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 "lcd.h"
  30 #include "file.h"
  31 #include "filefuncs.h"
  32 #ifndef __PCTOOL__
  33 #include "lang.h"
  34 #include "dir.h"
  35 #include "lcd-remote.h"
  36 #include "system.h"
  37 #include "timefuncs.h"
  38 #include "screens.h"
  39 #include "usb_screen.h"
  40 #include "talk.h"
  41 #include "audio.h"
  42 #include "mp3_playback.h"
  43 #include "settings.h"
  44 #include "storage.h"
  45 #include "ata_idle_notify.h"
  46 #include "kernel.h"
  47 #include "power.h"
  48 #include "powermgmt.h"
  49 #include "backlight.h"
  50 #include "version.h"
  51 #include "font.h"
  52 #include "splash.h"
  53 #include "tagcache.h"
  54 #include "scrobbler.h"
  55 #include "sound.h"
  56 #include "playlist.h"
  57 #include "yesno.h"
  58 #include "viewport.h"
  59
  60 #if CONFIG_TUNER
  61 #include "radio.h"
  62 #endif
  63
  64 #ifdef IPOD_ACCESSORY_PROTOCOL
  65 #include "iap.h"
  66 #endif
  67
  68 #if (CONFIG_STORAGE & STORAGE_MMC)
  69 #include "ata_mmc.h"
  70 #endif
  71 #include "tree.h"
  72 #include "eeprom_settings.h"
  73 #if defined(HAVE_RECORDING) && !defined(__PCTOOL__)
  74 #include "recording.h"
  75 #endif
  76 #if defined(HAVE_LCD_BITMAP) && !defined(__PCTOOL__)
  77 #include "bmp.h"
  78 #include "icons.h"
  79 #endif /* End HAVE_LCD_BITMAP */
  80 #include "bookmark.h"
  81 #include "wps.h"
  82 #include "playback.h"
  83
  84 #ifdef BOOTFILE
  85 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF) \
  86         || defined(HAVE_HOTSWAP_STORAGE_AS_MAIN)
  87 #include "rolo.h"
  88 #endif
  89 #endif
  90
  91 /* units used with output_dyn_value */
  92 const unsigned char * const byte_units[] =
  93 {
  94     ID2P(LANG_BYTE),
  95     ID2P(LANG_KILOBYTE),
  96     ID2P(LANG_MEGABYTE),
  97     ID2P(LANG_GIGABYTE)
  98 };
  99
 100 const unsigned char * const * const kbyte_units = &byte_units[1];
 101
 102 /* Format a large-range value for output, using the appropriate unit so that
 103  * the displayed value is in the range 1 <= display < 1000 (1024 for "binary"
 104  * units) if possible, and 3 significant digits are shown. If a buffer is
 105  * given, the result is snprintf()'d into that buffer, otherwise the result is
 106  * voiced.*/
 107 char *output_dyn_value(char *buf, int buf_size, int value,
 108                        const unsigned char * const *units, bool bin_scale)
 109 {
 110     int scale = bin_scale ? 1024 : 1000;
 111     int fraction = 0;
 112     int unit_no = 0;
 113     char tbuf[5];
 114
 115     while (value >= scale)
 116     {
 117         fraction = value % scale;
 118         value /= scale;
 119         unit_no++;
 120     }
 121     if (bin_scale)
 122         fraction = fraction * 1000 / 1024;
 123
 124     if (value >= 100 || !unit_no)
 125         tbuf[0] = '\0';
 126     else if (value >= 10)
 127         snprintf(tbuf, sizeof(tbuf), "%01d", fraction / 100);
 128     else
 129         snprintf(tbuf, sizeof(tbuf), "%02d", fraction / 10);
 130
 131     if (buf)
 132     {
 133         if (*tbuf)
 134             snprintf(buf, buf_size, "%d%s%s%s", value, str(LANG_POINT),
 135                      tbuf, P2STR(units[unit_no]));
 136         else
 137             snprintf(buf, buf_size, "%d%s", value, P2STR(units[unit_no]));
 138     }
 139     else
 140     {
 141         talk_fractional(tbuf, value, P2ID(units[unit_no]));
 142     }
 143     return buf;
 144 }
 145
 146 /* Ask the user if they really want to erase the current dynamic playlist
 147  * returns true if the playlist should be replaced */
 148 bool warn_on_pl_erase(void)
 149 {
 150     if (global_settings.warnon_erase_dynplaylist &&
 151         !global_settings.party_mode &&
