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     long msg_id = -1;
 261     int i;
 262
 263     scrobbler_poweroff();
 264
 265 #if CONFIG_CHARGING && !defined(HAVE_POWEROFF_WHILE_CHARGING)
 266     if(!charger_inserted())
 267 #endif
 268     {
 269         bool batt_safe = battery_level_safe();
 270         int audio_stat = audio_status();
 271
 272         FOR_NB_SCREENS(i)
 273         {
 274             screens[i].clear_display();
 275             screens[i].update();
 276         }
 277
 278         if (batt_safe)
 279         {
 280 #ifdef HAVE_TAGCACHE
 281             if (!tagcache_prepare_shutdown())
 282             {
 283                 cancel_shutdown();
 284                 splash(HZ, ID2P(LANG_TAGCACHE_BUSY));
 285                 return false;
 286             }
 287 #endif
 288             if (battery_level() > 10)
 289                 splash(0, str(LANG_SHUTTINGDOWN));
 290             else
 291             {
 292                 msg_id = LANG_WARNING_BATTERY_LOW;
 293                 splashf(0, "%s %s", str(LANG_WARNING_BATTERY_LOW),
 294                                     str(LANG_SHUTTINGDOWN));
 295             }
 296         }
 297         else
 298         {
 299             msg_id = LANG_WARNING_BATTERY_EMPTY;
 300             splashf(0, "%s %s", str(LANG_WARNING_BATTERY_EMPTY),
 301                                 str(LANG_SHUTTINGDOWN));
 302         }
 303
 304         if (global_settings.fade_on_stop
 305             && (audio_stat & AUDIO_STATUS_PLAY))
 306         {
 307             fade(false, false);
 308         }
 309
 310         if (batt_safe) /* do not save on critical battery */
 311         {
 312 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 313             if (audio_stat & AUDIO_STATUS_RECORD)
 314             {
 315                 rec_command(RECORDING_CMD_STOP);
 316                 /* wait for stop to complete */
 317                 while (audio_status() & AUDIO_STATUS_RECORD)
 318                     sleep(1);
 319             }
 320 #endif
 321             bookmark_autobookmark(false);
 322
 323             /* audio_stop_recording == audio_stop for HWCODEC */
 324             audio_stop();
 325
 326             if (callback != NULL)
 327                 callback(parameter);
 328
 329 #if CONFIG_CODEC != SWCODEC
 330             /* wait for audio_stop or audio_stop_recording to complete */
 331             while (audio_status())
 332                 sleep(1);
 333 #endif
 334
 335 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 336             audio_close_recording();
 337 #endif
 338
 339             if(global_settings.talk_menu)
 340             {
 341                 bool enqueue = false;
 342                 if(msg_id != -1)
 343                 {
 344                     talk_id(msg_id, enqueue);
 345                     enqueue = true;
 346                 }
 347                 talk_id(LANG_SHUTTINGDOWN, enqueue);
 348 #if CONFIG_CODEC == SWCODEC
 349                 voice_wait();
 350 #endif
 351             }
 352
 353             system_flush();
 354 #ifdef HAVE_EEPROM_SETTINGS
 355             if (firmware_settings.initialized)
 356             {
 357                 firmware_settings.disk_clean = true;
 358                 firmware_settings.bl_version = 0;
 359                 eeprom_settings_store();
 360             }
 361 #endif
 362         }
 363 #ifdef HAVE_DIRCACHE
 364         else
 365             dircache_disable();
 366 #endif
 367
 368         shutdown_hw();
 369     }
 370     return false;
 371 }
 372
 373 bool list_stop_handler(void)
 374 {
 375     bool ret = false;
 376
 377 #if CONFIG_TUNER
 378     radio_stop();
 379 #endif
 380
 381     /* Stop the music if it is playing */
 382     if(audio_status())
 383     {
 384         if (!global_settings.party_mode)
 385         {
 386             if (global_settings.fade_on_stop)
 387                 fade(false, false);
 388             bookmark_autobookmark(true);
 389             audio_stop();
 390             ret = true;  /* bookmarking can make a refresh necessary */
 391         }
 392     }
