path: root/apps/settings.c

/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2002 by wavey@wavey.org
 * RTC config saving code (C) 2002 by hessu@hes.iki.fi
 *
 * 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 <stdio.h>
#include <stddef.h>
#include "config.h"
#include "kernel.h"
#include "thread.h"
#include "settings.h"
#include "disk.h"
#include "panic.h"
#include "debug.h"
#include "button.h"
#include "usb.h"
#include "backlight.h"
#include "lcd.h"
#include "mpeg.h"
#include "mp3_playback.h"
#include "talk.h"
#include "string.h"
#include "ata.h"
#include "fat.h"
#include "power.h"
#include "backlight.h"
#include "powermgmt.h"
#include "status.h"
#include "atoi.h"
#include "screens.h"
#include "ctype.h"
#include "file.h"
#include "errno.h"
#include "system.h"
#include "misc.h"
#include "timefuncs.h"
#ifdef HAVE_LCD_BITMAP
#include "icons.h"
#include "font.h"
#include "peakmeter.h"
#include "hwcompat.h"
#endif
#include "lang.h"
#include "language.h"
#include "wps-display.h"
#include "powermgmt.h"
#include "bookmark.h"
#include "sprintf.h"
#include "keyboard.h"
#include "version.h"
#include "rtc.h"
#ifdef HAVE_MAS3507D
void dac_line_in(bool enable);
#endif
struct user_settings global_settings;
char rockboxdir[] = ROCKBOX_DIR;       /* config/font/data file directory */
char rec_base_directory[] = REC_BASE_DIR;


#define CONFIG_BLOCK_VERSION 11
#define CONFIG_BLOCK_SIZE 512
#define RTC_BLOCK_SIZE 44
#define MARKER 0x7FFFFFFF /* FIXME: to be removed with val2phys/phys2val */

#ifdef HAVE_LCD_BITMAP
#define MAX_LINES 10
#else
#define MAX_LINES 2
#endif

long lasttime = 0;
static unsigned char config_block[CONFIG_BLOCK_SIZE];


/* descriptor for a configuration value */
/* (watch the struct packing and member sizes to keep this small) */
struct bit_entry
{
    /* how many bits within the bitfield (1-32), MSB set if value is signed */
    unsigned char bit_size; /* min 6+1 bit */
    /* how many bytes in the global_settings struct (1,2,4) */
    unsigned char byte_size; /* min 3 bits */
    /* store position in global_settings struct */
    short settings_offset; /* min 9 bit, better 10 */
    /* default value */
    int default_val; /* min 15 bit */ 
    /* variable name in a .cfg file, NULL if not to be saved */
    const char* cfg_name;
    /* set of values, or NULL for a numerical value */
    const char* cfg_val;
};

/********************************************

Config block as saved on the battery-packed RTC user RAM memory block
of 44 bytes, starting at offset 0x14 of the RTC memory space.

offset  abs
0x00    0x14    "Roc"   header signature: 0x52 0x6f 0x63
0x03    0x17    <version byte: 0x0>
0x04    0x18    start of bit-table
...
0x28,0x29 unused, not reachable by set_bits() without disturbing the next 2
0x2A,0x2B <checksum 2 bytes: xor of 0x00-0x29>

Config memory is reset to 0xff and initialized with 'factory defaults' if
a valid header & checksum is not found. Config version number is only
increased when information is _relocated_ or space is _reused_ so that old
versions can read and modify configuration changed by new versions. 
Memory locations not used by a given version should not be
modified unless the header & checksum test fails.

Rest of config block, only saved to disk:
0x2C  start of 2nd bit-table
...
0xB8  (char[20]) WPS file
0xCC  (char[20]) Lang file
0xE0  (char[20]) Font file
0xF4-0xFF  <unused>

*************************************/

/* The persistence of the global_settings members is now controlled by
   the two tables below, rtc_bits and hd_bits. 
   New values can just be added to the end, it will be backwards 
   compatible. If you however change order, bitsize, etc. of existing
   entries, you need to bump CONFIG_BLOCK_VERSION to break compatibility.
*/


/* convenience macro for both size and offset of global_settings member */
#define S_O(val) sizeof(global_settings.val), offsetof(struct user_settings, val)
#define SIGNED 0x80 /* for bitsize value with signed attribute */

/* some sets of values which are used more than once, to save memory */
static const char off_on[] = "off,on";
static const char off_on_ask[] = "off,on,ask";
static const char graphic_numeric[] = "graphic,numeric";

/* the part of the settings which ends up in the RTC RAM, where available 
   (those we either need early, save frequently, or without spinup) */
static struct bit_entry rtc_bits[] = 
{
    /* placeholder, containing the size information */
    {9, 0, 0, 0, NULL, NULL }, /* 9 bit to tell how far this is populated */

    /* # of bits, offset+size, default, .cfg name, .cfg values */
    /* sound */
    {7, S_O(volume), 70, "volume", NULL }, /* 0...100 */
    {7 | SIGNED, S_O(balance), 0, "balance", NULL }, /* -50...50 */
    {5, S_O(bass), 0, "bass", NULL }, /* 0...30 */
    {5, S_O(treble), 0, "treble", NULL }, /* 0...30 */
#ifdef HAVE_MAS3587F
    {5, S_O(loudness), 0, "loudness", NULL }, /* 0...17 */
    {4, S_O(bass_boost), 0, "bass boost", NULL }, /* 0...10 */
    {2, S_O(avc), 0, "auto volume", "off,2,4,8" },
#endif
    {3, S_O(channel_config), 6, "channels", 
        "stereo,stereo narrow,mono,mono left,mono right,karaoke,stereo wide" },
    /* playback */
    {2, S_O(resume), RESUME_ASK, "resume", "off,ask,ask once,on" },
    {1, S_O(playlist_shuffle), false, "shuffle", off_on },
    {16 | SIGNED, S_O(resume_index), -1, NULL, NULL },
    {16 | SIGNED, S_O(resume_first_index), 0, NULL, NULL },
    {32 | SIGNED, S_O(resume_offset), -1, NULL, NULL },
    {32 | SIGNED, S_O(resume_seed), -1, NULL, NULL },
    {2, S_O(repeat_mode), REPEAT_ALL, "repeat", "off,all,one" },
    /* LCD */
    {6, S_O(contrast), 40, "contrast", NULL },
    {1, S_O(backlight_on_when_charging), false, 
        "backlight when plugged", off_on },
    {5, S_O(backlight_timeout), 5, "backlight timeout", 
        "off,on,1,2,3,4,5,6,7,8,9,10,15,20,25,30,45,60,90" },
#ifdef HAVE_LCD_BITMAP
    {1, S_O(invert), false, "invert", off_on },
    {1, S_O(flip_display), false, "flip display", off_on },
    /* display */
    {1, S_O(invert_cursor), false, "invert cursor", off_on },
    {1, S_O(show_icons), true, "show icons", off_on },
    {1, S_O(statusbar), true, "statusbar", off_on },
    {1, S_O(scrollbar), true, "scrollbar", off_on },
    {1, S_O(buttonbar), true, "buttonbar", off_on },
    {1, S_O(volume_type), 0, "volume display", graphic_numeric },
    {1, S_O(battery_type), 0, "battery display", graphic_numeric },
    {1, S_O(timeformat), 0, "time format", "24hour,12hour" },
#endif
    /* system */
    {4, S_O(poweroff), 10, 
        "idle poweroff", "off,1,2,3,4,5,6,7,8,9,10,15,30,45,60" },
    {18, S_O(runtime), 0, NULL, NULL },
    {18, S_O(topruntime), 0, NULL, NULL },
    {15, S_O(max_files_in_playlist), 10000, 
        "max files in playlist", NULL }, /* 1000...20000 */
    {14, S_O(max_files_in_dir), 400, 
        "max files in dir", NULL }, /* 50...10000 */
    /* battery */
#ifdef HAVE_CHARGE_CTRL
    {1, S_O(discharge), 0, "deep discharge", off_on },
    {1, S_O(trickle_charge), true, "trickle charge", off_on },
#endif
#ifdef HAVE_LIION
    {12, S_O(battery_capacity), 2200, "battery capacity", NULL }, /* 1500...3200 */
#else
    {12, S_O(battery_capacity), 1500, "battery capacity", NULL }, /* 1500...3200 */
#endif
    {1, S_O(car_adapter_mode), false, "car adapter mode", off_on },

