h264: Move start code search functions into separate source files.

This permits re-use with parsers for codecs which use similar start codes.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

libavcodec/startcode.h

@@ -0,0 +1,26 @@
+/*
+ * This file is part of Libav.
+ *
+ * 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.
+ *
+ * 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_STARTCODE_H
+#define AVCODEC_STARTCODE_H
+
+#include <stdint.h>
+
+int ff_startcode_find_candidate_c(const uint8_t *buf, int size);
+
+#endif /* AVCODEC_STARTCODE_H */