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 "appevents.h"
  34 #include "lang.h"
  35 #include "dir.h"
  36 #include "lcd-remote.h"
  37 #include "errno.h"
  38 #include "system.h"
  39 #include "timefuncs.h"
  40 #include "screens.h"
  41 #include "talk.h"
  42 #include "mpeg.h"
  43 #include "audio.h"
  44 #include "mp3_playback.h"
  45 #include "settings.h"
  46 #include "storage.h"
  47 #include "ata_idle_notify.h"
  48 #include "kernel.h"
  49 #include "power.h"
  50 #include "powermgmt.h"
  51 #include "backlight.h"
  52 #include "version.h"
  53 #include "font.h"
  54 #include "splash.h"
  55 #include "tagcache.h"
  56 #include "scrobbler.h"
  57 #include "sound.h"
  58 #include "playlist.h"
  59 #include "yesno.h"
  60 #include "viewport.h"
  61
  62 #ifdef IPOD_ACCESSORY_PROTOCOL
  63 #include "iap.h"
  64 #endif
  65
  66 #if (CONFIG_STORAGE & STORAGE_MMC)
  67 #include "ata_mmc.h"
  68 #endif
  69 #include "tree.h"
  70 #include "eeprom_settings.h"
  71 #if defined(HAVE_RECORDING) && !defined(__PCTOOL__)
  72 #include "recording.h"
  73 #endif
  74 #if defined(HAVE_LCD_BITMAP) && !defined(__PCTOOL__)
  75 #include "bmp.h"
  76 #include "icons.h"
  77 #endif /* End HAVE_LCD_BITMAP */
  78 #include "bookmark.h"
  79 #include "wps.h"
  80 #include "playback.h"
  81
  82 #ifdef BOOTFILE
  83 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
  84 #include "rolo.h"
  85 #include "yesno.h"
  86 #endif
  87 #endif
  88
  89 /* Format a large-range value for output, using the appropriate unit so that
  90  * the displayed value is in the range 1 <= display < 1000 (1024 for "binary"
  91  * units) if possible, and 3 significant digits are shown. If a buffer is
  92  * given, the result is snprintf()'d into that buffer, otherwise the result is
  93  * voiced.*/
  94 char *output_dyn_value(char *buf, int buf_size, int value,
  95                        const unsigned char **units, bool bin_scale)
  96 {
  97     int scale = bin_scale ? 1024 : 1000;
  98     int fraction = 0;
  99     int unit_no = 0;
 100     char tbuf[5];
 101
 102     while (value >= scale)
 103     {
 104         fraction = value % scale;
 105         value /= scale;
 106         unit_no++;
 107     }
 108     if (bin_scale)
 109         fraction = fraction * 1000 / 1024;
 110
 111     if (value >= 100 || !unit_no)
 112         tbuf[0] = '\0';
 113     else if (value >= 10)
 114         snprintf(tbuf, sizeof(tbuf), "%01d", fraction / 100);
 115     else
 116         snprintf(tbuf, sizeof(tbuf), "%02d", fraction / 10);
 117
 118     if (buf)
 119     {
 120         if (strlen(tbuf))
 121             snprintf(buf, buf_size, "%d%s%s%s", value, str(LANG_POINT),
 122                      tbuf, P2STR(units[unit_no]));
 123         else
 124             snprintf(buf, buf_size, "%d%s", value, P2STR(units[unit_no]));
 125     }
 126     else
 127     {
 128         talk_fractional(tbuf, value, P2ID(units[unit_no]));
 129     }
 130     return buf;
 131 }
 132
 133 /* Ask the user if they really want to erase the current dynamic playlist
 134  * returns true if the playlist should be replaced */
 135 bool warn_on_pl_erase(void)
 136 {
 137     if (global_settings.warnon_erase_dynplaylist &&
 138         !global_settings.party_mode &&
 139         playlist_modified(NULL))
 140     {
 141         static const char *lines[] =
 142             {ID2P(LANG_WARN_ERASEDYNPLAYLIST_PROMPT)};
 143         static const struct text_message message={lines, 1};
 144
 145         return (gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES);
 146     }
 147     else
 148         return true;
 149 }
 150
 151 /* Read (up to) a line of text from fd into buffer and return number of bytes
 152  * read (which may be larger than the number of bytes stored in buffer). If
 153  * an error occurs, -1 is returned (and buffer contains whatever could be
 154  * read). A line is terminated by a LF char. Neither LF nor CR chars are
 155  * stored in buffer.
