Convert the EQ menus

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@12398 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 787 insertions, 0 deletions

diff --git a/apps/menus/eq_menu.c b/apps/menus/eq_menu.c
new file mode 100644
index 0000000000..8473b6b233
--- /dev/null
+++ b/apps/menus/eq_menu.c
@@ -0,0 +1,787 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: eq_menu.c 12179 2007-02-01 23:08:15Z amiconn $
+ *
+ * Copyright (C) 2006 Dan Everton
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "config.h"
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+#include "eq_menu.h"
+#include "system.h"
+#include "kernel.h"
+#include "lcd.h"
+#include "menu.h"
+#include "action.h"
+#include "mp3_playback.h"
+#include "settings.h"
+#include "statusbar.h"
+#include "screens.h"
+#include "icons.h"
+#include "font.h"
+#include "lang.h"
+#include "sprintf.h"
+#include "talk.h"
+#include "misc.h"
+#include "sound.h"
+#include "splash.h"
+#include "dsp.h"
+#include "tree.h"
+#include "talk.h"
+#include "screen_access.h"
+#include "keyboard.h"
+#include "gui/scrollbar.h"
+#include "eq_menu.h"
+#ifdef HAVE_WM8758
+#include "wm8758.h"
+#endif
+
+
+
+/*
+ * Utility functions
+ */
+
+void eq_gain_format(char* buffer, int buffer_size, int value, const char* unit)
+{
+    int v = abs(value);
+
+    snprintf(buffer, buffer_size, "%s%d.%d %s", value < 0 ? "-" : "",
+        v / EQ_USER_DIVISOR, v % EQ_USER_DIVISOR, unit);
+}
+
+void eq_q_format(char* buffer, int buffer_size, int value, const char* unit)
+{
+    snprintf(buffer, buffer_size, "%d.%d %s", value / EQ_USER_DIVISOR, value % EQ_USER_DIVISOR, unit);
+}
+
+void eq_precut_format(char* buffer, int buffer_size, int value, const char* unit)
+{
+    snprintf(buffer, buffer_size, "%s%d.%d %s", value == 0 ? " " : "-",
+        value / EQ_USER_DIVISOR, value % EQ_USER_DIVISOR, unit);
+}
+
+/*
+ * Settings functions
+ */
+int enable_callback(int action, const struct menu_item_ex *this_item)
+{
+	int i;
+	(void)this_item;
+	if (action == ACTION_EXIT_MENUITEM)
+	{
+		dsp_set_eq(global_settings.eq_enabled); 
+		dsp_set_eq_precut(global_settings.eq_precut);	
+		/* Update all bands */
+		for(i = 0; i < 5; i++) {
+			dsp_set_eq_coefs(i);
+		}
+	}
+	return action;
+}
+MENUITEM_SETTING(eq_enable, &global_settings.eq_enabled, enable_callback);
+MENUITEM_SETTING(eq_precut, &global_settings.eq_precut, NULL);
+
+int dsp_set_coefs_callback(int action, const struct menu_item_ex *this_item)
+{
+	(void)this_item;
+	if (action == ACTION_EXIT_MENUITEM)
+	{
+		/* for now, set every band... figure out a better way later */
+		int i=0;
+		for (i=0; i<5; i++)
+			dsp_set_eq_coefs(i);
+	}
+	return action;
+}
+
+char* gainitem_get_name(int selected_item, void * data, char *buffer)
+{
+	(void)selected_item;
+	int *setting = (int*)data;
+	snprintf(buffer, MAX_PATH, str(LANG_EQUALIZER_GAIN_ITEM), *setting);
+	return buffer;
+}
+
+int do_option(void* param)
+{
+	const struct menu_item_ex *setting = (const struct menu_item_ex*)param;
+	do_setting_from_menu(setting);
+	return 0;
+}
+
+MENUITEM_SETTING(cutoff_0, &global_settings.eq_band0_cutoff, dsp_set_coefs_callback);
+MENUITEM_SETTING(cutoff_1, &global_settings.eq_band1_cutoff, dsp_set_coefs_callback);
+MENUITEM_SETTING(cutoff_2, &global_settings.eq_band2_cutoff, dsp_set_coefs_callback);