    /* new stuff to be added here */
    /* If values are just added to the end, no need to bump the version. */

    /* Current sum of bits: 254 (worst case) */
    /* Sum of all bit sizes must not grow beyond 288! */
};


/* the part of the settings which ends up in HD sector only */
static struct bit_entry hd_bits[] = 
{
    /* This table starts after the 44 RTC bytes = 352 bits. */
    /* Here we need 11 bits to tell how far this is populated. */

    /* placeholder, containing the size information */
    {11, 0, 0, 0, NULL, NULL }, /* 11 bit to tell how far this is populated */

    /* # of bits, offset+size, default, .cfg name, .cfg values */
    /* more display */
    {1, S_O(caption_backlight), false, "caption backlight", off_on },
    {4, S_O(scroll_speed), 8, "scroll speed", NULL }, /* 1...10 */
    {7, S_O(scroll_step), 6, "scroll step", NULL }, /* 1...112 */
    {8, S_O(scroll_delay), 100, "scroll delay", NULL }, /* 0...250 */
    {8, S_O(bidir_limit), 50, "bidir limit", NULL }, /* 0...200 */
#ifdef HAVE_LCD_CHARCELLS
    {3, S_O(jump_scroll), 0, "jump scroll", NULL }, /* 0...5 */
    {8, S_O(jump_scroll_delay), 50, "jump scroll delay", NULL }, /* 0...250 */
#endif
    /* more playback */
    {1, S_O(play_selected), true, "play selected", off_on },
    {1, S_O(fade_on_stop), true, "volume fade", off_on },
    {4, S_O(ff_rewind_min_step), 1000, 
        "scan min step", "1,2,3,4,5,6,8,10,15,20,25,30,45,60" },
    {4, S_O(ff_rewind_accel), 3, "scan accel", NULL },
    {3, S_O(buffer_margin), 0, "antiskip", NULL },
    /* disk */
#ifdef HAVE_ATA_POWER_OFF
    {1, S_O(disk_poweroff), false, "disk poweroff", off_on },
#endif
    {8, S_O(disk_spindown), 5, "disk spindown", NULL },
    /* browser */
    {2, S_O(dirfilter), SHOW_MUSIC, 
        "show files", "all,supported,music,playlists" },
    {1, S_O(sort_case), false, "sort case", off_on },
    {1, S_O(browse_current), false, "follow playlist", off_on },
    /* playlist */
    {1, S_O(playlist_viewer_icons), true, "playlist viewer icons", off_on },
    {1, S_O(playlist_viewer_indices), true, 
        "playlist viewer indices", off_on },
    {1, S_O(playlist_viewer_track_display), 0, 
        "playlist viewer track display", "track name,full path" },
    {2, S_O(recursive_dir_insert), RECURSE_OFF, 
        "recursive directory insert", off_on_ask },
    /* bookmarks */
    {3, S_O(autocreatebookmark), BOOKMARK_NO, "autocreate bookmarks", 
        "off,on,ask,recent only - on,recent only - ask" },
    {2, S_O(autoloadbookmark), BOOKMARK_NO,
        "autoload bookmarks", off_on_ask },
    {2, S_O(usemrb), BOOKMARK_NO, 
        "use most-recent-bookmarks", "off,on,unique only" },
#ifdef HAVE_LCD_BITMAP
    /* peak meter */
    {5, S_O(peak_meter_clip_hold), 16, "peak meter clip hold", /* 0...25 */
        "on,1,2,3,4,5,6,7,8,9,10,15,20,25,30,45,60,90,2min,3min,5min,10min,20min,45min,90min" },
    {1, S_O(peak_meter_performance), false, "peak meter busy", off_on },
    {5, S_O(peak_meter_hold), 3, "peak meter hold", 
        "off,200ms,300ms,500ms,1,2,3,4,5,6,7,8,9,10,15,20,30,1min" },
    {7, S_O(peak_meter_release), 8, "peak meter release", NULL }, /* 0...126 */
    {1, S_O(peak_meter_dbfs), true, "peak meter dbfs", NULL },
    {7, S_O(peak_meter_min), 60, "peak meter min", NULL }, /* 0...100 */
    {7, S_O(peak_meter_max), 0, "peak meter max", NULL }, /* 0...100 */
#endif
#ifdef HAVE_MAS3587F
    /* recording */
    {1, S_O(rec_editable), false, "editable recordings", off_on },
    {4, S_O(rec_timesplit), 0, "rec timesplit", /* 0...13 */
        "off,00:05,00:10,00:15,00:30,01:00,02:00,04:00,06:00,08:00,10:00,12:00,18:00,24:00" },
    {1, S_O(rec_channels), 0, "rec channels", "stereo,mono" },
    {4, S_O(rec_mic_gain), 8, "rec mic gain", NULL },
    {3, S_O(rec_quality), 5, "rec quality", NULL },
    {2, S_O(rec_source), 0, /* 0=mic */
        "rec source", "mic,line,spdif" },
    {3, S_O(rec_frequency), 0, /* 0=44.1kHz */
        "rec frequency", "44,48,32,22,24,16" },
    {4, S_O(rec_left_gain), 2, /* 0dB */
        "rec left gain", NULL }, /* 0...15 */
    {4, S_O(rec_right_gain), 2, /* 0dB */
        "rec right gain", NULL }, /* 0...15 */
    {1, S_O(rec_prerecord_time), 0, "prerecording time", NULL }, /* 0...30 */
    {1, S_O(rec_directory), 0, /* rec_base_directory */
        "rec directory", REC_BASE_DIR ",current" },
#endif
#ifdef HAVE_MAS3507D
    {1, S_O(line_in), false, "line in", off_on },
#endif
    /* voice */
    {2, S_O(talk_dir), 0, "talk dir", "off,number,spell,enter,hover" },
    {2, S_O(talk_file), 0, "talk file", "off,number,spell" },
    {1, S_O(talk_menu), true, "talk menu", off_on },

    /* new stuff to be added here */
    /* If values are just added to the end, no need to bump the version. */

    /* Sum of all bit sizes must not grow beyond 0xB8*8 = 1472 */
};


