apps/misc.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 by Daniel Stenberg
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #include <stdlib.h>
  22 #include <ctype.h>
  23 #include <stdio.h>
  24 #include <stdarg.h>
  25 #include <errno.h>
  26 #include "string-extra.h"
  27 #include "config.h"
  28 #include "misc.h"
  29 #include "system.h"
  30 #include "lcd.h"
  31 #include "file.h"
  32 #include "filefuncs.h"
  33 #ifndef __PCTOOL__
  34 #include "lang.h"
  35 #include "dir.h"
  36 #include "lcd-remote.h"
  37 #include "system.h"
  38 #include "timefuncs.h"
  39 #include "screens.h"
  40 #include "usb_screen.h"
  41 #include "talk.h"
  42 #include "audio.h"
  43 #include "mp3_playback.h"
  44 #include "settings.h"
  45 #include "storage.h"
  46 #include "ata_idle_notify.h"
  47 #include "kernel.h"
  48 #include "power.h"
  49 #include "powermgmt.h"
  50 #include "backlight.h"
  51 #include "version.h"
  52 #include "font.h"
  53 #include "splash.h"
  54 #include "tagcache.h"
  55 #include "scrobbler.h"
  56 #include "sound.h"
  57 #include "playlist.h"
  58 #include "yesno.h"
  59 #include "viewport.h"
  60
  61 #include "debug.h"
  62
  63 #if CONFIG_TUNER
  64 #include "radio.h"
  65 #endif
  66
  67 #ifdef IPOD_ACCESSORY_PROTOCOL
  68 #include "iap.h"
  69 #endif
  70
  71 #if (CONFIG_STORAGE & STORAGE_MMC)
  72 #include "ata_mmc.h"
  73 #endif
  74 #include "tree.h"
  75 #include "eeprom_settings.h"
  76 #if defined(HAVE_RECORDING) && !defined(__PCTOOL__)
  77 #include "recording.h"
  78 #endif
  79 #if defined(HAVE_LCD_BITMAP) && !defined(__PCTOOL__)
  80 #include "bmp.h"
  81 #include "icons.h"
  82 #endif /* End HAVE_LCD_BITMAP */
  83 #include "bookmark.h"
  84 #include "wps.h"
  85 #include "playback.h"
  86 #if CONFIG_CODEC == SWCODEC
  87 #include "voice_thread.h"
  88 #endif
  89
  90 #ifdef BOOTFILE
  91 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF) \
  92         || defined(HAVE_HOTSWAP_STORAGE_AS_MAIN)
  93 #include "rolo.h"
  94 #endif
  95 #endif
  96
  97 /* units used with output_dyn_value */
  98 const unsigned char * const byte_units[] =
  99 {
 100     ID2P(LANG_BYTE),
 101     ID2P(LANG_KILOBYTE),
 102     ID2P(LANG_MEGABYTE),
 103     ID2P(LANG_GIGABYTE)
 104 };
 105
 106 const unsigned char * const * const kbyte_units = &byte_units[1];
 107
 108 /* Format a large-range value for output, using the appropriate unit so that
 109  * the displayed value is in the range 1 <= display < 1000 (1024 for "binary"
 110  * units) if possible, and 3 significant digits are shown. If a buffer is
 111  * given, the result is snprintf()'d into that buffer, otherwise the result is
 112  * voiced.*/
 113 char *output_dyn_value(char *buf, int buf_size, int value,
 114                        const unsigned char * const *units, bool bin_scale)
 115 {
 116     int scale = bin_scale ? 1024 : 1000;
 117     int fraction = 0;
 118     int unit_no = 0;
 119     char tbuf[5];
 120
 121     while (value >= scale)
 122     {
 123         fraction = value % scale;
 124         value /= scale;
 125         unit_no++;
 126     }
 127     if (bin_scale)
 128         fraction = fraction * 1000 / 1024;
 129
 130     if (value >= 100 || !unit_no)
 131         tbuf[0] = '\0';
 132     else if (value >= 10)
 133         snprintf(tbuf, sizeof(tbuf), "%01d", fraction / 100);
 134     else
 135         snprintf(tbuf, sizeof(tbuf), "%02d", fraction / 10);
 136
 137     if (buf)
 138     {
 139         if (*tbuf)
 140             snprintf(buf, buf_size, "%d%s%s%s", value, str(LANG_POINT),
 141                      tbuf, P2STR(units[unit_no]));
 142         else
 143             snprintf(buf, buf_size, "%d%s", value, P2STR(units[unit_no]));
 144     }
 145     else
 146     {
 147         talk_fractional(tbuf, value, P2ID(units[unit_no]));
 148     }
 149     return buf;
 150 }
 151
 152 /* Ask the user if they really want to erase the current dynamic playlist
