Add expression pedal setting for RP250, RP255, RP500 and RP1000.

1) #include gui.h in effects.c.

2) Copy/paste error in xml_settings for UNOVIBE_CHORUS_VIBRATO.

3) Use a gboolean instead of a guint.

4) Remove a warning that fires under normal circumstances on devices
   without LFO's.

.gitignore

@@ -0,0 +1,9 @@
+*.[om]
+*.rp355p
+cscope.*
+tags
+gdigi
+*.orig
+*.swp
+images/gdigi_icon.h
+core

AUTHORS

@@ -2,10 +2,11 @@ Tomasz Moń <desowin@gmail.com>
 Stephen Rigler <riglersc@gmail.com>
 Jaco Kroon <jaco@kroon.co.za>
 Rafael Moreno <laocanfei@yahoo.com>
-Andrew O. Shadoura <bugzilla@tut.by>
+Andrew Shadura <bugzilla@tut.by>
 Andreas Karajannis <aakara13@googlemail.com>
 Miklos Aubert <miklos.aubert@gmail.com>
 Jonathan A. Tice <jonandtice@gmail.com>
 John Hammen <jhammen@gmail.com>
 Ahmed Toulan <thelinuxer@gmail.com>
 Tim LaBerge <tlaberge@visi.com>
+Mauro Carvalho Chehab <maurochehab@gmail.com>

Makefile

@@ -3,7 +3,7 @@ EXTRA_CFLAGS ?=
 EXTRA_LDFLAGS ?=
 CFLAGS := $(shell pkg-config --cflags glib-2.0 gio-2.0 gtk+-3.0 libxml-2.0) -Wall -g -ansi -std=c99 $(EXTRA_CFLAGS)
 LDFLAGS = $(EXTRA_LDFLAGS) -Wl,--as-needed
-LDADD := $(shell pkg-config --libs glib-2.0 gio-2.0 gtk+-3.0 gthread-2.0 alsa libxml-2.0) -lexpat 
+LDADD := $(shell pkg-config --libs glib-2.0 gio-2.0 gtk+-3.0 gthread-2.0 alsa libxml-2.0) -lexpat -lm
 OBJECTS = gdigi.o gui.o effects.o preset.o gtkknob.o preset_xml.o
 DEPFILES = $(foreach m,$(OBJECTS:.o=),.$(m).m)
 
@@ -19,16 +19,21 @@ all: gdigi
 gdigi: $(OBJECTS) 
 	$(CC) $(LDFLAGS) -o $@ $+ $(LDADD)
 
+images/gdigi_icon.h: images/icon.png
+	gdk-pixbuf-csource --raw --name=gdigi_icon $< > $@
+
 clean:
 	rm -f *.o
 
 distclean : clean
 	rm -f .*.m
+	rm -r images/gdigi_icon.h
 	rm -f gdigi
 
 install: gdigi
 	install gdigi $(DESTDIR)/usr/bin
 	install gdigi.desktop $(DESTDIR)/usr/share/applications/
+	install images/gdigi.png $(DESTDIR)/usr/share/icons/
 
 NODEP_TARGETS := clean distclean
 depinc := 1

effects.h

@@ -27,7 +27,8 @@ typedef enum {
   VALUE_TYPE_LABEL  = 1 << 3, /**< use value labels (overrides any other option) */
   VALUE_TYPE_EXTRA  = 1 << 4, /**< use extra values */
   VALUE_TYPE_DECIMAL= 1 << 5, /**< display decimal places */
-  VALUE_TYPE_NONE   = 1 << 6, /**< no value displayed */
+  VALUE_TYPE_POSID  = 1 << 6, /**< Packed Position/ID: (pos << 16) | id */
+  VALUE_TYPE_NONE   = 1 << 7, /**< no value displayed */
 } ValueType;
 
 typedef struct _EffectValues {
@@ -105,7 +106,7 @@ enum product_id {
    RP255    = 8,
    RP355    = 9,
 };
-   
+
 typedef struct {
     gchar *name;
     unsigned char family_id;
@@ -116,12 +117,16 @@ typedef struct {
     gint n_banks;
 } Device;
 
-ModifierGroup *modifier_linkable_list();
-void modifier_group_free(ModifierGroup *modifier_group);
+gchar *get_position(guint position);
+void update_modifier_linkable_list(GString* msg);
+extern ModifierGroup *ModifierLinkableList;
+EffectGroup *get_modifier_group(void);
+guint get_modifier_amt(void);
 void get_values_info(EffectValues *values,
                      gdouble *min, gdouble *max, gboolean *custom);
 gboolean get_device_info(unsigned char device_id, unsigned char family_id,
                          unsigned char product_id,
                          Device **device);
 
+
 #endif /* GDIGI_EFFECTS_H */

gdigi.c

@@ -21,6 +21,7 @@
 #include <alsa/asoundlib.h>
 #include <alloca.h>
 #include "gdigi.h"
+#include "gdigi_xml.h"
 #include "gui.h"
 
 static unsigned char device_id = 0x7F;
@@ -35,6 +36,173 @@ static GQueue *message_queue = NULL;
 static GMutex *message_queue_mutex = NULL;
 static GCond *message_queue_cond = NULL;
 
+static guint DebugFlags;
+
+gboolean
+debug_flag_is_set (debug_flags_t flags)
+{
+    if (DebugFlags & flags) {
+        return TRUE;
+    }
+    return FALSE;
+}
+
+gboolean set_debug_flags (const gchar *option_name, const gchar *value,
+                          gpointer data, GError **error)
+{
+    if (strchr(value, 'd')) {
+        DebugFlags |= DEBUG_MSG2DEV;
+    }
+    if (strchr(value, 'h')) {
+        DebugFlags |= DEBUG_MSG2HOST;
+    }
+    if (strchr(value, 'm')) {
+        DebugFlags |= DEBUG_MSG2DEV|DEBUG_MSG2HOST|DEBUG_GROUP;
+    }
+    if (strchr(value, 's')) {
+        DebugFlags |= DEBUG_STARTUP;
+    }
+    if (strchr(value, 'H')) {
+        DebugFlags |= DEBUG_HEX;
+    }
+    if (strchr(value, 'g')) {
+        DebugFlags |= DEBUG_GROUP;
+    }
+    if (strchr(value, 'x')) {
+        DebugFlags |= DEBUG_XML;
+    }
+    if (strchr(value, 'v')) {
+        DebugFlags |= DEBUG_VERBOSE;
+    }
+    if (strchr(value, 'a')) {
+        DebugFlags = -1;
+    }
+
+    return TRUE;
+}
+
+void
+debug_msg (debug_flags_t flags, char *fmt, ...)
+{
+    char buf[1024];
+    if (flags & DebugFlags) {
+        va_list ap;
+
+        va_start(ap, fmt);
+        vsnprintf(buf, 1024, fmt, ap);
+        va_end(ap);
+
+        fprintf(stderr, "%s\n", buf);
+    }
+}
+
+/*
+ * Format a value according to the xml setting.
+ * Returns an allocated buffer that must be freed by the caller.
+ */
+GString *
+format_value (XmlSettings *xml, guint value)
+{
+    GString        *buf = g_string_sized_new(1);
+    EffectValues   *values = NULL;
+    ValueType       vtype;
+    gchar          *suffix = "";
+    gdouble         step = 1.0;
+    gint            offset = 0;
+    gboolean        decimal = FALSE;
+
+    values = xml->values;
+    vtype = values->type;
+    while ((vtype & VALUE_TYPE_EXTRA) && value_is_extra(values, value)) {
+        values = values->extra;
+        vtype = values->type;
+    }
+    vtype &= ~VALUE_TYPE_EXTRA;
+
+    if (vtype & VALUE_TYPE_OFFSET) {
+        offset = values->offset;
+        vtype &= ~VALUE_TYPE_OFFSET;
+    }
+
+    if (vtype & VALUE_TYPE_STEP) {
+        step = values->step;
+        vtype &= ~VALUE_TYPE_STEP;
+    }
+
+    if (vtype & VALUE_TYPE_SUFFIX) {
+        suffix = values->suffix;
+        vtype &= ~VALUE_TYPE_SUFFIX;
+    }
+
+    if (vtype & VALUE_TYPE_DECIMAL) {
+        decimal = TRUE;
+        vtype &= ~VALUE_TYPE_DECIMAL;
+    }
+
+    switch (vtype) {
+    case VALUE_TYPE_LABEL:
+    {
+        char *textp = map_xml_value(xml, values, value);
+        if (!textp) {
+            g_warning("%s: Unable to map %s value %d for id %d position %d",
+                      __FUNCTION__, xml->label, value, xml->id, xml->position);
+            textp = "";
+        }
+        g_string_printf(buf, "%s", textp);
+        break;
+    }
+    case VALUE_TYPE_PLAIN:
+    {
+        if (decimal) {
+            double dvalue = ((gint)value + offset) * step;
+                g_string_printf(buf, "%0.2f%s", dvalue, suffix);
+        } else {
+            gint ivalue = ((gint)value + offset) * step;
+            g_string_printf(buf, "%d%s", ivalue, suffix);
+        }
+        break;
+    }
+    case VALUE_TYPE_NONE:
+        g_string_printf(buf, "%s", "");
+        break;
+
+    case VALUE_TYPE_POSID:
+        g_string_printf(buf, "%d", value);
+        break;
+
+    default:
+        g_warning("Unhandled value type %d", vtype);
+        break;
+    }
+
+    return buf;
+}
+
+GString *
+format_ipv (guint id, guint pos, guint val)
+{
+    GString *buf = g_string_sized_new(1);
+    GString *vec_buf = g_string_sized_new(1);
+    XmlSettings *xml = get_xml_settings(id, pos);
+    GString *val_buf;
+
+    if (!xml) {
+        g_warning("Failed to find xml settings for position %d id %d.",
+                   id, pos);
+        g_string_printf(buf, "%s", "error");
+        return buf;
+    }
+    val_buf = format_value(xml, val);
+
+    g_string_printf(vec_buf, "(%d, %d, %d)", pos, id, val);
+    g_string_printf(buf, "%-16s %s: %s: %s",
+                          vec_buf->str,
+                          get_position(pos), xml->label, val_buf->str);
+    g_string_free(vec_buf, TRUE);
+    g_string_free(val_buf, TRUE);
+    return buf;
+}
+
 /**
  *  Registers an error quark for gdigi if necessary.
  *
@@ -218,33 +386,57 @@ MessageID get_message_id(GString *msg)
     return -1;
 }
 
