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         m_audioStreams.clear();
 120         m_currentAudioStream = 0;
 121         CONNECT(m_pump.recv_msg, eServiceMP3::gstPoll);
 122         GstElement *source = 0;
 123
 124         GstElement *filter = 0, *decoder = 0, *conv = 0, *flt = 0, *sink = 0; /* for audio */
 125
 126         GstElement *audio = 0, *switch_audio = 0, *queue_audio = 0, *video = 0, *queue_video = 0, *videodemux = 0;
 127
 128         m_state = stIdle;
 129         eDebug("SERVICEMP3 construct!");
 130
 131                 /* FIXME: currently, decodebin isn't possible for
 132                    video streams. in that case, make a manual pipeline. */
 133
 134         const char *ext = strrchr(filename, '.');
 135         if (!ext)
 136                 ext = filename;
 137
 138         int is_mpeg_ps = !(strcasecmp(ext, ".mpeg") && strcasecmp(ext, ".mpg") && strcasecmp(ext, ".vob") && strcasecmp(ext, ".bin"));
 139         int is_mpeg_ts = !strcasecmp(ext, ".ts");
 140         int is_matroska = !strcasecmp(ext, ".mkv");
 141         int is_avi = !strcasecmp(ext, ".avi");
 142         int is_mp3 = !strcasecmp(ext, ".mp3"); /* force mp3 instead of decodebin */
 143         int is_video = is_mpeg_ps || is_mpeg_ts || is_matroska || is_avi;
 144         int is_streaming = !strncmp(filename, "http://", 7);
 145         int is_AudioCD = !(strncmp(filename, "/autofs/", 8) || strncmp(filename+strlen(filename)-13, "/track-", 7) || strcasecmp(ext, ".wav"));
 146
 147         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);
 148
 149         int is_audio = !is_video;
 150
 151         int all_ok = 0;
 152
 153         m_gst_pipeline = gst_pipeline_new ("mediaplayer");
 154         if (!m_gst_pipeline)
 155                 eWarning("failed to create pipeline");
 156
 157         if (is_AudioCD)
 158         {
 159                 source = gst_element_factory_make ("cdiocddasrc", "cda-source");
 160                 if (source)
 161                         g_object_set (G_OBJECT (source), "device", "/dev/cdroms/cdrom0", NULL);
 162                 else
 163                         is_AudioCD = 0;
 164         }
 165         if ( !is_streaming && !is_AudioCD )
 166                 source = gst_element_factory_make ("filesrc", "file-source");
 167         else if ( is_streaming )
 168         {
 169                 source = gst_element_factory_make ("neonhttpsrc", "http-source");
 170                 if (source)
 171                         g_object_set (G_OBJECT (source), "automatic-redirect", TRUE, NULL);
 172         }
 173
 174         if (!source)
 175                 eWarning("failed to create %s", is_streaming ? "neonhttpsrc" : "filesrc");
 176                                 /* configure source */
 177         else if (!is_AudioCD)
 178                 g_object_set (G_OBJECT (source), "location", filename, NULL);
 179         else
 180         {
 181                 int track = atoi(filename+18);
 182                 eDebug("play audio CD track #%i",track);
 183                 if (track > 0)
 184                         g_object_set (G_OBJECT (source), "track", track, NULL);
 185         }
 186
 187         if (is_audio)
 188         {
 189                         /* filesrc -> decodebin -> audioconvert -> capsfilter -> alsasink */
 190                 const char *decodertype = is_mp3 ? "mad" : "decodebin";
 191
 192                 decoder = gst_element_factory_make (decodertype, "decoder");
 193                 if (!decoder)
 194                         eWarning("failed to create %s decoder", decodertype);
 195
 196                         /* mp3 decoding needs id3demux to extract ID3 data. 'decodebin' would do that internally. */
 197                 if (is_mp3)
 198                 {
 199                         filter = gst_element_factory_make ("id3demux", "filter");
 200                         if (!filter)
 201                                 eWarning("failed to create id3demux");
 202                 }
 203
 204                 conv = gst_element_factory_make ("audioconvert", "converter");
 205                 if (!conv)
 206                         eWarning("failed to create audioconvert");
 207
 208                 flt = gst_element_factory_make ("capsfilter", "flt");
 209                 if (!flt)
 210                         eWarning("failed to create capsfilter");
 211
 212                         /* for some reasons, we need to set the sample format to depth/width=16, because auto negotiation doesn't work. */
