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 <string.h>
  24 #include "config.h"
  25 #include "misc.h"
  26 #include "lcd.h"
  27 #include "file.h"
  28 #ifdef __PCTOOL__
  29 #include <stdarg.h>
  30 #include <stdio.h>
  31 #else
  32 #include "sprintf.h"
  33 #include "lang.h"
  34 #include "dir.h"
  35 #include "lcd-remote.h"
  36 #include "errno.h"
  37 #include "system.h"
  38 #include "timefuncs.h"
  39 #include "screens.h"
  40 #include "talk.h"
  41 #include "mpeg.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 #ifdef IPOD_ACCESSORY_PROTOCOL
  62 #include "iap.h"
  63 #endif
  64
  65 #if (CONFIG_STORAGE & STORAGE_MMC)
  66 #include "ata_mmc.h"
  67 #endif
  68 #include "tree.h"
  69 #include "eeprom_settings.h"
  70 #if defined(HAVE_RECORDING) && !defined(__PCTOOL__)
  71 #include "recording.h"
  72 #endif
  73 #if defined(HAVE_LCD_BITMAP) && !defined(__PCTOOL__)
  74 #include "bmp.h"
  75 #include "icons.h"
  76 #endif /* End HAVE_LCD_BITMAP */
  77 #include "bookmark.h"
  78 #include "wps.h"
  79 #include "playback.h"
  80
  81 #ifdef BOOTFILE
  82 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
  83 #include "rolo.h"
  84 #include "yesno.h"
  85 #endif
  86 #endif
  87
  88 /* Format a large-range value for output, using the appropriate unit so that
  89  * the displayed value is in the range 1 <= display < 1000 (1024 for "binary"
  90  * units) if possible, and 3 significant digits are shown. If a buffer is
  91  * given, the result is snprintf()'d into that buffer, otherwise the result is
  92  * voiced.*/
  93 char *output_dyn_value(char *buf, int buf_size, int value,
  94                        const unsigned char **units, bool bin_scale)
  95 {
  96     int scale = bin_scale ? 1024 : 1000;
  97     int fraction = 0;
  98     int unit_no = 0;
  99     char tbuf[5];
 100
 101     while (value >= scale)
 102     {
 103         fraction = value % scale;
 104         value /= scale;
 105         unit_no++;
 106     }
 107     if (bin_scale)
 108         fraction = fraction * 1000 / 1024;
 109
 110     if (value >= 100 || !unit_no)
 111         tbuf[0] = '\0';
 112     else if (value >= 10)
 113         snprintf(tbuf, sizeof(tbuf), "%01d", fraction / 100);
 114     else
 115         snprintf(tbuf, sizeof(tbuf), "%02d", fraction / 10);
 116
 117     if (buf)
 118     {
 119         if (strlen(tbuf))
 120             snprintf(buf, buf_size, "%d%s%s%s", value, str(LANG_POINT),
 121                      tbuf, P2STR(units[unit_no]));
 122         else
 123             snprintf(buf, buf_size, "%d%s", value, P2STR(units[unit_no]));
 124     }
 125     else
 126     {
 127         talk_fractional(tbuf, value, P2ID(units[unit_no]));
 128     }
 129     return buf;
 130 }
 131
 132 /* Ask the user if they really want to erase the current dynamic playlist
 133  * returns true if the playlist should be replaced */
 134 bool warn_on_pl_erase(void)
 135 {
 136     if (global_settings.warnon_erase_dynplaylist &&
 137         !global_settings.party_mode &&
 138         playlist_modified(NULL))
 139     {
 140         static const char *lines[] =
 141             {ID2P(LANG_WARN_ERASEDYNPLAYLIST_PROMPT)};
 142         static const struct text_message message={lines, 1};
 143
 144         return (gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES);
 145     }
 146     else
 147         return true;
 148 }
 149
 150 /* Read (up to) a line of text from fd into buffer and return number of bytes
 151  * read (which may be larger than the number of bytes stored in buffer). If
 152  * an error occurs, -1 is returned (and buffer contains whatever could be
 153  * read). A line is terminated by a LF char. Neither LF nor CR chars are
 154  * stored in buffer.
