res_pjsip_session: Add support for PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE flag.

Newer versions of PJSIP have changed to using a flag for the
PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE instead of a define. This adds a
configure check to detect the presence of the flag and use it if found.
........

Merged revisions 403329 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@403330 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 402865 .
+# From configure.ac Revision: 403161 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.69 for asterisk trunk.
 #
@@ -899,6 +899,10 @@ PBX_PORTAUDIO
 PORTAUDIO_DIR
 PORTAUDIO_INCLUDE
 PORTAUDIO_LIB
+PBX_PJSIP_REPLACE_MEDIA_STREAM
+PJSIP_REPLACE_MEDIA_STREAM_DIR
+PJSIP_REPLACE_MEDIA_STREAM_INCLUDE
+PJSIP_REPLACE_MEDIA_STREAM_LIB
 PBX_PJ_TRANSACTION_GRP_LOCK
 PJ_TRANSACTION_GRP_LOCK_DIR
 PJ_TRANSACTION_GRP_LOCK_INCLUDE
@@ -10167,6 +10171,18 @@ PBX_PJ_TRANSACTION_GRP_LOCK=0
 
 
 
+PJSIP_REPLACE_MEDIA_STREAM_DESCRIP="PJSIP Media Stream Replacement Support"
+PJSIP_REPLACE_MEDIA_STREAM_OPTION=pjsip
+PJSIP_REPLACE_MEDIA_STREAM_DIR=${PJPROJECT_DIR}
+
+PBX_PJSIP_REPLACE_MEDIA_STREAM=0
+
+
+
+
+
+
+
     PORTAUDIO_DESCRIP="PortAudio"
     PORTAUDIO_OPTION="portaudio"
     PBX_PORTAUDIO=0
@@ -23738,6 +23754,52 @@ fi
 
 
 
+    if test "x${PBX_PJSIP_REPLACE_MEDIA_STREAM}" != "x1" -a "${USE_PJSIP_REPLACE_MEDIA_STREAM}" != "no"; then
+        if test "x" != "x"; then
+            { $as_echo "$as_me:${as_lineno-$LINENO}: checking for " >&5
+$as_echo_n "checking for ... " >&6; }
+	else
+            { $as_echo "$as_me:${as_lineno-$LINENO}: checking if \"pjmedia_mod_offer_flag flag = PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE\" compiles using pjmedia.h" >&5
+$as_echo_n "checking if \"pjmedia_mod_offer_flag flag = PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE\" compiles using pjmedia.h... " >&6; }
+	fi
+	saved_cppflags="${CPPFLAGS}"
+	if test "x${PJSIP_REPLACE_MEDIA_STREAM_DIR}" != "x"; then
+	    PJSIP_REPLACE_MEDIA_STREAM_INCLUDE="-I${PJSIP_REPLACE_MEDIA_STREAM_DIR}/include"
+	fi
+	CPPFLAGS="${CPPFLAGS} ${PJSIP_REPLACE_MEDIA_STREAM_INCLUDE}"
+
+	cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+ #include <pjmedia.h>
+int
+main ()
+{
+ pjmedia_mod_offer_flag flag = PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE;
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+     { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+		PBX_PJSIP_REPLACE_MEDIA_STREAM=1
+
+$as_echo "#define HAVE_PJSIP_REPLACE_MEDIA_STREAM 1" >>confdefs.h
+
+
+
+else
+         { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+	CPPFLAGS="${saved_cppflags}"
+    fi
+
+
+
 if test "x${PBX_POPT}" != "x1" -a "${USE_POPT}" != "no"; then
    pbxlibdir=""
    # if --with-POPT=DIR has been specified, use it.

configure.ac

@@ -434,6 +434,7 @@ AST_EXT_LIB_SETUP([PGSQL], [PostgreSQL], [postgres])
 AST_EXT_LIB_SETUP([PJPROJECT], [PJPROJECT], [pjproject])
 AST_EXT_LIB_SETUP([POPT], [popt], [popt])
 AST_EXT_LIB_SETUP_OPTIONAL([PJ_TRANSACTION_GRP_LOCK], [PJSIP Transaction Group Lock Support], [PJPROJECT], [pjsip])
+AST_EXT_LIB_SETUP_OPTIONAL([PJSIP_REPLACE_MEDIA_STREAM], [PJSIP Media Stream Replacement Support], [PJPROJECT], [pjsip])
 AST_EXT_LIB_SETUP([PORTAUDIO], [PortAudio], [portaudio])
 AST_EXT_LIB_SETUP([PRI], [ISDN PRI], [pri])
 AST_EXT_LIB_SETUP_OPTIONAL([PRI_L2_PERSISTENCE], [ISDN Layer 2 persistence option], [PRI], [pri])
@@ -2018,6 +2019,8 @@ AST_PKG_CONFIG_CHECK([PJPROJECT], [libpjproject])
 
 AST_EXT_LIB_CHECK([PJ_TRANSACTION_GRP_LOCK], [pjsip], [pjsip_tsx_create_uac2], [pjsip.h])
 
+AST_C_COMPILE_CHECK([PJSIP_REPLACE_MEDIA_STREAM], [pjmedia_mod_offer_flag flag = PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE], [pjmedia.h])
+
 AST_EXT_LIB_CHECK([POPT], [popt], [poptStrerror], [popt.h])
 
 AST_EXT_LIB_CHECK([PORTAUDIO], [portaudio], [Pa_GetDeviceCount], [portaudio.h])

include/asterisk/autoconfig.h.in

@@ -569,6 +569,9 @@
 /* Define if your system has the PJPROJECT libraries. */
 #undef HAVE_PJPROJECT
 
+/* Define if your system has the PJSIP_REPLACE_MEDIA_STREAM headers. */
+#undef HAVE_PJSIP_REPLACE_MEDIA_STREAM
+
 /* Define to 1 if PJPROJECT has the PJSIP Transaction Group Lock Support
    feature. */
 #undef HAVE_PJ_TRANSACTION_GRP_LOCK

res/res_pjsip_session.c

@@ -1222,7 +1222,7 @@ struct ast_sip_session *ast_sip_session_create_outgoing(struct ast_sip_endpoint
 		pjsip_dlg_terminate(dlg);
 		return NULL;
 	}
-#ifdef PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE
+#if defined(HAVE_PJSIP_REPLACE_MEDIA_STREAM) || defined(PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE)
 	inv_session->sdp_neg_flags = PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE;
 #endif
 
@@ -1371,7 +1371,8 @@ static pjsip_inv_session *pre_session_setup(pjsip_rx_data *rdata, const struct a
 		pjsip_dlg_terminate(dlg);
 		return NULL;
 	}
-#ifdef PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE
+
+#if defined(HAVE_PJSIP_REPLACE_MEDIA_STREAM) || defined(PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE)
 	inv_session->sdp_neg_flags = PJMEDIA_SDP_NEG_ALLOW_MEDIA_CHANGE;
 #endif
 	if (pjsip_dlg_add_usage(dlg, &session_module, NULL) != PJ_SUCCESS) {