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 <sys/stat.h>
  16 /* for subtitles */
  17 #include <lib/gui/esubtitle.h>
  18
  19 // eServiceFactoryMP3
  20
  21 eServiceFactoryMP3::eServiceFactoryMP3()
  22 {
  23         ePtr<eServiceCenter> sc;
  24
  25         eServiceCenter::getPrivInstance(sc);
  26         if (sc)
  27         {
  28                 std::list<std::string> extensions;
  29                 extensions.push_back("mp3");
  30                 extensions.push_back("ogg");
  31                 extensions.push_back("mpg");
  32                 extensions.push_back("vob");
  33                 extensions.push_back("wav");
  34                 extensions.push_back("wave");
  35                 extensions.push_back("mkv");
  36                 extensions.push_back("avi");
  37                 extensions.push_back("dat");
  38                 sc->addServiceFactory(eServiceFactoryMP3::id, this, extensions);
  39         }
  40
  41         m_service_info = new eStaticServiceMP3Info();
  42 }
  43
  44 eServiceFactoryMP3::~eServiceFactoryMP3()
  45 {
  46         ePtr<eServiceCenter> sc;
  47
  48         eServiceCenter::getPrivInstance(sc);
  49         if (sc)
  50                 sc->removeServiceFactory(eServiceFactoryMP3::id);
  51 }
  52
  53 DEFINE_REF(eServiceFactoryMP3)
  54
  55         // iServiceHandler
  56 RESULT eServiceFactoryMP3::play(const eServiceReference &ref, ePtr<iPlayableService> &ptr)
  57 {
  58                 // check resources...
  59         ptr = new eServiceMP3(ref.path.c_str());
  60         return 0;
  61 }
  62
  63 RESULT eServiceFactoryMP3::record(const eServiceReference &ref, ePtr<iRecordableService> &ptr)
  64 {
  65         ptr=0;
  66         return -1;
  67 }
  68
  69 RESULT eServiceFactoryMP3::list(const eServiceReference &, ePtr<iListableService> &ptr)
  70 {
  71         ptr=0;
  72         return -1;
  73 }
  74
  75 RESULT eServiceFactoryMP3::info(const eServiceReference &ref, ePtr<iStaticServiceInformation> &ptr)
  76 {
  77         ptr = m_service_info;
  78         return 0;
  79 }
  80
  81 class eMP3ServiceOfflineOperations: public iServiceOfflineOperations
  82 {
  83         DECLARE_REF(eMP3ServiceOfflineOperations);
  84         eServiceReference m_ref;
  85 public:
  86         eMP3ServiceOfflineOperations(const eServiceReference &ref);
  87
  88         RESULT deleteFromDisk(int simulate);
  89         RESULT getListOfFilenames(std::list<std::string> &);
  90 };
  91
  92 DEFINE_REF(eMP3ServiceOfflineOperations);
  93
  94 eMP3ServiceOfflineOperations::eMP3ServiceOfflineOperations(const eServiceReference &ref): m_ref((const eServiceReference&)ref)
  95 {
  96 }
  97
  98 RESULT eMP3ServiceOfflineOperations::deleteFromDisk(int simulate)
  99 {
 100         if (simulate)
 101                 return 0;
 102         else
 103         {
 104                 std::list<std::string> res;
 105                 if (getListOfFilenames(res))
 106                         return -1;
 107
 108                 eBackgroundFileEraser *eraser = eBackgroundFileEraser::getInstance();
 109                 if (!eraser)
 110                         eDebug("FATAL !! can't get background file eraser");
 111
 112                 for (std::list<std::string>::iterator i(res.begin()); i != res.end(); ++i)
 113                 {
 114                         eDebug("Removing %s...", i->c_str());
 115                         if (eraser)
 116                                 eraser->erase(i->c_str());
 117                         else
 118                                 ::unlink(i->c_str());
 119                 }
 120
 121                 return 0;
 122         }
 123 }
 124
 125 RESULT eMP3ServiceOfflineOperations::getListOfFilenames(std::list<std::string> &res)
 126 {
 127         res.clear();
 128         res.push_back(m_ref.path);
 129         return 0;
 130 }
 131
 132
 133 RESULT eServiceFactoryMP3::offlineOperations(const eServiceReference &ref, ePtr<iServiceOfflineOperations> &ptr)
 134 {
 135         ptr = new eMP3ServiceOfflineOperations(ref);
 136         return 0;
 137 }
 138
 139 // eStaticServiceMP3Info
 140
 141
 142 // eStaticServiceMP3Info is seperated from eServiceMP3 to give information
 143 // about unopened files.
 144
 145 // probably eServiceMP3 should use this class as well, and eStaticServiceMP3Info
 146 // should have a database backend where ID3-files etc. are cached.
 147 // this would allow listing the mp3 database based on certain filters.