 155  */
 156 int read_line(int fd, char* buffer, int buffer_size)
 157 {
 158     int count = 0;
 159     int num_read = 0;
 160
 161     errno = 0;
 162
 163     while (count < buffer_size)
 164     {
 165         unsigned char c;
 166
 167         if (1 != read(fd, &c, 1))
 168             break;
 169
 170         num_read++;
 171
 172         if ( c == '\n' )
 173             break;
 174
 175         if ( c == '\r' )
 176             continue;
 177
 178         buffer[count++] = c;
 179     }
 180
 181     buffer[MIN(count, buffer_size - 1)] = 0;
 182
 183     return errno ? -1 : num_read;
 184 }
 185
 186 /* Performance optimized version of the previous function. */
 187 int fast_readline(int fd, char *buf, int buf_size, void *parameters,
 188                   int (*callback)(int n, const char *buf, void *parameters))
 189 {
 190     char *p, *next;
 191     int rc, pos = 0;
 192     int count = 0;
 193
 194     while ( 1 )
 195     {
 196         next = NULL;
 197
 198         rc = read(fd, &buf[pos], buf_size - pos - 1);
 199         if (rc >= 0)
 200             buf[pos+rc] = '\0';
 201
 202         if ( (p = strchr(buf, '\r')) != NULL)
 203         {
 204             *p = '\0';
 205             next = ++p;
 206         }
 207         else
 208             p = buf;
 209
 210         if ( (p = strchr(p, '\n')) != NULL)
 211         {
 212             *p = '\0';
 213             next = ++p;
 214         }
 215
 216         rc = callback(count, buf, parameters);
 217         if (rc < 0)
 218             return rc;
 219
 220         count++;
 221         if (next)
 222         {
 223             pos = buf_size - ((long)next - (long)buf) - 1;
 224             memmove(buf, next, pos);
 225         }
 226         else
 227             break ;
 228     }
 229
 230     return 0;
 231 }
 232
 233 /* parse a line from a configuration file. the line format is:
 234
 235    name: value
 236
 237    Any whitespace before setting name or value (after ':') is ignored.
 238    A # as first non-whitespace character discards the whole line.
 239    Function sets pointers to null-terminated setting name and value.
 240    Returns false if no valid config entry was found.
 241 */
 242
 243 bool settings_parseline(char* line, char** name, char** value)
 244 {
 245     char* ptr;
 246
 247     line = skip_whitespace(line);
 248
 249     if ( *line == '#' )
 250         return false;
 251
 252     ptr = strchr(line, ':');
 253     if ( !ptr )
 254         return false;
 255
 256     *name = line;
 257     *ptr = 0;
 258     ptr++;
 259     ptr = skip_whitespace(ptr);
 260     *value = ptr;
 261     return true;
 262 }
 263
 264 static void system_flush(void)
 265 {
 266     scrobbler_shutdown();
 267     playlist_shutdown();
 268     tree_flush();
 269     call_storage_idle_notifys(true); /*doesnt work on usb and shutdown from ata thread */
 270 }
 271
 272 static void system_restore(void)
 273 {
 274     tree_restore();
 275     scrobbler_init();
 276 }
 277
 278 static bool clean_shutdown(void (*callback)(void *), void *parameter)
 279 {
 280 #ifdef SIMULATOR
 281     (void)callback;
 282     (void)parameter;
 283     bookmark_autobookmark();
 284     call_storage_idle_notifys(true);
 285     exit(0);
 286 #else
 287     long msg_id = -1;
 288     int i;
 289
 290     scrobbler_poweroff();
 291
 292 #if CONFIG_CHARGING && !defined(HAVE_POWEROFF_WHILE_CHARGING)
 293     if(!charger_inserted())
 294 #endif
 295     {
 296         bool batt_safe = battery_level_safe();
 297         int audio_stat = audio_status();
 298
 299         FOR_NB_SCREENS(i)
 300         {
 301             screens[i].clear_display();
 302             screens[i].update();
 303         }
 304
 305         if (batt_safe)
 306         {