 153  * returns true if the playlist should be replaced */
 154 bool warn_on_pl_erase(void)
 155 {
 156     if (global_settings.warnon_erase_dynplaylist &&
 157         !global_settings.party_mode &&
 158         playlist_modified(NULL))
 159     {
 160         static const char *lines[] =
 161             {ID2P(LANG_WARN_ERASEDYNPLAYLIST_PROMPT)};
 162         static const struct text_message message={lines, 1};
 163
 164         return (gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES);
 165     }
 166     else
 167         return true;
 168 }
 169
 170
 171 /* Performance optimized version of the read_line() (see below) function. */
 172 int fast_readline(int fd, char *buf, int buf_size, void *parameters,
 173                   int (*callback)(int n, const char *buf, void *parameters))
 174 {
 175     char *p, *next;
 176     int rc, pos = 0;
 177     int count = 0;
 178
 179     while ( 1 )
 180     {
 181         next = NULL;
 182
 183         rc = read(fd, &buf[pos], buf_size - pos - 1);
 184         if (rc >= 0)
 185             buf[pos+rc] = '\0';
 186
 187         if ( (p = strchr(buf, '\r')) != NULL)
 188         {
 189             *p = '\0';
 190             next = ++p;
 191         }
 192         else
 193             p = buf;
 194
 195         if ( (p = strchr(p, '\n')) != NULL)
 196         {
 197             *p = '\0';
 198             next = ++p;
 199         }
 200
 201         rc = callback(count, buf, parameters);
 202         if (rc < 0)
 203             return rc;
 204
 205         count++;
 206         if (next)
 207         {
 208             pos = buf_size - ((long)next - (long)buf) - 1;
 209             memmove(buf, next, pos);
 210         }
 211         else
 212             break ;
 213     }
 214
 215     return 0;
 216 }
 217
 218 /* parse a line from a configuration file. the line format is:
 219
 220    name: value
 221
 222    Any whitespace before setting name or value (after ':') is ignored.
 223    A # as first non-whitespace character discards the whole line.
 224    Function sets pointers to null-terminated setting name and value.
 225    Returns false if no valid config entry was found.
 226 */
 227
 228 bool settings_parseline(char* line, char** name, char** value)
 229 {
 230     char* ptr;
 231
 232     line = skip_whitespace(line);
 233
 234     if ( *line == '#' )
 235         return false;
 236
 237     ptr = strchr(line, ':');
 238     if ( !ptr )
 239         return false;
 240
 241     *name = line;
 242     *ptr = 0;
 243     ptr++;
 244     ptr = skip_whitespace(ptr);
 245     *value = ptr;
 246     return true;
 247 }
 248
 249 static void system_flush(void)
 250 {
 251     scrobbler_shutdown();
 252     playlist_shutdown();
 253     tree_flush();
 254     call_storage_idle_notifys(true); /*doesnt work on usb and shutdown from ata thread */
 255 }
 256
 257 static void system_restore(void)
 258 {
 259     tree_restore();
 260     scrobbler_init();
 261 }
 262
 263 static bool clean_shutdown(void (*callback)(void *), void *parameter)
 264 {
 265     long msg_id = -1;
 266     int i;
 267
 268     scrobbler_poweroff();
 269
 270 #if CONFIG_CHARGING && !defined(HAVE_POWEROFF_WHILE_CHARGING)
 271     if(!charger_inserted())
 272 #endif
 273     {
 274         bool batt_safe = battery_level_safe();
 275         int audio_stat = audio_status();
 276
 277         FOR_NB_SCREENS(i)
 278         {
 279             screens[i].clear_display();
 280             screens[i].update();
 281         }
 282
 283         if (batt_safe)
 284         {
 285 #ifdef HAVE_TAGCACHE
 286             if (!tagcache_prepare_shutdown())
 287             {
 288                 cancel_shutdown();
 289                 splash(HZ, ID2P(LANG_TAGCACHE_BUSY));
 290                 return false;
 291             }
 292 #endif
 293             if (battery_level() > 10)