 152         playlist_modified(NULL))
 153     {
 154         static const char *lines[] =
 155             {ID2P(LANG_WARN_ERASEDYNPLAYLIST_PROMPT)};
 156         static const struct text_message message={lines, 1};
 157
 158         return (gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES);
 159     }
 160     else
 161         return true;
 162 }
 163
 164
 165 /* Performance optimized version of the read_line() (see below) function. */
 166 int fast_readline(int fd, char *buf, int buf_size, void *parameters,
 167                   int (*callback)(int n, const char *buf, void *parameters))
 168 {
 169     char *p, *next;
 170     int rc, pos = 0;
 171     int count = 0;
 172
 173     while ( 1 )
 174     {
 175         next = NULL;
 176
 177         rc = read(fd, &buf[pos], buf_size - pos - 1);
 178         if (rc >= 0)
 179             buf[pos+rc] = '\0';
 180
 181         if ( (p = strchr(buf, '\r')) != NULL)
 182         {
 183             *p = '\0';
 184             next = ++p;
 185         }
 186         else
 187             p = buf;
 188
 189         if ( (p = strchr(p, '\n')) != NULL)
 190         {
 191             *p = '\0';
 192             next = ++p;
 193         }
 194
 195         rc = callback(count, buf, parameters);
 196         if (rc < 0)
 197             return rc;
 198
 199         count++;
 200         if (next)
 201         {
 202             pos = buf_size - ((long)next - (long)buf) - 1;
 203             memmove(buf, next, pos);
 204         }
 205         else
 206             break ;
 207     }
 208
 209     return 0;
 210 }
 211
 212 /* parse a line from a configuration file. the line format is:
 213
 214    name: value
 215
 216    Any whitespace before setting name or value (after ':') is ignored.
 217    A # as first non-whitespace character discards the whole line.
 218    Function sets pointers to null-terminated setting name and value.
 219    Returns false if no valid config entry was found.
 220 */
 221
 222 bool settings_parseline(char* line, char** name, char** value)
 223 {
 224     char* ptr;
 225
 226     line = skip_whitespace(line);
 227
 228     if ( *line == '#' )
 229         return false;
 230
 231     ptr = strchr(line, ':');
 232     if ( !ptr )
 233         return false;
 234
 235     *name = line;
 236     *ptr = 0;
 237     ptr++;
 238     ptr = skip_whitespace(ptr);
 239     *value = ptr;
 240     return true;
 241 }
 242
 243 static void system_flush(void)
 244 {
 245     scrobbler_shutdown();
 246     playlist_shutdown();
 247     tree_flush();
 248     call_storage_idle_notifys(true); /*doesnt work on usb and shutdown from ata thread */
 249 }
 250
 251 static void system_restore(void)
 252 {
 253     tree_restore();
 254     scrobbler_init();
 255 }
 256
 257 static bool clean_shutdown(void (*callback)(void *), void *parameter)
 258 {
 259 #if (CONFIG_PLATFORM & PLATFORM_HOSTED)
 260     (void)callback;
 261     (void)parameter;
 262     bookmark_autobookmark(false);
 263     call_storage_idle_notifys(true);
 264 #else
 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 #endif
 376     return false;
 377 }
 378
 379 bool list_stop_handler(void)
 380 {
 381     bool ret = false;
 382
 383 #if CONFIG_TUNER
 384     radio_stop();
 385 #endif
 386
 387     /* Stop the music if it is playing */
 388     if(audio_status())
 389     {
 390         if (!global_settings.party_mode)
 391         {
 392             if (global_settings.fade_on_stop)
 393                 fade(false, false);
 394             bookmark_autobookmark(true);
 395             audio_stop();
 396             ret = true;  /* bookmarking can make a refresh necessary */
 397         }
 398     }
