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/components/file_eraser.h>
  12 #include <lib/base/init_num.h>
  13 #include <lib/base/init.h>
  14 #include <gst/gst.h>
  15 #include <gst/pbutils/missing-plugins.h>
  16 #include <sys/stat.h>
  17 /* for subtitles */
  18 #include <lib/gui/esubtitle.h>
  19 #include <errno.h>
  20
  21 // eServiceFactoryMP3
  22
  23 eServiceFactoryMP3::eServiceFactoryMP3()
  24 {
  25         ePtr<eServiceCenter> sc;
  26
  27         eServiceCenter::getPrivInstance(sc);
  28         if (sc)
  29         {
  30                 std::list<std::string> extensions;
  31                 extensions.push_back("mp2");
  32                 extensions.push_back("mp3");
  33                 extensions.push_back("ogg");
  34                 extensions.push_back("mpg");
  35                 extensions.push_back("vob");
  36                 extensions.push_back("wav");
  37                 extensions.push_back("wave");
  38                 extensions.push_back("mkv");
  39                 extensions.push_back("avi");
  40                 extensions.push_back("dat");
  41                 extensions.push_back("flac");
  42                 extensions.push_back("mp4");
  43                 sc->addServiceFactory(eServiceFactoryMP3::id, this, extensions);
  44         }
  45
  46         m_service_info = new eStaticServiceMP3Info();
  47 }
  48
  49 eServiceFactoryMP3::~eServiceFactoryMP3()
  50 {
  51         ePtr<eServiceCenter> sc;
  52
  53         eServiceCenter::getPrivInstance(sc);
  54         if (sc)
  55                 sc->removeServiceFactory(eServiceFactoryMP3::id);
  56 }
  57
  58 DEFINE_REF(eServiceFactoryMP3)
  59
  60         // iServiceHandler
  61 RESULT eServiceFactoryMP3::play(const eServiceReference &ref, ePtr<iPlayableService> &ptr)
  62 {
  63                 // check resources...
  64         ptr = new eServiceMP3(ref.path.c_str());
  65         return 0;
  66 }
  67
  68 RESULT eServiceFactoryMP3::record(const eServiceReference &ref, ePtr<iRecordableService> &ptr)
  69 {
  70         ptr=0;
  71         return -1;
  72 }
  73
  74 RESULT eServiceFactoryMP3::list(const eServiceReference &, ePtr<iListableService> &ptr)
  75 {
  76         ptr=0;
  77         return -1;
  78 }
  79
  80 RESULT eServiceFactoryMP3::info(const eServiceReference &ref, ePtr<iStaticServiceInformation> &ptr)
  81 {
  82         ptr = m_service_info;
  83         return 0;
  84 }
  85
  86 class eMP3ServiceOfflineOperations: public iServiceOfflineOperations
  87 {
  88         DECLARE_REF(eMP3ServiceOfflineOperations);
  89         eServiceReference m_ref;
  90 public:
  91         eMP3ServiceOfflineOperations(const eServiceReference &ref);
  92
  93         RESULT deleteFromDisk(int simulate);
  94         RESULT getListOfFilenames(std::list<std::string> &);
  95 };
  96
  97 DEFINE_REF(eMP3ServiceOfflineOperations);
  98
  99 eMP3ServiceOfflineOperations::eMP3ServiceOfflineOperations(const eServiceReference &ref): m_ref((const eServiceReference&)ref)
 100 {
 101 }
 102
 103 RESULT eMP3ServiceOfflineOperations::deleteFromDisk(int simulate)
 104 {
 105         if (simulate)
 106                 return 0;
 107         else
 108         {
 109                 std::list<std::string> res;
 110                 if (getListOfFilenames(res))
 111                         return -1;
 112
 113                 eBackgroundFileEraser *eraser = eBackgroundFileEraser::getInstance();
 114                 if (!eraser)
 115                         eDebug("FATAL !! can't get background file eraser");
 116
 117                 for (std::list<std::string>::iterator i(res.begin()); i != res.end(); ++i)
 118                 {
 119                         eDebug("Removing %s...", i->c_str());
 120                         if (eraser)
 121                                 eraser->erase(i->c_str());
 122                         else
 123                                 ::unlink(i->c_str());
 124                 }
 125
 126                 return 0;
 127         }
 128 }
 129
 130 RESULT eMP3ServiceOfflineOperations::getListOfFilenames(std::list<std::string> &res)
 131 {
 132         res.clear();
 133         res.push_back(m_ref.path);
 134         return 0;
 135 }
 136
 137
 138 RESULT eServiceFactoryMP3::offlineOperations(const eServiceReference &ref, ePtr<iServiceOfflineOperations> &ptr)
 139 {
 140         ptr = new eMP3ServiceOfflineOperations(ref);
 141         return 0;
 142 }
 143
 144 // eStaticServiceMP3Info
 145
 146
 147 // eStaticServiceMP3Info is seperated from eServiceMP3 to give information
 148 // about unopened files.
 149
 150 // probably eServiceMP3 should use this class as well, and eStaticServiceMP3Info
 151 // should have a database backend where ID3-files etc. are cached.
 152 // this would allow listing the mp3 database based on certain filters.