 393 #if CONFIG_CHARGING
 394 #if (CONFIG_KEYPAD == RECORDER_PAD) && !defined(HAVE_SW_POWEROFF)
 395     else
 396     {
 397         if (charger_inserted())
 398             charging_splash();
 399         else
 400             shutdown_screen(); /* won't return if shutdown actually happens */
 401
 402         ret = true;  /* screen is dirty, caller needs to refresh */
 403     }
 404 #endif
 405 #ifndef HAVE_POWEROFF_WHILE_CHARGING
 406     {
 407         static long last_off = 0;
 408
 409         if (TIME_BEFORE(current_tick, last_off + HZ/2))
 410         {
 411             if (charger_inserted())
 412             {
 413                 charging_splash();
 414                 ret = true;  /* screen is dirty, caller needs to refresh */
 415             }
 416         }
 417         last_off = current_tick;
 418     }
 419 #endif
 420 #endif /* CONFIG_CHARGING */
 421     return ret;
 422 }
 423
 424 #if CONFIG_CHARGING
 425 static bool waiting_to_resume_play = false;
 426 static long play_resume_tick;
 427
 428 static void car_adapter_mode_processing(bool inserted)
 429 {
 430     if (global_settings.car_adapter_mode)
 431     {
 432         if(inserted)
 433         {
 434             /*
 435              * Just got plugged in, delay & resume if we were playing
 436              */
 437             if (audio_status() & AUDIO_STATUS_PAUSE)
 438             {
 439                 /* delay resume a bit while the engine is cranking */
 440                 play_resume_tick = current_tick + HZ*5;
 441                 waiting_to_resume_play = true;
 442             }
 443         }
 444         else
 445         {
 446             /*
 447              * Just got unplugged, pause if playing
 448              */
 449             if ((audio_status() & AUDIO_STATUS_PLAY) &&
 450                 !(audio_status() & AUDIO_STATUS_PAUSE))
 451             {
 452                 if (global_settings.fade_on_stop)
 453                     fade(false, false);
 454                 else
 455                     audio_pause();
 456             }
 457             waiting_to_resume_play = false;
 458         }
 459     }
 460 }
 461
 462 static void car_adapter_tick(void)
 463 {
 464     if (waiting_to_resume_play)
 465     {
 466         if (TIME_AFTER(current_tick, play_resume_tick))
 467         {
 468             if (audio_status() & AUDIO_STATUS_PAUSE)
 469             {
 470                 queue_broadcast(SYS_CAR_ADAPTER_RESUME, 0);
 471             }
 472             waiting_to_resume_play = false;
 473         }
 474     }
 475 }
 476
 477 void car_adapter_mode_init(void)
 478 {
 479     tick_add_task(car_adapter_tick);
 480 }
 481 #endif
 482
 483 #ifdef HAVE_HEADPHONE_DETECTION
 484 static void unplug_change(bool inserted)
 485 {
 486     static bool headphone_caused_pause = false;
 487
 488     if (global_settings.unplug_mode)
 489     {
 490         int audio_stat = audio_status();
 491         if (inserted)
 492         {
 493             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 494                     headphone_caused_pause &&
 495                     global_settings.unplug_mode > 1 )
 496                 audio_resume();
 497             backlight_on();
 498             headphone_caused_pause = false;
 499         } else {
 500             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 501                     !(audio_stat & AUDIO_STATUS_PAUSE))
 502             {
 503                 headphone_caused_pause = true;
 504                 audio_pause();
 505
 506                 if (global_settings.unplug_rw)
 507                 {
 508                     if (audio_current_track()->elapsed >
 509                             (unsigned long)(global_settings.unplug_rw*1000))
 510                         audio_ff_rewind(audio_current_track()->elapsed -
 511                                 (global_settings.unplug_rw*1000));
 512                     else
 513                         audio_ff_rewind(0);
 514                 }
 515             }
 516         }
 517     }
 518 }
 519 #endif
 520
 521 long default_event_handler_ex(long event, void (*callback)(void *), void *parameter)