 148
 149 DEFINE_REF(eStaticServiceMP3Info)
 150
 151 eStaticServiceMP3Info::eStaticServiceMP3Info()
 152 {
 153 }
 154
 155 RESULT eStaticServiceMP3Info::getName(const eServiceReference &ref, std::string &name)
 156 {
 157         size_t last = ref.path.rfind('/');
 158         if (last != std::string::npos)
 159                 name = ref.path.substr(last+1);
 160         else
 161                 name = ref.path;
 162         return 0;
 163 }
 164
 165 int eStaticServiceMP3Info::getLength(const eServiceReference &ref)
 166 {
 167         return -1;
 168 }
 169
 170 // eServiceMP3
 171
 172 eServiceMP3::eServiceMP3(const char *filename): m_filename(filename), m_pump(eApp, 1)
 173 {
 174         m_stream_tags = 0;
 175         m_audioStreams.clear();
 176         m_subtitleStreams.clear();
 177         m_currentAudioStream = 0;
 178         m_currentSubtitleStream = 0;
 179         m_subtitle_widget = 0;
 180         m_currentTrickRatio = 0;
 181         CONNECT(m_seekTimeout.timeout, eServiceMP3::seekTimeoutCB);
 182         CONNECT(m_pump.recv_msg, eServiceMP3::gstPoll);
 183         GstElement *source = 0;
 184
 185         GstElement *decoder = 0, *conv = 0, *flt = 0, *sink = 0; /* for audio */
 186
 187         GstElement *audio = 0, *switch_audio = 0, *queue_audio = 0, *video = 0, *queue_video = 0, *videodemux = 0;
 188
 189         m_state = stIdle;
 190         eDebug("SERVICEMP3 construct!");
 191
 192                 /* FIXME: currently, decodebin isn't possible for
 193                    video streams. in that case, make a manual pipeline. */
 194
 195         const char *ext = strrchr(filename, '.');
 196         if (!ext)
 197                 ext = filename;
 198
 199         int is_mpeg_ps = !(strcasecmp(ext, ".mpeg") && strcasecmp(ext, ".mpg") && strcasecmp(ext, ".vob") && strcasecmp(ext, ".bin") && strcasecmp(ext, ".dat"));
 200         int is_mpeg_ts = !strcasecmp(ext, ".ts");
 201         int is_matroska = !strcasecmp(ext, ".mkv");
 202         int is_avi = !strcasecmp(ext, ".avi");
 203         int is_mp3 = !strcasecmp(ext, ".mp3"); /* force mp3 instead of decodebin */
 204         int is_video = is_mpeg_ps || is_mpeg_ts || is_matroska || is_avi;
 205         int is_streaming = !strncmp(filename, "http://", 7);
 206         int is_AudioCD = !(strncmp(filename, "/autofs/", 8) || strncmp(filename+strlen(filename)-13, "/track-", 7) || strcasecmp(ext, ".wav"));
 207         int is_VCD = !strcasecmp(ext, ".dat");
 208
 209         eDebug("filename: %s, is_mpeg_ps: %d, is_mpeg_ts: %d, is_video: %d, is_streaming: %d, is_mp3: %d, is_matroska: %d, is_avi: %d, is_AudioCD: %d, is_VCD: %d", filename, is_mpeg_ps, is_mpeg_ts, is_video, is_streaming, is_mp3, is_matroska, is_avi, is_AudioCD, is_VCD);
 210
 211         int is_audio = !is_video;
 212
 213         int all_ok = 0;
 214
 215         m_gst_pipeline = gst_pipeline_new ("mediaplayer");
 216         if (!m_gst_pipeline)
 217                 eWarning("failed to create pipeline");
 218
 219         if (is_AudioCD)
 220         {
 221                 source = gst_element_factory_make ("cdiocddasrc", "cda-source");
 222                 if (source)
 223                         g_object_set (G_OBJECT (source), "device", "/dev/cdroms/cdrom0", NULL);
 224                 else
 225                         is_AudioCD = 0;
 226         }
 227         if ( !is_streaming && !is_AudioCD )
 228                 source = gst_element_factory_make ("filesrc", "file-source");
 229         else if ( is_streaming )
 230         {
 231                 source = gst_element_factory_make ("neonhttpsrc", "http-source");
 232                 if (source)
 233                         g_object_set (G_OBJECT (source), "automatic-redirect", TRUE, NULL);
 234         }
 235
 236         if (!source)
 237                 eWarning("failed to create %s", is_streaming ? "neonhttpsrc" : "filesrc");
 238                                 /* configure source */
 239         else if (!is_AudioCD)
 240                 g_object_set (G_OBJECT (source), "location", filename, NULL);
 241         else
 242         {
 243                 int track = atoi(filename+18);
 244                 eDebug("play audio CD track #%i",track);
 245                 if (track > 0)
 246                         g_object_set (G_OBJECT (source), "track", track, NULL);
 247         }
 248
 249         if (is_audio)
 250         {
 251                         /* filesrc -> decodebin -> audioconvert -> capsfilter -> alsasink */
 252                 const char *decodertype = "decodebin";
 253
 254                 decoder = gst_element_factory_make (decodertype, "decoder");
 255                 if (!decoder)
 256                         eWarning("failed to create %s decoder", decodertype);
 257
 258                 conv = gst_element_factory_make ("audioconvert", "converter");
 259                 if (!conv)
 260                         eWarning("failed to create audioconvert");
 261
 262                 flt = gst_element_factory_make ("capsfilter", "flt");
 263                 if (!flt)
 264                         eWarning("failed to create capsfilter");
 265
 266                         /* for some reasons, we need to set the sample format to depth/width=16, because auto negotiation doesn't work. */
 267                         /* endianness, however, is not required to be set anymore. */
 268                 if (flt)
 269                 {
 270                         GstCaps *caps = gst_caps_new_simple("audio/x-raw-int", /* "endianness", G_TYPE_INT, 4321, */ "depth", G_TYPE_INT, 16, "width", G_TYPE_INT, 16, /*"channels", G_TYPE_INT, 2, */(char*)0);
 271                         g_object_set (G_OBJECT (flt), "caps", caps, (char*)0);
 272                         gst_caps_unref(caps);
 273                 }
 274
 275                 sink = gst_element_factory_make ("alsasink", "alsa-output");
 276                 if (!sink)
 277                         eWarning("failed to create osssink");
 278
 279                 if (source && decoder && conv && sink)
 280                         all_ok = 1;
 281         } else /* is_video */
 282         {
 283                         /* filesrc -> mpegdemux -> | queue_audio -> dvbaudiosink
 284                                                    | queue_video -> dvbvideosink */
 285
 286                 audio = gst_element_factory_make("dvbaudiosink", "audiosink");
 287                 queue_audio = gst_element_factory_make("queue", "queue_audio");
 288
 289                 video = gst_element_factory_make("dvbvideosink", "videosink");
 290                 queue_video = gst_element_factory_make("queue", "queue_video");
 291
 292                 if (is_mpeg_ps)
