settings.c

编译后直接运行的ＭＰ３播放器全部Ｃ语言源代码 一个包含FAT文件系统、系统引导 Boot、FLASH Driver等内容的

    config_block[0x1b] = (unsigned char)
        (((global_settings.browse_current & 1)) |
         ((global_settings.play_selected & 1) << 1) |
         ((global_settings.recursive_dir_insert & 3) << 2));
    
    config_block[0x1c] = (unsigned char)global_settings.peak_meter_hold |
        (global_settings.flip_display ? 0x40 : 0) |
        (global_settings.rec_editable?0x80:0);

    memcpy(&config_block[0x1d], &global_settings.resume_seed, 4);

    config_block[0x21] = (unsigned char)
        ((global_settings.repeat_mode & 3) |
         ((global_settings.rec_channels & 1) << 2) |
         ((global_settings.rec_mic_gain & 0x0f) << 4));
    config_block[0x22] = (unsigned char)
        ((global_settings.rec_quality & 7) |
         ((global_settings.rec_source & 3) << 3) |
         ((global_settings.rec_frequency & 7) << 5));
    config_block[0x23] = (unsigned char)global_settings.rec_left_gain;
    config_block[0x24] = (unsigned char)global_settings.rec_right_gain;
    config_block[0x25] = (unsigned char)
        ((global_settings.disk_poweroff & 1) |
         ((global_settings.buffer_margin & 7) << 1) |
         ((global_settings.trickle_charge & 1) << 4));

    {
        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;

        config_block[0x26]=(unsigned char)(global_settings.runtime & 0xff);
        config_block[0x27]=(unsigned char)(global_settings.runtime >> 8);
        config_block[0x28]=(unsigned char)(global_settings.topruntime & 0xff);
        config_block[0x29]=(unsigned char)(global_settings.topruntime >> 8);
    }
    
#ifdef HAVE_LCD_CHARCELLS
    config_block[0xa8]=(unsigned char)global_settings.jump_scroll;
    config_block[0xa9]=(unsigned char)global_settings.jump_scroll_delay;
#endif
    config_block[0xaa] = (unsigned char)
        global_settings.max_files_in_playlist & 0xff;
    config_block[0xab] = (unsigned char)
        (global_settings.max_files_in_playlist >> 8) & 0xff;
    config_block[0xac] = (unsigned char)
        global_settings.max_files_in_dir & 0xff;
    config_block[0xad] = (unsigned char)
        (global_settings.max_files_in_dir >> 8) & 0xff;
    config_block[0xae] = (unsigned char)
        ((global_settings.fade_on_stop & 1) |
         ((global_settings.caption_backlight & 1) << 1) |
         ((global_settings.car_adapter_mode  & 1) << 2) |
         ((global_settings.line_in & 1) << 3) |
         ((global_settings.playlist_viewer_icons & 1) << 4) |
         ((global_settings.playlist_viewer_indices & 1) << 5) |
         ((global_settings.playlist_viewer_track_display & 1) << 6));
    config_block[0xaf] = ((global_settings.usemrb << 5) |
                          (global_settings.autocreatebookmark << 2) |
                          (global_settings.autoloadbookmark));
    config_block[0xb0] = (unsigned char)global_settings.peak_meter_clip_hold |
        (global_settings.peak_meter_performance ? 0x80 : 0);
    config_block[0xb1] = global_settings.peak_meter_release |
        (global_settings.peak_meter_dbfs ? 0x80 : 0);
    config_block[0xb2] = (unsigned char)global_settings.peak_meter_min;
    config_block[0xb3] = (unsigned char)global_settings.peak_meter_max;

    config_block[0xb4]=(global_settings.battery_capacity - 1000) / 50;
    config_block[0xb5]=(unsigned char)global_settings.scroll_step;
    config_block[0xb6]=(unsigned char)global_settings.scroll_delay;
    config_block[0xb7]=(unsigned char)global_settings.bidir_limit;

    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);

    config_block[0xf4]=((unsigned char)global_settings.rec_prerecord_time |
                        ((unsigned char)global_settings.rec_directory << 5));

    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);
    }

    set_car_adapter_mode(global_settings.car_adapter_mode);
}

/*
 * load settings from disk or RTC RAM
 */
void settings_load(void)
{
    
    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()) {
        if (config_block[0x4] != 0xFF)
            global_settings.volume = config_block[0x4];
        if (config_block[0x5] != 0xFF)
            global_settings.balance = (char)config_block[0x5];
        if (config_block[0x6] != 0xFF)
            global_settings.bass = config_block[0x6];
        if (config_block[0x7] != 0xFF)
            global_settings.treble = config_block[0x7];
        if (config_block[0x8] != 0xFF)
            global_settings.loudness = config_block[0x8];
        if (config_block[0x9] != 0xFF)
            global_settings.bass_boost = config_block[0x9];
    
        if (config_block[0xa] != 0xFF) {
            global_settings.contrast = config_block[0xa] & 0x3f;
            global_settings.invert =
                config_block[0xa] & 0x40 ? true : false;
            if ( global_settings.contrast < MIN_CONTRAST_SETTING )
                global_settings.contrast = lcd_default_contrast();
            global_settings.show_icons =
                config_block[0xa] & 0x80 ? true : false;
        }