 522 {
 523 #if CONFIG_PLATFORM & (PLATFORM_ANDROID|PLATFORM_MAEMO)
 524     static bool resume = false;
 525 #endif
 526
 527     switch(event)
 528     {
 529         case SYS_BATTERY_UPDATE:
 530             if(global_settings.talk_battery_level)
 531             {
 532                 talk_ids(true, VOICE_PAUSE, VOICE_PAUSE,
 533                          LANG_BATTERY_TIME,
 534                          TALK_ID(battery_level(), UNIT_PERCENT),
 535                          VOICE_PAUSE);
 536                 talk_force_enqueue_next();
 537             }
 538             break;
 539         case SYS_USB_CONNECTED:
 540             if (callback != NULL)
 541                 callback(parameter);
 542 #if (CONFIG_STORAGE & STORAGE_MMC)
 543             if (!mmc_touched() ||
 544                 (mmc_remove_request() == SYS_HOTSWAP_EXTRACTED))
 545 #endif
 546             {
 547                 system_flush();
 548 #ifdef BOOTFILE
 549 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 550                 check_bootfile(false); /* gets initial size */
 551 #endif
 552 #endif
 553                 gui_usb_screen_run(false);
 554 #ifdef BOOTFILE
 555 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 556                 check_bootfile(true);
 557 #endif
 558 #endif
 559                 system_restore();
 560             }
 561             return SYS_USB_CONNECTED;
 562
 563         case SYS_POWEROFF:
 564             if (!clean_shutdown(callback, parameter))
 565                 return SYS_POWEROFF;
 566             break;
 567 #if CONFIG_CHARGING
 568         case SYS_CHARGER_CONNECTED:
 569             car_adapter_mode_processing(true);
 570             return SYS_CHARGER_CONNECTED;
 571
 572         case SYS_CHARGER_DISCONNECTED:
 573             car_adapter_mode_processing(false);
 574             /*reset rockbox battery runtime*/
 575             global_status.runtime = 0;
 576             return SYS_CHARGER_DISCONNECTED;
 577
 578         case SYS_CAR_ADAPTER_RESUME:
 579             audio_resume();
 580             return SYS_CAR_ADAPTER_RESUME;
 581 #endif
 582 #ifdef HAVE_HOTSWAP_STORAGE_AS_MAIN
 583         case SYS_FS_CHANGED:
 584         {
 585             /* simple sanity: assume rockbox is on the first hotswappable
 586              * driver, abort out if that one isn't inserted */
 587             int i;
 588             for (i = 0; i < NUM_DRIVES; i++)
 589             {
 590                 if (storage_removable(i) && !storage_present(i))
 591                     return SYS_FS_CHANGED;
 592             }
 593             system_flush();
 594             check_bootfile(true); /* state gotten in main.c:init() */
 595             system_restore();
 596         }
 597             return SYS_FS_CHANGED;
 598 #endif
 599 #ifdef HAVE_HEADPHONE_DETECTION
 600         case SYS_PHONE_PLUGGED:
 601             unplug_change(true);
 602             return SYS_PHONE_PLUGGED;
 603
 604         case SYS_PHONE_UNPLUGGED:
 605             unplug_change(false);
 606             return SYS_PHONE_UNPLUGGED;
 607 #endif
 608 #ifdef IPOD_ACCESSORY_PROTOCOL
 609         case SYS_IAP_PERIODIC:
 610             iap_periodic();
 611             return SYS_IAP_PERIODIC;
 612         case SYS_IAP_HANDLEPKT:
 613             iap_handlepkt();
 614             return SYS_IAP_HANDLEPKT;
 615 #endif
 616 #if CONFIG_PLATFORM & (PLATFORM_ANDROID|PLATFORM_MAEMO)
 617         /* stop playback if we receive a call */
 618         case SYS_CALL_INCOMING:
 619             resume = audio_status() == AUDIO_STATUS_PLAY;
 620             list_stop_handler();
 621             return SYS_CALL_INCOMING;
 622         /* resume playback if needed */
 623         case SYS_CALL_HUNG_UP:
 624             if (resume && playlist_resume() != -1)
 625             {
 626                 playlist_start(global_status.resume_index,
 627                                global_status.resume_offset);
 628             }
 629             resume = false;
 630             return SYS_CALL_HUNG_UP;
 631 #endif
 632 #if (CONFIG_PLATFORM & PLATFORM_HOSTED) && defined(PLATFORM_HAS_VOLUME_CHANGE)