 153
 154 DEFINE_REF(eStaticServiceMP3Info)
 155
 156 eStaticServiceMP3Info::eStaticServiceMP3Info()
 157 {
 158 }
 159
 160 RESULT eStaticServiceMP3Info::getName(const eServiceReference &ref, std::string &name)
 161 {
 162         size_t last = ref.path.rfind('/');
 163         if (last != std::string::npos)
 164                 name = ref.path.substr(last+1);
 165         else
 166                 name = ref.path;
 167         return 0;
 168 }
 169
 170 int eStaticServiceMP3Info::getLength(const eServiceReference &ref)
 171 {
 172         return -1;
 173 }
 174
 175 // eServiceMP3
 176
 177 eServiceMP3::eServiceMP3(const char *filename): m_filename(filename), m_pump(eApp, 1)
 178 {
 179         m_seekTimeout = eTimer::create(eApp);
 180         m_stream_tags = 0;
 181         m_currentAudioStream = 0;
 182         m_currentSubtitleStream = 0;
 183         m_subtitle_widget = 0;
 184         m_currentTrickRatio = 0;
 185         CONNECT(m_seekTimeout->timeout, eServiceMP3::seekTimeoutCB);
 186         CONNECT(m_pump.recv_msg, eServiceMP3::gstPoll);
 187         GstElement *source = 0;
 188
 189         GstElement *decoder = 0, *conv = 0, *flt = 0, *sink = 0; /* for audio */
 190
 191         GstElement *audio = 0, *switch_audio = 0, *queue_audio = 0, *video = 0, *queue_video = 0, *videodemux = 0;
 192
 193         m_state = stIdle;
 194         eDebug("SERVICEMP3 construct!");
 195
 196                 /* FIXME: currently, decodebin isn't possible for
 197                    video streams. in that case, make a manual pipeline. */
 198
 199         const char *ext = strrchr(filename, '.');
 200         if (!ext)
 201                 ext = filename;
 202
 203         sourceStream sourceinfo;
 204         if ( (strcasecmp(ext, ".mpeg") && strcasecmp(ext, ".mpg") && strcasecmp(ext, ".vob") && strcasecmp(ext, ".bin") && strcasecmp(ext, ".dat") ) == 0 )
 205                 sourceinfo.containertype = ctMPEGPS;
 206         else if ( strcasecmp(ext, ".ts") == 0 )
 207                 sourceinfo.containertype = ctMPEGTS;
 208         else if ( strcasecmp(ext, ".mkv") == 0 )
 209                 sourceinfo.containertype = ctMKV;
 210         else if ( strcasecmp(ext, ".avi") == 0 )
 211                 sourceinfo.containertype = ctAVI;
 212         else if ( strcasecmp(ext, ".mp4") == 0 )
 213                 sourceinfo.containertype = ctMP4;
 214         else if ( (strncmp(filename, "/autofs/", 8) || strncmp(filename+strlen(filename)-13, "/track-", 7) || strcasecmp(ext, ".wav")) == 0 )
 215                 sourceinfo.containertype = ctCDA;
 216         if ( strcasecmp(ext, ".dat") == 0 )
 217                 sourceinfo.containertype = ctVCD;
 218         if ( (strncmp(filename, "http://", 7)) == 0 )
 219                 sourceinfo.is_streaming = TRUE;
 220
 221         sourceinfo.is_video = ( sourceinfo.containertype && sourceinfo.containertype != ctCDA );
 222
 223         eDebug("filename=%s, containertype=%d, is_video=%d, is_streaming=%d", filename, sourceinfo.containertype, sourceinfo.is_video, sourceinfo.is_streaming);
 224
 225         int all_ok = 0;
 226
 227         m_gst_pipeline = gst_pipeline_new ("mediaplayer");
 228         if (!m_gst_pipeline)
 229                 m_error_message = "failed to create GStreamer pipeline!\n";
 230
 231         if ( sourceinfo.is_streaming )
 232         {
 233                 eDebug("play webradio!");
 234                 source = gst_element_factory_make ("neonhttpsrc", "http-source");
 235                 if (source)
 236                 {
 237                         g_object_set (G_OBJECT (source), "location", filename, NULL);
 238                         g_object_set (G_OBJECT (source), "automatic-redirect", TRUE, NULL);
 239                 }
 240                 else
 241                         m_error_message = "GStreamer plugin neonhttpsrc not available!\n";
 242         }
 243         else if ( sourceinfo.containertype == ctCDA )
 244         {
 245                 source = gst_element_factory_make ("cdiocddasrc", "cda-source");
 246                 if (source)
 247                 {
 248                         g_object_set (G_OBJECT (source), "device", "/dev/cdroms/cdrom0", NULL);
 249                         int track = atoi(filename+18);
 250                         eDebug("play audio CD track #%i",track);
 251                         if (track > 0)
 252                                 g_object_set (G_OBJECT (source), "track", track, NULL);
 253                 }
 254                 else
 255                         sourceinfo.containertype = ctNone;
 256         }
 257         if ( !sourceinfo.is_streaming && sourceinfo.containertype != ctCDA )
 258         {
 259                 source = gst_element_factory_make ("filesrc", "file-source");
 260                 if (source)
 261                         g_object_set (G_OBJECT (source), "location", filename, NULL);
 262                 else
 263                         m_error_message = "GStreamer can't open filesrc " + (std::string)filename + "!\n";
 264         }
 265         if ( sourceinfo.is_video )
 266         {
 267                         /* filesrc -> mpegdemux -> | queue_audio -> dvbaudiosink
 268                                                    | queue_video -> dvbvideosink */
 269
 270                 audio = gst_element_factory_make("dvbaudiosink", "audiosink");
 271                 if (!audio)
 272                         m_error_message += "failed to create Gstreamer element dvbaudiosink\n";
 273
 274                 video = gst_element_factory_make("dvbvideosink", "videosink");
 275                 if (!video)
 276                         m_error_message += "failed to create Gstreamer element dvbvideosink\n";
 277
 278                 queue_audio = gst_element_factory_make("queue", "queue_audio");
 279                 queue_video = gst_element_factory_make("queue", "queue_video");
 280
 281                 std::string demux_type;
 282                 switch (sourceinfo.containertype)
 283                 {
 284                         case ctMPEGTS:
 285                                 demux_type = "flutsdemux";
 286                                 break;
 287                         case ctMPEGPS:
 288                         case ctVCD:
 289                                 demux_type = "flupsdemux";
 290                                 break;
 291                         case ctMKV:
 292                                 demux_type = "matroskademux";
 293                                 break;
 294                         case ctAVI:
 295                                 demux_type = "avidemux";
 296                                 break;
 297                         case ctMP4:
 298                                 demux_type = "qtdemux";
 299                                 break;
 300                         default:
 301                                 break;
 302                 }
 303                 videodemux = gst_element_factory_make(demux_type.c_str(), "videodemux");
 304                 if (!videodemux)
 305                         m_error_message = "GStreamer plugin " + demux_type + " not available!\n";
 306
 307                 switch_audio = gst_element_factory_make ("input-selector", "switch_audio");
 308                 if (!switch_audio)
 309                         m_error_message = "GStreamer plugin input-selector not available!\n";
 310
 311                 if (audio && queue_audio && video && queue_video && videodemux && switch_audio)
 312                 {