 293                         videodemux = gst_element_factory_make("flupsdemux", "videodemux");
 294                 else if (is_mpeg_ts)
 295                         videodemux = gst_element_factory_make("flutsdemux", "videodemux");
 296                 else if (is_matroska)
 297                         videodemux = gst_element_factory_make("matroskademux", "videodemux");
 298                 else if (is_avi)
 299                         videodemux = gst_element_factory_make("avidemux", "videodemux");
 300
 301                 if (!videodemux)
 302                 {
 303                         eDebug("fluendo mpegdemux not available, falling back to mpegdemux\n");
 304                         videodemux = gst_element_factory_make("mpegdemux", "videodemux");
 305                 }
 306
 307                 eDebug("audio: %p, queue_audio %p, video %p, queue_video %p, videodemux %p", audio, queue_audio, video, queue_video, videodemux);
 308                 if (audio && queue_audio && video && queue_video && videodemux)
 309                 {
 310                         g_object_set (G_OBJECT (queue_audio), "max-size-bytes", 256*1024, NULL);
 311                         g_object_set (G_OBJECT (queue_audio), "max-size-buffers", 0, NULL);
 312                         g_object_set (G_OBJECT (queue_audio), "max-size-time", (guint64)0, NULL);
 313                         g_object_set (G_OBJECT (queue_video), "max-size-buffers", 0, NULL);
 314                         g_object_set (G_OBJECT (queue_video), "max-size-bytes", 2*1024*1024, NULL);
 315                         g_object_set (G_OBJECT (queue_video), "max-size-time", (guint64)0, NULL);
 316                         all_ok = 1;
 317                 }
 318         }
 319
 320         if (m_gst_pipeline && all_ok)
 321         {
 322                 gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
 323
 324                 if (is_AudioCD)
 325                 {
 326                         queue_audio = gst_element_factory_make("queue", "queue_audio");
 327                         g_object_set (G_OBJECT (sink), "preroll-queue-len", 80, NULL);
 328                         gst_bin_add_many (GST_BIN (m_gst_pipeline), source, queue_audio, conv, sink, NULL);
 329                         gst_element_link_many(source, queue_audio, conv, sink, NULL);
 330                 }
 331                 else if (is_audio)
 332                 {
 333                         queue_audio = gst_element_factory_make("queue", "queue_audio");
 334
 335                         g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
 336                         g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
 337
 338                         if (!is_mp3)
 339                                 g_object_set (G_OBJECT (sink), "preroll-queue-len", 80, NULL);
 340
 341                                 /* gst_bin will take the 'floating references' */
 342                         gst_bin_add_many (GST_BIN (m_gst_pipeline),
 343                                                 source, queue_audio, decoder, NULL);
 344
 345                                 /* in decodebin's case we can just connect the source with the decodebin, and decodebin will take care about id3demux (or whatever is required) */
 346                         gst_element_link_many(source, queue_audio, decoder, NULL);
 347
 348                                 /* create audio bin with the audioconverter, the capsfilter and the audiosink */
 349                         audio = gst_bin_new ("audiobin");
 350
 351                         GstPad *audiopad = gst_element_get_static_pad (conv, "sink");
 352                         gst_bin_add_many(GST_BIN(audio), conv, flt, sink, (char*)0);
 353                         gst_element_link_many(conv, flt, sink, (char*)0);
 354                         gst_element_add_pad(audio, gst_ghost_pad_new ("sink", audiopad));
 355                         gst_object_unref(audiopad);
 356                         gst_bin_add (GST_BIN(m_gst_pipeline), audio);
 357                                 /* in mad's case, we can directly connect the decoder to the audiobin. otherwise, we do this in gstCBnewPad */
 358                         if (is_mp3)
 359                                 gst_element_link(decoder, audio);
 360
 361                 } else /* is_video */
 362                 {
 363                         char srt_filename[strlen(filename)+1];
 364                         strncpy(srt_filename,filename,strlen(filename)-3);
 365                         srt_filename[strlen(filename)-3]='\0';
 366                         strcat(srt_filename, "srt");
 367                         struct stat buffer;
 368                         if (stat(srt_filename, &buffer) == 0)
 369                         {
 370                                 eDebug("subtitle file found: %s",srt_filename);
 371                                 GstElement *subsource = gst_element_factory_make ("filesrc", "srt_source");
 372                                 g_object_set (G_OBJECT (subsource), "location", srt_filename, NULL);
 373                                 GstElement *parser = gst_element_factory_make("subparse", "parse_subtitles");
 374                                 GstElement *switch_subtitles = gst_element_factory_make ("input-selector", "switch_subtitles");
 375                                 GstElement *sink = gst_element_factory_make("fakesink", "sink_subtitles");
 376                                 gst_bin_add_many(GST_BIN (m_gst_pipeline), subsource, switch_subtitles, parser, sink, NULL);
 377                                 gst_element_link(subsource, switch_subtitles);
 378                                 gst_element_link(switch_subtitles, parser);
 379                                 gst_element_link(parser, sink);
 380                                 g_object_set (G_OBJECT(switch_subtitles), "select-all", TRUE, NULL);
 381                                 g_object_set (G_OBJECT(sink), "signal-handoffs", TRUE, NULL);
 382                                 g_object_set (G_OBJECT(sink), "sync", TRUE, NULL);
 383                                 g_object_set (G_OBJECT(parser), "subtitle-encoding", "ISO-8859-15", NULL);
 384                                 g_signal_connect(sink, "handoff", G_CALLBACK(gstCBsubtitleAvail), this);
 385                                 subtitleStream subs;
 386                                 subs.language_code = std::string(".srt file");
 387                                 m_subtitleStreams.push_back(subs);
 388                         }
 389                         gst_bin_add_many(GST_BIN(m_gst_pipeline), source, videodemux, audio, queue_audio, video, queue_video, NULL);
 390                         switch_audio = gst_element_factory_make ("input-selector", "switch_audio");