+MENUITEM_SETTING(cutoff_3, &global_settings.eq_band3_cutoff, dsp_set_coefs_callback);
+MENUITEM_SETTING(cutoff_4, &global_settings.eq_band4_cutoff, dsp_set_coefs_callback);
+
+MENUITEM_SETTING(q_0, &global_settings.eq_band0_q, dsp_set_coefs_callback);
+MENUITEM_SETTING(q_1, &global_settings.eq_band1_q, dsp_set_coefs_callback);
+MENUITEM_SETTING(q_2, &global_settings.eq_band2_q, dsp_set_coefs_callback);
+MENUITEM_SETTING(q_3, &global_settings.eq_band3_q, dsp_set_coefs_callback);
+MENUITEM_SETTING(q_4, &global_settings.eq_band4_q, dsp_set_coefs_callback);
+
+MENUITEM_SETTING(gain_0, &global_settings.eq_band0_gain, dsp_set_coefs_callback);
+MENUITEM_SETTING(gain_1, &global_settings.eq_band1_gain, dsp_set_coefs_callback);
+MENUITEM_SETTING(gain_2, &global_settings.eq_band2_gain, dsp_set_coefs_callback);
+MENUITEM_SETTING(gain_3, &global_settings.eq_band3_gain, dsp_set_coefs_callback);
+MENUITEM_SETTING(gain_4, &global_settings.eq_band4_gain, dsp_set_coefs_callback);
+
+MENUITEM_FUNCTION_WPARAM_DYNTEXT(gain_item_0, do_option, (void*)&gain_0, NULL,
+									gainitem_get_name, 
+									&global_settings.eq_band0_cutoff, NOICON);
+MENUITEM_FUNCTION_WPARAM_DYNTEXT(gain_item_1, do_option, (void*)&gain_1, NULL,
+									gainitem_get_name, 
+									&global_settings.eq_band1_cutoff, NOICON);
+MENUITEM_FUNCTION_WPARAM_DYNTEXT(gain_item_2, do_option, (void*)&gain_2, NULL,
+									gainitem_get_name, 
+									&global_settings.eq_band2_cutoff, NOICON);
+MENUITEM_FUNCTION_WPARAM_DYNTEXT(gain_item_3, do_option, (void*)&gain_3, NULL,
+									gainitem_get_name, 
+									&global_settings.eq_band3_cutoff, NOICON);
+MENUITEM_FUNCTION_WPARAM_DYNTEXT(gain_item_4, do_option, (void*)&gain_4, NULL,
+									gainitem_get_name, 
+									&global_settings.eq_band4_cutoff, NOICON);
+									
+MAKE_MENU(gain_menu, ID2P(LANG_EQUALIZER_GAIN), NULL, NOICON, &gain_item_0, 
+			&gain_item_1, &gain_item_2, &gain_item_3, &gain_item_4);
+
+static const struct menu_item_ex *band_items[3][3] = {
+	{ &cutoff_1, &q_1, &gain_1 },
+	{ &cutoff_2, &q_2, &gain_2 },
+	{ &cutoff_3, &q_3, &gain_3 }
+};
+char* centerband_get_name(int selected_item, void * data, char *buffer)
+{
+	(void)selected_item;
+	int band = (int)data;
+	snprintf(buffer, MAX_PATH, str(LANG_EQUALIZER_BAND_PEAK), band);
+	return buffer;
+}
+int do_center_band_menu(void* param)
+{
+	int band = (int)param;
+	struct menu_item_ex menu;
+	struct menu_callback_with_desc cb_and_desc;
+	char desc[MAX_PATH];
+	
+	cb_and_desc.menu_callback = NULL;
+	snprintf(desc, MAX_PATH, str(LANG_EQUALIZER_BAND_PEAK), band);
+	cb_and_desc.desc = desc;
+	cb_and_desc.icon = bitmap_icons_6x8[Icon_EQ];
+	menu.flags = MT_MENU|(3<<MENU_COUNT_SHIFT)|MENU_HAS_DESC;
+	menu.submenus = band_items[band-1];
+	menu.callback_and_desc = &cb_and_desc;
+	do_menu(&menu);
+	return 0;
+}
+MAKE_MENU(band_0_menu, ID2P(LANG_EQUALIZER_BAND_LOW_SHELF), NULL, 
+			bitmap_icons_6x8[Icon_EQ], &cutoff_0, &q_0, &gain_0);
+MENUITEM_FUNCTION_WPARAM_DYNTEXT(band_1_menu, do_center_band_menu, (void*)1, NULL,
+									centerband_get_name, (void*)1, bitmap_icons_6x8[Icon_EQ]);
+MENUITEM_FUNCTION_WPARAM_DYNTEXT(band_2_menu, do_center_band_menu, (void*)2, NULL,
+									centerband_get_name, (void*)2, bitmap_icons_6x8[Icon_EQ]);
+MENUITEM_FUNCTION_WPARAM_DYNTEXT(band_3_menu, do_center_band_menu, (void*)3, NULL,