+#define HEX_WIDTH 26
+
+static gboolean modifier_linkable_list_request_pending = FALSE;
+
 void push_message(GString *msg)
 {
-    if (((unsigned char)msg->str[0] == 0xF0) && ((unsigned char)msg->str[msg->len-1] == 0xF7))
-        g_message("Pushing correct message!");
-    else
+    MessageID msgid = get_message_id(msg);
+    if (((unsigned char)msg->str[0] == 0xF0) &&
+            ((unsigned char)msg->str[msg->len-1] == 0xF7)) {
+        debug_msg(DEBUG_VERBOSE, "Pushing correct message!");
+    } else {
         g_warning("Pushing incorrect message!");
+    }
 
     int x;
-    for (x = 0; x<msg->len; x++)
-        printf("%02x ", (unsigned char)msg->str[x]);
-    printf("\n");
+    if (debug_flag_is_set(DEBUG_HEX)) {
+        for (x = 0; x<msg->len; x++) {
+            if (x && (x % HEX_WIDTH) == 0) {
+                printf("\n");
+            }
+            printf("%02x ", (unsigned char)msg->str[x]);
+        }
+        if (x % HEX_WIDTH) {
+            printf("\n");
+        }
+    }
+    debug_msg(DEBUG_VERBOSE, "Received %s", get_message_name(msgid));
 
-    switch (get_message_id(msg)) {
+    SettingParam *param;
+    switch (msgid) {
         case ACK:
-            g_message("Received ACK");
             g_string_free(msg, TRUE);
             return;
 
         case NACK:
-            g_message("Received NACK");
+            g_warning("Received NACK!");
             g_string_free(msg, TRUE);
             return;
 
         case RECEIVE_PARAMETER_VALUE:
+        {
             unpack_message(msg);
-            SettingParam *param = setting_param_new_from_data(&msg->str[8], NULL);
-            g_message("Received parameter change ID: %d Position: %d Value: %d", param->id, param->position, param->value);
+            param = setting_param_new_from_data(&msg->str[8], NULL);
+            if (debug_flag_is_set(DEBUG_MSG2HOST)) {
+                GString *ipv = format_ipv(param->id,
+                                          param->position,
+                                          param->value);
+                debug_msg(DEBUG_MSG2HOST, "RECEIVE_PARAMETER_VALUE\n%s",
+                                          ipv->str);
+                g_string_free(ipv, TRUE);
+            }
 
             GDK_THREADS_ENTER();
             apply_setting_param_to_gui(param);
@@ -253,32 +445,127 @@ void push_message(GString *msg)
             setting_param_free(param);
             g_string_free(msg, TRUE);
             return;
+        }
 
         case RECEIVE_DEVICE_NOTIFICATION:
             unpack_message(msg);
             unsigned char *str = (unsigned char*)msg->str;
             switch (str[8]) {
-                case NOTIFY_PRESET_MOVED:
-                    if (str[11] == PRESETS_EDIT_BUFFER && str[12] == 0) {
-                        g_message("Loaded preset %d from bank %d", str[10], str[9]);
+            case NOTIFY_PRESET_MOVED:
+                if (str[11] == PRESETS_EDIT_BUFFER && str[12] == 0) {
 
-                        GDK_THREADS_ENTER();
-                        g_timeout_add(0, apply_current_preset_to_gui, NULL);
-                        GDK_THREADS_LEAVE();
-                    } else {
-                        g_message("%d %d moved to %d %d", str[9], str[10], str[11], str[12]);
+                    GDK_THREADS_ENTER();
+                    g_timeout_add(0, apply_current_preset_to_gui, NULL);
+                    GDK_THREADS_LEAVE();
+                    debug_msg(DEBUG_MSG2HOST,
+                              "RECEIVE_DEVICE_NOTIFICATION: Loaded preset "
+                              "%d from bank %d",
+                              str[10], str[9]);
+                } else {
+                    debug_msg(DEBUG_MSG2HOST,
+                              "RECEIVE_DEVICE_NOTIFICATION: %d %d moved to "
+                              "%d %d",
+                              str[9], str[10],
+                              str[11], str[12]);
+                }
+                break;
+
+            case NOTIFY_MODIFIER_GROUP_CHANGED:
+            {
+                int i;
+                if (debug_flag_is_set(DEBUG_HEX)) {
+                    printf("\n");
+                    for (i = 0; i < msg->len; i++) {
+                        printf(" %02x", (unsigned char) str[i]);
                     }
-                    break;
-                default:
-                    g_message("Received unhandled device notification 0x%x", str[11]);
+                    printf("\n");
+                }
+
+                debug_msg(DEBUG_MSG2HOST,
+                          "NOTIFY_MODIFIER_GROUP_CHANGED: Modifier group "
+                          "id %d changed",
+                          (str[9] << 8) | (str[10]));
+
+                if (!modifier_linkable_list_request_pending) {
+                    send_message(REQUEST_MODIFIER_LINKABLE_LIST, "\x00\x01", 2);
+                    modifier_linkable_list_request_pending = TRUE;
+                }
+
+                break;
+            }
+            default:
+                g_warning("Received unhandled device notification 0x%x",
+                          str[11]);
             }
             g_string_free(msg, TRUE);
             return;
+        case RECEIVE_GLOBAL_PARAMETERS:
+            unpack_message(msg);
+            gint tot, n, x;
+            tot = (unsigned char)msg->str[9];
+            if (debug_flag_is_set(DEBUG_HEX)) {
+                for (n = 0; n < msg->len; n++) {
+                    printf("%02x ",(unsigned char) msg->str[n]);
+                }
+                printf("\n");
+            }
+
+            n = 0;
+            x = 10;
+            do {
+                param = setting_param_new_from_data(&msg->str[x], &x);
+                debug_msg(DEBUG_MSG2HOST,
+                          "RECEIVE_GLOBAL_PARAMETERS ID: %5d "
+                          "Position: %2.1d Value: %6.1d: %s",
+                          param->id,
+                          param->position, param->value, "XXX");
+
+                GDK_THREADS_ENTER();
+                apply_setting_param_to_gui(param);
+                GDK_THREADS_LEAVE();
+
+                setting_param_free(param);
+            } while ( (x < msg->len) && n < tot);
+
+            g_string_free(msg, TRUE);
+            return;
+
+
+        case RECEIVE_MODIFIER_LINKABLE_LIST:
+
+            modifier_linkable_list_request_pending = FALSE;
+            unpack_message(msg);
+            tot = (unsigned char)msg->str[9];
+
+            if (debug_flag_is_set(DEBUG_HEX)) {
+                for (n = 0; n < msg->len; n++) {
+                    printf("%02x ",(unsigned char) msg->str[n]);
+                }
+                printf("\n");
+            }
+
+
+            update_modifier_linkable_list(msg);
+
+            g_string_free(msg, TRUE);
+
+            GDK_THREADS_ENTER();
+
+            create_modifier_group(EXP_POSITION, EXP_ASSIGN1);
+            create_modifier_group(LFO1_POSITION, LFO_TYPE);
+            create_modifier_group(LFO2_POSITION, LFO_TYPE);
+
+            GDK_THREADS_LEAVE();
+
+            return;
+
+
         default:
             g_mutex_lock(message_queue_mutex);
             g_queue_push_tail(message_queue, msg);
             g_cond_signal(message_queue_cond);
             g_mutex_unlock(message_queue_mutex);
+            break;
     }
 }
 
@@ -301,7 +588,8 @@ gpointer read_data_thread(gboolean *stop)
         unsigned short revents;
 
         /* SysEx messages can't contain bytes with 8th bit set.
-           memset our buffer to 0xFF, so if for some reason we'll get out of reply bounds, we'll catch it */
+           memset our buffer to 0xFF, so if for some reason we'll
+           get out of reply bounds, we'll catch it */
         memset(buf, '\0', sizeof(buf));
 
         err = poll(pfds, npfds, 200);
@@ -400,6 +688,9 @@ void send_message(gint procedure, gchar *data, gint len)
     g_string_append_printf(msg, "%c\xF7",
                            calculate_checksum(&msg->str[1], msg->len - 1));
 
