apps/cuesheet.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 Nicolas Pennequin, Jonathan Gordon
  11  *
  12  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <stdbool.h>
  23 #include <ctype.h>
  24 #include <string.h>
  25 #include "system.h"
  26 #include "audio.h"
  27 #include "kernel.h"
  28 #include "logf.h"
  29 #include "sprintf.h"
  30 #include "misc.h"
  31 #include "screens.h"
  32 #include "splash.h"
  33 #include "list.h"
  34 #include "action.h"
  35 #include "lang.h"
  36 #include "debug.h"
  37 #include "settings.h"
  38 #include "buffer.h"
  39 #include "plugin.h"
  40 #include "playback.h"
  41 #include "cuesheet.h"
  42
  43 #define CUE_DIR ROCKBOX_DIR "/cue"
  44
  45 struct cuesheet *curr_cue;
  46 struct cuesheet *temp_cue;
  47
  48 #if CONFIG_CODEC != SWCODEC
  49 /* special trickery because the hwcodec playback engine is in firmware/ */
  50 static bool cuesheet_handler(const char *filename)
  51 {
  52     return cuesheet_is_enabled() && look_for_cuesheet_file(filename, NULL);
  53 }
  54 #endif
  55
  56 void cuesheet_init(void)
  57 {
  58     if (global_settings.cuesheet) {
  59         curr_cue = (struct cuesheet *)buffer_alloc(sizeof(struct cuesheet));
  60         temp_cue = (struct cuesheet *)buffer_alloc(sizeof(struct cuesheet));
  61 #if CONFIG_CODEC != SWCODEC
  62         audio_set_cuesheet_callback(cuesheet_handler);
  63 #endif
  64     } else {
  65         curr_cue = NULL;
  66         temp_cue = NULL;
  67     }
  68 }
  69
  70 bool cuesheet_is_enabled(void)
  71 {
  72     return (curr_cue != NULL);
  73 }
  74
  75 bool look_for_cuesheet_file(const char *trackpath, char *found_cue_path)
  76 {
  77     /* DEBUGF("look for cue file\n"); */
  78
  79     char cuepath[MAX_PATH];
  80     char *dot, *slash;
  81
  82     slash = strrchr(trackpath, '/');
  83     if (!slash)
  84     {
  85         found_cue_path = NULL;
  86         return false;
  87     }
  88
  89     strncpy(cuepath, trackpath, MAX_PATH);
  90     dot = strrchr(cuepath, '.');
  91     strcpy(dot, ".cue");
  92
  93     if (!file_exists(cuepath))
  94     {
  95         strcpy(cuepath, CUE_DIR);
  96         strcat(cuepath, slash);
  97         char *dot = strrchr(cuepath, '.');
  98         strcpy(dot, ".cue");
  99         if (!file_exists(cuepath))
 100         {
 101             if (found_cue_path)
 102                 found_cue_path = NULL;
 103             return false;
 104         }
 105     }
 106
 107     if (found_cue_path)
 108         strncpy(found_cue_path, cuepath, MAX_PATH);
 109     return true;
 110 }
 111
 112 static char *skip_whitespace(char* buf)
 113 {
 114     char *r = buf;
 115     while (*r && isspace(*r))
 116         r++;
 117     return r;
 118 }
 119
 120
 121 static char *get_string(const char *line)
 122 {
 123     char *start, *end;
 124
 125     start = strchr(line, '"');
 126     if (!start)
 127     {
 128         start = strchr(line, ' ');
 129
 130         if (!start)
 131             return NULL;
 132     }
 133
 134     end = strchr(++start, '"');
 135     if (end)
 136         *end = '\0';
 137
 138     return start;
 139 }
 140
 141 /* parse cuesheet "file" and store the information in "cue" */
 142 bool parse_cuesheet(char *file, struct cuesheet *cue)
 143 {
 144     char line[MAX_PATH];
 145     char *s;
 146
 147     DEBUGF("cue parse\n");
 148     int fd = open(file,O_RDONLY);
 149     if (fd < 0)
 150     {
 151         /* couln't open the file */
 152         return false;
 153     }
 154
 155     /* Initialization */
 156     memset(cue, 0, sizeof(struct cuesheet));
 157     strcpy(cue->path, file);
 158     cue->curr_track = cue->tracks;
 159
 160     while ( read_line(fd,line,MAX_PATH) && cue->track_count < MAX_TRACKS )
 161     {
 162         s = skip_whitespace(line);
 163
 164         if (!strncmp(s, "TRACK", 5))
 165         {
 166             cue->track_count++;
 167         }
 168         else if (!strncmp(s, "INDEX 01", 8))
 169         {
 170             s = strchr(s,' ');
 171             s = skip_whitespace(s);
 172             s = strchr(s,' ');
 173             s = skip_whitespace(s);
 174             cue->tracks[cue->track_count-1].offset = 60*1000 * atoi(s);
 175             s = strchr(s,':') + 1;