+									centerband_get_name, (void*)3, bitmap_icons_6x8[Icon_EQ]);
+MAKE_MENU(band_4_menu, ID2P(LANG_EQUALIZER_BAND_HIGH_SHELF), NULL, 
+			bitmap_icons_6x8[Icon_EQ], &cutoff_4, &q_4, &gain_4);
+
+MAKE_MENU(advanced_eq_menu_, ID2P(LANG_EQUALIZER_ADVANCED), NULL, bitmap_icons_6x8[Icon_EQ],
+			&band_0_menu, &band_1_menu, &band_2_menu, &band_3_menu, &band_4_menu);
+
+
+enum eq_slider_mode {
+    GAIN,
+    CUTOFF,
+    Q,
+};
+
+enum eq_type {
+    LOW_SHELF,
+    PEAK,
+    HIGH_SHELF
+};
+
+/* Draw the UI for a whole EQ band */
+static int draw_eq_slider(struct screen * screen, int x, int y,
+    int width, int cutoff, int q, int gain, bool selected,
+    enum eq_slider_mode mode, enum eq_type type)
+{
+    char buf[26];
+    const char separator[2] = " ";
+    int steps, min_item, max_item;
+    int abs_gain = abs(gain);
+    int current_x, total_height, separator_width, separator_height;
+    int w, h;
+    const int slider_height = 6;  
+
+    switch(mode) {
+    case Q:
+        steps = EQ_Q_MAX - EQ_Q_MIN;
+        min_item = q - EQ_Q_STEP - EQ_Q_MIN;
+        max_item = q + EQ_Q_STEP - EQ_Q_MIN;
+        break;        
+    case CUTOFF:
+        steps = EQ_CUTOFF_MAX - EQ_CUTOFF_MIN;
+        min_item = cutoff - EQ_CUTOFF_FAST_STEP * 2;
+        max_item = cutoff + EQ_CUTOFF_FAST_STEP * 2;
+        break;         
+    case GAIN:
+    default:
+        steps = EQ_GAIN_MAX - EQ_GAIN_MIN;
+        min_item = abs(EQ_GAIN_MIN) + gain - EQ_GAIN_STEP * 5;
+        max_item = abs(EQ_GAIN_MIN) + gain + EQ_GAIN_STEP * 5;
+        break;
+    }
+
+    /* Start two pixels in, one for border, one for margin */
+    current_x = x + 2;
+
+    /* Figure out how large our separator string is */
+    screen->getstringsize(separator, &separator_width, &separator_height);
+
+    /* Total height includes margins, text, and line selector */
+    total_height = separator_height + slider_height + 2 + 3;
+
+    /* Print out the band label */
+    if (type == LOW_SHELF) {
+        screen->putsxy(current_x, y + 2, "LS:");
+        screen->getstringsize("LS:", &w, &h);
+    } else if (type == HIGH_SHELF) {
+        screen->putsxy(current_x, y + 2, "HS:");
+        screen->getstringsize("HS:", &w, &h);
+    } else {
+        screen->putsxy(current_x, y + 2, "PK:");
+        screen->getstringsize("PK:", &w, &h);
+    }
+    current_x += w;
+
+    /* Print separator */
+    screen->set_drawmode(DRMODE_SOLID);
+    screen->putsxy(current_x, y + 2, separator);
+    current_x += separator_width;
+#if NB_SCREENS > 1
+    if (screen->screen_type == SCREEN_REMOTE) {
+        if (mode == GAIN) {
+            screen->putsxy(current_x, y + 2, str(LANG_EQUALIZER_BAND_GAIN));
+            screen->getstringsize(str(LANG_EQUALIZER_BAND_GAIN), &w, &h);
+        } else if (mode == CUTOFF) {
+            screen->putsxy(current_x, y + 2, str(LANG_EQUALIZER_BAND_CUTOFF));
+            screen->getstringsize(str(LANG_EQUALIZER_BAND_CUTOFF), &w, &h);
+        } else {
+            screen->putsxy(current_x, y + 2, str(LANG_EQUALIZER_BAND_Q));
+            screen->getstringsize(str(LANG_EQUALIZER_BAND_Q), &w, &h);
+        }
+
+        /* Draw horizontal slider. Reuse scrollbar for this */
+        gui_scrollbar_draw(screen, x + 3, y + h + 3, width - 6, slider_height, steps,
