simpler strptime - added os_support.[ch] - moved localtime_r to os_support.c

Originally committed as revision 2228 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/Makefile

@@ -8,7 +8,7 @@ VPATH=$(SRC_PATH)/libavformat
 
 CFLAGS= $(OPTFLAGS) -Wall -g -I.. -I$(SRC_PATH) -I$(SRC_PATH)/libavcodec -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_GNU_SOURCE
 
-OBJS= utils.o cutils.o allformats.o
+OBJS= utils.o cutils.o os_support.o allformats.o
 PPOBJS=
 
 # mux and demuxes
@@ -31,14 +31,6 @@ OBJS+= pnm.o yuv.o png.o jpeg.o gifdec.o
 OBJS+= avio.o aviobuf.o file.o 
 OBJS+= framehook.o 
 
-ifeq ($(BUILD_STRPTIME),yes)
-OBJS+= strptime.o
-endif
-
-ifeq ($(BUILD_LOCALTIME_R),yes)
-OBJS+= localtime_r.o
-endif
-
 ifeq ($(CONFIG_VIDEO4LINUX),yes)
 OBJS+= grab.o
 endif

libavformat/avformat.h

@@ -12,6 +12,8 @@ extern "C" {
 
 #define LIBAVFORMAT_IDENT	"FFmpeg" LIBAVFORMAT_VERSION "b" LIBAVFORMAT_BUILD_STR
 
+#include <time.h>
+
 #include "avcodec.h"
 
 #include "avio.h"
@@ -487,6 +489,9 @@ int audio_init(void);
 int dv1394_init(void);
 
 #ifdef HAVE_AV_CONFIG_H
+
+#include "os_support.h"
+
 int strstart(const char *str, const char *val, const char **ptr);
 int stristart(const char *str, const char *val, const char **ptr);
 void pstrcpy(char *buf, int buf_size, const char *str);
@@ -502,6 +507,10 @@ do {\
     __dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
 } while(0)
 
+time_t mktimegm(struct tm *tm);
+const char *small_strptime(const char *p, const char *fmt, 
+                           struct tm *dt);
+
 struct in_addr;
 int resolve_host(struct in_addr *sin_addr, const char *hostname);
 

libavformat/cutils.c

@@ -128,3 +128,112 @@ void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem)
     *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;
+}
+
+/* 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;
+}
+

libavformat/localtime_r.c

-/* Convert a string representation of time to a time value.
-   Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library 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
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include "localtime_r.h"
-
-#if !defined(HAVE_LOCALTIME_R)
-/* Approximate localtime_r as best we can in its absence.  */
-#include <time.h>
-
-struct tm *
-localtime_r (t, tp)
-     const time_t *t;
-     struct tm *tp;
-{
-  struct tm *l = localtime (t);
-  if (! l)
-    return 0;
-  *tp = *l;
-  return tp;
-}
-#endif /* !defined(HAVE_LOCALTIME_R) */
-

libavformat/localtime_r.h

-/* Convert a string representation of time to a time value.
-   Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C Library 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
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-#ifndef __LOCALTIME_R_H__
-#define __LOCALTIME_R_H__
-
-/*
- * Version of "localtime_r()", for the benefit of OSes that don't have it.
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#if !defined(HAVE_LOCALTIME_R)
-#include <time.h>
-/* Approximate localtime_r as best we can in its absence.  */
-# define localtime_r my_localtime_r
-extern struct tm *localtime_r(const time_t *, struct tm *);
-#endif
-
-#endif

libavformat/strptime.h → libavformat/os_support.c

 /*
- * Copyright (C) 2003 the ffmpeg project
+ * Various utilities for ffmpeg system
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -14,12 +15,43 @@
  * 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
- *
  */
+#include "avformat.h"
+#ifdef CONFIG_WIN32
+#include <sys/types.h>
+#include <sys/timeb.h>
+#elif defined(CONFIG_OS2)
+#include <string.h>
+#include <sys/time.h>
+#else
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/time.h>
+#endif
+#include <time.h>
 
-#ifndef STRPTIME_H
-#define STRPTIME_H
-
-extern char *strptime(const char *, const char *, struct tm *);
+int64_t av_gettime(void)
+{
+#ifdef CONFIG_WIN32
+    struct _timeb tb;
+    _ftime(&tb);
+    return ((int64_t)tb.time * int64_t_C(1000) + (int64_t)tb.millitm) * int64_t_C(1000);
+#else
+    struct timeval tv;
+    gettimeofday(&tv,NULL);
+    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
+#endif
+}
 
