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