apps/bookmark.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  *
   9  * Copyright (C)2003 by Benjamin Metzler
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  17  * KIND, either express or implied.
  18  *
  19  ****************************************************************************/
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <stdbool.h>
  25
  26 #include "config.h"
  27 #include "action.h"
  28 #include "audio.h"
  29 #include "playlist.h"
  30 #include "settings.h"
  31 #include "tree.h"
  32 #include "bookmark.h"
  33 #include "system.h"
  34 #include "icons.h"
  35 #include "menu.h"
  36 #include "lang.h"
  37 #include "talk.h"
  38 #include "misc.h"
  39 #include "splash.h"
  40 #include "yesno.h"
  41 #include "list.h"
  42 #include "plugin.h"
  43 #include "file.h"
  44 #include "filefuncs.h"
  45 #include "dsp.h"
  46
  47 #define MAX_BOOKMARKS 10
  48 #define MAX_BOOKMARK_SIZE  350
  49 #define RECENT_BOOKMARK_FILE ROCKBOX_DIR "/most-recent.bmark"
  50
  51 /* Used to buffer bookmarks while displaying the bookmark list. */
  52 struct bookmark_list
  53 {
  54     const char* filename;
  55     size_t buffer_size;
  56     int start;
  57     int count;
  58     int total_count;
  59     bool show_dont_resume;
  60     bool reload;
  61     bool show_playlist_name;
  62     char* items[];
  63 };
  64
  65 /* flags for optional bookmark tokens */
  66 #define BM_PITCH    0x01
  67 #define BM_SPEED    0x02
  68
  69 /* bookmark values */
  70 static struct {
  71     int  resume_index;
  72     unsigned long resume_offset;
  73     int  resume_seed;
  74     long resume_time;
  75     int  repeat_mode;
  76     bool shuffle;
  77     /* optional values */
  78     int  pitch;
  79     int  speed;
  80 } bm;
  81
  82 static bool  add_bookmark(const char* bookmark_file_name, const char* bookmark,
  83                           bool most_recent);
  84 static char* create_bookmark(void);
  85 static bool  delete_bookmark(const char* bookmark_file_name, int bookmark_id);
  86 static void  say_bookmark(const char* bookmark,
  87                           int bookmark_id, bool show_playlist_name);
  88 static bool  play_bookmark(const char* bookmark);
  89 static bool  generate_bookmark_file_name(const char *in);
  90 static bool  parse_bookmark(const char *bookmark, const bool get_filenames);
  91 static int   buffer_bookmarks(struct bookmark_list* bookmarks, int first_line);
  92 static const char* get_bookmark_info(int list_index,
  93                                      void* data,
  94                                      char *buffer,
  95                                      size_t buffer_len);
  96 static char* select_bookmark(const char* bookmark_file_name, bool show_dont_resume);
  97 static bool  is_bookmarkable_state(void);
  98 static bool  write_bookmark(bool create_bookmark_file, const char *bookmark);
  99 static int   get_bookmark_count(const char* bookmark_file_name);
 100
 101 #define TEMP_BUF_SIZE (MAX_PATH + 1)
 102 static char global_temp_buffer[TEMP_BUF_SIZE];
 103 /* File name created by generate_bookmark_file_name */
 104 static char global_bookmark_file_name[MAX_PATH];
 105 static char global_read_buffer[MAX_BOOKMARK_SIZE];
 106 /* Bookmark created by create_bookmark*/
 107 static char global_bookmark[MAX_BOOKMARK_SIZE];
 108 /* Filename from parsed bookmark (can be made local where needed) */
 109 static char global_filename[MAX_PATH];
 110
 111 /* ----------------------------------------------------------------------- */
 112 /* This is the interface function from the main menu.                      */
 113 /* ----------------------------------------------------------------------- */
 114 bool bookmark_create_menu(void)
 115 {
 116     write_bookmark(true, create_bookmark());
 117     return false;
 118 }
 119
 120 /* ----------------------------------------------------------------------- */
 121 /* This function acts as the load interface from the main menu             */
 122 /* This function determines the bookmark file name and then loads that file*/
 123 /* for the user.  The user can then select a bookmark to load.             */
 124 /* If no file/directory is currently playing, the menu item does not work. */
 125 /* ----------------------------------------------------------------------- */
 126 bool bookmark_load_menu(void)
 127 {
 128     if (is_bookmarkable_state())
 129     {
 130         char* name = playlist_get_name(NULL, global_temp_buffer,
 131                                        sizeof(global_temp_buffer));
 132         if (generate_bookmark_file_name(name))
 133         {
 134             char* bookmark = select_bookmark(global_bookmark_file_name, false);
 135
 136             if (bookmark != NULL)
 137             {
 138                 return play_bookmark(bookmark);
 139             }
 140         }
 141     }
 142
 143     return false;
 144 }
 145
 146 /* ----------------------------------------------------------------------- */
 147 /* Gives the user a list of the Most Recent Bookmarks.  This is an         */
 148 /* interface function                                                      */
 149 /* ----------------------------------------------------------------------- */
 150 bool bookmark_mrb_load()
 151 {
 152     char* bookmark = select_bookmark(RECENT_BOOKMARK_FILE, false);
 153
 154     if (bookmark != NULL)
 155     {
 156         return play_bookmark(bookmark);
 157     }
 158
 159     return false;
 160 }
 161
 162 /* ----------------------------------------------------------------------- */
 163 /* This function handles an autobookmark creation.  This is an interface   */
 164 /* function.                                                               */
 165 /* ----------------------------------------------------------------------- */
 166 bool bookmark_autobookmark(bool prompt_ok)
 167 {
 168     char*  bookmark;
 169     bool update;
 170
 171     if (!is_bookmarkable_state())
 172         return false;
 173
 174     audio_pause();    /* first pause playback */
 175     update = (global_settings.autoupdatebookmark && bookmark_exists());
 176     bookmark = create_bookmark();
 177     /* Workaround for inability to speak when paused: all callers will
 178        just do audio_stop() when we return, so we can do it right
 179        away. This makes it possible to speak the "Create a Bookmark?"