 294                 splash(0, str(LANG_SHUTTINGDOWN));
 295             else
 296             {
 297                 msg_id = LANG_WARNING_BATTERY_LOW;
 298                 splashf(0, "%s %s", str(LANG_WARNING_BATTERY_LOW),
 299                                     str(LANG_SHUTTINGDOWN));
 300             }
 301         }
 302         else
 303         {
 304             msg_id = LANG_WARNING_BATTERY_EMPTY;
 305             splashf(0, "%s %s", str(LANG_WARNING_BATTERY_EMPTY),
 306                                 str(LANG_SHUTTINGDOWN));
 307         }
 308
 309         if (global_settings.fade_on_stop
 310             && (audio_stat & AUDIO_STATUS_PLAY))
 311         {
 312             fade(false, false);
 313         }
 314
 315         if (batt_safe) /* do not save on critical battery */
 316         {
 317 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 318             if (audio_stat & AUDIO_STATUS_RECORD)
 319             {
 320                 rec_command(RECORDING_CMD_STOP);
 321                 /* wait for stop to complete */
 322                 while (audio_status() & AUDIO_STATUS_RECORD)
 323                     sleep(1);
 324             }
 325 #endif
 326             bookmark_autobookmark(false);
 327
 328             /* audio_stop_recording == audio_stop for HWCODEC */
 329             audio_stop();
 330
 331             if (callback != NULL)
 332                 callback(parameter);
 333
 334 #if CONFIG_CODEC != SWCODEC
 335             /* wait for audio_stop or audio_stop_recording to complete */
 336             while (audio_status())
 337                 sleep(1);
 338 #endif
 339
 340 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 341             audio_close_recording();
 342 #endif
 343
 344             if(global_settings.talk_menu)
 345             {
 346                 bool enqueue = false;
 347                 if(msg_id != -1)
 348                 {
 349                     talk_id(msg_id, enqueue);
 350                     enqueue = true;
 351                 }
 352                 talk_id(LANG_SHUTTINGDOWN, enqueue);
 353 #if CONFIG_CODEC == SWCODEC
 354                 voice_wait();
 355 #endif
 356             }
 357
 358             system_flush();
 359 #ifdef HAVE_EEPROM_SETTINGS
 360             if (firmware_settings.initialized)
 361             {
 362                 firmware_settings.disk_clean = true;
 363                 firmware_settings.bl_version = 0;
 364                 eeprom_settings_store();
 365             }
 366 #endif
 367         }
 368 #ifdef HAVE_DIRCACHE
 369         else
 370             dircache_disable();
 371 #endif
 372
 373         shutdown_hw();
 374     }
 375     return false;
 376 }
 377
 378 bool list_stop_handler(void)
 379 {
 380     bool ret = false;
 381
 382 #if CONFIG_TUNER
 383     radio_stop();
 384 #endif
 385
 386     /* Stop the music if it is playing */
 387     if(audio_status())
 388     {
 389         if (!global_settings.party_mode)
 390         {
 391             if (global_settings.fade_on_stop)
 392                 fade(false, false);
 393             bookmark_autobookmark(true);
 394             audio_stop();
 395             ret = true;  /* bookmarking can make a refresh necessary */
 396         }
 397     }
 398 #if CONFIG_CHARGING
 399 #if (CONFIG_KEYPAD == RECORDER_PAD) && !defined(HAVE_SW_POWEROFF)
 400     else
 401     {
 402         if (charger_inserted())
 403             charging_splash();
 404         else
 405             shutdown_screen(); /* won't return if shutdown actually happens */
 406
 407         ret = true;  /* screen is dirty, caller needs to refresh */
 408     }
 409 #endif
 410 #ifndef HAVE_POWEROFF_WHILE_CHARGING
 411     {
 412         static long last_off = 0;
 413
 414         if (TIME_BEFORE(current_tick, last_off + HZ/2))
 415         {
 416             if (charger_inserted())
 417             {