        if (config_block[0xb] != 0xFF) {
            /* Bit 7 is unused to be able to detect uninitialized entry */
            global_settings.backlight_timeout = config_block[0xb] & 0x1f;
            global_settings.invert_cursor =
                config_block[0xb] & 0x20 ? true : false;
            global_settings.backlight_on_when_charging =
                config_block[0xb] & 0x40 ? true : false;
        }

        if (config_block[0xc] != 0xFF)
            global_settings.poweroff = config_block[0xc];
        if (config_block[0xd] != 0xFF)
            global_settings.resume = config_block[0xd];
        if (config_block[0xe] != 0xFF) {
            global_settings.playlist_shuffle = config_block[0xe] & 1;
            global_settings.dirfilter = (config_block[0xe] >> 1) & 1;
            global_settings.sort_case = (config_block[0xe] >> 2) & 1;
            global_settings.discharge = (config_block[0xe] >> 3) & 1;
            global_settings.statusbar = (config_block[0xe] >> 4) & 1;
            global_settings.dirfilter |= ((config_block[0xe] >> 5) & 1) << 1;
            global_settings.scrollbar = (config_block[0xe] >> 6) & 1;
            /* Don't use the last bit, it must be unused to detect
               an uninitialized entry */
        }
        
        if (config_block[0xf] != 0xFF) {
            global_settings.volume_type = config_block[0xf] & 1;
            global_settings.battery_type = (config_block[0xf] >> 1) & 1;
            global_settings.timeformat  = (config_block[0xf] >> 2) & 1;
            global_settings.scroll_speed = config_block[0xf] >> 3;
        }

        if (config_block[0x10] != 0xFF) {
            global_settings.ff_rewind_min_step = (config_block[0x10] >> 4) & 15;
            global_settings.ff_rewind_accel = config_block[0x10] & 15;
        }

        if (config_block[0x11] != 0xFF)
        {
            global_settings.avc = config_block[0x11] & 0x03;
            global_settings.channel_config = (config_block[0x11] >> 2) & 0x07;
        }

        if (config_block[0x12] != 0xFF)
            global_settings.resume_index = *((short*)(&config_block[0x12]));

        if (config_block[0x14] != 0xFF)
            global_settings.resume_first_index= *((short*)(&config_block[0x14]));

        if (config_block[0x16] != 0xFF)
            memcpy(&global_settings.resume_offset, &config_block[0x16], 4);

        if (config_block[0x1a] != 0xFF)
            global_settings.disk_spindown = config_block[0x1a];

        if (config_block[0x1b] != 0xFF) {
            global_settings.browse_current = (config_block[0x1b]) & 1;
            global_settings.play_selected = (config_block[0x1b] >> 1) & 1;
            global_settings.recursive_dir_insert =
                (config_block[0x1b] >> 2) & 3;
        }

        if (config_block[0x1c] != 0xFF) {
            global_settings.peak_meter_hold = (config_block[0x1c]) & 0x1f;
            global_settings.flip_display =
                (config_block[0x1c] & 0x40)?true:false;
            global_settings.rec_editable =
                (config_block[0x1c] & 0x80)?true:false;
        }

        if (config_block[0x1d] != 0xFF)
            memcpy(&global_settings.resume_seed, &config_block[0x1d], 4);

        if (config_block[0x21] != 0xFF)
        {
            global_settings.repeat_mode = config_block[0x21] & 3;
            global_settings.rec_channels = (config_block[0x21] >> 2) & 1;
            global_settings.rec_mic_gain = (config_block[0x21] >> 4) & 0x0f;
        }

        if (config_block[0x22] != 0xFF)
        {
            global_settings.rec_quality = config_block[0x22] & 7;
            global_settings.rec_source = (config_block[0x22] >> 3) & 3;
            global_settings.rec_frequency = (config_block[0x22] >> 5) & 7;
        }

        if (config_block[0x23] != 0xFF)
            global_settings.rec_left_gain = config_block[0x23] & 0x0f;

        if (config_block[0x24] != 0xFF)
            global_settings.rec_right_gain = config_block[0x24] & 0x0f;

        if (config_block[0x25] != 0xFF)
        {
            global_settings.disk_poweroff = config_block[0x25] & 1;
            global_settings.buffer_margin = (config_block[0x25] >> 1) & 7;
            global_settings.trickle_charge = (config_block[0x25] >> 4) & 1;
        }

        if (config_block[0x27] != 0xff)
            global_settings.runtime = 
                config_block[0x26] | (config_block[0x27] << 8);

        if (config_block[0x29] != 0xff)
            global_settings.topruntime =
                config_block[0x28] | (config_block[0x29] << 8);

        if (config_block[0xae] != 0xff) {
            global_settings.fade_on_stop = config_block[0xae] & 1;
            global_settings.caption_backlight = (config_block[0xae] >> 1) & 1;
            global_settings.car_adapter_mode  = (config_block[0xae] >> 2) & 1;
            global_settings.line_in = (config_block[0xae] >> 3) & 1;
            global_settings.playlist_viewer_icons =
                (config_block[0xae] >> 4) & 1;