/* helper function to extract n (<=32) bits from an arbitrary position */
static unsigned long get_bits(
    unsigned long* p, /* the start of the bitfield array */
    unsigned int from, /* bit no. to start reading from */
    unsigned int size) /* how many bits to read */
{
    unsigned int bit_index;
    unsigned int bits_to_use;

    unsigned long mask;
    unsigned long result;

    if (size==1)
    {   /* short cut */
        return (p[from/32] & 1<<from%32) != 0;
    }

    result = 0;
    while (size)
    {
        bit_index = from % 32;
        bits_to_use = MIN(32 - bit_index, size);
        mask = 0xFFFFFFFF >> (32 - bits_to_use);
        mask <<= bit_index;

        result <<= bits_to_use; /* from last round */
        result |= (p[from/32] & mask) >> bit_index;

        from += bits_to_use;
        size -= bits_to_use;
    }

    return result;
}

/* helper function to set n (<=32) bits to an arbitrary position */
static void set_bits(
    unsigned long* p, /* the start of the bitfield array */
    unsigned int from, /* bit no. to start writing into */
    unsigned int size, /* how many bits to change */
    unsigned long value) /* content (LSBs will be taken) */
{
    unsigned int end;
    unsigned int word_index, bit_index;
    unsigned int bits_to_use;

    unsigned long mask;

    if (size==1)
    {   /* short cut */
        if (value & 1)
            p[from/32] |= 1<<from%32;
        else
            p[from/32] &= ~(1<<from%32);
        return;
    }

    end = from + size - 1;

    /* write back to front, least to most significant */
    while (size)
    {
        word_index = end / 32;
        bit_index = (end % 32) + 1;
        bits_to_use = MIN(bit_index, size);
        bit_index -= bits_to_use;
        mask = 0xFFFFFFFF >> (32 - bits_to_use);
        mask <<= bit_index;

        p[word_index] = (p[word_index] & ~mask) | (value<<bit_index & mask);

        value >>= bits_to_use;
        size -= bits_to_use;
        end -= bits_to_use;
    }
}

/*
 * Calculates the checksum for the config block and returns it
 */

static unsigned short calculate_config_checksum(unsigned char* buf)
{
    unsigned int i;
    unsigned char cksum[2];
    cksum[0] = cksum[1] = 0;
    
    for (i=0; i < RTC_BLOCK_SIZE - 2; i+=2 ) {
        cksum[0] ^= buf[i];
        cksum[1] ^= buf[i+1];
    }

    return (cksum[0] << 8) | cksum[1];
}

/*
 * initialize the config block buffer
 */
static void init_config_buffer( void )
{
    DEBUGF( "init_config_buffer()\n" );
    
    /* reset to 0xff - all unused */
    memset(config_block, 0xff, CONFIG_BLOCK_SIZE);
    /* insert header */
    config_block[0] = 'R';
    config_block[1] = 'o';
    config_block[2] = 'c';
    config_block[3] = CONFIG_BLOCK_VERSION;
}

/*
 * save the config block buffer to disk or RTC RAM
 */
static int save_config_buffer( void )
{
    unsigned short chksum;
#ifdef HAVE_RTC
    unsigned int i;
#endif

    DEBUGF( "save_config_buffer()\n" );
    
    /* update the checksum in the end of the block before saving */
    chksum = calculate_config_checksum(config_block);
    config_block[ RTC_BLOCK_SIZE - 2 ] = chksum >> 8;
    config_block[ RTC_BLOCK_SIZE - 1 ] = chksum & 0xff;

#ifdef HAVE_RTC    
    /* FIXME: okay, it _would_ be cleaner and faster to implement rtc_write so
       that it would write a number of bytes at a time since the RTC chip
       supports that, but this will have to do for now 8-) */
    for (i=0; i < RTC_BLOCK_SIZE; i++ ) {
        int r = rtc_write(0x14+i, config_block[i]);
        if (r) {
            DEBUGF( "save_config_buffer: rtc_write failed at addr 0x%02x: %d\n",
                    14+i, r );
            return r;
        }
    }

#endif

    if (fat_startsector() != 0)
        ata_delayed_write( 61, config_block);
    else
        return -1;

    return 0;
}

/*
 * load the config block buffer from disk or RTC RAM
 */
static int load_config_buffer( void )
{
    unsigned short chksum;
    bool correct = false;

#ifdef HAVE_RTC
    unsigned int i;
    unsigned char rtc_block[RTC_BLOCK_SIZE];
#endif
    
    DEBUGF( "load_config_buffer()\n" );

    if (fat_startsector() != 0) {
        ata_read_sectors( 61, 1,  config_block);

        /* calculate the checksum, check it and the header */
        chksum = calculate_config_checksum(config_block);
        
        if (config_block[0] == 'R' &&
            config_block[1] == 'o' &&
            config_block[2] == 'c' &&
            config_block[3] == CONFIG_BLOCK_VERSION &&
            (chksum >> 8) == config_block[RTC_BLOCK_SIZE - 2] &&
            (chksum & 0xff) == config_block[RTC_BLOCK_SIZE - 1])
        {
            DEBUGF( "load_config_buffer: header & checksum test ok\n" );
            correct = true;
        }
    }

#ifdef HAVE_RTC    
    if(!correct)
    {
        /* If the disk sector was incorrect, reinit the buffer */
        memset(config_block, 0xff, CONFIG_BLOCK_SIZE);
    }
    /* read rtc block */
    for (i=0; i < RTC_BLOCK_SIZE; i++ )
        rtc_block[i] = rtc_read(0x14+i);

    chksum = calculate_config_checksum(rtc_block);
    
    /* if rtc block is ok, use that */
    if (rtc_block[0] == 'R' &&
        rtc_block[1] == 'o' &&
        rtc_block[2] == 'c' &&
        rtc_block[3] == CONFIG_BLOCK_VERSION &&
        (chksum >> 8) == rtc_block[RTC_BLOCK_SIZE - 2] &&
        (chksum & 0xff) == rtc_block[RTC_BLOCK_SIZE - 1])
    {
        memcpy(config_block, rtc_block, RTC_BLOCK_SIZE);
        correct = true;
    }
#endif
    
    if ( !correct ) {
        /* if checksum is not valid, clear the config buffer */
        DEBUGF( "load_config_buffer: header & checksum test failed\n" );
        init_config_buffer();
        return -1;
    }

    return 0;
}


/* helper to save content of global_settings into a bitfield,
   as described per table */ 
static void save_bit_table(const struct bit_entry* p_table, int count, int bitstart)
{
    unsigned long* p_bitfield = (unsigned long*)config_block; /* 32 bit addr. */
    unsigned long value; /* 32 bit content */
    int i;
    const struct bit_entry* p_run = p_table; /* start after the size info */
    int curr_bit = bitstart + p_table->bit_size;
    count--; /* first is excluded from loop */

    for (i=0; i<count; i++)
    {
        p_run++;
        /* could do a memcpy, but that would be endian-dependent */
        switch(p_run->byte_size)
        {
        case 1:
            value = ((unsigned char*)&global_settings)[p_run->settings_offset];
            break;
        case 2:
            value = ((unsigned short*)&global_settings)[p_run->settings_offset/2];
            break;
        case 4:
            value = ((unsigned int*)&global_settings)[p_run->settings_offset/4];
            break;
        default:
            DEBUGF( "illegal size!" );
            continue;
        }
        set_bits(p_bitfield, curr_bit, p_run->bit_size & 0x3F, value);
        curr_bit += p_run->bit_size & 0x3F;
    }
    set_bits(p_bitfield, bitstart, p_table->bit_size, /* write size */
        curr_bit); /* = position after last element */
}


