add osc client and send all midibuttons to technical OSC addresses

Makefile

 src = $(wildcard *.c)
 obj = $(src:.c=.o)
 
-LDFLAGS = -lasound -lpthread
+LDFLAGS = -lasound -llo -lpthread
 
 $(exe): $(obj)
 	$(CC) -o $@ $^ $(LDFLAGS)

main.c

  */
 #include <alsa/asoundlib.h>
 #include <pthread.h>             /* for threading        */
-
-
-// function declarations:
-void     alsa_error           (const char *format, ...);
-void*    midiinfunction       (void * arg);
-void     midi_in_dispatch     (void * arg, unsigned char * m);
-
+#include <lo/lo.h>
+#include "mapping.h"
 
 typedef struct {
   snd_rawmidi_t* midiin;
   snd_rawmidi_t* midiout;
+  lo_address osc_out;
   unsigned char hui_in_zone;
 } housicIO;
 
+typedef struct {
+  char type;
+  char* address;
+} Item;
+
+char *ZONES[] = {
+  "channel_strip_1",
+  "channel_strip_2",
+  "channel_strip_3",
+  "channel_strip_4",
+  "channel_strip_5",
+  "channel_strip_6",
+  "channel_strip_7",
+  "channel_strip_8",
+  "keyboard_shortcuts",
+  "window",
+  "channel_selection",
+  "assignment_1",
+  "assignment_2",
+  "cursor",
+  "transport_main",
+  "transport_add1",
+  "transport_add2",
+  "monitor_input",
+  "monitor_output",
+  "num_pad_1",
+  "num_pad_2",
+  "num_pad_3",
+  "timecode",
+  "auto_enable",
+  "auto_mode",
+  "status_group",
+  "edit",
+  "fn_keys",
+  "parameter_edit",
+  "misc"
+};
+
+char *BUTTONS[0x1e][8] = {
+  {"fader","select","mute","solo","auto","v-sel","insert","rec_rdy"},
+  {"fader","select","mute","solo","auto","v-sel","insert","rec_rdy"},
+  {"fader","select","mute","solo","auto","v-sel","insert","rec_rdy"},
+  {"fader","select","mute","solo","auto","v-sel","insert","rec_rdy"},
+  {"fader","select","mute","solo","auto","v-sel","insert","rec_rdy"},
+  {"fader","select","mute","solo","auto","v-sel","insert","rec_rdy"},
+  {"fader","select","mute","solo","auto","v-sel","insert","rec_rdy"},
+  {"fader","select","mute","solo","auto","v-sel","insert","rec_rdy"},
+  {"ctrl","shift","editmode","undo","alt","option","edittool","save"},
+  {"mix","edit","transprt","mem-loc","status","alt"},
+  {"chan_left","bank_left","chanl_right","bank_right"},
+  {"output","input","pan","send_e","send_d","send_c","send_b","send_a"},
+  {"assign","default","suspend","shift","mute","bypass","recrdyall"},
+  {"down","left","mode","right","up","scrub","shuttle"},
+  {"talkback","rewind","fast_fwd","stop","play","record"},
+  {"rtz","end","on_line","loop","quick_punch"},
+  {"audition","pre","in","out","post"},
+  {"input_3 ","input_2","input_1","mute","discrete"},
+  {"output_3","output_2","output_1","dim","mono"},
+  {"0","1","4","2","5",".","3","6"},
+  {"enter","+"},
+  {"7","8","9","-","clr","=","divide","*"},
+  {"timecode","feet","beats","rudesolo"},
+  {"plug_in","pan","fader","sendmute","send","mute"},
+  {"trim","latch","read","off","write","touch"},
+  {"phase","monitor","auto","suspend","create","group"},
+  {"paste","cut","capture","delete","copy","separate"},
+  {"f1","f2","f3","f4","f5","f6","f7","f8"},
+  {"insert","assign","select_1","select_2","select_3","select_4","bypass","compare"},
+  {"switch_1","switch_2","click","beep"}
+};
+
+// function declarations:
+void     alsa_error           (const char *format, ...);
+void*    midiinfunction       (void * arg);
+void     midi_in_dispatch     (void * arg, unsigned char * m);
+void     lo_error             (int num, const char *m, const char *path);
+int      osc_in_handler       (const char *path, const char *types, lo_arg ** argv,
+                               int argc, void *data, void *user_data);
+void     hui_in_button        (void *arg, unsigned char m);
+void     osc_send             (void *arg, Item el, float value);
+void     register_osc_receives();
+
 int main(int argc, char *argv[]) {
   int status;
   int mode = SND_RAWMIDI_SYNC;
   pthread_t midiinthread;
-
-  housicIO IOs = {NULL,NULL,0};
+  lo_server_thread st = lo_server_thread_new("7770", lo_error);
+  housicIO IOs = {NULL,NULL,0,0};
+  IOs.osc_out = lo_address_new(NULL,"7771");
   