 180        prompt and the "Bookmark Created" splash. */
 181     audio_stop();
 182
 183     if (update)
 184         return write_bookmark(true, bookmark);
 185
 186     switch (global_settings.autocreatebookmark)
 187     {
 188         case BOOKMARK_YES:
 189             return write_bookmark(true, bookmark);
 190
 191         case BOOKMARK_NO:
 192             return false;
 193
 194         case BOOKMARK_RECENT_ONLY_YES:
 195             return write_bookmark(false, bookmark);
 196     }
 197 #ifdef HAVE_LCD_BITMAP
 198     const char *lines[]={ID2P(LANG_AUTO_BOOKMARK_QUERY)};
 199     const struct text_message message={lines, 1};
 200 #else
 201     const char *lines[]={ID2P(LANG_AUTO_BOOKMARK_QUERY),
 202                             str(LANG_CONFIRM_WITH_BUTTON)};
 203     const struct text_message message={lines, 2};
 204 #endif
 205
 206     if(prompt_ok && gui_syncyesno_run(&message, NULL, NULL)==YESNO_YES)
 207     {
 208         if (global_settings.autocreatebookmark == BOOKMARK_RECENT_ONLY_ASK)
 209             return write_bookmark(false, bookmark);
 210         else
 211             return write_bookmark(true, bookmark);
 212     }
 213     return false;
 214 }
 215
 216 /* ----------------------------------------------------------------------- */
 217 /* This function takes the current current resume information and writes   */
 218 /* that to the beginning of the bookmark file.                             */
 219 /* This file will contain N number of bookmarks in the following format:   */
 220 /* resume_index*resume_offset*resume_seed*resume_first_index*              */
 221 /* resume_file*milliseconds*MP3 Title*                                     */
 222 /* ------------------------------------------------------------------------*/
 223 static bool write_bookmark(bool create_bookmark_file, const char *bookmark)
 224 {
 225     bool   success=false;
 226     if (!bookmark)
 227        return false; /* something didn't happen correctly, do nothing */
 228
 229     if (global_settings.usemrb)
 230         success = add_bookmark(RECENT_BOOKMARK_FILE, bookmark, true);
 231
 232
 233     /* writing the bookmark */
 234     if (create_bookmark_file)
 235     {
 236         char* name = playlist_get_name(NULL, global_temp_buffer,
 237                                        sizeof(global_temp_buffer));
 238         if (generate_bookmark_file_name(name))
 239         {
 240             success = add_bookmark(global_bookmark_file_name, bookmark, false);
 241         }
 242     }
 243
 244     splash(HZ, success ? ID2P(LANG_BOOKMARK_CREATE_SUCCESS)
 245            : ID2P(LANG_BOOKMARK_CREATE_FAILURE));
 246
 247     return true;
 248 }
 249
 250 /* ----------------------------------------------------------------------- */
 251 /* This function adds a bookmark to a file.                                */
 252 /* ------------------------------------------------------------------------*/
 253 static bool add_bookmark(const char* bookmark_file_name, const char* bookmark,
 254                          bool most_recent)
 255 {
 256     int    temp_bookmark_file = 0;
 257     int    bookmark_file = 0;
 258     int    bookmark_count = 0;
 259     char*  playlist = NULL;
 260     char*  cp;
 261     char*  tmp;
 262     int    len = 0;
 263     bool   unique = false;
 264
 265     /* Opening up a temp bookmark file */
 266     snprintf(global_temp_buffer, sizeof(global_temp_buffer),
 267              "%s.tmp", bookmark_file_name);
 268     temp_bookmark_file = open(global_temp_buffer,
 269                               O_WRONLY | O_CREAT | O_TRUNC, 0666);
 270     if (temp_bookmark_file < 0)
 271         return false; /* can't open the temp file */
 272
 273     if (most_recent && (global_settings.usemrb == BOOKMARK_UNIQUE_ONLY))
 274     {
 275         playlist = strchr(bookmark,'/');
 276         cp = strrchr(bookmark,';');
 277         len = cp - playlist;
 278         unique = true;
 279     }
 280
 281     /* Writing the new bookmark to the begining of the temp file */
 282     write(temp_bookmark_file, bookmark, strlen(bookmark));
 283     write(temp_bookmark_file, "\n", 1);
 284     bookmark_count++;
 285
 286     /* Reading in the previous bookmarks and writing them to the temp file */
 287     bookmark_file = open(bookmark_file_name, O_RDONLY);
 288     if (bookmark_file >= 0)
 289     {
 290         while (read_line(bookmark_file, global_read_buffer,
 291                          sizeof(global_read_buffer)) > 0)
 292         {
 293             /* The MRB has a max of MAX_BOOKMARKS in it */
 294             /* This keeps it from getting too large */
 295             if (most_recent && (bookmark_count >= MAX_BOOKMARKS))
 296                 break;