 313                         g_object_set (G_OBJECT (queue_audio), "max-size-bytes", 256*1024, NULL);
 314                         g_object_set (G_OBJECT (queue_audio), "max-size-buffers", 0, NULL);
 315                         g_object_set (G_OBJECT (queue_audio), "max-size-time", (guint64)0, NULL);
 316                         g_object_set (G_OBJECT (queue_video), "max-size-buffers", 0, NULL);
 317                         g_object_set (G_OBJECT (queue_video), "max-size-bytes", 2*1024*1024, NULL);
 318                         g_object_set (G_OBJECT (queue_video), "max-size-time", (guint64)0, NULL);
 319                         g_object_set (G_OBJECT (switch_audio), "select-all", TRUE, NULL);
 320                         all_ok = 1;
 321                 }
 322         } else /* is audio */
 323         {
 324
 325                         /* filesrc -> decodebin -> audioconvert -> capsfilter -> alsasink */
 326                 decoder = gst_element_factory_make ("decodebin", "decoder");
 327                 if (!decoder)
 328                         m_error_message += "failed to create Gstreamer element decodebin\n";
 329
 330                 conv = gst_element_factory_make ("audioconvert", "converter");
 331                 if (!conv)
 332                         m_error_message += "failed to create Gstreamer element audioconvert\n";
 333
 334                 flt = gst_element_factory_make ("capsfilter", "flt");
 335                 if (!flt)
 336                         m_error_message += "failed to create Gstreamer element capsfilter\n";
 337
 338                         /* for some reasons, we need to set the sample format to depth/width=16, because auto negotiation doesn't work. */
 339                         /* endianness, however, is not required to be set anymore. */
 340                 if (flt)
 341                 {
 342                         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, */NULL);
 343                         g_object_set (G_OBJECT (flt), "caps", caps, NULL);
 344                         gst_caps_unref(caps);
 345                 }
 346
 347                 sink = gst_element_factory_make ("alsasink", "alsa-output");
 348                 if (!sink)
 349                         m_error_message += "failed to create Gstreamer element alsasink\n";
 350
 351                 if (source && decoder && conv && sink)
 352                         all_ok = 1;
 353         }
 354         if (m_gst_pipeline && all_ok)
 355         {
 356                 gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
 357
 358                 if ( sourceinfo.containertype == ctCDA )
 359                 {
 360                         queue_audio = gst_element_factory_make("queue", "queue_audio");
 361                         g_object_set (G_OBJECT (sink), "preroll-queue-len", 80, NULL);
 362                         gst_bin_add_many (GST_BIN (m_gst_pipeline), source, queue_audio, conv, sink, NULL);
 363                         gst_element_link_many(source, queue_audio, conv, sink, NULL);
 364                 }
 365                 else if ( sourceinfo.is_video )
 366                 {
 367                         char srt_filename[strlen(filename)+1];
 368                         strncpy(srt_filename,filename,strlen(filename)-3);
 369                         srt_filename[strlen(filename)-3]='\0';
 370                         strcat(srt_filename, "srt");
 371                         struct stat buffer;
 372                         if (stat(srt_filename, &buffer) == 0)
 373                         {
 374                                 eDebug("subtitle file found: %s",srt_filename);
 375                                 GstElement *subsource = gst_element_factory_make ("filesrc", "srt_source");
 376                                 g_object_set (G_OBJECT (subsource), "location", srt_filename, NULL);
 377                                 gst_bin_add(GST_BIN (m_gst_pipeline), subsource);
 378                                 GstPad *switchpad = gstCreateSubtitleSink(this, stSRT);
 379                                 gst_pad_link(gst_element_get_pad (subsource, "src"), switchpad);
 380                                 subtitleStream subs;
 381                                 subs.pad = switchpad;
 382                                 subs.type = stSRT;
 383                                 subs.language_code = std::string("und");
 384                                 m_subtitleStreams.push_back(subs);
 385                         }
 386                         gst_bin_add_many(GST_BIN(m_gst_pipeline), source, videodemux, audio, queue_audio, video, queue_video, switch_audio, NULL);
 387
 388                         if ( sourceinfo.containertype == ctVCD )
 389                         {
 390                                 GstElement *cdxaparse = gst_element_factory_make("cdxaparse", "cdxaparse");
 391                                 gst_bin_add(GST_BIN(m_gst_pipeline), cdxaparse);
 392                                 gst_element_link(source, cdxaparse);
 393                                 gst_element_link(cdxaparse, videodemux);
 394                         }
 395                         else
 396                                 gst_element_link(source, videodemux);
 397
 398                         gst_element_link(switch_audio, queue_audio);
 399                         gst_element_link(queue_audio, audio);
 400                         gst_element_link(queue_video, video);
 401                         g_signal_connect(videodemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 402
 403                 } else /* is audio*/
 404                 {
 405                         queue_audio = gst_element_factory_make("queue", "queue_audio");
 406
 407                         g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
 408                         g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
 409
 410                         g_object_set (G_OBJECT (sink), "preroll-queue-len", 80, NULL);
 411
 412                                 /* gst_bin will take the 'floating references' */
 413                         gst_bin_add_many (GST_BIN (m_gst_pipeline),
 414                                                 source, queue_audio, decoder, NULL);
 415
 416                                 /* in decodebin's case we can just connect the source with the decodebin, and decodebin will take care about id3demux (or whatever is required) */
 417                         gst_element_link_many(source, queue_audio, decoder, NULL);
 418
 419                                 /* create audio bin with the audioconverter, the capsfilter and the audiosink */
 420                         audio = gst_bin_new ("audiobin");
 421
 422                         GstPad *audiopad = gst_element_get_static_pad (conv, "sink");
 423                         gst_bin_add_many(GST_BIN(audio), conv, flt, sink, NULL);
 424                         gst_element_link_many(conv, flt, sink, NULL);
 425                         gst_element_add_pad(audio, gst_ghost_pad_new ("sink", audiopad));
 426                         gst_object_unref(audiopad);
 427                         gst_bin_add (GST_BIN(m_gst_pipeline), audio);
 428                 }
 429         } else
 430         {
 431                 m_event((iPlayableService*)this, evUser+12);
 432
 433                 if (m_gst_pipeline)
 434                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 435                 if (source)
 436                         gst_object_unref(GST_OBJECT(source));
 437                 if (decoder)
