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
 144         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", filename, is_mpeg_ps, is_mpeg_ts, is_video, is_streaming, is_mp3, is_matroska, is_avi);
 145
 146         int is_audio = !is_video;
 147
 148         int all_ok = 0;
 149
 150         m_gst_pipeline = gst_pipeline_new ("audio-player");
 151         if (!m_gst_pipeline)
 152                 eWarning("failed to create pipeline");
 153
 154         if (!is_streaming)
 155                 source = gst_element_factory_make ("filesrc", "file-source");
 156         else
 157         {
 158                 source = gst_element_factory_make ("neonhttpsrc", "http-source");
 159                 if (source)
 160                         g_object_set (G_OBJECT (source), "automatic-redirect", TRUE, NULL);
 161         }
 162
 163         if (!source)
 164                 eWarning("failed to create %s", is_streaming ? "neonhttpsrc" : "filesrc");
 165         else
 166                                 /* configure source */
 167                 g_object_set (G_OBJECT (source), "location", filename, NULL);
 168
 169         if (is_audio)
 170         {
 171                         /* filesrc -> decodebin -> audioconvert -> capsfilter -> alsasink */
 172                 const char *decodertype = is_mp3 ? "mad" : "decodebin";
 173
 174                 decoder = gst_element_factory_make (decodertype, "decoder");
 175                 if (!decoder)
 176                         eWarning("failed to create %s decoder", decodertype);
 177
 178                         /* mp3 decoding needs id3demux to extract ID3 data. 'decodebin' would do that internally. */
 179                 if (is_mp3)
 180                 {
 181                         filter = gst_element_factory_make ("id3demux", "filter");
 182                         if (!filter)
 183                                 eWarning("failed to create id3demux");
 184                 }
 185
 186                 conv = gst_element_factory_make ("audioconvert", "converter");
 187                 if (!conv)
 188                         eWarning("failed to create audioconvert");
 189
 190                 flt = gst_element_factory_make ("capsfilter", "flt");
 191                 if (!flt)
 192                         eWarning("failed to create capsfilter");
 193
 194                         /* for some reasons, we need to set the sample format to depth/width=16, because auto negotiation doesn't work. */
 195                         /* endianness, however, is not required to be set anymore. */
 196                 if (flt)
 197                 {
 198                         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);
 199                         g_object_set (G_OBJECT (flt), "caps", caps, (char*)0);
 200                         gst_caps_unref(caps);
 201                 }
 202
 203                 sink = gst_element_factory_make ("alsasink", "alsa-output");
 204                 if (!sink)
 205                         eWarning("failed to create osssink");
 206
 207                 if (source && decoder && conv && sink)
 208                         all_ok = 1;
 209         } else /* is_video */
 210         {
 211                         /* filesrc -> mpegdemux -> | queue_audio -> dvbaudiosink
 212                                                    | queue_video -> dvbvideosink */
 213
 214                 audio = gst_element_factory_make("dvbaudiosink", "audio");
 215                 queue_audio = gst_element_factory_make("queue", "queue_audio");
 216
 217                 video = gst_element_factory_make("dvbvideosink", "video");
 218                 queue_video = gst_element_factory_make("queue", "queue_video");
 219
 220                 if (is_mpeg_ps)
 221                         mpegdemux = gst_element_factory_make("flupsdemux", "mpegdemux");
 222                 else if (is_mpeg_ts)
 223                         mpegdemux = gst_element_factory_make("flutsdemux", "mpegdemux");
 224                 else if (is_matroska)
 225                         mpegdemux = gst_element_factory_make("matroskademux", "mpegdemux");
 226                 else if (is_avi)
 227                         mpegdemux = gst_element_factory_make("avidemux", "mpegdemux");
 228
 229                 if (!mpegdemux)
 230                 {
 231                         eDebug("fluendo mpegdemux not available, falling back to mpegdemux\n");