 156  */
 157 int read_line(int fd, char* buffer, int buffer_size)
 158 {
 159     int count = 0;
 160     int num_read = 0;
 161
 162     errno = 0;
 163
 164     while (count < buffer_size)
 165     {
 166         unsigned char c;
 167
 168         if (1 != read(fd, &c, 1))
 169             break;
 170
 171         num_read++;
 172
 173         if ( c == '\n' )
 174             break;
 175
 176         if ( c == '\r' )
 177             continue;
 178
 179         buffer[count++] = c;
 180     }
 181
 182     buffer[MIN(count, buffer_size - 1)] = 0;
 183
 184     return errno ? -1 : num_read;
 185 }
 186
 187 /* Performance optimized version of the previous function. */
 188 int fast_readline(int fd, char *buf, int buf_size, void *parameters,
 189                   int (*callback)(int n, const char *buf, void *parameters))
 190 {
 191     char *p, *next;
 192     int rc, pos = 0;
 193     int count = 0;
 194
 195     while ( 1 )
 196     {
 197         next = NULL;
 198
 199         rc = read(fd, &buf[pos], buf_size - pos - 1);
 200         if (rc >= 0)
 201             buf[pos+rc] = '\0';
 202
 203         if ( (p = strchr(buf, '\r')) != NULL)
 204         {
 205             *p = '\0';
 206             next = ++p;
 207         }
 208         else
 209             p = buf;
 210
 211         if ( (p = strchr(p, '\n')) != NULL)
 212         {
 213             *p = '\0';
 214             next = ++p;
 215         }
 216
 217         rc = callback(count, buf, parameters);
 218         if (rc < 0)
 219             return rc;
 220
 221         count++;
 222         if (next)
 223         {
 224             pos = buf_size - ((long)next - (long)buf) - 1;
 225             memmove(buf, next, pos);
 226         }
 227         else
 228             break ;
 229     }
 230
 231     return 0;
 232 }
 233
 234 /* parse a line from a configuration file. the line format is:
 235
 236    name: value
 237
 238    Any whitespace before setting name or value (after ':') is ignored.
 239    A # as first non-whitespace character discards the whole line.
 240    Function sets pointers to null-terminated setting name and value.
 241    Returns false if no valid config entry was found.
 242 */
 243
 244 bool settings_parseline(char* line, char** name, char** value)
 245 {
 246     char* ptr;
 247
 248     line = skip_whitespace(line);
 249
 250     if ( *line == '#' )
 251         return false;
 252
 253     ptr = strchr(line, ':');
 254     if ( !ptr )
 255         return false;
 256
 257     *name = line;
 258     *ptr = 0;
 259     ptr++;
 260     ptr = skip_whitespace(ptr);
 261     *value = ptr;
 262     return true;
 263 }
 264
 265 static void system_flush(void)
 266 {
 267     scrobbler_shutdown();
 268     playlist_shutdown();
 269     tree_flush();
 270     call_storage_idle_notifys(true); /*doesnt work on usb and shutdown from ata thread */
 271 }
 272
 273 static void system_restore(void)
 274 {
 275     tree_restore();
 276     scrobbler_init();
 277 }
 278
 279 static bool clean_shutdown(void (*callback)(void *), void *parameter)
 280 {
 281 #ifdef SIMULATOR
 282     (void)callback;
 283     (void)parameter;
 284     bookmark_autobookmark();
 285     call_storage_idle_notifys(true);
 286     exit(0);
 287 #else
 288     long msg_id = -1;
 289     int i;
 290
 291     scrobbler_poweroff();
 292
 293 #if CONFIG_CHARGING && !defined(HAVE_POWEROFF_WHILE_CHARGING)
 294     if(!charger_inserted())
 295 #endif
 296     {
 297         bool batt_safe = battery_level_safe();
 298         int audio_stat = audio_status();
 299
 300         FOR_NB_SCREENS(i)
 301         {
 302             screens[i].clear_display();
 303             screens[i].update();
 304         }
 305
 306         if (batt_safe)
 307         {
 308 #ifdef HAVE_TAGCACHE
 309             if (!tagcache_prepare_shutdown())
 310             {
 311                 cancel_shutdown();