+                           min_item, max_item, HORIZONTAL);
+    
+        /* Print out cutoff part */
+        snprintf(buf, sizeof(buf), "%sGain     %s%2d.%ddB",mode==GAIN?" > ":"   ", gain < 0 ? "-" : " ",
+                 abs_gain / EQ_USER_DIVISOR, abs_gain % EQ_USER_DIVISOR);
+        screen->getstringsize(buf, &w, &h);
+        y = 3*h;
+        screen->putsxy(0, y, buf);
+        /* Print out cutoff part */
+        snprintf(buf, sizeof(buf),  "%sCutoff   %5dHz",mode==CUTOFF?" > ":"   ", cutoff);
+        y += h;
+        screen->putsxy(0, y, buf);
+        snprintf(buf, sizeof(buf), "%sQ setting %d.%d Q",mode==Q?" > ":"   ", q / EQ_USER_DIVISOR,
+                 q % EQ_USER_DIVISOR);
+        y += h;
+        screen->putsxy(0, y, buf);
+        return y;
+    }
+#endif
+    
+    /* Print out gain part of status line */
+    snprintf(buf, sizeof(buf), "%s%2d.%ddB", gain < 0 ? "-" : " ",
+        abs_gain / EQ_USER_DIVISOR, abs_gain % EQ_USER_DIVISOR);
+
+    if (mode == GAIN && selected)
+        screen->set_drawmode(DRMODE_SOLID | DRMODE_INVERSEVID);
+
+    screen->putsxy(current_x, y + 2, buf);
+    screen->getstringsize(buf, &w, &h);
+    current_x += w;
+
+    /* Print separator */
+    screen->set_drawmode(DRMODE_SOLID);
+    screen->putsxy(current_x, y + 2, separator);
+    current_x += separator_width;
+
+    /* Print out cutoff part of status line */
+    snprintf(buf, sizeof(buf),  "%5dHz", cutoff);
+
+    if (mode == CUTOFF && selected)
+        screen->set_drawmode(DRMODE_SOLID | DRMODE_INVERSEVID);
+
+    screen->putsxy(current_x, y + 2, buf);
+    screen->getstringsize(buf, &w, &h);
+    current_x += w;
+
+    /* Print separator */
+    screen->set_drawmode(DRMODE_SOLID);
+    screen->putsxy(current_x, y + 2, separator);
+    current_x += separator_width;
+
+    /* Print out Q part of status line */
+    snprintf(buf, sizeof(buf), "%d.%d Q", q / EQ_USER_DIVISOR,
+        q % EQ_USER_DIVISOR);
+
+    if (mode == Q && selected)
+        screen->set_drawmode(DRMODE_SOLID | DRMODE_INVERSEVID);
+
+    screen->putsxy(current_x, y + 2, buf);
+    screen->getstringsize(buf, &w, &h);
+    current_x += w;
+
+    screen->set_drawmode(DRMODE_SOLID);
+
+    /* Draw selection box */
+    if (selected) {
+        screen->drawrect(x, y, width, total_height);
+    }
+
+    /* Draw horizontal slider. Reuse scrollbar for this */
+    gui_scrollbar_draw(screen, x + 3, y + h + 3, width - 6, slider_height, steps,
+        min_item, max_item, HORIZONTAL);
+
+    return total_height;
+}
+
+/* Draw's all the EQ sliders. Returns the total height of the sliders drawn */
+static int draw_eq_sliders(int current_band, enum eq_slider_mode mode)
+{
+    int i, gain, q, cutoff;
+    int height = 2; /* Two pixel margin */
+    int slider_width[NB_SCREENS];
+    int *setting = &global_settings.eq_band0_cutoff;
+    enum eq_type type;
+
+    FOR_NB_SCREENS(i)
+        slider_width[i] = screens[i].width - 4; /* two pixel margin on each side */  
+    
+    for (i=0; i<5; i++) {
+        cutoff = *setting++;
+        q = *setting++;
+        gain = *setting++;
+
+        if (i == 0) {
+            type = LOW_SHELF;
+        } else if (i == 4) {
+            type = HIGH_SHELF;
+        } else {
+            type = PEAK;
+        }
+        height += draw_eq_slider(&(screens[SCREEN_MAIN]), 2, height,
