add compability mode dialog

TODO

@@ -4,3 +4,4 @@
 -buildsystem (install knob.png to share dir, don't use inline knob pixbuf)
 -add expression pedal settings to gui
 -read asynchronously from MIDI IN
+-guess device port when user doesn't explicitly provide it (don't use hardcoded "hw:1,0,0")

effects.c

@@ -1262,7 +1262,7 @@ static Effect rp500_eq_effect[] = {
     {"Enable Equalizer", EQ_ON_OFF, EQ_POSITION, rp500_eq_group, G_N_ELEMENTS(rp500_eq_group)},
 };
 
-EffectList rp250_effects[] = {
+static EffectList rp250_effects[] = {
     {"Wah", wah_effect, G_N_ELEMENTS(wah_effect)},
     {"Amplifier", rp250_amp_effect, G_N_ELEMENTS(rp250_amp_effect)},
     {"Equalizer", rp250_eq_effect, G_N_ELEMENTS(rp250_eq_effect)},
@@ -1274,9 +1274,9 @@ EffectList rp250_effects[] = {
     {"Reverb", reverb_effect, G_N_ELEMENTS(reverb_effect)},
 };
 
-int n_rp250_effects = G_N_ELEMENTS(rp250_effects);
+static int n_rp250_effects = G_N_ELEMENTS(rp250_effects);
 
-EffectList rp500_effects[] = {
+static EffectList rp500_effects[] = {
     {"Wah", wah_effect, G_N_ELEMENTS(wah_effect)},
     {"Amplifier", rp500_amp_effect, G_N_ELEMENTS(rp500_amp_effect)},
     {"Equalizer", rp500_eq_effect, G_N_ELEMENTS(rp500_eq_effect)},
@@ -1288,7 +1288,14 @@ EffectList rp500_effects[] = {
     {"Reverb", reverb_effect, G_N_ELEMENTS(reverb_effect)},
 };
 
-int n_rp500_effects = G_N_ELEMENTS(rp500_effects);
+static int n_rp500_effects = G_N_ELEMENTS(rp500_effects);
+
+SupportedDevices supported_devices[] = {
+    {"DigiTech RP250", rp250_effects, G_N_ELEMENTS(rp250_effects)},
+    {"DigiTech RP500", rp500_effects, G_N_ELEMENTS(rp500_effects)},
+};
+
+int n_supported_devices = G_N_ELEMENTS(supported_devices);
 
 #endif /* DOXYGEN_SHOULD_SKIP_THIS */
 
@@ -1598,13 +1605,11 @@ gboolean get_effect_list(unsigned char device_id, unsigned char family_id,
                     *n_list = n_rp500_effects;
                     return TRUE;
                 default:
-                    g_warning("Unsupported RP model. Using RP250-compability mode!");
-                    *list = rp250_effects;
-                    *n_list = n_rp250_effects;
-                    return TRUE;
+                    g_message("Unsupported RP model!");
+                    return FALSE;
             }
         default:
-            g_error("Unsupported device family!");
+            g_message("Unsupported device family!");
             return FALSE;
     }
 }

effects.h

@@ -60,6 +60,12 @@ typedef struct {
     gint group_amt;
 } ModifierGroup;
 
+typedef struct {
+    gchar *name;
+    EffectList *list;
+    int n_list;
+} SupportedDevices;
+
 ModifierGroup *modifier_linkable_list();
 void modifier_group_free(ModifierGroup *modifier_group);
 gboolean get_effect_list(unsigned char device_id, unsigned char family_id,

gdigi.c

@@ -566,11 +566,16 @@ int main(int argc, char *argv[]) {
         if (request_who_am_i(&device_id, &family_id, &product_id) == FALSE) {
             show_error_message(NULL, "No suitable reply from device");
         } else {
-            EffectList *list;
-            int n_list;
+            EffectList *list = NULL;
+            int n_list = -1;
+
             if (get_effect_list(device_id, family_id, product_id, &list, &n_list) == FALSE) {
-                show_error_message(NULL, "Unsupported hardware. Please check HACKING file.");
-            } else {
+                if (unsupported_device_dialog(&list, &n_list) == FALSE) {
+                    g_message("Shutting down");
+                }
+            }
+
+            if (list != NULL && n_list != -1) {
                 gui_create(list, n_list);
                 gtk_main();
                 gui_free();

gui.c

@@ -22,13 +22,6 @@
 #include "gtkknob.h"
 #include "knob.h"
 
-#ifndef DOXYGEN_SHOULD_SKIP_THIS
-
-extern EffectList effects[];
-extern int n_effects;
-
-#endif /* DOXYGEN_SHOULD_SKIP_THIS */
-
 typedef struct {
     GtkObject *widget;
     gint id;
@@ -908,3 +901,57 @@ void gui_free()
     gtk_knob_animation_free(knob_anim);
     knob_anim = NULL;
 }
+
+/**
+ *  \param list Variable to hold effect list
+ *  \param n_list Variable to hold length of effect list
+ *
+ *  Displays dialogbox stating that device is unsupported.
+ *
+ *  \return TRUE if user selects "compability mode", otherwise FALSE.
+ **/
+gboolean unsupported_device_dialog(EffectList **list, int *n_list)
+{
+    extern SupportedDevices supported_devices[];
+    extern int n_supported_devices;
+
+    GtkWidget *dialog;
+    GtkWidget *label;
+    GtkWidget *combo_box;
+    int x;
+
+    dialog = gtk_dialog_new_with_buttons("Unsupported device",
+                                         NULL, GTK_DIALOG_MODAL,
+                                         GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
+                                         GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
+                                         NULL);
+
+
+    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"
+                          "Please take a look at gdigi's HACKING file.");
+    gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), label);
+
+    combo_box = gtk_combo_box_new_text();
+    for (x=0; x<n_supported_devices; x++) {
+        gtk_combo_box_append_text(GTK_COMBO_BOX(combo_box), supported_devices[x].name);
+    }
+
+    gtk_container_add(GTK_CONTAINER(GTK_DIALOG(dialog)->vbox), combo_box);
+
+    gtk_widget_show_all(GTK_DIALOG(dialog)->vbox);
+    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);
+            *list = supported_devices[number].list;
+            *n_list = supported_devices[number].n_list;
+            gtk_widget_destroy(dialog);
+            return TRUE;
+        }
+    }
+
+    gtk_widget_destroy(dialog);
+    return FALSE;
+}

gui.h

@@ -17,10 +17,12 @@
 #ifndef GDIGI_GUI_H
 #define GDIGI_GUI_H
 
+#include <glib.h>
 #include "effects.h"
 
 void show_error_message(GtkWidget *parent, gchar *message);
 void gui_create(EffectList *list, int n_list);
 void gui_free();
+gboolean unsupported_device_dialog(EffectList **list, int *n_list);
 
 #endif /* GDIGI_GUI_H */