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 = gst_element_factory_make ("filesrc", "srt_source");
 370                                 g_object_set (G_OBJECT (subsource), "location", srt_filename, NULL);
 371                                 GstElement *parser = gst_element_factory_make("subparse", "parse_subtitles");
 372                                 GstElement *switch_subtitles = gst_element_factory_make ("input-selector", "switch_subtitles");
 373                                 GstElement *sink = gst_element_factory_make("fakesink", "sink_subtitles");
 374                                 gst_bin_add_many(GST_BIN (m_gst_pipeline), subsource, switch_subtitles, parser, sink, NULL);
 375                                 gst_element_link(subsource, switch_subtitles);
 376                                 gst_element_link(switch_subtitles, parser);
 377                                 gst_element_link(parser, sink);
 378                                 g_object_set (G_OBJECT(switch_subtitles), "select-all", TRUE, NULL);
 379                                 g_object_set (G_OBJECT(sink), "signal-handoffs", TRUE, NULL);
 380                                 g_object_set (G_OBJECT(sink), "sync", TRUE, NULL);
 381                                 g_object_set (G_OBJECT(parser), "subtitle-encoding", "ISO-8859-15", NULL);
 382                                 g_signal_connect(sink, "handoff", G_CALLBACK(gstCBsubtitleAvail), this);
 383                                 subtitleStream subs;
 384                                 subs.language_code = std::string(".srt file");
 385                                 m_subtitleStreams.push_back(subs);
 386                         }
 387                         gst_bin_add_many(GST_BIN(m_gst_pipeline), source, videodemux, audio, queue_audio, video, queue_video, NULL);
 388                         switch_audio = gst_element_factory_make ("input-selector", "switch_audio");
 389                         if (switch_audio)
 390                         {
 391                                 g_object_set (G_OBJECT (switch_audio), "select-all", TRUE, NULL);
 392                                 gst_bin_add(GST_BIN(m_gst_pipeline), switch_audio);
 393                                 gst_element_link(switch_audio, queue_audio);
 394                         }
 395                         gst_element_link(source, videodemux);
 396                         gst_element_link(queue_audio, audio);
 397                         gst_element_link(queue_video, video);
 398                         g_signal_connect(videodemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 399                 }
 400         } else
 401         {
 402                 if (m_gst_pipeline)
 403                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 404                 if (source)
 405                         gst_object_unref(GST_OBJECT(source));
 406                 if (decoder)
 407                         gst_object_unref(GST_OBJECT(decoder));
 408                 if (conv)
 409                         gst_object_unref(GST_OBJECT(conv));
 410                 if (sink)
 411                         gst_object_unref(GST_OBJECT(sink));
 412
 413                 if (audio)
 414                         gst_object_unref(GST_OBJECT(audio));
 415                 if (queue_audio)
 416                         gst_object_unref(GST_OBJECT(queue_audio));
 417                 if (video)
 418                         gst_object_unref(GST_OBJECT(video));
 419                 if (queue_video)
 420                         gst_object_unref(GST_OBJECT(queue_video));
 421                 if (videodemux)
 422                         gst_object_unref(GST_OBJECT(videodemux));
 423                 if (switch_audio)
 424                         gst_object_unref(GST_OBJECT(switch_audio));
 425
 426                 eDebug("sorry, can't play.");
 427                 m_gst_pipeline = 0;
 428         }
 429
 430         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 431 }
 432
 433 eServiceMP3::~eServiceMP3()
 434 {
 435         delete m_subtitle_widget;
 436         if (m_state == stRunning)