 418                 charging_splash();
 419                 ret = true;  /* screen is dirty, caller needs to refresh */
 420             }
 421         }
 422         last_off = current_tick;
 423     }
 424 #endif
 425 #endif /* CONFIG_CHARGING */
 426     return ret;
 427 }
 428
 429 #if CONFIG_CHARGING
 430 static bool waiting_to_resume_play = false;
 431 static long play_resume_tick;
 432
 433 static void car_adapter_mode_processing(bool inserted)
 434 {
 435     if (global_settings.car_adapter_mode)
 436     {
 437         if(inserted)
 438         {
 439             /*
 440              * Just got plugged in, delay & resume if we were playing
 441              */
 442             if (audio_status() & AUDIO_STATUS_PAUSE)
 443             {
 444                 /* delay resume a bit while the engine is cranking */
 445                 play_resume_tick = current_tick + HZ*5;
 446                 waiting_to_resume_play = true;
 447             }
 448         }
 449         else
 450         {
 451             /*
 452              * Just got unplugged, pause if playing
 453              */
 454             if ((audio_status() & AUDIO_STATUS_PLAY) &&
 455                 !(audio_status() & AUDIO_STATUS_PAUSE))
 456             {
 457                 pause_action(true, true);
 458             }
 459             waiting_to_resume_play = false;
 460         }
 461     }
 462 }
 463
 464 static void car_adapter_tick(void)
 465 {
 466     if (waiting_to_resume_play)
 467     {
 468         if (TIME_AFTER(current_tick, play_resume_tick))
 469         {
 470             if (audio_status() & AUDIO_STATUS_PAUSE)
 471             {
 472                 queue_broadcast(SYS_CAR_ADAPTER_RESUME, 0);
 473             }
 474             waiting_to_resume_play = false;
 475         }
 476     }
 477 }
 478
 479 void car_adapter_mode_init(void)
 480 {
 481     tick_add_task(car_adapter_tick);
 482 }
 483 #endif
 484
 485 #ifdef HAVE_HEADPHONE_DETECTION
 486 static void unplug_change(bool inserted)
 487 {
 488     static bool headphone_caused_pause = false;
 489
 490     if (global_settings.unplug_mode)
 491     {
 492         int audio_stat = audio_status();
 493         if (inserted)
 494         {
 495             backlight_on();
 496             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 497                     headphone_caused_pause &&
 498                     global_settings.unplug_mode > 1 )
 499                 unpause_action(true, true);
 500             headphone_caused_pause = false;
 501         } else {
 502             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 503                     !(audio_stat & AUDIO_STATUS_PAUSE))
 504             {
 505                 headphone_caused_pause = true;
 506                 pause_action(false, false);
 507             }
 508         }
 509     }
 510 }
 511 #endif
 512
 513 long default_event_handler_ex(long event, void (*callback)(void *), void *parameter)
 514 {
 515 #if CONFIG_PLATFORM & (PLATFORM_ANDROID|PLATFORM_MAEMO)
 516     static bool resume = false;
 517 #endif
 518
 519     switch(event)
 520     {
 521         case SYS_BATTERY_UPDATE:
 522             if(global_settings.talk_battery_level)
 523             {
 524                 talk_ids(true, VOICE_PAUSE, VOICE_PAUSE,
 525                          LANG_BATTERY_TIME,
 526                          TALK_ID(battery_level(), UNIT_PERCENT),
 527                          VOICE_PAUSE);
 528                 talk_force_enqueue_next();
 529             }
 530             break;
 531         case SYS_USB_CONNECTED:
 532             if (callback != NULL)
 533                 callback(parameter);
 534 #if (CONFIG_STORAGE & STORAGE_MMC)
 535             if (!mmc_touched() ||
 536                 (mmc_remove_request() == SYS_HOTSWAP_EXTRACTED))
 537 #endif
 538             {
 539                 system_flush();
 540 #ifdef BOOTFILE
