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 <gst/pbutils/missing-plugins.h>
  16 #include <sys/stat.h>
  17 /* for subtitles */
  18 #include <lib/gui/esubtitle.h>
  19 #include <errno.h>
  20
  21 // eServiceFactoryMP3
  22
  23 eServiceFactoryMP3::eServiceFactoryMP3()
  24 {
  25         ePtr<eServiceCenter> sc;
  26
  27         eServiceCenter::getPrivInstance(sc);
  28         if (sc)
  29         {
  30                 std::list<std::string> extensions;
  31                 extensions.push_back("mp2");
  32                 extensions.push_back("mp3");
  33                 extensions.push_back("ogg");
  34                 extensions.push_back("mpg");
  35                 extensions.push_back("vob");
  36                 extensions.push_back("wav");
  37                 extensions.push_back("wave");
  38                 extensions.push_back("mkv");
  39                 extensions.push_back("avi");
  40                 extensions.push_back("divx");
  41                 extensions.push_back("dat");
  42                 extensions.push_back("flac");
  43                 extensions.push_back("mp4");
  44                 sc->addServiceFactory(eServiceFactoryMP3::id, this, extensions);
  45         }
  46
  47         m_service_info = new eStaticServiceMP3Info();
  48 }
  49
  50 eServiceFactoryMP3::~eServiceFactoryMP3()
  51 {
  52         ePtr<eServiceCenter> sc;
  53
  54         eServiceCenter::getPrivInstance(sc);
  55         if (sc)
  56                 sc->removeServiceFactory(eServiceFactoryMP3::id);
  57 }
  58
  59 DEFINE_REF(eServiceFactoryMP3)
  60
  61         // iServiceHandler
  62 RESULT eServiceFactoryMP3::play(const eServiceReference &ref, ePtr<iPlayableService> &ptr)
  63 {
  64                 // check resources...
  65         ptr = new eServiceMP3(ref.path.c_str());
  66         return 0;
  67 }
  68
  69 RESULT eServiceFactoryMP3::record(const eServiceReference &ref, ePtr<iRecordableService> &ptr)
  70 {
  71         ptr=0;
  72         return -1;
  73 }
  74
  75 RESULT eServiceFactoryMP3::list(const eServiceReference &, ePtr<iListableService> &ptr)
  76 {
  77         ptr=0;
  78         return -1;
  79 }
  80
  81 RESULT eServiceFactoryMP3::info(const eServiceReference &ref, ePtr<iStaticServiceInformation> &ptr)
  82 {
  83         ptr = m_service_info;
  84         return 0;
  85 }
  86
  87 class eMP3ServiceOfflineOperations: public iServiceOfflineOperations
  88 {
  89         DECLARE_REF(eMP3ServiceOfflineOperations);
  90         eServiceReference m_ref;
  91 public:
  92         eMP3ServiceOfflineOperations(const eServiceReference &ref);
  93
  94         RESULT deleteFromDisk(int simulate);
  95         RESULT getListOfFilenames(std::list<std::string> &);
  96 };
  97
  98 DEFINE_REF(eMP3ServiceOfflineOperations);
  99
 100 eMP3ServiceOfflineOperations::eMP3ServiceOfflineOperations(const eServiceReference &ref): m_ref((const eServiceReference&)ref)
 101 {
 102 }
 103
 104 RESULT eMP3ServiceOfflineOperations::deleteFromDisk(int simulate)
 105 {
 106         if (simulate)
 107                 return 0;
 108         else
 109         {
 110                 std::list<std::string> res;
 111                 if (getListOfFilenames(res))
 112                         return -1;
 113
 114                 eBackgroundFileEraser *eraser = eBackgroundFileEraser::getInstance();
 115                 if (!eraser)
 116                         eDebug("FATAL !! can't get background file eraser");
 117
 118                 for (std::list<std::string>::iterator i(res.begin()); i != res.end(); ++i)
 119                 {
 120                         eDebug("Removing %s...", i->c_str());
 121                         if (eraser)
 122                                 eraser->erase(i->c_str());
 123                         else
 124                                 ::unlink(i->c_str());
 125                 }
 126
 127                 return 0;
 128         }
 129 }
 130
 131 RESULT eMP3ServiceOfflineOperations::getListOfFilenames(std::list<std::string> &res)
 132 {
 133         res.clear();
 134         res.push_back(m_ref.path);
 135         return 0;
 136 }
 137
 138
 139 RESULT eServiceFactoryMP3::offlineOperations(const eServiceReference &ref, ePtr<iServiceOfflineOperations> &ptr)
 140 {
 141         ptr = new eMP3ServiceOfflineOperations(ref);
 142         return 0;
 143 }
 144
 145 // eStaticServiceMP3Info
 146
 147
 148 // eStaticServiceMP3Info is seperated from eServiceMP3 to give information
 149 // about unopened files.
