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