 232                         mpegdemux = gst_element_factory_make("mpegdemux", "mpegdemux");
 233                 }
 234
 235                 eDebug("audio: %p, queue_audio %p, video %p, queue_video %p, mpegdemux %p", audio, queue_audio, video, queue_video, mpegdemux);
 236                 if (audio && queue_audio && video && queue_video && mpegdemux)
 237                 {
 238                         g_object_set (G_OBJECT (queue_audio), "max-size-bytes", 256*1024, NULL);
 239                         g_object_set (G_OBJECT (queue_audio), "max-size-buffers", 0, NULL);
 240                         g_object_set (G_OBJECT (queue_audio), "max-size-time", (guint64)0, NULL);
 241                         g_object_set (G_OBJECT (queue_video), "max-size-buffers", 0, NULL);
 242                         g_object_set (G_OBJECT (queue_video), "max-size-bytes", 2*1024*1024, NULL);
 243                         g_object_set (G_OBJECT (queue_video), "max-size-time", (guint64)0, NULL);
 244                         all_ok = 1;
 245                 }
 246         }
 247
 248         if (m_gst_pipeline && all_ok)
 249         {
 250                 gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
 251
 252                 if (is_audio)
 253                 {
 254                         if (!is_mp3)
 255                         {
 256                                         /* decodebin has dynamic pads. When they get created, we connect them to the audio bin */
 257                                 g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
 258                                 g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
 259                         }
 260
 261                                 /* gst_bin will take the 'floating references' */
 262                         gst_bin_add_many (GST_BIN (m_gst_pipeline),
 263                                                 source, decoder, NULL);
 264
 265                         if (filter)
 266                         {
 267                                         /* id3demux also has dynamic pads, which need to be connected to the decoder (this is done in the 'gstCBfilterPadAdded' CB) */
 268                                 gst_bin_add(GST_BIN(m_gst_pipeline), filter);
 269                                 gst_element_link(source, filter);
 270                                 m_decoder = decoder;
 271                                 g_signal_connect (filter, "pad-added", G_CALLBACK(gstCBfilterPadAdded), this);
 272                         } else
 273                                         /* in decodebin's case we can just connect the source with the decodebin, and decodebin will take care about id3demux (or whatever is required) */
 274                                 gst_element_link(source, decoder);
 275
 276                                 /* create audio bin with the audioconverter, the capsfilter and the audiosink */
 277                         m_gst_audio = gst_bin_new ("audiobin");
 278
 279                         GstPad *audiopad = gst_element_get_static_pad (conv, "sink");
 280                         gst_bin_add_many(GST_BIN(m_gst_audio), conv, flt, sink, (char*)0);
 281                         gst_element_link_many(conv, flt, sink, (char*)0);
 282                         gst_element_add_pad(m_gst_audio, gst_ghost_pad_new ("sink", audiopad));
 283                         gst_object_unref(audiopad);
 284                         gst_bin_add (GST_BIN(m_gst_pipeline), m_gst_audio);
 285
 286                                 /* in mad's case, we can directly connect the decoder to the audiobin. otherwise, we do this in gstCBnewPad */
 287                         if (is_mp3)
 288                                 gst_element_link(decoder, m_gst_audio);
 289                 } else
 290                 {
 291                         gst_bin_add_many(GST_BIN(m_gst_pipeline), source, mpegdemux, audio, queue_audio, video, queue_video, NULL);
 292                         gst_element_link(source, mpegdemux);
 293                         gst_element_link(queue_audio, audio);
 294                         gst_element_link(queue_video, video);
 295
 296                         m_gst_audioqueue = queue_audio;
 297                         m_gst_videoqueue = queue_video;
 298
 299                         g_signal_connect(mpegdemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 300                 }