 213                         /* endianness, however, is not required to be set anymore. */
 214                 if (flt)
 215                 {
 216                         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);
 217                         g_object_set (G_OBJECT (flt), "caps", caps, (char*)0);
 218                         gst_caps_unref(caps);
 219                 }
 220
 221                 sink = gst_element_factory_make ("alsasink", "alsa-output");
 222                 if (!sink)
 223                         eWarning("failed to create osssink");
 224
 225                 if (source && decoder && conv && sink)
 226                         all_ok = 1;
 227         } else /* is_video */
 228         {
 229                         /* filesrc -> mpegdemux -> | queue_audio -> dvbaudiosink
 230                                                    | queue_video -> dvbvideosink */
 231
 232                 audio = gst_element_factory_make("dvbaudiosink", "audiosink");
 233                 queue_audio = gst_element_factory_make("queue", "queue_audio");
 234
 235                 video = gst_element_factory_make("dvbvideosink", "videosink");
 236                 queue_video = gst_element_factory_make("queue", "queue_video");
 237
 238                 if (is_mpeg_ps)
 239                         videodemux = gst_element_factory_make("flupsdemux", "videodemux");
 240                 else if (is_mpeg_ts)
 241                         videodemux = gst_element_factory_make("flutsdemux", "videodemux");
 242                 else if (is_matroska)
 243                         videodemux = gst_element_factory_make("matroskademux", "videodemux");
 244                 else if (is_avi)
 245                         videodemux = gst_element_factory_make("avidemux", "videodemux");
 246
 247                 if (!videodemux)
 248                 {
 249                         eDebug("fluendo mpegdemux not available, falling back to mpegdemux\n");
 250                         videodemux = gst_element_factory_make("mpegdemux", "videodemux");
 251                 }
 252
 253                 eDebug("audio: %p, queue_audio %p, video %p, queue_video %p, videodemux %p", audio, queue_audio, video, queue_video, videodemux);
 254                 if (audio && queue_audio && video && queue_video && videodemux)
 255                 {
 256                         g_object_set (G_OBJECT (queue_audio), "max-size-bytes", 256*1024, NULL);
 257                         g_object_set (G_OBJECT (queue_audio), "max-size-buffers", 0, NULL);
 258                         g_object_set (G_OBJECT (queue_audio), "max-size-time", (guint64)0, NULL);
 259                         g_object_set (G_OBJECT (queue_video), "max-size-buffers", 0, NULL);
 260                         g_object_set (G_OBJECT (queue_video), "max-size-bytes", 2*1024*1024, NULL);
 261                         g_object_set (G_OBJECT (queue_video), "max-size-time", (guint64)0, NULL);
 262                         all_ok = 1;
 263                 }
 264         }
 265
 266         if (m_gst_pipeline && all_ok)
 267         {
 268                 gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
 269
 270                 if (is_AudioCD)
 271                 {
 272                         queue_audio = gst_element_factory_make("queue", "queue_audio");
 273                         g_object_set (G_OBJECT (sink), "preroll-queue-len", 80, NULL);
 274                         gst_bin_add_many (GST_BIN (m_gst_pipeline), source, queue_audio, conv, sink, NULL);
 275                         gst_element_link_many(source, queue_audio, conv, sink, NULL);
 276                 }
 277                 else if (is_audio)
 278                 {
 279                         queue_audio = gst_element_factory_make("queue", "queue_audio");
 280
 281                         if (!is_mp3)
 282                         {
 283                                         /* decodebin has dynamic pads. When they get created, we connect them to the audio bin */
 284                                 g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
 285                                 g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
 286                                 g_object_set (G_OBJECT (sink), "preroll-queue-len", 80, NULL);
 287                         }
 288
 289                                 /* gst_bin will take the 'floating references' */