 391                         if (switch_audio)
 392                         {
 393                                 g_object_set (G_OBJECT (switch_audio), "select-all", TRUE, NULL);
 394                                 gst_bin_add(GST_BIN(m_gst_pipeline), switch_audio);
 395                                 gst_element_link(switch_audio, queue_audio);
 396                         }
 397
 398                         if (is_VCD)
 399                         {
 400                                 GstElement *cdxaparse = gst_element_factory_make("cdxaparse", "cdxaparse");
 401                                 gst_bin_add(GST_BIN(m_gst_pipeline), cdxaparse);
 402                                 gst_element_link(source, cdxaparse);
 403                                 gst_element_link(cdxaparse, videodemux);
 404                         }
 405                         else
 406                                 gst_element_link(source, videodemux);
 407                         gst_element_link(queue_audio, audio);
 408                         gst_element_link(queue_video, video);
 409                         g_signal_connect(videodemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 410                 }
 411         } else
 412         {
 413                 if (m_gst_pipeline)
 414                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 415                 if (source)
 416                         gst_object_unref(GST_OBJECT(source));
 417                 if (decoder)
 418                         gst_object_unref(GST_OBJECT(decoder));
 419                 if (conv)
 420                         gst_object_unref(GST_OBJECT(conv));
 421                 if (sink)
 422                         gst_object_unref(GST_OBJECT(sink));
 423
 424                 if (audio)
 425                         gst_object_unref(GST_OBJECT(audio));
 426                 if (queue_audio)
 427                         gst_object_unref(GST_OBJECT(queue_audio));
 428                 if (video)
 429                         gst_object_unref(GST_OBJECT(video));
 430                 if (queue_video)
 431                         gst_object_unref(GST_OBJECT(queue_video));
 432                 if (videodemux)
 433                         gst_object_unref(GST_OBJECT(videodemux));
 434                 if (switch_audio)
 435                         gst_object_unref(GST_OBJECT(switch_audio));
 436
 437                 eDebug("sorry, can't play.");
 438                 m_gst_pipeline = 0;
 439         }
 440
 441         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 442 }
 443
 444 eServiceMP3::~eServiceMP3()
 445 {
 446         delete m_subtitle_widget;
 447         if (m_state == stRunning)
 448                 stop();
 449
 450         if (m_stream_tags)
 451                 gst_tag_list_free(m_stream_tags);
 452
 453         if (m_gst_pipeline)
 454         {
 455                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 456                 eDebug("SERVICEMP3 destruct!");
 457         }
 458 }
 459
 460 DEFINE_REF(eServiceMP3);
 461
 462 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 463 {
 464         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 465         return 0;
 466 }
 467
 468 RESULT eServiceMP3::start()
 469 {
 470         assert(m_state == stIdle);
 471
 472         m_state = stRunning;
 473         if (m_gst_pipeline)
 474         {
 475                 eDebug("starting pipeline");
 476                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 477         }
 478         m_event(this, evStart);
 479         return 0;
 480 }
 481
 482 RESULT eServiceMP3::stop()
 483 {
 484         assert(m_state != stIdle);
 485         if (m_state == stStopped)
 486                 return -1;
 487         eDebug("MP3: %s stop\n", m_filename.c_str());
 488         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 489         m_state = stStopped;
 490         return 0;
 491 }
 492
 493 RESULT eServiceMP3::setTarget(int target)
 494 {
 495         return -1;
 496 }
 497
 498 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 499 {
 500         ptr=this;
 501         return 0;
 502 }
 503
 504 RESULT eServiceMP3::setSlowMotion(int ratio)
 505 {
 506         /* we can't do slomo yet */
 507         return -1;
 508 }
 509
 510 RESULT eServiceMP3::setFastForward(int ratio)
 511 {
 512         m_currentTrickRatio = ratio;
 513         if (ratio)
 514                 m_seekTimeout.start(1000, 0);
 515         else
 516                 m_seekTimeout.stop();
 517         return 0;
 518 }
 519
 520 void eServiceMP3::seekTimeoutCB()
 521 {
 522         pts_t ppos, len;
 523         getPlayPosition(ppos);
 524         getLength(len);
 525         ppos += 90000*m_currentTrickRatio;
 526
 527         if (ppos < 0)
 528         {
 529                 ppos = 0;
 530                 m_seekTimeout.stop();
 531         }
 532         if (ppos > len)
 533         {
 534                 ppos = 0;
 535                 stop();
 536                 m_seekTimeout.stop();
 537                 return;
 538         }
 539         seekTo(ppos);
 540 }
 541
 542                 // iPausableService
 543 RESULT eServiceMP3::pause()
 544 {
 545         if (!m_gst_pipeline)
 546                 return -1;
 547         GstStateChangeReturn res = gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 548         if (res == GST_STATE_CHANGE_ASYNC)
 549         {
 550                 pts_t ppos;
 551                 getPlayPosition(ppos);
 552                 seekTo(ppos);
 553         }
 554         return 0;
 555 }
 556
 557 RESULT eServiceMP3::unpause()
 558 {
 559         if (!m_gst_pipeline)
 560                 return -1;
 561
 562         GstStateChangeReturn res;
 563         res = gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 564         return 0;
 565 }
 566
 567         /* iSeekableService */
 568 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 569 {
 570         ptr = this;
 571         return 0;
 572 }
 573
 574 RESULT eServiceMP3::getLength(pts_t &pts)
 575 {
 576         if (!m_gst_pipeline)
 577                 return -1;
 578         if (m_state != stRunning)
 579                 return -1;
 580
 581         GstFormat fmt = GST_FORMAT_TIME;
 582         gint64 len;
 583
 584         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 585                 return -1;
 586
 587                 /* len is in nanoseconds. we have 90 000 pts per second. */
 588
 589         pts = len / 11111;
 590         return 0;
 591 }
 592
 593 RESULT eServiceMP3::seekTo(pts_t to)
 594 {
 595         if (!m_gst_pipeline)
 596                 return -1;
 597
 598                 /* convert pts to nanoseconds */