+    debug_msg(DEBUG_VERBOSE, "Sending %s len %d",
+                              get_message_name(procedure), len);
+
     send_data(msg->str, msg->len);
 
     g_string_free(msg, TRUE);
@@ -620,12 +911,30 @@ SectionID get_genetx_section_id(gint version, gint type)
         }
     }
 
-    g_message("This version of gdigi don't know what to do with this "
+    g_warning("This version of gdigi don't know what to do with this "
               "GeNetX version (%d) and type (%d)", version, type);
 
     return -1;
 }
 
+/**
+ *  \param id Parameter ID
+ *  \param position Parameter position
+ *  \param value Parameter value
+ *
+ *  Forms SysEx message to request parameter then sends it to device.
+ **/
+void get_option(guint id, guint position)
+{
+    GString *msg = g_string_sized_new(9);
+    debug_msg(DEBUG_MSG2DEV, "REQUEST_PARAMETER_VALUE: id %d position %d",
+                              id, position);
+    g_string_append_printf(msg, "%c%c%c",
+                           ((id & 0xFF00) >> 8), (id & 0xFF),
+                           position);
+    send_message(REQUEST_PARAMETER_VALUE, msg->str, msg->len);
+    g_string_free(msg, TRUE);
+}
 /**
  *  \param id Parameter ID
  *  \param position Parameter position
@@ -640,6 +949,11 @@ void set_option(guint id, guint position, guint value)
                            ((id & 0xFF00) >> 8), (id & 0xFF),
                            position);
     append_value(msg, value);
+    if (debug_flag_is_set(DEBUG_MSG2DEV)) {
+        GString *ipv = format_ipv(id, position, value);
+        debug_msg(DEBUG_MSG2DEV, "RECEIVE_PARAMETER_VALUE\n%s", ipv->str);
+        g_string_free(ipv, TRUE);
+    }
     send_message(RECEIVE_PARAMETER_VALUE, msg->str, msg->len);
     g_string_free(msg, TRUE);
 }
@@ -846,11 +1160,12 @@ GList *get_message_list(MessageID id)
                     g_error("get_message_list() doesn't support followning id: %d", id);
                     g_string_free(data, TRUE);
                     g_list_free(list);
+                    g_assert(!"BUG");
                     return NULL;
             }
 
             while (amt) {
-                g_message("%d messages left", amt);
+                debug_msg(DEBUG_VERBOSE, "%d messages left", amt);
                 data = g_queue_pop_nth(message_queue, x);
                 if (data == NULL) {
                     g_cond_wait(message_queue_cond, message_queue_mutex);
@@ -1058,9 +1373,11 @@ static gboolean request_who_am_i(unsigned char *device_id, unsigned char *family
         *device_id = data->str[8];
         *family_id = data->str[9];
         *product_id = data->str[10];
-        g_message("I am device id %d family %d product id %d.",
-                   *device_id, *family_id, *product_id);
         g_string_free(data, TRUE);
+        debug_msg(DEBUG_STARTUP, "Found device id %d family %d product id %d.",
+                                *device_id,
+                                *family_id,
+                                *product_id);
         return TRUE;
     }
     return FALSE;
@@ -1107,6 +1424,25 @@ static void request_device_configuration()
 
 static GOptionEntry options[] = {
     {"device", 'd', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_STRING, &device_port, "MIDI device port to use", NULL},
+    {"debug-flags <flags>", 'D', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_CALLBACK, set_debug_flags,
+        "<flags> any of a, d, g, h, m, s, x, v:\n"
+        "                                "
+        "a: Everything.\n"
+        "                                "
+        "d: Messages to the device.\n"
+        "                                "
+        "g: Group messages.\n"
+        "                                "
+        "h: Dump message contents in hex.\n"
+        "                                "
+        "m: All messages.\n"
+        "                                "
+        "s: Startup.\n"
+        "                                "
+        "x: Debug xml parsing/writing.\n"
+        "                                "
+        "v: Additional verbosity.\n" ,
+        NULL},
     {NULL}
 };
 
@@ -1132,6 +1468,7 @@ static gint get_digitech_devices(GList **devices)
             number++;
             *devices = g_list_append(*devices, GINT_TO_POINTER(card_num));
         }
+        free(name);
     }
 
     return number;
@@ -1151,7 +1488,7 @@ int main(int argc, char *argv[]) {
     g_option_context_add_group(context, gtk_get_option_group(TRUE));
 
     if (!g_option_context_parse(context, &argc, &argv, &error)) {
-        g_message("option parsing failed: %s\n", error->message);
+        g_warning("option parsing failed: %s\n", error->message);
         g_error_free(error);
         g_option_context_free(context);
         exit(EXIT_FAILURE);
@@ -1159,12 +1496,12 @@ int main(int argc, char *argv[]) {
 
     if (device_port == NULL) {
         /* port not given explicitly in commandline - search for devices */
-        GList  *devices = NULL;
-        GList  *device = NULL;
-        int     num_devices = 0;
-        int     chosen_device = 0;
+        GList *devices = NULL;
+        GList *device = NULL;
+        int    num_devices = 0;
+        int    chosen_device = 0;
         if ((num_devices = get_digitech_devices(&devices)) <= 0) {
-            g_message("Couldn't find any DigiTech devices!");
+            g_warning("Couldn't find DigiTech devices!");
             exit(EXIT_FAILURE);
         }
         if (num_devices > 1) {
@@ -1178,9 +1515,9 @@ int main(int argc, char *argv[]) {
         device_port = g_strdup_printf("hw:%d,0,0",
                                       GPOINTER_TO_INT(device->data));
         g_list_free(devices);
-        g_message("Found device %s", device_port);
+        debug_msg(DEBUG_STARTUP, "Found device %s.", device_port);
     } else {
-        g_message("Using device %s", device_port);
+        debug_msg(DEBUG_STARTUP, "Using device %s.", device_port);
     }
 
     g_option_context_free(context);
@@ -1208,14 +1545,14 @@ int main(int argc, char *argv[]) {
 
             if (device != NULL) {
                 /* enable GUI mode */
-                set_option(GUI_MODE_ON_OFF, USB_POSITION, 1);
+                set_option(GUI_MODE_ON_OFF, GLOBAL_POSITION, 1);
 
                 gui_create(device);
                 gtk_main();
                 gui_free();
 
                 /* disable GUI mode */
-                set_option(GUI_MODE_ON_OFF, USB_POSITION, 0);
+                set_option(GUI_MODE_ON_OFF, GLOBAL_POSITION, 0);
             }
         }
     }
@@ -1229,8 +1566,8 @@ int main(int argc, char *argv[]) {
         g_mutex_free(message_queue_mutex);
     }
 
-    if (message_queue != NULL) {
-        g_message("%d unread messages in queue",
+    if (message_queue != NULL && g_queue_get_length(message_queue)) {
+        g_warning("%d unread messages in queue",
                   g_queue_get_length(message_queue));
         g_queue_foreach(message_queue, (GFunc) message_free_func, NULL);
         g_queue_free(message_queue);

gdigi.desktop

@@ -4,4 +4,5 @@ Type=Application
 Name=gdigi
 Exec=gdigi
 Categories=GNOME;Audio;AudioVideo;
+Icon=gdigi
 

gdigi.h

@@ -22,6 +22,19 @@
 
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
 
+typedef enum {
+    DEBUG_MSG2DEV   = (1 << 0),     // Device bound messages.
+    DEBUG_MSG2HOST  = (1 << 1),     // Host bound messages.
+    DEBUG_STARTUP   = (1 << 2),
+    DEBUG_GROUP     = (1 << 3),     // Modifier group
+    DEBUG_HEX       = (1 << 4),     // Dump message contents in hex.
+    DEBUG_XML       = (1 << 5),
+    DEBUG_VERBOSE   = (1 << 6),
+} debug_flags_t;
+
+void debug_msg (debug_flags_t, char *fmt, ...);
+gboolean debug_flag_is_set (debug_flags_t flag);
+
 #define GNX_CHANNEL_POSITION 7
 #define GNX_CHANNEL_AMP 260
 #define GNX_WARP 261
@@ -315,7 +328,7 @@ enum {
 
 #define AMP_TYPE 2496
 #define AMP_ON_OFF 265
-#define AMP_POSITION 8
+#define AMP_A_POSITION 8
 #define AMP_B_POSITION 10
 
 #define AMP_LOOP_ON_OFF 3649
@@ -427,7 +440,6 @@ enum {
 #define EQ_TREB_FREQ 3211
 #define EQ_ENABLE 3212
 
-
 #define EQ_LOW_FREQ 3213
 #define EQ_MID_FREQ_XXX 3214
 #define EQ_HIGH_FREQ 3215
@@ -518,7 +530,6 @@ enum {
 };
 
 #define MOD_TYPE 768
-#define MOD_POSITION 768
 #define MOD_PRE_POST 1798
 
 #define CHORUSFX_TYPE 768
@@ -731,7 +742,7 @@ enum {
     IPS_SCALE_LYDIAN = 4,
     IPS_SCALE_HMINOR = 5,
 };
-    
+
 #define OCTAVER_OCTAVE1 1746
 #define OCTAVER_OCTAVE2 1747
 #define OCTAVER_DRY_LEVEL 1748
@@ -842,7 +853,7 @@ enum {
 #define EXP_POSITION 19
 