 437                 stop();
 438
 439         if (m_stream_tags)
 440                 gst_tag_list_free(m_stream_tags);
 441
 442         if (m_gst_pipeline)
 443         {
 444                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 445                 eDebug("SERVICEMP3 destruct!");
 446         }
 447 }
 448
 449 DEFINE_REF(eServiceMP3);
 450
 451 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 452 {
 453         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 454         return 0;
 455 }
 456
 457 RESULT eServiceMP3::start()
 458 {
 459         assert(m_state == stIdle);
 460
 461         m_state = stRunning;
 462         if (m_gst_pipeline)
 463         {
 464                 eDebug("starting pipeline");
 465                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 466         }
 467         m_event(this, evStart);
 468         return 0;
 469 }
 470
 471 RESULT eServiceMP3::stop()
 472 {
 473         assert(m_state != stIdle);
 474         if (m_state == stStopped)
 475                 return -1;
 476         eDebug("MP3: %s stop\n", m_filename.c_str());
 477         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 478         m_state = stStopped;
 479         return 0;
 480 }
 481
 482 RESULT eServiceMP3::setTarget(int target)
 483 {
 484         return -1;
 485 }
 486
 487 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 488 {
 489         ptr=this;
 490         return 0;
 491 }
 492
 493 RESULT eServiceMP3::setSlowMotion(int ratio)
 494 {
 495         /* we can't do slomo yet */
 496         return -1;
 497 }
 498
 499 RESULT eServiceMP3::setFastForward(int ratio)
 500 {
 501         m_currentTrickRatio = ratio;
 502         if (ratio)
 503                 m_seekTimeout.start(1000, 0);
 504         else
 505                 m_seekTimeout.stop();
 506         return 0;
 507 }
 508
 509 void eServiceMP3::seekTimeoutCB()
 510 {
 511         pts_t ppos, len;
 512         getPlayPosition(ppos);
 513         getLength(len);
 514         ppos += 90000*m_currentTrickRatio;
 515
 516         if (ppos < 0)
 517         {
 518                 ppos = 0;
 519                 m_seekTimeout.stop();
 520         }
 521         if (ppos > len)
 522         {
 523                 ppos = 0;
 524                 stop();
 525                 m_seekTimeout.stop();
 526                 return;
 527         }
 528         seekTo(ppos);
 529 }
 530
 531                 // iPausableService
 532 RESULT eServiceMP3::pause()
 533 {
 534         if (!m_gst_pipeline)
 535                 return -1;
 536         GstStateChangeReturn res = gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 537         if (res == GST_STATE_CHANGE_ASYNC)
 538         {
 539                 pts_t ppos;
 540                 getPlayPosition(ppos);
 541                 seekTo(ppos);
 542         }
 543         return 0;
 544 }
 545
 546 RESULT eServiceMP3::unpause()
 547 {
 548         if (!m_gst_pipeline)
 549                 return -1;
 550
 551         GstStateChangeReturn res;
 552         res = gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 553         return 0;
 554 }
 555
 556         /* iSeekableService */
 557 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 558 {
 559         ptr = this;
 560         return 0;
 561 }
 562
 563 RESULT eServiceMP3::getLength(pts_t &pts)
 564 {
 565         if (!m_gst_pipeline)
 566                 return -1;
 567         if (m_state != stRunning)
 568                 return -1;
 569
 570         GstFormat fmt = GST_FORMAT_TIME;
 571         gint64 len;
 572
 573         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 574                 return -1;
 575
 576                 /* len is in nanoseconds. we have 90 000 pts per second. */
 577
 578         pts = len / 11111;
 579         return 0;
 580 }
 581
 582 RESULT eServiceMP3::seekTo(pts_t to)
 583 {
 584         if (!m_gst_pipeline)
 585                 return -1;
 586
 587                 /* convert pts to nanoseconds */
 588         gint64 time_nanoseconds = to * 11111LL;
 589         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 590                 GST_SEEK_TYPE_SET, time_nanoseconds,