 307 #ifdef HAVE_TAGCACHE
 308             if (!tagcache_prepare_shutdown())
 309             {
 310                 cancel_shutdown();
 311                 splash(HZ, ID2P(LANG_TAGCACHE_BUSY));
 312                 return false;
 313             }
 314 #endif
 315             if (battery_level() > 10)
 316                 splash(0, str(LANG_SHUTTINGDOWN));
 317             else
 318             {
 319                 msg_id = LANG_WARNING_BATTERY_LOW;
 320                 splashf(0, "%s %s", str(LANG_WARNING_BATTERY_LOW),
 321                                     str(LANG_SHUTTINGDOWN));
 322             }
 323         }
 324         else
 325         {
 326             msg_id = LANG_WARNING_BATTERY_EMPTY;
 327             splashf(0, "%s %s", str(LANG_WARNING_BATTERY_EMPTY),
 328                                 str(LANG_SHUTTINGDOWN));
 329         }
 330
 331         if (global_settings.fade_on_stop
 332             && (audio_stat & AUDIO_STATUS_PLAY))
 333         {
 334             fade(false, false);
 335         }
 336
 337         if (batt_safe) /* do not save on critical battery */
 338         {
 339 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 340             if (audio_stat & AUDIO_STATUS_RECORD)
 341             {
 342                 rec_command(RECORDING_CMD_STOP);
 343                 /* wait for stop to complete */
 344                 while (audio_status() & AUDIO_STATUS_RECORD)
 345                     sleep(1);
 346             }
 347 #endif
 348             bookmark_autobookmark();
 349
 350             /* audio_stop_recording == audio_stop for HWCODEC */
 351             audio_stop();
 352
 353             if (callback != NULL)
 354                 callback(parameter);
 355
 356 #if CONFIG_CODEC != SWCODEC
 357             /* wait for audio_stop or audio_stop_recording to complete */
 358             while (audio_status())
 359                 sleep(1);
 360 #endif
 361
 362 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 363             audio_close_recording();
 364 #endif
 365
 366             if(global_settings.talk_menu)
 367             {
 368                 bool enqueue = false;
 369                 if(msg_id != -1)
 370                 {
 371                     talk_id(msg_id, enqueue);
 372                     enqueue = true;
 373                 }
 374                 talk_id(LANG_SHUTTINGDOWN, enqueue);
 375 #if CONFIG_CODEC == SWCODEC
 376                 voice_wait();
 377 #endif
 378             }
 379
 380             system_flush();
 381 #ifdef HAVE_EEPROM_SETTINGS
 382             if (firmware_settings.initialized)
 383             {
 384                 firmware_settings.disk_clean = true;
 385                 firmware_settings.bl_version = 0;
 386                 eeprom_settings_store();
 387             }
 388 #endif
 389         }
 390 #ifdef HAVE_DIRCACHE
 391         else
 392             dircache_disable();
 393 #endif
 394
 395         shutdown_hw();
 396     }
 397 #endif
 398     return false;
 399 }
 400
 401 bool list_stop_handler(void)
 402 {
 403     bool ret = false;
 404
 405     /* Stop the music if it is playing */
 406     if(audio_status())
 407     {
 408         if (!global_settings.party_mode)
 409         {
 410             if (global_settings.fade_on_stop)
 411                 fade(false, false);
 412             bookmark_autobookmark();
 413             audio_stop();
 414             ret = true;  /* bookmarking can make a refresh necessary */
 415         }
 416     }
 417 #if CONFIG_CHARGING
 418 #if (CONFIG_KEYPAD == RECORDER_PAD) && !defined(HAVE_SW_POWEROFF)
 419     else
 420     {
 421         if (charger_inserted())
 422             charging_splash();
 423         else