 #define EXP_VOLUME_PRE_FX 854594
-#define EXP_VOLUME_POST_FX 1116738 
+#define EXP_VOLUME_POST_FX 1116738
 
 #define EXP_MIN 8195
 #define EXP_MAX 8196
@@ -855,7 +866,7 @@ enum {
 
 #define LFO_WAVEFORM_TRI 0
 #define LFO_WAVEFORM_SINE 1
-#define LFO_WAVEFORM_SQUARE 2 
+#define LFO_WAVEFORM_SQUARE 2
 
 #define LFO1_POSITION 22
 #define LFO2_POSITION 23
@@ -864,7 +875,7 @@ enum {
 #define LFO_ASSIGN_NONE 0
 #define LFO_ASSIGN_PICKUP_ON 131137
 #define LFO_ASSIGN_COMP_ON 262337
-#define LFO_ASSIGN_SUSTAN 262352 
+#define LFO_ASSIGN_SUSTAN 262352
 
 #define VSWITCH_ASSIGN 8384
 #define VSWITCH_MIN 8385
@@ -881,12 +892,14 @@ enum {
 #define LIBRARY_EFFECTS 8705
 #define EFFECTS_LEVEL 8706
 
-#define LIBRARY_POSITION 25
-#define LIB_POSITION 26
+#define LIB_POSITION_A 26
+#define LIB_POSITION_B 25
 
 #define TONE_LIB_TYPE 8704
 #define FX_LIB_TYPE 8705
-#define FX_LIB_LEVEL 8706
+#define FX_LIB_LEVEL 8706      // This influences pitch shift mix, delay level,
+                               // and reverb level, in proportion, as
+                               // specified by FX_LIB_LEVEL_MAX1,2,3.
 #define FX_LIB_LEVEL_MAX1 8708
 #define FX_LIB_LEVEL_MAX2 8710
 #define FX_LIB_LEVEL_MAX3 8712
@@ -963,12 +976,17 @@ enum {
   EFFECTS_LIB_CUSTOM = 1856
 };
 
-#define USB_POSITION 0
+#define GLOBAL_POSITION 0 
+
+#define TUNING_REFERENCE 12288
 #define USB_AUDIO_PLAYBACK_MIX 12297
 #define USB_AUDIO_LEVEL 12307
 
 #define GUI_MODE_ON_OFF 12298
 
+#define EXP_PEDAL_LEVEL 12300
+#define STOMP_MODE 12370
+
 #endif /* DOXYGEN_SHOULD_SKIP_THIS */
 
 typedef enum {
@@ -1114,6 +1132,7 @@ void setting_genetx_free(SettingGenetx *genetx);
 void setting_param_free(SettingParam *param);
 SectionID get_genetx_section_id(gint version, gint type);
 void set_option(guint id, guint position, guint value);
+void get_option(guint id, guint position);
 void send_object(SectionID section, guint bank, guint index,
                  gchar *name, GString *data);
 void send_preset_parameters(GList *params);
@@ -1123,5 +1142,6 @@ void set_preset_level(int level);
 GStrv query_preset_names(gchar bank);
 void message_list_free(GList *list);
 GList *get_current_preset();
+GString *format_ipv(guint id, guint pos, guint val);
 
 #endif /* GDIGI_H */

gdigi_xml.h

@@ -33,7 +33,8 @@ typedef struct {
     guint           xml_labels_amt;
 } XmlSettings;
 
-//  XmlSettings *get_xml_settings(guint id, guint position);
-// gchar *get_xml_label(guint id, guint position, gint type);
+XmlSettings *get_xml_settings(guint id, guint position);
+gboolean value_is_extra(EffectValues *val, int value);
+gchar * map_xml_value(XmlSettings *xml, EffectValues *values, gint value);
 
 #endif /* GDIGI_XML_H */

gtkknob.c

@@ -18,7 +18,8 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
  *****************************************************************************/
 
 #include <math.h>
@@ -153,6 +154,7 @@ gtk_knob_init (GtkKnob *knob) {
     gtk_widget_set_has_window(GTK_WIDGET(knob), FALSE);
     gtk_widget_set_hexpand(GTK_WIDGET(knob), FALSE);
     gtk_widget_set_vexpand(GTK_WIDGET(knob), FALSE);
+    gtk_widget_add_events(GTK_WIDGET(knob), GDK_SCROLL_MASK);
 }
 
 
@@ -367,7 +369,7 @@ gtk_knob_get_preferred_width(GtkWidget *widget,
     g_return_if_fail (widget != NULL);
     g_return_if_fail (GTK_IS_KNOB (widget));
 
-    *minimum_width = *natural_width = GTK_KNOB(widget)->width; 
+    *minimum_width = *natural_width = GTK_KNOB(widget)->width;
 }
 
 static void
@@ -378,7 +380,7 @@ gtk_knob_get_preferred_height(GtkWidget *widget,
     g_return_if_fail (widget != NULL);
     g_return_if_fail (GTK_IS_KNOB (widget));
 
-    *minimum_height = *natural_height = GTK_KNOB(widget)->height; 
+    *minimum_height = *natural_height = GTK_KNOB(widget)->height;
 }
 
 
@@ -624,7 +626,7 @@ static gint gtk_knob_key_press(GtkWidget *widget, GdkEventKey *event)
 static gint
 gtk_knob_motion_notify(GtkWidget *widget, GdkEventMotion *event) {
     GtkKnob *knob;
-    GdkModifierType mods;
+    GdkWindow *window;
     gint x, y;
 
     g_return_val_if_fail (widget != NULL, FALSE);
@@ -636,10 +638,6 @@ gtk_knob_motion_notify(GtkWidget *widget, GdkEventMotion *event) {
     x = event->x;
     y = event->y;
 
-    if (event->is_hint || (event->window != gtk_widget_get_window(widget))) {
-	gdk_window_get_pointer(gtk_widget_get_window(widget), &x, &y, &mods);
-    }
-
     switch (knob->state) {
 
     case STATE_PRESSED:
@@ -647,14 +645,22 @@ gtk_knob_motion_notify(GtkWidget *widget, GdkEventMotion *event) {
 	/* fall through */
 
     case STATE_DRAGGING:
-	if (mods & GDK_BUTTON1_MASK) {
-	    gtk_knob_update_mouse (knob, x, y, TRUE);
-	    return TRUE;
-	}
-	else if (mods & GDK_BUTTON3_MASK) {
-	    gtk_knob_update_mouse (knob, x, y, FALSE);
-	    return TRUE;
-	}
+        window = gtk_widget_get_window(widget);
+        if (event->is_hint || (event->window != window)) {
+            GdkModifierType mods;
+            GdkDeviceManager *device_manager = gdk_display_get_device_manager(gdk_window_get_display(window));
+            GdkDevice *pointer = gdk_device_manager_get_client_pointer(device_manager);
+
+            gdk_window_get_device_position(window, pointer, &x, &y, &mods);
+            if (mods & GDK_BUTTON1_MASK) {
+                gtk_knob_update_mouse (knob, x, y, TRUE);
+                return TRUE;
+            }
+            else if (mods & GDK_BUTTON3_MASK) {
+                gtk_knob_update_mouse (knob, x, y, FALSE);
+                return TRUE;
+            }
+        }
 	break;
     }
 

gtkknob.h

@@ -17,7 +17,8 @@
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
  *****************************************************************************/
 #ifndef __GTK_KNOB_H__
 #define __GTK_KNOB_H__
@@ -50,7 +51,7 @@ typedef enum
 	gint height;  /* derived from image height. */
 	gint frame_width;  /* derived from pixbuf (width / height) or provided override for rectangular frames */
     };
-    
+
     struct _GtkKnob {
 	GtkWidget widget;
 
@@ -68,7 +69,7 @@ typedef enum
 	/* knob animation */
 	GtkKnobAnim *anim;
 	gint width, height;
-	
+
 	/* Old values from adjustment stored so we know when something changes */
 	gdouble old_value;
 	gdouble old_lower;