 297
 298             cp  = strchr(global_read_buffer,'/');
 299             tmp = strrchr(global_read_buffer,';');
 300             if (parse_bookmark(global_read_buffer, false) &&
 301                (!unique || len != tmp -cp || strncmp(playlist,cp,len)))
 302             {
 303                 bookmark_count++;
 304                 write(temp_bookmark_file, global_read_buffer,
 305                       strlen(global_read_buffer));
 306                 write(temp_bookmark_file, "\n", 1);
 307             }
 308         }
 309         close(bookmark_file);
 310     }
 311     close(temp_bookmark_file);
 312
 313     remove(bookmark_file_name);
 314     rename(global_temp_buffer, bookmark_file_name);
 315
 316     return true;
 317 }
 318
 319
 320 /* ----------------------------------------------------------------------- */
 321 /* This function takes the system resume data and formats it into a valid  */
 322 /* bookmark.                                                               */
 323 /* ----------------------------------------------------------------------- */
 324 static char* create_bookmark()
 325 {
 326     int resume_index = 0;
 327     char *file;
 328
 329     if (!is_bookmarkable_state())
 330         return NULL; /* something didn't happen correctly, do nothing */
 331
 332     /* grab the currently playing track */
 333     struct mp3entry *id3 = audio_current_track();
 334     if(!id3)
 335         return NULL;
 336
 337     /* Get some basic resume information */
 338     /* queue_resume and queue_resume_index are not used and can be ignored.*/
 339     playlist_get_resume_info(&resume_index);
 340
 341     /* Get the currently playing file minus the path */
 342     /* This is used when displaying the available bookmarks */
 343     file = strrchr(id3->path,'/');
 344     if(NULL == file)
 345         return NULL;
 346
 347     /* create the bookmark */
 348     snprintf(global_bookmark, sizeof(global_bookmark),
 349              /* new optional bookmark token descriptors should be inserted
 350                 just before the "%s;%s" in this line... */
 351 #if CONFIG_CODEC == SWCODEC && defined(HAVE_PITCHSCREEN)
 352              ">%d;%d;%ld;%d;%ld;%d;%d;%ld;%ld;%s;%s",
 353 #else
 354              ">%d;%d;%ld;%d;%ld;%d;%d;%s;%s",
 355 #endif
 356              /* ... their flags should go here ... */
 357 #if CONFIG_CODEC == SWCODEC && defined(HAVE_PITCHSCREEN)
 358              BM_PITCH | BM_SPEED,
 359 #else
 360              0,
 361 #endif
 362              resume_index,
 363              id3->offset,
 364              playlist_get_seed(NULL),
 365              id3->elapsed,
 366              global_settings.repeat_mode,
 367              global_settings.playlist_shuffle,
 368              /* ...and their values should go here */
 369 #if CONFIG_CODEC == SWCODEC && defined(HAVE_PITCHSCREEN)
 370              (long)sound_get_pitch(),
 371              (long)dsp_get_timestretch(),
 372 #endif
 373              /* more mandatory tokens */
 374              playlist_get_name(NULL, global_temp_buffer,
 375                 sizeof(global_temp_buffer)),
 376              file+1);
 377
 378     /* checking to see if the bookmark is valid */
 379     if (parse_bookmark(global_bookmark, false))
 380         return global_bookmark;
 381     else
 382         return NULL;
 383 }
 384
 385 /* ----------------------------------------------------------------------- */
 386 /* This function will determine if an autoload is necessary.  This is an   */
 387 /* interface function.                                                     */
 388 /* ------------------------------------------------------------------------*/
 389 bool bookmark_autoload(const char* file)
 390 {
 391     if(global_settings.autoloadbookmark == BOOKMARK_NO)
 392         return false;
 393
 394     /*Checking to see if a bookmark file exists.*/
 395     if(!generate_bookmark_file_name(file))
 396     {
 397         return false;
 398     }
 399
 400     if(!file_exists(global_bookmark_file_name))
 401         return false;
 402
 403     if(global_settings.autoloadbookmark == BOOKMARK_YES)
 404     {
 405         return bookmark_load(global_bookmark_file_name, true);
 406     }
 407     else
 408     {
 409         char* bookmark = select_bookmark(global_bookmark_file_name, true);
 410
 411         if (bookmark != NULL)
 412         {
 413             if (!play_bookmark(bookmark))
 414             {
 415                 /* Selected bookmark not found. */
 416                 splash(HZ*2, ID2P(LANG_NOTHING_TO_RESUME));
 417             }
 418
 419             /* Act as if autoload was done even if it failed, since the
 420              * user did make an active selection.