-#endif // STRPTIME_H
+#if !defined(HAVE_LOCALTIME_R)
+struct tm *localtime_r(const time_t *t, struct tm *tp)
+{
+    struct tm *l;
+    
+    l = localtime(t);
+    if (!l)
+        return 0;
+    *tp = *l;
+    return tp;
+}
+#endif /* !defined(HAVE_LOCALTIME_R) */

libavformat/os_support.h

+#ifndef _OS_SUPPORT_H
+#define _OS_SUPPORT_H
+
+/**
+ * @file os_support.h
+ * miscellaneous OS support macros and functions.
+ *
+ * - usleep() (Win32, BeOS, OS/2)
+ * - floatf() (OS/2)
+ * - strcasecmp() (OS/2)
+ */
+
+#ifdef __MINGW32__
+#  undef DATADIR /* clashes with /usr/include/w32api/objidl.h */
+__declspec(dllimport) void __stdcall Sleep(unsigned long dwMilliseconds);
+// #  include <windows.h>
+#  define usleep(t)    Sleep((t) / 1000)
+#endif
+
+#ifdef __BEOS__
+#  ifndef usleep
+#    include <OS.h>
+#    define usleep(t)  snooze((bigtime_t)(t))
+#  endif
+#endif
+
+#if defined(CONFIG_OS2)
+#include <stdlib.h>
+static inline int usleep(unsigned int t) { return _sleep2(t / 1000); }
+static inline int strcasecmp(const char* s1, const char* s2) { return stricmp(s1,s2); }
+#endif
+
+#endif /* _OS_SUPPORT_H */

libavformat/utils.c

@@ -17,24 +17,6 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 #include "avformat.h"
-#ifdef CONFIG_WIN32
-#define strcasecmp _stricmp
-#include <sys/types.h>
-#include <sys/timeb.h>
-#elif defined(CONFIG_OS2)
-#include <string.h>
-#define strcasecmp stricmp
-#include <sys/time.h>
-#else
-#include <unistd.h>
-#include <fcntl.h>
-#include <sys/time.h>
-#endif
-#include <time.h>
-
-#ifndef HAVE_STRPTIME
-#include "strptime.h"
-#endif
 
 AVInputFormat *first_iformat;
 AVOutputFormat *first_oformat;
@@ -1300,38 +1282,6 @@ int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg)
         return 0;
 }
 
-int64_t av_gettime(void)
-{
-#ifdef CONFIG_WIN32
-    struct _timeb tb;
-    _ftime(&tb);
-    return ((int64_t)tb.time * int64_t_C(1000) + (int64_t)tb.millitm) * int64_t_C(1000);
-#else
-    struct timeval tv;
-    gettimeofday(&tv,NULL);
-    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-#endif
-}
-
-static 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;
-}
-
 /* Syntax:
  * - If not a duration:
  *  [{YYYY-MM-DD|YYYYMMDD}]{T| }{HH[:MM[:SS[.m...]]][Z]|HH[MM[SS[.m...]]][Z]}
@@ -1373,7 +1323,7 @@ int64_t parse_date(const char *datestr, int duration)
     q = NULL;
     if (!duration) {
         for (i = 0; i < sizeof(date_fmt) / sizeof(date_fmt[0]); i++) {
-            q = strptime(p, date_fmt[i], &dt);
+            q = small_strptime(p, date_fmt[i], &dt);
             if (q) {
                 break;
             }
@@ -1394,13 +1344,13 @@ int64_t parse_date(const char *datestr, int duration)
             p++;
 
         for (i = 0; i < sizeof(time_fmt) / sizeof(time_fmt[0]); i++) {
-            q = strptime(p, time_fmt[i], &dt);
+            q = small_strptime(p, time_fmt[i], &dt);
             if (q) {
                 break;
             }
         }
     } else {
-        q = strptime(p, time_fmt[0], &dt);
+        q = small_strptime(p, time_fmt[0], &dt);
         if (!q) {
             dt.tm_sec = strtol(p, (char **)&q, 10);
             dt.tm_min = 0;