apps/scrobbler.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006-2008 Robert Keevil
  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 /*
  22 Audioscrobbler spec at:
  23 http://www.audioscrobbler.net/wiki/Portable_Player_Logging
  24 */
  25
  26 #include <stdio.h>
  27 #include <config.h>
  28 #include "file.h"
  29 #include "logf.h"
  30 #include "metadata.h"
  31 #include "kernel.h"
  32 #include "audio.h"
  33 #include "buffer.h"
  34 #include "settings.h"
  35 #include "ata_idle_notify.h"
  36 #include "filefuncs.h"
  37 #include "appevents.h"
  38
  39 #if CONFIG_RTC
  40 #include "time.h"
  41 #include "timefuncs.h"
  42 #endif
  43
  44 #include "scrobbler.h"
  45
  46 #define SCROBBLER_VERSION "1.1"
  47
  48 #if CONFIG_RTC
  49 #define SCROBBLER_FILE "/.scrobbler.log"
  50 #else
  51 #define SCROBBLER_FILE "/.scrobbler-timeless.log"
  52 #endif
  53
  54 /* increment this on any code change that effects output */
  55 #define SCROBBLER_REVISION " $Revision$"
  56
  57 #define SCROBBLER_MAX_CACHE 32
  58 /* longest entry I've had is 323, add a safety margin */
  59 #define SCROBBLER_CACHE_LEN 512
  60
  61 static char* scrobbler_cache;
  62
  63 static int cache_pos;
  64 static struct mp3entry scrobbler_entry;
  65 static bool pending = false;
  66 static bool scrobbler_initialised = false;
  67 #if CONFIG_RTC
  68 static time_t timestamp;
  69 #else
  70 static unsigned long timestamp;
  71 #endif
  72
  73 /* Crude work-around for Archos Sims - return a set amount */
  74 #if (CONFIG_CODEC != SWCODEC) && (CONFIG_PLATFORM & PLATFORM_HOSTED)
  75 unsigned long audio_prev_elapsed(void)
  76 {
  77     return 120000;
  78 }
  79 #endif
  80
  81 static void write_cache(void)
  82 {
  83     int i;
  84     int fd;
  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, 0666);
  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 void scrobbler_flush_callback(void *data)
 132 {
 133     (void)data;
 134     if (scrobbler_initialised && cache_pos)
 135         write_cache();
 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\t%s\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                 scrobbler_entry.mb_track_id?scrobbler_entry.mb_track_id:"");
 164     } else {
 165         ret = snprintf(scrobbler_cache+(SCROBBLER_CACHE_LEN*cache_pos),
 166                 SCROBBLER_CACHE_LEN,
 167                 "%s\t%s\t%s\t\t%d\t%c\t%ld\t%s\n",
 168                 scrobbler_entry.artist,
 169                 scrobbler_entry.album?scrobbler_entry.album:"",
 170                 scrobbler_entry.title,
 171                 (int)scrobbler_entry.length/1000,
 172                 rating,
 173                 (long)timestamp,
 174                 scrobbler_entry.mb_track_id?scrobbler_entry.mb_track_id:"");
 175     }
 176
 177     if ( ret >= SCROBBLER_CACHE_LEN )
 178     {
 179         logf("SCROBBLER: entry too long:");
 180         logf("SCROBBLER: %s", scrobbler_entry.path);
 181     } else {
 182         cache_pos++;
 183         register_storage_idle_func(scrobbler_flush_callback);
 184     }
 185
 186 }
 187
 188 static void scrobbler_change_event(void *data)
 189 {
 190     struct mp3entry *id = (struct mp3entry*)data;
 191     /* add entry using the previous scrobbler_entry and timestamp */
 192     if (pending)
 193         add_to_cache(audio_prev_elapsed());
 194
 195     /*  check if track was resumed > %50 played
 196         check for blank artist or track name */
 197     if ((id->elapsed > (id->length/2)) ||
 198         (!id->artist ) || (!id->title ) )
 199     {
 200         pending = false;
 201         logf("SCROBBLER: skipping file %s", id->path);
 202     }
 203     else
 204     {
 205         logf("SCROBBLER: add pending");
 206         copy_mp3entry(&scrobbler_entry, id);
 207 #if CONFIG_RTC
 208         timestamp = mktime(get_time());
 209 #else
 210         timestamp = 0;
 211 #endif
 212         pending = true;
 213     }
 214 }
 215
 216 int scrobbler_init(void)
 217 {
 218     logf("SCROBBLER: init %d", global_settings.audioscrobbler);
 219
 220     if(!global_settings.audioscrobbler)
 221         return -1;
 222
 223     scrobbler_cache = buffer_alloc(SCROBBLER_MAX_CACHE*SCROBBLER_CACHE_LEN);
 224
 225     add_event(PLAYBACK_EVENT_TRACK_CHANGE, false, scrobbler_change_event);
 226     cache_pos = 0;
 227     pending = false;
 228     scrobbler_initialised = true;
 229
 230     return 1;
 231 }
 232
 233 void scrobbler_flush_cache(void)
 234 {
 235     if (scrobbler_initialised)
 236     {
 237         /* Add any pending entries to the cache */
 238         if(pending)
 239             add_to_cache(audio_prev_elapsed());
 240
 241         /* Write the cache to disk if needed */
 242         if (cache_pos)
 243             write_cache();
 244
 245         pending = false;
 246     }
 247 }
 248
 249 void scrobbler_shutdown(void)
 250 {
 251     scrobbler_flush_cache();
 252
 253     if (scrobbler_initialised)
 254     {
 255         remove_event(PLAYBACK_EVENT_TRACK_CHANGE, scrobbler_change_event);
 256         scrobbler_initialised = false;
 257     }
 258 }
 259
 260 void scrobbler_poweroff(void)
 261 {
 262     if (scrobbler_initialised && pending)
 263     {
 264         if ( audio_status() )
 265             add_to_cache(audio_current_track()->elapsed);
 266         else
 267             add_to_cache(audio_prev_elapsed());
 268
 269         /* scrobbler_shutdown is called later, the cache will be written
 270         *  make sure the final track isn't added twice when that happens */
 271         pending = false;
 272     }
 273 }
 274
 275 bool scrobbler_is_enabled(void)
 276 {
 277     return scrobbler_initialised;
 278 }