 591                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 592         {
 593                 eDebug("SEEK failed");
 594                 return -1;
 595         }
 596         return 0;
 597 }
 598
 599 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 600 {
 601         if (!m_gst_pipeline)
 602                 return -1;
 603
 604         pts_t ppos;
 605         getPlayPosition(ppos);
 606         ppos += to * direction;
 607         if (ppos < 0)
 608                 ppos = 0;
 609         seekTo(ppos);
 610
 611         return 0;
 612 }
 613
 614 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 615 {
 616         if (!m_gst_pipeline)
 617                 return -1;
 618         if (m_state != stRunning)
 619                 return -1;
 620
 621         GstFormat fmt = GST_FORMAT_TIME;
 622         gint64 len;
 623
 624         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 625                 return -1;
 626
 627                 /* len is in nanoseconds. we have 90 000 pts per second. */
 628         pts = len / 11111;
 629         return 0;
 630 }
 631
 632 RESULT eServiceMP3::setTrickmode(int trick)
 633 {
 634                 /* trickmode is not yet supported by our dvbmediasinks. */
 635         return -1;
 636 }
 637
 638 RESULT eServiceMP3::isCurrentlySeekable()
 639 {
 640         return 1;
 641 }
 642
 643 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 644 {
 645         i = this;
 646         return 0;
 647 }
 648
 649 RESULT eServiceMP3::getName(std::string &name)
 650 {
 651         name = m_filename;
 652         size_t n = name.rfind('/');
 653         if (n != std::string::npos)
 654                 name = name.substr(n + 1);
 655         return 0;
 656 }
 657
 658 int eServiceMP3::getInfo(int w)
 659 {
 660         gchar *tag = 0;
 661
 662         switch (w)
 663         {
 664         case sTitle:
 665         case sArtist:
 666         case sAlbum:
 667         case sComment:
 668         case sTracknumber:
 669         case sGenre:
 670         case sVideoType:
 671                 return resIsString;
 672         case sCurrentTitle:
 673                 tag = GST_TAG_TRACK_NUMBER;
 674                 break;
 675         case sTotalTitles:
 676                 tag = GST_TAG_TRACK_COUNT;
 677                 break;
 678         default:
 679                 return resNA;
 680         }
 681
 682         if (!m_stream_tags || !tag)
 683                 return 0;
 684
 685         guint value;
 686         if (gst_tag_list_get_uint(m_stream_tags, tag, &value))
 687                 return (int) value;
 688
 689         return 0;
 690
 691 }
 692
 693 std::string eServiceMP3::getInfoString(int w)
 694 {
 695         gchar *tag = 0;
 696         switch (w)
 697         {
 698         case sTitle:
 699                 tag = GST_TAG_TITLE;
 700                 break;
 701         case sArtist:
 702                 tag = GST_TAG_ARTIST;
 703                 break;
 704         case sAlbum:
 705                 tag = GST_TAG_ALBUM;
 706                 break;
 707         case sComment:
 708                 tag = GST_TAG_COMMENT;
 709                 break;
 710         case sTracknumber:
 711                 tag = GST_TAG_TRACK_NUMBER;
 712                 break;
 713         case sGenre:
 714                 tag = GST_TAG_GENRE;
 715                 break;
 716         case sVideoType:
 717                 tag = GST_TAG_VIDEO_CODEC;
 718                 break;
 719         default:
 720                 return "";
 721         }
 722
 723         if (!m_stream_tags || !tag)
 724                 return "";
 725
 726         gchar *value;
 727
 728         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 729         {
 730                 std::string res = value;
 731                 g_free(value);
 732                 return res;
 733         }
 734
 735         return "";
 736 }
 737
 738 RESULT eServiceMP3::audioChannel(ePtr<iAudioChannelSelection> &ptr)
 739 {
 740         ptr = this;
 741         return 0;
 742 }
 743
 744 RESULT eServiceMP3::audioTracks(ePtr<iAudioTrackSelection> &ptr)