/*
 * persist all runtime user settings to disk or RTC RAM
 */
int settings_save( void )
{
    int restore[6]; /* recover, FIXME: get rid of this */
    DEBUGF( "settings_save()\n" );

    {
        int elapsed_secs;

        elapsed_secs = (current_tick - lasttime) / HZ;
        global_settings.runtime += elapsed_secs;
        lasttime += (elapsed_secs * HZ);

        if ( global_settings.runtime > global_settings.topruntime )
            global_settings.topruntime = global_settings.runtime;
    }

    /* While the mpeg_val2phys business still exists: ( to be removed) */
    /* temporarily replace the hardware levels with the MMI values */
    restore[SOUND_VOLUME] = global_settings.volume;
    global_settings.volume = mpeg_val2phys(SOUND_VOLUME, global_settings.volume);
    restore[SOUND_BASS] = global_settings.bass;
    global_settings.bass = mpeg_val2phys(SOUND_BASS, global_settings.bass);
    restore[SOUND_TREBLE] = global_settings.treble;
    global_settings.treble = mpeg_val2phys(SOUND_TREBLE, global_settings.treble);
    restore[SOUND_BALANCE] = global_settings.balance;
    global_settings.balance = mpeg_val2phys(SOUND_BALANCE, global_settings.balance);
#ifdef HAVE_MAS3587F
    restore[SOUND_LOUDNESS] = global_settings.loudness;
    global_settings.loudness = mpeg_val2phys(SOUND_LOUDNESS, global_settings.loudness);
    restore[SOUND_SUPERBASS] = global_settings.bass_boost;
    global_settings.bass_boost = mpeg_val2phys(SOUND_SUPERBASS, global_settings.bass_boost);
#endif
    

    /* serialize scalar values into RTC and HD sector, specified via table */
    save_bit_table(rtc_bits, sizeof(rtc_bits)/sizeof(rtc_bits[0]), 4*8);
    save_bit_table(hd_bits, sizeof(hd_bits)/sizeof(hd_bits[0]), RTC_BLOCK_SIZE*8);

    strncpy(&config_block[0xb8], global_settings.wps_file, MAX_FILENAME);
    strncpy(&config_block[0xcc], global_settings.lang_file, MAX_FILENAME);
    strncpy(&config_block[0xe0], global_settings.font_file, MAX_FILENAME);


    /* restore the original values; to be removed with mpeg_val2phys */
    global_settings.volume = restore[SOUND_VOLUME];
    global_settings.bass = restore[SOUND_BASS];
    global_settings.treble = restore[SOUND_TREBLE];
    global_settings.balance = restore[SOUND_BALANCE];
#ifdef HAVE_MAS3587F
    global_settings.loudness = restore[SOUND_LOUDNESS];
    global_settings.bass_boost = restore[SOUND_SUPERBASS];
#endif


    if(save_config_buffer())
    {
        lcd_clear_display();
#ifdef HAVE_LCD_CHARCELLS
        lcd_puts(0, 0, str(LANG_SETTINGS_SAVE_PLAYER));
        lcd_puts(0, 1, str(LANG_SETTINGS_BATTERY_PLAYER));
#else
        lcd_puts(4, 2, str(LANG_SETTINGS_SAVE_RECORDER));
        lcd_puts(2, 4, str(LANG_SETTINGS_BATTERY_RECORDER));
        lcd_update();
#endif
        sleep(HZ*2);
        return -1;
    }
    return 0;
}

#ifdef HAVE_LCD_BITMAP
/**
 * Applies the range infos stored in global_settings to 
 * the peak meter. 
 */
void settings_apply_pm_range(void)
{
    int pm_min, pm_max;

    /* depending on the scale mode (dBfs or percent) the values
       of global_settings.peak_meter_dbfs have different meanings */
    if (global_settings.peak_meter_dbfs) 
    {
        /* convert to dBfs * 100          */
        pm_min = -(((int)global_settings.peak_meter_min) * 100);
        pm_max = -(((int)global_settings.peak_meter_max) * 100);
    }
    else 
    {
        /* percent is stored directly -> no conversion */
        pm_min = global_settings.peak_meter_min;
        pm_max = global_settings.peak_meter_max;
    }

    /* apply the range */
    peak_meter_init_range(global_settings.peak_meter_dbfs, pm_min, pm_max);
}
#endif /* HAVE_LCD_BITMAP */

void settings_apply(void)
{
    char buf[64];

    mpeg_sound_set(SOUND_BASS, global_settings.bass);
    mpeg_sound_set(SOUND_TREBLE, global_settings.treble);
    mpeg_sound_set(SOUND_BALANCE, global_settings.balance);
    mpeg_sound_set(SOUND_VOLUME, global_settings.volume);
    mpeg_sound_set(SOUND_CHANNELS, global_settings.channel_config);
#ifdef HAVE_MAS3587F
    mpeg_sound_set(SOUND_LOUDNESS, global_settings.loudness);
    mpeg_sound_set(SOUND_SUPERBASS, global_settings.bass_boost);
    mpeg_sound_set(SOUND_AVC, global_settings.avc);
#endif

    mpeg_set_buffer_margin(global_settings.buffer_margin);
    
    lcd_set_contrast(global_settings.contrast);
    lcd_scroll_speed(global_settings.scroll_speed);
    backlight_set_timeout(global_settings.backlight_timeout);
    backlight_set_on_when_charging(global_settings.backlight_on_when_charging);
    ata_spindown(global_settings.disk_spindown);
#ifdef HAVE_MAS3507D
    dac_line_in(global_settings.line_in);
#endif
#ifdef HAVE_ATA_POWER_OFF
    ata_poweroff(global_settings.disk_poweroff);
#endif

    set_poweroff_timeout(global_settings.poweroff);
#ifdef HAVE_CHARGE_CTRL
    charge_restart_level = global_settings.discharge ? 
        CHARGE_RESTART_LO : CHARGE_RESTART_HI;
    enable_trickle_charge(global_settings.trickle_charge);
#endif

    set_battery_capacity(global_settings.battery_capacity);

#ifdef HAVE_LCD_BITMAP
    lcd_set_invert_display(global_settings.invert);
    lcd_set_flip(global_settings.flip_display);
    button_set_flip(global_settings.flip_display);
    lcd_update(); /* refresh after flipping the screen */
    settings_apply_pm_range();
    peak_meter_init_times(
        global_settings.peak_meter_release, global_settings.peak_meter_hold, 
        global_settings.peak_meter_clip_hold);
#endif

    if ( global_settings.wps_file[0] && 
         global_settings.wps_file[0] != 0xff ) {
        snprintf(buf, sizeof buf, ROCKBOX_DIR "/%s.wps",
                 global_settings.wps_file);
        wps_load(buf, false);
    }
    else
        wps_reset();

