apps/scrobbler.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 Robert Keevil
  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 Audioscrobbler spec at:
  21 http://www.audioscrobbler.net/wiki/Portable_Player_Logging
  22 */
  23
  24 #include "file.h"
  25 #include "sprintf.h"
  26 #include "playback.h"
  27 #include "logf.h"
  28 #include "id3.h"
  29 #include "kernel.h"
  30 #include "audio.h"
  31 #include "buffer.h"
  32 #include "settings.h"
  33 #include "ata_idle_notify.h"
  34 #include "misc.h"
  35
  36 #if CONFIG_RTC
  37 #include "time.h"
  38 #include "timefuncs.h"
  39 #endif
  40
  41 #include "scrobbler.h"
  42
  43 #define SCROBBLER_VERSION "1.0"
  44
  45 #if CONFIG_RTC
  46 #define SCROBBLER_FILE "/.scrobbler.log"
  47 #else
  48 #define SCROBBLER_FILE "/.scrobbler-timeless.log"
  49 #endif
  50
  51 /* increment this on any code change that effects output */
  52 #define SCROBBLER_REVISION " $Revision$"
  53
  54 #define SCROBBLER_MAX_CACHE 32
  55 /* longest entry I've had is 323, add a safety margin */
  56 #define SCROBBLER_CACHE_LEN 512
  57
  58 static char* scrobbler_cache;
  59
  60 static int cache_pos;
  61 static struct mp3entry scrobbler_entry;
  62 static bool pending = false;
  63 static bool scrobbler_initialised = false;
  64 static bool scrobbler_ata_callback = false;
  65 #if CONFIG_RTC
  66 static time_t timestamp;
  67 #else
  68 static unsigned long timestamp;
  69 #endif
  70
  71 /* Crude work-around for Archos Sims - return a set amount */
  72 #if (CONFIG_CODEC != SWCODEC) && defined(SIMULATOR)
  73 unsigned long audio_prev_elapsed(void)
  74 {
  75     return 120000;
  76 }
  77 #endif
  78
  79 static void write_cache(void)
  80 {
  81     int i;
  82     int fd;
  83
  84     scrobbler_ata_callback = false;
  85
  86     /* If the file doesn't exist, create it.
  87     Check at each write since file may be deleted at any time */
  88     if(!file_exists(SCROBBLER_FILE))
  89     {
  90         fd = open(SCROBBLER_FILE, O_RDWR | O_CREAT);
  91         if(fd >= 0)
  92         {
  93             fdprintf(fd, "#AUDIOSCROBBLER/" SCROBBLER_VERSION "\n"
  94                          "#TZ/UNKNOWN\n"
  95 #if CONFIG_RTC
  96                          "#CLIENT/Rockbox " TARGET_NAME SCROBBLER_REVISION "\n");
  97 #else
  98                          "#CLIENT/Rockbox " TARGET_NAME SCROBBLER_REVISION " Timeless\n");
  99 #endif
 100
 101             close(fd);
 102         }
 103         else
 104         {
 105             logf("SCROBBLER: cannot create log file");
 106         }
 107     }
 108
 109     /* write the cache entries */
 110     fd = open(SCROBBLER_FILE, O_WRONLY | O_APPEND);
 111     if(fd >= 0)
 112     {
 113         logf("SCROBBLER: writing %d entries", cache_pos);
 114
 115         for ( i=0; i < cache_pos; i++ )
 116         {
 117             logf("SCROBBLER: write %d", i);
 118             fdprintf(fd, "%s", scrobbler_cache+(SCROBBLER_CACHE_LEN*i));
 119         }
 120         close(fd);
 121     }
 122     else
 123     {
 124         logf("SCROBBLER: error writing file");
 125     }
 126
 127     /* clear even if unsuccessful - don't want to overflow the buffer */
 128     cache_pos = 0;
 129 }
 130
 131 static bool scrobbler_flush_callback(void)
 132 {
 133     if (scrobbler_initialised && cache_pos)
 134         write_cache();
 135     return true;
 136 }
 137
 138 static void add_to_cache(unsigned long play_length)
 139 {
 140     if ( cache_pos >= SCROBBLER_MAX_CACHE )
 141         write_cache();
 142
 143     int ret;
 144     char rating = 'S'; /* Skipped */
 145
 146     logf("SCROBBLER: add_to_cache[%d]", cache_pos);
 147
 148     if ( play_length > (scrobbler_entry.length/2) )
 149         rating = 'L'; /* Listened */
 150
 151     if (scrobbler_entry.tracknum > 0)
 152     {
 153         ret = snprintf(scrobbler_cache+(SCROBBLER_CACHE_LEN*cache_pos),
 154                 SCROBBLER_CACHE_LEN,
 155                 "%s\t%s\t%s\t%d\t%d\t%c\t%ld\n",