 745 {
 746         ptr = this;
 747         return 0;
 748 }
 749
 750 RESULT eServiceMP3::subtitle(ePtr<iSubtitleOutput> &ptr)
 751 {
 752         ptr = this;
 753         return 0;
 754 }
 755
 756 int eServiceMP3::getNumberOfTracks()
 757 {
 758         return m_audioStreams.size();
 759 }
 760
 761 int eServiceMP3::getCurrentTrack()
 762 {
 763         return m_currentAudioStream;
 764 }
 765
 766 RESULT eServiceMP3::selectTrack(unsigned int i)
 767 {
 768         int ret = selectAudioStream(i);
 769         /* flush */
 770         pts_t ppos;
 771         getPlayPosition(ppos);
 772         seekTo(ppos);
 773
 774         return ret;
 775 }
 776
 777 int eServiceMP3::selectAudioStream(int i)
 778 {
 779         gint nb_sources;
 780         GstPad *active_pad;
 781         GstElement *switch_audio = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_audio");
 782         if ( !switch_audio )
 783         {
 784                 eDebug("can't switch audio tracks! gst-plugin-selector needed");
 785                 return -1;
 786         }
 787         g_object_get (G_OBJECT (switch_audio), "n-pads", &nb_sources, NULL);
 788         if ( (unsigned int)i >= m_audioStreams.size() || i >= nb_sources || (unsigned int)m_currentAudioStream >= m_audioStreams.size() )
 789                 return -2;
 790         char sinkpad[8];
 791         sprintf(sinkpad, "sink%d", i);
 792         g_object_set (G_OBJECT (switch_audio), "active-pad", gst_element_get_pad (switch_audio, sinkpad), NULL);
 793         g_object_get (G_OBJECT (switch_audio), "active-pad", &active_pad, NULL);
 794         gchar *name;
 795         name = gst_pad_get_name (active_pad);
 796         eDebug ("switched audio to (%s)", name);
 797         g_free(name);
 798         m_currentAudioStream = i;
 799         return 0;
 800 }
 801
 802 int eServiceMP3::getCurrentChannel()
 803 {
 804         return STEREO;
 805 }
 806
 807 RESULT eServiceMP3::selectChannel(int i)
 808 {
 809         eDebug("eServiceMP3::selectChannel(%i)",i);
 810         return 0;
 811 }
 812
 813 RESULT eServiceMP3::getTrackInfo(struct iAudioTrackInfo &info, unsigned int i)
 814 {
 815 //      eDebug("eServiceMP3::getTrackInfo(&info, %i)",i);
 816         if (i >= m_audioStreams.size())
 817                 return -2;
 818         if (m_audioStreams[i].type == atMPEG)
 819                 info.m_description = "MPEG";
 820         else if (m_audioStreams[i].type == atMP3)
 821                 info.m_description = "MP3";
 822         else if (m_audioStreams[i].type == atAC3)
 823                 info.m_description = "AC3";
 824         else if (m_audioStreams[i].type == atAAC)
 825                 info.m_description = "AAC";
 826         else if (m_audioStreams[i].type == atDTS)
 827                 info.m_description = "DTS";
 828         else if (m_audioStreams[i].type == atPCM)
 829                 info.m_description = "PCM";
 830         else if (m_audioStreams[i].type == atOGG)
 831                 info.m_description = "OGG";
 832         else
 833                 info.m_description = "???";
 834         if (info.m_language.empty())
 835                 info.m_language = m_audioStreams[i].language_code;
 836         return 0;
 837 }
 838
 839 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 840 {
 841         if (!msg)
 842                 return;
 843         gchar *sourceName;
 844         GstObject *source;
 845
 846         source = GST_MESSAGE_SRC(msg);
 847         sourceName = gst_object_get_name(source);
 848
 849         if (gst_message_get_structure(msg))
 850         {
 851                 gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 852                 eDebug("gst_message from %s: %s", sourceName, string);
 853                 g_free(string);
 854         }
 855         else
 856                 eDebug("gst_message from %s: %s (without structure)", sourceName, GST_MESSAGE_TYPE_NAME(msg));
 857
 858         switch (GST_MESSAGE_TYPE (msg))
 859         {
 860         case GST_MESSAGE_EOS:
 861                 m_event((iPlayableService*)this, evEOF);
 862                 break;
 863         case GST_MESSAGE_ERROR:
 864         {
 865                 gchar *debug;
 866                 GError *err;
 867
 868                 gst_message_parse_error (msg, &err, &debug);
 869                 g_free (debug);
 870                 eWarning("Gstreamer error: %s (%i)", err->message, err->code );
 871                 if ( err->domain == GST_STREAM_ERROR && err->code == GST_STREAM_ERROR_DECODE )
 872                 {
 873                         if ( g_strrstr(sourceName, "videosink") )
 874                                 m_event((iPlayableService*)this, evUser+11);
 875                 }
 876                 g_error_free(err);
 877                         /* TODO: signal error condition to user */
 878                 break;
 879         }
 880         case GST_MESSAGE_TAG:
 881         {
 882                 GstTagList *tags, *result;
 883                 gst_message_parse_tag(msg, &tags);
 884
 885                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 886                 if (result)
 887                 {
 888                         if (m_stream_tags)
 889                                 gst_tag_list_free(m_stream_tags);
 890                         m_stream_tags = result;
 891                 }
 892
 893                 gchar *g_audiocodec;
 894                 if ( gst_tag_list_get_string(tags, GST_TAG_AUDIO_CODEC, &g_audiocodec) && m_audioStreams.size() == 0 )
 895                 {
 896                         GstPad* pad = gst_element_get_pad (GST_ELEMENT(source), "src");
 897                         GstCaps* caps = gst_pad_get_caps(pad);
 898                         GstStructure* str = gst_caps_get_structure(caps, 0);
 899                         if ( !str )
 900                                 break;
 901                         audioStream audio;
 902                         audio.type = gstCheckAudioPad(str);
 903                         m_audioStreams.push_back(audio);
 904                 }
 905                 break;
 906         }
 907         case GST_MESSAGE_ASYNC_DONE:
 908         {
 909                 GstTagList *tags;
 910                 for (std::vector<audioStream>::iterator IterAudioStream(m_audioStreams.begin()); IterAudioStream != m_audioStreams.end(); ++IterAudioStream)
 911                 {
 912                         if ( IterAudioStream->pad )
 913                         {
 914                                 g_object_get(IterAudioStream->pad, "tags", &tags, NULL);
 915                                 gchar *g_language;
 916                                 if ( gst_is_tag_list(tags) && gst_tag_list_get_string(tags, GST_TAG_LANGUAGE_CODE, &g_language) )
 917                                 {
 918                                         eDebug("found audio language %s",g_language);
 919                                         IterAudioStream->language_code = std::string(g_language);
 920                                         g_free (g_language);
 921                                 }
 922                         }
 923                 }
 924                 for (std::vector<subtitleStream>::iterator IterSubtitleStream(m_subtitleStreams.begin()); IterSubtitleStream != m_subtitleStreams.end(); ++IterSubtitleStream)
 925                 {
 926                         if ( IterSubtitleStream->pad )
 927                         {
 928                                 g_object_get(IterSubtitleStream->pad, "tags", &tags, NULL);
 929                                 gchar *g_language;
 930                                 if ( gst_is_tag_list(tags) && gst_tag_list_get_string(tags, GST_TAG_LANGUAGE_CODE, &g_language) )
 931                                 {
 932                                         eDebug("found subtitle language %s",g_language);
 933                                         IterSubtitleStream->language_code = std::string(g_language);
 934                                         g_free (g_language);
 935                                 }
 936                         }
 937                 }
 938         }
 939         default:
 940                 break;
 941         }
 942         g_free (sourceName);
 943 }
 944