 424             shutdown_screen(); /* won't return if shutdown actually happens */
 425
 426         ret = true;  /* screen is dirty, caller needs to refresh */
 427     }
 428 #endif
 429 #ifndef HAVE_POWEROFF_WHILE_CHARGING
 430     {
 431         static long last_off = 0;
 432
 433         if (TIME_BEFORE(current_tick, last_off + HZ/2))
 434         {
 435             if (charger_inserted())
 436             {
 437                 charging_splash();
 438                 ret = true;  /* screen is dirty, caller needs to refresh */
 439             }
 440         }
 441         last_off = current_tick;
 442     }
 443 #endif
 444 #endif /* CONFIG_CHARGING */
 445     return ret;
 446 }
 447
 448 #if CONFIG_CHARGING
 449 static bool waiting_to_resume_play = false;
 450 static long play_resume_tick;
 451
 452 static void car_adapter_mode_processing(bool inserted)
 453 {
 454     if (global_settings.car_adapter_mode)
 455     {
 456         if(inserted)
 457         {
 458             /*
 459              * Just got plugged in, delay & resume if we were playing
 460              */
 461             if (audio_status() & AUDIO_STATUS_PAUSE)
 462             {
 463                 /* delay resume a bit while the engine is cranking */
 464                 play_resume_tick = current_tick + HZ*5;
 465                 waiting_to_resume_play = true;
 466             }
 467         }
 468         else
 469         {
 470             /*
 471              * Just got unplugged, pause if playing
 472              */
 473             if ((audio_status() & AUDIO_STATUS_PLAY) &&
 474                 !(audio_status() & AUDIO_STATUS_PAUSE))
 475             {
 476                 if (global_settings.fade_on_stop)
 477                     fade(false, false);
 478                 else
 479                     audio_pause();
 480             }
 481             waiting_to_resume_play = false;
 482         }
 483     }
 484 }
 485
 486 static void car_adapter_tick(void)
 487 {
 488     if (waiting_to_resume_play)
 489     {
 490         if (TIME_AFTER(current_tick, play_resume_tick))
 491         {
 492             if (audio_status() & AUDIO_STATUS_PAUSE)
 493             {
 494                 queue_broadcast(SYS_CAR_ADAPTER_RESUME, 0);
 495             }
 496             waiting_to_resume_play = false;
 497         }
 498     }
 499 }
 500
 501 void car_adapter_mode_init(void)
 502 {
 503     tick_add_task(car_adapter_tick);
 504 }
 505 #endif
 506
 507 #ifdef HAVE_HEADPHONE_DETECTION
 508 static void unplug_change(bool inserted)
 509 {
 510     static bool headphone_caused_pause = false;
 511
 512     if (global_settings.unplug_mode)
 513     {
 514         int audio_stat = audio_status();
 515         if (inserted)
 516         {
 517             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 518                     headphone_caused_pause &&
 519                     global_settings.unplug_mode > 1 )
 520                 audio_resume();
 521             backlight_on();
 522             headphone_caused_pause = false;
 523         } else {
 524             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 525                     !(audio_stat & AUDIO_STATUS_PAUSE))
 526             {
 527                 headphone_caused_pause = true;
 528                 audio_pause();
 529
 530                 if (global_settings.unplug_rw)
 531                 {
 532                     if (audio_current_track()->elapsed >
 533                             (unsigned long)(global_settings.unplug_rw*1000))
 534                         audio_ff_rewind(audio_current_track()->elapsed -
 535                                 (global_settings.unplug_rw*1000));
 536                     else
 537                         audio_ff_rewind(0);
 538                 }
