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 #ifdef IPOD_ACCESSORY_PROTOCOL
  61 #include "iap.h"
  62 #endif
  63
  64 #if (CONFIG_STORAGE & STORAGE_MMC)
  65 #include "ata_mmc.h"
  66 #endif
  67 #include "tree.h"
  68 #include "eeprom_settings.h"
  69 #if defined(HAVE_RECORDING) && !defined(__PCTOOL__)
  70 #include "recording.h"
  71 #endif
  72 #if defined(HAVE_LCD_BITMAP) && !defined(__PCTOOL__)
  73 #include "bmp.h"
  74 #include "icons.h"
  75 #endif /* End HAVE_LCD_BITMAP */
  76 #include "bookmark.h"
  77 #include "wps.h"
  78 #include "playback.h"
  79
  80 #ifdef BOOTFILE
  81 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF) \
  82         || defined(HAVE_HOTSWAP_STORAGE_AS_MAIN)
  83 #include "rolo.h"
  84 #endif
  85 #endif
  86
  87 /* units used with output_dyn_value */
  88 const unsigned char * const byte_units[] =
  89 {
  90     ID2P(LANG_BYTE),
  91     ID2P(LANG_KILOBYTE),
  92     ID2P(LANG_MEGABYTE),
  93     ID2P(LANG_GIGABYTE)
  94 };
  95
  96 const unsigned char * const * const kbyte_units = &byte_units[1];
  97
  98 /* Format a large-range value for output, using the appropriate unit so that
  99  * the displayed value is in the range 1 <= display < 1000 (1024 for "binary"
 100  * units) if possible, and 3 significant digits are shown. If a buffer is
 101  * given, the result is snprintf()'d into that buffer, otherwise the result is
 102  * voiced.*/
 103 char *output_dyn_value(char *buf, int buf_size, int value,
 104                        const unsigned char * const *units, bool bin_scale)
 105 {
 106     int scale = bin_scale ? 1024 : 1000;
 107     int fraction = 0;
 108     int unit_no = 0;
 109     char tbuf[5];
 110
 111     while (value >= scale)
 112     {
 113         fraction = value % scale;
 114         value /= scale;
 115         unit_no++;
 116     }
 117     if (bin_scale)
 118         fraction = fraction * 1000 / 1024;
 119
 120     if (value >= 100 || !unit_no)
 121         tbuf[0] = '\0';
 122     else if (value >= 10)
 123         snprintf(tbuf, sizeof(tbuf), "%01d", fraction / 100);
 124     else
 125         snprintf(tbuf, sizeof(tbuf), "%02d", fraction / 10);
 126
 127     if (buf)
 128     {
 129         if (*tbuf)
 130             snprintf(buf, buf_size, "%d%s%s%s", value, str(LANG_POINT),
 131                      tbuf, P2STR(units[unit_no]));
 132         else
 133             snprintf(buf, buf_size, "%d%s", value, P2STR(units[unit_no]));
 134     }
 135     else
 136     {
 137         talk_fractional(tbuf, value, P2ID(units[unit_no]));
 138     }
 139     return buf;
 140 }
 141
 142 /* Ask the user if they really want to erase the current dynamic playlist
 143  * returns true if the playlist should be replaced */
 144 bool warn_on_pl_erase(void)
 145 {
 146     if (global_settings.warnon_erase_dynplaylist &&
 147         !global_settings.party_mode &&
 148         playlist_modified(NULL))
 149     {
 150         static const char *lines[] =
 151             {ID2P(LANG_WARN_ERASEDYNPLAYLIST_PROMPT)};
 152         static const struct text_message message={lines, 1};
 153
 154         return (gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES);
 155     }
 156     else
 157         return true;
 158 }
 159
 160
 161 /* Performance optimized version of the read_line() (see below) function. */
 162 int fast_readline(int fd, char *buf, int buf_size, void *parameters,
 163                   int (*callback)(int n, const char *buf, void *parameters))
 164 {
 165     char *p, *next;
 166     int rc, pos = 0;
 167     int count = 0;
 168
 169     while ( 1 )
 170     {
 171         next = NULL;
 172
 173         rc = read(fd, &buf[pos], buf_size - pos - 1);
 174         if (rc >= 0)
 175             buf[pos+rc] = '\0';
 176
 177         if ( (p = strchr(buf, '\r')) != NULL)
 178         {
 179             *p = '\0';
 180             next = ++p;
 181         }
 182         else
 183             p = buf;
 184
 185         if ( (p = strchr(p, '\n')) != NULL)
 186         {
 187             *p = '\0';
 188             next = ++p;
 189         }
 190
 191         rc = callback(count, buf, parameters);
 192         if (rc < 0)
 193             return rc;
 194
 195         count++;
 196         if (next)
 197         {
 198             pos = buf_size - ((long)next - (long)buf) - 1;
 199             memmove(buf, next, pos);
 200         }
 201         else
 202             break ;
 203     }
 204
 205     return 0;
 206 }
 207
 208 /* parse a line from a configuration file. the line format is:
 209
 210    name: value
 211
 212    Any whitespace before setting name or value (after ':') is ignored.
 213    A # as first non-whitespace character discards the whole line.
 214    Function sets pointers to null-terminated setting name and value.
 215    Returns false if no valid config entry was found.
 216 */
 217
 218 bool settings_parseline(char* line, char** name, char** value)
 219 {
 220     char* ptr;
 221
 222     line = skip_whitespace(line);
 223
 224     if ( *line == '#' )
 225         return false;
 226
 227     ptr = strchr(line, ':');
 228     if ( !ptr )
 229         return false;
 230
 231     *name = line;
 232     *ptr = 0;
 233     ptr++;
 234     ptr = skip_whitespace(ptr);
 235     *value = ptr;
 236     return true;
 237 }
 238
 239 static void system_flush(void)
 240 {
 241     scrobbler_shutdown();
 242     playlist_shutdown();
 243     tree_flush();
 244     call_storage_idle_notifys(true); /*doesnt work on usb and shutdown from ata thread */
 245 }
 246
 247 static void system_restore(void)
 248 {
 249     tree_restore();
 250     scrobbler_init();
 251 }
 252
 253 static bool clean_shutdown(void (*callback)(void *), void *parameter)
 254 {
 255 #if (CONFIG_PLATFORM & PLATFORM_HOSTED)
 256     (void)callback;
 257     (void)parameter;
 258     bookmark_autobookmark(false);
 259     call_storage_idle_notifys(true);
 260 #else
 261     long msg_id = -1;
 262     int i;
 263
 264     scrobbler_poweroff();
 265
 266 #if CONFIG_CHARGING && !defined(HAVE_POWEROFF_WHILE_CHARGING)
 267     if(!charger_inserted())
 268 #endif
 269     {
 270         bool batt_safe = battery_level_safe();
 271         int audio_stat = audio_status();
 272
 273         FOR_NB_SCREENS(i)
 274         {
 275             screens[i].clear_display();
 276             screens[i].update();
 277         }
 278
 279         if (batt_safe)
 280         {
 281 #ifdef HAVE_TAGCACHE
 282             if (!tagcache_prepare_shutdown())
 283             {
 284                 cancel_shutdown();
 285                 splash(HZ, ID2P(LANG_TAGCACHE_BUSY));
 286                 return false;
 287             }
 288 #endif
 289             if (battery_level() > 10)
 290                 splash(0, str(LANG_SHUTTINGDOWN));
 291             else
 292             {
 293                 msg_id = LANG_WARNING_BATTERY_LOW;
 294                 splashf(0, "%s %s", str(LANG_WARNING_BATTERY_LOW),
 295                                     str(LANG_SHUTTINGDOWN));
 296             }
 297         }
 298         else
 299         {
 300             msg_id = LANG_WARNING_BATTERY_EMPTY;
 301             splashf(0, "%s %s", str(LANG_WARNING_BATTERY_EMPTY),
 302                                 str(LANG_SHUTTINGDOWN));
 303         }
 304
 305         if (global_settings.fade_on_stop
 306             && (audio_stat & AUDIO_STATUS_PLAY))
 307         {
 308             fade(false, false);
 309         }
 310
 311         if (batt_safe) /* do not save on critical battery */
 312         {
 313 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 314             if (audio_stat & AUDIO_STATUS_RECORD)
 315             {
 316                 rec_command(RECORDING_CMD_STOP);
 317                 /* wait for stop to complete */
 318                 while (audio_status() & AUDIO_STATUS_RECORD)
 319                     sleep(1);
 320             }
 321 #endif
 322             bookmark_autobookmark(false);
 323
 324             /* audio_stop_recording == audio_stop for HWCODEC */
 325             audio_stop();
 326
 327             if (callback != NULL)
 328                 callback(parameter);
 329
 330 #if CONFIG_CODEC != SWCODEC
 331             /* wait for audio_stop or audio_stop_recording to complete */
 332             while (audio_status())
 333                 sleep(1);
 334 #endif
 335
 336 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 337             audio_close_recording();
 338 #endif
 339
 340             if(global_settings.talk_menu)
 341             {
 342                 bool enqueue = false;