 633         case SYS_VOLUME_CHANGED:
 634         {
 635             int volume = hosted_get_volume();
 636             if (global_settings.volume != volume)
 637                 global_settings.volume = volume;
 638             return 0;
 639         }
 640 #endif
 641 #ifdef HAVE_MULTIMEDIA_KEYS
 642         /* multimedia keys on keyboards, headsets */
 643         case BUTTON_MULTIMEDIA_PLAYPAUSE:
 644         {
 645             int status = audio_status();
 646             if (status & AUDIO_STATUS_PLAY)
 647             {
 648                 if (status & AUDIO_STATUS_PAUSE)
 649                     audio_resume();
 650                 else
 651                     audio_pause();
 652             }
 653             else
 654                 if (playlist_resume() != -1)
 655                 {
 656                     playlist_start(global_status.resume_index,
 657                                    global_status.resume_offset);
 658                 }
 659             return event;
 660         }
 661         case BUTTON_MULTIMEDIA_NEXT:
 662             audio_next();
 663             return event;
 664         case BUTTON_MULTIMEDIA_PREV:
 665             audio_prev();
 666             return event;
 667         case BUTTON_MULTIMEDIA_STOP:
 668             list_stop_handler();
 669             return event;
 670         case BUTTON_MULTIMEDIA_REW:
 671         case BUTTON_MULTIMEDIA_FFWD:
 672             /* not supported yet, needs to be done in the WPS */
 673             return 0;
 674 #endif
 675     }
 676     return 0;
 677 }
 678
 679 long default_event_handler(long event)
 680 {
 681     return default_event_handler_ex(event, NULL, NULL);
 682 }
 683
 684 int show_logo( void )
 685 {
 686 #ifdef HAVE_LCD_BITMAP
 687     char version[32];
 688     int font_h, font_w;
 689
 690     snprintf(version, sizeof(version), "Ver. %s", rbversion);
 691
 692     lcd_clear_display();
 693 #if defined(SANSA_CLIP) || defined(SANSA_CLIPV2) || defined(SANSA_CLIPPLUS)
 694     /* display the logo in the blue area of the screen */
 695     lcd_setfont(FONT_SYSFIXED);
 696     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 697     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 698                0, (unsigned char *)version);
 699     lcd_bitmap(rockboxlogo, 0, 16, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 700 #else
 701     lcd_bitmap(rockboxlogo, 0, 10, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 702     lcd_setfont(FONT_SYSFIXED);
 703     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 704     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 705                LCD_HEIGHT-font_h, (unsigned char *)version);
 706 #endif
 707     lcd_setfont(FONT_UI);
 708
 709 #else
 710     char *rockbox = "  ROCKbox!";
 711
 712     lcd_clear_display();
 713     lcd_double_height(true);
 714     lcd_puts(0, 0, rockbox);
 715     lcd_puts_scroll(0, 1, rbversion);
 716 #endif
 717     lcd_update();
 718
 719 #ifdef HAVE_REMOTE_LCD
 720     lcd_remote_clear_display();
 721     lcd_remote_bitmap(remote_rockboxlogo, 0, 10, BMPWIDTH_remote_rockboxlogo,
 722                       BMPHEIGHT_remote_rockboxlogo);
 723     lcd_remote_setfont(FONT_SYSFIXED);
 724     lcd_remote_getstringsize((unsigned char *)"A", &font_w, &font_h);
 725     lcd_remote_putsxy((LCD_REMOTE_WIDTH/2) - ((strlen(version)*font_w)/2),
 726                        LCD_REMOTE_HEIGHT-font_h, (unsigned char *)version);
 727     lcd_remote_setfont(FONT_UI);
 728     lcd_remote_update();
 729 #endif
 730
 731     return 0;
 732 }
 733
 734 #ifdef BOOTFILE
 735 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF) || defined(HAVE_HOTSWAP_STORAGE_AS_MAIN)
 736 /*
 737     memorize/compare details about the BOOTFILE
 738     we don't use dircache because it may not be up to date after
 739     USB disconnect (scanning in the background)
 740 */
 741 void check_bootfile(bool do_rolo)
 742 {
 743     static unsigned short wrtdate = 0;
 744     static unsigned short wrttime = 0;
 745     DIR* dir = NULL;
 746     struct dirent* entry = NULL;
 747