 290                         gst_bin_add_many (GST_BIN (m_gst_pipeline),
 291                                                 source, queue_audio, decoder, NULL);
 292
 293                         if (filter)
 294                         {
 295                                         /* id3demux also has dynamic pads, which need to be connected to the decoder (this is done in the 'gstCBfilterPadAdded' CB) */
 296                                 gst_bin_add(GST_BIN(m_gst_pipeline), filter);
 297                                 gst_element_link(source, filter);
 298                                 g_signal_connect (filter, "pad-added", G_CALLBACK(gstCBfilterPadAdded), this);
 299                         } else
 300                                         /* in decodebin's case we can just connect the source with the decodebin, and decodebin will take care about id3demux (or whatever is required) */
 301                                 gst_element_link_many(source, queue_audio, decoder, NULL);
 302
 303                                 /* create audio bin with the audioconverter, the capsfilter and the audiosink */
 304                         audio = gst_bin_new ("audiobin");
 305
 306                         GstPad *audiopad = gst_element_get_static_pad (conv, "sink");
 307                         gst_bin_add_many(GST_BIN(audio), conv, flt, sink, (char*)0);
 308                         gst_element_link_many(conv, flt, sink, (char*)0);
 309                         gst_element_add_pad(audio, gst_ghost_pad_new ("sink", audiopad));
 310                         gst_object_unref(audiopad);
 311                         gst_bin_add (GST_BIN(m_gst_pipeline), audio);
 312
 313                                 /* in mad's case, we can directly connect the decoder to the audiobin. otherwise, we do this in gstCBnewPad */
 314                         if (is_mp3)
 315                                 gst_element_link(decoder, audio);
 316                 } else /* is_video */
 317                 {
 318                         gst_bin_add_many(GST_BIN(m_gst_pipeline), source, videodemux, audio, queue_audio, video, queue_video, NULL);
 319                         switch_audio = gst_element_factory_make ("input-selector", "switch_audio");
 320                         if (switch_audio)
 321                         {
 322                                 g_object_set (G_OBJECT (switch_audio), "select-all", TRUE, NULL);
 323                                 gst_bin_add(GST_BIN(m_gst_pipeline), switch_audio);
 324                                 gst_element_link(switch_audio, queue_audio);
 325                         }
 326                         gst_element_link(source, videodemux);
 327                         gst_element_link(queue_audio, audio);
 328                         gst_element_link(queue_video, video);
 329                         g_signal_connect(videodemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 330                 }
 331         } else
 332         {
 333                 if (m_gst_pipeline)
 334                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 335                 if (source)
 336                         gst_object_unref(GST_OBJECT(source));
 337                 if (decoder)
 338                         gst_object_unref(GST_OBJECT(decoder));
 339                 if (conv)
 340                         gst_object_unref(GST_OBJECT(conv));
 341                 if (sink)
 342                         gst_object_unref(GST_OBJECT(sink));
 343
 344                 if (audio)
 345                         gst_object_unref(GST_OBJECT(audio));
 346                 if (queue_audio)
 347                         gst_object_unref(GST_OBJECT(queue_audio));
 348                 if (video)
 349                         gst_object_unref(GST_OBJECT(video));
 350                 if (queue_video)
 351                         gst_object_unref(GST_OBJECT(queue_video));
 352                 if (videodemux)
 353                         gst_object_unref(GST_OBJECT(videodemux));
 354
 355                 eDebug("sorry, can't play.");
 356                 m_gst_pipeline = 0;
 357         }
 358
 359         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 360 }
 361
 362 eServiceMP3::~eServiceMP3()
 363 {
 364         if (m_state == stRunning)
 365                 stop();
 366
 367         if (m_stream_tags)
 368                 gst_tag_list_free(m_stream_tags);
 369
 370         if (m_gst_pipeline)
 371         {
