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