lib/service/servicemp3.cpp

   1 #ifdef HAVE_GSTREAMER
   2
   3         /* note: this requires gstreamer 0.10.x and a big list of plugins. */
   4         /* it's currently hardcoded to use a big-endian alsasink as sink. */
   5 #include <lib/base/eerror.h>
   6 #include <lib/base/object.h>
   7 #include <lib/base/ebase.h>
   8 #include <string>
   9 #include <lib/service/servicemp3.h>
  10 #include <lib/service/service.h>
  11 #include <lib/base/init_num.h>
  12 #include <lib/base/init.h>
  13 #include <gst/gst.h>
  14
  15 // eServiceFactoryMP3
  16
  17 eServiceFactoryMP3::eServiceFactoryMP3()
  18 {
  19         ePtr<eServiceCenter> sc;
  20
  21         eServiceCenter::getPrivInstance(sc);
  22         if (sc)
  23         {
  24                 std::list<std::string> extensions;
  25                 extensions.push_back("mp3");
  26                 extensions.push_back("ogg");
  27                 extensions.push_back("mpg");
  28                 extensions.push_back("vob");
  29                 extensions.push_back("wav");
  30                 extensions.push_back("wave");
  31                 extensions.push_back("mkv");
  32                 extensions.push_back("avi");
  33                 sc->addServiceFactory(eServiceFactoryMP3::id, this, extensions);
  34         }
  35
  36         m_service_info = new eStaticServiceMP3Info();
  37 }
  38
  39 eServiceFactoryMP3::~eServiceFactoryMP3()
  40 {
  41         ePtr<eServiceCenter> sc;
  42
  43         eServiceCenter::getPrivInstance(sc);
  44         if (sc)
  45                 sc->removeServiceFactory(eServiceFactoryMP3::id);
  46 }
  47
  48 DEFINE_REF(eServiceFactoryMP3)
  49
  50         // iServiceHandler
  51 RESULT eServiceFactoryMP3::play(const eServiceReference &ref, ePtr<iPlayableService> &ptr)
  52 {
  53                 // check resources...
  54         ptr = new eServiceMP3(ref.path.c_str());
  55         return 0;
  56 }
  57
  58 RESULT eServiceFactoryMP3::record(const eServiceReference &ref, ePtr<iRecordableService> &ptr)
  59 {
  60         ptr=0;
  61         return -1;
  62 }
  63
  64 RESULT eServiceFactoryMP3::list(const eServiceReference &, ePtr<iListableService> &ptr)
  65 {
  66         ptr=0;
  67         return -1;
  68 }
  69
  70 RESULT eServiceFactoryMP3::info(const eServiceReference &ref, ePtr<iStaticServiceInformation> &ptr)
  71 {
  72         ptr = m_service_info;
  73         return 0;
  74 }
  75
  76 RESULT eServiceFactoryMP3::offlineOperations(const eServiceReference &, ePtr<iServiceOfflineOperations> &ptr)
  77 {
  78         ptr = 0;
  79         return -1;
  80 }
  81
  82
  83 // eStaticServiceMP3Info
  84
  85
  86 // eStaticServiceMP3Info is seperated from eServiceMP3 to give information
  87 // about unopened files.
  88
  89 // probably eServiceMP3 should use this class as well, and eStaticServiceMP3Info
  90 // should have a database backend where ID3-files etc. are cached.
  91 // this would allow listing the mp3 database based on certain filters.