 945 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
 946 {
 947         eServiceMP3 *_this = (eServiceMP3*)user_data;
 948         _this->m_pump.send(1);
 949                 /* wake */
 950         return GST_BUS_PASS;
 951 }
 952
 953 audiotype_t eServiceMP3::gstCheckAudioPad(GstStructure* structure)
 954 {
 955         const gchar* type;
 956         type = gst_structure_get_name(structure);
 957
 958         if (!strcmp(type, "audio/mpeg")) {
 959                         gint mpegversion, layer = 0;
 960                         gst_structure_get_int (structure, "mpegversion", &mpegversion);
 961                         gst_structure_get_int (structure, "layer", &layer);
 962                         eDebug("mime audio/mpeg version %d layer %d", mpegversion, layer);
 963                         switch (mpegversion) {
 964                                 case 1:
 965                                 {
 966                                         if ( layer == 3 )
 967                                                 return atMP3;
 968                                         else
 969                                                 return atMPEG;
 970                                 }
 971                                 case 2:
 972                                         return atMPEG;
 973                                 case 4:
 974                                         return atAAC;
 975                                 default:
 976                                         return atUnknown;
 977                         }
 978                 }
 979         else
 980         {
 981                 eDebug("mime %s", type);
 982                 if (!strcmp(type, "audio/x-ac3") || !strcmp(type, "audio/ac3"))
 983                         return atAC3;
 984                 else if (!strcmp(type, "audio/x-dts") || !strcmp(type, "audio/dts"))
 985                         return atDTS;
 986                 else if (!strcmp(type, "audio/x-raw-int"))
 987                         return atPCM;
 988         }
 989         return atUnknown;
 990 }
 991
 992 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
 993 {
 994         const gchar* type;
 995         GstCaps* caps;
 996         GstStructure* str;
 997         caps = gst_pad_get_caps(pad);
 998         str = gst_caps_get_structure(caps, 0);
 999         type = gst_structure_get_name(str);
1000
1001         eDebug("A new pad %s:%s was created", GST_OBJECT_NAME (decodebin), GST_OBJECT_NAME (pad));
1002
1003         eServiceMP3 *_this = (eServiceMP3*)user_data;
1004         GstBin *pipeline = GST_BIN(_this->m_gst_pipeline);
1005         if (g_strrstr(type,"audio"))
1006         {
1007                 audioStream audio;
1008                 audio.type = _this->gstCheckAudioPad(str);
1009                 GstElement *switch_audio = gst_bin_get_by_name(pipeline , "switch_audio");
1010                 if ( switch_audio )
1011                 {
1012                         GstPad *sinkpad = gst_element_get_request_pad (switch_audio, "sink%d");
1013                         gst_pad_link(pad, sinkpad);
1014                         audio.pad = sinkpad;
1015                         _this->m_audioStreams.push_back(audio);
1016
1017                         if ( _this->m_audioStreams.size() == 1 )
1018                         {
1019                                 _this->selectAudioStream(0);
1020                                 gst_element_set_state (_this->m_gst_pipeline, GST_STATE_PLAYING);
1021                         }
1022                         else
1023                                 g_object_set (G_OBJECT (switch_audio), "select-all", FALSE, NULL);
1024                 }
1025                 else
1026                 {
1027                         gst_pad_link(pad, gst_element_get_static_pad(gst_bin_get_by_name(pipeline,"queue_audio"), "sink"));
1028                         _this->m_audioStreams.push_back(audio);
1029                 }
1030         }
1031         if (g_strrstr(type,"video"))
1032         {
1033                 gst_pad_link(pad, gst_element_get_static_pad(gst_bin_get_by_name(pipeline,"queue_video"), "sink"));
1034         }