 539             }
 540         }
 541     }
 542 }
 543 #endif
 544
 545 long default_event_handler_ex(long event, void (*callback)(void *), void *parameter)
 546 {
 547     switch(event)
 548     {
 549         case SYS_BATTERY_UPDATE:
 550             if(global_settings.talk_battery_level)
 551             {
 552                 talk_ids(true, VOICE_PAUSE, VOICE_PAUSE,
 553                          LANG_BATTERY_TIME,
 554                          TALK_ID(battery_level(), UNIT_PERCENT),
 555                          VOICE_PAUSE);
 556                 talk_force_enqueue_next();
 557             }
 558             break;
 559         case SYS_USB_CONNECTED:
 560             if (callback != NULL)
 561                 callback(parameter);
 562 #if (CONFIG_STORAGE & STORAGE_MMC)
 563             if (!mmc_touched() ||
 564                 (mmc_remove_request() == SYS_HOTSWAP_EXTRACTED))
 565 #endif
 566             {
 567                 system_flush();
 568 #ifdef BOOTFILE
 569 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 570                 check_bootfile(false); /* gets initial size */
 571 #endif
 572 #endif
 573                 usb_screen();
 574 #ifdef BOOTFILE
 575 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 576                 check_bootfile(true);
 577 #endif
 578 #endif
 579                 system_restore();
 580             }
 581             return SYS_USB_CONNECTED;
 582         case SYS_POWEROFF:
 583             if (!clean_shutdown(callback, parameter))
 584                 return SYS_POWEROFF;
 585             break;
 586 #if CONFIG_CHARGING
 587         case SYS_CHARGER_CONNECTED:
 588             car_adapter_mode_processing(true);
 589             return SYS_CHARGER_CONNECTED;
 590
 591         case SYS_CHARGER_DISCONNECTED:
 592             car_adapter_mode_processing(false);
 593             return SYS_CHARGER_DISCONNECTED;
 594
 595         case SYS_CAR_ADAPTER_RESUME:
 596             audio_resume();
 597             return SYS_CAR_ADAPTER_RESUME;
 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     }
 617     return 0;
 618 }
 619
 620 long default_event_handler(long event)
 621 {
 622     return default_event_handler_ex(event, NULL, NULL);
 623 }
 624
 625 int show_logo( void )
 626 {
 627 #ifdef HAVE_LCD_BITMAP
 628     char version[32];
 629     int font_h, font_w;
 630
 631     snprintf(version, sizeof(version), "Ver. %s", appsversion);
 632
 633     lcd_clear_display();
 634 #ifdef SANSA_CLIP   /* display the logo in the blue area of the screen */
 635     lcd_setfont(FONT_SYSFIXED);
 636     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 637     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 638                0, (unsigned char *)version);
 639     lcd_bitmap(rockboxlogo, 0, 16, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 640 #else
 641     lcd_bitmap(rockboxlogo, 0, 10, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 642     lcd_setfont(FONT_SYSFIXED);
 643     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 644     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 645                LCD_HEIGHT-font_h, (unsigned char *)version);
 646 #endif
 647     lcd_setfont(FONT_UI);
 648
 649 #else
 650     char *rockbox = "  ROCKbox!";
 651
 652     lcd_clear_display();
 653     lcd_double_height(true);
 654     lcd_puts(0, 0, rockbox);
 655     lcd_puts_scroll(0, 1, appsversion);
 656 #endif
 657     lcd_update();
 658
 659 #ifdef HAVE_REMOTE_LCD
 660     lcd_remote_clear_display();
 661     lcd_remote_bitmap(remote_rockboxlogo, 0, 10, BMPWIDTH_remote_rockboxlogo,
 662                       BMPHEIGHT_remote_rockboxlogo);
 663     lcd_remote_setfont(FONT_SYSFIXED);
 664     lcd_remote_getstringsize((unsigned char *)"A", &font_w, &font_h);