 438                         gst_object_unref(GST_OBJECT(decoder));
 439                 if (conv)
 440                         gst_object_unref(GST_OBJECT(conv));
 441                 if (sink)
 442                         gst_object_unref(GST_OBJECT(sink));
 443
 444                 if (audio)
 445                         gst_object_unref(GST_OBJECT(audio));
 446                 if (queue_audio)
 447                         gst_object_unref(GST_OBJECT(queue_audio));
 448                 if (video)
 449                         gst_object_unref(GST_OBJECT(video));
 450                 if (queue_video)
 451                         gst_object_unref(GST_OBJECT(queue_video));
 452                 if (videodemux)
 453                         gst_object_unref(GST_OBJECT(videodemux));
 454                 if (switch_audio)
 455                         gst_object_unref(GST_OBJECT(switch_audio));
 456
 457                 eDebug("sorry, can't play: %s",m_error_message.c_str());
 458                 m_gst_pipeline = 0;
 459         }
 460
 461         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 462 }
 463
 464 eServiceMP3::~eServiceMP3()
 465 {
 466         delete m_subtitle_widget;
 467         if (m_state == stRunning)
 468                 stop();
 469
 470         if (m_stream_tags)
 471                 gst_tag_list_free(m_stream_tags);
 472
 473         if (m_gst_pipeline)
 474         {
 475                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 476                 eDebug("SERVICEMP3 destruct!");
 477         }
 478 }
 479
 480 DEFINE_REF(eServiceMP3);
 481
 482 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 483 {
 484         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 485         return 0;
 486 }
 487
 488 RESULT eServiceMP3::start()
 489 {
 490         assert(m_state == stIdle);
 491
 492         m_state = stRunning;
 493         if (m_gst_pipeline)
 494         {
 495                 eDebug("starting pipeline");
 496                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 497         }
 498         m_event(this, evStart);
 499         return 0;
 500 }
 501
 502 RESULT eServiceMP3::stop()
 503 {
 504         assert(m_state != stIdle);
 505         if (m_state == stStopped)
 506                 return -1;
 507         eDebug("MP3: %s stop\n", m_filename.c_str());
 508         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 509         m_state = stStopped;
 510         return 0;
 511 }
 512
 513 RESULT eServiceMP3::setTarget(int target)
 514 {
 515         return -1;
 516 }
 517
 518 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 519 {
 520         ptr=this;
 521         return 0;
 522 }
 523
 524 RESULT eServiceMP3::setSlowMotion(int ratio)
 525 {
 526         /* we can't do slomo yet */
 527         return -1;
 528 }
 529
 530 RESULT eServiceMP3::setFastForward(int ratio)
 531 {
 532         m_currentTrickRatio = ratio;
 533         if (ratio)
 534                 m_seekTimeout->start(1000, 0);
 535         else
 536                 m_seekTimeout->stop();
 537         return 0;
 538 }
 539
 540 void eServiceMP3::seekTimeoutCB()
 541 {
 542         pts_t ppos, len;
 543         getPlayPosition(ppos);
 544         getLength(len);
 545         ppos += 90000*m_currentTrickRatio;
 546
 547         if (ppos < 0)
 548         {
 549                 ppos = 0;
 550                 m_seekTimeout->stop();
 551         }
 552         if (ppos > len)
 553         {
 554                 ppos = 0;
 555                 stop();
 556                 m_seekTimeout->stop();
 557                 return;
 558         }
 559         seekTo(ppos);
 560 }
 561
 562                 // iPausableService
 563 RESULT eServiceMP3::pause()
 564 {
 565         if (!m_gst_pipeline)
 566                 return -1;
 567         GstStateChangeReturn res = gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 568         if (res == GST_STATE_CHANGE_ASYNC)
 569         {
 570                 pts_t ppos;
 571                 getPlayPosition(ppos);
 572                 seekTo(ppos);
 573         }
 574         return 0;
 575 }
 576
 577 RESULT eServiceMP3::unpause()
 578 {
 579         if (!m_gst_pipeline)
 580                 return -1;
 581
 582         GstStateChangeReturn res;
 583         res = gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 584         return 0;
 585 }
 586
 587         /* iSeekableService */
 588 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 589 {
 590         ptr = this;
 591         return 0;
 592 }
 593
 594 RESULT eServiceMP3::getLength(pts_t &pts)
 595 {
 596         if (!m_gst_pipeline)
 597                 return -1;
 598         if (m_state != stRunning)
 599                 return -1;
 600
 601         GstFormat fmt = GST_FORMAT_TIME;
 602         gint64 len;
 603
 604         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 605                 return -1;
 606
 607                 /* len is in nanoseconds. we have 90 000 pts per second. */
 608
 609         pts = len / 11111;
 610         return 0;
 611 }
 612
 613 RESULT eServiceMP3::seekTo(pts_t to)
 614 {
 615         if (!m_gst_pipeline)
 616                 return -1;
 617
 618                 /* convert pts to nanoseconds */
 619         gint64 time_nanoseconds = to * 11111LL;
 620         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 621                 GST_SEEK_TYPE_SET, time_nanoseconds,
 622                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 623         {
 624                 eDebug("SEEK failed");
 625                 return -1;
 626         }
 627         return 0;
 628 }
 629
 630 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 631 {
 632         if (!m_gst_pipeline)
 633                 return -1;
 634
 635         pts_t ppos;
 636         getPlayPosition(ppos);
 637         ppos += to * direction;
 638         if (ppos < 0)
 639                 ppos = 0;
 640         seekTo(ppos);
 641
 642         return 0;
 643 }
 644
 645 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 646 {
 647         if (!m_gst_pipeline)
 648                 return -1;
 649         if (m_state != stRunning)
 650                 return -1;
 651
 652         GstFormat fmt = GST_FORMAT_TIME;
 653         gint64 len;
 654
 655         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 656                 return -1;
 657
 658                 /* len is in nanoseconds. we have 90 000 pts per second. */
 659         pts = len / 11111;
 660         return 0;
 661 }
 662
 663 RESULT eServiceMP3::setTrickmode(int trick)
 664 {
 665                 /* trickmode is not yet supported by our dvbmediasinks. */
 666         return -1;
 667 }
 668
 669 RESULT eServiceMP3::isCurrentlySeekable()
 670 {
 671         return 1;
 672 }
 673
 674 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 675 {
 676         i = this;
 677         return 0;
 678 }
 679
 680 RESULT eServiceMP3::getName(std::string &name)
 681 {
 682         name = m_filename;
 683         size_t n = name.rfind('/');
 684         if (n != std::string::npos)
 685                 name = name.substr(n + 1);
 686         return 0;
 687 }
 688
 689 int eServiceMP3::getInfo(int w)
 690 {
 691         gchar *tag = 0;
 692
 693         switch (w)
 694         {
 695         case sTitle:
 696         case sArtist:
 697         case sAlbum:
 698         case sComment:
 699         case sTracknumber:
 700         case sGenre:
 701         case sVideoType:
 702         case sTimeCreate:
 703         case sUser+12:
 704                 return resIsString;
 705         case sCurrentTitle:
 706                 tag = GST_TAG_TRACK_NUMBER;
 707                 break;
 708         case sTotalTitles:
 709                 tag = GST_TAG_TRACK_COUNT;
 710                 break;
 711         default:
 712                 return resNA;
 713         }
 714
 715         if (!m_stream_tags || !tag)
 716                 return 0;
 717
 718         guint value;
 719         if (gst_tag_list_get_uint(m_stream_tags, tag, &value))
 720                 return (int) value;
 721
 722         return 0;
 723
 724 }
 725
 726 std::string eServiceMP3::getInfoString(int w)
 727 {
 728         if ( !m_stream_tags )
 729                 return "";
 730         gchar *tag = 0;
 731         switch (w)
 732         {
 733         case sTitle:
 734                 tag = GST_TAG_TITLE;
 735                 break;
 736         case sArtist:
 737                 tag = GST_TAG_ARTIST;
 738                 break;
 739         case sAlbum:
 740                 tag = GST_TAG_ALBUM;
 741                 break;
 742         case sComment:
 743                 tag = GST_TAG_COMMENT;
 744                 break;
 745         case sTracknumber:
 746                 tag = GST_TAG_TRACK_NUMBER;
 747                 break;
 748         case sGenre:
 749                 tag = GST_TAG_GENRE;
 750                 break;
 751         case sVideoType:
 752                 tag = GST_TAG_VIDEO_CODEC;
 753                 break;
 754         case sTimeCreate:
 755                 GDate *date;
 756                 if (gst_tag_list_get_date(m_stream_tags, GST_TAG_DATE, &date))
 757                 {
 758                         gchar res[5];
 759                         g_date_strftime (res, sizeof(res), "%Y", date);
 760                         return (std::string)res;
 761                 }
 762                 break;
 763         case sUser+12:
 764                 return m_error_message;
 765         default:
 766                 return "";
 767         }
 768         if ( !tag )
 769                 return "";
 770         gchar *value;
 771         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 772         {
 773                 std::string res = value;
 774                 g_free(value);
 775                 return res;
 776         }
 777         return "";
 778 }
 779
 780 RESULT eServiceMP3::audioChannel(ePtr<iAudioChannelSelection> &ptr)
 781 {
 782         ptr = this;
 783         return 0;
 784 }
 785
 786 RESULT eServiceMP3::audioTracks(ePtr<iAudioTrackSelection> &ptr)
 787 {
 788         ptr = this;
 789         return 0;
 790 }
 791
 792 RESULT eServiceMP3::subtitle(ePtr<iSubtitleOutput> &ptr)
 793 {
 794         ptr = this;
 795         return 0;
 796 }
 797
 798 int eServiceMP3::getNumberOfTracks()
 799 {
 800         return m_audioStreams.size();
 801 }
 802
 803 int eServiceMP3::getCurrentTrack()
 804 {
 805         return m_currentAudioStream;
 806 }
 807
 808 RESULT eServiceMP3::selectTrack(unsigned int i)
 809 {
 810         int ret = selectAudioStream(i);
 811         /* flush */
 812         pts_t ppos;
 813         getPlayPosition(ppos);
 814         seekTo(ppos);
 815
 816         return ret;
 817 }
 818
 819 int eServiceMP3::selectAudioStream(int i)
 820 {
 821         gint nb_sources;
 822         GstPad *active_pad;
 823         GstElement *switch_audio = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_audio");
 824         if ( !switch_audio )
 825         {
 826                 eDebug("can't switch audio tracks! gst-plugin-selector needed");
 827                 return -1;
 828         }
 829         g_object_get (G_OBJECT (switch_audio), "n-pads", &nb_sources, NULL);
 830         if ( (unsigned int)i >= m_audioStreams.size() || i >= nb_sources || (unsigned int)m_currentAudioStream >= m_audioStreams.size() )
 831                 return -2;
 832         char sinkpad[8];
 833         sprintf(sinkpad, "sink%d", i);
 834         g_object_set (G_OBJECT (switch_audio), "active-pad", gst_element_get_pad (switch_audio, sinkpad), NULL);
 835         g_object_get (G_OBJECT (switch_audio), "active-pad", &active_pad, NULL);
 836         gchar *name;
 837         name = gst_pad_get_name (active_pad);
 838         eDebug ("switched audio to (%s)", name);
 839         g_free(name);
 840         m_currentAudioStream = i;
 841         return 0;
 842 }
 843
 844 int eServiceMP3::getCurrentChannel()
 845 {
 846         return STEREO;
 847 }
 848
 849 RESULT eServiceMP3::selectChannel(int i)
 850 {
 851         eDebug("eServiceMP3::selectChannel(%i)",i);
 852         return 0;
 853 }
 854
 855 RESULT eServiceMP3::getTrackInfo(struct iAudioTrackInfo &info, unsigned int i)
 856 {
 857 //      eDebug("eServiceMP3::getTrackInfo(&info, %i)",i);
 858         if (i >= m_audioStreams.size())
 859                 return -2;
 860         if (m_audioStreams[i].type == atMPEG)
 861                 info.m_description = "MPEG";
 862         else if (m_audioStreams[i].type == atMP3)
 863                 info.m_description = "MP3";
 864         else if (m_audioStreams[i].type == atAC3)
 865                 info.m_description = "AC3";
 866         else if (m_audioStreams[i].type == atAAC)
 867                 info.m_description = "AAC";
 868         else if (m_audioStreams[i].type == atDTS)
 869                 info.m_description = "DTS";
 870         else if (m_audioStreams[i].type == atPCM)
 871                 info.m_description = "PCM";
 872         else if (m_audioStreams[i].type == atOGG)
 873                 info.m_description = "OGG";
 874         else
 875                 info.m_description = "???";
 876         if (info.m_language.empty())
 877                 info.m_language = m_audioStreams[i].language_code;
 878         return 0;
 879 }
 880
 881 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 882 {
 883         if (!msg)
 884                 return;
 885         gchar *sourceName;
 886         GstObject *source;
 887
 888         source = GST_MESSAGE_SRC(msg);
 889         sourceName = gst_object_get_name(source);
 890 #if 0
 891         if (gst_message_get_structure(msg))
 892         {
 893                 gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 894                 eDebug("gst_message from %s: %s", sourceName, string);
 895                 g_free(string);
 896         }
 897         else
 898                 eDebug("gst_message from %s: %s (without structure)", sourceName, GST_MESSAGE_TYPE_NAME(msg));
 899 #endif
 900         switch (GST_MESSAGE_TYPE (msg))
 901         {
 902         case GST_MESSAGE_EOS:
 903                 m_event((iPlayableService*)this, evEOF);
 904                 break;
 905         case GST_MESSAGE_ERROR:
 906         {
 907                 gchar *debug;
 908                 GError *err;
 909
 910                 gst_message_parse_error (msg, &err, &debug);
 911                 g_free (debug);
 912                 eWarning("Gstreamer error: %s (%i)", err->message, err->code );
 913                 if ( err->domain == GST_STREAM_ERROR && err->code == GST_STREAM_ERROR_DECODE )
 914                 {
 915                         if ( g_strrstr(sourceName, "videosink") )
 916                                 m_event((iPlayableService*)this, evUser+11);
 917                 }
 918                 g_error_free(err);
 919                         /* TODO: signal error condition to user */
 920                 break;
 921         }
 922         case GST_MESSAGE_TAG:
 923         {
 924                 GstTagList *tags, *result;