  92
  93 DEFINE_REF(eStaticServiceMP3Info)
  94
  95 eStaticServiceMP3Info::eStaticServiceMP3Info()
  96 {
  97 }
  98
  99 RESULT eStaticServiceMP3Info::getName(const eServiceReference &ref, std::string &name)
 100 {
 101         size_t last = ref.path.rfind('/');
 102         if (last != std::string::npos)
 103                 name = ref.path.substr(last+1);
 104         else
 105                 name = ref.path;
 106         return 0;
 107 }
 108
 109 int eStaticServiceMP3Info::getLength(const eServiceReference &ref)
 110 {
 111         return -1;
 112 }
 113
 114 // eServiceMP3
 115
 116 eServiceMP3::eServiceMP3(const char *filename): m_filename(filename), m_pump(eApp, 1)
 117 {
 118         m_stream_tags = 0;
 119         CONNECT(m_pump.recv_msg, eServiceMP3::gstPoll);
 120         GstElement *source = 0;
 121
 122         GstElement *filter = 0, *decoder = 0, *conv = 0, *flt = 0, *sink = 0; /* for audio */
 123
 124         GstElement *audio = 0, *queue_audio = 0, *video = 0, *queue_video = 0, *mpegdemux = 0;
 125
 126         m_state = stIdle;
 127         eDebug("SERVICEMP3 construct!");
 128
 129                 /* FIXME: currently, decodebin isn't possible for
 130                    video streams. in that case, make a manual pipeline. */
 131
 132         const char *ext = strrchr(filename, '.');
 133         if (!ext)
 134                 ext = filename;
 135
 136         int is_mpeg_ps = !(strcasecmp(ext, ".mpeg") && strcasecmp(ext, ".mpg") && strcasecmp(ext, ".vob") && strcasecmp(ext, ".bin"));
 137         int is_mpeg_ts = !strcasecmp(ext, ".ts");
 138         int is_matroska = !strcasecmp(ext, ".mkv");
 139         int is_avi = !strcasecmp(ext, ".avi");
 140         int is_mp3 = !strcasecmp(ext, ".mp3"); /* force mp3 instead of decodebin */
 141         int is_video = is_mpeg_ps || is_mpeg_ts || is_matroska || is_avi;
 142         int is_streaming = !strncmp(filename, "http://", 7);
 143         int is_AudioCD = !(strncmp(filename, "/autofs/", 8) || strncmp(filename+strlen(filename)-13, "/track-", 7) || strcasecmp(ext, ".wav"));
 144
 145         eDebug("filename: %s, is_mpeg_ps: %d, is_mpeg_ts: %d, is_video: %d, is_streaming: %d, is_mp3: %d, is_matroska: %d, is_avi: %d, is_AudioCD: %d", filename, is_mpeg_ps, is_mpeg_ts, is_video, is_streaming, is_mp3, is_matroska, is_avi, is_AudioCD);
 146
 147         int is_audio = !is_video;
 148
 149         int all_ok = 0;
 150
 151         m_gst_pipeline = gst_pipeline_new ("mediaplayer");
 152         if (!m_gst_pipeline)
 153                 eWarning("failed to create pipeline");
 154
 155         if (is_AudioCD)
 156         {
 157                 source = gst_element_factory_make ("cdiocddasrc", "cda-source");
 158                 if (source)
 159                         g_object_set (G_OBJECT (source), "device", "/dev/cdroms/cdrom0", NULL);
 160                 else
 161                         is_AudioCD = 0;
 162         }
 163         if ( !is_streaming && !is_AudioCD )
 164                 source = gst_element_factory_make ("filesrc", "file-source");
 165         else if ( is_streaming )
 166         {
 167                 source = gst_element_factory_make ("neonhttpsrc", "http-source");
 168                 if (source)
 169                         g_object_set (G_OBJECT (source), "automatic-redirect", TRUE, NULL);
 170         }
 171
 172         if (!source)
 173                 eWarning("failed to create %s", is_streaming ? "neonhttpsrc" : "filesrc");
 174                                 /* configure source */
 175         else if (!is_AudioCD)
 176                 g_object_set (G_OBJECT (source), "location", filename, NULL);
 177         else
 178         {
 179                 int track = atoi(filename+18);
 180                 eDebug("play audio CD track #%i",track);
 181                 if (track > 0)
 182                         g_object_set (G_OBJECT (source), "track", track, NULL);
 183         }
 184
 185         if (is_audio)
 186         {
 187                         /* filesrc -> decodebin -> audioconvert -> capsfilter -> alsasink */
 188                 const char *decodertype = is_mp3 ? "mad" : "decodebin";
 189
 190                 decoder = gst_element_factory_make (decodertype, "decoder");
 191                 if (!decoder)
 192                         eWarning("failed to create %s decoder", decodertype);
 193
 194                         /* mp3 decoding needs id3demux to extract ID3 data. 'decodebin' would do that internally. */
 195                 if (is_mp3)