 343                 if(msg_id != -1)
 344                 {
 345                     talk_id(msg_id, enqueue);
 346                     enqueue = true;
 347                 }
 348                 talk_id(LANG_SHUTTINGDOWN, enqueue);
 349 #if CONFIG_CODEC == SWCODEC
 350                 voice_wait();
 351 #endif
 352             }
 353
 354             system_flush();
 355 #ifdef HAVE_EEPROM_SETTINGS
 356             if (firmware_settings.initialized)
 357             {
 358                 firmware_settings.disk_clean = true;
 359                 firmware_settings.bl_version = 0;
 360                 eeprom_settings_store();
 361             }
 362 #endif
 363         }
 364 #ifdef HAVE_DIRCACHE
 365         else
 366             dircache_disable();
 367 #endif
 368
 369         shutdown_hw();
 370     }
 371 #endif
 372     return false;
 373 }
 374
 375 bool list_stop_handler(void)
 376 {
 377     bool ret = false;
 378
 379     /* Stop the music if it is playing */
 380     if(audio_status())
 381     {
 382         if (!global_settings.party_mode)
 383         {
 384             if (global_settings.fade_on_stop)
 385                 fade(false, false);
 386             bookmark_autobookmark(true);
 387             audio_stop();
 388             ret = true;  /* bookmarking can make a refresh necessary */
 389         }
 390     }
 391 #if CONFIG_CHARGING
 392 #if (CONFIG_KEYPAD == RECORDER_PAD) && !defined(HAVE_SW_POWEROFF)
 393     else
 394     {
 395         if (charger_inserted())
 396             charging_splash();
 397         else
 398             shutdown_screen(); /* won't return if shutdown actually happens */
 399
 400         ret = true;  /* screen is dirty, caller needs to refresh */
 401     }
 402 #endif
 403 #ifndef HAVE_POWEROFF_WHILE_CHARGING
 404     {
 405         static long last_off = 0;
 406
 407         if (TIME_BEFORE(current_tick, last_off + HZ/2))
 408         {
 409             if (charger_inserted())
 410             {
 411                 charging_splash();
 412                 ret = true;  /* screen is dirty, caller needs to refresh */
 413             }
 414         }
 415         last_off = current_tick;
 416     }
 417 #endif
 418 #endif /* CONFIG_CHARGING */
 419     return ret;
 420 }
 421
 422 #if CONFIG_CHARGING
 423 static bool waiting_to_resume_play = false;
 424 static long play_resume_tick;
 425
 426 static void car_adapter_mode_processing(bool inserted)
 427 {
 428     if (global_settings.car_adapter_mode)
 429     {
 430         if(inserted)
 431         {
 432             /*
 433              * Just got plugged in, delay & resume if we were playing
 434              */
 435             if (audio_status() & AUDIO_STATUS_PAUSE)
 436             {
 437                 /* delay resume a bit while the engine is cranking */
 438                 play_resume_tick = current_tick + HZ*5;
 439                 waiting_to_resume_play = true;
 440             }
 441         }
 442         else
 443         {
 444             /*
 445              * Just got unplugged, pause if playing
 446              */
 447             if ((audio_status() & AUDIO_STATUS_PLAY) &&
 448                 !(audio_status() & AUDIO_STATUS_PAUSE))
 449             {
 450                 if (global_settings.fade_on_stop)
 451                     fade(false, false);
 452                 else
 453                     audio_pause();
 454             }
 455             waiting_to_resume_play = false;
 456         }
 457     }
 458 }
 459
 460 static void car_adapter_tick(void)
 461 {
 462     if (waiting_to_resume_play)
 463     {
 464         if (TIME_AFTER(current_tick, play_resume_tick))
 465         {
 466             if (audio_status() & AUDIO_STATUS_PAUSE)
 467             {
 468                 queue_broadcast(SYS_CAR_ADAPTER_RESUME, 0);
 469             }
 470             waiting_to_resume_play = false;
 471         }
 472     }
 473 }
 474
 475 void car_adapter_mode_init(void)
 476 {
 477     tick_add_task(car_adapter_tick);
 478 }