 372                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 373                 eDebug("SERVICEMP3 destruct!");
 374         }
 375 }
 376
 377 DEFINE_REF(eServiceMP3);
 378
 379 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 380 {
 381         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 382         return 0;
 383 }
 384
 385 RESULT eServiceMP3::start()
 386 {
 387         assert(m_state == stIdle);
 388
 389         m_state = stRunning;
 390         if (m_gst_pipeline)
 391         {
 392                 eDebug("starting pipeline");
 393                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 394         }
 395         m_event(this, evStart);
 396         return 0;
 397 }
 398
 399 RESULT eServiceMP3::stop()
 400 {
 401         assert(m_state != stIdle);
 402         if (m_state == stStopped)
 403                 return -1;
 404         eDebug("MP3: %s stop\n", m_filename.c_str());
 405         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 406         m_state = stStopped;
 407         return 0;
 408 }
 409
 410 RESULT eServiceMP3::setTarget(int target)
 411 {
 412         return -1;
 413 }
 414
 415 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 416 {
 417         ptr=this;
 418         return 0;
 419 }
 420
 421 RESULT eServiceMP3::setSlowMotion(int ratio)
 422 {
 423         return -1;
 424 }
 425
 426 RESULT eServiceMP3::setFastForward(int ratio)
 427 {
 428         return -1;
 429 }
 430
 431                 // iPausableService
 432 RESULT eServiceMP3::pause()
 433 {
 434         if (!m_gst_pipeline)
 435                 return -1;
 436         gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 437         return 0;
 438 }
 439
 440 RESULT eServiceMP3::unpause()
 441 {
 442         if (!m_gst_pipeline)
 443                 return -1;
 444         gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 445         return 0;
 446 }
 447
 448         /* iSeekableService */
 449 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 450 {
 451         ptr = this;
 452         return 0;
 453 }
 454
 455 RESULT eServiceMP3::getLength(pts_t &pts)
 456 {
 457         if (!m_gst_pipeline)
 458                 return -1;
 459         if (m_state != stRunning)
 460                 return -1;
 461
 462         GstFormat fmt = GST_FORMAT_TIME;
 463         gint64 len;
 464
 465         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 466                 return -1;
 467
 468                 /* len is in nanoseconds. we have 90 000 pts per second. */
 469
 470         pts = len / 11111;
 471         return 0;
 472 }
 473
 474 RESULT eServiceMP3::seekTo(pts_t to)
 475 {
 476         if (!m_gst_pipeline)
 477                 return -1;
 478
 479                 /* convert pts to nanoseconds */
 480         gint64 time_nanoseconds = to * 11111LL;
 481         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 482                 GST_SEEK_TYPE_SET, time_nanoseconds,
 483                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 484         {
 485                 eDebug("SEEK failed");
 486                 return -1;
 487         }
 488         return 0;
 489 }
 490
 491 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 492 {
 493         if (!m_gst_pipeline)
 494                 return -1;
 495
 496         pause();
 497
 498         pts_t ppos;
 499         getPlayPosition(ppos);
 500         ppos += to * direction;
 501         if (ppos < 0)
 502                 ppos = 0;
 503         seekTo(ppos);
 504
 505         unpause();
 506
 507         return 0;
 508 }
 509
 510 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 511 {
 512         if (!m_gst_pipeline)
 513                 return -1;
 514         if (m_state != stRunning)
 515                 return -1;
 516
 517         GstFormat fmt = GST_FORMAT_TIME;
 518         gint64 len;
 519
 520         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 521                 return -1;
 522
 523                 /* len is in nanoseconds. we have 90 000 pts per second. */
 524         pts = len / 11111;
 525         return 0;
 526 }
 527
 528 RESULT eServiceMP3::setTrickmode(int trick)
 529 {
 530                 /* trickmode currently doesn't make any sense for us. */
 531         return -1;
 532 }
 533
 534 RESULT eServiceMP3::isCurrentlySeekable()
 535 {
 536         return 1;
 537 }
 538
 539 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 540 {
 541         i = this;
 542         return 0;
 543 }