 665     lcd_remote_putsxy((LCD_REMOTE_WIDTH/2) - ((strlen(version)*font_w)/2),
 666                        LCD_REMOTE_HEIGHT-font_h, (unsigned char *)version);
 667     lcd_remote_setfont(FONT_UI);
 668     lcd_remote_update();
 669 #endif
 670
 671     return 0;
 672 }
 673
 674 #if CONFIG_CODEC == SWCODEC
 675 int get_replaygain_mode(bool have_track_gain, bool have_album_gain)
 676 {
 677     int type;
 678
 679     bool track = ((global_settings.replaygain_type == REPLAYGAIN_TRACK)
 680         || ((global_settings.replaygain_type == REPLAYGAIN_SHUFFLE)
 681             && global_settings.playlist_shuffle));
 682
 683     type = (!track && have_album_gain) ? REPLAYGAIN_ALBUM
 684         : have_track_gain ? REPLAYGAIN_TRACK : -1;
 685
 686     return type;
 687 }
 688 #endif
 689
 690 #ifdef BOOTFILE
 691 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 692 /*
 693     memorize/compare details about the BOOTFILE
 694     we don't use dircache because it may not be up to date after
 695     USB disconnect (scanning in the background)
 696 */
 697 void check_bootfile(bool do_rolo)
 698 {
 699     static unsigned short wrtdate = 0;
 700     static unsigned short wrttime = 0;
 701     DIR* dir = NULL;
 702     struct dirent* entry = NULL;
 703
 704     /* 1. open BOOTDIR and find the BOOTFILE dir entry */
 705     dir = opendir(BOOTDIR);
 706
 707     if(!dir) return; /* do we want an error splash? */
 708
 709     /* loop all files in BOOTDIR */
 710     while(0 != (entry = readdir(dir)))
 711     {
 712         if(!strcasecmp(entry->d_name, BOOTFILE))
 713         {
 714             /* found the bootfile */
 715             if(wrtdate && do_rolo)
 716             {
 717                 if((entry->wrtdate != wrtdate) ||
 718                    (entry->wrttime != wrttime))
 719                 {
 720                     static const char *lines[] = { ID2P(LANG_BOOT_CHANGED),
 721                                                    ID2P(LANG_REBOOT_NOW) };
 722                     static const struct text_message message={ lines, 2 };
 723                     button_clear_queue(); /* Empty the keyboard buffer */
 724                     if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES)
 725                     rolo_load(BOOTDIR "/" BOOTFILE);
 726                 }
 727             }
 728             wrtdate = entry->wrtdate;
 729             wrttime = entry->wrttime;
 730         }
 731     }
 732     closedir(dir);
 733 }
 734 #endif
 735 #endif
 736
 737 /* check range, set volume and save settings */
 738 void setvol(void)
 739 {
 740     const int min_vol = sound_min(SOUND_VOLUME);
 741     const int max_vol = sound_max(SOUND_VOLUME);
 742     if (global_settings.volume < min_vol)
 743         global_settings.volume = min_vol;
 744     if (global_settings.volume > max_vol)
 745         global_settings.volume = max_vol;
 746     sound_set_volume(global_settings.volume);
 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 /* Test file existence, using dircache of possible */
 767 bool file_exists(const char *file)
 768 {
 769     int fd;
 770
 771     if (!file || strlen(file) <= 0)
 772         return false;
 773
 774 #ifdef HAVE_DIRCACHE
 775     if (dircache_is_enabled())
 776         return (dircache_get_entry_ptr(file) != NULL);
 777 #endif
 778
 779     fd = open(file, O_RDONLY);
 780     if (fd < 0)
 781         return false;
 782     close(fd);
 783     return true;
 784 }
 785
 786 bool dir_exists(const char *path)
 787 {
 788     DIR* d = opendir(path);
 789     if (!d)
 790         return false;
 791     closedir(d);
 792     return true;
 793 }
 794
 795 /*
 796  * removes the extension of filename (if it doesn't start with a .)