 196                 {
 197                         filter = gst_element_factory_make ("id3demux", "filter");
 198                         if (!filter)
 199                                 eWarning("failed to create id3demux");
 200                 }
 201
 202                 conv = gst_element_factory_make ("audioconvert", "converter");
 203                 if (!conv)
 204                         eWarning("failed to create audioconvert");
 205
 206                 flt = gst_element_factory_make ("capsfilter", "flt");
 207                 if (!flt)
 208                         eWarning("failed to create capsfilter");
 209
 210                         /* for some reasons, we need to set the sample format to depth/width=16, because auto negotiation doesn't work. */
 211                         /* endianness, however, is not required to be set anymore. */
 212                 if (flt)
 213                 {
 214                         GstCaps *caps = gst_caps_new_simple("audio/x-raw-int", /* "endianness", G_TYPE_INT, 4321, */ "depth", G_TYPE_INT, 16, "width", G_TYPE_INT, 16, /*"channels", G_TYPE_INT, 2, */(char*)0);
 215                         g_object_set (G_OBJECT (flt), "caps", caps, (char*)0);
 216                         gst_caps_unref(caps);
 217                 }
 218
 219                 sink = gst_element_factory_make ("alsasink", "alsa-output");
 220                 if (!sink)
 221                         eWarning("failed to create osssink");
 222
 223                 if (source && decoder && conv && sink)
 224                         all_ok = 1;
 225         } else /* is_video */
 226         {
 227                         /* filesrc -> mpegdemux -> | queue_audio -> dvbaudiosink
 228                                                    | queue_video -> dvbvideosink */
 229
 230                 audio = gst_element_factory_make("dvbaudiosink", "audiosink");
 231                 queue_audio = gst_element_factory_make("queue", "queue_audio");
 232
 233                 video = gst_element_factory_make("dvbvideosink", "videosink");
 234                 queue_video = gst_element_factory_make("queue", "queue_video");
 235
 236                 if (is_mpeg_ps)
 237                         mpegdemux = gst_element_factory_make("flupsdemux", "mpegdemux");
 238                 else if (is_mpeg_ts)
 239                         mpegdemux = gst_element_factory_make("flutsdemux", "mpegdemux");
 240                 else if (is_matroska)
 241                         mpegdemux = gst_element_factory_make("matroskademux", "mpegdemux");
 242                 else if (is_avi)
 243                         mpegdemux = gst_element_factory_make("avidemux", "mpegdemux");
 244
 245                 if (!mpegdemux)
 246                 {
 247                         eDebug("fluendo mpegdemux not available, falling back to mpegdemux\n");
 248                         mpegdemux = gst_element_factory_make("mpegdemux", "mpegdemux");
 249                 }
 250
 251                 eDebug("audio: %p, queue_audio %p, video %p, queue_video %p, mpegdemux %p", audio, queue_audio, video, queue_video, mpegdemux);
 252                 if (audio && queue_audio && video && queue_video && mpegdemux)
 253                 {
 254                         g_object_set (G_OBJECT (queue_audio), "max-size-bytes", 256*1024, NULL);
 255                         g_object_set (G_OBJECT (queue_audio), "max-size-buffers", 0, NULL);
 256                         g_object_set (G_OBJECT (queue_audio), "max-size-time", (guint64)0, NULL);
 257                         g_object_set (G_OBJECT (queue_video), "max-size-buffers", 0, NULL);
 258                         g_object_set (G_OBJECT (queue_video), "max-size-bytes", 2*1024*1024, NULL);
 259                         g_object_set (G_OBJECT (queue_video), "max-size-time", (guint64)0, NULL);
 260                         all_ok = 1;
 261                 }
 262         }
 263
 264         if (m_gst_pipeline && all_ok)
 265         {
 266                 gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
 267
 268                 if (is_AudioCD)
 269                 {
 270                         queue_audio = gst_element_factory_make("queue", "queue_audio");
 271                         g_object_set (G_OBJECT (sink), "preroll-queue-len", 80, NULL);
 272                         gst_bin_add_many (GST_BIN (m_gst_pipeline), source, queue_audio, conv, sink, NULL);
 273                         gst_element_link_many(source, queue_audio, conv, sink, NULL);
 274                 }