 925                 gst_message_parse_tag(msg, &tags);
 926
 927                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 928                 if (result)
 929                 {
 930                         if (m_stream_tags)
 931                                 gst_tag_list_free(m_stream_tags);
 932                         m_stream_tags = result;
 933                 }
 934
 935                 gchar *g_audiocodec;
 936                 if ( gst_tag_list_get_string(tags, GST_TAG_AUDIO_CODEC, &g_audiocodec) && m_audioStreams.size() == 0 )
 937                 {
 938                         GstPad* pad = gst_element_get_pad (GST_ELEMENT(source), "src");
 939                         GstCaps* caps = gst_pad_get_caps(pad);
 940                         GstStructure* str = gst_caps_get_structure(caps, 0);
 941                         if ( !str )
 942                                 break;
 943                         audioStream audio;
 944                         audio.type = gstCheckAudioPad(str);
 945                         m_audioStreams.push_back(audio);
 946                 }
 947
 948                 GValue *gv_image = gst_tag_list_get_value_index(tags, GST_TAG_IMAGE, 0);
 949                 if ( gv_image )
 950                 {
 951                         GstBuffer *buf_image;
 952                         buf_image = gst_value_get_buffer (gv_image);
 953                         int fd = open("/tmp/.id3coverart", O_CREAT|O_WRONLY|O_TRUNC, 0644);
 954                         int ret = write(fd, GST_BUFFER_DATA(buf_image), GST_BUFFER_SIZE(buf_image));
 955                         close(fd);
 956                         m_event((iPlayableService*)this, evUser+13);
 957                 }
 958
 959                 gst_tag_list_free(tags);
 960                 m_event((iPlayableService*)this, evUpdatedInfo);
 961                 break;
 962         }
 963         case GST_MESSAGE_ASYNC_DONE:
 964         {
 965                 GstTagList *tags;
 966                 for (std::vector<audioStream>::iterator IterAudioStream(m_audioStreams.begin()); IterAudioStream != m_audioStreams.end(); ++IterAudioStream)
 967                 {
 968                         if ( IterAudioStream->pad )
 969                         {
 970                                 g_object_get(IterAudioStream->pad, "tags", &tags, NULL);
 971                                 gchar *g_language;
 972                                 if ( gst_is_tag_list(tags) && gst_tag_list_get_string(tags, GST_TAG_LANGUAGE_CODE, &g_language) )
 973                                 {
 974                                         eDebug("found audio language %s",g_language);
 975                                         IterAudioStream->language_code = std::string(g_language);
 976                                         g_free (g_language);
 977                                 }
 978                         }
 979                 }
 980                 for (std::vector<subtitleStream>::iterator IterSubtitleStream(m_subtitleStreams.begin()); IterSubtitleStream != m_subtitleStreams.end(); ++IterSubtitleStream)
 981                 {
 982                         if ( IterSubtitleStream->pad )
 983                         {
 984                                 g_object_get(IterSubtitleStream->pad, "tags", &tags, NULL);
 985                                 gchar *g_language;
 986                                 if ( gst_is_tag_list(tags) && gst_tag_list_get_string(tags, GST_TAG_LANGUAGE_CODE, &g_language) )
 987                                 {
 988                                         eDebug("found subtitle language %s",g_language);
 989                                         IterSubtitleStream->language_code = std::string(g_language);
 990                                         g_free (g_language);
 991                                 }
 992                         }
 993                 }
 994         }
 995         case GST_MESSAGE_ELEMENT:
 996         {
 997                 if ( gst_is_missing_plugin_message(msg) )
 998                 {
 999                         gchar *description = gst_missing_plugin_message_get_description(msg);
1000                         if ( description )
1001                         {
1002                                 m_error_message = "GStreamer plugin " + (std::string)description + " not available!\n";
1003                                 g_free(description);
1004                                 m_event((iPlayableService*)this, evUser+12);
1005                         }
1006                 }
1007         }
1008         default:
1009                 break;
1010         }
1011         g_free (sourceName);
1012 }
1013
1014 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
1015 {
1016         eServiceMP3 *_this = (eServiceMP3*)user_data;
1017         _this->m_pump.send(1);
1018                 /* wake */
1019         return GST_BUS_PASS;
1020 }
1021
1022 audiotype_t eServiceMP3::gstCheckAudioPad(GstStructure* structure)
1023 {
1024         const gchar* type;
1025         type = gst_structure_get_name(structure);
1026
1027         if (!strcmp(type, "audio/mpeg")) {
1028                         gint mpegversion, layer = 0;
1029                         gst_structure_get_int (structure, "mpegversion", &mpegversion);
1030                         gst_structure_get_int (structure, "layer", &layer);
1031                         eDebug("mime audio/mpeg version %d layer %d", mpegversion, layer);
1032                         switch (mpegversion) {
1033                                 case 1:
1034                                 {
1035                                         if ( layer == 3 )
1036                                                 return atMP3;
1037                                         else
1038                                                 return atMPEG;
1039                                 }
1040                                 case 2:
1041                                         return atMPEG;
1042                                 case 4:
1043                                         return atAAC;
1044                                 default:
1045                                         return atUnknown;
1046                         }
1047                 }
1048         else
1049         {
1050                 eDebug("mime %s", type);
1051                 if (!strcmp(type, "audio/x-ac3") || !strcmp(type, "audio/ac3"))
1052                         return atAC3;
1053                 else if (!strcmp(type, "audio/x-dts") || !strcmp(type, "audio/dts"))
1054                         return atDTS;
1055                 else if (!strcmp(type, "audio/x-raw-int"))
1056                         return atPCM;
1057         }
1058         return atUnknown;
1059 }
1060
1061 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
1062 {
1063         const gchar* type;
1064         GstCaps* caps;
1065         GstStructure* str;
1066         caps = gst_pad_get_caps(pad);
1067         str = gst_caps_get_structure(caps, 0);
1068         type = gst_structure_get_name(str);
1069
1070         eDebug("A new pad %s:%s was created", GST_OBJECT_NAME (decodebin), GST_OBJECT_NAME (pad));
1071
1072         eServiceMP3 *_this = (eServiceMP3*)user_data;
1073         GstBin *pipeline = GST_BIN(_this->m_gst_pipeline);
1074         if (g_strrstr(type,"audio"))
1075         {
1076                 audioStream audio;
1077                 audio.type = _this->gstCheckAudioPad(str);
1078                 GstElement *switch_audio = gst_bin_get_by_name(pipeline , "switch_audio");
