diff options
author | Anton Khirnov <anton@khirnov.net> | 2022-02-08 19:13:45 +0100 |
---|---|---|
committer | Anton Khirnov <anton@khirnov.net> | 2022-02-15 10:16:16 +0100 |
commit | e9acff8a013bdd6d459116ceb35f8a53b60ff521 (patch) | |
tree | 56e3688ec676c4f8e729346cc06472a310119eb6 | |
parent | 73b01844c2338fa037307539d161c6565d5f7f65 (diff) |
lavu/fifo: fix a corner case in av_fifo_grow2()
When the fifo is grown by exactly the current write offset, it would end
up with offset_w = nb_elems. If av_fifo_write_from_cb() is called in
such a state, the user callback would get callled with *nb_elems=0,
which will then cause the write to return without writing anything.
-rw-r--r-- | libavutil/fifo.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavutil/fifo.c b/libavutil/fifo.c index 02e0ec3f0d..09c984143f 100644 --- a/libavutil/fifo.c +++ b/libavutil/fifo.c @@ -115,7 +115,7 @@ int av_fifo_grow2(AVFifo *f, size_t inc) (f->offset_w - copy) * f->elem_size); f->offset_w -= copy; } else - f->offset_w = f->nb_elems + copy; + f->offset_w = copy == inc ? 0 : f->nb_elems + copy; } f->nb_elems += inc; |