+                      slider_width[SCREEN_MAIN], cutoff, q, gain, 
+                      i == current_band, mode, type);
+#if NB_SCREENS > 1
+        if (i == current_band)
+            draw_eq_slider(&(screens[SCREEN_REMOTE]), 2, 0,
+                      slider_width[SCREEN_REMOTE], cutoff, q, gain,1, mode, type);
+#endif
+        /* add a margin */
+        height += 2;
+    }
+
+    return height;
+}
+
+/* Provides a graphical means of editing the EQ settings */
+bool eq_menu_graphical(void)
+{
+    bool exit_request = false;
+    bool result = true;
+    bool has_changed = false;
+    int button;
+    int *setting;
+    int current_band, y, step, fast_step, min, max, voice_unit;
+    enum eq_slider_mode mode;
+    enum eq_type current_type;
+    char buf[24];
+    int i;
+
+    FOR_NB_SCREENS(i) {
+        screens[i].setfont(FONT_SYSFIXED);
+        screens[i].clear_display();
+    }
+    
+    /* Start off editing gain on the first band */
+    mode = GAIN;
+    current_type = LOW_SHELF;
+    current_band = 0;
+    
+    while (!exit_request) {
+        
+        FOR_NB_SCREENS(i) {
+            /* Clear the screen. The drawing routines expect this */
+            screens[i].clear_display();        
+            /* Draw equalizer band details */
+            y = draw_eq_sliders(current_band, mode);
+        }
+
+        /* Set pointer to the band data currently editable */
+        if (mode == GAIN) {
+            /* gain */
+            setting = &global_settings.eq_band0_gain;
+            setting += current_band * 3;
+
+            step = EQ_GAIN_STEP;
+            fast_step = EQ_GAIN_FAST_STEP;
+            min = EQ_GAIN_MIN;
+            max = EQ_GAIN_MAX;
+            voice_unit = UNIT_DB;
+            
+            snprintf(buf, sizeof(buf), str(LANG_SYSFONT_EQUALIZER_EDIT_MODE),
+                str(LANG_SYSFONT_EQUALIZER_BAND_GAIN));
+            
+            screens[SCREEN_MAIN].putsxy(2, y, buf);
+        } else if (mode == CUTOFF) {
+            /* cutoff */
+            setting = &global_settings.eq_band0_cutoff;
+            setting += current_band * 3;
+
+            step = EQ_CUTOFF_STEP;
+            fast_step = EQ_CUTOFF_FAST_STEP;
+            min = EQ_CUTOFF_MIN;
+            max = EQ_CUTOFF_MAX;
+            voice_unit = UNIT_HERTZ;
+
+            snprintf(buf, sizeof(buf), str(LANG_SYSFONT_EQUALIZER_EDIT_MODE),
+                str(LANG_SYSFONT_EQUALIZER_BAND_CUTOFF));
+            
+            screens[SCREEN_MAIN].putsxy(2, y, buf);
+        } else {
+            /* Q */
+            setting = &global_settings.eq_band0_q;
+            setting += current_band * 3;
+
+            step = EQ_Q_STEP;
+            fast_step = EQ_Q_FAST_STEP;
+            min = EQ_Q_MIN;
+            max = EQ_Q_MAX;
+            voice_unit = UNIT_INT;
+            
+            snprintf(buf, sizeof(buf), str(LANG_SYSFONT_EQUALIZER_EDIT_MODE),
+                str(LANG_EQUALIZER_BAND_Q));
+            
+            screens[SCREEN_MAIN].putsxy(2, y, buf);
+        }
+
+        FOR_NB_SCREENS(i) {
+            screens[i].update();
+        }
+        
+        button = get_action(CONTEXT_SETTINGS_EQ,TIMEOUT_BLOCK);
+
+        switch (button) {
+        case ACTION_SETTINGS_DEC:
+        case ACTION_SETTINGS_DECREPEAT:
+            *(setting) -= step;