 544
 545 RESULT eServiceMP3::getName(std::string &name)
 546 {
 547         name = m_filename;
 548         size_t n = name.rfind('/');
 549         if (n != std::string::npos)
 550                 name = name.substr(n + 1);
 551         return 0;
 552 }
 553
 554 int eServiceMP3::getInfo(int w)
 555 {
 556         gchar *tag = 0;
 557
 558         switch (w)
 559         {
 560         case sTitle:
 561         case sArtist:
 562         case sAlbum:
 563         case sComment:
 564         case sTracknumber:
 565         case sGenre:
 566         case sVideoType:
 567                 return resIsString;
 568         case sCurrentTitle:
 569                 tag = GST_TAG_TRACK_NUMBER;
 570                 break;
 571         case sTotalTitles:
 572                 tag = GST_TAG_TRACK_COUNT;
 573                 break;
 574         default:
 575                 return resNA;
 576         }
 577
 578         if (!m_stream_tags || !tag)
 579                 return 0;
 580
 581         guint value;
 582         if (gst_tag_list_get_uint(m_stream_tags, tag, &value))
 583                 return (int) value;
 584
 585         return 0;
 586
 587 }
 588
 589 std::string eServiceMP3::getInfoString(int w)
 590 {
 591         gchar *tag = 0;
 592         switch (w)
 593         {
 594         case sTitle:
 595                 tag = GST_TAG_TITLE;
 596                 break;
 597         case sArtist:
 598                 tag = GST_TAG_ARTIST;
 599                 break;
 600         case sAlbum:
 601                 tag = GST_TAG_ALBUM;
 602                 break;
 603         case sComment:
 604                 tag = GST_TAG_COMMENT;
 605                 break;
 606         case sTracknumber:
 607                 tag = GST_TAG_TRACK_NUMBER;
 608                 break;
 609         case sGenre:
 610                 tag = GST_TAG_GENRE;
 611                 break;
 612         case sVideoType:
 613                 tag = GST_TAG_VIDEO_CODEC;
 614                 break;
 615         default:
 616                 return "";
 617         }
 618
 619         if (!m_stream_tags || !tag)
 620                 return "";
 621
 622         gchar *value;
 623
 624         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 625         {
 626                 std::string res = value;
 627                 g_free(value);
 628                 return res;
 629         }
 630
 631         return "";
 632 }
 633
 634 RESULT eServiceMP3::audioChannel(ePtr<iAudioChannelSelection> &ptr)
 635 {
 636         ptr = this;
 637         return 0;
 638 }
 639
 640 RESULT eServiceMP3::audioTracks(ePtr<iAudioTrackSelection> &ptr)
 641 {
 642         ptr = this;
 643         return 0;
 644 }
 645
 646 int eServiceMP3::getNumberOfTracks()
 647 {
 648         return m_audioStreams.size();
 649 }
 650
 651 int eServiceMP3::getCurrentTrack()
 652 {
 653         return m_currentAudioStream;
 654 }
 655
 656 RESULT eServiceMP3::selectTrack(unsigned int i)
 657 {
 658         gint nb_sources;
 659         GstPad *active_pad;
 660         GstElement *selector = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_audio");
 661         if ( !selector)
 662         {
 663                 eDebug("can't switch audio tracks! gst-plugin-selector needed");
 664                 return -1;
 665         }
 666         g_object_get (G_OBJECT (selector), "n-pads", &nb_sources, NULL);
 667         g_object_get (G_OBJECT (selector), "active-pad", &active_pad, NULL);
 668         if ( i >= m_audioStreams.size() || i >= nb_sources || m_currentAudioStream >= m_audioStreams.size() )
 669                 return -2;
 670         char sinkpad[8];
 671         sprintf(sinkpad, "sink%d", i);
 672         g_object_set (G_OBJECT (selector), "active-pad", gst_element_get_pad (selector, sinkpad), NULL);
 673         g_object_get (G_OBJECT (selector), "active-pad", &active_pad, NULL);
 674         gchar *name;
 675         name = gst_pad_get_name (active_pad);
 676         eDebug ("switched audio to (%s)", name);
 677         g_free(name);
 678         m_currentAudioStream = i;
 679         return 0;
 680 }
 681
 682 int eServiceMP3::getCurrentChannel()
 683 {
 684         return STEREO;
 685 }
 686
 687 RESULT eServiceMP3::selectChannel(int i)
 688 {
 689         eDebug("eServiceMP3::selectChannel(%i)",i);
 690         return 0;
 691 }
 692
 693 RESULT eServiceMP3::getTrackInfo(struct iAudioTrackInfo &info, unsigned int i)
 694 {
 695 //      eDebug("eServiceMP3::getTrackInfo(&info, %i)",i);