 301         } else
 302         {
 303                 if (m_gst_pipeline)
 304                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 305                 if (source)
 306                         gst_object_unref(GST_OBJECT(source));
 307                 if (decoder)
 308                         gst_object_unref(GST_OBJECT(decoder));
 309                 if (conv)
 310                         gst_object_unref(GST_OBJECT(conv));
 311                 if (sink)
 312                         gst_object_unref(GST_OBJECT(sink));
 313
 314                 if (audio)
 315                         gst_object_unref(GST_OBJECT(audio));
 316                 if (queue_audio)
 317                         gst_object_unref(GST_OBJECT(queue_audio));
 318                 if (video)
 319                         gst_object_unref(GST_OBJECT(video));
 320                 if (queue_video)
 321                         gst_object_unref(GST_OBJECT(queue_video));
 322                 if (mpegdemux)
 323                         gst_object_unref(GST_OBJECT(mpegdemux));
 324
 325                 eDebug("sorry, can't play.");
 326                 m_gst_pipeline = 0;
 327         }
 328
 329         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 330 }
 331
 332 eServiceMP3::~eServiceMP3()
 333 {
 334         if (m_state == stRunning)
 335                 stop();
 336
 337         if (m_stream_tags)
 338                 gst_tag_list_free(m_stream_tags);
 339
 340         if (m_gst_pipeline)
 341         {
 342                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 343                 eDebug("SERVICEMP3 destruct!");
 344         }
 345 }
 346
 347 DEFINE_REF(eServiceMP3);
 348
 349 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 350 {
 351         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 352         return 0;
 353 }
 354
 355 RESULT eServiceMP3::start()
 356 {
 357         assert(m_state == stIdle);
 358
 359         m_state = stRunning;
 360         if (m_gst_pipeline)
 361         {
 362                 eDebug("starting pipeline");
 363                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 364         }
 365         m_event(this, evStart);
 366         return 0;
 367 }
 368
 369 RESULT eServiceMP3::stop()
 370 {
 371         assert(m_state != stIdle);
 372         if (m_state == stStopped)
 373                 return -1;
 374         printf("MP3: %s stop\n", m_filename.c_str());
 375         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 376         m_state = stStopped;
 377         return 0;
 378 }
 379
 380 RESULT eServiceMP3::setTarget(int target)
 381 {
 382         return -1;
 383 }
 384
 385 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 386 {
 387         ptr=this;
 388         return 0;
 389 }
 390
 391 RESULT eServiceMP3::setSlowMotion(int ratio)
 392 {
 393         return -1;
 394 }
 395
 396 RESULT eServiceMP3::setFastForward(int ratio)
 397 {
 398         return -1;
 399 }
 400
 401                 // iPausableService
 402 RESULT eServiceMP3::pause()
 403 {
 404         if (!m_gst_pipeline)
 405                 return -1;
 406         gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 407         return 0;
 408 }
 409
 410 RESULT eServiceMP3::unpause()
 411 {
 412         if (!m_gst_pipeline)
 413                 return -1;
 414         gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 415         return 0;
 416 }
 417
 418         /* iSeekableService */
 419 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 420 {
 421         ptr = this;
 422         return 0;
 423 }
 424
 425 RESULT eServiceMP3::getLength(pts_t &pts)
 426 {
 427         if (!m_gst_pipeline)
 428                 return -1;
 429         if (m_state != stRunning)
 430                 return -1;
 431
 432         GstFormat fmt = GST_FORMAT_TIME;
 433         gint64 len;
 434
 435         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 436                 return -1;
 437
 438                 /* len is in nanoseconds. we have 90 000 pts per second. */
 439
 440         pts = len / 11111;
 441         return 0;
 442 }
 443
 444 RESULT eServiceMP3::seekTo(pts_t to)
 445 {
 446         if (!m_gst_pipeline)
 447                 return -1;
 448
 449                 /* convert pts to nanoseconds */
 450         gint64 time_nanoseconds = to * 11111LL;