 156                 scrobbler_entry.artist,
 157                 scrobbler_entry.album?scrobbler_entry.album:"",
 158                 scrobbler_entry.title,
 159                 scrobbler_entry.tracknum,
 160                 (int)scrobbler_entry.length/1000,
 161                 rating,
 162                 (long)timestamp);
 163     } else {
 164         ret = snprintf(scrobbler_cache+(SCROBBLER_CACHE_LEN*cache_pos),
 165                 SCROBBLER_CACHE_LEN,
 166                 "%s\t%s\t%s\t\t%d\t%c\t%ld\n",
 167                 scrobbler_entry.artist,
 168                 scrobbler_entry.album?scrobbler_entry.album:"",
 169                 scrobbler_entry.title,
 170                 (int)scrobbler_entry.length/1000,
 171                 rating,
 172                 (long)timestamp);
 173     }
 174
 175     if ( ret >= SCROBBLER_CACHE_LEN )
 176     {
 177         logf("SCROBBLER: entry too long:");
 178         logf("SCROBBLER: %s", scrobbler_entry.path);
 179     } else {
 180         cache_pos++;
 181         if (!scrobbler_ata_callback)
 182         {
 183             register_ata_idle_func(scrobbler_flush_callback);
 184             scrobbler_ata_callback = true;
 185         }
 186     }
 187
 188 }
 189
 190 void scrobbler_change_event(struct mp3entry *id)
 191 {
 192     /* add entry using the previous scrobbler_entry and timestamp */
 193     if (pending)
 194         add_to_cache(audio_prev_elapsed());
 195
 196     /*  check if track was resumed > %50 played
 197         check for blank artist or track name */
 198     if ((id->elapsed > (id->length/2)) ||
 199         (!id->artist ) || (!id->title ) )
 200     {
 201         pending = false;
 202         logf("SCROBBLER: skipping file %s", id->path);
 203     }
 204     else
 205     {
 206         logf("SCROBBLER: add pending");
 207         copy_mp3entry(&scrobbler_entry, id);
 208 #if CONFIG_RTC
 209         timestamp = mktime(get_time());
 210 #else
 211         timestamp = 0;
 212 #endif
 213         pending = true;
 214     }
 215 }
 216
 217 int scrobbler_init(void)
 218 {
 219     logf("SCROBBLER: init %d", global_settings.audioscrobbler);
 220
 221     if(!global_settings.audioscrobbler)
 222         return -1;
 223
 224     scrobbler_cache = buffer_alloc(SCROBBLER_MAX_CACHE*SCROBBLER_CACHE_LEN);
 225
 226     add_event(PLAYBACK_EVENT_TRACK_CHANGE, false, scrobbler_change_event);
 227     cache_pos = 0;
 228     pending = false;
 229     scrobbler_initialised = true;
 230
 231     return 1;
 232 }
 233
 234 void scrobbler_flush_cache(void)
 235 {
 236     if (scrobbler_initialised)
 237     {
 238         /* Add any pending entries to the cache */
 239         if(pending)
 240             add_to_cache(audio_prev_elapsed());
 241
 242         /* Write the cache to disk if needed */
 243         if (cache_pos)
 244             write_cache();
 245
 246         pending = false;
 247     }
 248 }
 249
 250 void scrobbler_shutdown(void)
 251 {
 252 #ifndef SIMULATOR
 253     if (scrobbler_ata_callback)
 254     {
 255         unregister_ata_idle_func(scrobbler_flush_callback, false);
 256         scrobbler_ata_callback = false;
 257     }
 258 #endif
 259
 260     scrobbler_flush_cache();
 261
 262     if (scrobbler_initialised)
 263     {
 264         remove_event(PLAYBACK_EVENT_TRACK_CHANGE, scrobbler_change_event);
 265         scrobbler_initialised = false;
 266     }
 267 }
 268
 269 void scrobbler_poweroff(void)
 270 {
 271     if (scrobbler_initialised && pending)
 272     {
 273         if ( audio_status() )
 274             add_to_cache(audio_current_track()->elapsed);
 275         else
 276             add_to_cache(audio_prev_elapsed());
 277
 278         /* scrobbler_shutdown is called later, the cache will be written
 279         *  make sure the final track isn't added twice when that happens */
 280         pending = false;
 281     }
 282 }
 283
 284 bool scrobbler_is_enabled(void)
 285 {
 286     return scrobbler_initialised;
 287 }