X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fcutils.c;h=7e76d3b9ea4872b6396d21ec47c23c86b03e8822;hb=ba32c8dfd9efd5a9e595e4575425d39a333057fb;hp=c31e5b5c178e76eb2ad055d6ee3f500b56fff535;hpb=f71869a4db1d20dd93cb6a37ba8ef1249812c864;p=ffmpeg

diff --git a/libavformat/cutils.c b/libavformat/cutils.c
index c31e5b5c178..7e76d3b9ea4 100644
--- a/libavformat/cutils.c
+++ b/libavformat/cutils.c
@@ -14,7 +14,7 @@
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 #include "avformat.h"
 
@@ -59,7 +59,7 @@ int stristart(const char *str, const char *val, const char **ptr)
     p = str;
     q = val;
     while (*q != '\0') {
-	if (toupper(*(const unsigned char *)p) != toupper(*(const unsigned char *)q))
+        if (toupper(*(const unsigned char *)p) != toupper(*(const unsigned char *)q))
             return 0;
         p++;
         q++;
@@ -74,7 +74,7 @@ int stristart(const char *str, const char *val, const char **ptr)
  * 1 then it is clamped to buf_size - 1.
  * NOTE: this function does what strncpy should have done to be
  * useful. NEVER use strncpy.
- * 
+ *
  * @param buf destination buffer
  * @param buf_size size of destination buffer
  * @param str source string
@@ -101,7 +101,7 @@ char *pstrcat(char *buf, int buf_size, const char *s)
 {
     int len;
     len = strlen(buf);
-    if (len < buf_size) 
+    if (len < buf_size)
         pstrcpy(buf + len, buf_size - len, s);
     return buf;
 }
@@ -139,7 +139,7 @@ time_t mktimegm(struct tm *tm)
         y--;
     }
 
-    t = 86400 * 
+    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;
@@ -147,6 +147,40 @@ time_t mktimegm(struct tm *tm)
     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)
+{
+    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 >= (ISLEAP(y)?366:365)) {
+        ny = (y + days/366);
+        days -= (ny - y) * 365 + LEAPS_COUNT(ny - 1) - LEAPS_COUNT(y - 1);
+        y = ny;
+    }
+    md[1] = ISLEAP(y)?29:28;
+    for (m=0; days >= md[m]; m++)
+         days -= md[m];
+
+    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;
+
+    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,
@@ -174,7 +208,7 @@ static int date_get_num(const char **pp,
 }
 
 /* small strptime for ffmpeg */
-const char *small_strptime(const char *p, const char *fmt, 
+const char *small_strptime(const char *p, const char *fmt,
                            struct tm *dt)
 {
     int c, val;