 150
 151 // probably eServiceMP3 should use this class as well, and eStaticServiceMP3Info
 152 // should have a database backend where ID3-files etc. are cached.
 153 // this would allow listing the mp3 database based on certain filters.
 154
 155 DEFINE_REF(eStaticServiceMP3Info)
 156
 157 eStaticServiceMP3Info::eStaticServiceMP3Info()
 158 {
 159 }
 160
 161 RESULT eStaticServiceMP3Info::getName(const eServiceReference &ref, std::string &name)
 162 {
 163         size_t last = ref.path.rfind('/');
 164         if (last != std::string::npos)
 165                 name = ref.path.substr(last+1);
 166         else
 167                 name = ref.path;
 168         return 0;
 169 }
 170
 171 int eStaticServiceMP3Info::getLength(const eServiceReference &ref)
 172 {
 173         return -1;
 174 }
 175
 176 // eServiceMP3
 177
 178 eServiceMP3::eServiceMP3(const char *filename): m_filename(filename), m_pump(eApp, 1)
 179 {
 180         m_seekTimeout = eTimer::create(eApp);
 181         m_stream_tags = 0;
 182         m_currentAudioStream = 0;
 183         m_currentSubtitleStream = 0;
 184         m_subtitle_widget = 0;
 185         m_currentTrickRatio = 0;
 186         CONNECT(m_seekTimeout->timeout, eServiceMP3::seekTimeoutCB);
 187         CONNECT(m_pump.recv_msg, eServiceMP3::gstPoll);
 188         GstElement *source = 0;
 189
 190         GstElement *decoder = 0, *conv = 0, *flt = 0, *sink = 0; /* for audio */
 191
 192         GstElement *audio = 0, *switch_audio = 0, *queue_audio = 0, *video = 0, *queue_video = 0, *videodemux = 0;
 193
 194         m_state = stIdle;
 195         eDebug("SERVICEMP3 construct!");
 196
 197                 /* FIXME: currently, decodebin isn't possible for
 198                    video streams. in that case, make a manual pipeline. */
 199
 200         const char *ext = strrchr(filename, '.');
 201         if (!ext)
 202                 ext = filename;
 203
 204         sourceStream sourceinfo;
 205         if ( (strcasecmp(ext, ".mpeg") && strcasecmp(ext, ".mpg") && strcasecmp(ext, ".vob") && strcasecmp(ext, ".bin") && strcasecmp(ext, ".dat") ) == 0 )
 206                 sourceinfo.containertype = ctMPEGPS;
 207         else if ( strcasecmp(ext, ".ts") == 0 )
 208                 sourceinfo.containertype = ctMPEGTS;
 209         else if ( strcasecmp(ext, ".mkv") == 0 )
 210                 sourceinfo.containertype = ctMKV;
 211         else if ( strcasecmp(ext, ".avi") == 0 || strcasecmp(ext, ".divx") == 0)
 212                 sourceinfo.containertype = ctAVI;
 213         else if ( strcasecmp(ext, ".mp4") == 0 )
 214                 sourceinfo.containertype = ctMP4;
 215         else if ( (strncmp(filename, "/autofs/", 8) || strncmp(filename+strlen(filename)-13, "/track-", 7) || strcasecmp(ext, ".wav")) == 0 )
 216                 sourceinfo.containertype = ctCDA;
 217         if ( strcasecmp(ext, ".dat") == 0 )
 218                 sourceinfo.containertype = ctVCD;
 219         if ( (strncmp(filename, "http://", 7)) == 0 )
 220                 sourceinfo.is_streaming = TRUE;
 221
 222         sourceinfo.is_video = ( sourceinfo.containertype && sourceinfo.containertype != ctCDA );
 223
 224         eDebug("filename=%s, containertype=%d, is_video=%d, is_streaming=%d", filename, sourceinfo.containertype, sourceinfo.is_video, sourceinfo.is_streaming);
 225
 226         int all_ok = 0;
 227
 228         m_gst_pipeline = gst_pipeline_new ("mediaplayer");
 229         if (!m_gst_pipeline)
 230                 m_error_message = "failed to create GStreamer pipeline!\n";
 231
 232         if ( sourceinfo.is_streaming )
 233         {
 234                 eDebug("play webradio!");
 235                 source = gst_element_factory_make ("neonhttpsrc", "http-source");
 236                 if (source)
 237                 {
 238                         g_object_set (G_OBJECT (source), "location", filename, NULL);
 239                         g_object_set (G_OBJECT (source), "automatic-redirect", TRUE, NULL);
 240                 }
 241                 else
 242                         m_error_message = "GStreamer plugin neonhttpsrc not available!\n";
 243         }
 244         else if ( sourceinfo.containertype == ctCDA )
 245         {
 246                 source = gst_element_factory_make ("cdiocddasrc", "cda-source");
 247                 if (source)
 248                 {
 249                         g_object_set (G_OBJECT (source), "device", "/dev/cdroms/cdrom0", NULL);
 250                         int track = atoi(filename+18);
 251                         eDebug("play audio CD track #%i",track);
 252                         if (track > 0)
 253                                 g_object_set (G_OBJECT (source), "track", track, NULL);
 254                 }
 255                 else
 256                         sourceinfo.containertype = ctNone;
 257         }
 258         if ( !sourceinfo.is_streaming && sourceinfo.containertype != ctCDA )
 259         {
 260                 source = gst_element_factory_make ("filesrc", "file-source");
 261                 if (source)
 262                         g_object_set (G_OBJECT (source), "location", filename, NULL);