gui.c

@@ -23,6 +23,73 @@
 #include "effects.h"
 #include "preset.h"
 #include "gtkknob.h"
+#include "images/gdigi_icon.h"
+#include "gdigi_xml.h"
+
+
+static gchar* MessageID_names[] = {
+    [REQUEST_WHO_AM_I] = "REQUEST_WHO_AM_I",
+    [RECEIVE_WHO_AM_I] = "RECEIVE_WHO_AM_I",
+
+    [REQUEST_DEVICE_CONFIGURATION] = "REQUEST_DEVICE_CONFIGURATION",
+    [RECEIVE_DEVICE_CONFIGURATION] = "RECEIVE_DEVICE_CONFIGURATION",
+
+    [REQUEST_GLOBAL_PARAMETERS] = "REQUEST_GLOBAL_PARAMETERS",
+    [RECEIVE_GLOBAL_PARAMETERS] = "RECEIVE_GLOBAL_PARAMETERS",
+
+    [REQUEST_BULK_DUMP] = "REQUEST_BULK_DUMP",
+    [RECEIVE_BULK_DUMP_START] = "RECEIVE_BULK_DUMP_START",
+    [RECEIVE_BULK_DUMP_END] = "RECEIVE_BULK_DUMP_END",
+
+    [REQUEST_PRESET_NAMES] = "REQUEST_PRESET_NAMES",
+    [RECEIVE_PRESET_NAMES] = "RECEIVE_PRESET_NAMES",
+
+    [REQUEST_PRESET_NAME] = "REQUEST_PRESET_NAME",
+    [RECEIVE_PRESET_NAME] = "RECEIVE_PRESET_NAME",
+
+    [REQUEST_PRESET] = "REQUEST_PRESET",
+    [RECEIVE_PRESET_START] = "RECEIVE_PRESET_START",
+    [RECEIVE_PRESET_END] = "RECEIVE_PRESET_END",
+    [RECEIVE_PRESET_PARAMETERS] = "RECEIVE_PRESET_PARAMETERS",
+
+    [LOAD_EDIT_BUFFER_PRESET] = "LOAD_EDIT_BUFFER_PRESET",
+
+    [MOVE_PRESET] = "MOVE_PRESET",
+
+    [REQUEST_MODIFIER_LINKABLE_LIST] = "REQUEST_MODIFIER_LINKABLE_LIST",
+    [RECEIVE_MODIFIER_LINKABLE_LIST] = "RECEIVE_MODIFIER_LINKABLE_LIST",
+
+    [REQUEST_PARAMETER_VALUE] = "REQUEST_PARAMETER_VALUE",
+    [RECEIVE_PARAMETER_VALUE] = "RECEIVE_PARAMETER_VALUE",
+
+    /* version 1 and later */
+    [REQUEST_OBJECT_NAMES] = "REQUEST_OBJECT_NAMES",
+    [RECEIVE_OBJECT_NAMES] = "RECEIVE_OBJECT_NAMES",
+    [REQUEST_OBJECT_NAME] = "REQUEST_OBJECT_NAME",
+    [RECEIVE_OBJECT_NAME] = "RECEIVE_OBJECT_NAME",
+    [REQUEST_OBJECT] = "REQUEST_OBJECT",
+    [RECEIVE_OBJECT] = "RECEIVE_OBJECT",
+    [MOVE_OBJECT] = "MOVE_OBJECT",
+    [DELETE_OBJECT] = "DELETE_OBJECT",
+    [REQUEST_TABLE] = "REQUEST_TABLE",
+    [RECEIVE_TABLE] = "RECEIVE_TABLE",
+
+    [RECEIVE_DEVICE_NOTIFICATION] = "RECEIVE_DEVICE_NOTIFICATION",
+
+    [ACK] = "ACK",
+    [NACK] = "NACK",
+};
+
+const gchar*
+get_message_name(MessageID msgid)
+{
+    if (MessageID_names[msgid]) {
+        return MessageID_names[msgid];
+    }
+
+    return "Unknown";
+
+}
 
 typedef struct {
     GObject *widget;
@@ -54,7 +121,7 @@ void show_error_message(GtkWidget *parent, gchar *message)
                                             GTK_BUTTONS_OK,
                                             "%s", message);
 
-    gtk_dialog_run(GTK_DIALOG(msg));
+    (void)gtk_dialog_run(GTK_DIALOG(msg));
     gtk_widget_destroy(msg);
 }
 
@@ -184,7 +251,7 @@ static gboolean custom_value_output_cb(GtkSpinButton *spin, EffectValues *values
         if (values->type & VALUE_TYPE_EXTRA) {
             values = values->extra;
         } else {
-            g_message("custom_value_output_cb called with out of bounds value");
+            g_warning("custom_value_output_cb called with out of bounds value");
             return FALSE;
         }
     }
@@ -306,8 +373,9 @@ static void apply_widget_setting(WidgetTreeElem *el, SettingParam *param)
         else if (GTK_IS_ADJUSTMENT(el->widget))
             gtk_adjustment_set_value(GTK_ADJUSTMENT(el->widget), (gdouble)param->value);
     } else { /* combo box */
-        if (el->value == param->value)
+        if (el->value == param->value) {
             gtk_combo_box_set_active(GTK_COMBO_BOX(el->widget), el->x);
+        }
     }
 }
 
@@ -375,6 +443,56 @@ gboolean apply_current_preset_to_gui(gpointer data)
     return FALSE;
 }
 
+/**
+ * Free the data associated with the dynamically allocated settings
+ * for the EXP_POSITION.
+ */
+void modifier_settings_exp_free(EffectSettings *settings)
+{
+    guint i;
+    guint id = settings->id;
+    guint pos = settings->position;
+    gpointer key;
+    GList *link, *next, *orig_list;
+    WidgetTreeElem *el;
+    GObject *widget;
+
+    for (i = 0; i < 2; i++) {
+
+        id = settings[i].id;
+        pos = settings[i].position;
+        key = GINT_TO_POINTER(pos <<16| id);
+        orig_list = g_tree_lookup(widget_tree, key);
+        if (!orig_list) {
+            continue;
+        }
+
+        link = g_list_first(orig_list);
+        while (link != NULL) {
+            next = link->next;
+
+            el = link->data;
+            if (el) {
+
+                widget = el->widget;
+                if (g_object_get_data(G_OBJECT(widget), "exp")) {
+                    g_slice_free(WidgetTreeElem, el);
+                    link->data = NULL;
+                }
+            }
+            link = next;
+        }
+        
+        /* Remove all the list elements from which we freed data. */
+        orig_list = g_list_remove_all(orig_list, NULL);
+
+        /* The list should be empty at this point. */
+        g_assert(!orig_list);
+
+        /* Removed them all, so remove the key from the tree.*/
+        g_tree_steal(widget_tree, key);
+    }
+}
 /**
  *  \param settings effect parameters
  *  \param amt amount of effect parameters
@@ -424,6 +542,12 @@ GtkWidget *create_grid(EffectSettings *settings, gint amt, GHashTable *widget_ta
 
         widget_tree_add(G_OBJECT(adj), settings[x].id,
                         settings[x].position, -1, -1);
+
+        if (settings[x].position == EXP_POSITION) {
+            /* Tag the adj so we can free it when we free the modifier group. */
+            g_object_set_data(G_OBJECT(adj), "exp", GINT_TO_POINTER(1));
+        }
+
         gtk_grid_attach(GTK_GRID(grid), label, 0, x, 1, 1);
         gtk_grid_attach(GTK_GRID(grid), knob, 1, x, 1, 1);
         gtk_grid_attach(GTK_GRID(grid), widget, 2, x, 1, 1);
@@ -474,8 +598,9 @@ void effect_settings_group_free(EffectSettingsGroup *group)
 {
     if (group->child != NULL) {
         /* destroy widget without parent */
-        if (gtk_widget_get_parent(group->child) == NULL)
+        if (gtk_widget_get_parent(group->child) == NULL) {
             gtk_widget_destroy(group->child);
+        }
 
         g_object_unref(group->child);
     }
@@ -496,32 +621,40 @@ void combo_box_changed_cb(GtkComboBox *widget, gpointer data)
     EffectSettingsGroup *settings = NULL;
     gchar *name = NULL;
     gint x;
+
     g_object_get(G_OBJECT(widget), "active", &x, NULL);
 
     vbox = g_object_get_data(G_OBJECT(widget), "vbox");
 
     if (x != -1) {
+        GtkWidget *new_child = NULL;
+
         name = g_strdup_printf("SettingsGroup%d", x);
         settings = g_object_get_data(G_OBJECT(widget), name);
         g_free(name);
 
-        if (settings != NULL && allow_send)
-            set_option(settings->id, settings->position, settings->type);
-
         child = g_object_get_data(G_OBJECT(widget), "active_child");
-        if (child == settings->child) {
-            return;
+        if (settings != NULL)
+        {
+            if (allow_send)
+                set_option(settings->id, settings->position, settings->type);
+
+            if (child == settings->child) {
+                return;
+            }
         }
 
         if (child != NULL) {
             gtk_container_remove(GTK_CONTAINER(gtk_widget_get_parent(gtk_widget_get_parent(vbox))), child);
         }
 
-        if (settings->child != NULL) {
+        if (settings != NULL && settings->child != NULL) {
             gtk_container_add(GTK_CONTAINER(gtk_widget_get_parent(gtk_widget_get_parent(vbox))), settings->child);
             gtk_widget_show_all(gtk_widget_get_parent(gtk_widget_get_parent(vbox)));
+            new_child = settings->child;
         }
-        g_object_set_data(G_OBJECT(widget), "active_child", settings->child);
+
+        g_object_set_data(G_OBJECT(widget), "active_child", new_child);
     }
 }
 
@@ -546,7 +679,7 @@ GtkWidget *create_widget_container(EffectGroup *group, gint amt, gint id, gint p
     gint x;
     gint cmbox_no = -1;
 
-    vbox = gtk_vbox_new(FALSE, 0);
+    vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
 
     widget_table = g_hash_table_new(g_direct_hash, g_direct_equal);
 