1079                 if ( switch_audio )
1080                 {
1081                         GstPad *sinkpad = gst_element_get_request_pad (switch_audio, "sink%d");
1082                         gst_pad_link(pad, sinkpad);
1083                         audio.pad = sinkpad;
1084                         _this->m_audioStreams.push_back(audio);
1085
1086                         if ( _this->m_audioStreams.size() == 1 )
1087                         {
1088                                 _this->selectAudioStream(0);
1089                                 gst_element_set_state (_this->m_gst_pipeline, GST_STATE_PLAYING);
1090                         }
1091                         else
1092                                 g_object_set (G_OBJECT (switch_audio), "select-all", FALSE, NULL);
1093                 }
1094                 else
1095                 {
1096                         gst_pad_link(pad, gst_element_get_static_pad(gst_bin_get_by_name(pipeline,"queue_audio"), "sink"));
1097                         _this->m_audioStreams.push_back(audio);
1098                 }
1099         }
1100         if (g_strrstr(type,"video"))
1101         {
1102                 gst_pad_link(pad, gst_element_get_static_pad(gst_bin_get_by_name(pipeline,"queue_video"), "sink"));
1103         }
1104         if (g_strrstr(type,"application/x-ssa") || g_strrstr(type,"application/x-ass"))
1105         {
1106                 GstPad *switchpad = _this->gstCreateSubtitleSink(_this, stSSA);
1107                 gst_pad_link(pad, switchpad);
1108                 subtitleStream subs;
1109                 subs.pad = switchpad;
1110                 subs.type = stSSA;
1111                 _this->m_subtitleStreams.push_back(subs);
1112         }
1113         if (g_strrstr(type,"text/plain"))
1114         {
1115                 GstPad *switchpad = _this->gstCreateSubtitleSink(_this, stPlainText);
1116                 gst_pad_link(pad, switchpad);
1117                 subtitleStream subs;
1118                 subs.pad = switchpad;
1119                 subs.type = stPlainText;
1120                 _this->m_subtitleStreams.push_back(subs);
1121         }
1122 }
1123
1124 GstPad* eServiceMP3::gstCreateSubtitleSink(eServiceMP3* _this, subtype_t type)
1125 {
1126         GstBin *pipeline = GST_BIN(_this->m_gst_pipeline);
1127         GstElement *switch_subparse = gst_bin_get_by_name(pipeline,"switch_subparse");
1128         if ( !switch_subparse )
1129         {
1130                 switch_subparse = gst_element_factory_make ("input-selector", "switch_subparse");
1131                 GstElement *sink = gst_element_factory_make("fakesink", "sink_subtitles");
1132                 gst_bin_add_many(pipeline, switch_subparse, sink, NULL);
1133                 gst_element_link(switch_subparse, sink);
1134                 g_object_set (G_OBJECT(sink), "signal-handoffs", TRUE, NULL);
1135                 g_object_set (G_OBJECT(sink), "sync", TRUE, NULL);
1136                 g_object_set (G_OBJECT(sink), "async", FALSE, NULL);
1137                 g_signal_connect(sink, "handoff", G_CALLBACK(_this->gstCBsubtitleAvail), _this);
1138
1139                 // order is essential since requested sink pad names can't be explicitely chosen
1140                 GstElement *switch_substream_plain = gst_element_factory_make ("input-selector", "switch_substream_plain");
1141                 gst_bin_add(pipeline, switch_substream_plain);
1142                 GstPad *sinkpad_plain = gst_element_get_request_pad (switch_subparse, "sink%d");
1143                 gst_pad_link(gst_element_get_pad (switch_substream_plain, "src"), sinkpad_plain);
1144
1145                 GstElement *switch_substream_ssa = gst_element_factory_make ("input-selector", "switch_substream_ssa");
1146                 GstElement *ssaparse = gst_element_factory_make("ssaparse", "ssaparse");
1147                 gst_bin_add_many(pipeline, switch_substream_ssa, ssaparse, NULL);
1148                 GstPad *sinkpad_ssa = gst_element_get_request_pad (switch_subparse, "sink%d");
1149                 gst_element_link(switch_substream_ssa, ssaparse);
1150                 gst_pad_link(gst_element_get_pad (ssaparse, "src"), sinkpad_ssa);
1151
1152                 GstElement *switch_substream_srt = gst_element_factory_make ("input-selector", "switch_substream_srt");
1153                 GstElement *srtparse = gst_element_factory_make("subparse", "srtparse");
1154                 gst_bin_add_many(pipeline, switch_substream_srt, srtparse, NULL);
1155                 GstPad *sinkpad_srt = gst_element_get_request_pad (switch_subparse, "sink%d");
1156                 gst_element_link(switch_substream_srt, srtparse);
1157                 gst_pad_link(gst_element_get_pad (srtparse, "src"), sinkpad_srt);
1158                 g_object_set (G_OBJECT(srtparse), "subtitle-encoding", "ISO-8859-15", NULL);
1159         }
1160
1161         switch (type)
1162         {
1163                 case stSSA:
1164                         return gst_element_get_request_pad (gst_bin_get_by_name(pipeline,"switch_substream_ssa"), "sink%d");
1165                 case stSRT:
1166                         return gst_element_get_request_pad (gst_bin_get_by_name(pipeline,"switch_substream_srt"), "sink%d");
1167                 case stPlainText:
1168                 default:
1169                         break;
1170         }
1171         return gst_element_get_request_pad (gst_bin_get_by_name(pipeline,"switch_substream_plain"), "sink%d");
1172 }
1173
1174 void eServiceMP3::gstCBfilterPadAdded(GstElement *filter, GstPad *pad, gpointer user_data)
1175 {
1176         eServiceMP3 *_this = (eServiceMP3*)user_data;
1177         GstElement *decoder = gst_bin_get_by_name(GST_BIN(_this->m_gst_pipeline),"decoder");
1178         gst_pad_link(pad, gst_element_get_static_pad (decoder, "sink"));
1179 }
1180
1181 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
1182 {
1183         eServiceMP3 *_this = (eServiceMP3*)user_data;
1184         GstCaps *caps;
1185         GstStructure *str;
1186         GstPad *audiopad;
1187
1188         /* only link once */
1189         GstElement *audiobin = gst_bin_get_by_name(GST_BIN(_this->m_gst_pipeline),"audiobin");
1190         audiopad = gst_element_get_static_pad (audiobin, "sink");
1191         if ( !audiopad || GST_PAD_IS_LINKED (audiopad)) {
1192                 eDebug("audio already linked!");
1193                 g_object_unref (audiopad);
1194                 return;
1195         }
1196
1197         /* check media type */
1198         caps = gst_pad_get_caps (pad);
1199         str = gst_caps_get_structure (caps, 0);
1200         eDebug("gst new pad! %s", gst_structure_get_name (str));
1201
1202         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
1203                 gst_caps_unref (caps);
1204                 gst_object_unref (audiopad);
1205                 return;
1206         }
1207
1208         gst_caps_unref (caps);
1209         gst_pad_link (pad, audiopad);
1210 }
1211
1212 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
1213 {
1214         GstStructure *str;
1215
1216         /* check media type */
1217         caps = gst_pad_get_caps (pad);
1218         str = gst_caps_get_structure (caps, 0);
1219         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
1220         gst_caps_unref (caps);
1221 }
1222
1223 void eServiceMP3::gstPoll(const int&)
1224 {
1225                 /* ok, we have a serious problem here. gstBusSyncHandler sends
1226                    us the wakup signal, but likely before it was posted.