 451         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 452                 GST_SEEK_TYPE_SET, time_nanoseconds,
 453                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 454         {
 455                 eDebug("SEEK failed");
 456                 return -1;
 457         }
 458         return 0;
 459 }
 460
 461 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 462 {
 463         if (!m_gst_pipeline)
 464                 return -1;
 465
 466         pause();
 467
 468         pts_t ppos;
 469         getPlayPosition(ppos);
 470         ppos += to * direction;
 471         if (ppos < 0)
 472                 ppos = 0;
 473         seekTo(ppos);
 474
 475         unpause();
 476
 477         return 0;
 478 }
 479
 480 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 481 {
 482         if (!m_gst_pipeline)
 483                 return -1;
 484         if (m_state != stRunning)
 485                 return -1;
 486
 487         GstFormat fmt = GST_FORMAT_TIME;
 488         gint64 len;
 489
 490         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 491                 return -1;
 492
 493                 /* len is in nanoseconds. we have 90 000 pts per second. */
 494         pts = len / 11111;
 495         return 0;
 496 }
 497
 498 RESULT eServiceMP3::setTrickmode(int trick)
 499 {
 500                 /* trickmode currently doesn't make any sense for us. */
 501         return -1;
 502 }
 503
 504 RESULT eServiceMP3::isCurrentlySeekable()
 505 {
 506         return 1;
 507 }
 508
 509 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 510 {
 511         i = this;
 512         return 0;
 513 }
 514
 515 RESULT eServiceMP3::getName(std::string &name)
 516 {
 517         name = m_filename;
 518         size_t n = name.rfind('/');
 519         if (n != std::string::npos)
 520                 name = name.substr(n + 1);
 521         return 0;
 522 }
 523
 524 int eServiceMP3::getInfo(int w)
 525 {
 526         switch (w)
 527         {
 528         case sTitle:
 529         case sArtist:
 530         case sAlbum:
 531         case sComment:
 532         case sTracknumber:
 533         case sGenre:
 534                 return resIsString;
 535
 536         default:
 537                 return resNA;
 538         }
 539 }
 540
 541 std::string eServiceMP3::getInfoString(int w)
 542 {
 543         gchar *tag = 0;
 544         switch (w)
 545         {
 546         case sTitle:
 547                 tag = GST_TAG_TITLE;
 548                 break;
 549         case sArtist:
 550                 tag = GST_TAG_ARTIST;
 551                 break;
 552         case sAlbum:
 553                 tag = GST_TAG_ALBUM;
 554                 break;
 555         case sComment:
 556                 tag = GST_TAG_COMMENT;
 557                 break;
 558         case sTracknumber:
 559                 tag = GST_TAG_TRACK_NUMBER;
 560                 break;
 561         case sGenre:
 562                 tag = GST_TAG_GENRE;
 563                 break;
 564         default:
 565                 return "";
 566         }
 567
 568         if (!m_stream_tags || !tag)
 569                 return "";
 570
 571         gchar *value;
 572
 573         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 574         {
 575                 std::string res = value;
 576                 g_free(value);
 577                 return res;
 578         }
 579
 580         return "";
 581 }
 582
 583
 584                 void foreach(const GstTagList *list, const gchar *tag, gpointer user_data)
 585                 {
 586                         if (tag)
 587                                 eDebug("Tag: %c%c%c%c", tag[0], tag[1], tag[2], tag[3]);
 588
 589                 }
 590
 591 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 592 {
 593         if (msg)
 594         {
 595                 gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 596                 eDebug("gst_message: %s", string);
 597                 g_free(string);
 598         }
 599
 600         switch (GST_MESSAGE_TYPE (msg))
 601         {
 602         case GST_MESSAGE_EOS:
 603                 m_event((iPlayableService*)this, evEOF);
 604                 break;
 605         case GST_MESSAGE_ERROR:
 606         {
 607                 gchar *debug;
 608                 GError *err;
 609                 gst_message_parse_error (msg, &err, &debug);
 610                 g_free (debug);
 611                 eWarning("Gstreamer error: %s", err->message);