 748     /* 1. open BOOTDIR and find the BOOTFILE dir entry */
 749     dir = opendir(BOOTDIR);
 750
 751     if(!dir) return; /* do we want an error splash? */
 752
 753     /* loop all files in BOOTDIR */
 754     while(0 != (entry = readdir(dir)))
 755     {
 756         if(!strcasecmp(entry->d_name, BOOTFILE))
 757         {
 758             struct dirinfo info = dir_get_info(dir, entry);
 759             /* found the bootfile */
 760             if(wrtdate && do_rolo)
 761             {
 762                 if((info.wrtdate != wrtdate) ||
 763                    (info.wrttime != wrttime))
 764                 {
 765                     static const char *lines[] = { ID2P(LANG_BOOT_CHANGED),
 766                                                    ID2P(LANG_REBOOT_NOW) };
 767                     static const struct text_message message={ lines, 2 };
 768                     button_clear_queue(); /* Empty the keyboard buffer */
 769                     if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES)
 770                         rolo_load(BOOTDIR "/" BOOTFILE);
 771                 }
 772             }
 773             wrtdate = info.wrtdate;
 774             wrttime = info.wrttime;
 775         }
 776     }
 777     closedir(dir);
 778 }
 779 #endif
 780 #endif
 781
 782 /* check range, set volume and save settings */
 783 void setvol(void)
 784 {
 785     const int min_vol = sound_min(SOUND_VOLUME);
 786     const int max_vol = sound_max(SOUND_VOLUME);
 787     if (global_settings.volume < min_vol)
 788         global_settings.volume = min_vol;
 789     if (global_settings.volume > max_vol)
 790         global_settings.volume = max_vol;
 791     sound_set_volume(global_settings.volume);
 792     global_status.last_volume_change = current_tick;
 793     settings_save();
 794 }
 795
 796 char* strrsplt(char* str, int c)
 797 {
 798     char* s = strrchr(str, c);
 799
 800     if (s != NULL)
 801     {
 802         *s++ = '\0';
 803     }
 804     else
 805     {
 806         s = str;
 807     }
 808
 809     return s;
 810 }
 811
 812 /*
 813  * removes the extension of filename (if it doesn't start with a .)
 814  * puts the result in buffer
 815  */
 816 char *strip_extension(char* buffer, int buffer_size, const char *filename)
 817 {
 818     char *dot = strrchr(filename, '.');
 819     int len;
 820
 821     if (buffer_size <= 0)
 822     {
 823         return NULL;
 824     }
 825
 826     buffer_size--;  /* Make room for end nil */
 827
 828     if (dot != 0 && filename[0] != '.')
 829     {
 830         len = dot - filename;
 831         len = MIN(len, buffer_size);
 832     }
 833     else
 834     {
 835         len = buffer_size;
 836     }
 837
 838     strlcpy(buffer, filename, len + 1);
 839
 840     return buffer;
 841 }
 842 #endif /* !defined(__PCTOOL__) */
 843
 844 /* Read (up to) a line of text from fd into buffer and return number of bytes
 845  * read (which may be larger than the number of bytes stored in buffer). If
 846  * an error occurs, -1 is returned (and buffer contains whatever could be
 847  * read). A line is terminated by a LF char. Neither LF nor CR chars are
 848  * stored in buffer.
 849  */
 850 int read_line(int fd, char* buffer, int buffer_size)
 851 {
 852     int count = 0;
 853     int num_read = 0;
 854
 855     errno = 0;
 856
 857     while (count < buffer_size)
 858     {
 859         unsigned char c;
 860
 861         if (1 != read(fd, &c, 1))
 862             break;
 863
 864         num_read++;
 865
 866         if ( c == '\n' )
 867             break;
 868
 869         if ( c == '\r' )
 870             continue;
 871
 872         buffer[count++] = c;
 873     }
 874
 875     buffer[MIN(count, buffer_size - 1)] = 0;
 876
 877     return errno ? -1 : num_read;
 878 }
 879
 880
 881 char* skip_whitespace(char* const str)
 882 {
 883     char *s = str;
 884
 885     while (isspace(*s))
 886         s++;
 887
 888     return s;
 889 }
 890
 891 /* Format time into buf.
 892  *
 893  * buf      - buffer to format to.
 894  * buf_size - size of buffer.
 895  * t        - time to format, in milliseconds.