 399 #if CONFIG_CHARGING
 400 #if (CONFIG_KEYPAD == RECORDER_PAD) && !defined(HAVE_SW_POWEROFF)
 401     else
 402     {
 403         if (charger_inserted())
 404             charging_splash();
 405         else
 406             shutdown_screen(); /* won't return if shutdown actually happens */
 407
 408         ret = true;  /* screen is dirty, caller needs to refresh */
 409     }
 410 #endif
 411 #ifndef HAVE_POWEROFF_WHILE_CHARGING
 412     {
 413         static long last_off = 0;
 414
 415         if (TIME_BEFORE(current_tick, last_off + HZ/2))
 416         {
 417             if (charger_inserted())
 418             {
 419                 charging_splash();
 420                 ret = true;  /* screen is dirty, caller needs to refresh */
 421             }
 422         }
 423         last_off = current_tick;
 424     }
 425 #endif
 426 #endif /* CONFIG_CHARGING */
 427     return ret;
 428 }
 429
 430 #if CONFIG_CHARGING
 431 static bool waiting_to_resume_play = false;
 432 static long play_resume_tick;
 433
 434 static void car_adapter_mode_processing(bool inserted)
 435 {
 436     if (global_settings.car_adapter_mode)
 437     {
 438         if(inserted)
 439         {
 440             /*
 441              * Just got plugged in, delay & resume if we were playing
 442              */
 443             if (audio_status() & AUDIO_STATUS_PAUSE)
 444             {
 445                 /* delay resume a bit while the engine is cranking */
 446                 play_resume_tick = current_tick + HZ*5;
 447                 waiting_to_resume_play = true;
 448             }
 449         }
 450         else
 451         {
 452             /*
 453              * Just got unplugged, pause if playing
 454              */
 455             if ((audio_status() & AUDIO_STATUS_PLAY) &&
 456                 !(audio_status() & AUDIO_STATUS_PAUSE))
 457             {
 458                 if (global_settings.fade_on_stop)
 459                     fade(false, false);
 460                 else
 461                     audio_pause();
 462             }
 463             waiting_to_resume_play = false;
 464         }
 465     }
 466 }
 467
 468 static void car_adapter_tick(void)
 469 {
 470     if (waiting_to_resume_play)
 471     {
 472         if (TIME_AFTER(current_tick, play_resume_tick))
 473         {
 474             if (audio_status() & AUDIO_STATUS_PAUSE)
 475             {
 476                 queue_broadcast(SYS_CAR_ADAPTER_RESUME, 0);
 477             }
 478             waiting_to_resume_play = false;
 479         }
 480     }
 481 }
 482
 483 void car_adapter_mode_init(void)
 484 {
 485     tick_add_task(car_adapter_tick);
 486 }
 487 #endif
 488
 489 #ifdef HAVE_HEADPHONE_DETECTION
 490 static void unplug_change(bool inserted)
 491 {
 492     static bool headphone_caused_pause = false;
 493
 494     if (global_settings.unplug_mode)
 495     {
 496         int audio_stat = audio_status();
 497         if (inserted)
 498         {
 499             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 500                     headphone_caused_pause &&
 501                     global_settings.unplug_mode > 1 )
 502                 audio_resume();
 503             backlight_on();
 504             headphone_caused_pause = false;
 505         } else {
 506             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 507                     !(audio_stat & AUDIO_STATUS_PAUSE))
 508             {
 509                 headphone_caused_pause = true;
 510                 audio_pause();
 511
 512                 if (global_settings.unplug_rw)
 513                 {
 514                     if (audio_current_track()->elapsed >
 515                             (unsigned long)(global_settings.unplug_rw*1000))