 541 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 542                 check_bootfile(false); /* gets initial size */
 543 #endif
 544 #endif
 545                 gui_usb_screen_run(false);
 546 #ifdef BOOTFILE
 547 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 548                 check_bootfile(true);
 549 #endif
 550 #endif
 551                 system_restore();
 552             }
 553             return SYS_USB_CONNECTED;
 554
 555         case SYS_POWEROFF:
 556             if (!clean_shutdown(callback, parameter))
 557                 return SYS_POWEROFF;
 558             break;
 559 #if CONFIG_CHARGING
 560         case SYS_CHARGER_CONNECTED:
 561             car_adapter_mode_processing(true);
 562             return SYS_CHARGER_CONNECTED;
 563
 564         case SYS_CHARGER_DISCONNECTED:
 565             car_adapter_mode_processing(false);
 566             /*reset rockbox battery runtime*/
 567             global_status.runtime = 0;
 568             return SYS_CHARGER_DISCONNECTED;
 569
 570         case SYS_CAR_ADAPTER_RESUME:
 571             unpause_action(true, true);
 572             return SYS_CAR_ADAPTER_RESUME;
 573 #endif
 574 #ifdef HAVE_HOTSWAP_STORAGE_AS_MAIN
 575         case SYS_FS_CHANGED:
 576         {
 577             /* simple sanity: assume rockbox is on the first hotswappable
 578              * driver, abort out if that one isn't inserted */
 579             int i;
 580             for (i = 0; i < NUM_DRIVES; i++)
 581             {
 582                 if (storage_removable(i) && !storage_present(i))
 583                     return SYS_FS_CHANGED;
 584             }
 585             system_flush();
 586             check_bootfile(true); /* state gotten in main.c:init() */
 587             system_restore();
 588         }
 589             return SYS_FS_CHANGED;
 590 #endif
 591 #ifdef HAVE_HEADPHONE_DETECTION
 592         case SYS_PHONE_PLUGGED:
 593             unplug_change(true);
 594             return SYS_PHONE_PLUGGED;
 595
 596         case SYS_PHONE_UNPLUGGED:
 597             unplug_change(false);
 598             return SYS_PHONE_UNPLUGGED;
 599 #endif
 600 #ifdef IPOD_ACCESSORY_PROTOCOL
 601         case SYS_IAP_PERIODIC:
 602             iap_periodic();
 603             return SYS_IAP_PERIODIC;
 604         case SYS_IAP_HANDLEPKT:
 605             iap_handlepkt();
 606             return SYS_IAP_HANDLEPKT;
 607 #endif
 608 #if CONFIG_PLATFORM & (PLATFORM_ANDROID|PLATFORM_MAEMO)
 609         /* stop playback if we receive a call */
 610         case SYS_CALL_INCOMING:
 611             resume = audio_status() == AUDIO_STATUS_PLAY;
 612             list_stop_handler();
 613             return SYS_CALL_INCOMING;
 614         /* resume playback if needed */
 615         case SYS_CALL_HUNG_UP:
 616             if (resume && playlist_resume() != -1)
 617             {
 618                 playlist_start(global_status.resume_index,
 619                                global_status.resume_offset);
 620             }
 621             resume = false;
 622             return SYS_CALL_HUNG_UP;
 623 #endif
 624 #if (CONFIG_PLATFORM & PLATFORM_HOSTED) && defined(PLATFORM_HAS_VOLUME_CHANGE)
 625         case SYS_VOLUME_CHANGED:
 626         {
 627             static bool firstvolume = true;
 628             int volume = hosted_get_volume();
 629             DEBUGF("SYS_VOLUME_CHANGED: %d\n", volume);
 630             if (global_settings.volume != volume) {
 631                 global_settings.volume = volume;
 632                 if (firstvolume) {
 633                     setvol();
 634                     firstvolume = false;
 635                 }
 636             }
 637             return 0;
 638         }
 639 #endif
 640 #ifdef HAVE_MULTIMEDIA_KEYS
 641         /* multimedia keys on keyboards, headsets */
 642         case BUTTON_MULTIMEDIA_PLAYPAUSE:
 643         {
 644             int status = audio_status();
