- add input midi channel selection

drmr2.c

@@ -84,6 +84,7 @@ instantiate(const LV2_Descriptor*     descriptor,
   drmr->rate = rate;
   drmr->ignore_velocity = false;
   drmr->ignore_note_off = true;
+  drmr->channel_nb = 0;
 
 #ifdef DRMR_UI_ZERO_SAMP
   drmr->zero_position = DRMR_UI_ZERO_SAMP;
@@ -225,6 +226,8 @@ static inline LV2_Atom *build_state_message(DrMr *drmr) {
   lv2_atom_forge_bool(&drmr->forge, drmr->ignore_velocity?true:false);
   lv2_atom_forge_property_head(&drmr->forge, drmr->uris.note_off_toggle,0);
   lv2_atom_forge_bool(&drmr->forge, drmr->ignore_note_off?true:false);
+  lv2_atom_forge_property_head(&drmr->forge, drmr->uris.channel_nb,0);
+  lv2_atom_forge_int(&drmr->forge, drmr->channel_nb);
   lv2_atom_forge_property_head(&drmr->forge, drmr->uris.zero_position,0);
   lv2_atom_forge_int(&drmr->forge, drmr->zero_position);
   lv2_atom_forge_pop(&drmr->forge,&set_frame);
@@ -346,26 +349,38 @@ static void run(LV2_Handle instance, uint32_t n_samples) {
       uint8_t nn;
       uint8_t* const data = (uint8_t* const)(ev + 1);
       uint32_t offset = (ev->time.frames > 0 && ev->time.frames < n_samples) ? ev->time.frames : 0;
-      //int channel = *data & 15;
+      int channel = *data & 15;
-      switch ((*data) >> 4) {
+
+      if( ( drmr->channel_nb == 0) || ( channel == ( drmr->channel_nb - 1)))
+      {
+	  switch ((*data) >> 4)
+	  {
 	      case 8:
+	      {
 		  if (!drmr->ignore_note_off) {
 		      nn = data[1];
 		      nn-=baseNote;
 		      untrigger_sample(drmr,nn,offset);
 		  }
 		  break;
-      case 9: {
+	      }
+	      
+	      case 9:
+	      {
 		  nn = data[1];
 		  nn-=baseNote;
 		  trigger_sample(drmr,nn,data,offset);
 		  break;
 	      }
+	      
 	      default:
+	      {
 		  //printf("Unhandeled status: %i\n",(*data)>>4);
 		  break;
 	      }
 	  }
+      }
+    } 
     else if (ev->body.type == drmr->uris.atom_resource) {
       const LV2_Atom_Object *obj = (LV2_Atom_Object*)&ev->body;
       if (obj->body.otype == drmr->uris.ui_msg) {
@@ -373,12 +388,14 @@ static void run(LV2_Handle instance, uint32_t n_samples) {
 	const LV2_Atom* trigger = NULL;
 	const LV2_Atom* ignvel = NULL;
 	const LV2_Atom* ignno = NULL;
+	const LV2_Atom* channel_nb = NULL;
 	const LV2_Atom* zerop = NULL;
 	lv2_atom_object_get(obj,
 			    drmr->uris.kit_path, &path,
 			    drmr->uris.sample_trigger, &trigger,
 			    drmr->uris.velocity_toggle, &ignvel,
 			    drmr->uris.note_off_toggle, &ignno,
+			    drmr->uris.channel_nb, &channel_nb,
 			    drmr->uris.zero_position, &zerop,
 			    0);
 	if (path) {
@@ -404,6 +421,8 @@ static void run(LV2_Handle instance, uint32_t n_samples) {
 	  drmr->ignore_velocity = ((const LV2_Atom_Bool*)ignvel)->body;
 	if (ignno)
 	  drmr->ignore_note_off = ((const LV2_Atom_Bool*)ignno)->body;
+	if (channel_nb)
+	  drmr->channel_nb = ((const LV2_Atom_Int*)channel_nb)->body;
 	if (zerop)
 	  drmr->zero_position = ((const LV2_Atom_Int*)zerop)->body;
       } else if (obj->body.otype == drmr->uris.get_state) {
@@ -572,6 +591,14 @@ save_state(LV2_Handle                 instance,
 	       LV2_STATE_IS_POD | LV2_STATE_IS_PORTABLE);
   if (stat) return stat;
 