 599         gint64 time_nanoseconds = to * 11111LL;
 600         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 601                 GST_SEEK_TYPE_SET, time_nanoseconds,
 602                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 603         {
 604                 eDebug("SEEK failed");
 605                 return -1;
 606         }
 607         return 0;
 608 }
 609
 610 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 611 {
 612         if (!m_gst_pipeline)
 613                 return -1;
 614
 615         pts_t ppos;
 616         getPlayPosition(ppos);
 617         ppos += to * direction;
 618         if (ppos < 0)
 619                 ppos = 0;
 620         seekTo(ppos);
 621
 622         return 0;
 623 }
 624
 625 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 626 {
 627         if (!m_gst_pipeline)
 628                 return -1;
 629         if (m_state != stRunning)
 630                 return -1;
 631
 632         GstFormat fmt = GST_FORMAT_TIME;
 633         gint64 len;
 634
 635         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 636                 return -1;
 637
 638                 /* len is in nanoseconds. we have 90 000 pts per second. */
 639         pts = len / 11111;
 640         return 0;
 641 }
 642
 643 RESULT eServiceMP3::setTrickmode(int trick)
 644 {
 645                 /* trickmode is not yet supported by our dvbmediasinks. */
 646         return -1;
 647 }
 648
 649 RESULT eServiceMP3::isCurrentlySeekable()
 650 {
 651         return 1;
 652 }
 653
 654 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 655 {
 656         i = this;
 657         return 0;
 658 }
 659
 660 RESULT eServiceMP3::getName(std::string &name)
 661 {
 662         name = m_filename;
 663         size_t n = name.rfind('/');
 664         if (n != std::string::npos)
 665                 name = name.substr(n + 1);
 666         return 0;
 667 }
 668
 669 int eServiceMP3::getInfo(int w)
 670 {
 671         gchar *tag = 0;
 672
 673         switch (w)
 674         {
 675         case sTitle:
 676         case sArtist:
 677         case sAlbum:
 678         case sComment:
 679         case sTracknumber:
 680         case sGenre:
 681         case sVideoType:
 682                 return resIsString;
 683         case sCurrentTitle:
 684                 tag = GST_TAG_TRACK_NUMBER;
 685                 break;
 686         case sTotalTitles:
 687                 tag = GST_TAG_TRACK_COUNT;
 688                 break;
 689         default:
 690                 return resNA;
 691         }
 692
 693         if (!m_stream_tags || !tag)
 694                 return 0;
 695
 696         guint value;
 697         if (gst_tag_list_get_uint(m_stream_tags, tag, &value))
 698                 return (int) value;
 699
 700         return 0;
 701
 702 }
 703
 704 std::string eServiceMP3::getInfoString(int w)
 705 {
 706         gchar *tag = 0;
 707         switch (w)
 708         {
 709         case sTitle:
 710                 tag = GST_TAG_TITLE;
 711                 break;
 712         case sArtist:
 713                 tag = GST_TAG_ARTIST;
 714                 break;
 715         case sAlbum:
 716                 tag = GST_TAG_ALBUM;
 717                 break;
 718         case sComment:
 719                 tag = GST_TAG_COMMENT;
 720                 break;
 721         case sTracknumber:
 722                 tag = GST_TAG_TRACK_NUMBER;
 723                 break;
 724         case sGenre:
 725                 tag = GST_TAG_GENRE;
 726                 break;
 727         case sVideoType:
 728                 tag = GST_TAG_VIDEO_CODEC;
 729                 break;
 730         default:
 731                 return "";
 732         }
 733
 734         if (!m_stream_tags || !tag)
 735                 return "";
 736
 737         gchar *value;
 738
 739         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 740         {
 741                 std::string res = value;
 742                 g_free(value);
 743                 return res;
 744         }
 745
 746         return "";
 747 }
 748
 749 RESULT eServiceMP3::audioChannel(ePtr<iAudioChannelSelection> &ptr)
 750 {
 751         ptr = this;
 752         return 0;
 753 }
 754
 755 RESULT eServiceMP3::audioTracks(ePtr<iAudioTrackSelection> &ptr)
 756 {
 757         ptr = this;
 758         return 0;
 759 }
 760
 761 RESULT eServiceMP3::subtitle(ePtr<iSubtitleOutput> &ptr)
 762 {
 763         ptr = this;
 764         return 0;
 765 }
 766
 767 int eServiceMP3::getNumberOfTracks()
 768 {
 769         return m_audioStreams.size();
 770 }
 771
 772 int eServiceMP3::getCurrentTrack()
 773 {
 774         return m_currentAudioStream;
 775 }
 776
 777 RESULT eServiceMP3::selectTrack(unsigned int i)
 778 {
 779         int ret = selectAudioStream(i);
 780         /* flush */
 781         pts_t ppos;
 782         getPlayPosition(ppos);
 783         seekTo(ppos);
 784
 785         return ret;
 786 }
 787
 788 int eServiceMP3::selectAudioStream(int i)
 789 {
 790         gint nb_sources;
 791         GstPad *active_pad;
 792         GstElement *switch_audio = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_audio");
 793         if ( !switch_audio )
 794         {
 795                 eDebug("can't switch audio tracks! gst-plugin-selector needed");
 796                 return -1;
 797         }
 798         g_object_get (G_OBJECT (switch_audio), "n-pads", &nb_sources, NULL);
 799         if ( (unsigned int)i >= m_audioStreams.size() || i >= nb_sources || (unsigned int)m_currentAudioStream >= m_audioStreams.size() )
 800                 return -2;
 801         char sinkpad[8];
 802         sprintf(sinkpad, "sink%d", i);
 803         g_object_set (G_OBJECT (switch_audio), "active-pad", gst_element_get_pad (switch_audio, sinkpad), NULL);
 804         g_object_get (G_OBJECT (switch_audio), "active-pad", &active_pad, NULL);
 805         gchar *name;
 806         name = gst_pad_get_name (active_pad);
 807         eDebug ("switched audio to (%s)", name);
 808         g_free(name);
 809         m_currentAudioStream = i;
 810         return 0;
 811 }
 812
 813 int eServiceMP3::getCurrentChannel()
 814 {
 815         return STEREO;
 816 }
 817
 818 RESULT eServiceMP3::selectChannel(int i)
 819 {
 820         eDebug("eServiceMP3::selectChannel(%i)",i);
 821         return 0;
 822 }
 823
 824 RESULT eServiceMP3::getTrackInfo(struct iAudioTrackInfo &info, unsigned int i)
 825 {
 826 //      eDebug("eServiceMP3::getTrackInfo(&info, %i)",i);
 827         if (i >= m_audioStreams.size())
 828                 return -2;
 829         if (m_audioStreams[i].type == atMPEG)
 830                 info.m_description = "MPEG";
 831         else if (m_audioStreams[i].type == atMP3)