 645             if (status & AUDIO_STATUS_PLAY)
 646             {
 647                 if (status & AUDIO_STATUS_PAUSE)
 648                     unpause_action(true, true);
 649                 else
 650                     pause_action(true, true);
 651             }
 652             else
 653                 if (playlist_resume() != -1)
 654                 {
 655                     playlist_start(global_status.resume_index,
 656                                    global_status.resume_offset);
 657                 }
 658             return event;
 659         }
 660         case BUTTON_MULTIMEDIA_NEXT:
 661             audio_next();
 662             return event;
 663         case BUTTON_MULTIMEDIA_PREV:
 664             audio_prev();
 665             return event;
 666         case BUTTON_MULTIMEDIA_STOP:
 667             list_stop_handler();
 668             return event;
 669         case BUTTON_MULTIMEDIA_REW:
 670         case BUTTON_MULTIMEDIA_FFWD:
 671             /* not supported yet, needs to be done in the WPS */
 672             return 0;
 673 #endif
 674     }
 675     return 0;
 676 }
 677
 678 long default_event_handler(long event)
 679 {
 680     return default_event_handler_ex(event, NULL, NULL);
 681 }
 682
 683 int show_logo( void )
 684 {
 685 #ifdef HAVE_LCD_BITMAP
 686     char version[32];
 687     int font_h, font_w;
 688
 689     snprintf(version, sizeof(version), "Ver. %s", rbversion);
 690
 691     lcd_clear_display();
 692 #if defined(SANSA_CLIP) || defined(SANSA_CLIPV2) || defined(SANSA_CLIPPLUS)
 693     /* display the logo in the blue area of the screen */
 694     lcd_setfont(FONT_SYSFIXED);
 695     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 696     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 697                0, (unsigned char *)version);
 698     lcd_bitmap(rockboxlogo, 0, 16, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 699 #else
 700     lcd_bitmap(rockboxlogo, 0, 10, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 701     lcd_setfont(FONT_SYSFIXED);
 702     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 703     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 704                LCD_HEIGHT-font_h, (unsigned char *)version);
 705 #endif
 706     lcd_setfont(FONT_UI);
 707
 708 #else
 709     char *rockbox = "  ROCKbox!";
 710
 711     lcd_clear_display();
 712     lcd_double_height(true);
 713     lcd_puts(0, 0, rockbox);
 714     lcd_puts_scroll(0, 1, rbversion);
 715 #endif
 716     lcd_update();
 717
 718 #ifdef HAVE_REMOTE_LCD
 719     lcd_remote_clear_display();
 720     lcd_remote_bitmap(remote_rockboxlogo, 0, 10, BMPWIDTH_remote_rockboxlogo,
 721                       BMPHEIGHT_remote_rockboxlogo);
 722     lcd_remote_setfont(FONT_SYSFIXED);
 723     lcd_remote_getstringsize((unsigned char *)"A", &font_w, &font_h);
 724     lcd_remote_putsxy((LCD_REMOTE_WIDTH/2) - ((strlen(version)*font_w)/2),
 725                        LCD_REMOTE_HEIGHT-font_h, (unsigned char *)version);
 726     lcd_remote_setfont(FONT_UI);
 727     lcd_remote_update();
 728 #endif
 729
 730     return 0;
 731 }
 732
 733 #ifdef BOOTFILE
 734 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF) || defined(HAVE_HOTSWAP_STORAGE_AS_MAIN)
 735 /*
 736     memorize/compare details about the BOOTFILE
 737     we don't use dircache because it may not be up to date after
 738     USB disconnect (scanning in the background)
 739 */
 740 void check_bootfile(bool do_rolo)
 741 {
 742     static unsigned short wrtdate = 0;
 743     static unsigned short wrttime = 0;
 744     DIR* dir = NULL;
 745     struct dirent* entry = NULL;
 746
 747     /* 1. open BOOTDIR and find the BOOTFILE dir entry */
 748     dir = opendir(BOOTDIR);
 749
 750     if(!dir) return; /* do we want an error splash? */
 751
 752     /* loop all files in BOOTDIR */
 753     while(0 != (entry = readdir(dir)))