 479 #endif
 480
 481 #ifdef HAVE_HEADPHONE_DETECTION
 482 static void unplug_change(bool inserted)
 483 {
 484     static bool headphone_caused_pause = false;
 485
 486     if (global_settings.unplug_mode)
 487     {
 488         int audio_stat = audio_status();
 489         if (inserted)
 490         {
 491             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 492                     headphone_caused_pause &&
 493                     global_settings.unplug_mode > 1 )
 494                 audio_resume();
 495             backlight_on();
 496             headphone_caused_pause = false;
 497         } else {
 498             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 499                     !(audio_stat & AUDIO_STATUS_PAUSE))
 500             {
 501                 headphone_caused_pause = true;
 502                 audio_pause();
 503
 504                 if (global_settings.unplug_rw)
 505                 {
 506                     if (audio_current_track()->elapsed >
 507                             (unsigned long)(global_settings.unplug_rw*1000))
 508                         audio_ff_rewind(audio_current_track()->elapsed -
 509                                 (global_settings.unplug_rw*1000));
 510                     else
 511                         audio_ff_rewind(0);
 512                 }
 513             }
 514         }
 515     }
 516 }
 517 #endif
 518
 519 long default_event_handler_ex(long event, void (*callback)(void *), void *parameter)
 520 {
 521 #if CONFIG_PLATFORM & PLATFORM_ANDROID
 522     static bool resume = false;
 523 #endif
 524     switch(event)
 525     {
 526         case SYS_BATTERY_UPDATE:
 527             if(global_settings.talk_battery_level)
 528             {
 529                 talk_ids(true, VOICE_PAUSE, VOICE_PAUSE,
 530                          LANG_BATTERY_TIME,
 531                          TALK_ID(battery_level(), UNIT_PERCENT),
 532                          VOICE_PAUSE);
 533                 talk_force_enqueue_next();
 534             }
 535             break;
 536         case SYS_USB_CONNECTED:
 537             if (callback != NULL)
 538                 callback(parameter);
 539 #if (CONFIG_STORAGE & STORAGE_MMC)
 540             if (!mmc_touched() ||
 541                 (mmc_remove_request() == SYS_HOTSWAP_EXTRACTED))
 542 #endif
 543             {
 544                 system_flush();
 545 #ifdef BOOTFILE
 546 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 547                 check_bootfile(false); /* gets initial size */
 548 #endif
 549 #endif
 550                 gui_usb_screen_run(false);
 551 #ifdef BOOTFILE
 552 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 553                 check_bootfile(true);
 554 #endif
 555 #endif
 556                 system_restore();
 557             }
 558             return SYS_USB_CONNECTED;
 559
 560         case SYS_POWEROFF:
 561             if (!clean_shutdown(callback, parameter))
 562                 return SYS_POWEROFF;
 563             break;
 564 #if CONFIG_CHARGING
 565         case SYS_CHARGER_CONNECTED:
 566             car_adapter_mode_processing(true);
 567             return SYS_CHARGER_CONNECTED;
 568
 569         case SYS_CHARGER_DISCONNECTED:
 570             car_adapter_mode_processing(false);
 571             /*reset rockbox battery runtime*/
 572             global_status.runtime = 0;
 573             return SYS_CHARGER_DISCONNECTED;
 574
 575         case SYS_CAR_ADAPTER_RESUME:
 576             audio_resume();
 577             return SYS_CAR_ADAPTER_RESUME;
 578 #endif
 579 #ifdef HAVE_HOTSWAP_STORAGE_AS_MAIN
 580         case SYS_FS_CHANGED:
 581         {
 582             /* simple sanity: assume rockbox is on the first hotswappable
 583              * driver, abort out if that one isn't inserted */
 584             int i;
 585             for (i = 0; i < NUM_DRIVES; i++)
 586             {
 587                 if (storage_removable(i) && !storage_present(i))
 588                     return SYS_FS_CHANGED;
 589             }
