* buffered file I/O
* Copyright (c) 2001 Fabrice Bellard
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg 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,
+ * FFmpeg 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
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "os_support.h"
#include "url.h"
+/* Some systems may not have S_ISFIFO */
+#ifndef S_ISFIFO
+# ifdef S_IFIFO
+# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
+# else
+# define S_ISFIFO(m) 0
+# endif
+#endif
/* standard file protocol */
static int file_read(URLContext *h, unsigned char *buf, int size)
{
FileContext *c = h->priv_data;
- return read(c->fd, buf, size);
+ int r = read(c->fd, buf, size);
+ return (-1 == r)?AVERROR(errno):r;
}
static int file_write(URLContext *h, const unsigned char *buf, int size)
{
FileContext *c = h->priv_data;
- return write(c->fd, buf, size);
+ int r = write(c->fd, buf, size);
+ return (-1 == r)?AVERROR(errno):r;
}
static int file_get_handle(URLContext *h)
FileContext *c = h->priv_data;
int access;
int fd;
+ struct stat st;
av_strstart(filename, "file:", &filename);
if (fd == -1)
return AVERROR(errno);
c->fd = fd;
+
+ h->is_streamed = !fstat(fd, &st) && S_ISFIFO(st.st_mode);
+
return 0;
}
static int64_t file_seek(URLContext *h, int64_t pos, int whence)
{
FileContext *c = h->priv_data;
- int ret;
+ off_t ret;
if (whence == AVSEEK_SIZE) {
struct stat st;
-
ret = fstat(c->fd, &st);
- return ret < 0 ? AVERROR(errno) : st.st_size;
+ return ret < 0 ? AVERROR(errno) : (S_ISFIFO(st.st_mode) ? 0 : st.st_size);
}
ret = lseek(c->fd, pos, whence);