Avoid the need to use seeking for getting the file size, use fstat
instead, which is significantly faster.
See thread:
Subject: [FFmpeg-devel] [PATCH] Add support to AVSEEK_SIZE to the file protocol seek callback
Date: Fri, 2 Apr 2010 13:13:27 +0200
Originally committed as revision 22799 to svn://svn.ffmpeg.org/ffmpeg/trunk
#include <io.h>
#endif
#include <unistd.h>
+#include <sys/stat.h>
#include <sys/time.h>
#include <stdlib.h>
#include "os_support.h"
static int64_t file_seek(URLContext *h, int64_t pos, int whence)
{
int fd = (intptr_t) h->priv_data;
- if (whence != SEEK_SET && whence != SEEK_CUR && whence != SEEK_END)
- return AVERROR_NOTSUPP;
+ if (whence == AVSEEK_SIZE) {
+ struct stat st;
+ int ret = fstat(fd, &st);
+ return ret < 0 ? AVERROR(errno) : st.st_size;
+ }
return lseek(fd, pos, whence);
}