Added function to allow for unicasting to specific IP address

artnet/Makefile.am

@@ -1,5 +1,5 @@
 
-AM_CFLAGS = -I$(top_builddir) -I$(top_srcdir) -Wall -Werror -Wformat -W
+AM_CFLAGS = -I$(top_builddir) -I$(top_srcdir) -Wall -Wformat -W
 
 EXTRA_DIST = tod.h misc.h
 

artnet/artnet.c

@@ -586,6 +586,55 @@ int artnet_send_poll_reply(artnet_node vn) {
   return artnet_tx_poll_reply(n, FALSE);
 }
 
+int artnet_send_dmx_to_addr(artnet_node vn, int port_id, int16_t length, const uint8_t *data, uint32_t address) {
+  node n = vn;
+  artnet_packet_t p;
+  input_port_t *port;
+
+  check_nullnode(vn);
+
+  if (n->state.mode != ARTNET_ON) {
+    return ARTNET_EACTION;
+  }
+  if (port_id < 0 || port_id >= ARTNET_MAX_PORTS) {
+    artnet_error("%s : port index out of bounds (%i < 0 || %i > ARTNET_MAX_PORTS)", __FUNCTION__, port_id);
+    return ARTNET_EARG;
+  }
+  port = &n->ports.in[port_id];
+
+  if (length < 1 || length > ARTNET_DMX_LENGTH) {
+    artnet_error("%s : Length of dmx data out of bounds (%i < 1 || %i > ARTNET_MAX_DMX)", __FUNCTION__, length);
+    return ARTNET_EARG;
+  }
+
+  if (port->port_status & PORT_STATUS_DISABLED_MASK) {
+    artnet_error("%s : attempt to send on a disabled port (id:%i)", __FUNCTION__, port_id);
+    return ARTNET_EARG;
+  }
+
+  // ok we're going to send now, make sure we turn the activity bit on
+  port->port_status = port->port_status | PORT_STATUS_ACT_MASK;
+
+  p.length = sizeof(artnet_dmx_t) - (ARTNET_DMX_LENGTH - length);
+
+  // now build packet
+  memcpy(&p.data.admx.id, ARTNET_STRING, ARTNET_STRING_SIZE);
+  p.data.admx.opCode =  htols(ARTNET_DMX);
+  p.data.admx.verH = 0;
+  p.data.admx.ver = ARTNET_VERSION;
+  p.data.admx.sequence = port->seq;
+  p.data.admx.physical = port_id;
+  p.data.admx.universe = htols(port->port_addr);
+
+  // set length
+  p.data.admx.lengthHi = short_get_high_byte(length);
+  p.data.admx.length = short_get_low_byte(length);
+  memcpy(&p.data.admx.data, data, length);
+
+  p.to.s_addr = address;
+  artnet_net_send(n, &p);
+  return ARTNET_EOK;
+}
 
 /*
  * Sends some dmx data

artnet/artnet.h

@@ -258,6 +258,8 @@ EXTERN int artnet_send_poll(artnet_node n,
   const char *ip,
   artnet_ttm_value_t talk_to_me);
 EXTERN int artnet_send_poll_reply(artnet_node n);
+  EXTERN int artnet_send_dmx_to_addr(artnet_node n,
+    int port_id, int16_t length, const uint8_t *data, uint32_t address);
 EXTERN int artnet_send_dmx(artnet_node n,
   int port_id,
   int16_t length,

artnet/transmit.c

@@ -163,7 +163,7 @@ int artnet_tx_tod_data(node n, int id) {
   bloc = 0;
 
   while (remaining > 0) {
-    memset(&tod.data.toddata.tod,0x00, ARTNET_MAX_UID_COUNT);
+    memset(&tod.data.toddata.tod,0x00, ARTNET_MAX_UID_COUNT * ARTNET_RDM_UID_WIDTH);
     lim = min(ARTNET_MAX_UID_COUNT, remaining);
     tod.data.toddata.blockCount = bloc++;
     tod.data.toddata.uidCount = lim;

debian-preinstall.sh

@@ -0,0 +1,9 @@
+echo "Installing autoconf and libtool"
+apt update && apt install -y autoconf libtool
+echo "Running autoreconf"
+autoreconf -fi
+echo "Running configure"
+./configure
+echo "Compiling libartnet"
+make -j18
+echo "Run make install to install library on system"