+            has_changed = true;
+            if (*(setting) < min)
+                *(setting) = min;
+            break;
+
+        case ACTION_SETTINGS_INC:
+        case ACTION_SETTINGS_INCREPEAT:
+            *(setting) += step;
+            has_changed = true;
+            if (*(setting) > max)
+                *(setting) = max;
+            break;
+
+        case ACTION_SETTINGS_INCBIGSTEP:
+            *(setting) += fast_step;
+            has_changed = true;
+            if (*(setting) > max)
+                *(setting) = max;
+            break;
+
+        case ACTION_SETTINGS_DECBIGSTEP:
+            *(setting) -= fast_step;
+            has_changed = true;
+            if (*(setting) < min)
+                *(setting) = min;
+            break;
+
+        case ACTION_STD_PREV:
+        case ACTION_STD_PREVREPEAT:
+            current_band--;
+            if (current_band < 0)
+                current_band = 4; /* wrap around */
+            break;
+
+        case ACTION_STD_NEXT:
+        case ACTION_STD_NEXTREPEAT:
+            current_band++;
+            if (current_band > 4)
+                current_band = 0; /* wrap around */
+            break;
+
+        case ACTION_STD_OK:
+            mode++;
+            if (mode > Q)
+                mode = GAIN; /* wrap around */
+            break;
+
+        case ACTION_STD_CANCEL:
+            exit_request = true;
+            result = false;
+            break;
+
+        default:
+            if(default_event_handler(button) == SYS_USB_CONNECTED) {
+                exit_request = true;
+                result = true;
+            }
+            break;
+        }
+        
+        /* Update the filter if the user changed something */
+        if (has_changed) {
+            dsp_set_eq_coefs(current_band);
+            has_changed = false;
+        }
+    }
+
+    action_signalscreenchange();
+    /* Reset screen settings */
+    FOR_NB_SCREENS(i) {
+        screens[i].setfont(FONT_UI);
+        screens[i].clear_display();
+    }
+    return result;
+}
+
+/* Preset saver.
+ * TODO: Can the settings system be used to do this instead?
+ */
+static bool eq_save_preset(void)
+{
+    int fd, i;
+    char filename[MAX_PATH];
+    int *setting;
+
+    create_numbered_filename(filename, EQS_DIR, "eq", ".cfg", 2
+        IF_CNFN_NUM_(, NULL));
+
+    /* allow user to modify filename */
+    while (true) {
+        if (!kbd_input(filename, sizeof filename)) {
+            fd = creat(filename);
+            if (fd < 0)
+                gui_syncsplash(HZ, true, str(LANG_FAILED));
+            else
+                break;
+        }
+        else {
+            gui_syncsplash(HZ, true, str(LANG_MENU_SETTING_CANCEL));
+            return false;
+        }
+    }
+
+    /* TODO: Should we really do this? */
+    fdprintf(fd, "eq enabled: on\r\n");
+    fdprintf(fd, "eq precut: %d\r\n", global_settings.eq_precut);
+    
+    setting = &global_settings.eq_band0_cutoff;
+    
+    for(i = 0; i < 5; ++i) {
+        fdprintf(fd, "eq band %d cutoff: %d\r\n", i, *setting++);
+        fdprintf(fd, "eq band %d q: %d\r\n", i, *setting++);
+        fdprintf(fd, "eq band %d gain: %d\r\n", i, *setting++);
+    }
+
+    close(fd);
+
+    gui_syncsplash(HZ, true, str(LANG_SETTINGS_SAVED));
+
+    return true;
+}
+
+/* Allows browsing of preset files */