 696         if (i >= m_audioStreams.size())
 697                 return -2;
 698         if (m_audioStreams[i].type == audioStream::atMP2)
 699                 info.m_description = "MP2";
 700         else if (m_audioStreams[i].type == audioStream::atMP3)
 701                 info.m_description = "MP3";
 702         else if (m_audioStreams[i].type == audioStream::atAC3)
 703                 info.m_description = "AC3";
 704         else if (m_audioStreams[i].type == audioStream::atAAC)
 705                 info.m_description = "AAC";
 706         else  if (m_audioStreams[i].type == audioStream::atDTS)
 707                 info.m_description = "DTS";
 708         else
 709                 info.m_description = "???";
 710         if (info.m_language.empty())
 711                 info.m_language = m_audioStreams[i].language_code;
 712         return 0;
 713 }
 714
 715 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 716 {
 717         if (!msg)
 718                 return;
 719         gchar *sourceName;
 720         GstObject *source;
 721
 722         source = GST_MESSAGE_SRC(msg);
 723         sourceName = gst_object_get_name(source);
 724
 725         if (gst_message_get_structure(msg))
 726         {
 727                 gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 728                 eDebug("gst_message from %s: %s", sourceName, string);
 729                 g_free(string);
 730         }
 731         else
 732                 eDebug("gst_message from %s: %s (without structure)", sourceName, GST_MESSAGE_TYPE_NAME(msg));
 733
 734         switch (GST_MESSAGE_TYPE (msg))
 735         {
 736         case GST_MESSAGE_EOS:
 737                 m_event((iPlayableService*)this, evEOF);
 738                 break;
 739         case GST_MESSAGE_ERROR:
 740         {
 741                 gchar *debug;
 742                 GError *err;
 743
 744                 gst_message_parse_error (msg, &err, &debug);
 745                 g_free (debug);
 746                 eWarning("Gstreamer error: %s (%i)", err->message, err->code );
 747                 if ( err->domain == GST_STREAM_ERROR && err->code == GST_STREAM_ERROR_DECODE )
 748                 {
 749                         if ( g_strrstr(sourceName, "videosink") )
 750                                 m_event((iPlayableService*)this, evUser+11);
 751                 }
 752                 g_error_free(err);
 753                         /* TODO: signal error condition to user */
 754                 break;
 755         }
 756         case GST_MESSAGE_TAG:
 757         {
 758                 GstTagList *tags, *result;
 759                 gst_message_parse_tag(msg, &tags);
 760
 761                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 762                 if (result)
 763                 {
 764                         if (m_stream_tags)
 765                                 gst_tag_list_free(m_stream_tags);
 766                         m_stream_tags = result;
 767                 }
 768                 gchar *g_audiocodec;
 769                 if (gst_tag_list_get_string(tags, GST_TAG_AUDIO_CODEC, &g_audiocodec))
 770                 {
 771                         std::vector<audioStream>::iterator IterAudioStream = m_audioStreams.begin();
 772                         while ( IterAudioStream->language_code.length() && IterAudioStream != m_audioStreams.end())
 773                                 IterAudioStream++;
 774                         if ( g_strrstr(g_audiocodec, "MPEG-1 layer 2") )
 775                                 IterAudioStream->type = audioStream::atMP2;
 776                         else if ( g_strrstr(g_audiocodec, "AC-3 audio") )
 777                                 IterAudioStream->type = audioStream::atAC3;
 778                         gchar *g_language;
 779                         if ( gst_tag_list_get_string(tags, GST_TAG_LANGUAGE_CODE, &g_language) )
 780                                 IterAudioStream->language_code = std::string(g_language);
 781                         g_free (g_language);
 782                         g_free (g_audiocodec);
 783                 }
 784                 break;
 785         }
 786         default:
 787                 break;
 788         }
 789         g_free (sourceName);
 790 }
 791
 792 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
 793 {
 794         eServiceMP3 *_this = (eServiceMP3*)user_data;
 795         _this->m_pump.send(1);
 796                 /* wake */
