From 9c65d30bcf66cd2c245a53fda7ee7900021880c2 Mon Sep 17 00:00:00 2001
From: Martin Pulec <martin.pulec@cesnet.cz>
Date: Wed, 6 May 2020 10:20:28 +0200
Subject: [PATCH] Allow system vrgstream.h override

---
 configure.ac                              | 4 ++++
 src/rtp/rtp_callback.c                    | 8 +++++++-
 src/video_capture/shm.c                   | 8 +++++++-
 src/{vrgstream.h => vrgstream-fallback.h} | 0
 4 files changed, 18 insertions(+), 2 deletions(-)
 rename src/{vrgstream.h => vrgstream-fallback.h} (100%)

diff --git a/configure.ac b/configure.ac
index 7bc907f29..5dee3d87f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3188,6 +3188,10 @@ AC_ARG_ENABLE(vrg,
 AC_CHECK_HEADER(vrgstream.h, FOUND_VRG_H=yes, FOUND_VRG_H=no)
 AC_CHECK_LIB(vrgstream, vrgStreamInit,  FOUND_VRG_L=yes, FOUND_VRG_L=no)
 
+if test $FOUND_VRG_H = yes; then
+        AC_DEFINE([HAVE_VRG_H], [1], [We can use vrgstream.h])
+fi
+
 if test $vrg_req != no -a $FOUND_VRG_H = yes -a $FOUND_VRG_L = yes
 then
         LIBS="$LIBS -lvrgstream"
diff --git a/src/rtp/rtp_callback.c b/src/rtp/rtp_callback.c
index fb2880cfa..52c9279e9 100644
--- a/src/rtp/rtp_callback.c
+++ b/src/rtp/rtp_callback.c
@@ -74,8 +74,14 @@
 #include "rtp/pbuf.h"
 #include "rtp/rtp_callback.h"
 #include "tfrc.h"
+
+// substitute RGBA not to collide with UG RGBA
 #define RGBA VR_RGBA
-#include "vrgstream.h"
+#ifdef HAVE_VRG_H
+#include <vrgstream.h>
+#else
+#include "vrgstream-fallback.h"
+#endif
 #undef RGBA
 
 extern char *frame;
diff --git a/src/video_capture/shm.c b/src/video_capture/shm.c
index 5b6617b0e..9565cad5f 100644
--- a/src/video_capture/shm.c
+++ b/src/video_capture/shm.c
@@ -55,8 +55,14 @@
 #include "video.h"
 #include "video_capture.h"
 #include "video_capture/shm.h"
+
+// substitute RGBA not to collide with UG RGBA
 #define RGBA VR_RGBA
-#include "vrgstream.h"
+#ifdef HAVE_VRG_H
+#include <vrgstream.h>
+#else
+#include "vrgstream-fallback.h"
+#endif
 #undef RGBA
 
 #define MAX_BUF_LEN (7680 * 2160 / 3 * 2)
diff --git a/src/vrgstream.h b/src/vrgstream-fallback.h
similarity index 100%
rename from src/vrgstream.h
rename to src/vrgstream-fallback.h