#ifdef HAVE_LCD_BITMAP
    if ( global_settings.font_file[0] &&
         global_settings.font_file[0] != 0xff ) {
        snprintf(buf, sizeof buf, ROCKBOX_DIR FONT_DIR "/%s.fnt",
                 global_settings.font_file);
        font_load(buf);
    }
    else
        font_reset();

    lcd_scroll_step(global_settings.scroll_step);
#else
    lcd_jump_scroll(global_settings.jump_scroll);
    lcd_jump_scroll_delay(global_settings.jump_scroll_delay * (HZ/10));
#endif
    lcd_bidir_scroll(global_settings.bidir_limit);
    lcd_scroll_delay(global_settings.scroll_delay * (HZ/10));

    if ( global_settings.lang_file[0] &&
         global_settings.lang_file[0] != 0xff ) {
        snprintf(buf, sizeof buf, ROCKBOX_DIR LANG_DIR "/%s.lng",
                 global_settings.lang_file);
        lang_load(buf);
        talk_init(); /* use voice of same language */
    }

    set_car_adapter_mode(global_settings.car_adapter_mode);
}


/* helper to load global_settings from a bitfield, as described per table */
static void load_bit_table(const struct bit_entry* p_table, int count, int bitstart)
{
    unsigned long* p_bitfield = (unsigned long*)config_block; /* 32 bit addr. */
    unsigned long value; /* 32 bit content */
    int i;
    int maxbit; /* how many bits are valid in the saved part */
    const struct bit_entry* p_run = p_table; /* start after the size info */
    count--; /* first is excluded from loop */
    maxbit = get_bits(p_bitfield, bitstart, p_table->bit_size);
    bitstart += p_table->bit_size;

    for (i=0; i<count; i++)
    {
        int size;
        p_run++;

        size = p_run->bit_size & 0x3F; /* mask off abused bits */
        if (bitstart + size > maxbit)
            break; /* exit if this is not valid any more in bitfield */

        value = get_bits(p_bitfield, bitstart, size);
        bitstart += size;
        if (p_run->bit_size & SIGNED)
        {   // sign extend the read value
            unsigned long mask = 0xFFFFFFFF << (size - 1);
            if (value & mask) /* true if MSB of value is set */
                value |= mask;
        }

        /* could do a memcpy, but that would be endian-dependent */
        switch(p_run->byte_size)
        {
        case 1:
            ((unsigned char*)&global_settings)[p_run->settings_offset] = 
                (unsigned char)value;
            break;
        case 2:
            ((unsigned short*)&global_settings)[p_run->settings_offset/2] = 
                (unsigned short)value;
            break;
        case 4:
            ((unsigned int*)&global_settings)[p_run->settings_offset/4] = 
                (unsigned int)value;
            break;
        default:
            DEBUGF( "illegal size!" );
            continue;
        }
    }
}


/*
 * load settings from disk or RTC RAM
 */
void settings_load(void)
{
    int restore[6]; /* recover, FIXME: get rid of this */
    
    DEBUGF( "reload_all_settings()\n" );

    /* populate settings with default values */
    settings_reset();
    
    /* load the buffer from the RTC (resets it to all-unused if the block
       is invalid) and decode the settings which are set in the block */
    if (!load_config_buffer()) 
    {
        /* While the mpeg_val2phys business still exists: ( FIXME: to be removed) */
        /* temporarily put markers into the values to detect if they got loaded */
        restore[SOUND_VOLUME] = global_settings.volume;
        global_settings.volume = MARKER;
        restore[SOUND_BASS] = global_settings.bass;
        global_settings.bass = MARKER;
        restore[SOUND_TREBLE] = global_settings.treble;
        global_settings.treble = MARKER;
        restore[SOUND_BALANCE] = global_settings.balance;
        global_settings.balance = MARKER;
#ifdef HAVE_MAS3587F
        restore[SOUND_LOUDNESS] = global_settings.loudness;
        global_settings.loudness = MARKER;
        restore[SOUND_SUPERBASS] = global_settings.bass_boost;
        global_settings.bass_boost = MARKER;
#endif
        
        /* load scalar values from RTC and HD sector, specified via table */
        load_bit_table(rtc_bits, sizeof(rtc_bits)/sizeof(rtc_bits[0]), 4*8);
        load_bit_table(hd_bits, sizeof(hd_bits)/sizeof(hd_bits[0]), RTC_BLOCK_SIZE*8);
        
        /* FIXME, to be removed with mpeg_val2phys: */
        /* if a value got loaded, convert it, else restore it */
        global_settings.volume = (global_settings.volume == MARKER) ? 
            restore[SOUND_VOLUME] : mpeg_phys2val(SOUND_VOLUME, global_settings.volume);
        global_settings.bass = (global_settings.bass == MARKER) ? 
            restore[SOUND_BASS] : mpeg_phys2val(SOUND_BASS, global_settings.bass);
        global_settings.treble = (global_settings.treble == MARKER) ? 
            restore[SOUND_TREBLE] : mpeg_phys2val(SOUND_TREBLE, global_settings.treble);
        global_settings.balance = (global_settings.balance == MARKER) ? 
            restore[SOUND_BALANCE] : mpeg_phys2val(SOUND_BALANCE, global_settings.balance);
#ifdef HAVE_MAS3587F
        global_settings.loudness = (global_settings.loudness == MARKER) ? 
            restore[SOUND_LOUDNESS] : mpeg_phys2val(SOUND_LOUDNESS, global_settings.loudness);
        global_settings.bass_boost = (global_settings.bass_boost == MARKER) ? 
            restore[SOUND_SUPERBASS] : mpeg_phys2val(SOUND_SUPERBASS, global_settings.bass_boost);
#endif

        if ( global_settings.contrast < MIN_CONTRAST_SETTING )
            global_settings.contrast = lcd_default_contrast();

        strncpy(global_settings.wps_file, &config_block[0xb8], MAX_FILENAME);
        strncpy(global_settings.lang_file, &config_block[0xcc], MAX_FILENAME);
        strncpy(global_settings.font_file, &config_block[0xe0], MAX_FILENAME);
   }

    settings_apply();
}

/* parse a line from a configuration file. the line format is: 

   setting name: setting value

   Any whitespace before setting name or value (after ':') is ignored.
   A # as first non-whitespace character discards the whole line.
   Function sets pointers to null-terminated setting name and value.
   Returns false if no valid config entry was found.
*/

static bool settings_parseline(char* line, char** name, char** value)
{
    char* ptr;

    while ( isspace(*line) )
        line++;

    if ( *line == '#' )
        return false;

    ptr = strchr(line, ':');
    if ( !ptr )
        return false;

    *name = line;
    *ptr = 0;
    ptr++;
    while (isspace(*ptr))
        ptr++;
    *value = ptr;
    return true;
}

void set_file(char* filename, char* setting, int maxlen)
{
    char* fptr = strrchr(filename,'/');
    int len;
    int extlen = 0;
    char* ptr;

    if (!fptr)
        return;