+bool eq_browse_presets(void)
+{
+    return rockbox_browse(EQS_DIR, SHOW_CFG);
+}
+
+
+MENUITEM_FUNCTION(eq_graphical, ID2P(LANG_EQUALIZER_GRAPHICAL),
+					(int(*)(void))eq_menu_graphical, NULL, 
+					bitmap_icons_6x8[Icon_EQ]);
+MENUITEM_FUNCTION(eq_save, ID2P(LANG_EQUALIZER_SAVE),
+					(int(*)(void))eq_save_preset, NULL, NOICON);
+MENUITEM_FUNCTION(eq_browse, ID2P(LANG_EQUALIZER_BROWSE),
+					(int(*)(void))eq_browse_presets, NULL, NOICON);
+
+MAKE_MENU(equalizer_menu, ID2P(LANG_EQUALIZER), NULL, bitmap_icons_6x8[Icon_EQ],
+		&eq_enable, &eq_graphical, &eq_precut, &gain_menu, 
+		&advanced_eq_menu_, &eq_save, &eq_browse);
+
+
+#ifdef HAVE_WM8758
+
+void eq_hw_gain_format(char* buffer, int buffer_size, int value,
+                                    const char* unit)
+{
+    snprintf(buffer, buffer_size, "%d %s", value, unit);
+}
+
+static int band0_callback(int action, const struct menu_item_ex *this_item)
+{
+	(void)this_item;
+	if (action == ACTION_EXIT_MENUITEM)
+	{
+#ifndef SIMULATOR
+    	audiohw_set_equalizer_band(0, global_settings.eq_hw_band0_cutoff, 0,
+                                global_settings.eq_hw_band0_gain);
+#endif
+	}
+	return action;
+}
+static int band1_callback(int action, const struct menu_item_ex *this_item)
+{
+	(void)this_item;
+	if (action == ACTION_EXIT_MENUITEM)
+	{
+#ifndef SIMULATOR
+    	audiohw_set_equalizer_band(1, global_settings.eq_hw_band1_center,
+                                global_settings.eq_hw_band1_bandwidth,
+                                global_settings.eq_hw_band1_gain);
+#endif
+	}
+	return action;
+}
+static int band2_callback(int action, const struct menu_item_ex *this_item)
+{
+	(void)this_item;
+	if (action == ACTION_EXIT_MENUITEM)
+	{
+#ifndef SIMULATOR
+    	audiohw_set_equalizer_band(2, global_settings.eq_hw_band2_center,
+                                global_settings.eq_hw_band2_bandwidth,
+                                global_settings.eq_hw_band2_gain);
+#endif
+	}
+	return action;
+}
+static int band3_callback(int action, const struct menu_item_ex *this_item)
+{
+	(void)this_item;
+	if (action == ACTION_EXIT_MENUITEM)
+	{
+#ifndef SIMULATOR
+    	audiohw_set_equalizer_band(3, global_settings.eq_hw_band3_center,
+                                global_settings.eq_hw_band3_bandwidth,
+                                global_settings.eq_hw_band3_gain);
+#endif
+	}
+	return action;
+}
+static int band4_callback(int action, const struct menu_item_ex *this_item)
+{
+	(void)this_item;
+	if (action == ACTION_EXIT_MENUITEM)
+	{
+#ifndef SIMULATOR
+		audiohw_set_equalizer_band(4, global_settings.eq_hw_band4_cutoff, 0,
+                                global_settings.eq_hw_band4_gain);
+#endif
+	}
+	return action;
+}
+void eq_hw_enable(bool enable)
+{
+#ifdef SIMULATOR
+    (void) enable;
+#else
+    if (enable) {
+        audiohw_set_equalizer_band(0, global_settings.eq_hw_band0_cutoff,
+                                   0, global_settings.eq_hw_band0_gain);
+        audiohw_set_equalizer_band(1, global_settings.eq_hw_band1_center,
+                                   global_settings.eq_hw_band1_bandwidth,
+                                   global_settings.eq_hw_band1_gain);
+        audiohw_set_equalizer_band(2, global_settings.eq_hw_band2_center,
+                                   global_settings.eq_hw_band2_bandwidth,