@@ -558,15 +691,22 @@ GtkWidget *create_widget_container(EffectGroup *group, gint amt, gint id, gint p
                 g_signal_connect(G_OBJECT(combo_box), "changed", G_CALLBACK(combo_box_changed_cb), group);
                 g_object_set_data(G_OBJECT(combo_box), "vbox", vbox);
             }
-            gtk_combo_box_text_append(GTK_COMBO_BOX_TEXT(combo_box),
-                                      NULL, group[x].label);
+
+            gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(combo_box), group[x].label);
             cmbox_no++;
 
             if ((group[x].settings != NULL) && (group[x].settings_amt > 0)) {
-                widget = create_grid(group[x].settings, group[x].settings_amt, widget_table);
+                /*
+                 * Create a grid for each combo box entry to contain per
+                 * combo box entry settings.
+                 */
+                widget = create_grid(group[x].settings,
+                                     group[x].settings_amt,
+                                     widget_table);
                 g_object_ref_sink(widget);
-            } else
+            } else {
                 widget = NULL;
+            }
 
             settings = g_slice_new(EffectSettingsGroup);
             settings->id = id;
@@ -577,11 +717,15 @@ GtkWidget *create_widget_container(EffectGroup *group, gint amt, gint id, gint p
             widget_tree_add(G_OBJECT(combo_box), id, position, group[x].type, x);
 
             name = g_strdup_printf("SettingsGroup%d", cmbox_no);
-            g_object_set_data_full(G_OBJECT(combo_box), name, settings, ((GDestroyNotify)effect_settings_group_free));
+            g_object_set_data_full(G_OBJECT(combo_box),
+                                   name, settings,
+                                   ((GDestroyNotify)effect_settings_group_free));
             g_free(name);
         } else {
             if ((group[x].settings != NULL) && (group[x].settings_amt > 0)) {
-                widget = create_grid(group[x].settings, group[x].settings_amt, widget_table);
+                widget = create_grid(group[x].settings,
+                                     group[x].settings_amt,
+                                     widget_table);
                 gtk_box_pack_end(GTK_BOX(vbox), widget, FALSE, TRUE, 0);
             }
         }
@@ -592,6 +736,157 @@ GtkWidget *create_widget_container(EffectGroup *group, gint amt, gint id, gint p
     return vbox;
 }
 
+/**
+ * Populate the vbox for an effect dependent on the modifier list.
+ *
+ * \param vbox          The vbox for the effect.
+ * \param combo_box     The combo box to repopulate.
+ * \param id            The id of the effect.
+ * \param position      The position of the effect.
+ */
+static void update_modifier_vbox(GtkWidget *vbox, GObject *combo_box, gint id, gint position)
+{
+    gint x;
+    EffectSettingsGroup *settings = NULL;
+    EffectGroup *group = get_modifier_group();
+    guint amt = get_modifier_amt();
+    GtkWidget *child = NULL;
+    GHashTable *widget_table;
+
+    widget_table = g_hash_table_new(g_direct_hash, g_direct_equal);
+
+    for (x = 0; x<amt; x++) {
+        gchar *name;
+        g_assert(group[x].label);
+
+        settings = g_slice_new(EffectSettingsGroup);
+        settings->id = id;
+        settings->type = group[x].type;
+        settings->position = position;
+
+        if (position == EXP_POSITION) {
+            child = g_object_steal_data(G_OBJECT(combo_box), "active_child");
+            child = create_grid(group[x].settings, group[x].settings_amt,
+                                widget_table);
+            g_object_ref_sink(child);
+            settings->child = child;
+        } else {
+            /* LFO has one settings group.*/
+            settings->child = NULL;
+        }
+
+        name = g_strdup_printf("SettingsGroup%d", x);
+        g_object_set_data(G_OBJECT(combo_box), name, settings);
+        g_free(name);
+
+        gtk_combo_box_text_append_text(GTK_COMBO_BOX_TEXT(combo_box), group[x].label);
+        widget_tree_add(combo_box, id, position, group[x].type, x);
+    }
+
+    g_hash_table_destroy(widget_table);
+
+    return;
+}
+
+static void clean_modifier_combo_box(GObject *combo_box, GList *list)
+{
+    EffectSettingsGroup *settings = NULL;
+    WidgetTreeElem *el;
+    gchar *name;
+    GList *link, *next, *stale_link;
+
+    link = g_list_first(list);
+
+    while (link != NULL) {
+        next = link->next;
+        el = link->data;
+        stale_link = NULL;
+
+        /* We need to clean the data associated with a combo box.
+         * This may include the per-entry settings widgets.
+         */
+        if (el->value != -1) {
+            /* This is a combo box entry. Remove the associated data. */
+            stale_link = link;
+            link = g_list_remove_link(list, link);
+            
+            name = g_strdup_printf("SettingsGroup%d", el->x);
+            settings = g_object_steal_data(G_OBJECT(combo_box), name);
+            if (settings && settings->child) {
+                gtk_widget_destroy(settings->child);
+            }
+
+            g_slice_free(EffectSettingsGroup, settings);
+            g_free(name);
+            g_slice_free(WidgetTreeElem, el);
+        }
+
+        if (stale_link) {
+            g_list_free_1(stale_link);
+        }
+
+        link = next;
+    }
+    gtk_combo_box_text_remove_all(GTK_COMBO_BOX_TEXT(combo_box));
+}
+
+/**
+ * Given a linkable effect, update the combo box for the linkable parameters.
+ *
+ * @param[in] pos Position
+ * @param[in] id Id
+ */
+void
+create_modifier_group (guint pos, guint id)
+{
+    
+    GtkWidget *vbox;
+    gpointer key;
+    WidgetTreeElem *el;
+    GList *list;
+    GObject *modifier_combo_box;
+
+    debug_msg(DEBUG_GROUP, "Building modifier group for position %d id %d \"%s\"",
+                           pos, id, get_xml_settings(id, pos)->label);
+
+    key = GINT_TO_POINTER((pos << 16) | id);
+    list = g_tree_lookup(widget_tree, key);
+
+    /* 
+     * The list will be destroyed and recreated, but we don't want to 
+     * handle the teardown ourselves. So steal it from the tree.
+     */
+    g_tree_steal(widget_tree, key);
+    if (!list) {
+        return;
+    }
+
+    el = g_list_nth_data(list, 0);
+    if (!el) {
+        g_warning("No effect settings group for position %d id %d!\n",
+                   pos, id);
+        return;
+    }
+
+    modifier_combo_box = el->widget;
+    g_assert(modifier_combo_box != NULL);
+
+    vbox = g_object_get_data(modifier_combo_box, "vbox");
+    g_assert(vbox != NULL);
+
+    clean_modifier_combo_box(modifier_combo_box, list);
+
+    update_modifier_vbox(vbox, modifier_combo_box, id, pos);
+
+    get_option(id, pos);
+
+    if (pos == EXP_POSITION) {
+        get_option(EXP_MIN, EXP_POSITION);
+        get_option(EXP_MAX, EXP_POSITION);
+    }
+}
+
+
 /**
  *  \param widgets Effect descriptions
  *  \param amt amount of effect descriptions
@@ -613,13 +908,14 @@ GtkWidget *create_vbox(Effect *widgets, gint amt, gchar *label)
 
     frame = gtk_frame_new(label);
 
-    vbox = gtk_vbox_new(FALSE, 0);
+    vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
 
     grid = gtk_grid_new();
     gtk_grid_set_column_spacing(GTK_GRID(grid), 2);
 
     for (x = 0; x<amt; x++) {
         if ((widgets[x].id != -1) && (widgets[x].position != -1)) {
+
             widget = create_on_off_button(&widgets[x]);
             gtk_grid_attach(GTK_GRID(grid), widget, 0, x, 1, 1);
 
@@ -629,21 +925,29 @@ GtkWidget *create_vbox(Effect *widgets, gint amt, gchar *label)
                 y = 0;
 
         } else if (widgets[x].label) {
+
             widget = gtk_label_new(widgets[x].label);
             gtk_grid_attach(GTK_GRID(grid), widget, 0, x, 1, 1);
             y = 0;
+
         } else {
+
             /* Default to 1 */
             if (x == 0)
                 y = 1;
         }
 
-        container = create_widget_container(widgets[x].group, widgets[x].group_amt, widgets[x].type, widgets[x].position);
+        container = create_widget_container(widgets[x].group,
+                                            widgets[x].group_amt,
+                                            widgets[x].type,
+                                            widgets[x].position);
+
         gtk_grid_attach(GTK_GRID(grid), container, 1-y, x+y, 1, 1);
     }
+    
     gtk_box_pack_start(GTK_BOX(vbox), grid, FALSE, FALSE, 2);
-
     gtk_container_add(GTK_CONTAINER(frame), vbox);
+
     return frame;
 }
 