 275                 else if (is_audio)
 276                 {
 277                         queue_audio = gst_element_factory_make("queue", "queue_audio");
 278
 279                         if (!is_mp3)
 280                         {
 281                                         /* decodebin has dynamic pads. When they get created, we connect them to the audio bin */
 282                                 g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
 283                                 g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
 284                                 g_object_set (G_OBJECT (sink), "preroll-queue-len", 80, NULL);
 285                         }
 286
 287                                 /* gst_bin will take the 'floating references' */
 288                         gst_bin_add_many (GST_BIN (m_gst_pipeline),
 289                                                 source, queue_audio, decoder, NULL);
 290
 291                         if (filter)
 292                         {
 293                                         /* id3demux also has dynamic pads, which need to be connected to the decoder (this is done in the 'gstCBfilterPadAdded' CB) */
 294                                 gst_bin_add(GST_BIN(m_gst_pipeline), filter);
 295                                 gst_element_link(source, filter);
 296                                 m_decoder = decoder;
 297                                 g_signal_connect (filter, "pad-added", G_CALLBACK(gstCBfilterPadAdded), this);
 298                         } else
 299                                         /* in decodebin's case we can just connect the source with the decodebin, and decodebin will take care about id3demux (or whatever is required) */
 300                                 gst_element_link_many(source, queue_audio, decoder, NULL);
 301
 302                                 /* create audio bin with the audioconverter, the capsfilter and the audiosink */
 303                         m_gst_audio = gst_bin_new ("audiobin");
 304
 305                         GstPad *audiopad = gst_element_get_static_pad (conv, "sink");
 306                         gst_bin_add_many(GST_BIN(m_gst_audio), conv, flt, sink, (char*)0);
 307                         gst_element_link_many(conv, flt, sink, (char*)0);
 308                         gst_element_add_pad(m_gst_audio, gst_ghost_pad_new ("sink", audiopad));
 309                         gst_object_unref(audiopad);
 310                         gst_bin_add (GST_BIN(m_gst_pipeline), m_gst_audio);
 311
 312                                 /* in mad's case, we can directly connect the decoder to the audiobin. otherwise, we do this in gstCBnewPad */
 313                         if (is_mp3)
 314                                 gst_element_link(decoder, m_gst_audio);
 315                 } else /* is_video */
 316                 {
 317                         gst_bin_add_many(GST_BIN(m_gst_pipeline), source, mpegdemux, audio, queue_audio, video, queue_video, NULL);
 318                         gst_element_link(source, mpegdemux);
 319                         gst_element_link(queue_audio, audio);
 320                         gst_element_link(queue_video, video);
 321
 322                         m_gst_audioqueue = queue_audio;
 323                         m_gst_videoqueue = queue_video;
 324
 325                         g_signal_connect(mpegdemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 326                 }
 327         } else
 328         {
 329                 if (m_gst_pipeline)
 330                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 331                 if (source)
 332                         gst_object_unref(GST_OBJECT(source));
 333                 if (decoder)
 334                         gst_object_unref(GST_OBJECT(decoder));
 335                 if (conv)
 336                         gst_object_unref(GST_OBJECT(conv));
 337                 if (sink)
 338                         gst_object_unref(GST_OBJECT(sink));
 339
 340                 if (audio)
 341                         gst_object_unref(GST_OBJECT(audio));
 342                 if (queue_audio)
 343                         gst_object_unref(GST_OBJECT(queue_audio));
 344                 if (video)
 345                         gst_object_unref(GST_OBJECT(video));
 346                 if (queue_video)
 347                         gst_object_unref(GST_OBJECT(queue_video));
 348                 if (mpegdemux)
 349                         gst_object_unref(GST_OBJECT(mpegdemux));
 350