 832                 info.m_description = "MP3";
 833         else if (m_audioStreams[i].type == atAC3)
 834                 info.m_description = "AC3";
 835         else if (m_audioStreams[i].type == atAAC)
 836                 info.m_description = "AAC";
 837         else if (m_audioStreams[i].type == atDTS)
 838                 info.m_description = "DTS";
 839         else if (m_audioStreams[i].type == atPCM)
 840                 info.m_description = "PCM";
 841         else if (m_audioStreams[i].type == atOGG)
 842                 info.m_description = "OGG";
 843         else
 844                 info.m_description = "???";
 845         if (info.m_language.empty())
 846                 info.m_language = m_audioStreams[i].language_code;
 847         return 0;
 848 }
 849
 850 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 851 {
 852         if (!msg)
 853                 return;
 854         gchar *sourceName;
 855         GstObject *source;
 856
 857         source = GST_MESSAGE_SRC(msg);
 858         sourceName = gst_object_get_name(source);
 859 #if 0
 860         if (gst_message_get_structure(msg))
 861         {
 862                 gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 863                 eDebug("gst_message from %s: %s", sourceName, string);
 864                 g_free(string);
 865         }
 866         else
 867                 eDebug("gst_message from %s: %s (without structure)", sourceName, GST_MESSAGE_TYPE_NAME(msg));
 868 #endif
 869         switch (GST_MESSAGE_TYPE (msg))
 870         {
 871         case GST_MESSAGE_EOS:
 872                 m_event((iPlayableService*)this, evEOF);
 873                 break;
 874         case GST_MESSAGE_ERROR:
 875         {
 876                 gchar *debug;
 877                 GError *err;
 878
 879                 gst_message_parse_error (msg, &err, &debug);
 880                 g_free (debug);
 881                 eWarning("Gstreamer error: %s (%i)", err->message, err->code );
 882                 if ( err->domain == GST_STREAM_ERROR && err->code == GST_STREAM_ERROR_DECODE )
 883                 {
 884                         if ( g_strrstr(sourceName, "videosink") )
 885                                 m_event((iPlayableService*)this, evUser+11);
 886                 }
 887                 g_error_free(err);
 888                         /* TODO: signal error condition to user */
 889                 break;
 890         }
 891         case GST_MESSAGE_TAG:
 892         {
 893                 GstTagList *tags, *result;
 894                 gst_message_parse_tag(msg, &tags);
 895
 896                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 897                 if (result)
 898                 {
 899                         if (m_stream_tags)
 900                                 gst_tag_list_free(m_stream_tags);
 901                         m_stream_tags = result;
 902                 }
 903
 904                 gchar *g_audiocodec;
 905                 if ( gst_tag_list_get_string(tags, GST_TAG_AUDIO_CODEC, &g_audiocodec) && m_audioStreams.size() == 0 )
 906                 {
 907                         GstPad* pad = gst_element_get_pad (GST_ELEMENT(source), "src");
 908                         GstCaps* caps = gst_pad_get_caps(pad);
 909                         GstStructure* str = gst_caps_get_structure(caps, 0);
 910                         if ( !str )
 911                                 break;
 912                         audioStream audio;
 913                         audio.type = gstCheckAudioPad(str);
 914                         m_audioStreams.push_back(audio);
 915                 }
 916                 break;
 917         }
 918         case GST_MESSAGE_ASYNC_DONE:
 919         {
 920                 GstTagList *tags;
 921                 for (std::vector<audioStream>::iterator IterAudioStream(m_audioStreams.begin()); IterAudioStream != m_audioStreams.end(); ++IterAudioStream)
 922                 {
 923                         if ( IterAudioStream->pad )
 924                         {
 925                                 g_object_get(IterAudioStream->pad, "tags", &tags, NULL);
 926                                 gchar *g_language;
 927                                 if ( gst_is_tag_list(tags) && gst_tag_list_get_string(tags, GST_TAG_LANGUAGE_CODE, &g_language) )
 928                                 {
 929                                         eDebug("found audio language %s",g_language);
 930                                         IterAudioStream->language_code = std::string(g_language);
 931                                         g_free (g_language);
 932                                 }
 933                         }
 934                 }
 935                 for (std::vector<subtitleStream>::iterator IterSubtitleStream(m_subtitleStreams.begin()); IterSubtitleStream != m_subtitleStreams.end(); ++IterSubtitleStream)
 936                 {
 937                         if ( IterSubtitleStream->pad )
 938                         {
 939                                 g_object_get(IterSubtitleStream->pad, "tags", &tags, NULL);
 940                                 gchar *g_language;
 941                                 if ( gst_is_tag_list(tags) && gst_tag_list_get_string(tags, GST_TAG_LANGUAGE_CODE, &g_language) )
 942                                 {
 943                                         eDebug("found subtitle language %s",g_language);
 944                                         IterSubtitleStream->language_code = std::string(g_language);
 945                                         g_free (g_language);
 946                                 }
 947                         }
 948                 }
 949         }
 950         default:
 951                 break;
 952         }
 953         g_free (sourceName);
 954 }
 955
 956 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
 957 {
 958         eServiceMP3 *_this = (eServiceMP3*)user_data;
 959         _this->m_pump.send(1);
 960                 /* wake */
 961         return GST_BUS_PASS;
 962 }
 963
 964 audiotype_t eServiceMP3::gstCheckAudioPad(GstStructure* structure)
 965 {
 966         const gchar* type;
 967         type = gst_structure_get_name(structure);
 968
 969         if (!strcmp(type, "audio/mpeg")) {
 970                         gint mpegversion, layer = 0;
 971                         gst_structure_get_int (structure, "mpegversion", &mpegversion);
 972                         gst_structure_get_int (structure, "layer", &layer);
 973                         eDebug("mime audio/mpeg version %d layer %d", mpegversion, layer);
 974                         switch (mpegversion) {
 975                                 case 1:
 976                                 {