 176             cue->tracks[cue->track_count-1].offset += 1000 * atoi(s);
 177             s = strchr(s,':') + 1;
 178             cue->tracks[cue->track_count-1].offset += 13 * atoi(s);
 179         }
 180         else if (!strncmp(s, "TITLE", 5)
 181                  || !strncmp(s, "PERFORMER", 9)
 182                  || !strncmp(s, "SONGWRITER", 10))
 183         {
 184             char *dest = NULL;
 185             char *string = get_string(s);
 186             if (!string)
 187                 break;
 188
 189             switch (*s)
 190             {
 191                 case 'T': /* TITLE */
 192                     dest = (cue->track_count <= 0) ? cue->title :
 193                             cue->tracks[cue->track_count-1].title;
 194                     break;
 195
 196                 case 'P': /* PERFORMER */
 197                     dest = (cue->track_count <= 0) ? cue->performer :
 198                         cue->tracks[cue->track_count-1].performer;
 199                     break;
 200
 201                 case 'S': /* SONGWRITER */
 202                     dest = (cue->track_count <= 0) ? cue->songwriter :
 203                             cue->tracks[cue->track_count-1].songwriter;
 204                     break;
 205             }
 206
 207             if (dest) {
 208                 dest = iso_decode(string, dest, -1, MIN(strlen(string), MAX_NAME));
 209                 *dest = '\0';
 210             }
 211         }
 212     }
 213     close(fd);
 214
 215     /* If some songs don't have performer info, we copy the cuesheet performer */
 216     int i;
 217     for (i = 0; i < cue->track_count; i++)
 218     {
 219         if (*(cue->tracks[i].performer) == '\0')
 220             strncpy(cue->tracks[i].performer, cue->performer, MAX_NAME);
 221
 222         if (*(cue->tracks[i].songwriter) == '\0')
 223             strncpy(cue->tracks[i].songwriter, cue->songwriter, MAX_NAME);
 224     }
 225
 226     return true;
 227 }
 228
 229 /* takes care of seeking to a track in a playlist
 230  * returns false if audio  isn't playing */
 231 static bool seek(unsigned long pos)
 232 {
 233     if (!(audio_status() & AUDIO_STATUS_PLAY))
 234     {
 235         return false;
 236     }
 237     else
 238     {
 239 #if (CONFIG_CODEC == SWCODEC)
 240         audio_pre_ff_rewind();
 241         audio_ff_rewind(pos);
 242 #else
 243         audio_pause();
 244         audio_ff_rewind(pos);
 245         audio_resume();
 246 #endif
 247         return true;
 248     }
 249 }
 250
 251 /* returns the index of the track currently being played
 252    and updates the information about the current track. */
 253 int cue_find_current_track(struct cuesheet *cue, unsigned long curpos)
 254 {
 255     int i=0;
 256     while (i < cue->track_count-1 && cue->tracks[i+1].offset < curpos)
 257         i++;
 258
 259     cue->curr_track_idx = i;
 260     cue->curr_track = cue->tracks + i;
 261     return i;
 262 }
 263
 264 /* callback that gives list item titles for the cuesheet browser */
 265 static char *list_get_name_cb(int selected_item,
 266                               void *data,
 267                               char *buffer,
 268                               size_t buffer_len)
 269 {
 270     struct cuesheet *cue = (struct cuesheet *)data;
 271
 272     if (selected_item & 1)
 273         snprintf(buffer, buffer_len, "%s",
 274                  cue->tracks[selected_item/2].title);
 275     else
 276         snprintf(buffer, buffer_len, "%02d. %s", selected_item/2+1,
 277                  cue->tracks[selected_item/2].performer);
 278
 279     return buffer;
 280 }
 281
 282 void browse_cuesheet(struct cuesheet *cue)
 283 {
 284     struct gui_synclist lists;
 285     int action;
 286     bool done = false;
 287     int sel;
 288     char title[MAX_PATH];
 289     char cuepath[MAX_PATH];
 290     struct mp3entry *id3 = audio_current_track();
 291
 292     snprintf(title, MAX_PATH, "%s: %s", cue->performer, cue->title);
 293     gui_synclist_init(&lists, list_get_name_cb, cue, false, 2, NULL);
 294     gui_synclist_set_nb_items(&lists, 2*cue->track_count);
 295     gui_synclist_set_title(&lists, title, 0);
 296
 297     if (id3 && *id3->path && strcmp(id3->path, "No file!"))