 421              */
 422             return true;
 423         }
 424
 425         return false;
 426     }
 427 }
 428
 429 /* ----------------------------------------------------------------------- */
 430 /* This function loads the bookmark information into the resume memory.    */
 431 /* This is an interface function.                                          */
 432 /* ------------------------------------------------------------------------*/
 433 bool bookmark_load(const char* file, bool autoload)
 434 {
 435     int  fd;
 436     char* bookmark = NULL;
 437
 438     if(autoload)
 439     {
 440         fd = open(file, O_RDONLY);
 441         if(fd >= 0)
 442         {
 443             if(read_line(fd, global_read_buffer, sizeof(global_read_buffer)) > 0)
 444                 bookmark=global_read_buffer;
 445             close(fd);
 446         }
 447     }
 448     else
 449     {
 450         /* This is not an auto-load, so list the bookmarks */
 451         bookmark = select_bookmark(file, false);
 452     }
 453
 454     if (bookmark != NULL)
 455     {
 456         if (!play_bookmark(bookmark))
 457         {
 458             /* Selected bookmark not found. */
 459             if (!autoload)
 460             {
 461                 splash(HZ*2, ID2P(LANG_NOTHING_TO_RESUME));
 462             }
 463
 464             return false;
 465         }
 466     }
 467
 468     return true;
 469 }
 470
 471
 472 static int get_bookmark_count(const char* bookmark_file_name)
 473 {
 474     int read_count = 0;
 475     int file = open(bookmark_file_name, O_RDONLY);
 476
 477     if(file < 0)
 478         return -1;
 479
 480     while(read_line(file, global_read_buffer, sizeof(global_read_buffer)) > 0)
 481     {
 482         read_count++;
 483     }
 484
 485     close(file);
 486     return read_count;
 487 }
 488
 489 static int buffer_bookmarks(struct bookmark_list* bookmarks, int first_line)
 490 {
 491     char* dest = ((char*) bookmarks) + bookmarks->buffer_size - 1;
 492     int read_count = 0;
 493     int file = open(bookmarks->filename, O_RDONLY);
 494
 495     if (file < 0)
 496     {
 497         return -1;
 498     }
 499
 500     if ((first_line != 0) && ((size_t) filesize(file) < bookmarks->buffer_size
 501             - sizeof(*bookmarks) - (sizeof(char*) * bookmarks->total_count)))
 502     {
 503         /* Entire file fits in buffer */
 504         first_line = 0;
 505     }
 506
 507     bookmarks->start = first_line;
 508     bookmarks->count = 0;
 509     bookmarks->reload = false;
 510
 511     while(read_line(file, global_read_buffer, sizeof(global_read_buffer)) > 0)
 512     {
 513         read_count++;
 514
 515         if (read_count >= first_line)
 516         {
 517             dest -= strlen(global_read_buffer) + 1;
 518
 519             if (dest < ((char*) bookmarks) + sizeof(*bookmarks)
 520                 + (sizeof(char*) * (bookmarks->count + 1)))
 521             {
 522                 break;
 523             }
 524
 525             strcpy(dest, global_read_buffer);
 526             bookmarks->items[bookmarks->count] = dest;
 527             bookmarks->count++;
 528         }
 529     }
 530
 531     close(file);
 532     return bookmarks->start + bookmarks->count;
 533 }
 534
 535 static const char* get_bookmark_info(int list_index,
 536                                      void* data,
 537                                      char *buffer,
 538                                      size_t buffer_len)
 539 {
 540     struct bookmark_list* bookmarks = (struct bookmark_list*) data;
 541     int     index = list_index / 2;
 542
 543     if (bookmarks->show_dont_resume)
 544     {
 545         if (index == 0)
 546         {
 547             return list_index % 2 == 0
 548                 ? (char*) str(LANG_BOOKMARK_DONT_RESUME) : " ";
 549         }
 550
 551         index--;
 552     }
 553
 554     if (bookmarks->reload || (index >= bookmarks->start + bookmarks->count)
 555         || (index < bookmarks->start))
 556     {
 557         int read_index = index;
 558
 559         /* Using count as a guide on how far to move could possibly fail
 560          * sometimes. Use byte count if that is a problem?