 977                                         if ( layer == 3 )
 978                                                 return atMP3;
 979                                         else
 980                                                 return atMPEG;
 981                                 }
 982                                 case 2:
 983                                         return atMPEG;
 984                                 case 4:
 985                                         return atAAC;
 986                                 default:
 987                                         return atUnknown;
 988                         }
 989                 }
 990         else
 991         {
 992                 eDebug("mime %s", type);
 993                 if (!strcmp(type, "audio/x-ac3") || !strcmp(type, "audio/ac3"))
 994                         return atAC3;
 995                 else if (!strcmp(type, "audio/x-dts") || !strcmp(type, "audio/dts"))
 996                         return atDTS;
 997                 else if (!strcmp(type, "audio/x-raw-int"))
 998                         return atPCM;
 999         }
1000         return atUnknown;
1001 }
1002
1003 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
1004 {
1005         const gchar* type;
1006         GstCaps* caps;
1007         GstStructure* str;
1008         caps = gst_pad_get_caps(pad);
1009         str = gst_caps_get_structure(caps, 0);
1010         type = gst_structure_get_name(str);
1011
1012         eDebug("A new pad %s:%s was created", GST_OBJECT_NAME (decodebin), GST_OBJECT_NAME (pad));
1013
1014         eServiceMP3 *_this = (eServiceMP3*)user_data;
1015         GstBin *pipeline = GST_BIN(_this->m_gst_pipeline);
1016         if (g_strrstr(type,"audio"))
1017         {
1018                 audioStream audio;
1019                 audio.type = _this->gstCheckAudioPad(str);
1020                 GstElement *switch_audio = gst_bin_get_by_name(pipeline , "switch_audio");
1021                 if ( switch_audio )
1022                 {
1023                         GstPad *sinkpad = gst_element_get_request_pad (switch_audio, "sink%d");
1024                         gst_pad_link(pad, sinkpad);
1025                         audio.pad = sinkpad;
1026                         _this->m_audioStreams.push_back(audio);
1027
1028                         if ( _this->m_audioStreams.size() == 1 )
1029                         {
1030                                 _this->selectAudioStream(0);
1031                                 gst_element_set_state (_this->m_gst_pipeline, GST_STATE_PLAYING);
1032                         }
1033                         else
1034                                 g_object_set (G_OBJECT (switch_audio), "select-all", FALSE, NULL);
1035                 }
1036                 else
1037                 {
1038                         gst_pad_link(pad, gst_element_get_static_pad(gst_bin_get_by_name(pipeline,"queue_audio"), "sink"));
1039                         _this->m_audioStreams.push_back(audio);
1040                 }
1041         }
1042         if (g_strrstr(type,"video"))
1043         {
1044                 gst_pad_link(pad, gst_element_get_static_pad(gst_bin_get_by_name(pipeline,"queue_video"), "sink"));
1045         }
1046         if (g_strrstr(type,"application/x-ssa") || g_strrstr(type,"application/x-ass"))
1047         {
1048                 GstElement *switch_subtitles = gst_bin_get_by_name(pipeline,"switch_subtitles");
1049                 if ( !switch_subtitles )
1050                 {
1051                         switch_subtitles = gst_element_factory_make ("input-selector", "switch_subtitles");
1052                         if ( !switch_subtitles )
1053                                 return;
1054                         GstElement *parser = gst_element_factory_make("ssaparse", "parse_subtitles");
1055                         GstElement *sink = gst_element_factory_make("fakesink", "sink_subtitles");
1056                         gst_bin_add_many(pipeline, switch_subtitles, parser, sink, NULL);
1057                         gst_element_link(switch_subtitles, parser);
1058                         gst_element_link(parser, sink);
1059                         g_object_set (G_OBJECT(sink), "signal-handoffs", TRUE, NULL);
1060                         g_signal_connect(sink, "handoff", G_CALLBACK(gstCBsubtitleAvail), _this);
1061                 }
1062                 GstPad *sinkpad = gst_element_get_request_pad (switch_subtitles, "sink%d");
1063                 gst_pad_link(pad, sinkpad);
1064                 subtitleStream subs;
1065                 subs.pad = sinkpad;
1066                 _this->m_subtitleStreams.push_back(subs);
1067         }
1068 }
1069
1070 void eServiceMP3::gstCBfilterPadAdded(GstElement *filter, GstPad *pad, gpointer user_data)
1071 {
1072         eServiceMP3 *_this = (eServiceMP3*)user_data;
1073         GstElement *decoder = gst_bin_get_by_name(GST_BIN(_this->m_gst_pipeline),"decoder");
1074         gst_pad_link(pad, gst_element_get_static_pad (decoder, "sink"));
1075 }
1076
1077 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
1078 {
1079         eServiceMP3 *_this = (eServiceMP3*)user_data;
1080         GstCaps *caps;
1081         GstStructure *str;
1082         GstPad *audiopad;
1083
1084         /* only link once */
1085         GstElement *audiobin = gst_bin_get_by_name(GST_BIN(_this->m_gst_pipeline),"audiobin");
1086         audiopad = gst_element_get_static_pad (audiobin, "sink");
1087         if ( !audiopad || GST_PAD_IS_LINKED (audiopad)) {
1088                 eDebug("audio already linked!");
1089                 g_object_unref (audiopad);
1090                 return;
1091         }
1092
1093         /* check media type */
1094         caps = gst_pad_get_caps (pad);
1095         str = gst_caps_get_structure (caps, 0);
1096         eDebug("gst new pad! %s", gst_structure_get_name (str));
1097
1098         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
1099                 gst_caps_unref (caps);
1100                 gst_object_unref (audiopad);
1101                 return;
1102         }
1103
1104         gst_caps_unref (caps);
1105         gst_pad_link (pad, audiopad);
1106 }
1107
1108 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
1109 {
1110         GstStructure *str;
1111
1112         /* check media type */
1113         caps = gst_pad_get_caps (pad);
1114         str = gst_caps_get_structure (caps, 0);
1115         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
1116         gst_caps_unref (caps);
1117 }
1118
1119 void eServiceMP3::gstPoll(const int&)
1120 {
1121                 /* ok, we have a serious problem here. gstBusSyncHandler sends
1122                    us the wakup signal, but likely before it was posted.