 312                 splash(HZ, ID2P(LANG_TAGCACHE_BUSY));
 313                 return false;
 314             }
 315 #endif
 316             if (battery_level() > 10)
 317                 splash(0, str(LANG_SHUTTINGDOWN));
 318             else
 319             {
 320                 msg_id = LANG_WARNING_BATTERY_LOW;
 321                 splashf(0, "%s %s", str(LANG_WARNING_BATTERY_LOW),
 322                                     str(LANG_SHUTTINGDOWN));
 323             }
 324         }
 325         else
 326         {
 327             msg_id = LANG_WARNING_BATTERY_EMPTY;
 328             splashf(0, "%s %s", str(LANG_WARNING_BATTERY_EMPTY),
 329                                 str(LANG_SHUTTINGDOWN));
 330         }
 331
 332         if (global_settings.fade_on_stop
 333             && (audio_stat & AUDIO_STATUS_PLAY))
 334         {
 335             fade(false, false);
 336         }
 337
 338         if (batt_safe) /* do not save on critical battery */
 339         {
 340 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 341             if (audio_stat & AUDIO_STATUS_RECORD)
 342             {
 343                 rec_command(RECORDING_CMD_STOP);
 344                 /* wait for stop to complete */
 345                 while (audio_status() & AUDIO_STATUS_RECORD)
 346                     sleep(1);
 347             }
 348 #endif
 349             bookmark_autobookmark();
 350
 351             /* audio_stop_recording == audio_stop for HWCODEC */
 352             audio_stop();
 353
 354             if (callback != NULL)
 355                 callback(parameter);
 356
 357 #if CONFIG_CODEC != SWCODEC
 358             /* wait for audio_stop or audio_stop_recording to complete */
 359             while (audio_status())
 360                 sleep(1);
 361 #endif
 362
 363 #if defined(HAVE_RECORDING) && CONFIG_CODEC == SWCODEC
 364             audio_close_recording();
 365 #endif
 366
 367             if(global_settings.talk_menu)
 368             {
 369                 bool enqueue = false;
 370                 if(msg_id != -1)
 371                 {
 372                     talk_id(msg_id, enqueue);
 373                     enqueue = true;
 374                 }
 375                 talk_id(LANG_SHUTTINGDOWN, enqueue);
 376 #if CONFIG_CODEC == SWCODEC
 377                 voice_wait();
 378 #endif
 379             }
 380
 381             system_flush();
 382 #ifdef HAVE_EEPROM_SETTINGS
 383             if (firmware_settings.initialized)
 384             {
 385                 firmware_settings.disk_clean = true;
 386                 firmware_settings.bl_version = 0;
 387                 eeprom_settings_store();
 388             }
 389 #endif
 390         }
 391 #ifdef HAVE_DIRCACHE
 392         else
 393             dircache_disable();
 394 #endif
 395
 396         shutdown_hw();
 397     }
 398 #endif
 399     return false;
 400 }
 401
 402 bool list_stop_handler(void)
 403 {
 404     bool ret = false;
 405
 406     /* Stop the music if it is playing */
 407     if(audio_status())
 408     {
 409         if (!global_settings.party_mode)
 410         {
 411             if (global_settings.fade_on_stop)
 412                 fade(false, false);
 413             bookmark_autobookmark();
 414             audio_stop();
 415             ret = true;  /* bookmarking can make a refresh necessary */
 416         }
 417     }
 418 #if CONFIG_CHARGING
 419 #if (CONFIG_KEYPAD == RECORDER_PAD) && !defined(HAVE_SW_POWEROFF)
 420     else
 421     {
 422         if (charger_inserted())
 423             charging_splash();
 424         else
 425             shutdown_screen(); /* won't return if shutdown actually happens */
 426
 427         ret = true;  /* screen is dirty, caller needs to refresh */
 428     }
 429 #endif
 430 #ifndef HAVE_POWEROFF_WHILE_CHARGING
 431     {
 432         static long last_off = 0;
 433
 434         if (TIME_BEFORE(current_tick, last_off + HZ/2))