 351                 eDebug("sorry, can't play.");
 352                 m_gst_pipeline = 0;
 353         }
 354
 355         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 356 }
 357
 358 eServiceMP3::~eServiceMP3()
 359 {
 360         if (m_state == stRunning)
 361                 stop();
 362
 363         if (m_stream_tags)
 364                 gst_tag_list_free(m_stream_tags);
 365
 366         if (m_gst_pipeline)
 367         {
 368                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 369                 eDebug("SERVICEMP3 destruct!");
 370         }
 371 }
 372
 373 DEFINE_REF(eServiceMP3);
 374
 375 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 376 {
 377         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 378         return 0;
 379 }
 380
 381 RESULT eServiceMP3::start()
 382 {
 383         assert(m_state == stIdle);
 384
 385         m_state = stRunning;
 386         if (m_gst_pipeline)
 387         {
 388                 eDebug("starting pipeline");
 389                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 390         }
 391         m_event(this, evStart);
 392         return 0;
 393 }
 394
 395 RESULT eServiceMP3::stop()
 396 {
 397         assert(m_state != stIdle);
 398         if (m_state == stStopped)
 399                 return -1;
 400         printf("MP3: %s stop\n", m_filename.c_str());
 401         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 402         m_state = stStopped;
 403         return 0;
 404 }
 405
 406 RESULT eServiceMP3::setTarget(int target)
 407 {
 408         return -1;
 409 }
 410
 411 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 412 {
 413         ptr=this;
 414         return 0;
 415 }
 416
 417 RESULT eServiceMP3::setSlowMotion(int ratio)
 418 {
 419         return -1;
 420 }
 421
 422 RESULT eServiceMP3::setFastForward(int ratio)
 423 {
 424         return -1;
 425 }
 426
 427                 // iPausableService
 428 RESULT eServiceMP3::pause()
 429 {
 430         if (!m_gst_pipeline)
 431                 return -1;
 432         gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 433         return 0;
 434 }
 435
 436 RESULT eServiceMP3::unpause()
 437 {
 438         if (!m_gst_pipeline)
 439                 return -1;
 440         gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 441         return 0;
 442 }
 443
 444         /* iSeekableService */
 445 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 446 {
 447         ptr = this;
 448         return 0;
 449 }
 450
 451 RESULT eServiceMP3::getLength(pts_t &pts)
 452 {
 453         if (!m_gst_pipeline)
 454                 return -1;
 455         if (m_state != stRunning)
 456                 return -1;
 457
 458         GstFormat fmt = GST_FORMAT_TIME;
 459         gint64 len;
 460
 461         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 462                 return -1;
 463
 464                 /* len is in nanoseconds. we have 90 000 pts per second. */
 465
 466         pts = len / 11111;
 467         return 0;
 468 }
 469
 470 RESULT eServiceMP3::seekTo(pts_t to)
 471 {
 472         if (!m_gst_pipeline)
 473                 return -1;
 474
 475                 /* convert pts to nanoseconds */
 476         gint64 time_nanoseconds = to * 11111LL;
 477         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 478                 GST_SEEK_TYPE_SET, time_nanoseconds,
 479                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 480         {
 481                 eDebug("SEEK failed");
 482                 return -1;
 483         }
 484         return 0;
 485 }
 486
 487 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 488 {
 489         if (!m_gst_pipeline)
 490                 return -1;
 491
 492         pause();
 493
 494         pts_t ppos;
 495         getPlayPosition(ppos);
 496         ppos += to * direction;
 497         if (ppos < 0)
 498                 ppos = 0;
 499         seekTo(ppos);
 500
 501         unpause();
 502
 503         return 0;
 504 }
 505
 506 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 507 {
 508         if (!m_gst_pipeline)
 509                 return -1;
 510         if (m_state != stRunning)
 511                 return -1;
 512
 513         GstFormat fmt = GST_FORMAT_TIME;
 514         gint64 len;
 515
 516         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 517                 return -1;
 518
 519                 /* len is in nanoseconds. we have 90 000 pts per second. */
 520         pts = len / 11111;
