*/
#include "libavutil/avstring.h"
+#include "libavutil/opt.h"
#include "avformat.h"
#include <fcntl.h>
-#if HAVE_SETMODE
+#if HAVE_IO_H
#include <io.h>
#endif
+#if HAVE_UNISTD_H
#include <unistd.h>
+#endif
#include <sys/stat.h>
#include <stdlib.h>
#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 */
+typedef struct FileContext {
+ const AVClass *class;
+ int fd;
+ int trunc;
+} FileContext;
+
+static const AVOption file_options[] = {
+ { "truncate", "Truncate existing files on write", offsetof(FileContext, trunc), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
+ { NULL }
+};
+
+static const AVClass file_class = {
+ .class_name = "file",
+ .item_name = av_default_item_name,
+ .option = file_options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
static int file_read(URLContext *h, unsigned char *buf, int size)
{
- int fd = (intptr_t) h->priv_data;
- int r = read(fd, buf, size);
+ FileContext *c = h->priv_data;
+ 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)
{
- int fd = (intptr_t) h->priv_data;
- int r = write(fd, buf, size);
+ FileContext *c = h->priv_data;
+ int r = write(c->fd, buf, size);
return (-1 == r)?AVERROR(errno):r;
}
static int file_get_handle(URLContext *h)
{
- return (intptr_t) h->priv_data;
+ FileContext *c = h->priv_data;
+ return c->fd;
}
static int file_check(URLContext *h, int mask)
static int file_open(URLContext *h, const char *filename, int flags)
{
+ FileContext *c = h->priv_data;
int access;
int fd;
struct stat st;
av_strstart(filename, "file:", &filename);
if (flags & AVIO_FLAG_WRITE && flags & AVIO_FLAG_READ) {
- access = O_CREAT | O_TRUNC | O_RDWR;
+ access = O_CREAT | O_RDWR;
+ if (c->trunc)
+ access |= O_TRUNC;
} else if (flags & AVIO_FLAG_WRITE) {
- access = O_CREAT | O_TRUNC | O_WRONLY;
+ access = O_CREAT | O_WRONLY;
+ if (c->trunc)
+ access |= O_TRUNC;
} else {
access = O_RDONLY;
}
fd = open(filename, access, 0666);
if (fd == -1)
return AVERROR(errno);
- h->priv_data = (void *) (intptr_t) fd;
+ c->fd = fd;
h->is_streamed = !fstat(fd, &st) && S_ISFIFO(st.st_mode);
/* XXX: use llseek */
static int64_t file_seek(URLContext *h, int64_t pos, int whence)
{
- int fd = (intptr_t) h->priv_data;
+ FileContext *c = h->priv_data;
+ off_t ret;
+
if (whence == AVSEEK_SIZE) {
struct stat st;
- int ret = fstat(fd, &st);
+ ret = fstat(c->fd, &st);
return ret < 0 ? AVERROR(errno) : (S_ISFIFO(st.st_mode) ? 0 : st.st_size);
}
- return lseek(fd, pos, whence);
+
+ ret = lseek(c->fd, pos, whence);
+
+ return ret < 0 ? AVERROR(errno) : ret;
}
static int file_close(URLContext *h)
{
- int fd = (intptr_t) h->priv_data;
- return close(fd);
+ FileContext *c = h->priv_data;
+ return close(c->fd);
}
URLProtocol ff_file_protocol = {
.url_close = file_close,
.url_get_file_handle = file_get_handle,
.url_check = file_check,
+ .priv_data_size = sizeof(FileContext),
+ .priv_data_class = &file_class,
};
#endif /* CONFIG_FILE_PROTOCOL */
static int pipe_open(URLContext *h, const char *filename, int flags)
{
+ FileContext *c = h->priv_data;
int fd;
char *final;
av_strstart(filename, "pipe:", &filename);
#if HAVE_SETMODE
setmode(fd, O_BINARY);
#endif
- h->priv_data = (void *) (intptr_t) fd;
+ c->fd = fd;
h->is_streamed = 1;
return 0;
}
.url_write = file_write,
.url_get_file_handle = file_get_handle,
.url_check = file_check,
+ .priv_data_size = sizeof(FileContext),
};
#endif /* CONFIG_PIPE_PROTOCOL */