 435         {
 436             if (charger_inserted())
 437             {
 438                 charging_splash();
 439                 ret = true;  /* screen is dirty, caller needs to refresh */
 440             }
 441         }
 442         last_off = current_tick;
 443     }
 444 #endif
 445 #endif /* CONFIG_CHARGING */
 446     return ret;
 447 }
 448
 449 #if CONFIG_CHARGING
 450 static bool waiting_to_resume_play = false;
 451 static long play_resume_tick;
 452
 453 static void car_adapter_mode_processing(bool inserted)
 454 {
 455     if (global_settings.car_adapter_mode)
 456     {
 457         if(inserted)
 458         {
 459             /*
 460              * Just got plugged in, delay & resume if we were playing
 461              */
 462             if (audio_status() & AUDIO_STATUS_PAUSE)
 463             {
 464                 /* delay resume a bit while the engine is cranking */
 465                 play_resume_tick = current_tick + HZ*5;
 466                 waiting_to_resume_play = true;
 467             }
 468         }
 469         else
 470         {
 471             /*
 472              * Just got unplugged, pause if playing
 473              */
 474             if ((audio_status() & AUDIO_STATUS_PLAY) &&
 475                 !(audio_status() & AUDIO_STATUS_PAUSE))
 476             {
 477                 if (global_settings.fade_on_stop)
 478                     fade(false, false);
 479                 else
 480                     audio_pause();
 481             }
 482             waiting_to_resume_play = false;
 483         }
 484     }
 485 }
 486
 487 static void car_adapter_tick(void)
 488 {
 489     if (waiting_to_resume_play)
 490     {
 491         if (TIME_AFTER(current_tick, play_resume_tick))
 492         {
 493             if (audio_status() & AUDIO_STATUS_PAUSE)
 494             {
 495                 queue_broadcast(SYS_CAR_ADAPTER_RESUME, 0);
 496             }
 497             waiting_to_resume_play = false;
 498         }
 499     }
 500 }
 501
 502 void car_adapter_mode_init(void)
 503 {
 504     tick_add_task(car_adapter_tick);
 505 }
 506 #endif
 507
 508 #ifdef HAVE_HEADPHONE_DETECTION
 509 static void unplug_change(bool inserted)
 510 {
 511     static bool headphone_caused_pause = false;
 512
 513     if (global_settings.unplug_mode)
 514     {
 515         int audio_stat = audio_status();
 516         if (inserted)
 517         {
 518             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 519                     headphone_caused_pause &&
 520                     global_settings.unplug_mode > 1 )
 521                 audio_resume();
 522             backlight_on();
 523             headphone_caused_pause = false;
 524         } else {
 525             if ((audio_stat & AUDIO_STATUS_PLAY) &&
 526                     !(audio_stat & AUDIO_STATUS_PAUSE))
 527             {
 528                 headphone_caused_pause = true;
 529                 audio_pause();
 530
 531                 if (global_settings.unplug_rw)
 532                 {
 533                     if (audio_current_track()->elapsed >
 534                             (unsigned long)(global_settings.unplug_rw*1000))
 535                         audio_ff_rewind(audio_current_track()->elapsed -
 536                                 (global_settings.unplug_rw*1000));
 537                     else
 538                         audio_ff_rewind(0);
 539                 }
 540             }
 541         }
 542     }
 543 }
 544 #endif
 545
 546 long default_event_handler_ex(long event, void (*callback)(void *), void *parameter)
 547 {
 548     switch(event)
 549     {
 550         case SYS_BATTERY_UPDATE:
 551             if(global_settings.talk_battery_level)
 552             {
 553                 talk_ids(true, VOICE_PAUSE, VOICE_PAUSE,
 554                          LANG_BATTERY_TIME,
 555                          TALK_ID(battery_level(), UNIT_PERCENT),