+  stat = store(handle,
+	       drmr->uris.channel_nb,
+	       &drmr->channel_nb,
+	       sizeof(int),
+	       drmr->uris.int_urid,
+	       LV2_STATE_IS_POD | LV2_STATE_IS_PORTABLE);
+  if (stat) return stat;
+
   stat = store(handle,
 	       drmr->uris.zero_position,
 	       &drmr->zero_position,
@@ -639,6 +666,11 @@ restore_state(LV2_Handle                  instance,
   if (ignore_note_off)
     drmr->ignore_note_off = *ignore_note_off?true:false;
 
+  const int* channel_nb =
+    retrieve(handle, drmr->uris.channel_nb, &size, &type, &fgs);
+  if (channel_nb)
+    drmr->channel_nb = *channel_nb;
+
   const int* zero_position =
     retrieve(handle, drmr->uris.zero_position, &size, &type, &fgs);
   if (zero_position)

drmr2.h

@@ -219,6 +219,7 @@ typedef struct {
   LV2_URID sample_trigger;
   LV2_URID velocity_toggle;
   LV2_URID note_off_toggle;
+  LV2_URID channel_nb;
   LV2_URID zero_position;
 } drmr_uris;
 
@@ -232,8 +233,10 @@ typedef struct {
   LV2_Atom_Forge forge;
 
   // params
+  int channel;
   bool ignore_velocity;
   bool ignore_note_off;
+  int channel_nb;
   int zero_position;
   float** gains;
   float** pans;
@@ -293,6 +296,9 @@ void map_drmr_uris(LV2_URID_Map *map,
   uris->note_off_toggle =
     map->map(map->handle,
 	     DRMR_URI "#noteofftoggle");
+  uris->channel_nb =
+    map->map(map->handle,
+	     DRMR_URI "#channelnb");
   uris->zero_position =
     map->map(map->handle,
 	     DRMR_URI "#zeroposition");

drmr2_ui.c

@@ -52,7 +52,7 @@ typedef struct {
   GtkWidget** gain_sliders;
   GtkWidget** pan_sliders;
   GtkWidget** notify_leds;
-  GtkWidget *position_combo_box, *velocity_checkbox, *note_off_checkbox;
+  GtkWidget *channel_combo_box, *position_combo_box, *velocity_checkbox, *note_off_checkbox;
   GtkScrolledWindow *sample_view;
 
   float *gain_vals,*pan_vals;
@@ -60,6 +60,7 @@ typedef struct {
   
   gchar *bundle_path;
 
+  int channel;
   int cols;
   int startSamp;
 
@@ -417,10 +418,63 @@ static void kit_combobox_changed(GtkComboBox* box, gpointer data) {
   }
 }
 
+static void channel_data(DrMrUi *ui, gpointer data) {
+  lv2_atom_forge_property_head(&ui->forge, ui->uris.channel_nb,0);
+  lv2_atom_forge_int(&ui->forge, GPOINTER_TO_INT(data));
+}
+
+static void channel_combobox_changed(GtkComboBox* box, gpointer data) {
+  DrMrUi* ui = (DrMrUi*)data;
+  gint channel = gtk_combo_box_get_active (GTK_COMBO_BOX(box));
+
+  printf( "Channel Change: [%d]\n", channel);
+  
+  if (channel != ui->channel) {
+    ui->channel = channel;
+    ui->forceUpdate = true;
+    kit_callback(ui);
+    send_ui_msg(ui,&channel_data,GINT_TO_POINTER(channel));
+  }
+}
+
+static GtkWidget *create_channel_combo(void)
+{
+  GtkWidget *combo;
+  GtkListStore *list_store;
+  GtkCellRenderer *cell;
+  GtkTreeIter iter;
+  int  i;
+  char label[8];
+  
+  list_store = gtk_list_store_new(1, G_TYPE_STRING);
+
+  gtk_list_store_append(list_store, &iter);
+  gtk_list_store_set (list_store, &iter, 0, "Omni", -1);
+
+  for( i = 1; i <= 16; i++) {
+      sprintf( label, "%02d", i);
+      gtk_list_store_append(list_store, &iter);
+      gtk_list_store_set (list_store, &iter, 0, label, -1);
+  }
+
+  combo = gtk_combo_box_new_with_model(GTK_TREE_MODEL(list_store));
+
+  gtk_combo_box_set_active(GTK_COMBO_BOX(combo),0);
+
+  g_object_unref(list_store);
+
+  cell = gtk_cell_renderer_text_new();
+  gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combo), cell, TRUE);
+  gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(combo), cell, "text", 0, NULL);
+
+  return combo;
+}
+
 static void position_data(DrMrUi *ui, gpointer data) {
   lv2_atom_forge_property_head(&ui->forge, ui->uris.zero_position,0);
   lv2_atom_forge_int(&ui->forge, GPOINTER_TO_INT(data));
 }
+
 static void position_combobox_changed(GtkComboBox* box, gpointer data) {
   DrMrUi* ui = (DrMrUi*)data;
   gint ss = gtk_combo_box_get_active (GTK_COMBO_BOX(box));
@@ -458,7 +512,6 @@ static GtkWidget *create_position_combo(void)
   gtk_combo_box_set_active(GTK_COMBO_BOX(combo),0);
 #endif
 
