[FFmpeg-cvslog] avformat/libsrt: fix enabling nonblocking mode

[Anthony Delannoy]

ffmpeg | branch: master | Anthony Delannoy <anthony.2lannoy at gmail.com> | Thu Jan 16 11:18:35 2020 +0100| [f8990c5f414d4575415e2a3981c3b142222ca3d4] | committer: Marton Balint

avformat/libsrt: fix enabling nonblocking mode

As written in https://github.com/Haivision/srt/blob/v1.4.1/docs/API.md,
the nonblock mode is activated if SRTO_SNDSYN and SRTO_RCVSYN, for
sending and receiving respectively, are set to 0.

Signed-off-by: Marton Balint <cus at passwd.hu>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f8990c5f414d4575415e2a3981c3b142222ca3d4
---

 libavformat/libsrt.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavformat/libsrt.c b/libavformat/libsrt.c
index 16975b6d94..443df5bee8 100644
--- a/libavformat/libsrt.c
+++ b/libavformat/libsrt.c
@@ -154,10 +154,12 @@ static int libsrt_neterrno(URLContext *h)
 
 static int libsrt_socket_nonblock(int socket, int enable)
 {
-    int ret = srt_setsockopt(socket, 0, SRTO_SNDSYN, &enable, sizeof(enable));
+    int ret, blocking = enable ? 0 : 1;
+    /* Setting SRTO_{SND,RCV}SYN options to 1 enable blocking mode, setting them to 0 enable non-blocking mode. */
+    ret = srt_setsockopt(socket, 0, SRTO_SNDSYN, &blocking, sizeof(blocking));
     if (ret < 0)
         return ret;
-    return srt_setsockopt(socket, 0, SRTO_RCVSYN, &enable, sizeof(enable));
+    return srt_setsockopt(socket, 0, SRTO_RCVSYN, &blocking, sizeof(blocking));
 }
 
 static int libsrt_network_wait_fd(URLContext *h, int eid, int fd, int write)