    *fptr = 0;
    fptr++;

    len = strlen(fptr);
    ptr = fptr + len;
    while (*ptr != '.') {
        extlen++;
        ptr--;
    }
        
    if (strncmp(ROCKBOX_DIR, filename ,strlen(ROCKBOX_DIR)) ||
        (len-extlen > maxlen))
        return;
        
    strncpy(setting, fptr, len-extlen);
    setting[len-extlen]=0;

    settings_save();
}

/* helper to sort a .cfg file entry into a global_settings member,
   as described per table. Returns the position if found, else 0. */ 
static int load_cfg_table(
    const struct bit_entry* p_table, /* the table which describes the entries */
    int count, /* number of entries in the table, including the first */
    char* name, /* the item to be searched */
    char* value, /* the value which got loaded for that item */
    int hint) /* position to start looking */
{
    int i = hint;

    do
    {
        if (p_table[i].cfg_name != NULL && !strcasecmp(name, p_table[i].cfg_name))
        { /* found */
            int val = 0;
            if (p_table[i].cfg_val == NULL)
            {   /* numerical value, just convert the string */
                val = atoi(value);
            }
            else
            {   /* set of string values, find the index */
                const char* item;
                const char* run;
                int len = strlen(value);
                
                item = run = p_table[i].cfg_val;
                
                while(1)
                {
                    /* count the length of the field */
                    while (*run != ',' && *run != '\0')
                        run++;

                    if (!strncasecmp(value, item, MAX(run-item, len)))
                        break; /* match, exit the search */
                    
                    if (*run == '\0') /* reached the end of the choices */
                        return i; /* return the position, but don't update */

                    val++; /* count the item up */
                    run++; /* behind the ',' */
                    item = run;
                }
            }
        
            /* could do a memcpy, but that would be endian-dependent */
            switch(p_table[i].byte_size)
            {
            case 1:
                ((unsigned char*)&global_settings)[p_table[i].settings_offset] = 
                    (unsigned char)val;
                break;
            case 2:
                ((unsigned short*)&global_settings)[p_table[i].settings_offset/2] = 
                    (unsigned short)val;
                break;
            case 4:
                ((unsigned int*)&global_settings)[p_table[i].settings_offset/4] = 
                    (unsigned int)val;
                break;
            default:
                DEBUGF( "illegal size!" );
                continue;
            }

            return i; /* return the position */
        }

        i++;
        if (i==count)
            i=1; /* wraparound */
    } while (i != hint); /* back where we started, all searched */
    
    return 0; /* indicate not found */
}


bool settings_load_config(char* file)
{
    int fd;
    char line[128];
    int restore[6]; /* recover, FIXME: get rid of this */

    fd = open(file, O_RDONLY);
    if (fd < 0)
        return false;


    /* While the mpeg_val2phys business still exists: ( to be removed) */
    /* temporarily put markers into the values to detect if they got loaded */
    restore[SOUND_VOLUME] = global_settings.volume;
    global_settings.volume = MARKER;
    restore[SOUND_BASS] = global_settings.bass;
    global_settings.bass = MARKER;
    restore[SOUND_TREBLE] = global_settings.treble;
    global_settings.treble = MARKER;
    restore[SOUND_BALANCE] = global_settings.balance;
    global_settings.balance = MARKER;
#ifdef HAVE_MAS3587F
    restore[SOUND_LOUDNESS] = global_settings.loudness;
    global_settings.loudness = MARKER;
    restore[SOUND_SUPERBASS] = global_settings.bass_boost;
    global_settings.bass_boost = MARKER;
#endif
    
    
    while (read_line(fd, line, sizeof line) > 0)
    {
        char* name;
        char* value;
        const struct bit_entry* table[2] = { rtc_bits, hd_bits };
        const int ta_size[2] = { 
            sizeof(rtc_bits)/sizeof(rtc_bits[0]), 
            sizeof(hd_bits)/sizeof(hd_bits[0])
        };
        int last_table = 0; /* which table was used last round */
        int last_pos = 1; /* at which position did we succeed */
        int pos; /* currently returned position */

        if (!settings_parseline(line, &name, &value))
            continue;

        /* check for the string values */
        if (!strcasecmp(name, "wps")) {
            if (wps_load(value,false))
                set_file(value, global_settings.wps_file, MAX_FILENAME);
        }
        else if (!strcasecmp(name, "lang")) {
            if (!lang_load(value))
            {
                set_file(value, global_settings.lang_file, MAX_FILENAME);
                talk_init(); /* use voice of same language */
            }
        }
#ifdef HAVE_LCD_BITMAP
        else if (!strcasecmp(name, "font")) {
            if (font_load(value))
                set_file(value, global_settings.font_file, MAX_FILENAME);
        }
#endif

        /* check for scalar values, using the two tables */
        pos = load_cfg_table(table[last_table], ta_size[last_table], 
            name, value, last_pos);
        if (pos) /* success */
        {
            last_pos = pos; /* remember as a position hint for next round */
            continue;
        }

        last_table = 1-last_table; /* try other table */
        last_pos = 1; /* search from start */
        pos = load_cfg_table(table[last_table], ta_size[last_table],
            name, value, last_pos);
        if (pos) /* success */
        {
            last_pos = pos; /* remember as a position hint for next round */
            continue;
        }
    }

    /* FIXME, to be removed with mpeg_val2phys: */
    /* if a value got loaded, convert it, else restore it */
    global_settings.volume = (global_settings.volume == MARKER) ? 
        restore[SOUND_VOLUME] : mpeg_phys2val(SOUND_VOLUME, global_settings.volume);
    global_settings.bass = (global_settings.bass == MARKER) ? 
        restore[SOUND_BASS] : mpeg_phys2val(SOUND_BASS, global_settings.bass);
    global_settings.treble = (global_settings.treble == MARKER) ? 
        restore[SOUND_TREBLE] : mpeg_phys2val(SOUND_TREBLE, global_settings.treble);
    global_settings.balance = (global_settings.balance == MARKER) ? 
        restore[SOUND_BALANCE] : mpeg_phys2val(SOUND_BALANCE, global_settings.balance);
#ifdef HAVE_MAS3587F
    global_settings.loudness = (global_settings.loudness == MARKER) ? 
        restore[SOUND_LOUDNESS] : mpeg_phys2val(SOUND_LOUDNESS, global_settings.loudness);
    global_settings.bass_boost = (global_settings.bass_boost == MARKER) ? 
        restore[SOUND_SUPERBASS] : mpeg_phys2val(SOUND_SUPERBASS, global_settings.bass_boost);
#endif
    
    close(fd);
    settings_apply();
    settings_save();
    return true;
}


/* helper to save content of global_settings into a file,
   as described per table */ 
static void save_cfg_table(const struct bit_entry* p_table, int count, int fd)
{
    long value; /* 32 bit content */
    int i;
    const struct bit_entry* p_run = p_table; /* start after the size info */
    count--; /* first is excluded from loop */

    for (i=0; i<count; i++)
    {
        p_run++;

        if (p_run->cfg_name == NULL)
            continue; /* this value is not to be saved */