-
   g_object_unref(list_store);
 
   cell = gtk_cell_renderer_text_new();
@@ -510,7 +563,7 @@ static void build_drmr_ui(DrMrUi* ui) {
   GtkWidget *drmr_ui_widget;
   GtkWidget *opts_hbox1, *opts_hbox2,
     *kit_combo_box, *kit_label, *no_kit_label,
-    *base_label, *base_spin, *position_label, *sample_view;
+    *base_label, *base_spin, *channel_label, *position_label, *sample_view;
   GtkCellRenderer *cell_rend;
   GtkAdjustment *base_adj;
   
@@ -551,6 +604,9 @@ static void build_drmr_ui(DrMrUi* ui) {
 			5.0,0.0)); // page adj/size
   base_spin = gtk_spin_button_new(base_adj, 1.0, 0);
 
+  channel_label = gtk_label_new("Midi Channel: ");
+  ui->channel_combo_box = create_channel_combo();
+
   position_label = gtk_label_new("Sample Zero Position: ");
   ui->position_combo_box = create_position_combo();
 
@@ -568,6 +624,10 @@ static void build_drmr_ui(DrMrUi* ui) {
   gtk_box_pack_start(GTK_BOX(opts_hbox1),base_spin,
 		     true,true,0);
 
+  gtk_box_pack_start(GTK_BOX(opts_hbox2),channel_label,
+		     false,false,15);
+  gtk_box_pack_start(GTK_BOX(opts_hbox2),ui->channel_combo_box,
+		     false,false,0);
   gtk_box_pack_start(GTK_BOX(opts_hbox2),position_label,
 		     false,false,15);
   gtk_box_pack_start(GTK_BOX(opts_hbox2),ui->position_combo_box,
@@ -604,6 +664,7 @@ static void build_drmr_ui(DrMrUi* ui) {
   
   g_signal_connect(G_OBJECT(kit_combo_box),"changed",G_CALLBACK(kit_combobox_changed),ui);
   g_signal_connect(G_OBJECT(base_spin),"value-changed",G_CALLBACK(base_changed),ui);
+  g_signal_connect(G_OBJECT(ui->channel_combo_box),"changed",G_CALLBACK(channel_combobox_changed),ui);
   g_signal_connect(G_OBJECT(ui->position_combo_box),"changed",G_CALLBACK(position_combobox_changed),ui);
   g_signal_connect(G_OBJECT(ui->velocity_checkbox),"toggled",G_CALLBACK(ignore_velocity_toggled),ui);
   g_signal_connect(G_OBJECT(ui->note_off_checkbox),"toggled",G_CALLBACK(ignore_note_off_toggled),ui);
@@ -755,10 +816,12 @@ port_event(LV2UI_Handle handle,
 	  if (obj->body.otype == ui->uris.get_state) { // read out extra state info
 	    const LV2_Atom* ignvel = NULL;
 	    const LV2_Atom* ignno = NULL;
+	    const LV2_Atom* channel_nb = NULL;
 	    const LV2_Atom* zerop = NULL;
 	    lv2_atom_object_get(obj,
 			   ui->uris.velocity_toggle, &ignvel,
 			   ui->uris.note_off_toggle, &ignno,
+			   ui->uris.channel_nb, &channel_nb,
 			   ui->uris.zero_position, &zerop,
 			   0);
 	    if (ignvel)
@@ -767,6 +830,9 @@ port_event(LV2UI_Handle handle,
 	    if (ignno)
 	      gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(ui->note_off_checkbox),
 					   ((const LV2_Atom_Bool*)ignno)->body);
+	    if (channel_nb)
+	      gtk_combo_box_set_active(GTK_COMBO_BOX(ui->channel_combo_box),
+				       ((const LV2_Atom_Int*)channel_nb)->body);
 	    if (zerop)
 	      gtk_combo_box_set_active(GTK_COMBO_BOX(ui->position_combo_box),
 				       ((const LV2_Atom_Int*)zerop)->body);