 590             system_flush();
 591             check_bootfile(true); /* state gotten in main.c:init() */
 592             system_restore();
 593         }
 594             return SYS_FS_CHANGED;
 595 #endif
 596 #ifdef HAVE_HEADPHONE_DETECTION
 597         case SYS_PHONE_PLUGGED:
 598             unplug_change(true);
 599             return SYS_PHONE_PLUGGED;
 600
 601         case SYS_PHONE_UNPLUGGED:
 602             unplug_change(false);
 603             return SYS_PHONE_UNPLUGGED;
 604 #endif
 605 #ifdef IPOD_ACCESSORY_PROTOCOL
 606         case SYS_IAP_PERIODIC:
 607             iap_periodic();
 608             return SYS_IAP_PERIODIC;
 609         case SYS_IAP_HANDLEPKT:
 610             iap_handlepkt();
 611             return SYS_IAP_HANDLEPKT;
 612 #endif
 613 #if CONFIG_PLATFORM & PLATFORM_ANDROID
 614         /* stop playback if we receive a call */
 615         case SYS_CALL_INCOMING:
 616             resume = (audio_status() & AUDIO_STATUS_PLAY) != 0;
 617             list_stop_handler();
 618             return SYS_CALL_INCOMING;
 619         /* resume playback if needed */
 620         case SYS_CALL_HUNG_UP:
 621             if (resume && playlist_resume() != -1)
 622             {
 623                 playlist_start(global_status.resume_index,
 624                     global_status.resume_offset);
 625             }
 626             resume = false;
 627             return SYS_CALL_HUNG_UP;
 628 #endif
 629     }
 630     return 0;
 631 }
 632
 633 long default_event_handler(long event)
 634 {
 635     return default_event_handler_ex(event, NULL, NULL);
 636 }
 637
 638 int show_logo( void )
 639 {
 640 #ifdef HAVE_LCD_BITMAP
 641     char version[32];
 642     int font_h, font_w;
 643
 644     snprintf(version, sizeof(version), "Ver. %s", rbversion);
 645
 646     lcd_clear_display();
 647 #if defined(SANSA_CLIP) || defined(SANSA_CLIPV2) || defined(SANSA_CLIPPLUS)
 648     /* display the logo in the blue area of the screen */
 649     lcd_setfont(FONT_SYSFIXED);
 650     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 651     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 652                0, (unsigned char *)version);
 653     lcd_bitmap(rockboxlogo, 0, 16, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 654 #else
 655     lcd_bitmap(rockboxlogo, 0, 10, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 656     lcd_setfont(FONT_SYSFIXED);
 657     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 658     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 659                LCD_HEIGHT-font_h, (unsigned char *)version);
 660 #endif
 661     lcd_setfont(FONT_UI);
 662
 663 #else
 664     char *rockbox = "  ROCKbox!";
 665
 666     lcd_clear_display();
 667     lcd_double_height(true);
 668     lcd_puts(0, 0, rockbox);
 669     lcd_puts_scroll(0, 1, rbversion);
 670 #endif
 671     lcd_update();
 672
 673 #ifdef HAVE_REMOTE_LCD
 674     lcd_remote_clear_display();
 675     lcd_remote_bitmap(remote_rockboxlogo, 0, 10, BMPWIDTH_remote_rockboxlogo,
 676                       BMPHEIGHT_remote_rockboxlogo);
 677     lcd_remote_setfont(FONT_SYSFIXED);
 678     lcd_remote_getstringsize((unsigned char *)"A", &font_w, &font_h);
 679     lcd_remote_putsxy((LCD_REMOTE_WIDTH/2) - ((strlen(version)*font_w)/2),
 680                        LCD_REMOTE_HEIGHT-font_h, (unsigned char *)version);
 681     lcd_remote_setfont(FONT_UI);
 682     lcd_remote_update();
 683 #endif
 684
 685     return 0;
 686 }
 687
 688 #ifdef BOOTFILE
 689 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF) || defined(HAVE_HOTSWAP_STORAGE_AS_MAIN)
 690 /*
 691     memorize/compare details about the BOOTFILE
 692     we don't use dircache because it may not be up to date after
 693     USB disconnect (scanning in the background)
 694 */
 695 void check_bootfile(bool do_rolo)
 696 {
 697     static unsigned short wrtdate = 0;
 698     static unsigned short wrttime = 0;
 699     DIR* dir = NULL;
 700     struct dirent* entry = NULL;
 701