1035         if (g_strrstr(type,"application/x-ssa") || g_strrstr(type,"application/x-ass"))
1036         {
1037                 GstElement *switch_subtitles = gst_bin_get_by_name(pipeline,"switch_subtitles");
1038                 if ( !switch_subtitles )
1039                 {
1040                         switch_subtitles = gst_element_factory_make ("input-selector", "switch_subtitles");
1041                         if ( !switch_subtitles )
1042                                 return;
1043                         GstElement *parser = gst_element_factory_make("ssaparse", "parse_subtitles");
1044                         GstElement *sink = gst_element_factory_make("fakesink", "sink_subtitles");
1045                         gst_bin_add_many(pipeline, switch_subtitles, parser, sink, NULL);
1046                         gst_element_link(switch_subtitles, parser);
1047                         gst_element_link(parser, sink);
1048                         g_object_set (G_OBJECT(sink), "signal-handoffs", TRUE, NULL);
1049                         g_signal_connect(sink, "handoff", G_CALLBACK(gstCBsubtitleAvail), _this);
1050                 }
1051                 GstPad *sinkpad = gst_element_get_request_pad (switch_subtitles, "sink%d");
1052                 gst_pad_link(pad, sinkpad);
1053                 subtitleStream subs;
1054                 subs.pad = sinkpad;
1055                 _this->m_subtitleStreams.push_back(subs);
1056         }
1057 }
1058
1059 void eServiceMP3::gstCBfilterPadAdded(GstElement *filter, GstPad *pad, gpointer user_data)
1060 {
1061         eServiceMP3 *_this = (eServiceMP3*)user_data;
1062         GstElement *decoder = gst_bin_get_by_name(GST_BIN(_this->m_gst_pipeline),"decoder");
1063         gst_pad_link(pad, gst_element_get_static_pad (decoder, "sink"));
1064 }
1065
1066 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
1067 {
1068         eServiceMP3 *_this = (eServiceMP3*)user_data;
1069         GstCaps *caps;
1070         GstStructure *str;
1071         GstPad *audiopad;
1072
1073         /* only link once */
1074         GstElement *audiobin = gst_bin_get_by_name(GST_BIN(_this->m_gst_pipeline),"audiobin");
1075         audiopad = gst_element_get_static_pad (audiobin, "sink");
1076         if ( !audiopad || GST_PAD_IS_LINKED (audiopad)) {
1077                 eDebug("audio already linked!");
1078                 g_object_unref (audiopad);
1079                 return;
1080         }
1081
1082         /* check media type */
1083         caps = gst_pad_get_caps (pad);
1084         str = gst_caps_get_structure (caps, 0);
1085         eDebug("gst new pad! %s", gst_structure_get_name (str));
1086
1087         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
1088                 gst_caps_unref (caps);
1089                 gst_object_unref (audiopad);
1090                 return;
1091         }
1092
1093         gst_caps_unref (caps);
1094         gst_pad_link (pad, audiopad);
1095 }
1096
1097 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
1098 {
1099         GstStructure *str;
1100
1101         /* check media type */
1102         caps = gst_pad_get_caps (pad);
1103         str = gst_caps_get_structure (caps, 0);
1104         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
1105         gst_caps_unref (caps);
1106 }
1107
1108 void eServiceMP3::gstPoll(const int&)
1109 {
1110                 /* ok, we have a serious problem here. gstBusSyncHandler sends
1111                    us the wakup signal, but likely before it was posted.
1112                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
1113
1114                    I need to understand the API a bit more to make this work
1115                    proplerly. */
1116         usleep(1);
1117
1118         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
1119         GstMessage *message;
1120         while ((message = gst_bus_pop (bus)))
1121         {
1122                 gstBusCall(bus, message);
1123                 gst_message_unref (message);
1124         }
1125 }
1126
1127 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
1128