1227                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
1228
1229                    I need to understand the API a bit more to make this work
1230                    proplerly. */
1231         usleep(1);
1232
1233         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
1234         GstMessage *message;
1235         while ((message = gst_bus_pop (bus)))
1236         {
1237                 gstBusCall(bus, message);
1238                 gst_message_unref (message);
1239         }
1240 }
1241
1242 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
1243
1244 void eServiceMP3::gstCBsubtitleAvail(GstElement *element, GstBuffer *buffer, GstPad *pad, gpointer user_data)
1245 {
1246         gint64 duration_ns = GST_BUFFER_DURATION(buffer);
1247         const unsigned char *text = (unsigned char *)GST_BUFFER_DATA(buffer);
1248         eDebug("gstCBsubtitleAvail: %s",text);
1249         eServiceMP3 *_this = (eServiceMP3*)user_data;
1250         if ( _this->m_subtitle_widget )
1251         {
1252                 ePangoSubtitlePage page;
1253                 gRGB rgbcol(0xD0,0xD0,0xD0);
1254                 page.m_elements.push_back(ePangoSubtitlePageElement(rgbcol, (const char*)text));
1255                 page.m_timeout = duration_ns / 1000000;
1256                 (_this->m_subtitle_widget)->setPage(page);
1257         }
1258 }
1259
1260 RESULT eServiceMP3::enableSubtitles(eWidget *parent, ePyObject tuple)
1261 {
1262         ePyObject entry;
1263         int tuplesize = PyTuple_Size(tuple);
1264         int pid;
1265         int type;
1266         gint nb_sources;
1267         GstPad *active_pad;
1268         GstElement *switch_substream = NULL;
1269         GstElement *switch_subparse = gst_bin_get_by_name (GST_BIN(m_gst_pipeline), "switch_subparse");
1270
1271         if (!PyTuple_Check(tuple))
1272                 goto error_out;
1273         if (tuplesize < 1)
1274                 goto error_out;
1275         entry = PyTuple_GET_ITEM(tuple, 1);
1276         if (!PyInt_Check(entry))
1277                 goto error_out;
1278         pid = PyInt_AsLong(entry);
1279         entry = PyTuple_GET_ITEM(tuple, 2);
1280         if (!PyInt_Check(entry))
1281                 goto error_out;
1282         type = PyInt_AsLong(entry);
1283
1284         switch ((subtype_t)type)
1285         {
1286                 case stPlainText:
1287                         switch_substream = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_substream_plain");
1288                         break;
1289                 case stSSA:
1290                         switch_substream = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_substream_ssa");
1291                         break;
1292                 case stSRT:
1293                         switch_substream = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_substream_srt");
1294                         break;
1295                 default:
1296                         goto error_out;
1297         }
1298
1299         m_subtitle_widget = new eSubtitleWidget(parent);
1300         m_subtitle_widget->resize(parent->size()); /* full size */
1301
1302         if ( !switch_substream )
1303         {
1304                 eDebug("can't switch subtitle tracks! gst-plugin-selector needed");
1305                 return -2;
1306         }
1307         g_object_get (G_OBJECT (switch_substream), "n-pads", &nb_sources, NULL);
1308         if ( (unsigned int)pid >= m_subtitleStreams.size() || pid >= nb_sources || (unsigned int)m_currentSubtitleStream >= m_subtitleStreams.size() )
1309                 return -2;
1310         g_object_get (G_OBJECT (switch_subparse), "n-pads", &nb_sources, NULL);
1311         if ( type < 0 || type >= nb_sources )
1312                 return -2;
1313
1314         char sinkpad[6];
1315         sprintf(sinkpad, "sink%d", type);
1316         g_object_set (G_OBJECT (switch_subparse), "active-pad", gst_element_get_pad (switch_subparse, sinkpad), NULL);
1317         sprintf(sinkpad, "sink%d", pid);
1318         g_object_set (G_OBJECT (switch_substream), "active-pad", gst_element_get_pad (switch_substream, sinkpad), NULL);
1319         m_currentSubtitleStream = pid;
1320
1321         return 0;
1322 error_out:
1323         eDebug("enableSubtitles needs a tuple as 2nd argument!\n"
1324                 "for gst subtitles (2, subtitle_stream_count, subtitle_type)");
1325         return -1;
1326 }
1327
1328 RESULT eServiceMP3::disableSubtitles(eWidget *parent)
1329 {
1330         eDebug("eServiceMP3::disableSubtitles");
1331         delete m_subtitle_widget;
1332         m_subtitle_widget = 0;
1333         return 0;
1334 }
1335
1336 PyObject *eServiceMP3::getCachedSubtitle()
1337 {
1338         eDebug("eServiceMP3::getCachedSubtitle");
1339         Py_RETURN_NONE;
1340 }
1341
1342 PyObject *eServiceMP3::getSubtitleList()
1343 {
1344         eDebug("eServiceMP3::getSubtitleList");
1345
1346         ePyObject l = PyList_New(0);
1347         int stream_count[sizeof(subtype_t)];
1348         for ( unsigned int i = 0; i < sizeof(subtype_t); i++ )
1349                 stream_count[i] = 0;
1350
1351         for (std::vector<subtitleStream>::iterator IterSubtitleStream(m_subtitleStreams.begin()); IterSubtitleStream != m_subtitleStreams.end(); ++IterSubtitleStream)
1352         {
1353                 subtype_t type = IterSubtitleStream->type;
1354                 ePyObject tuple = PyTuple_New(5);
1355                 PyTuple_SET_ITEM(tuple, 0, PyInt_FromLong(2));
1356                 PyTuple_SET_ITEM(tuple, 1, PyInt_FromLong(stream_count[type]));
1357                 PyTuple_SET_ITEM(tuple, 2, PyInt_FromLong(int(type)));
1358                 PyTuple_SET_ITEM(tuple, 3, PyInt_FromLong(0));
1359                 PyTuple_SET_ITEM(tuple, 4, PyString_FromString((IterSubtitleStream->language_code).c_str()));
1360                 PyList_Append(l, tuple);
1361                 Py_DECREF(tuple);
1362                 stream_count[type]++;
1363         }
1364         return l;
1365 }
1366
1367 #else
1368 #warning gstreamer not available, not building media player
1369 #endif