 702     /* 1. open BOOTDIR and find the BOOTFILE dir entry */
 703     dir = opendir(BOOTDIR);
 704
 705     if(!dir) return; /* do we want an error splash? */
 706
 707     /* loop all files in BOOTDIR */
 708     while(0 != (entry = readdir(dir)))
 709     {
 710         if(!strcasecmp(entry->d_name, BOOTFILE))
 711         {
 712             struct dirinfo info = dir_get_info(dir, entry);
 713             /* found the bootfile */
 714             if(wrtdate && do_rolo)
 715             {
 716                 if((info.wrtdate != wrtdate) ||
 717                    (info.wrttime != wrttime))
 718                 {
 719                     static const char *lines[] = { ID2P(LANG_BOOT_CHANGED),
 720                                                    ID2P(LANG_REBOOT_NOW) };
 721                     static const struct text_message message={ lines, 2 };
 722                     button_clear_queue(); /* Empty the keyboard buffer */
 723                     if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES)
 724                     rolo_load(BOOTDIR "/" BOOTFILE);
 725                 }
 726             }
 727             wrtdate = info.wrtdate;
 728             wrttime = info.wrttime;
 729         }
 730     }
 731     closedir(dir);
 732 }
 733 #endif
 734 #endif
 735
 736 /* check range, set volume and save settings */
 737 void setvol(void)
 738 {
 739     const int min_vol = sound_min(SOUND_VOLUME);
 740     const int max_vol = sound_max(SOUND_VOLUME);
 741     if (global_settings.volume < min_vol)
 742         global_settings.volume = min_vol;
 743     if (global_settings.volume > max_vol)
 744         global_settings.volume = max_vol;
 745     sound_set_volume(global_settings.volume);
 746     global_status.last_volume_change = current_tick;
 747     settings_save();
 748 }
 749
 750 char* strrsplt(char* str, int c)
 751 {
 752     char* s = strrchr(str, c);
 753
 754     if (s != NULL)
 755     {
 756         *s++ = '\0';
 757     }
 758     else
 759     {
 760         s = str;
 761     }
 762
 763     return s;
 764 }
 765
 766 /*
 767  * removes the extension of filename (if it doesn't start with a .)
 768  * puts the result in buffer
 769  */
 770 char *strip_extension(char* buffer, int buffer_size, const char *filename)
 771 {
 772     char *dot = strrchr(filename, '.');
 773     int len;
 774
 775     if (buffer_size <= 0)
 776     {
 777         return NULL;
 778     }
 779
 780     buffer_size--;  /* Make room for end nil */
 781
 782     if (dot != 0 && filename[0] != '.')
 783     {
 784         len = dot - filename;
 785         len = MIN(len, buffer_size);
 786     }
 787     else
 788     {
 789         len = buffer_size;
 790     }
 791
 792     strlcpy(buffer, filename, len + 1);
 793
 794     return buffer;
 795 }
 796 #endif /* !defined(__PCTOOL__) */
 797
 798 /* Read (up to) a line of text from fd into buffer and return number of bytes
 799  * read (which may be larger than the number of bytes stored in buffer). If
 800  * an error occurs, -1 is returned (and buffer contains whatever could be
 801  * read). A line is terminated by a LF char. Neither LF nor CR chars are
 802  * stored in buffer.
 803  */
 804 int read_line(int fd, char* buffer, int buffer_size)
 805 {
 806     int count = 0;
 807     int num_read = 0;
 808
 809     errno = 0;
 810
 811     while (count < buffer_size)
 812     {
 813         unsigned char c;
 814
 815         if (1 != read(fd, &c, 1))
 816             break;
 817
 818         num_read++;
 819
 820         if ( c == '\n' )
 821             break;
 822
 823         if ( c == '\r' )
 824             continue;
 825
 826         buffer[count++] = c;
 827     }
 828
 829     buffer[MIN(count, buffer_size - 1)] = 0;
 830
 831     return errno ? -1 : num_read;
 832 }
 833
 834
 835 char* skip_whitespace(char* const str)
 836 {
 837     char *s = str;
 838
 839     while (isspace(*s))
 840         s++;
 841
 842     return s;
 843 }
 844
 845 /* Format time into buf.
 846  *
 847  * buf      - buffer to format to.