-  //  snd_rawmidi_t* midiin = NULL;
   const char* portname = "virtual";
 
-  
+  // MIDI
   if ((status = snd_rawmidi_open(&IOs.midiin, NULL, portname, mode)) < 0) {
     alsa_error("Problem opening MIDI input: %s", snd_strerror(status));
     exit(1);
   }
-
   status = pthread_create(&midiinthread, NULL, midiinfunction, &IOs);
   
+  // OSC
+  register_osc_receives();
+  lo_server_thread_add_method(st, NULL, NULL, osc_in_handler, NULL);
+  lo_server_thread_start(st);
+  
+  // wait for MIDI thread to end (will not happen)
   pthread_join(midiinthread, NULL);
-
-  //snd_rawmidi_close(midiin);
-  //midiin=NULL;
+  
   
   return 0;
 }
 // midiinfunction -- Thread function which waits around until a MIDI 
 //      input byte arrives and then react correspondingly
 //
+void register_osc_receives() {
+  
+}
+
+//////////////////////////////
+//
+// midiinfunction -- Thread function which waits around until a MIDI 
+//      input byte arrives and then react correspondingly
+//
 
 void *midiinfunction(void *arg) {
   housicIO* IOs = (housicIO*)arg;
     if (m[1] == 0x0f) {
       // received a zone select
       IOs->hui_in_zone = m[2];
-    }
+    } else {
+      if (m[1] == 0x2f) {
+        // should always be true, if HUI is working.
+        hui_in_button(IOs,m[2]);
+      }
+    } 
+  }
+}
+
+//////////////////////////////
+//
+// hui_in_button -- user interacted with a button on the HUI
+//
+void hui_in_button(void *arg, unsigned char m) {
+  housicIO* IOs = (housicIO*)arg;
+  char address[32];
 
+  char zone = IOs->hui_in_zone;
+  int dir  = m & 0xf0;
+  int port = m & 0x0f;
+
+  sprintf(address, "/%s/%s",ZONES[zone],BUTTONS[zone][port]);
+  Item ee = {'b',address};
+  if (dir == 0x40) {
+    // down
+    osc_send(IOs, ee, 1);
+  } else if (dir == 0x00) {
+    // up
+    osc_send(IOs, ee, 0);
   }
 }
 
 
+
+//////////////////////////////
+//
+// osc_send --
+//
+void osc_send(void *arg, Item el, float value) {
+  housicIO* IOs = (housicIO*)arg;
+
+  lo_send(IOs->osc_out, el.address, "f", value );
+}
+
+//////////////////////////////
+//
+// osc_in_handler -- receive incoming OSC messages
+//
+int osc_in_handler (const char *path, const char *types, lo_arg ** argv,
+                    int argc, void *data, void *user_data) {
+  int i;
+
+  printf("path: <%s>\n", path);
+  for (i = 0; i < argc; i++) {
+    printf("arg %d '%c' ", i, types[i]);
+    lo_arg_pp((lo_type)types[i], argv[i]);
+    printf("\n");
+  }
+  printf("\n");
+  fflush(stdout);
+
+  return 1;
+}
+
 //////////////////////////////
 //
 // error -- print error message
    va_end(ap);
    putc('\n', stderr);
 }
+void lo_error(int num, const char *msg, const char *path)
+{
+    printf("liblo server error %d in path %s: %s\n", num, path, msg);
+    fflush(stdout);
+}