 556                          VOICE_PAUSE);
 557                 talk_force_enqueue_next();
 558             }
 559             break;
 560         case SYS_USB_CONNECTED:
 561             if (callback != NULL)
 562                 callback(parameter);
 563 #if (CONFIG_STORAGE & STORAGE_MMC)
 564             if (!mmc_touched() ||
 565                 (mmc_remove_request() == SYS_HOTSWAP_EXTRACTED))
 566 #endif
 567             {
 568                 system_flush();
 569 #ifdef BOOTFILE
 570 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 571                 check_bootfile(false); /* gets initial size */
 572 #endif
 573 #endif
 574                 usb_screen();
 575 #ifdef BOOTFILE
 576 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 577                 check_bootfile(true);
 578 #endif
 579 #endif
 580                 system_restore();
 581             }
 582             return SYS_USB_CONNECTED;
 583         case SYS_POWEROFF:
 584             if (!clean_shutdown(callback, parameter))
 585                 return SYS_POWEROFF;
 586             break;
 587 #if CONFIG_CHARGING
 588         case SYS_CHARGER_CONNECTED:
 589             car_adapter_mode_processing(true);
 590             return SYS_CHARGER_CONNECTED;
 591
 592         case SYS_CHARGER_DISCONNECTED:
 593             car_adapter_mode_processing(false);
 594             return SYS_CHARGER_DISCONNECTED;
 595
 596         case SYS_CAR_ADAPTER_RESUME:
 597             audio_resume();
 598             return SYS_CAR_ADAPTER_RESUME;
 599 #endif
 600 #ifdef HAVE_HEADPHONE_DETECTION
 601         case SYS_PHONE_PLUGGED:
 602             unplug_change(true);
 603             return SYS_PHONE_PLUGGED;
 604
 605         case SYS_PHONE_UNPLUGGED:
 606             unplug_change(false);
 607             return SYS_PHONE_UNPLUGGED;
 608 #endif
 609 #ifdef IPOD_ACCESSORY_PROTOCOL
 610         case SYS_IAP_PERIODIC:
 611             iap_periodic();
 612             return SYS_IAP_PERIODIC;
 613         case SYS_IAP_HANDLEPKT:
 614             iap_handlepkt();
 615             return SYS_IAP_HANDLEPKT;
 616 #endif
 617     }
 618     return 0;
 619 }
 620
 621 long default_event_handler(long event)
 622 {
 623     return default_event_handler_ex(event, NULL, NULL);
 624 }
 625
 626 int show_logo( void )
 627 {
 628 #ifdef HAVE_LCD_BITMAP
 629     char version[32];
 630     int font_h, font_w;
 631
 632     snprintf(version, sizeof(version), "Ver. %s", appsversion);
 633
 634     lcd_clear_display();
 635 #ifdef SANSA_CLIP   /* display the logo in the blue area of the screen */
 636     lcd_setfont(FONT_SYSFIXED);
 637     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 638     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 639                0, (unsigned char *)version);
 640     lcd_bitmap(rockboxlogo, 0, 16, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 641 #else
 642     lcd_bitmap(rockboxlogo, 0, 10, BMPWIDTH_rockboxlogo, BMPHEIGHT_rockboxlogo);
 643     lcd_setfont(FONT_SYSFIXED);
 644     lcd_getstringsize((unsigned char *)"A", &font_w, &font_h);
 645     lcd_putsxy((LCD_WIDTH/2) - ((strlen(version)*font_w)/2),
 646                LCD_HEIGHT-font_h, (unsigned char *)version);
 647 #endif
 648     lcd_setfont(FONT_UI);
 649
 650 #else
 651     char *rockbox = "  ROCKbox!";
 652
 653     lcd_clear_display();
 654     lcd_double_height(true);
 655     lcd_puts(0, 0, rockbox);
 656     lcd_puts_scroll(0, 1, appsversion);
 657 #endif
 658     lcd_update();
 659
 660 #ifdef HAVE_REMOTE_LCD
 661     lcd_remote_clear_display();
 662     lcd_remote_bitmap(remote_rockboxlogo, 0, 10, BMPWIDTH_remote_rockboxlogo,
 663                       BMPHEIGHT_remote_rockboxlogo);
 664     lcd_remote_setfont(FONT_SYSFIXED);
 665     lcd_remote_getstringsize((unsigned char *)"A", &font_w, &font_h);
 666     lcd_remote_putsxy((LCD_REMOTE_WIDTH/2) - ((strlen(version)*font_w)/2),