 848  * buf_size - size of buffer.
 849  * t        - time to format, in milliseconds.
 850  */
 851 void format_time(char* buf, int buf_size, long t)
 852 {
 853     if ( t < 3600000 )
 854     {
 855         snprintf(buf, buf_size, "%d:%02d",
 856                  (int) (t / 60000), (int) (t % 60000 / 1000));
 857     }
 858     else
 859     {
 860         snprintf(buf, buf_size, "%d:%02d:%02d",
 861                  (int) (t / 3600000), (int) (t % 3600000 / 60000),
 862                  (int) (t % 60000 / 1000));
 863     }
 864 }
 865
 866
 867 /** Open a UTF-8 file and set file descriptor to first byte after BOM.
 868  *  If no BOM is present this behaves like open().
 869  *  If the file is opened for writing and O_TRUNC is set, write a BOM to
 870  *  the opened file and leave the file pointer set after the BOM.
 871  */
 872 #define BOM "\xef\xbb\xbf"
 873 #define BOM_SIZE 3
 874
 875 int open_utf8(const char* pathname, int flags)
 876 {
 877     int fd;
 878     unsigned char bom[BOM_SIZE];
 879
 880     fd = open(pathname, flags);
 881     if(fd < 0)
 882         return fd;
 883
 884     if(flags & (O_TRUNC | O_WRONLY))
 885     {
 886         write(fd, BOM, BOM_SIZE);
 887     }
 888     else
 889     {
 890         read(fd, bom, BOM_SIZE);
 891         /* check for BOM */
 892         if(memcmp(bom, BOM, BOM_SIZE))
 893             lseek(fd, 0, SEEK_SET);
 894     }
 895     return fd;
 896 }
 897
 898
 899 #ifdef HAVE_LCD_COLOR
 900 /*
 901  * Helper function to convert a string of 6 hex digits to a native colour
 902  */
 903
 904 static int hex2dec(int c)
 905 {
 906     return  (((c) >= '0' && ((c) <= '9')) ? (c) - '0' :
 907                                             (toupper(c)) - 'A' + 10);
 908 }
 909
 910 int hex_to_rgb(const char* hex, int* color)
 911 {
 912     int red, green, blue;
 913     int i = 0;
 914
 915     while ((i < 6) && (isxdigit(hex[i])))
 916         i++;
 917
 918     if (i < 6)
 919         return -1;
 920
 921     red = (hex2dec(hex[0]) << 4) | hex2dec(hex[1]);
 922     green = (hex2dec(hex[2]) << 4) | hex2dec(hex[3]);
 923     blue = (hex2dec(hex[4]) << 4) | hex2dec(hex[5]);
 924
 925     *color = LCD_RGBPACK(red,green,blue);
 926
 927     return 0;
 928 }
 929 #endif /* HAVE_LCD_COLOR */
 930
 931 #ifdef HAVE_LCD_BITMAP
 932 /* '0'-'3' are ASCII 0x30 to 0x33 */
 933 #define is0123(x) (((x) & 0xfc) == 0x30)
 934 #if !defined(__PCTOOL__) || defined(CHECKWPS)
 935 bool parse_color(enum screen_type screen, char *text, int *value)
 936 {
 937     (void)text; (void)value; /* silence warnings on mono bitmap */
 938     (void)screen;
 939
 940 #ifdef HAVE_LCD_COLOR
 941     if (screens[screen].depth > 2)
 942     {
 943         if (hex_to_rgb(text, value) < 0)
 944             return false;
 945         else
 946             return true;
 947     }
 948 #endif
 949
 950 #if LCD_DEPTH == 2 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH == 2)
 951     if (screens[screen].depth == 2)
 952     {
 953         if (text[1] != '\0' || !is0123(*text))
 954             return false;
 955         *value = *text - '0';
 956         return true;
 957     }
 958 #endif
 959     return false;
 960 }
 961 #endif /* !defined(__PCTOOL__) || defined(CHECKWPS) */
 962
 963 /* only used in USB HID and set_time screen */
 964 #if defined(USB_ENABLE_HID) || (CONFIG_RTC != 0)
 965 int clamp_value_wrap(int value, int max, int min)
 966 {
 967     if (value > max)
 968         return min;
 969     if (value < min)
 970         return max;
 971     return value;
 972 }
 973 #endif
 974 #endif