/*
- * Various simple utilities for ffmpeg system
+ * various simple utilities for libavformat
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+#include "libavutil/time_internal.h"
#include "avformat.h"
+#include "internal.h"
/* add one element to a dynamic array */
void ff_dynarray_add(intptr_t **tab_ptr, int *nb_ptr, intptr_t elem)
{
+ /* see similar avconv.c:grow_array() */
int nb, nb_alloc;
intptr_t *tab;
*nb_ptr = nb;
}
-time_t mktimegm(struct tm *tm)
-{
- time_t t;
-
- int y = tm->tm_year + 1900, m = tm->tm_mon + 1, d = tm->tm_mday;
-
- if (m < 3) {
- m += 12;
- y--;
- }
-
- t = 86400 *
- (d + (153 * m - 457) / 5 + 365 * y + y / 4 - y / 100 + y / 400 - 719469);
-
- t += 3600 * tm->tm_hour + 60 * tm->tm_min + tm->tm_sec;
-
- return t;
-}
-
#define ISLEAP(y) (((y) % 4 == 0) && (((y) % 100) != 0 || ((y) % 400) == 0))
#define LEAPS_COUNT(y) ((y)/4 - (y)/100 + (y)/400)
/* This is our own gmtime_r. It differs from its POSIX counterpart in a
couple of places, though. */
-struct tm *brktimegm(time_t secs, struct tm *tm)
+struct tm *ff_brktimegm(time_t secs, struct tm *tm)
{
- int days, y, ny, m;
- int md[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
-
- days = secs / 86400;
- secs %= 86400;
- tm->tm_hour = secs / 3600;
- tm->tm_min = (secs % 3600) / 60;
- tm->tm_sec = secs % 60;
-
- /* oh well, may be someone some day will invent a formula for this stuff */
- y = 1970; /* start "guessing" */
- while (days > 365) {
- ny = (y + days/366);
- days -= (ny - y) * 365 + LEAPS_COUNT(ny - 1) - LEAPS_COUNT(y - 1);
- y = ny;
- }
- if (days==365 && !ISLEAP(y)) { days=0; y++; }
- md[1] = ISLEAP(y)?29:28;
- for (m=0; days >= md[m]; m++)
- days -= md[m];
+ tm = gmtime_r(&secs, tm);
- tm->tm_year = y; /* unlike gmtime_r we store complete year here */
- tm->tm_mon = m+1; /* unlike gmtime_r tm_mon is from 1 to 12 */
- tm->tm_mday = days+1;
+ tm->tm_year += 1900; /* unlike gmtime_r we store complete year here */
+ tm->tm_mon += 1; /* unlike gmtime_r tm_mon is from 1 to 12 */
return tm;
}
-
-/* get a positive number between n_min and n_max, for a maximum length
- of len_max. Return -1 if error. */
-static int date_get_num(const char **pp,
- int n_min, int n_max, int len_max)
-{
- int i, val, c;
- const char *p;
-
- p = *pp;
- val = 0;
- for(i = 0; i < len_max; i++) {
- c = *p;
- if (!isdigit(c))
- break;
- val = (val * 10) + c - '0';
- p++;
- }
- /* no number read ? */
- if (p == *pp)
- return -1;
- if (val < n_min || val > n_max)
- return -1;
- *pp = p;
- return val;
-}
-
-/* small strptime for ffmpeg */
-const char *small_strptime(const char *p, const char *fmt,
- struct tm *dt)
-{
- int c, val;
-
- for(;;) {
- c = *fmt++;
- if (c == '\0') {
- return p;
- } else if (c == '%') {
- c = *fmt++;
- switch(c) {
- case 'H':
- val = date_get_num(&p, 0, 23, 2);
- if (val == -1)
- return NULL;
- dt->tm_hour = val;
- break;
- case 'M':
- val = date_get_num(&p, 0, 59, 2);
- if (val == -1)
- return NULL;
- dt->tm_min = val;
- break;
- case 'S':
- val = date_get_num(&p, 0, 59, 2);
- if (val == -1)
- return NULL;
- dt->tm_sec = val;
- break;
- case 'Y':
- val = date_get_num(&p, 0, 9999, 4);
- if (val == -1)
- return NULL;
- dt->tm_year = val - 1900;
- break;
- case 'm':
- val = date_get_num(&p, 1, 12, 2);
- if (val == -1)
- return NULL;
- dt->tm_mon = val - 1;
- break;
- case 'd':
- val = date_get_num(&p, 1, 31, 2);
- if (val == -1)
- return NULL;
- dt->tm_mday = val;
- break;
- case '%':
- goto match;
- default:
- return NULL;
- }
- } else {
- match:
- if (c != *p)
- return NULL;
- p++;
- }
- }
- return p;
-}
-
projects / ffmpeg / blobdiff