 667                        LCD_REMOTE_HEIGHT-font_h, (unsigned char *)version);
 668     lcd_remote_setfont(FONT_UI);
 669     lcd_remote_update();
 670 #endif
 671
 672     return 0;
 673 }
 674
 675 #if CONFIG_CODEC == SWCODEC
 676 int get_replaygain_mode(bool have_track_gain, bool have_album_gain)
 677 {
 678     int type;
 679
 680     bool track = ((global_settings.replaygain_type == REPLAYGAIN_TRACK)
 681         || ((global_settings.replaygain_type == REPLAYGAIN_SHUFFLE)
 682             && global_settings.playlist_shuffle));
 683
 684     type = (!track && have_album_gain) ? REPLAYGAIN_ALBUM
 685         : have_track_gain ? REPLAYGAIN_TRACK : -1;
 686
 687     return type;
 688 }
 689 #endif
 690
 691 #ifdef BOOTFILE
 692 #if !defined(USB_NONE) && !defined(USB_HANDLED_BY_OF)
 693 /*
 694     memorize/compare details about the BOOTFILE
 695     we don't use dircache because it may not be up to date after
 696     USB disconnect (scanning in the background)
 697 */
 698 void check_bootfile(bool do_rolo)
 699 {
 700     static unsigned short wrtdate = 0;
 701     static unsigned short wrttime = 0;
 702     DIR* dir = NULL;
 703     struct dirent* entry = NULL;
 704
 705     /* 1. open BOOTDIR and find the BOOTFILE dir entry */
 706     dir = opendir(BOOTDIR);
 707
 708     if(!dir) return; /* do we want an error splash? */
 709
 710     /* loop all files in BOOTDIR */
 711     while(0 != (entry = readdir(dir)))
 712     {
 713         if(!strcasecmp(entry->d_name, BOOTFILE))
 714         {
 715             /* found the bootfile */
 716             if(wrtdate && do_rolo)
 717             {
 718                 if((entry->wrtdate != wrtdate) ||
 719                    (entry->wrttime != wrttime))
 720                 {
 721                     static const char *lines[] = { ID2P(LANG_BOOT_CHANGED),
 722                                                    ID2P(LANG_REBOOT_NOW) };
 723                     static const struct text_message message={ lines, 2 };
 724                     button_clear_queue(); /* Empty the keyboard buffer */
 725                     if(gui_syncyesno_run(&message, NULL, NULL) == YESNO_YES)
 726                     rolo_load(BOOTDIR "/" BOOTFILE);
 727                 }
 728             }
 729             wrtdate = entry->wrtdate;
 730             wrttime = entry->wrttime;
 731         }
 732     }
 733     closedir(dir);
 734 }
 735 #endif
 736 #endif
 737
 738 /* check range, set volume and save settings */
 739 void setvol(void)
 740 {
 741     const int min_vol = sound_min(SOUND_VOLUME);
 742     const int max_vol = sound_max(SOUND_VOLUME);
 743     if (global_settings.volume < min_vol)
 744         global_settings.volume = min_vol;
 745     if (global_settings.volume > max_vol)
 746         global_settings.volume = max_vol;
 747     sound_set_volume(global_settings.volume);
 748     settings_save();
 749 }
 750
 751 char* strrsplt(char* str, int c)
 752 {
 753     char* s = strrchr(str, c);
 754
 755     if (s != NULL)
 756     {
 757         *s++ = '\0';
 758     }
 759     else
 760     {
 761         s = str;
 762     }
 763
 764     return s;
 765 }
 766
 767 /* Test file existence, using dircache of possible */
 768 bool file_exists(const char *file)
 769 {
 770     int fd;
 771
 772     if (!file || strlen(file) <= 0)
 773         return false;
 774
 775 #ifdef HAVE_DIRCACHE
 776     if (dircache_is_enabled())
 777         return (dircache_get_entry_ptr(file) != NULL);
 778 #endif
 779
 780     fd = open(file, O_RDONLY);
 781     if (fd < 0)
 782         return false;
 783     close(fd);
 784     return true;
 785 }
 786
 787 bool dir_exists(const char *path)
 788 {
 789     DIR* d = opendir(path);
 790     if (!d)
 791         return false;
 792     closedir(d);
 793     return true;
 794 }
 795
 796 /*
 797  * removes the extension of filename (if it doesn't start with a .)