        /* could do a memcpy, but that would be endian-dependent */
        switch(p_run->byte_size)
        {
        case 1:
            if (p_run->bit_size & SIGNED) /* signed? */
                value = ((char*)&global_settings)[p_run->settings_offset];
            else
                value = ((unsigned char*)&global_settings)[p_run->settings_offset];
            break;
        case 2:
            if (p_run->bit_size & SIGNED) /* signed? */
                value = ((short*)&global_settings)[p_run->settings_offset/2];
            else
                value = ((unsigned short*)&global_settings)[p_run->settings_offset/2];
            break;
        case 4:
            value = ((unsigned int*)&global_settings)[p_run->settings_offset/4];
            break;
        default:
            DEBUGF( "illegal size!" );
            continue;
        }
        
        if (p_run->cfg_val == NULL) /* write as number */
        {
            fprintf(fd, "%s: %d\r\n", p_run->cfg_name, value);
        }
        else /* write as item */
        {
            const char* p = p_run->cfg_val;

            fprintf(fd, "%s: ", p_run->cfg_name);
            
            while(value >= 0)
            {
                char c = *p++; /* currently processed char */
                if (c == ',') /* separator */
                    value--;
                else if (c == '\0') /* end of string */
                    break; /* not found */
                else if (value == 0) /* the right place */
                    write(fd, &c, 1); /* char by char, this is lame, OK */
            }

            fprintf(fd, "\r\n");
        }
    }
}


bool settings_save_config(void)
{
    bool done = false;
    int fd, i;
    char filename[MAX_PATH];
    int restore[6]; /* recover, FIXME: get rid of this */

    /* find unused filename */
    for (i=0; ; i++) {
        snprintf(filename, sizeof filename, ROCKBOX_DIR "/config%02d.cfg", i);
        fd = open(filename, O_RDONLY);
        if (fd < 0)
            break;
        close(fd);
    }

    /* allow user to modify filename */
    while (!done) {
        if (!kbd_input(filename, sizeof filename)) {
            fd = creat(filename,0);
            if (fd < 0) {
                lcd_clear_display();
                lcd_puts(0,0,str(LANG_FAILED));
                lcd_update();
                sleep(HZ);
            }
            else
                done = true;
        }
        else
            break;
    }

    /* abort if file couldn't be created */
    if (!done) {
        lcd_clear_display();
        lcd_puts(0,0,str(LANG_RESET_DONE_CANCEL));
        lcd_update();
        sleep(HZ);
        return false;
    }

    fprintf(fd, "# >>> .cfg file created by rockbox %s <<<\r\n", appsversion);
    fprintf(fd, "# >>>    http://rockbox.haxx.se    <<<\r\n#\r\n");
    fprintf(fd, "#\r\n# wps / language / font \r\n#\r\n");

    if (global_settings.wps_file[0] != 0)
        fprintf(fd, "wps: %s/%s.wps\r\n", ROCKBOX_DIR,
                global_settings.wps_file);

    if (global_settings.lang_file[0] != 0)
        fprintf(fd, "lang: %s/%s.lng\r\n", ROCKBOX_DIR LANG_DIR, 
                global_settings.lang_file);

#ifdef HAVE_LCD_BITMAP
    if (global_settings.font_file[0] != 0)
        fprintf(fd, "font: %s/%s.fnt\r\n", ROCKBOX_DIR FONT_DIR,
                global_settings.font_file);
#endif

    /* FIXME: While the mpeg_val2phys business still exists: ( to be removed) */
    /* temporarily replace the hardware levels with the MMI values */
    restore[SOUND_VOLUME] = global_settings.volume;
    global_settings.volume = mpeg_val2phys(SOUND_VOLUME, global_settings.volume);
    restore[SOUND_BASS] = global_settings.bass;
    global_settings.bass = mpeg_val2phys(SOUND_BASS, global_settings.bass);
    restore[SOUND_TREBLE] = global_settings.treble;
    global_settings.treble = mpeg_val2phys(SOUND_TREBLE, global_settings.treble);
    restore[SOUND_BALANCE] = global_settings.balance;
    global_settings.balance = mpeg_val2phys(SOUND_BALANCE, global_settings.balance);
#ifdef HAVE_MAS3587F
    restore[SOUND_LOUDNESS] = global_settings.loudness;
    global_settings.loudness = mpeg_val2phys(SOUND_LOUDNESS, global_settings.loudness);
    restore[SOUND_SUPERBASS] = global_settings.bass_boost;
    global_settings.bass_boost = mpeg_val2phys(SOUND_SUPERBASS, global_settings.bass_boost);
#endif
    
    /* here's the action: write values to file, specified via table */
    save_cfg_table(rtc_bits, sizeof(rtc_bits)/sizeof(rtc_bits[0]), fd);
    save_cfg_table(hd_bits, sizeof(hd_bits)/sizeof(hd_bits[0]), fd);

    /* FIXME to be removed with mpeg_val2phys: restore the original values */
    global_settings.volume = restore[SOUND_VOLUME];
    global_settings.bass = restore[SOUND_BASS];
    global_settings.treble = restore[SOUND_TREBLE];
    global_settings.balance = restore[SOUND_BALANCE];
#ifdef HAVE_MAS3587F
    global_settings.loudness = restore[SOUND_LOUDNESS];
    global_settings.bass_boost = restore[SOUND_SUPERBASS];
#endif

    close(fd);

    lcd_clear_display();
    lcd_puts(0,0,str(LANG_SETTINGS_SAVED1));
    lcd_puts(0,1,str(LANG_SETTINGS_SAVED2));
    lcd_update();
    sleep(HZ);
    return true;
}


/* helper to load defaults from table into global_settings members */
static void default_table(const struct bit_entry* p_table, int count)
{
    int i;

    for (i=1; i<count; i++) /* exclude the first, the size placeholder */
    {
        /* could do a memcpy, but that would be endian-dependent */
        switch(p_table[i].byte_size)
        {
        case 1:
            ((unsigned char*)&global_settings)[p_table[i].settings_offset] = 
                (unsigned char)p_table[i].default_val;
            break;
        case 2:
            ((unsigned short*)&global_settings)[p_table[i].settings_offset/2] = 
                (unsigned short)p_table[i].default_val;
            break;
        case 4:
            ((unsigned int*)&global_settings)[p_table[i].settings_offset/4] = 
                (unsigned int)p_table[i].default_val;
            break;
        default:
            DEBUGF( "illegal size!" );
            continue;
        }
    }
}


/*
 * reset all settings to their default value 
 */
void settings_reset(void) {
        
    DEBUGF( "settings_reset()\n" );

    /* read defaults from table(s) into global_settings */
    default_table(rtc_bits, sizeof(rtc_bits)/sizeof(rtc_bits[0]));
    default_table(hd_bits, sizeof(hd_bits)/sizeof(hd_bits[0]));

    /* do some special cases not covered by table */
    global_settings.volume      = mpeg_sound_default(SOUND_VOLUME);
    global_settings.balance     = mpeg_sound_default(SOUND_BALANCE);
    global_settings.bass        = mpeg_sound_default(SOUND_BASS);
    global_settings.treble      = mpeg_sound_default(SOUND_TREBLE);
    global_settings.loudness    = mpeg_sound_default(SOUND_LOUDNESS);
    global_settings.bass_boost  = mpeg_sound_default(SOUND_SUPERBASS);
    global_settings.avc         = mpeg_sound_default(SOUND_AVC);
    global_settings.channel_config = mpeg_sound_default(SOUND_CHANNELS);
    global_settings.contrast    = lcd_default_contrast();
    global_settings.wps_file[0] = '\0';
    global_settings.font_file[0] = '\0';
    global_settings.lang_file[0] = '\0';

}

bool set_bool(char* string, bool* variable )
{
    return set_bool_options(string, variable, 
        STR(LANG_SET_BOOL_YES), 
        STR(LANG_SET_BOOL_NO), 
        NULL);
}