 561          */
 562
 563         if (read_index != 0)
 564         {
 565             /* Move count * 3 / 4 items in the direction the user is moving,
 566              * but don't go too close to the end.
 567              */
 568             int offset = bookmarks->count;
 569             int max = bookmarks->total_count - (bookmarks->count / 2);
 570
 571             if (read_index < bookmarks->start)
 572             {
 573                 offset *= 3;
 574             }
 575
 576             read_index = index - offset / 4;
 577
 578             if (read_index > max)
 579             {
 580                 read_index = max;
 581             }
 582
 583             if (read_index < 0)
 584             {
 585                 read_index = 0;
 586             }
 587         }
 588
 589         if (buffer_bookmarks(bookmarks, read_index) <= index)
 590         {
 591             return "";
 592         }
 593     }
 594
 595     if (!parse_bookmark(bookmarks->items[index - bookmarks->start], true))
 596     {
 597         return list_index % 2 == 0 ? (char*) str(LANG_BOOKMARK_INVALID) : " ";
 598     }
 599
 600     if (list_index % 2 == 0)
 601     {
 602         char *name;
 603         char *format;
 604         int len = strlen(global_temp_buffer);
 605
 606         if (bookmarks->show_playlist_name && len > 0)
 607         {
 608             name = global_temp_buffer;
 609             len--;
 610
 611             if (name[len] != '/')
 612             {
 613                 strrsplt(name, '.');
 614             }
 615             else if (len > 1)
 616             {
 617                 name[len] = '\0';
 618             }
 619
 620             if (len > 1)
 621             {
 622                 name = strrsplt(name, '/');
 623             }
 624
 625             format = "%s : %s";
 626         }
 627         else
 628         {
 629             name = global_filename;
 630             format = "%s";
 631         }
 632
 633         strrsplt(global_filename, '.');
 634         snprintf(buffer, buffer_len, format, name, global_filename);
 635         return buffer;
 636     }
 637     else
 638     {
 639         char time_buf[32];
 640
 641         format_time(time_buf, sizeof(time_buf), bm.resume_time);
 642         snprintf(buffer, buffer_len, "%s, %d%s", time_buf, bm.resume_index + 1,
 643             bm.shuffle ? (char*) str(LANG_BOOKMARK_SHUFFLE) : "");
 644         return buffer;
 645     }
 646 }
 647
 648 static int bookmark_list_voice_cb(int list_index, void* data)
 649 {
 650     struct bookmark_list* bookmarks = (struct bookmark_list*) data;
 651     int index = list_index / 2;
 652
 653     if (bookmarks->show_dont_resume)
 654     {
 655         if (index == 0)
 656             return talk_id(LANG_BOOKMARK_DONT_RESUME, false);
 657         index--;
 658     }
 659     say_bookmark(bookmarks->items[index - bookmarks->start], index,
 660                  bookmarks->show_playlist_name);
 661     return 0;
 662 }
 663
 664 /* ----------------------------------------------------------------------- */
 665 /* This displays a the bookmarks in a file and allows the user to          */
 666 /* select one to play.                                                     */
 667 /* ------------------------------------------------------------------------*/
 668 static char* select_bookmark(const char* bookmark_file_name, bool show_dont_resume)
 669 {
 670     struct bookmark_list* bookmarks;
 671     struct gui_synclist list;
 672     int item = 0;
 673     int action;
 674     size_t size;
 675     bool exit = false;
 676     bool refresh = true;
 677
 678     bookmarks = plugin_get_buffer(&size);
 679     bookmarks->buffer_size = size;
 680     bookmarks->show_dont_resume = show_dont_resume;
 681     bookmarks->filename = bookmark_file_name;
 682     bookmarks->start = 0;
 683     bookmarks->show_playlist_name
 684         = strcmp(bookmark_file_name, RECENT_BOOKMARK_FILE) == 0;
 685     gui_synclist_init(&list, &get_bookmark_info, (void*) bookmarks, false, 2, NULL);
 686     if(global_settings.talk_menu)
 687         gui_synclist_set_voice_callback(&list, bookmark_list_voice_cb);
 688     gui_synclist_set_title(&list, str(LANG_BOOKMARK_SELECT_BOOKMARK),
 689         Icon_Bookmark);
 690
 691     while (!exit)
 692     {
 693
 694         if (refresh)
 695         {
 696             int count = get_bookmark_count(bookmark_file_name);
 697             bookmarks->total_count = count;
 698
 699             if (bookmarks->total_count < 1)
 700             {
 701                 /* No more bookmarks, delete file and exit */
 702                 splash(HZ, ID2P(LANG_BOOKMARK_LOAD_EMPTY));
 703                 remove(bookmark_file_name);
 704                 return NULL;
 705             }
 706