 797  * puts the result in buffer
 798  */
 799 char *strip_extension(char* buffer, int buffer_size, const char *filename)
 800 {
 801     char *dot = strrchr(filename, '.');
 802     int len;
 803
 804     if (buffer_size <= 0)
 805     {
 806         return NULL;
 807     }
 808
 809     buffer_size--;  /* Make room for end nil */
 810
 811     if (dot != 0 && filename[0] != '.')
 812     {
 813         len = dot - filename;
 814         len = MIN(len, buffer_size);
 815     }
 816     else
 817     {
 818         len = buffer_size;
 819     }
 820
 821     strlcpy(buffer, filename, len + 1);
 822
 823     return buffer;
 824 }
 825 #endif /* !defined(__PCTOOL__) */
 826
 827 char* skip_whitespace(char* const str)
 828 {
 829     char *s = str;
 830
 831     while (isspace(*s))
 832         s++;
 833
 834     return s;
 835 }
 836
 837 /* Format time into buf.
 838  *
 839  * buf      - buffer to format to.
 840  * buf_size - size of buffer.
 841  * t        - time to format, in milliseconds.
 842  */
 843 void format_time(char* buf, int buf_size, long t)
 844 {
 845     if ( t < 3600000 )
 846     {
 847       snprintf(buf, buf_size, "%d:%02d",
 848                (int) (t / 60000), (int) (t % 60000 / 1000));
 849     }
 850     else
 851     {
 852       snprintf(buf, buf_size, "%d:%02d:%02d",
 853                (int) (t / 3600000), (int) (t % 3600000 / 60000),
 854                (int) (t % 60000 / 1000));
 855     }
 856 }
 857
 858
 859 /** Open a UTF-8 file and set file descriptor to first byte after BOM.
 860  *  If no BOM is present this behaves like open().
 861  *  If the file is opened for writing and O_TRUNC is set, write a BOM to
 862  *  the opened file and leave the file pointer set after the BOM.
 863  */
 864 #define BOM "\xef\xbb\xbf"
 865 #define BOM_SIZE 3
 866
 867 int open_utf8(const char* pathname, int flags)
 868 {
 869     int fd;
 870     unsigned char bom[BOM_SIZE];
 871
 872     fd = open(pathname, flags);
 873     if(fd < 0)
 874         return fd;
 875
 876     if(flags & (O_TRUNC | O_WRONLY))
 877     {
 878         write(fd, BOM, BOM_SIZE);
 879     }
 880     else
 881     {
 882         read(fd, bom, BOM_SIZE);
 883         /* check for BOM */
 884         if(memcmp(bom, BOM, BOM_SIZE))
 885             lseek(fd, 0, SEEK_SET);
 886     }
 887     return fd;
 888 }
 889
 890
 891 #ifdef HAVE_LCD_COLOR
 892 /*
 893  * Helper function to convert a string of 6 hex digits to a native colour
 894  */
 895
 896 static int hex2dec(int c)
 897 {
 898    return  (((c) >= '0' && ((c) <= '9')) ? (c) - '0' :
 899                                            (toupper(c)) - 'A' + 10);
 900 }
 901
 902 int hex_to_rgb(const char* hex, int* color)
 903 {
 904     int red, green, blue;
 905     int i = 0;
 906
 907     while ((i < 6) && (isxdigit(hex[i])))
 908         i++;
 909
 910     if (i < 6)
 911         return -1;
 912
 913     red = (hex2dec(hex[0]) << 4) | hex2dec(hex[1]);
 914     green = (hex2dec(hex[2]) << 4) | hex2dec(hex[3]);
 915     blue = (hex2dec(hex[4]) << 4) | hex2dec(hex[5]);
 916
 917     *color = LCD_RGBPACK(red,green,blue);
 918
 919     return 0;
 920 }
 921 #endif /* HAVE_LCD_COLOR */
 922
 923 #ifdef HAVE_LCD_BITMAP
 924 /* A simplified scanf - used (at time of writing) by wps parsing functions.
