3c844061b7
file and writes a YUV4MPEG stream which can be piped to mpeg2enc. In other words, it exports the nuppelvideo .nuv format for encoding (S)VCD/DVD compliant MPEGs with mjpegtools. PR: ports/73417 Submitted by: Frank W. Josellis <frank@dynamical-systems.org>
62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
--- video/memmem.c.orig Mon Nov 1 09:41:06 2004
|
|
+++ video/memmem.c Mon Nov 1 09:41:06 2004
|
|
@@ -0,0 +1,59 @@
|
|
+/* Copyright (C) 1991,92,93,94,96,97,98,2000 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library 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.
|
|
+
|
|
+ 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
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, write to the Free
|
|
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
+ 02111-1307 USA. */
|
|
+
|
|
+#include <stddef.h>
|
|
+#include <string.h>
|
|
+
|
|
+/* Prepare for the case that `__builtin_expect' is not available. */
|
|
+#ifndef HAVE_BUILTIN_EXPECT
|
|
+# define __builtin_expect(expr, val) (expr)
|
|
+#endif
|
|
+
|
|
+#undef memmem
|
|
+
|
|
+/* Return the first occurrence of NEEDLE in HAYSTACK. */
|
|
+void *
|
|
+memmem (haystack, haystack_len, needle, needle_len)
|
|
+ const void *haystack;
|
|
+ size_t haystack_len;
|
|
+ const void *needle;
|
|
+ size_t needle_len;
|
|
+{
|
|
+ const char *begin;
|
|
+ const char *const last_possible
|
|
+ = (const char *) haystack + haystack_len - needle_len;
|
|
+
|
|
+ if (needle_len == 0)
|
|
+ /* The first occurrence of the empty string is deemed to occur at
|
|
+ the beginning of the string. */
|
|
+ return (void *) haystack;
|
|
+
|
|
+ /* Sanity check, otherwise the loop might search through the whole
|
|
+ memory. */
|
|
+ if (__builtin_expect (haystack_len < needle_len, 0))
|
|
+ return NULL;
|
|
+
|
|
+ for (begin = (const char *) haystack; begin <= last_possible; ++begin)
|
|
+ if (begin[0] == ((const char *) needle)[0] &&
|
|
+ !memcmp ((const void *) &begin[1],
|
|
+ (const void *) ((const char *) needle + 1),
|
|
+ needle_len - 1))
|
|
+ return (void *) begin;
|
|
+
|
|
+ return NULL;
|
|
+}
|