 707             if (bookmarks->show_dont_resume)
 708             {
 709                 count++;
 710                 item++;
 711             }
 712
 713             gui_synclist_set_nb_items(&list, count * 2);
 714
 715             if (item >= count)
 716             {
 717                 /* Selected item has been deleted */
 718                 item = count - 1;
 719                 gui_synclist_select_item(&list, item * 2);
 720             }
 721
 722             buffer_bookmarks(bookmarks, bookmarks->start);
 723             gui_synclist_draw(&list);
 724             cond_talk_ids_fq(VOICE_EXT_BMARK);
 725             gui_synclist_speak_item(&list);
 726             refresh = false;
 727         }
 728
 729         list_do_action(CONTEXT_BOOKMARKSCREEN, HZ / 2,
 730                        &list, &action, LIST_WRAP_UNLESS_HELD);
 731         item = gui_synclist_get_sel_pos(&list) / 2;
 732
 733         if (bookmarks->show_dont_resume)
 734         {
 735             item--;
 736         }
 737
 738         if (action == ACTION_STD_CONTEXT)
 739         {
 740             MENUITEM_STRINGLIST(menu_items, ID2P(LANG_BOOKMARK_CONTEXT_MENU),
 741                 NULL, ID2P(LANG_BOOKMARK_CONTEXT_RESUME),
 742                 ID2P(LANG_BOOKMARK_CONTEXT_DELETE));
 743             static const int menu_actions[] =
 744             {
 745                 ACTION_STD_OK, ACTION_BMS_DELETE
 746             };
 747             int selection = do_menu(&menu_items, NULL, NULL, false);
 748
 749             refresh = true;
 750
 751             if (selection >= 0 && selection <=
 752                 (int) (sizeof(menu_actions) / sizeof(menu_actions[0])))
 753             {
 754                 action = menu_actions[selection];
 755             }
 756         }
 757
 758         switch (action)
 759         {
 760         case ACTION_STD_OK:
 761             if (item >= 0)
 762             {
 763                 talk_shutup();
 764                 return bookmarks->items[item - bookmarks->start];
 765             }
 766
 767             /* Else fall through */
 768
 769         case ACTION_TREE_WPS:
 770         case ACTION_STD_CANCEL:
 771             exit = true;
 772             break;
 773
 774         case ACTION_BMS_DELETE:
 775             if (item >= 0)
 776             {
 777                 const char *lines[]={
 778                     ID2P(LANG_REALLY_DELETE)
 779                 };
 780                 const char *yes_lines[]={
 781                     ID2P(LANG_DELETING)
 782                 };
 783
 784                 const struct text_message message={lines, 1};
 785                 const struct text_message yes_message={yes_lines, 1};
 786
 787                 if(gui_syncyesno_run(&message, &yes_message, NULL)==YESNO_YES)
 788                 {
 789                     delete_bookmark(bookmark_file_name, item);
 790                     bookmarks->reload = true;
 791                 }
 792                 refresh = true;
 793             }
 794             break;
 795
 796         default:
 797             if (default_event_handler(action) == SYS_USB_CONNECTED)
 798             {
 799                 exit = true;
 800             }
 801
 802             break;
 803         }
 804     }
 805
 806     talk_shutup();
 807     return NULL;
 808 }
 809
 810 /* ----------------------------------------------------------------------- */
 811 /* This function takes a location in a bookmark file and deletes that      */
 812 /* bookmark.                                                               */
 813 /* ------------------------------------------------------------------------*/
 814 static bool delete_bookmark(const char* bookmark_file_name, int bookmark_id)
 815 {
 816     int temp_bookmark_file = 0;
 817     int bookmark_file = 0;
 818     int bookmark_count = 0;
 819
 820     /* Opening up a temp bookmark file */
 821     snprintf(global_temp_buffer, sizeof(global_temp_buffer),
 822              "%s.tmp", bookmark_file_name);
 823     temp_bookmark_file = open(global_temp_buffer,
 824                               O_WRONLY | O_CREAT | O_TRUNC, 0666);
 825
 826     if (temp_bookmark_file < 0)
 827         return false; /* can't open the temp file */
 828
 829     /* Reading in the previous bookmarks and writing them to the temp file */
 830     bookmark_file = open(bookmark_file_name, O_RDONLY);
 831     if (bookmark_file >= 0)
 832     {
 833         while (read_line(bookmark_file, global_read_buffer,
 834                          sizeof(global_read_buffer)) > 0)
 835         {
 836             if (bookmark_id != bookmark_count)
 837             {
 838                 write(temp_bookmark_file, global_read_buffer,
 839                       strlen(global_read_buffer));