 521         return 0;
 522 }
 523
 524 RESULT eServiceMP3::setTrickmode(int trick)
 525 {
 526                 /* trickmode currently doesn't make any sense for us. */
 527         return -1;
 528 }
 529
 530 RESULT eServiceMP3::isCurrentlySeekable()
 531 {
 532         return 1;
 533 }
 534
 535 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 536 {
 537         i = this;
 538         return 0;
 539 }
 540
 541 RESULT eServiceMP3::getName(std::string &name)
 542 {
 543         name = m_filename;
 544         size_t n = name.rfind('/');
 545         if (n != std::string::npos)
 546                 name = name.substr(n + 1);
 547         return 0;
 548 }
 549
 550 int eServiceMP3::getInfo(int w)
 551 {
 552         gchar *tag = 0;
 553
 554         switch (w)
 555         {
 556         case sTitle:
 557         case sArtist:
 558         case sAlbum:
 559         case sComment:
 560         case sTracknumber:
 561         case sGenre:
 562         case sVideoType:
 563                 return resIsString;
 564         case sCurrentTitle:
 565                 tag = GST_TAG_TRACK_NUMBER;
 566                 break;
 567         case sTotalTitles:
 568                 tag = GST_TAG_TRACK_COUNT;
 569                 break;
 570         default:
 571                 return resNA;
 572         }
 573
 574         if (!m_stream_tags || !tag)
 575                 return 0;
 576
 577         guint value;
 578         if (gst_tag_list_get_uint(m_stream_tags, tag, &value))
 579                 return (int) value;
 580
 581         return 0;
 582
 583 }
 584
 585 std::string eServiceMP3::getInfoString(int w)
 586 {
 587         gchar *tag = 0;
 588         switch (w)
 589         {
 590         case sTitle:
 591                 tag = GST_TAG_TITLE;
 592                 break;
 593         case sArtist:
 594                 tag = GST_TAG_ARTIST;
 595                 break;
 596         case sAlbum:
 597                 tag = GST_TAG_ALBUM;
 598                 break;
 599         case sComment:
 600                 tag = GST_TAG_COMMENT;
 601                 break;
 602         case sTracknumber:
 603                 tag = GST_TAG_TRACK_NUMBER;
 604                 break;
 605         case sGenre:
 606                 tag = GST_TAG_GENRE;
 607                 break;
 608         case sVideoType:
 609                 tag = GST_TAG_VIDEO_CODEC;
 610                 break;
 611         default:
 612                 return "";
 613         }
 614
 615         if (!m_stream_tags || !tag)
 616                 return "";
 617
 618         gchar *value;
 619
 620         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 621         {
 622                 std::string res = value;
 623                 g_free(value);
 624                 return res;
 625         }
 626
 627         return "";
 628 }
 629
 630
 631                 void foreach(const GstTagList *list, const gchar *tag, gpointer user_data)
 632                 {
 633                         if (tag)
 634                                 eDebug("Tag: %c%c%c%c", tag[0], tag[1], tag[2], tag[3]);
 635
 636                 }
 637
 638 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 639 {
 640         if (msg)
 641         {
 642                 if (gst_message_get_structure(msg))
 643                 {
 644                         gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 645                         eDebug("gst_message: %s", string);
 646                         g_free(string);
 647                 }
 648                 else
 649                         eDebug("gst_message: %s (without structure)", GST_MESSAGE_TYPE_NAME(msg));
 650         }
 651
 652         switch (GST_MESSAGE_TYPE (msg))
 653         {
 654         case GST_MESSAGE_EOS:
 655                 m_event((iPlayableService*)this, evEOF);
 656                 break;
 657         case GST_MESSAGE_ERROR:
 658         {
 659                 gchar *debug, *sourceName;
 660                 GError *err;
 661                 GstObject *source;
 662
 663                 source = GST_MESSAGE_SRC(msg);
 664                 sourceName = gst_object_get_name(source);
 665
 666                 gst_message_parse_error (msg, &err, &debug);
 667                 g_free (debug);
 668                 eWarning("Gstreamer error: %s (%i) from %s", err->message, err->code, sourceName );
 669                 if ( err->domain == GST_STREAM_ERROR && err->code == GST_STREAM_ERROR_DECODE )
 670                 {
 671                         if ( g_strrstr(sourceName, "videosink") )
