support OS X with new netjack code, plus a small netjack fix/improvement

git-svn-id: svn+ssh://jackaudio.org/trunk/jack@3135 0c269be4-1314-0410-8aa9-9f06e86f4224

Makefile.am

@@ -19,7 +19,7 @@ DIST_SUBDIRS = config jack libjack jackd drivers example-clients tools doc
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = jack.pc
 
-EXTRA_DIST = COPYING COPYING.GPL COPYING.LGPL libjack/simd.c
+EXTRA_DIST = COPYING COPYING.GPL COPYING.LGPL libjack/simd.c jack.spec
 
 AUTOMAKE_OPTIONS = foreign
 

configure.ac

@@ -78,6 +78,7 @@ AC_PROG_CXX
 AC_PROG_LD
 AM_PROG_LIBTOOL
 AC_PROG_LN_S
+AM_PROG_CC_C_O
 AC_C_BIGENDIAN
 
 AC_MSG_CHECKING([platform dependencies])
@@ -170,6 +171,21 @@ AC_CHECK_FUNCS(on_exit atexit)
 AC_CHECK_FUNCS(posix_memalign)
 AC_CHECK_LIB(m, sin)
 
+echo -n "Checking for ppoll()... "
+AC_EGREP_CPP( ppoll,
+[
+#define _GNU_SOURCE
+#include <poll.h>
+], [
+    	AC_DEFINE(HAVE_PPOLL,1,"Whether ppoll is available")
+	echo "yes"
+   ],[
+    	AC_DEFINE(HAVE_PPOLL,0,"Whether ppoll is available")
+	echo "no"
+   ] )
+
+	 
+
 AC_CHECK_FUNC(clock_gettime, 
        [
            AC_DEFINE(HAVE_CLOCK_GETTIME,0,"Whether or not clock_gettime can be found in system libraries")
@@ -762,6 +778,7 @@ AM_CONDITIONAL(HAVE_READLINE, $HAVE_READLINE)
 AM_CONDITIONAL(HAVE_DOXYGEN, $HAVE_DOXYGEN)
 AM_CONDITIONAL(USE_CAPABILITIES, $USE_CAPABILITIES)
 AM_CONDITIONAL(STRIPPED_JACKD, $STRIPPED_JACKD)
+AM_CONDITIONAL(HAVE_PPOLL, $HAVE_PPOLL)
 
 AC_OUTPUT(
 Makefile

drivers/netjack/Makefile.am

@@ -7,6 +7,9 @@ if HAVE_SAMPLERATE
 if HAVE_CELT
 AM_CFLAGS += -DHAVE_CELT
 endif
+if HAVE_PPOLL
+AM_CFLAGS += -DHAVE_PPOLL
+endif
 
 plugindir = $(ADDON_DIR)
 

drivers/netjack/net_driver.c

@@ -52,6 +52,8 @@ $Id: net_driver.c,v 1.17 2006/04/16 20:16:10 torbenh Exp $
 
 #undef DEBUG_WAKEUP
 
+#define MIN(x,y) ((x)<(y) ? (x) : (y))
+
 static int sync_state = TRUE;
 static jack_transport_state_t last_transport_state;
 
@@ -300,7 +302,7 @@ net_driver_read (net_driver_t* driver, jack_nframes_t nframes)
     framecnt = pkthdr->framecnt;
     driver->reply_port = pkthdr->reply_port;
     driver->latency = pkthdr->latency;
-    driver->resync_threshold = pkthdr->latency-1;
+    driver->resync_threshold = MIN( 15, pkthdr->latency-1 );
 
     // check whether, we should handle the transport sync stuff, or leave trnasports untouched.
     if (driver->handle_transport_sync) {
@@ -704,7 +706,7 @@ net_driver_new (jack_client_t * client,
     driver->num_lost_packets = 0;
     driver->next_deadline_valid = 0;
 
-    driver->resync_threshold = driver->latency - 1;
+    driver->resync_threshold = MIN( 15, driver->latency-1 );
     driver->running_free = 0;
 
     jack_info ("netjack: period   : up: %d / dn: %d", driver->net_period_up, driver->net_period_down);

drivers/netjack/netjack_packet.c

@@ -26,6 +26,9 @@
  *
  */
 
+#ifdef HAVE_PPOLL
+#define _GNU_SOURCE
+#endif
 
 #include <math.h>
 #include <stdio.h>
@@ -323,15 +326,24 @@ netjack_poll_deadline (int sockfd, jack_time_t deadline)
 {
     struct pollfd fds;
     int i, poll_err = 0;
-    sigset_t sigmask;
+    sigset_t sigmask, rsigmask;
     struct sigaction action;
+#ifdef HAVE_PPOLL
     struct timespec timeout_spec = { 0, 0 }; 
+#else
+    int timeout;
+#endif
+
 
     jack_time_t now = jack_get_microseconds();
     if( now >= deadline )
 	return 0;
 
+#ifdef HAVE_PPOLL
     timeout_spec.tv_nsec = (deadline - now) * 1000;
+#else
+    timeout = lrintf( (float)(deadline - now) / 1000.0 );
+#endif
 
     sigemptyset(&sigmask);
 	sigaddset(&sigmask, SIGHUP);
@@ -353,7 +365,13 @@ netjack_poll_deadline (int sockfd, jack_time_t deadline)
     fds.fd = sockfd;
     fds.events = POLLIN;
 
+#ifdef HAVE_PPOLL
     poll_err = ppoll (&fds, 1, &timeout_spec, &sigmask);
+#else
+    sigprocmask (SIG_UNBLOCK, &sigmask, &rsigmask);
+    poll_err = poll (&fds, 1, timeout);
+    sigprocmask (SIG_SETMASK, &rsigmask, NULL);
+#endif
 
     if (poll_err == -1)
     {

tools/Makefile.am

@@ -127,6 +127,9 @@ jack_netsource_CFLAGS = -I$(top_srcdir)/drivers/netjack
 if HAVE_CELT
 jack_netsource_CFLAGS += -DHAVE_CELT
 endif
+if HAVE_PPOLL
+jack_netsource_CFLAGS += -DHAVE_PPOLL
+endif
 jack_netsource_LDFLAGS = -lsamplerate @OS_LDFLAGS@
 jack_netsource_LDADD = $(top_builddir)/libjack/libjack.la