+                                   global_settings.eq_hw_band2_gain);
+        audiohw_set_equalizer_band(3, global_settings.eq_hw_band3_center,
+                                   global_settings.eq_hw_band3_bandwidth,
+                                   global_settings.eq_hw_band3_gain);
+        audiohw_set_equalizer_band(4, global_settings.eq_hw_band4_cutoff,
+                                   0, global_settings.eq_hw_band4_gain);
+    } else {
+        audiohw_set_equalizer_band(0, global_settings.eq_hw_band0_cutoff, 0, 0);
+        audiohw_set_equalizer_band(1, global_settings.eq_hw_band1_center,
+                                   global_settings.eq_hw_band1_bandwidth, 0);
+        audiohw_set_equalizer_band(2, global_settings.eq_hw_band2_center,
+                                   global_settings.eq_hw_band2_bandwidth, 0);
+        audiohw_set_equalizer_band(3, global_settings.eq_hw_band3_center,
+                                   global_settings.eq_hw_band3_bandwidth, 0);
+        audiohw_set_equalizer_band(4, global_settings.eq_hw_band4_cutoff, 0, 0);
+    }
+#endif
+}
+static int hweq_enable_callback(int action, const struct menu_item_ex *this_item)
+{
+	(void)this_item;
+	if (action == ACTION_EXIT_MENUITEM)
+	{
+		eq_hw_enable(global_settings.eq_hw_enabled);
+	}
+	return action;
+}
+MENUITEM_SETTING(hw_eq_enable, &global_settings.eq_hw_enabled, hweq_enable_callback);
+
+MENUITEM_SETTING(hw_eq_cutoff_0, &global_settings.eq_hw_band0_cutoff, band0_callback);
+MENUITEM_SETTING(hw_eq_gain_0, &global_settings.eq_hw_band0_gain, band0_callback);
+MAKE_MENU(hw_eq_band0, ID2P(LANG_EQUALIZER_BAND_LOW_SHELF), NULL, NOICON, 
+	&hw_eq_cutoff_0, &hw_eq_gain_0);
+
+MENUITEM_SETTING(hw_eq_cutoff_1, &global_settings.eq_hw_band1_center, band1_callback);
+MENUITEM_SETTING(hw_eq_bandwidth_1, &global_settings.eq_hw_band1_bandwidth, band1_callback);
+MENUITEM_SETTING(hw_eq_gain_1, &global_settings.eq_hw_band1_gain, band1_callback);
+MAKE_MENU(hw_eq_band1, "Peak Filter 1", NULL, NOICON, 
+	&hw_eq_cutoff_1, &hw_eq_bandwidth_1, &hw_eq_gain_1);
+
+MENUITEM_SETTING(hw_eq_cutoff_2, &global_settings.eq_hw_band2_center, band2_callback);
+MENUITEM_SETTING(hw_eq_bandwidth_2, &global_settings.eq_hw_band2_bandwidth, band2_callback);
+MENUITEM_SETTING(hw_eq_gain_2, &global_settings.eq_hw_band2_gain, band2_callback);
+MAKE_MENU(hw_eq_band2, "Peak Filter 2", NULL, NOICON, 
+	&hw_eq_cutoff_2, &hw_eq_bandwidth_2, &hw_eq_gain_2);
+
+MENUITEM_SETTING(hw_eq_cutoff_3, &global_settings.eq_hw_band3_center, band3_callback);
+MENUITEM_SETTING(hw_eq_bandwidth_3, &global_settings.eq_hw_band3_bandwidth, band3_callback);
+MENUITEM_SETTING(hw_eq_gain_3, &global_settings.eq_hw_band3_gain, band3_callback);
+MAKE_MENU(hw_eq_band3, "Peak Filter 3", NULL, NOICON, 
+	&hw_eq_cutoff_3, &hw_eq_bandwidth_3, &hw_eq_gain_3);
+
+MENUITEM_SETTING(hw_eq_cutoff_4, &global_settings.eq_hw_band4_cutoff, band4_callback);
+MENUITEM_SETTING(hw_eq_gain_4, &global_settings.eq_hw_band4_gain, band4_callback);
+MAKE_MENU(hw_eq_band4, ID2P(LANG_EQUALIZER_BAND_HIGH_SHELF), NULL, NOICON, 
+	&hw_eq_cutoff_4, &hw_eq_gain_4);
+
+MAKE_MENU(hw_eq_menu, ID2P(LANG_EQUALIZER_HARDWARE), NULL, bitmap_icons_6x8[Icon_EQ],
+	&hw_eq_enable, &hw_eq_band0, &hw_eq_band1, 
+	&hw_eq_band2, &hw_eq_band3, &hw_eq_band4);
+
+
+#endif