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Diffstat (limited to 'libavformat/file.c')
-rw-r--r--libavformat/file.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/libavformat/file.c b/libavformat/file.c
index e613b91010..08c7f8e6dd 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -73,6 +73,7 @@ typedef struct FileContext {
int trunc;
int blocksize;
int follow;
+ int seekable;
#if HAVE_DIRENT_H
DIR *dir;
#endif
@@ -82,6 +83,7 @@ static const AVOption file_options[] = {
{ "truncate", "truncate existing files on write", offsetof(FileContext, trunc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM },
{ "blocksize", "set I/O operation maximum block size", offsetof(FileContext, blocksize), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
{ "follow", "Follow a file as it is being written", offsetof(FileContext, follow), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
+ { "seekable", "Sets if the file is seekable", offsetof(FileContext, seekable), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 0, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
{ NULL }
};
@@ -238,6 +240,9 @@ static int file_open(URLContext *h, const char *filename, int flags)
if (!h->is_streamed && flags & AVIO_FLAG_WRITE)
h->min_packet_size = h->max_packet_size = 262144;
+ if (c->seekable >= 0)
+ h->is_streamed = !c->seekable;
+
return 0;
}