 797         return GST_BUS_PASS;
 798 }
 799
 800 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
 801 {
 802         eServiceMP3 *_this = (eServiceMP3*)user_data;
 803         GstBin *pipeline = GST_BIN(_this->m_gst_pipeline);
 804         gchar *name;
 805         name = gst_pad_get_name (pad);
 806         eDebug ("A new pad %s was created", name);
 807         if (g_strrstr(name,"audio")) // mpegdemux, matroskademux, avidemux use video_nn with n=0,1,.., flupsdemux uses stream id
 808         {
 809                 GstElement *selector = gst_bin_get_by_name(pipeline , "switch_audio" );
 810                 audioStream audio;
 811                 audio.pad = pad;
 812                 _this->m_audioStreams.push_back(audio);
 813                 if ( selector )
 814                 {
 815                         GstPadLinkReturn ret = gst_pad_link(pad, gst_element_get_request_pad (selector, "sink%d"));
 816                         if ( _this->m_audioStreams.size() == 1 )
 817                         {
 818                                 _this->selectTrack(0);
 819                                 gst_element_set_state (_this->m_gst_pipeline, GST_STATE_PLAYING);
 820                         }
 821                         else
 822                                 g_object_set (G_OBJECT (selector), "select-all", FALSE, NULL);
 823                 }
 824                 else
 825                         gst_pad_link(pad, gst_element_get_static_pad(gst_bin_get_by_name(pipeline,"queue_audio"), "sink"));
 826         }
 827         if (g_strrstr(name,"video"))
 828         {
 829                 gst_pad_link(pad, gst_element_get_static_pad(gst_bin_get_by_name(pipeline,"queue_video"), "sink"));
 830         }
 831         g_free (name);
 832 }
 833
 834 void eServiceMP3::gstCBfilterPadAdded(GstElement *filter, GstPad *pad, gpointer user_data)
 835 {
 836         eServiceMP3 *_this = (eServiceMP3*)user_data;
 837         GstElement *decoder = gst_bin_get_by_name(GST_BIN(_this->m_gst_pipeline),"decoder");
 838         gst_pad_link(pad, gst_element_get_static_pad (decoder, "sink"));
 839 }
 840
 841 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
 842 {
 843         eServiceMP3 *_this = (eServiceMP3*)user_data;
 844         GstCaps *caps;
 845         GstStructure *str;
 846         GstPad *audiopad;
 847
 848         /* only link once */
 849         GstElement *audio = gst_bin_get_by_name(GST_BIN(_this->m_gst_pipeline),"audiobin");
 850         audiopad = gst_element_get_static_pad (audio, "sink");
 851         if ( !audiopad || GST_PAD_IS_LINKED (audiopad)) {
 852                 eDebug("audio already linked!");
 853                 g_object_unref (audiopad);
 854                 return;
 855         }
 856
 857         /* check media type */
 858         caps = gst_pad_get_caps (pad);
 859         str = gst_caps_get_structure (caps, 0);
 860         eDebug("gst new pad! %s", gst_structure_get_name (str));
 861
 862         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
 863                 gst_caps_unref (caps);
 864                 gst_object_unref (audiopad);
 865                 return;
 866         }
 867
 868         gst_caps_unref (caps);
 869         gst_pad_link (pad, audiopad);
 870 }
 871
 872 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
 873 {
 874         GstStructure *str;
 875
 876         /* check media type */
 877         caps = gst_pad_get_caps (pad);
 878         str = gst_caps_get_structure (caps, 0);
 879         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
 880         gst_caps_unref (caps);
 881 }
 882
 883 void eServiceMP3::gstPoll(const int&)
 884 {
 885                 /* ok, we have a serious problem here. gstBusSyncHandler sends
 886                    us the wakup signal, but likely before it was posted.
 887                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
 888
 889                    I need to understand the API a bit more to make this work
 890                    proplerly. */
 891         usleep(1);
 892
 893         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
 894         GstMessage *message;
 895         while ((message = gst_bus_pop (bus)))
 896         {
 897                 gstBusCall(bus, message);
 898                 gst_message_unref (message);
 899         }
 900 }
 901
 902 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
 903 #else
 904 #warning gstreamer not available, not building media player
 905 #endif