 298     {
 299         look_for_cuesheet_file(id3->path, cuepath);
 300     }
 301
 302     if (id3 && id3->cuesheet_type && !strcmp(cue->path, cuepath))
 303     {
 304         gui_synclist_select_item(&lists,
 305                                  2*cue_find_current_track(cue, id3->elapsed));
 306     }
 307
 308     while (!done)
 309     {
 310         gui_synclist_draw(&lists);
 311         action = get_action(CONTEXT_LIST,TIMEOUT_BLOCK);
 312         if (gui_synclist_do_button(&lists, &action, LIST_WRAP_UNLESS_HELD))
 313             continue;
 314         switch (action)
 315         {
 316             case ACTION_STD_OK:
 317                 id3 = audio_current_track();
 318                 if (id3 && *id3->path && strcmp(id3->path, "No file!"))
 319                 {
 320                     look_for_cuesheet_file(id3->path, cuepath);
 321                     if (id3->cuesheet_type && !strcmp(cue->path, cuepath))
 322                     {
 323                         sel = gui_synclist_get_sel_pos(&lists);
 324                         seek(cue->tracks[sel/2].offset);
 325                     }
 326                 }
 327                 break;
 328             case ACTION_STD_CANCEL:
 329                 done = true;
 330         }
 331     }
 332 }
 333
 334 bool display_cuesheet_content(char* filename)
 335 {
 336     size_t bufsize = 0;
 337     struct cuesheet *cue = (struct cuesheet *)plugin_get_buffer(&bufsize);
 338     if (!cue || bufsize < sizeof(struct cuesheet))
 339         return false;
 340
 341     if (!parse_cuesheet(filename, cue))
 342         return false;
 343
 344     browse_cuesheet(cue);
 345     return true;
 346 }
 347
 348 /* skips backwards or forward in the current cuesheet
 349  * the return value indicates whether we're still in a cusheet after skipping
 350  * it also returns false if we weren't in a cuesheet.
 351  * direction should be 1 or -1.
 352  */
 353 bool curr_cuesheet_skip(int direction, unsigned long curr_pos)
 354 {
 355     int track = cue_find_current_track(curr_cue, curr_pos);
 356
 357     if (direction >= 0 && track == curr_cue->track_count - 1)
 358     {
 359         /* we want to get out of the cuesheet */
 360         return false;
 361     }
 362     else
 363     {
 364         if (!(direction <= 0 && track == 0))
 365             track += direction;
 366
 367         seek(curr_cue->tracks[track].offset);
 368         return true;
 369     }
 370
 371 }
 372
 373 void cue_spoof_id3(struct cuesheet *cue, struct mp3entry *id3)
 374 {
 375     if (!cue || !cue->curr_track)
 376         return;
 377
 378     struct cue_track_info *track = cue->curr_track;
 379
 380     id3->title = *track->title ? track->title : NULL;
 381     id3->artist = *track->performer ? track->performer : NULL;
 382     id3->composer = *track->songwriter ? track->songwriter : NULL;
 383     id3->album = *cue->title ? cue->title : NULL;
 384
 385     /* if the album artist is the same as the track artist, we hide it. */
 386     if (strcmp(cue->performer, track->performer))
 387         id3->albumartist = *cue->performer ? cue->performer : NULL;
 388     else
 389         id3->albumartist = NULL;
 390
 391     int i = cue->curr_track_idx;
 392     id3->tracknum = i+1;
 393     if (id3->track_string)
 394         snprintf(id3->track_string, 10, "%d/%d", i+1, cue->track_count);
 395 }
 396
 397 #ifdef HAVE_LCD_BITMAP
 398 static inline void draw_veritcal_line_mark(struct screen * screen,
 399                                            int x, int y, int h)
 400 {
 401     screen->set_drawmode(DRMODE_COMPLEMENT);
 402     screen->vline(x, y, y+h-1);
 403 }
 404
 405 /* draw the cuesheet markers for a track of length "tracklen",
 406    between (x1,y) and (x2,y) */
 407 void cue_draw_markers(struct screen *screen, unsigned long tracklen,
 408                       int x1, int x2, int y, int h)
 409 {
 410     int i,xi;
 411     int w = x2 - x1;
 412     for (i=1; i < curr_cue->track_count; i++)
 413     {
 414         xi = x1 + (w * curr_cue->tracks[i].offset)/tracklen;
 415         draw_veritcal_line_mark(screen, xi, y, h);
 416     }
 417 }
 418 #endif