@@ -844,15 +1148,22 @@ static void action_show_about_dialog_cb(GtkAction *action)
         "Stephen Rigler <riglersc@gmail.com>",
         "Jaco Kroon <jaco@kroon.co.za>",
         "Rafael Moreno <laocanfei@yahoo.com>",
-        "Andrew O. Shadoura <bugzilla@tut.by>",
+        "Andrew Shadura <bugzilla@tut.by>",
         "Andreas Karajannis <aakara13@googlemail.com>",
         "Miklos Aubert <miklos.aubert@gmail.com>",
         "Jonathan A. Tice <jonandtice@gmail.com>",
         "John Hammen <jhammen@gmail.com>",
         "Ahmed Toulan <thelinuxer@gmail.com>",
         "Tim LaBerge <tlaberge@visi.com>",
+        "Mauro Carvalho Chehab <maurochehab@gmail.com>",
         NULL
     };
+
+    static const gchar * const artists[] = {
+        "Islam Alwazery <wazery@ubuntu.com>",
+        NULL
+    };
+
     static const gchar copyright[] = "Copyright \xc2\xa9 2009 Tomasz Moń";
     static const gchar website[] = "http://desowin.org/gdigi/";
     static const gchar version[] = "0.3.0";
@@ -861,6 +1172,7 @@ static void action_show_about_dialog_cb(GtkAction *action)
 
     gtk_show_about_dialog(GTK_WINDOW(window),
                           "authors", authors,
+                          "artists", artists,
                           "copyright", copyright,
                           "website", website,
                           "license-type", GTK_LICENSE_GPL_3_0,
@@ -891,7 +1203,7 @@ SupportedFileTypes file_types[] = {
 
 static guint n_file_types = G_N_ELEMENTS(file_types);
 
-gchar * 
+gchar *
 get_preset_filename (int prod_id)
 {
     return file_types[prod_id].name;
@@ -928,7 +1240,7 @@ static void action_open_preset_cb(GtkAction *action)
     for (x=0; x<n_file_types; x++) {
         GtkFileFilter *current_filter = gtk_file_filter_new();
         if (file_types[x].name == NULL) {
-            g_message("Skipping NULL array entry");
+            g_warning("Skipping NULL array entry");
             continue;
         }
 
@@ -938,7 +1250,6 @@ static void action_open_preset_cb(GtkAction *action)
 
         gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog), current_filter);
         if (x == product_id) {
-            
             gtk_file_chooser_set_filter(GTK_FILE_CHOOSER(dialog), current_filter);
         }
 
@@ -1008,10 +1319,9 @@ static void action_open_preset_cb(GtkAction *action)
                         section = get_genetx_section_id(genetx->version,
                                                         genetx->type);
                         bank = 0x04;
+                        index = genetx->channel;
 
-                        if (i == 0) {
-                            index = genetx->channel;
-                        } else {
+                        if (i != 0) {
                             if (genetx->channel == GENETX_CHANNEL1) {
                                 index = GENETX_CHANNEL1_CUSTOM;
                             } else if (genetx->channel == GENETX_CHANNEL2) {
@@ -1061,15 +1371,10 @@ static void action_save_preset_cb(GtkAction *action)
                                          GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
                                          NULL);
     if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT) {
-        GError *error = NULL;
         gchar *filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog));
 
-
-
-        if (error) {
-            show_error_message(window, error->message);
-            g_error_free(error);
-            error = NULL;
+        if (filename == NULL) {
+            show_error_message(window, "No file name");
         } else {
             gchar real_filename[256];
             GList *list = get_current_preset();
@@ -1082,8 +1387,8 @@ static void action_save_preset_cb(GtkAction *action)
             write_preset_to_xml(preset, real_filename);
 
             preset_free(preset);
+            g_free(filename);
         }
-        g_free(filename);
     }
 
     gtk_widget_destroy(dialog);
@@ -1190,7 +1495,7 @@ static void add_menubar(GtkWidget *window, GtkWidget *vbox)
     gtk_window_add_accel_group(GTK_WINDOW(window), gtk_ui_manager_get_accel_group(ui));
 
     if (!gtk_ui_manager_add_ui_from_string(ui, menu_info, -1, &error)) {
-        g_message("building menus failed: %s", error->message);
+        g_warning("building menus failed: %s", error->message);
         g_error_free(error);
         error = NULL;
     }
@@ -1233,18 +1538,23 @@ void gui_create(Device *device)
     GtkWidget *widget;
     GtkWidget *notebook;
     GtkWidget *sw;             /* scrolled window to carry preset treeview */
+    GdkPixbuf *icon;
+
     gint x;
     gint i;
 
     window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
     gtk_window_set_title(GTK_WINDOW(window), "gdigi");
 
-    vbox = gtk_vbox_new(FALSE, 0);
+    icon = gdk_pixbuf_new_from_inline(-1, gdigi_icon, FALSE, NULL);
+    gtk_window_set_icon(GTK_WINDOW(window), icon);
+
+    vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
     gtk_container_add(GTK_CONTAINER(window), vbox);
 
     add_menubar(window, vbox);
 
-    hbox = gtk_hbox_new(FALSE, 0);
+    hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
     gtk_container_add(GTK_CONTAINER(vbox), hbox);
 
     sw = gtk_scrolled_window_new(NULL, NULL);
@@ -1268,14 +1578,14 @@ void gui_create(Device *device)
 
     for (i = 0; i<device->n_pages; i++) {
         GtkWidget *label = NULL;
-        vbox = gtk_vbox_new(FALSE, 0);
+        vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
         label = gtk_label_new(device->pages[i].name);
 
         gtk_notebook_append_page(GTK_NOTEBOOK(notebook), vbox, label);
 
         for (x = 0; x<device->pages[i].n_effects; x++) {
             if ((x % ((device->pages[i].n_effects+1)/device->pages[i].n_rows)) == 0) {
-                hbox = gtk_hbox_new(FALSE, 0);
+                hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
                 gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 2);
             }
             widget = create_vbox(device->pages[i].effects[x].effect, device->pages[i].effects[x].amt, device->pages[i].effects[x].label);
@@ -1287,6 +1597,10 @@ void gui_create(Device *device)
     gtk_widget_show_all(window);
 
     g_signal_connect(G_OBJECT(window), "delete_event", G_CALLBACK(gtk_main_quit), NULL);
+
+    /* Get the initial values for the linkable parameters and the globals. */
+    send_message(REQUEST_MODIFIER_LINKABLE_LIST, "\x00\x01", 2);
+    send_message(REQUEST_GLOBAL_PARAMETERS, "\x00\x01", 2);
 }
 
 /**
@@ -1306,7 +1620,7 @@ void gui_free()
  *
  *  Displays dialogbox stating that device is unsupported.
  *
- *  \return TRUE if user selects "compability mode", otherwise FALSE.
+ *  \return TRUE if user selects "compatibility mode", otherwise FALSE.
  **/
 gboolean unsupported_device_dialog(Device **device)
 {
@@ -1329,7 +1643,7 @@ gboolean unsupported_device_dialog(Device **device)
 
     label = gtk_label_new("Your device appears to be unsupported by gdigi.\n"
                           "As some of the settings may be common between different devices,\n"
-                          "you can now select compability mode with one of the supported devices.\n"
+                          "you can now select compatibility mode with one of the supported devices.\n"
                           "Please take a look at gdigi's HACKING file.");
     gtk_container_add(GTK_CONTAINER(vbox), label);
 
@@ -1345,7 +1659,8 @@ gboolean unsupported_device_dialog(Device **device)
     if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT) {
         gint number = gtk_combo_box_get_active(GTK_COMBO_BOX(combo_box));
         if (number != -1 && number <n_supported_devices) {
-            g_message("Starting %s compability mode", supported_devices[number]->name);
+            g_message("Starting %s compatibility mode",
+                      supported_devices[number]->name);
             *device = supported_devices[number];
             gtk_widget_destroy(dialog);
             return TRUE;
@@ -1365,7 +1680,6 @@ gboolean unsupported_device_dialog(Device **device)
  **/
 gint select_device_dialog (GList *devices)
 {
-
     GtkWidget *dialog;
     GtkWidget *label;
     GtkWidget *combo_box;
@@ -1385,13 +1699,14 @@ gint select_device_dialog (GList *devices)
 
     combo_box = gtk_combo_box_text_new();
     device = g_list_first(devices);
-    do {
+    while (device != NULL) {
         char *name;
 
         snd_card_get_longname(GPOINTER_TO_INT(device->data), &name);
         gtk_combo_box_text_append(GTK_COMBO_BOX_TEXT(combo_box), NULL, name);
 
-    } while ((device = g_list_next(device)));
+        device = g_list_next(device);
+    };
 
     gtk_container_add(GTK_CONTAINER(vbox), combo_box);
 

gui.h

@@ -29,5 +29,8 @@ void gui_create(Device *device);
 void gui_free();
 gboolean unsupported_device_dialog(Device **device);
 gint select_device_dialog (GList *devices);
+const gchar* get_message_name(MessageID msgid);
+void create_modifier_group (guint pos, guint id);
+void modifier_settings_exp_free(EffectSettings *settings);
 