 516                         audio_ff_rewind(audio_current_track()->elapsed -
 517                                 (global_settings.unplug_rw*1000));
 518                     else
 519                         audio_ff_rewind(0);
 520                 }
 521             }
 522         }
 523     }
 524 }
 525 #endif
 526
 527 long default_event_handler_ex(long event, void (*callback)(void *), void *parameter)
 528 {
 529 #if CONFIG_PLATFORM & PLATFORM_ANDROID
 530     static bool resume = false;
 531 #endif
 532     switch(event)
 533     {
 534         case SYS_BATTERY_UPDATE:
 535             if(global_settings.talk_battery_level)
 536             {
 537                 talk_ids(true, VOICE_PAUSE, VOICE_PAUSE,
 538                          LANG_BATTERY_TIME,
 539                          TALK_ID(battery_level(), UNIT_PERCENT),
 540                          VOICE_PAUSE);
 541                 talk_force_enqueue_next();
 542             }
 543             break;
 544         case SYS_USB_CONNECTED:
 545             if (callback != NULL)
 546                 callback(parameter);
 547 #if (CONFIG_STORAGE & STORAGE_MMC)
 548             if (!mmc_touched() ||
 549                 (mmc_remove_request() == SYS_HOTSWAP_EXTRACTED))
 550 #endif
 551             {
 552                 system_flush();
 553 #ifdef BOOTFILE
 554 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 555                 check_bootfile(false); /* gets initial size */
 556 #endif
 557 #endif
 558                 gui_usb_screen_run(false);
 559 #ifdef BOOTFILE
 560 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 561                 check_bootfile(true);
 562 #endif
 563 #endif
 564                 system_restore();
 565             }
 566             return SYS_USB_CONNECTED;
 567
 568         case SYS_POWEROFF:
 569             if (!clean_shutdown(callback, parameter))
 570                 return SYS_POWEROFF;
 571             break;
 572 #if CONFIG_CHARGING
 573         case SYS_CHARGER_CONNECTED:
 574             car_adapter_mode_processing(true);
 575             return SYS_CHARGER_CONNECTED;
 576
 577         case SYS_CHARGER_DISCONNECTED:
 578             car_adapter_mode_processing(false);
 579             /*reset rockbox battery runtime*/
 580             global_status.runtime = 0;
 581             return SYS_CHARGER_DISCONNECTED;
 582
 583         case SYS_CAR_ADAPTER_RESUME:
 584             audio_resume();
 585             return SYS_CAR_ADAPTER_RESUME;
 586 #endif
 587 #ifdef HAVE_HOTSWAP_STORAGE_AS_MAIN
 588         case SYS_FS_CHANGED:
 589         {
 590             /* simple sanity: assume rockbox is on the first hotswappable
 591              * driver, abort out if that one isn't inserted */
 592             int i;
 593             for (i = 0; i < NUM_DRIVES; i++)
 594             {
 595                 if (storage_removable(i) && !storage_present(i))
 596                     return SYS_FS_CHANGED;
 597             }
 598             system_flush();
 599             check_bootfile(true); /* state gotten in main.c:init() */
 600             system_restore();
 601         }
 602             return SYS_FS_CHANGED;
 603 #endif
 604 #ifdef HAVE_HEADPHONE_DETECTION
 605         case SYS_PHONE_PLUGGED:
 606             unplug_change(true);
 607             return SYS_PHONE_PLUGGED;
 608
 609         case SYS_PHONE_UNPLUGGED:
 610             unplug_change(false);
 611             return SYS_PHONE_UNPLUGGED;
 612 #endif
 613 #ifdef IPOD_ACCESSORY_PROTOCOL
 614         case SYS_IAP_PERIODIC:
 615             iap_periodic();
 616             return SYS_IAP_PERIODIC;
 617         case SYS_IAP_HANDLEPKT:
 618             iap_handlepkt();