 754     {
 755         if(!strcasecmp(entry->d_name, BOOTFILE))
 756         {
 757             struct dirinfo info = dir_get_info(dir, entry);
 758             /* found the bootfile */
 759             if(wrtdate && do_rolo)
 760             {
 761                 if((info.wrtdate != wrtdate) ||
 762                    (info.wrttime != wrttime))
 763                 {
 764                     static const char *lines[] = { ID2P(LANG_BOOT_CHANGED),
 765                                                    ID2P(LANG_REBOOT_NOW) };
 766                     static const struct text_message message={ lines, 2 };
 767                     button_clear_queue(); /* Empty the keyboard buffer */
 768                     if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES)
 769                         rolo_load(BOOTDIR "/" BOOTFILE);
 770                 }
 771             }
 772             wrtdate = info.wrtdate;
 773             wrttime = info.wrttime;
 774         }
 775     }
 776     closedir(dir);
 777 }
 778 #endif
 779 #endif
 780
 781 /* check range, set volume and save settings */
 782 void setvol(void)
 783 {
 784     const int min_vol = sound_min(SOUND_VOLUME);
 785     const int max_vol = sound_max(SOUND_VOLUME);
 786     if (global_settings.volume < min_vol)
 787         global_settings.volume = min_vol;
 788     if (global_settings.volume > max_vol)
 789         global_settings.volume = max_vol;
 790     sound_set_volume(global_settings.volume);
 791     global_status.last_volume_change = current_tick;
 792     settings_save();
 793 }
 794
 795 char* strrsplt(char* str, int c)
 796 {
 797     char* s = strrchr(str, c);
 798
 799     if (s != NULL)
 800     {
 801         *s++ = '\0';
 802     }
 803     else
 804     {
 805         s = str;
 806     }
 807
 808     return s;
 809 }
 810
 811 /*
 812  * removes the extension of filename (if it doesn't start with a .)
 813  * puts the result in buffer
 814  */
 815 char *strip_extension(char* buffer, int buffer_size, const char *filename)
 816 {
 817     char *dot = strrchr(filename, '.');
 818     int len;
 819
 820     if (buffer_size <= 0)
 821     {
 822         return NULL;
 823     }
 824
 825     buffer_size--;  /* Make room for end nil */
 826
 827     if (dot != 0 && filename[0] != '.')
 828     {
 829         len = dot - filename;
 830         len = MIN(len, buffer_size);
 831     }
 832     else
 833     {
 834         len = buffer_size;
 835     }
 836
 837     strlcpy(buffer, filename, len + 1);
 838
 839     return buffer;
 840 }
 841 #endif /* !defined(__PCTOOL__) */
 842
 843 /* Read (up to) a line of text from fd into buffer and return number of bytes
 844  * read (which may be larger than the number of bytes stored in buffer). If
 845  * an error occurs, -1 is returned (and buffer contains whatever could be
 846  * read). A line is terminated by a LF char. Neither LF nor CR chars are
 847  * stored in buffer.
 848  */
 849 int read_line(int fd, char* buffer, int buffer_size)
 850 {
 851     int count = 0;
 852     int num_read = 0;
 853
 854     errno = 0;
 855
 856     while (count < buffer_size)
 857     {
 858         unsigned char c;
 859
 860         if (1 != read(fd, &c, 1))
 861             break;
 862
 863         num_read++;
 864
 865         if ( c == '\n' )
 866             break;
 867
 868         if ( c == '\r' )
 869             continue;
 870
 871         buffer[count++] = c;
 872     }
 873
 874     buffer[MIN(count, buffer_size - 1)] = 0;
 875
 876     return errno ? -1 : num_read;
 877 }
 878
 879
 880 char* skip_whitespace(char* const str)
 881 {
 882     char *s = str;
 883
 884     while (isspace(*s))
 885         s++;
 886
 887     return s;
 888 }
 889
 890 /* Format time into buf.
 891  *
 892  * buf      - buffer to format to.
 893  * buf_size - size of buffer.
 894  * t        - time to format, in milliseconds.