 896  */
 897 void format_time(char* buf, int buf_size, long t)
 898 {
 899     int const time = abs(t / 1000);
 900     int const hours = time / 3600;
 901     int const minutes = time / 60 - hours * 60;
 902     int const seconds = time % 60;
 903     const char * const sign = &"-"[t < 0 ? 0 : 1];
 904
 905     if ( hours == 0 )
 906     {
 907         snprintf(buf, buf_size, "%s%d:%02d", sign, minutes, seconds);
 908     }
 909     else
 910     {
 911         snprintf(buf, buf_size, "%s%d:%02d:%02d", sign, hours, minutes,
 912                  seconds);
 913     }
 914 }
 915
 916
 917 /** Open a UTF-8 file and set file descriptor to first byte after BOM.
 918  *  If no BOM is present this behaves like open().
 919  *  If the file is opened for writing and O_TRUNC is set, write a BOM to
 920  *  the opened file and leave the file pointer set after the BOM.
 921  */
 922 #define BOM "\xef\xbb\xbf"
 923 #define BOM_SIZE 3
 924
 925 int open_utf8(const char* pathname, int flags)
 926 {
 927     int fd;
 928     unsigned char bom[BOM_SIZE];
 929
 930     fd = open(pathname, flags, 0666);
 931     if(fd < 0)
 932         return fd;
 933
 934     if(flags & (O_TRUNC | O_WRONLY))
 935     {
 936         write(fd, BOM, BOM_SIZE);
 937     }
 938     else
 939     {
 940         read(fd, bom, BOM_SIZE);
 941         /* check for BOM */
 942         if(memcmp(bom, BOM, BOM_SIZE))
 943             lseek(fd, 0, SEEK_SET);
 944     }
 945     return fd;
 946 }
 947
 948
 949 #ifdef HAVE_LCD_COLOR
 950 /*
 951  * Helper function to convert a string of 6 hex digits to a native colour
 952  */
 953
 954 static int hex2dec(int c)
 955 {
 956     return  (((c) >= '0' && ((c) <= '9')) ? (c) - '0' :
 957                                             (toupper(c)) - 'A' + 10);
 958 }
 959
 960 int hex_to_rgb(const char* hex, int* color)
 961 {
 962     int red, green, blue;
 963     int i = 0;
 964
 965     while ((i < 6) && (isxdigit(hex[i])))
 966         i++;
 967
 968     if (i < 6)
 969         return -1;
 970
 971     red = (hex2dec(hex[0]) << 4) | hex2dec(hex[1]);
 972     green = (hex2dec(hex[2]) << 4) | hex2dec(hex[3]);
 973     blue = (hex2dec(hex[4]) << 4) | hex2dec(hex[5]);
 974
 975     *color = LCD_RGBPACK(red,green,blue);
 976
 977     return 0;
 978 }
 979 #endif /* HAVE_LCD_COLOR */
 980
 981 #ifdef HAVE_LCD_BITMAP
 982 /* '0'-'3' are ASCII 0x30 to 0x33 */
 983 #define is0123(x) (((x) & 0xfc) == 0x30)
 984 #if !defined(__PCTOOL__) || defined(CHECKWPS)
 985 bool parse_color(enum screen_type screen, char *text, int *value)
 986 {
 987     (void)text; (void)value; /* silence warnings on mono bitmap */
 988     (void)screen;
 989
 990 #ifdef HAVE_LCD_COLOR
 991     if (screens[screen].depth > 2)
 992     {
 993         if (hex_to_rgb(text, value) < 0)
 994             return false;
 995         else
 996             return true;
 997     }
 998 #endif
 999
1000 #if LCD_DEPTH == 2 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH == 2)
1001     if (screens[screen].depth == 2)
1002     {
1003         if (text[1] != '\0' || !is0123(*text))
1004             return false;
1005         *value = *text - '0';
1006         return true;
1007     }
1008 #endif
1009     return false;
1010 }
1011 #endif /* !defined(__PCTOOL__) || defined(CHECKWPS) */
1012
1013 /* only used in USB HID and set_time screen */
1014 #if defined(USB_ENABLE_HID) || (CONFIG_RTC != 0)
1015 int clamp_value_wrap(int value, int max, int min)
1016 {
1017     if (value > max)
1018         return min;
1019     if (value < min)
1020         return max;
1021     return value;
1022 }
1023 #endif
1024 #endif