diff options
| -rw-r--r-- | stream/stream_file.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/stream/stream_file.c b/stream/stream_file.c index a79ef0e913..6e69f33c94 100644 --- a/stream/stream_file.c +++ b/stream/stream_file.c @@ -64,6 +64,7 @@ struct priv { bool use_poll; bool regular_file; bool appending; + int64_t cached_size; // -2: invalid, -1: unknown int64_t orig_size; struct mp_cancel *cancel; }; @@ -75,15 +76,20 @@ struct priv { static int64_t get_size(stream_t *s) { struct priv *p = s->priv; - off_t size = lseek(p->fd, 0, SEEK_END); - lseek(p->fd, s->pos, SEEK_SET); - return size == (off_t)-1 ? -1 : size; + if (p->cached_size == -2) { + off_t size = lseek(p->fd, 0, SEEK_END); + lseek(p->fd, s->pos, SEEK_SET); + p->cached_size = size < 0 ? -1 : size; + } + return p->cached_size; } static int fill_buffer(stream_t *s, void *buffer, int max_len) { struct priv *p = s->priv; + p->cached_size = -2; // always invalidate cached size + #ifndef __MINGW32__ if (p->use_poll) { int c = mp_cancel_get_fd(p->cancel); @@ -245,7 +251,8 @@ static int open_f(stream_t *stream) { struct priv *p = talloc_ptrtype(stream, p); *p = (struct priv) { - .fd = -1 + .fd = -1, + .cached_size = -2, }; stream->priv = p; stream->is_local_file = true; |