 619             return SYS_IAP_HANDLEPKT;
 620 #endif
 621 #if CONFIG_PLATFORM & PLATFORM_ANDROID
 622         /* stop playback if we receive a call */
 623         case SYS_CALL_INCOMING:
 624             resume = audio_status() == AUDIO_STATUS_PLAY;
 625             list_stop_handler();
 626             return SYS_CALL_INCOMING;
 627         /* resume playback if needed */
 628         case SYS_CALL_HUNG_UP:
 629             if (resume && playlist_resume() != -1)
 630             {
 631                 playlist_start(global_status.resume_index,
 632                     global_status.resume_offset);
 633             }
 634             resume = false;
 635             return SYS_CALL_HUNG_UP;
 636 #endif
 637     }
 638     return 0;
 639 }
 640
 641 long default_event_handler(long event)
 642 {
 643     return default_event_handler_ex(event, NULL, NULL);
 644 }
 645
 646 int show_logo( void )
 647 {
 648 #ifdef HAVE_LCD_BITMAP
 649     char version[32];
 650     int font_h, font_w;
 651
 652     snprintf(version, sizeof(version), "Ver. %s", rbversion);
 653
 654     lcd_clear_display();
 655 #if defined(SANSA_CLIP) || defined(SANSA_CLIPV2) || defined(SANSA_CLIPPLUS)
 656     /* display the logo in the blue area of the screen */
 657     lcd_setfont(FONT_SYSFIXED);
 658     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 659     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 660                0, (unsigned char *)version);
 661     lcd_bitmap(rockboxlogo, 0, 16, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 662 #else
 663     lcd_bitmap(rockboxlogo, 0, 10, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 664     lcd_setfont(FONT_SYSFIXED);
 665     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 666     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 667                LCD_HEIGHT-font_h, (unsigned char *)version);
 668 #endif
 669     lcd_setfont(FONT_UI);
 670
 671 #else
 672     char *rockbox = "  ROCKbox!";
 673
 674     lcd_clear_display();
 675     lcd_double_height(true);
 676     lcd_puts(0, 0, rockbox);
 677     lcd_puts_scroll(0, 1, rbversion);
 678 #endif
 679     lcd_update();
 680
 681 #ifdef HAVE_REMOTE_LCD
 682     lcd_remote_clear_display();
 683     lcd_remote_bitmap(remote_rockboxlogo, 0, 10, BMPWIDTH_remote_rockboxlogo,
 684                       BMPHEIGHT_remote_rockboxlogo);
 685     lcd_remote_setfont(FONT_SYSFIXED);
 686     lcd_remote_getstringsize((unsigned char *)"A", &font_w, &font_h);
 687     lcd_remote_putsxy((LCD_REMOTE_WIDTH/2) - ((strlen(version)*font_w)/2),
 688                        LCD_REMOTE_HEIGHT-font_h, (unsigned char *)version);
 689     lcd_remote_setfont(FONT_UI);
 690     lcd_remote_update();
 691 #endif
 692
 693     return 0;
 694 }
 695
 696 #ifdef BOOTFILE
 697 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF) || defined(HAVE_HOTSWAP_STORAGE_AS_MAIN)
 698 /*
 699     memorize/compare details about the BOOTFILE
 700     we don't use dircache because it may not be up to date after
 701     USB disconnect (scanning in the background)
 702 */
 703 void check_bootfile(bool do_rolo)
 704 {
 705     static unsigned short wrtdate = 0;
 706     static unsigned short wrttime = 0;
 707     DIR* dir = NULL;
 708     struct dirent* entry = NULL;
 709
 710     /* 1. open BOOTDIR and find the BOOTFILE dir entry */
 711     dir = opendir(BOOTDIR);
 712
 713     if(!dir) return; /* do we want an error splash? */
 714
 715     /* loop all files in BOOTDIR */
 716     while(0 != (entry = readdir(dir)))
 717     {
 718         if(!strcasecmp(entry->d_name, BOOTFILE))
 719         {
 720             struct dirinfo info = dir_get_info(dir, entry);
 721             /* found the bootfile */