 840                 write(temp_bookmark_file, "\n", 1);
 841             }
 842             bookmark_count++;
 843         }
 844         close(bookmark_file);
 845     }
 846     close(temp_bookmark_file);
 847
 848     remove(bookmark_file_name);
 849     rename(global_temp_buffer, bookmark_file_name);
 850
 851     return true;
 852 }
 853
 854 /* ----------------------------------------------------------------------- */
 855 /* This function parses a bookmark, says the voice UI part of it.          */
 856 /* ------------------------------------------------------------------------*/
 857 static void say_bookmark(const char* bookmark,
 858                          int bookmark_id, bool show_playlist_name)
 859 {
 860     if (!parse_bookmark(bookmark, true))
 861     {
 862         talk_id(LANG_BOOKMARK_INVALID, false);
 863         return;
 864     }
 865
 866     talk_number(bookmark_id + 1, false);
 867
 868 #if CONFIG_CODEC == SWCODEC
 869     bool is_dir = (global_temp_buffer[0]
 870               && global_temp_buffer[strlen(global_temp_buffer)-1] == '/');
 871
 872     /* HWCODEC cannot enqueue voice file entries and .talk thumbnails
 873        together, because there is no guarantee that the same mp3
 874        parameters are used. */
 875     if(show_playlist_name)
 876     {   /* It's useful to know which playlist this is */
 877         if(is_dir)
 878             talk_dir_or_spell(global_temp_buffer,
 879                               TALK_IDARRAY(VOICE_DIR), true);
 880         else talk_file_or_spell(NULL, global_temp_buffer,
 881                                 TALK_IDARRAY(LANG_PLAYLIST), true);
 882     }
 883 #else
 884     (void)show_playlist_name;
 885 #endif
 886
 887     if(bm.shuffle)
 888         talk_id(LANG_SHUFFLE, true);
 889
 890     talk_id(VOICE_BOOKMARK_SELECT_INDEX_TEXT, true);
 891     talk_number(bm.resume_index + 1, true);
 892     talk_id(LANG_TIME, true);
 893     talk_value(bm.resume_time / 1000, UNIT_TIME, true);
 894
 895 #if CONFIG_CODEC == SWCODEC
 896     /* Track filename */
 897     if(is_dir)
 898         talk_file_or_spell(global_temp_buffer, global_filename,
 899                            TALK_IDARRAY(VOICE_FILE), true);
 900     else
 901     {   /* Unfortunately if this is a playlist, we do not know in which
 902            directory the file is and therefore cannot find the track's
 903            .talk file. */
 904         talk_id(VOICE_FILE, true);
 905         talk_spell(global_filename, true);
 906     }
 907 #endif
 908 }
 909
 910 /* ----------------------------------------------------------------------- */
 911 /* This function parses a bookmark and then plays it.                      */
 912 /* ------------------------------------------------------------------------*/
 913 static bool play_bookmark(const char* bookmark)
 914 {
 915 #if CONFIG_CODEC == SWCODEC && defined(HAVE_PITCHSCREEN)
 916     /* preset pitch and speed to 100% in case bookmark doesn't have info */
 917     bm.pitch = sound_get_pitch();
 918     bm.speed = dsp_get_timestretch();
 919 #endif
 920
 921     if (parse_bookmark(bookmark, true))
 922     {
 923         global_settings.repeat_mode = bm.repeat_mode;
 924         global_settings.playlist_shuffle = bm.shuffle;
 925 #if CONFIG_CODEC == SWCODEC && defined(HAVE_PITCHSCREEN)
 926         sound_set_pitch(bm.pitch);
 927         dsp_set_timestretch(bm.speed);
 928 #endif
 929         if (!warn_on_pl_erase())
 930             return false;
 931         return bookmark_play(global_temp_buffer, bm.resume_index,
 932             bm.resume_offset, bm.resume_seed, global_filename);
 933     }
 934
 935     return false;
 936 }
 937
 938 static const char* skip_token(const char* s)
 939 {
 940     while (*s && *s != ';')
 941     {
 942         s++;
 943     }
 944
 945     if (*s)
 946     {
 947         s++;
 948     }
 949
 950     return s;
 951 }
 952
 953 static const char* int_token(const char* s, int* dest)
 954 {
 955     *dest = atoi(s);
 956     return skip_token(s);
 957 }
 958
 959 static const char* long_token(const char* s, long* dest)
 960 {
 961     *dest = atoi(s);    /* Should be atol, but we don't have it. */
 962     return skip_token(s);
 963 }
 964
 965 /* ----------------------------------------------------------------------- */
 966 /* This function takes a bookmark and parses it.  This function also       */
 967 /* validates the bookmark.  The parse_filenames flag indicates whether     */
 968 /* the filename tokens are to be extracted.                                */
 969 /* ----------------------------------------------------------------------- */
 970 static bool parse_bookmark(const char *bookmark, const bool parse_filenames)
 971 {
 972     const char* s = bookmark;
 973     const char* end;
 974