 #endif /* GDIGI_GUI_H */

preset.c

@@ -69,7 +69,7 @@ static void XMLCALL start(void *data, const char *el, const char **attr) {
     if (g_strcmp0(el, "Params") == 0) {
         ad->section = SECTION_PARAMS;
         if (ad->preset->params != NULL)
-            g_message("Params aleady exists!");
+            g_warning("Params aleady exists!");
     } else if (g_strcmp0(el, "Param") == 0) {
         SettingParam *param = setting_param_new();
         ad->preset->params = g_list_prepend(ad->preset->params, param);
@@ -84,7 +84,7 @@ static void XMLCALL start(void *data, const char *el, const char **attr) {
     } else if (g_strcmp0(el, "Genetx") == 0) {
         ad->section = SECTION_GENETX;
         if (ad->preset->genetxs != NULL)
-            g_message("Genetx already exists!");
+            g_warning("Genetx already exists!");
     } else if (g_strcmp0(el, "GenetxModel") == 0) {
         SettingGenetx *genetx = setting_genetx_new();
         ad->preset->genetxs = g_list_prepend(ad->preset->genetxs, genetx);
@@ -160,7 +160,7 @@ static void XMLCALL text_cb(void *data, const char* text, int len)
                 } else if (g_strcmp0(value, "Version2") == 0) {
                     genetx->version = GENETX_VERSION_2;
                 } else {
-                    g_message("Unknown GeNetX version: %s", value);
+                    g_warning("Unknown GeNetX version: %s", value);
                 }
                 break;
             case PARSER_TYPE_GENETX_TYPE:
@@ -169,7 +169,7 @@ static void XMLCALL text_cb(void *data, const char* text, int len)
                 } else if (g_strcmp0(value, "Cabinet") == 0) {
                     genetx->type = GENETX_TYPE_CABINET;
                 } else {
-                    g_message("Unknown GeNetX type: %s", value);
+                    g_warning("Unknown GeNetX type: %s", value);
                 }
                 break;
             case PARSER_TYPE_GENETX_CHANNEL:
@@ -178,7 +178,7 @@ static void XMLCALL text_cb(void *data, const char* text, int len)
                 } else if (g_strcmp0(value, "Channel2") == 0) {
                     genetx->channel = GENETX_CHANNEL2;
                 } else {
-                    g_message("Unknown GeNetX channel: %s", value);
+                    g_warning("Unknown GeNetX channel: %s", value);
                 }
                 break;
             case PARSER_TYPE_GENETX_NAME:
@@ -219,7 +219,7 @@ Preset *create_preset_from_xml_file(gchar *filename, GError **error)
     gchar *contents;
 
     if (g_file_get_contents(filename, &contents, NULL, &err) == FALSE) {
-        g_message("Failed to get %s contents: %s", filename, err->message);
+        g_warning("Failed to get %s contents: %s", filename, err->message);
         *error = g_error_copy(err);
         g_error_free(err);
         return NULL;
@@ -308,12 +308,16 @@ Preset *create_preset_from_data(GList *list)
                 modified = (unsigned char)data->str[11+strlen(name)];
 
                 if ((bank == PRESETS_EDIT_BUFFER) && (number == 0)) {
-                    g_message("Received current edit buffer");
+                    debug_msg(DEBUG_MSG2HOST,
+                              "RECEIVE_PRESET_START:  current edit buffer");
                 } else {
-                    g_message("Received preset %d from bank %d", number, bank);
+                    debug_msg(DEBUG_MSG2HOST,
+                              "RECEIVE_PRESET_START: preset %d from bank %d",
+                              number, bank);
                 }
 
-                g_message("Modified flag: %d Name: %s", modified, name);
+                debug_msg(DEBUG_MSG2HOST, "Name: %s, %sodified",
+                                          name, modified ? "M" : "Not m");
                 preset->name = name;
                 break;
             case RECEIVE_PRESET_PARAMETERS:
@@ -326,15 +330,20 @@ Preset *create_preset_from_data(GList *list)
                     SettingParam *param = setting_param_new_from_data(&data->str[x], &x);
                     n++;
                     preset->params = g_list_prepend(preset->params, param);
-                    g_message("%d ID %d Position %d Value %d", n, param->id, param->position, param->value);
+                    if (debug_flag_is_set(DEBUG_MSG2HOST)) {
+                        GString *ipv = format_ipv(param->id, param->position, param->value);
+                        debug_msg(DEBUG_MSG2HOST, "%3d %s", n, ipv->str);
+                        g_string_free(ipv, TRUE);
+                    }
                 } while ((x < data->len) && n<total);
-                g_message("TOTAL %d", total);
+                debug_msg(DEBUG_MSG2HOST, "TOTAL %d", total);
                 preset->params = g_list_sort(preset->params, params_cmp);
                 break;
             case RECEIVE_PRESET_END:
                 break;
             default:
-                g_message("Unhandled message in preset messages list");
+                g_warning("Unhandled message 0x%x in preset messages list",
+                          get_message_id(data));
         }
     }
 

preset_xml.c

@@ -30,6 +30,7 @@
 extern XmlSettings xml_settings[];
 extern guint n_xml_settings;
 extern EffectValues values_on_off;
+
 /**
  *  \param id modifier ID
  *  \param position modifier position
@@ -52,16 +53,18 @@ XmlSettings *get_xml_settings (guint id, guint position)
 }
 
 gchar *
-map_xml_value(XmlSettings *xml, gint value)
+map_xml_value (XmlSettings *xml, EffectValues *values,  gint value)
 {
-    switch (xml->values->type) {
+    switch (values->type) {
     case VALUE_TYPE_LABEL:
-        if ((xml->values == &values_on_off) && (value > 1)) {
-            g_message("Skipping modifier->label %s\n", xml->label);
+        if ((values == &values_on_off) && (value > 1)) {
+            g_warning("Skipping modifier->label %s\n", xml->label);
             return NULL;
         }   
-        if (value > xml->values->max || value < xml->values->min) {
-            g_message("%s value %d out of range %0.1f %0.1f",  xml->label, value, xml->values->min, xml->values->max);
+
+        if (value > values->max || value < values->min) {
+            g_warning("%s value %d out of range %0.1f %0.1f",
+                      xml->label, value, xml->values->min, xml->values->max);
         } 
         {
             XmlLabel *labels = xml->xml_labels;
@@ -83,10 +86,9 @@ map_xml_value(XmlSettings *xml, gint value)
     return NULL;
 }
 
-
-gboolean value_is_extra (EffectValues *val, SettingParam *param)
+gboolean value_is_extra (EffectValues *val, int value)
 {
-    if ((param->value < val->min) || (param->value > val->max)) {
+    if ((value < val->min) || (value > val->max)) {
         return TRUE;
     }
     return FALSE;
@@ -111,7 +113,7 @@ write_preset_to_xml(Preset *preset, gchar *filename)
         return;
     }
 
-    /* 
+    /*
      * Start the document with the xml default for the version,
      * encoding and the default for the standalone declaration.
      */
@@ -130,7 +132,7 @@ write_preset_to_xml(Preset *preset, gchar *filename)
     rc = xmlTextWriterWriteAttribute(writer, BAD_CAST "SchemaVersion",
                                      BAD_CAST "1.2");
 
-   
+
     rc = xmlTextWriterWriteAttribute(writer, BAD_CAST "xmlns",
                                      BAD_CAST "http://www.digitech.com/xml/preset");
 
@@ -142,9 +144,9 @@ write_preset_to_xml(Preset *preset, gchar *filename)
     while (iter_params) {
         XmlSettings *xml;
         SettingParam *param = (SettingParam *) iter_params->data;
- 
+
         if (param->id == last_id && param->position == last_position) {
-            g_message("Skipping duplicate parameter id %d position %d",
+            g_warning("Skipping duplicate parameter id %d position %d",
                        last_id, last_position);
             iter_params  = iter_params->next;
             continue;
@@ -177,7 +179,7 @@ write_preset_to_xml(Preset *preset, gchar *filename)
                                                    BAD_CAST xml->label);
             values = xml->values;
             type = values->type;
-            while ((type & VALUE_TYPE_EXTRA) && value_is_extra(values, param)) {
+            while ((type & VALUE_TYPE_EXTRA) && value_is_extra(values, param->value)) {
                 values = values->extra;
                 type = values->type;
             }
@@ -206,10 +208,11 @@ write_preset_to_xml(Preset *preset, gchar *filename)
             switch (type) {
             case VALUE_TYPE_LABEL:
             {
-                char *textp = map_xml_value(xml, param->value);
+                char *textp = map_xml_value(xml, values, param->value);
                 if (!textp) {
-                    g_message("Unable to map %s value %d for id %d position %d",
-                            xml->label, param->value, param->id, param->position);
+                    g_warning("Unable to map %s value %d for id %d position %d",
+                              xml->label, param->value, param->id,
+                              param->position);
                     textp = "";
                 }
                 rc = xmlTextWriterWriteElement(writer, BAD_CAST "Text",
@@ -223,7 +226,7 @@ write_preset_to_xml(Preset *preset, gchar *filename)
                     double value = (param->value + offset) * step;
                     rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "Text",
                             "%0.2f%s", value, suffix);
-                } else {    
+                } else {
                     gint value = (param->value + offset) * step;
                     rc = xmlTextWriterWriteFormatElement(writer, BAD_CAST "Text",
                             "%d%s", value, suffix);
@@ -237,20 +240,16 @@ write_preset_to_xml(Preset *preset, gchar *filename)
                 break;
 
             default:
-                g_message("Unhandled value type %d", type);
+                g_warning("Unhandled value type %d", type);
                 break;
             }
         }
-        
+
         rc = xmlTextWriterEndElement(writer);
 
         iter_params  = iter_params->next;
     }
-  
-  /* Here we could close the elements ORDER and EXAMPLE using the
-     * function xmlTextWriterEndElement, but since we do not want to
-     * write any other elements, we simply call xmlTextWriterEndDocument,
-     * which will do all the work. */
+
     rc = xmlTextWriterEndDocument(writer);
     if (rc < 0) {
         printf("testXmlwriterFilename: Error at xmlTextWriterEndDocument\n");