1129 void eServiceMP3::gstCBsubtitleAvail(GstElement *element, GstBuffer *buffer, GstPad *pad, gpointer user_data)
1130 {
1131         const unsigned char *text = (unsigned char *)GST_BUFFER_DATA(buffer);
1132         eDebug("gstCBsubtitleAvail: %s",text);
1133         eServiceMP3 *_this = (eServiceMP3*)user_data;
1134         if ( _this->m_subtitle_widget )
1135         {
1136                 eDVBTeletextSubtitlePage page;
1137                 gRGB rgbcol(0xD0,0xD0,0xD0);
1138                 page.m_elements.push_back(eDVBTeletextSubtitlePageElement(rgbcol, (const char*)text));
1139                 (_this->m_subtitle_widget)->setPage(page);
1140         }
1141 }
1142
1143 RESULT eServiceMP3::enableSubtitles(eWidget *parent, ePyObject tuple)
1144 {
1145         eDebug("eServiceMP3::enableSubtitles");
1146
1147         ePyObject entry;
1148         int tuplesize = PyTuple_Size(tuple);
1149         int pid;
1150         gint nb_sources;
1151         GstPad *active_pad;
1152         GstElement *switch_subtitles = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_subtitles");
1153
1154         if (!PyTuple_Check(tuple))
1155                 goto error_out;
1156         if (tuplesize < 1)
1157                 goto error_out;
1158         entry = PyTuple_GET_ITEM(tuple, 1);
1159         if (!PyInt_Check(entry))
1160                 goto error_out;
1161         pid = PyInt_AsLong(entry);
1162
1163         m_subtitle_widget = new eSubtitleWidget(parent);
1164         m_subtitle_widget->resize(parent->size()); /* full size */
1165
1166         if ( !switch_subtitles )
1167         {
1168                 eDebug("can't switch subtitle tracks! gst-plugin-selector needed");
1169                 return -2;
1170         }
1171         g_object_get (G_OBJECT (switch_subtitles), "n-pads", &nb_sources, NULL);
1172         if ( (unsigned int)pid >= m_subtitleStreams.size() || pid >= nb_sources || (unsigned int)m_currentSubtitleStream >= m_subtitleStreams.size() )
1173                 return -2;
1174         char sinkpad[8];
1175         sprintf(sinkpad, "sink%d", pid);
1176         g_object_set (G_OBJECT (switch_subtitles), "active-pad", gst_element_get_pad (switch_subtitles, sinkpad), NULL);
1177         g_object_get (G_OBJECT (switch_subtitles), "active-pad", &active_pad, NULL);
1178         gchar *name;
1179         name = gst_pad_get_name (active_pad);
1180         eDebug ("switched subtitles to (%s)", name);
1181         g_free(name);
1182         m_currentSubtitleStream = pid;
1183
1184         return 0;
1185 error_out:
1186         eDebug("enableSubtitles needs a tuple as 2nd argument!\n"
1187                 "for gst subtitles (2, subtitle_stream_count)");
1188         return -1;
1189 }
1190
1191 RESULT eServiceMP3::disableSubtitles(eWidget *parent)
1192 {
1193         eDebug("eServiceMP3::disableSubtitles");
1194         delete m_subtitle_widget;
1195         m_subtitle_widget = 0;
1196         return 0;
1197 }
1198
1199 PyObject *eServiceMP3::getCachedSubtitle()
1200 {
1201         eDebug("eServiceMP3::getCachedSubtitle");
1202         Py_RETURN_NONE;
1203 }
1204
1205 PyObject *eServiceMP3::getSubtitleList()
1206 {
1207         eDebug("eServiceMP3::getSubtitleList");
1208
1209         ePyObject l = PyList_New(0);
1210         int stream_count = 0;
1211
1212         for (std::vector<subtitleStream>::iterator IterSubtitleStream(m_subtitleStreams.begin()); IterSubtitleStream != m_subtitleStreams.end(); ++IterSubtitleStream)
1213         {
1214                 ePyObject tuple = PyTuple_New(5);
1215                 PyTuple_SET_ITEM(tuple, 0, PyInt_FromLong(2));
1216                 PyTuple_SET_ITEM(tuple, 1, PyInt_FromLong(stream_count));
1217                 PyTuple_SET_ITEM(tuple, 2, PyInt_FromLong(0));
1218                 PyTuple_SET_ITEM(tuple, 3, PyInt_FromLong(0));
1219                 PyTuple_SET_ITEM(tuple, 4, PyString_FromString((IterSubtitleStream->language_code).c_str()));
1220                 PyList_Append(l, tuple);
1221                 Py_DECREF(tuple);
1222                 stream_count++;
1223         }
1224
1225         return l;
1226 }
1227
1228 #else
1229 #warning gstreamer not available, not building media player
1230 #endif