? (a) : (b))
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#define FFMIN(a,b) ((a) > (b) ? (b) : (a))
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#define FFMINMAX(c,a,b) FFMIN(FFMAX(c, a), b)
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int mystrtoi(char **p, int *res);
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int mystrtoll(char **p, long long *res);
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int mystrtou32(char **p, int base, uint32_t *res);
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int mystrtod(char **p, double *res);
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int strtocolor(ASS_Library *library, char **q, uint32_t *res, int hex);
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char parse_bool(char *str);
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unsigned ass_utf8_get_char(char **str);
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void ass_msg(ASS_Library *priv, int lvl, char *fmt, ...);
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#ifdef CONFIG_ENCA
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void *ass_guess_buffer_cp(ASS_Library *library, unsigned char *buffer,
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int buflen, char *preferred_language,
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char *fallback);
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#endif
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/* defined in ass_strtod.c */
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double ass_strtod(const char *string, char **endPtr);
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static inline int d6_to_int(int x)
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{
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return (x + 32) >> 6;
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}
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static inline int d16_to_int(int x)
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{
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return (x + 32768) >> 16;
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}
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static inline int int_to_d6(int x)
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{
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return x << 6;
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}
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static inline int int_to_d16(int x)
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{
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return x << 16;
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}
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static inline int d16_to_d6(int x)
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{
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return (x + 512) >> 10;
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}
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static inline int d6_to_d16(int x)
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{
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return x << 10;
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}
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static inline double d6_to_double(int x)
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{
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return x / 64.;
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}
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static inline int double_to_d6(double x)
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{
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return (int) (x * 64);
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}
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static inline double d16_to_double(int x)
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{
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return ((double) x) / 0x10000;
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}
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static inline int double_to_d16(double x)
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{
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return (int) (x * 0x10000);
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}
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static inline double d22_to_double(int x)
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{
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return ((double) x) / 0x400000;
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}
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static inline int double_to_d22(double x)
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{
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return (int) (x * 0x400000);
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}
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// Calculate cache key for a rotational angle in degrees
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static inline int rot_key(double a)
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{
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const int m = double_to_d22(360.0);
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return double_to_d22(a) % m;
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}
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#define FNV1_32A_INIT (unsigned)0x811c9dc5
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static inline unsigned fnv_32a_buf(void *buf, size_t len, unsigned hval)
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{
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unsigned char *bp = buf;
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unsigned char *be = bp + len;
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while (bp < be) {
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hval ^= (unsigned) *bp++;
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hval +=
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(hval << 1) + (hval << 4) + (hval << 7) + (hval << 8) +
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(hval << 24);
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}
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return hval;
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}
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static inline unsigned fnv_32a_str(char *str, unsigned hval)
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{
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unsigned char *s = (unsigned char *) str;
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while (*s) {
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hval ^= (unsigned) *s++;
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hval +=
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(hval << 1) + (hval << 4) + (hval << 7) + (hval << 8) +
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(hval << 24);
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}
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return hval;
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}
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#endif /* LIBASS_UTILS_H */
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