 925
 926    fmt - char array specifying the format of each list option.  Valid values
 927          are:  d - int
 928                s - string (sets pointer to string, without copying)
 929                c - hex colour (RGB888 - e.g. ff00ff)
 930                g - greyscale "colour" (0-3)
 931    set_vals - if not NULL 1 is set in the bitplace if the item was read OK
 932                 0 if not read.
 933                 first item is LSB, (max 32 items! )
 934                 Stops parseing if an item is invalid unless the item == '-'
 935    sep - list separator (e.g. ',' or '|')
 936    str  - string to parse, must be terminated by 0 or sep
 937    ... - pointers to store the parsed values
 938
 939    return value - pointer to char after parsed data, 0 if there was an error.
 940
 941 */
 942
 943 /* '0'-'3' are ASCII 0x30 to 0x33 */
 944 #define is0123(x) (((x) & 0xfc) == 0x30)
 945
 946 const char* parse_list(const char *fmt, uint32_t *set_vals,
 947                        const char sep, const char* str, ...)
 948 {
 949     va_list ap;
 950     const char* p = str, *f = fmt;
 951     const char** s;
 952     int* d;
 953     bool set;
 954     int i=0;
 955
 956     va_start(ap, str);
 957     if (set_vals)
 958         *set_vals = 0;
 959     while (*fmt)
 960     {
 961         /* Check for separator, if we're not at the start */
 962         if (f != fmt)
 963         {
 964             if (*p != sep)
 965                 goto err;
 966             p++;
 967         }
 968         set = false;
 969         switch (*fmt++)
 970         {
 971             case 's': /* string - return a pointer to it (not a copy) */
 972                 s = va_arg(ap, const char **);
 973
 974                 *s = p;
 975                 while (*p && *p != sep)
 976                    p++;
 977                 set = (s[0][0]!='-') && (s[0][1]!=sep) ;
 978                 break;
 979
 980             case 'd': /* int */
 981                 d = va_arg(ap, int*);
 982                 if (!isdigit(*p))
 983                 {
 984                     if (!set_vals || *p != '-')
 985                         goto err;
 986                     while (*p && *p != sep)
 987                         p++;
 988                 }
 989                 else
 990                 {
 991                    *d = *p++ - '0';
 992                     while (isdigit(*p))
 993                        *d = (*d * 10) + (*p++ - '0');
 994                     set = true;
 995                 }
 996
 997                 break;
 998
 999 #ifdef HAVE_LCD_COLOR
1000             case 'c': /* colour (rrggbb - e.g. f3c1a8) */
1001                 d = va_arg(ap, int*);
1002
1003                 if (hex_to_rgb(p, d) < 0)
1004                 {
1005                     if (!set_vals || *p != '-')
1006                         goto err;
1007                     while (*p && *p != sep)
1008                         p++;
1009                 }
1010                 else
1011                 {
1012                     p += 6;
1013                     set = true;
1014                 }
1015
1016                 break;
1017 #endif
1018
1019 #if LCD_DEPTH == 2 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH == 2)
1020             case 'g': /* greyscale colour (0-3) */
1021                 d = va_arg(ap, int*);
1022
1023                 if (is0123(*p))
1024                 {
1025                     *d = *p++ - '0';
1026                     set = true;
1027                 }
1028                 else if (!set_vals || *p != '-')
1029                     goto err;
1030                 else
1031                 {
1032                     while (*p && *p != sep)
1033                         p++;
1034                 }
1035
1036                 break;
1037 #endif
1038
1039             default:  /* Unknown format type */
1040                 goto err;
1041                 break;
1042         }
1043         if (set_vals && set)
1044             *set_vals |= BIT_N(i);
1045         i++;
1046     }
1047
1048     va_end(ap);
1049     return p;
1050
1051 err:
1052     va_end(ap);
1053     return 0;
1054 }
1055 #endif