 798  * puts the result in buffer
 799  */
 800 char *strip_extension(char* buffer, int buffer_size, const char *filename)
 801 {
 802     char *dot = strrchr(filename, '.');
 803     int len;
 804
 805     if (buffer_size <= 0)
 806     {
 807         return NULL;
 808     }
 809
 810     buffer_size--;  /* Make room for end nil */
 811
 812     if (dot != 0 && filename[0] != '.')
 813     {
 814         len = dot - filename;
 815         len = MIN(len, buffer_size);
 816     }
 817     else
 818     {
 819         len = buffer_size;
 820     }
 821
 822     strlcpy(buffer, filename, len + 1);
 823
 824     return buffer;
 825 }
 826 #endif /* !defined(__PCTOOL__) */
 827
 828 char* skip_whitespace(char* const str)
 829 {
 830     char *s = str;
 831
 832     while (isspace(*s))
 833         s++;
 834
 835     return s;
 836 }
 837
 838 /* Format time into buf.
 839  *
 840  * buf      - buffer to format to.
 841  * buf_size - size of buffer.
 842  * t        - time to format, in milliseconds.
 843  */
 844 void format_time(char* buf, int buf_size, long t)
 845 {
 846     if ( t < 3600000 )
 847     {
 848       snprintf(buf, buf_size, "%d:%02d",
 849                (int) (t / 60000), (int) (t % 60000 / 1000));
 850     }
 851     else
 852     {
 853       snprintf(buf, buf_size, "%d:%02d:%02d",
 854                (int) (t / 3600000), (int) (t % 3600000 / 60000),
 855                (int) (t % 60000 / 1000));
 856     }
 857 }
 858
 859
 860 /** Open a UTF-8 file and set file descriptor to first byte after BOM.
 861  *  If no BOM is present this behaves like open().
 862  *  If the file is opened for writing and O_TRUNC is set, write a BOM to
 863  *  the opened file and leave the file pointer set after the BOM.
 864  */
 865 #define BOM "\xef\xbb\xbf"
 866 #define BOM_SIZE 3
 867
 868 int open_utf8(const char* pathname, int flags)
 869 {
 870     int fd;
 871     unsigned char bom[BOM_SIZE];
 872
 873     fd = open(pathname, flags);
 874     if(fd < 0)
 875         return fd;
 876
 877     if(flags & (O_TRUNC | O_WRONLY))
 878     {
 879         write(fd, BOM, BOM_SIZE);
 880     }
 881     else
 882     {
 883         read(fd, bom, BOM_SIZE);
 884         /* check for BOM */
 885         if(memcmp(bom, BOM, BOM_SIZE))
 886             lseek(fd, 0, SEEK_SET);
 887     }
 888     return fd;
 889 }
 890
 891
 892 #ifdef HAVE_LCD_COLOR
 893 /*
 894  * Helper function to convert a string of 6 hex digits to a native colour
 895  */
 896
 897 static int hex2dec(int c)
 898 {
 899    return  (((c) >= '0' && ((c) <= '9')) ? (c) - '0' :
 900                                            (toupper(c)) - 'A' + 10);
 901 }
 902
 903 int hex_to_rgb(const char* hex, int* color)
 904 {
 905     int red, green, blue;
 906     int i = 0;
 907
 908     while ((i < 6) && (isxdigit(hex[i])))
 909         i++;
 910
 911     if (i < 6)
 912         return -1;
 913
 914     red = (hex2dec(hex[0]) << 4) | hex2dec(hex[1]);
 915     green = (hex2dec(hex[2]) << 4) | hex2dec(hex[3]);
 916     blue = (hex2dec(hex[4]) << 4) | hex2dec(hex[5]);
 917
 918     *color = LCD_RGBPACK(red,green,blue);
 919
 920     return 0;
 921 }
 922 #endif /* HAVE_LCD_COLOR */
 923
 924 #ifdef HAVE_LCD_BITMAP
 925 /* A simplified scanf - used (at time of writing) by wps parsing functions.