 722             if(wrtdate && do_rolo)
 723             {
 724                 if((info.wrtdate != wrtdate) ||
 725                    (info.wrttime != wrttime))
 726                 {
 727                     static const char *lines[] = { ID2P(LANG_BOOT_CHANGED),
 728                                                    ID2P(LANG_REBOOT_NOW) };
 729                     static const struct text_message message={ lines, 2 };
 730                     button_clear_queue(); /* Empty the keyboard buffer */
 731                     if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES)
 732                     rolo_load(BOOTDIR "/" BOOTFILE);
 733                 }
 734             }
 735             wrtdate = info.wrtdate;
 736             wrttime = info.wrttime;
 737         }
 738     }
 739     closedir(dir);
 740 }
 741 #endif
 742 #endif
 743
 744 /* check range, set volume and save settings */
 745 void setvol(void)
 746 {
 747     const int min_vol = sound_min(SOUND_VOLUME);
 748     const int max_vol = sound_max(SOUND_VOLUME);
 749     if (global_settings.volume < min_vol)
 750         global_settings.volume = min_vol;
 751     if (global_settings.volume > max_vol)
 752         global_settings.volume = max_vol;
 753     sound_set_volume(global_settings.volume);
 754     global_status.last_volume_change = current_tick;
 755     settings_save();
 756 }
 757
 758 char* strrsplt(char* str, int c)
 759 {
 760     char* s = strrchr(str, c);
 761
 762     if (s != NULL)
 763     {
 764         *s++ = '\0';
 765     }
 766     else
 767     {
 768         s = str;
 769     }
 770
 771     return s;
 772 }
 773
 774 /*
 775  * removes the extension of filename (if it doesn't start with a .)
 776  * puts the result in buffer
 777  */
 778 char *strip_extension(char* buffer, int buffer_size, const char *filename)
 779 {
 780     char *dot = strrchr(filename, '.');
 781     int len;
 782
 783     if (buffer_size <= 0)
 784     {
 785         return NULL;
 786     }
 787
 788     buffer_size--;  /* Make room for end nil */
 789
 790     if (dot != 0 && filename[0] != '.')
 791     {
 792         len = dot - filename;
 793         len = MIN(len, buffer_size);
 794     }
 795     else
 796     {
 797         len = buffer_size;
 798     }
 799
 800     strlcpy(buffer, filename, len + 1);
 801
 802     return buffer;
 803 }
 804 #endif /* !defined(__PCTOOL__) */
 805
 806 /* Read (up to) a line of text from fd into buffer and return number of bytes
 807  * read (which may be larger than the number of bytes stored in buffer). If
 808  * an error occurs, -1 is returned (and buffer contains whatever could be
 809  * read). A line is terminated by a LF char. Neither LF nor CR chars are
 810  * stored in buffer.
 811  */
 812 int read_line(int fd, char* buffer, int buffer_size)
 813 {
 814     int count = 0;
 815     int num_read = 0;
 816
 817     errno = 0;
 818
 819     while (count < buffer_size)
 820     {
 821         unsigned char c;
 822
 823         if (1 != read(fd, &c, 1))
 824             break;
 825
 826         num_read++;
 827
 828         if ( c == '\n' )
 829             break;
 830
 831         if ( c == '\r' )
 832             continue;
 833
 834         buffer[count++] = c;
 835     }
 836
 837     buffer[MIN(count, buffer_size - 1)] = 0;
 838
 839     return errno ? -1 : num_read;
 840 }
 841
 842
 843 char* skip_whitespace(char* const str)
 844 {
 845     char *s = str;
 846
 847     while (isspace(*s))
 848         s++;
 849
 850     return s;
 851 }
 852
 853 /* Format time into buf.
 854  *
 855  * buf      - buffer to format to.
 856  * buf_size - size of buffer.
 857  * t        - time to format, in milliseconds.