/* wrapper to convert from int param to bool param in set_option */
static void (*boolfunction)(bool);
void bool_funcwrapper(int value)
{
    if (value)
        boolfunction(true);
    else
        boolfunction(false);
}

bool set_bool_options(char* string, bool* variable,
                      char* yes_str, int yes_voice,
                      char* no_str, int no_voice,
                      void (*function)(bool))
{
    struct opt_items names[] = { {no_str, no_voice}, {yes_str, yes_voice} };
    bool result;

    boolfunction = function;
    result = set_option(string, variable, BOOL, names, 2, 
                        function ? bool_funcwrapper : NULL);
    return result;
}

bool set_int(char* string, 
             char* unit,
             int voice_unit,
             int* variable,
             void (*function)(int),
             int step,
             int min,
             int max )
{
    bool done = false;
    int button;
    int org_value=*variable;
    int last_value = 0x7FFFFFFF; /* out of range init */

#ifdef HAVE_LCD_BITMAP
    if(global_settings.statusbar)
        lcd_setmargins(0, STATUSBAR_HEIGHT);
    else
        lcd_setmargins(0, 0);
#endif

    lcd_clear_display();
    lcd_puts_scroll(0, 0, string);

    while (!done) {
        char str[32];
        snprintf(str,sizeof str,"%d %s  ", *variable, unit);
        lcd_puts(0, 1, str);
#ifdef HAVE_LCD_BITMAP
        status_draw(true);
#endif
        lcd_update();

        if (global_settings.talk_menu && *variable != last_value)
        {
            if (voice_unit < UNIT_LAST)
            {   /* use the available unit definition */
                talk_value(*variable, voice_unit, false);
            }
            else
            {   /* say the number, followed by an arbitrary voice ID */
                talk_number(*variable, false);
                talk_id(voice_unit, true);
            }
            last_value = *variable;
        }

        button = button_get_w_tmo(HZ/2);
        switch(button) {
#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_UP:
            case BUTTON_UP | BUTTON_REPEAT:
#else
            case BUTTON_RIGHT:
            case BUTTON_RIGHT | BUTTON_REPEAT:
#endif
                *variable += step;
                break;

#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_DOWN:
            case BUTTON_DOWN | BUTTON_REPEAT:
#else
            case BUTTON_LEFT:
            case BUTTON_LEFT | BUTTON_REPEAT:
#endif
                *variable -= step;
                break;

#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_LEFT:
            case BUTTON_PLAY:
#else
            case BUTTON_PLAY:
#endif
                done = true;
                break;

#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_OFF:
#else
            case BUTTON_STOP:
            case BUTTON_MENU:
#endif
                if (*variable != org_value) {
                    *variable=org_value;
                    lcd_stop_scroll();
                    lcd_puts(0, 0, str(LANG_MENU_SETTING_CANCEL));
                    lcd_update();
                    sleep(HZ/2);
                }
                done = true;
                break;

            case SYS_USB_CONNECTED:
                usb_screen();
                return true;

        }
        if(*variable > max )
            *variable = max;

        if(*variable < min )
            *variable = min;

        if ( function && button != BUTTON_NONE)
            function(*variable);
    }
    lcd_stop_scroll();

    return false;
}

/* NOTE: the 'type' parameter specifies the actual type of the variable
   that 'variable' points to. not the value within. Only variables with
   type 'bool' should use parameter BOOL.

   The type separation is necessary since int and bool are fundamentally
   different and bit-incompatible types and can not share the same access
   code. */

bool set_option(char* string, void* variable, enum optiontype type,
                struct opt_items* options, int numoptions, void (*function)(int))
{
    bool done = false;
    int button;
    int* intvar = (int*)variable;
    bool* boolvar = (bool*)variable;
    int oldval = 0;
    int index, oldindex = -1; /* remember what we said */

    if (type==INT)
        oldval=*intvar;
    else
        oldval=*boolvar;

#ifdef HAVE_LCD_BITMAP
    if(global_settings.statusbar)
        lcd_setmargins(0, STATUSBAR_HEIGHT);
    else
        lcd_setmargins(0, 0);
#endif

    lcd_clear_display();
    lcd_puts_scroll(0, 0, string);

    while ( !done ) {
        index = type==INT ? *intvar : (int)*boolvar;
        lcd_puts(0, 1, options[index].string);
        if (global_settings.talk_menu && index != oldindex)
        {
            talk_id(options[index].voice_id, false);
            oldindex = index;
        }
#ifdef HAVE_LCD_BITMAP
        status_draw(true);
#endif
        lcd_update();

        button = button_get_w_tmo(HZ/2);
        switch (button) {
#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_UP:
            case BUTTON_UP | BUTTON_REPEAT:
#else
            case BUTTON_RIGHT:
            case BUTTON_RIGHT | BUTTON_REPEAT:
#endif
                if (type == INT) {
                    if ( *intvar < (numoptions-1) )
                        (*intvar)++;
                    else
                        (*intvar) -= (numoptions-1);
                }
                else
                    *boolvar = !*boolvar;
                break;

#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_DOWN:
            case BUTTON_DOWN | BUTTON_REPEAT:
#else
            case BUTTON_LEFT:
            case BUTTON_LEFT | BUTTON_REPEAT:
#endif
                if (type == INT) {
                    if ( *intvar > 0 )
                        (*intvar)--;
                    else
                        (*intvar) += (numoptions-1);
                }
                else
                    *boolvar = !*boolvar;
                break;

#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_LEFT:
            case BUTTON_PLAY:
#else
            case BUTTON_PLAY:
#endif
                done = true;
                break;

#ifdef HAVE_RECORDER_KEYPAD
            case BUTTON_OFF:
#else
            case BUTTON_STOP:
            case BUTTON_MENU:
#endif
                if (((type==INT) && (*intvar != oldval)) ||
                    ((type==BOOL) && (*boolvar != (bool)oldval))) {
                    if (type==INT)
                        *intvar=oldval;
                    else
                        *boolvar=oldval;
                    lcd_stop_scroll();
                    lcd_puts(0, 0, str(LANG_MENU_SETTING_CANCEL));
                    lcd_update();
                    sleep(HZ/2);
                }
                done = true;
                break;

            case SYS_USB_CONNECTED:
                usb_screen();
                return true;
        }

        if ( function && button != BUTTON_NONE) {
            if (type == INT)
                function(*intvar);
            else
                function(*boolvar);
        }
    }
    lcd_stop_scroll();
    return false;
}

#ifdef HAVE_MAS3587F
/* This array holds the record timer interval lengths, in seconds */
static unsigned long rec_timer_seconds[] =
{
    24*60*60, /* OFF really means 24 hours, to avoid >2Gbyte files */
    5*60,     /* 00:05 */
    10*60,    /* 00:10 */
    15*60,    /* 00:15 */
    30*60,    /* 00:30 */
    60*60,    /* 01:00 */
    2*60*60,  /* 02:00 */
    4*60*60,  /* 04:00 */
    6*60*60,  /* 06:00 */
    8*60*60,  /* 08:00 */
    10*60*60, /* 10:00 */
    12*60*60, /* 12:00 */
    18*60*60, /* 18:00 */
    24*60*60  /* 24:00 */
};

unsigned int rec_timesplit_seconds(void)
{
    return rec_timer_seconds[global_settings.rec_timesplit];
}
#endif