rtsp: Make the rtsp flags avoptions set via a define

This helps sharing these options with the sdp and rtp demuxers.
Signed-off-by: Martin Storsjö <martin@martin.st>

libavformat/rtsp.c

@@ -60,6 +60,11 @@
 #define OFFSET(x) offsetof(RTSPState, x)
 #define DEC AV_OPT_FLAG_DECODING_PARAM
 #define ENC AV_OPT_FLAG_ENCODING_PARAM
+
+#define RTSP_FLAG_OPTS(name, longname) \
+    { name, longname, OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" }, \
+    { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" }
+
 const AVOption ff_rtsp_options[] = {
     { "initial_pause",  "Don't start playing the stream immediately", OFFSET(initial_pause), AV_OPT_TYPE_INT, {0}, 0, 1, DEC },
     FF_RTP_FLAG_OPTS(RTSPState, rtp_muxer_flags),
@@ -68,8 +73,7 @@ const AVOption ff_rtsp_options[] = {
     { "tcp", "TCP", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_TCP}, 0, 0, DEC|ENC, "rtsp_transport" }, \
     { "udp_multicast", "UDP multicast", 0, AV_OPT_TYPE_CONST, {1 << RTSP_LOWER_TRANSPORT_UDP_MULTICAST}, 0, 0, DEC, "rtsp_transport" },
     { "http", "HTTP tunneling", 0, AV_OPT_TYPE_CONST, {(1 << RTSP_LOWER_TRANSPORT_HTTP)}, 0, 0, DEC, "rtsp_transport" },
-    { "rtsp_flags", "RTSP flags", OFFSET(rtsp_flags), AV_OPT_TYPE_FLAGS, {0}, INT_MIN, INT_MAX, DEC, "rtsp_flags" },
-    { "filter_src", "Only receive packets from the negotiated peer IP", 0, AV_OPT_TYPE_CONST, {RTSP_FLAG_FILTER_SRC}, 0, 0, DEC, "rtsp_flags" },
+    RTSP_FLAG_OPTS("rtsp_flags", "RTSP flags"),
     { NULL },
 };