 895  */
 896 void format_time(char* buf, int buf_size, long t)
 897 {
 898     int const time = abs(t / 1000);
 899     int const hours = time / 3600;
 900     int const minutes = time / 60 - hours * 60;
 901     int const seconds = time % 60;
 902     const char * const sign = &"-"[t < 0 ? 0 : 1];
 903
 904     if ( hours == 0 )
 905     {
 906         snprintf(buf, buf_size, "%s%d:%02d", sign, minutes, seconds);
 907     }
 908     else
 909     {
 910         snprintf(buf, buf_size, "%s%d:%02d:%02d", sign, hours, minutes,
 911                  seconds);
 912     }
 913 }
 914
 915
 916 /** Open a UTF-8 file and set file descriptor to first byte after BOM.
 917  *  If no BOM is present this behaves like open().
 918  *  If the file is opened for writing and O_TRUNC is set, write a BOM to
 919  *  the opened file and leave the file pointer set after the BOM.
 920  */
 921 #define BOM "\xef\xbb\xbf"
 922 #define BOM_SIZE 3
 923
 924 int open_utf8(const char* pathname, int flags)
 925 {
 926     int fd;
 927     unsigned char bom[BOM_SIZE];
 928
 929     fd = open(pathname, flags, 0666);
 930     if(fd < 0)
 931         return fd;
 932
 933     if(flags & (O_TRUNC | O_WRONLY))
 934     {
 935         write(fd, BOM, BOM_SIZE);
 936     }
 937     else
 938     {
 939         read(fd, bom, BOM_SIZE);
 940         /* check for BOM */
 941         if(memcmp(bom, BOM, BOM_SIZE))
 942             lseek(fd, 0, SEEK_SET);
 943     }
 944     return fd;
 945 }
 946
 947
 948 #ifdef HAVE_LCD_COLOR
 949 /*
 950  * Helper function to convert a string of 6 hex digits to a native colour
 951  */
 952
 953 static int hex2dec(int c)
 954 {
 955     return  (((c) >= '0' && ((c) <= '9')) ? (c) - '0' :
 956                                             (toupper(c)) - 'A' + 10);
 957 }
 958
 959 int hex_to_rgb(const char* hex, int* color)
 960 {
 961     int red, green, blue;
 962     int i = 0;
 963
 964     while ((i < 6) && (isxdigit(hex[i])))
 965         i++;
 966
 967     if (i < 6)
 968         return -1;
 969
 970     red = (hex2dec(hex[0]) << 4) | hex2dec(hex[1]);
 971     green = (hex2dec(hex[2]) << 4) | hex2dec(hex[3]);
 972     blue = (hex2dec(hex[4]) << 4) | hex2dec(hex[5]);
 973
 974     *color = LCD_RGBPACK(red,green,blue);
 975
 976     return 0;
 977 }
 978 #endif /* HAVE_LCD_COLOR */
 979
 980 #ifdef HAVE_LCD_BITMAP
 981 /* '0'-'3' are ASCII 0x30 to 0x33 */
 982 #define is0123(x) (((x) & 0xfc) == 0x30)
 983 #if !defined(__PCTOOL__) || defined(CHECKWPS)
 984 bool parse_color(enum screen_type screen, char *text, int *value)
 985 {
 986     (void)text; (void)value; /* silence warnings on mono bitmap */
 987     (void)screen;
 988
 989 #ifdef HAVE_LCD_COLOR
 990     if (screens[screen].depth > 2)
 991     {
 992         if (hex_to_rgb(text, value) < 0)
 993             return false;
 994         else
 995             return true;
 996     }
 997 #endif
 998
 999 #if LCD_DEPTH == 2 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH == 2)
1000     if (screens[screen].depth == 2)
1001     {
1002         if (text[1] != '\0' || !is0123(*text))
1003             return false;
1004         *value = *text - '0';
1005         return true;
1006     }
1007 #endif
1008     return false;
1009 }
1010 #endif /* !defined(__PCTOOL__) || defined(CHECKWPS) */
1011
1012 /* only used in USB HID and set_time screen */
1013 #if defined(USB_ENABLE_HID) || (CONFIG_RTC != 0)
1014 int clamp_value_wrap(int value, int max, int min)
1015 {
1016     if (value > max)
1017         return min;
1018     if (value < min)
1019         return max;
1020     return value;
1021 }
1022 #endif
1023 #endif