 975 #define GET_INT_TOKEN(var)  s = int_token(s, &var)
 976 #define GET_LONG_TOKEN(var)  s = long_token(s, &var)
 977 #define GET_BOOL_TOKEN(var) var = (atoi(s)!=0); s = skip_token(s)
 978
 979     /* if new format bookmark, extract the optional content flags,
 980        otherwise treat as an original format bookmark */
 981     int opt_flags = 0;
 982     bool new_format = (strchr(s, '>') == s);
 983     if (new_format)
 984     {
 985         s++;
 986         GET_INT_TOKEN(opt_flags);
 987     }
 988
 989     /* extract all original bookmark tokens */
 990     GET_INT_TOKEN(bm.resume_index);
 991     GET_LONG_TOKEN(bm.resume_offset);
 992     GET_INT_TOKEN(bm.resume_seed);
 993     if (!new_format)    /* skip deprecated token */
 994         s = skip_token(s);
 995     GET_LONG_TOKEN(bm.resume_time);
 996     GET_INT_TOKEN(bm.repeat_mode);
 997     GET_BOOL_TOKEN(bm.shuffle);
 998
 999     /* extract all optional bookmark tokens */
1000     if (opt_flags & BM_PITCH)
1001         GET_INT_TOKEN(bm.pitch);
1002     if (opt_flags & BM_SPEED)
1003         GET_INT_TOKEN(bm.speed);
1004
1005     if (*s == 0)
1006     {
1007         return false;
1008     }
1009
1010     end = strchr(s, ';');
1011
1012     /* extract file names */
1013     if (parse_filenames)
1014     {
1015         size_t len = (end == NULL) ? strlen(s) : (size_t) (end - s);
1016         len = MIN(TEMP_BUF_SIZE - 1, len);
1017         strlcpy(global_temp_buffer, s, len + 1);
1018
1019         if (end != NULL)
1020         {
1021             end++;
1022             strlcpy(global_filename, end, MAX_PATH);
1023         }
1024      }
1025
1026     return true;
1027 }
1028
1029 /* ----------------------------------------------------------------------- */
1030 /* This function is used by multiple functions and is used to generate a   */
1031 /* bookmark named based off of the input.                                  */
1032 /* Changing this function could result in how the bookmarks are stored.    */
1033 /* it would be here that the centralized/decentralized bookmark code       */
1034 /* could be placed.                                                        */
1035 /* ----------------------------------------------------------------------- */
1036 static bool generate_bookmark_file_name(const char *in)
1037 {
1038     int len = strlen(in);
1039
1040     /* if this is a root dir MP3, rename the bookmark file root_dir.bmark */
1041     /* otherwise, name it based on the in variable */
1042     if (!strcmp("/", in))
1043         strcpy(global_bookmark_file_name, "/root_dir.bmark");
1044     else
1045     {
1046 #ifdef HAVE_MULTIVOLUME
1047         /* The "root" of an extra volume need special handling too. */
1048         bool volume_root = (strip_volume(in, global_bookmark_file_name) &&
1049             !strcmp("/", global_bookmark_file_name));
1050 #endif
1051
1052         strcpy(global_bookmark_file_name, in);
1053         if(global_bookmark_file_name[len-1] == '/')
1054             len--;
1055 #ifdef HAVE_MULTIVOLUME
1056         if (volume_root)
1057             strcpy(&global_bookmark_file_name[len], "/volume_dir.bmark");
1058         else
1059 #endif
1060             strcpy(&global_bookmark_file_name[len], ".bmark");
1061     }
1062
1063     return true;
1064 }
1065
1066 /* ----------------------------------------------------------------------- */
1067 /* Returns true if a bookmark file exists for the current playlist         */
1068 /* ----------------------------------------------------------------------- */
1069 bool bookmark_exists(void)
1070 {
1071     bool exist=false;
1072
1073     if(is_bookmarkable_state())
1074     {
1075         char* name = playlist_get_name(NULL, global_temp_buffer,
1076                                        sizeof(global_temp_buffer));
1077         if (generate_bookmark_file_name(name))
1078         {
1079             exist = file_exists(global_bookmark_file_name);
1080         }
1081     }
1082
1083     return exist;
1084 }
1085
1086 /* ----------------------------------------------------------------------- */
1087 /* Checks the current state of the system and returns true if it is in a   */
1088 /* bookmarkable state.                                                     */
1089 /* ----------------------------------------------------------------------- */
1090 static bool is_bookmarkable_state(void)
1091 {
1092     int resume_index = 0;
1093
1094     if (!(audio_status() && audio_current_track()) ||
1095         /* no track playing */
1096        (playlist_get_resume_info(&resume_index) == -1) ||
1097         /* invalid queue info */
1098        (playlist_modified(NULL)))
1099         /* can't bookmark while in the queue */
1100     {
1101         return false;
1102     }
1103
1104     return true;
1105 }
1106