 263                 else
 264                         m_error_message = "GStreamer can't open filesrc " + (std::string)filename + "!\n";
 265         }
 266         if ( sourceinfo.is_video )
 267         {
 268                         /* filesrc -> mpegdemux -> | queue_audio -> dvbaudiosink
 269                                                    | queue_video -> dvbvideosink */
 270
 271                 audio = gst_element_factory_make("dvbaudiosink", "audiosink");
 272                 if (!audio)
 273                         m_error_message += "failed to create Gstreamer element dvbaudiosink\n";
 274
 275                 video = gst_element_factory_make("dvbvideosink", "videosink");
 276                 if (!video)
 277                         m_error_message += "failed to create Gstreamer element dvbvideosink\n";
 278
 279                 queue_audio = gst_element_factory_make("queue", "queue_audio");
 280                 queue_video = gst_element_factory_make("queue", "queue_video");
 281
 282                 std::string demux_type;
 283                 switch (sourceinfo.containertype)
 284                 {
 285                         case ctMPEGTS:
 286                                 demux_type = "flutsdemux";
 287                                 break;
 288                         case ctMPEGPS:
 289                         case ctVCD:
 290                                 demux_type = "flupsdemux";
 291                                 break;
 292                         case ctMKV:
 293                                 demux_type = "matroskademux";
 294                                 break;
 295                         case ctAVI:
 296                                 demux_type = "avidemux";
 297                                 break;
 298                         case ctMP4:
 299                                 demux_type = "qtdemux";
 300                                 break;
 301                         default:
 302                                 break;
 303                 }
 304                 videodemux = gst_element_factory_make(demux_type.c_str(), "videodemux");
 305                 if (!videodemux)
 306                         m_error_message = "GStreamer plugin " + demux_type + " not available!\n";
 307
 308                 switch_audio = gst_element_factory_make ("input-selector", "switch_audio");
 309                 if (!switch_audio)
 310                         m_error_message = "GStreamer plugin input-selector not available!\n";
 311
 312                 if (audio && queue_audio && video && queue_video && videodemux && switch_audio)
 313                 {
 314                         g_object_set (G_OBJECT (queue_audio), "max-size-bytes", 256*1024, NULL);
 315                         g_object_set (G_OBJECT (queue_audio), "max-size-buffers", 0, NULL);
 316                         g_object_set (G_OBJECT (queue_audio), "max-size-time", (guint64)0, NULL);
 317                         g_object_set (G_OBJECT (queue_video), "max-size-buffers", 0, NULL);
 318                         g_object_set (G_OBJECT (queue_video), "max-size-bytes", 2*1024*1024, NULL);
 319                         g_object_set (G_OBJECT (queue_video), "max-size-time", (guint64)0, NULL);
 320                         g_object_set (G_OBJECT (switch_audio), "select-all", TRUE, NULL);
 321                         all_ok = 1;
 322                 }
 323         } else /* is audio */
 324         {
 325
 326                         /* filesrc -> decodebin -> audioconvert -> capsfilter -> alsasink */
 327                 decoder = gst_element_factory_make ("decodebin", "decoder");
 328                 if (!decoder)
 329                         m_error_message += "failed to create Gstreamer element decodebin\n";
 330
 331                 conv = gst_element_factory_make ("audioconvert", "converter");
 332                 if (!conv)
 333                         m_error_message += "failed to create Gstreamer element audioconvert\n";
 334
 335                 flt = gst_element_factory_make ("capsfilter", "flt");
 336                 if (!flt)
 337                         m_error_message += "failed to create Gstreamer element capsfilter\n";
 338
 339                         /* for some reasons, we need to set the sample format to depth/width=16, because auto negotiation doesn't work. */
 340                         /* endianness, however, is not required to be set anymore. */
 341                 if (flt)
 342                 {
 343                         GstCaps *caps = gst_caps_new_simple("audio/x-raw-int", /* "endianness", G_TYPE_INT, 4321, */ "depth", G_TYPE_INT, 16, "width", G_TYPE_INT, 16, /*"channels", G_TYPE_INT, 2, */NULL);
 344                         g_object_set (G_OBJECT (flt), "caps", caps, NULL);
 345                         gst_caps_unref(caps);
 346                 }
 347
 348                 sink = gst_element_factory_make ("alsasink", "alsa-output");
 349                 if (!sink)
 350                         m_error_message += "failed to create Gstreamer element alsasink\n";
 351
 352                 if (source && decoder && conv && sink)