 858  */
 859 void format_time(char* buf, int buf_size, long t)
 860 {
 861     if ( t < 3600000 )
 862     {
 863         snprintf(buf, buf_size, "%d:%02d",
 864                  (int) (t / 60000), (int) (t % 60000 / 1000));
 865     }
 866     else
 867     {
 868         snprintf(buf, buf_size, "%d:%02d:%02d",
 869                  (int) (t / 3600000), (int) (t % 3600000 / 60000),
 870                  (int) (t % 60000 / 1000));
 871     }
 872 }
 873
 874
 875 /** Open a UTF-8 file and set file descriptor to first byte after BOM.
 876  *  If no BOM is present this behaves like open().
 877  *  If the file is opened for writing and O_TRUNC is set, write a BOM to
 878  *  the opened file and leave the file pointer set after the BOM.
 879  */
 880 #define BOM "\xef\xbb\xbf"
 881 #define BOM_SIZE 3
 882
 883 int open_utf8(const char* pathname, int flags)
 884 {
 885     int fd;
 886     unsigned char bom[BOM_SIZE];
 887
 888     fd = open(pathname, flags);
 889     if(fd < 0)
 890         return fd;
 891
 892     if(flags & (O_TRUNC | O_WRONLY))
 893     {
 894         write(fd, BOM, BOM_SIZE);
 895     }
 896     else
 897     {
 898         read(fd, bom, BOM_SIZE);
 899         /* check for BOM */
 900         if(memcmp(bom, BOM, BOM_SIZE))
 901             lseek(fd, 0, SEEK_SET);
 902     }
 903     return fd;
 904 }
 905
 906
 907 #ifdef HAVE_LCD_COLOR
 908 /*
 909  * Helper function to convert a string of 6 hex digits to a native colour
 910  */
 911
 912 static int hex2dec(int c)
 913 {
 914     return  (((c) >= '0' && ((c) <= '9')) ? (c) - '0' :
 915                                             (toupper(c)) - 'A' + 10);
 916 }
 917
 918 int hex_to_rgb(const char* hex, int* color)
 919 {
 920     int red, green, blue;
 921     int i = 0;
 922
 923     while ((i < 6) && (isxdigit(hex[i])))
 924         i++;
 925
 926     if (i < 6)
 927         return -1;
 928
 929     red = (hex2dec(hex[0]) << 4) | hex2dec(hex[1]);
 930     green = (hex2dec(hex[2]) << 4) | hex2dec(hex[3]);
 931     blue = (hex2dec(hex[4]) << 4) | hex2dec(hex[5]);
 932
 933     *color = LCD_RGBPACK(red,green,blue);
 934
 935     return 0;
 936 }
 937 #endif /* HAVE_LCD_COLOR */
 938
 939 #ifdef HAVE_LCD_BITMAP
 940 /* '0'-'3' are ASCII 0x30 to 0x33 */
 941 #define is0123(x) (((x) & 0xfc) == 0x30)
 942 #if !defined(__PCTOOL__) || defined(CHECKWPS)
 943 bool parse_color(enum screen_type screen, char *text, int *value)
 944 {
 945     (void)text; (void)value; /* silence warnings on mono bitmap */
 946     (void)screen;
 947
 948 #ifdef HAVE_LCD_COLOR
 949     if (screens[screen].depth > 2)
 950     {
 951         if (hex_to_rgb(text, value) < 0)
 952             return false;
 953         else
 954             return true;
 955     }
 956 #endif
 957
 958 #if LCD_DEPTH == 2 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH == 2)
 959     if (screens[screen].depth == 2)
 960     {
 961         if (text[1] != '\0' || !is0123(*text))
 962             return false;
 963         *value = *text - '0';
 964         return true;
 965     }
 966 #endif
 967     return false;
 968 }
 969 #endif /* !defined(__PCTOOL__) || defined(CHECKWPS) */
 970
 971 /* only used in USB HID and set_time screen */
 972 #if defined(USB_ENABLE_HID) || (CONFIG_RTC != 0)
 973 int clamp_value_wrap(int value, int max, int min)
 974 {
 975     if (value > max)
 976         return min;
 977     if (value < min)
 978         return max;
 979     return value;
 980 }
 981 #endif
 982 #endif