 672                                 m_event((iPlayableService*)this, evUser+11);
 673                 }
 674                 g_error_free(err);
 675                         /* TODO: signal error condition to user */
 676                 break;
 677         }
 678         case GST_MESSAGE_TAG:
 679         {
 680                 GstTagList *tags, *result;
 681                 gst_message_parse_tag(msg, &tags);
 682
 683                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 684                 if (result)
 685                 {
 686                         if (m_stream_tags)
 687                                 gst_tag_list_free(m_stream_tags);
 688                         m_stream_tags = result;
 689                 }
 690                 gst_tag_list_free(tags);
 691
 692                 m_event((iPlayableService*)this, evUpdatedInfo);
 693                 break;
 694         }
 695         default:
 696                 break;
 697         }
 698 }
 699
 700 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
 701 {
 702         eServiceMP3 *_this = (eServiceMP3*)user_data;
 703         _this->m_pump.send(1);
 704                 /* wake */
 705         return GST_BUS_PASS;
 706 }
 707
 708 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
 709 {
 710         eServiceMP3 *_this = (eServiceMP3*)user_data;
 711         gchar *name;
 712         name = gst_pad_get_name (pad);
 713         g_print ("A new pad %s was created\n", name);
 714         GstPad *sinkpad;
 715
 716         if (g_strrstr(name,"audio")) // mpegdemux uses video_nn with n=0,1,.., flupsdemux uses stream id
 717                 gst_pad_link(pad, gst_element_get_static_pad (_this->m_gst_audioqueue, "sink"));
 718         if (g_strrstr(name,"video"))
 719                 gst_pad_link(pad, gst_element_get_static_pad (_this->m_gst_videoqueue, "sink"));
 720         g_free (name);
 721 }
 722
 723 void eServiceMP3::gstCBfilterPadAdded(GstElement *filter, GstPad *pad, gpointer user_data)
 724 {
 725         eServiceMP3 *_this = (eServiceMP3*)user_data;
 726         gst_pad_link(pad, gst_element_get_static_pad (_this->m_decoder, "sink"));
 727 }
 728
 729 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
 730 {
 731         eServiceMP3 *_this = (eServiceMP3*)user_data;
 732         GstCaps *caps;
 733         GstStructure *str;
 734         GstPad *audiopad;
 735
 736         /* only link once */
 737         audiopad = gst_element_get_static_pad (_this->m_gst_audio, "sink");
 738         if ( !audiopad || GST_PAD_IS_LINKED (audiopad)) {
 739                 eDebug("audio already linked!");
 740                 g_object_unref (audiopad);
 741                 return;
 742         }
 743
 744         /* check media type */
 745         caps = gst_pad_get_caps (pad);
 746         str = gst_caps_get_structure (caps, 0);
 747         eDebug("gst new pad! %s", gst_structure_get_name (str));
 748
 749         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
 750                 gst_caps_unref (caps);
 751                 gst_object_unref (audiopad);
 752                 return;
 753         }
 754
 755         gst_caps_unref (caps);
 756         gst_pad_link (pad, audiopad);
 757 }
 758
 759 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
 760 {
 761         eServiceMP3 *_this = (eServiceMP3*)user_data;
 762         GstStructure *str;
 763
 764         /* check media type */
 765         caps = gst_pad_get_caps (pad);
 766         str = gst_caps_get_structure (caps, 0);
 767         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
 768         gst_caps_unref (caps);
 769 }
 770
 771 void eServiceMP3::gstPoll(const int&)
 772 {
 773                 /* ok, we have a serious problem here. gstBusSyncHandler sends
 774                    us the wakup signal, but likely before it was posted.
 775                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
 776
 777                    I need to understand the API a bit more to make this work
 778                    proplerly. */
 779         usleep(1);
 780
 781         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
 782         GstMessage *message;
 783         while ((message = gst_bus_pop (bus)))
 784         {
 785                 gstBusCall(bus, message);
 786                 gst_message_unref (message);
 787         }
 788 }
 789
 790 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
 791 #else
 792 #warning gstreamer not available, not building media player
 793 #endif