 612                 g_error_free(err);
 613                         /* TODO: signal error condition to user */
 614                 break;
 615         }
 616         case GST_MESSAGE_TAG:
 617         {
 618                 GstTagList *tags, *result;
 619                 gst_message_parse_tag(msg, &tags);
 620
 621                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 622                 if (result)
 623                 {
 624                         if (m_stream_tags)
 625                                 gst_tag_list_free(m_stream_tags);
 626                         m_stream_tags = result;
 627                 }
 628                 gst_tag_list_free(tags);
 629
 630                 m_event((iPlayableService*)this, evUpdatedInfo);
 631                 break;
 632         }
 633         default:
 634                 break;
 635         }
 636 }
 637
 638 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
 639 {
 640         eServiceMP3 *_this = (eServiceMP3*)user_data;
 641         _this->m_pump.send(1);
 642                 /* wake */
 643         return GST_BUS_PASS;
 644 }
 645
 646 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
 647 {
 648         eServiceMP3 *_this = (eServiceMP3*)user_data;
 649         gchar *name;
 650         name = gst_pad_get_name (pad);
 651         g_print ("A new pad %s was created\n", name);
 652         GstPad *sinkpad;
 653
 654         if (g_strrstr(name,"audio")) // mpegdemux uses video_nn with n=0,1,.., flupsdemux uses stream id
 655                 gst_pad_link(pad, gst_element_get_static_pad (_this->m_gst_audioqueue, "sink"));
 656         if (g_strrstr(name,"video"))
 657                 gst_pad_link(pad, gst_element_get_static_pad (_this->m_gst_videoqueue, "sink"));
 658         g_free (name);
 659 }
 660
 661 void eServiceMP3::gstCBfilterPadAdded(GstElement *filter, GstPad *pad, gpointer user_data)
 662 {
 663         eServiceMP3 *_this = (eServiceMP3*)user_data;
 664         gst_pad_link(pad, gst_element_get_static_pad (_this->m_decoder, "sink"));
 665 }
 666
 667 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
 668 {
 669         eServiceMP3 *_this = (eServiceMP3*)user_data;
 670         GstCaps *caps;
 671         GstStructure *str;
 672         GstPad *audiopad;
 673
 674         /* only link once */
 675         audiopad = gst_element_get_request_pad (_this->m_gst_audio, "sink");
 676         if (GST_PAD_IS_LINKED (audiopad)) {
 677                 eDebug("audio already linked!");
 678                 g_object_unref (audiopad);
 679                 return;
 680         }
 681
 682         /* check media type */
 683         caps = gst_pad_get_caps (pad);
 684         str = gst_caps_get_structure (caps, 0);
 685         eDebug("gst new pad! %s", gst_structure_get_name (str));
 686
 687         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
 688                 gst_caps_unref (caps);
 689                 gst_object_unref (audiopad);
 690                 return;
 691         }
 692
 693         gst_caps_unref (caps);
 694         gst_pad_link (pad, audiopad);
 695 }
 696
 697 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
 698 {
 699         eServiceMP3 *_this = (eServiceMP3*)user_data;
 700         GstStructure *str;
 701
 702         /* check media type */
 703         caps = gst_pad_get_caps (pad);
 704         str = gst_caps_get_structure (caps, 0);
 705         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
 706         gst_caps_unref (caps);
 707 }
 708
 709 void eServiceMP3::gstPoll(const int&)
 710 {
 711                 /* ok, we have a serious problem here. gstBusSyncHandler sends
 712                    us the wakup signal, but likely before it was posted.
 713                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
 714
 715                    I need to understand the API a bit more to make this work
 716                    proplerly. */
 717         usleep(1);
 718
 719         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
 720         GstMessage *message;
 721         while ((message = gst_bus_pop (bus)))
 722         {
 723                 gstBusCall(bus, message);
 724                 gst_message_unref (message);
 725         }
 726 }
 727
 728 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
 729 #else
 730 #warning gstreamer not available, not building media player
 731 #endif