 926
 927    fmt - char array specifying the format of each list option.  Valid values
 928          are:  d - int
 929                s - string (sets pointer to string, without copying)
 930                c - hex colour (RGB888 - e.g. ff00ff)
 931                g - greyscale "colour" (0-3)
 932    set_vals - if not NULL 1 is set in the bitplace if the item was read OK
 933                 0 if not read.
 934                 first item is LSB, (max 32 items! )
 935                 Stops parseing if an item is invalid unless the item == '-'
 936    sep - list separator (e.g. ',' or '|')
 937    str  - string to parse, must be terminated by 0 or sep
 938    ... - pointers to store the parsed values
 939
 940    return value - pointer to char after parsed data, 0 if there was an error.
 941
 942 */
 943
 944 /* '0'-'3' are ASCII 0x30 to 0x33 */
 945 #define is0123(x) (((x) & 0xfc) == 0x30)
 946
 947 const char* parse_list(const char *fmt, uint32_t *set_vals,
 948                        const char sep, const char* str, ...)
 949 {
 950     va_list ap;
 951     const char* p = str, *f = fmt;
 952     const char** s;
 953     int* d;
 954     bool set;
 955     int i=0;
 956
 957     va_start(ap, str);
 958     if (set_vals)
 959         *set_vals = 0;
 960     while (*fmt)
 961     {
 962         /* Check for separator, if we're not at the start */
 963         if (f != fmt)
 964         {
 965             if (*p != sep)
 966                 goto err;
 967             p++;
 968         }
 969         set = false;
 970         switch (*fmt++)
 971         {
 972             case 's': /* string - return a pointer to it (not a copy) */
 973                 s = va_arg(ap, const char **);
 974
 975                 *s = p;
 976                 while (*p && *p != sep)
 977                    p++;
 978                 set = (s[0][0]!='-') && (s[0][1]!=sep) ;
 979                 break;
 980
 981             case 'd': /* int */
 982                 d = va_arg(ap, int*);
 983                 if (!isdigit(*p))
 984                 {
 985                     if (!set_vals || *p != '-')
 986                         goto err;
 987                     while (*p && *p != sep)
 988                         p++;
 989                 }
 990                 else
 991                 {
 992                    *d = *p++ - '0';
 993                     while (isdigit(*p))
 994                        *d = (*d * 10) + (*p++ - '0');
 995                     set = true;
 996                 }
 997
 998                 break;
 999
1000 #ifdef HAVE_LCD_COLOR
1001             case 'c': /* colour (rrggbb - e.g. f3c1a8) */
1002                 d = va_arg(ap, int*);
1003
1004                 if (hex_to_rgb(p, d) < 0)
1005                 {
1006                     if (!set_vals || *p != '-')
1007                         goto err;
1008                     while (*p && *p != sep)
1009                         p++;
1010                 }
1011                 else
1012                 {
1013                     p += 6;
1014                     set = true;
1015                 }
1016
1017                 break;
1018 #endif
1019
1020 #if LCD_DEPTH == 2 || (defined(HAVE_REMOTE_LCD) && LCD_REMOTE_DEPTH == 2)
1021             case 'g': /* greyscale colour (0-3) */
1022                 d = va_arg(ap, int*);
1023
1024                 if (is0123(*p))
1025                 {
1026                     *d = *p++ - '0';
1027                     set = true;
1028                 }
1029                 else if (!set_vals || *p != '-')
1030                     goto err;
1031                 else
1032                 {
1033                     while (*p && *p != sep)
1034                         p++;
1035                 }
1036
1037                 break;
1038 #endif
1039
1040             default:  /* Unknown format type */
1041                 goto err;
1042                 break;
1043         }
1044         if (set_vals && set)
1045             *set_vals |= BIT_N(i);
1046         i++;
1047     }
1048
1049     va_end(ap);
1050     return p;
1051
1052 err:
1053     va_end(ap);
1054     return 0;
1055 }
1056 #endif