1123                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
1124
1125                    I need to understand the API a bit more to make this work
1126                    proplerly. */
1127         usleep(1);
1128
1129         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
1130         GstMessage *message;
1131         while ((message = gst_bus_pop (bus)))
1132         {
1133                 gstBusCall(bus, message);
1134                 gst_message_unref (message);
1135         }
1136 }
1137
1138 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
1139
1140 void eServiceMP3::gstCBsubtitleAvail(GstElement *element, GstBuffer *buffer, GstPad *pad, gpointer user_data)
1141 {
1142         const unsigned char *text = (unsigned char *)GST_BUFFER_DATA(buffer);
1143         eDebug("gstCBsubtitleAvail: %s",text);
1144         eServiceMP3 *_this = (eServiceMP3*)user_data;
1145         if ( _this->m_subtitle_widget )
1146         {
1147                 eDVBTeletextSubtitlePage page;
1148                 gRGB rgbcol(0xD0,0xD0,0xD0);
1149                 page.m_elements.push_back(eDVBTeletextSubtitlePageElement(rgbcol, (const char*)text));
1150                 (_this->m_subtitle_widget)->setPage(page);
1151         }
1152 }
1153
1154 RESULT eServiceMP3::enableSubtitles(eWidget *parent, ePyObject tuple)
1155 {
1156         eDebug("eServiceMP3::enableSubtitles");
1157
1158         ePyObject entry;
1159         int tuplesize = PyTuple_Size(tuple);
1160         int pid;
1161         gint nb_sources;
1162         GstPad *active_pad;
1163         GstElement *switch_subtitles = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_subtitles");
1164
1165         if (!PyTuple_Check(tuple))
1166                 goto error_out;
1167         if (tuplesize < 1)
1168                 goto error_out;
1169         entry = PyTuple_GET_ITEM(tuple, 1);
1170         if (!PyInt_Check(entry))
1171                 goto error_out;
1172         pid = PyInt_AsLong(entry);
1173
1174         m_subtitle_widget = new eSubtitleWidget(parent);
1175         m_subtitle_widget->resize(parent->size()); /* full size */
1176
1177         if ( !switch_subtitles )
1178         {
1179                 eDebug("can't switch subtitle tracks! gst-plugin-selector needed");
1180                 return -2;
1181         }
1182         g_object_get (G_OBJECT (switch_subtitles), "n-pads", &nb_sources, NULL);
1183         if ( (unsigned int)pid >= m_subtitleStreams.size() || pid >= nb_sources || (unsigned int)m_currentSubtitleStream >= m_subtitleStreams.size() )
1184                 return -2;
1185         char sinkpad[8];
1186         sprintf(sinkpad, "sink%d", pid);
1187         g_object_set (G_OBJECT (switch_subtitles), "active-pad", gst_element_get_pad (switch_subtitles, sinkpad), NULL);
1188         g_object_get (G_OBJECT (switch_subtitles), "active-pad", &active_pad, NULL);
1189         gchar *name;
1190         name = gst_pad_get_name (active_pad);
1191         eDebug ("switched subtitles to (%s)", name);
1192         g_free(name);
1193         m_currentSubtitleStream = pid;
1194
1195         return 0;
1196 error_out:
1197         eDebug("enableSubtitles needs a tuple as 2nd argument!\n"
1198                 "for gst subtitles (2, subtitle_stream_count)");
1199         return -1;
1200 }
1201
1202 RESULT eServiceMP3::disableSubtitles(eWidget *parent)
1203 {
1204         eDebug("eServiceMP3::disableSubtitles");
1205         delete m_subtitle_widget;
1206         m_subtitle_widget = 0;
1207         return 0;
1208 }
1209
1210 PyObject *eServiceMP3::getCachedSubtitle()
1211 {
1212         eDebug("eServiceMP3::getCachedSubtitle");
1213         Py_RETURN_NONE;
1214 }
1215
1216 PyObject *eServiceMP3::getSubtitleList()
1217 {
1218         eDebug("eServiceMP3::getSubtitleList");
1219
1220         ePyObject l = PyList_New(0);
1221         int stream_count = 0;
1222
1223         for (std::vector<subtitleStream>::iterator IterSubtitleStream(m_subtitleStreams.begin()); IterSubtitleStream != m_subtitleStreams.end(); ++IterSubtitleStream)
1224         {
1225                 ePyObject tuple = PyTuple_New(5);
1226                 PyTuple_SET_ITEM(tuple, 0, PyInt_FromLong(2));
1227                 PyTuple_SET_ITEM(tuple, 1, PyInt_FromLong(stream_count));
1228                 PyTuple_SET_ITEM(tuple, 2, PyInt_FromLong(0));
1229                 PyTuple_SET_ITEM(tuple, 3, PyInt_FromLong(0));
1230                 PyTuple_SET_ITEM(tuple, 4, PyString_FromString((IterSubtitleStream->language_code).c_str()));
1231                 PyList_Append(l, tuple);
1232                 Py_DECREF(tuple);
1233                 stream_count++;
1234         }
1235
1236         return l;
1237 }
1238
1239 #else
1240 #warning gstreamer not available, not building media player
1241 #endif