 353                         all_ok = 1;
 354         }
 355         if (m_gst_pipeline && all_ok)
 356         {
 357                 gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
 358
 359                 if ( sourceinfo.containertype == ctCDA )
 360                 {
 361                         queue_audio = gst_element_factory_make("queue", "queue_audio");
 362                         g_object_set (G_OBJECT (sink), "preroll-queue-len", 80, NULL);
 363                         gst_bin_add_many (GST_BIN (m_gst_pipeline), source, queue_audio, conv, sink, NULL);
 364                         gst_element_link_many(source, queue_audio, conv, sink, NULL);
 365                 }
 366                 else if ( sourceinfo.is_video )
 367                 {
 368                         char srt_filename[strlen(filename)+1];
 369                         strncpy(srt_filename,filename,strlen(filename)-3);
 370                         srt_filename[strlen(filename)-3]='\0';
 371                         strcat(srt_filename, "srt");
 372                         struct stat buffer;
 373                         if (stat(srt_filename, &buffer) == 0)
 374                         {
 375                                 eDebug("subtitle file found: %s",srt_filename);
 376                                 GstElement *subsource = gst_element_factory_make ("filesrc", "srt_source");
 377                                 g_object_set (G_OBJECT (subsource), "location", srt_filename, NULL);
 378                                 gst_bin_add(GST_BIN (m_gst_pipeline), subsource);
 379                                 GstPad *switchpad = gstCreateSubtitleSink(this, stSRT);
 380                                 gst_pad_link(gst_element_get_pad (subsource, "src"), switchpad);
 381                                 subtitleStream subs;
 382                                 subs.pad = switchpad;
 383                                 subs.type = stSRT;
 384                                 subs.language_code = std::string("und");
 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, switch_audio, NULL);
 388
 389                         if ( sourceinfo.containertype == ctVCD )
 390                         {
 391                                 GstElement *cdxaparse = gst_element_factory_make("cdxaparse", "cdxaparse");
 392                                 gst_bin_add(GST_BIN(m_gst_pipeline), cdxaparse);
 393                                 gst_element_link(source, cdxaparse);
 394                                 gst_element_link(cdxaparse, videodemux);
 395                         }
 396                         else
 397                                 gst_element_link(source, videodemux);
 398
 399                         gst_element_link(switch_audio, queue_audio);
 400                         gst_element_link(queue_audio, audio);
 401                         gst_element_link(queue_video, video);
 402                         g_signal_connect(videodemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 403
 404                 } else /* is audio*/
 405                 {
 406                         queue_audio = gst_element_factory_make("queue", "queue_audio");
 407
 408                         g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
 409                         g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
 410
 411                         g_object_set (G_OBJECT (sink), "preroll-queue-len", 80, NULL);
 412
 413                                 /* gst_bin will take the 'floating references' */
 414                         gst_bin_add_many (GST_BIN (m_gst_pipeline),
 415                                                 source, queue_audio, decoder, NULL);
 416
 417                                 /* in decodebin's case we can just connect the source with the decodebin, and decodebin will take care about id3demux (or whatever is required) */
 418                         gst_element_link_many(source, queue_audio, decoder, NULL);
 419
 420                                 /* create audio bin with the audioconverter, the capsfilter and the audiosink */
 421                         audio = gst_bin_new ("audiobin");
 422
 423                         GstPad *audiopad = gst_element_get_static_pad (conv, "sink");
 424                         gst_bin_add_many(GST_BIN(audio), conv, flt, sink, NULL);
 425                         gst_element_link_many(conv, flt, sink, NULL);
 426                         gst_element_add_pad(audio, gst_ghost_pad_new ("sink", audiopad));
 427                         gst_object_unref(audiopad);
 428                         gst_bin_add (GST_BIN(m_gst_pipeline), audio);
 429                 }
 430         } else
 431         {
 432                 m_event((iPlayableService*)this, evUser+12);
 433
 434                 if (m_gst_pipeline)
 435                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 436                 if (source)
 437                         gst_object_unref(GST_OBJECT(source));
 438                 if (decoder)
 439                         gst_object_unref(GST_OBJECT(decoder));
 440                 if (conv)
 441                         gst_object_unref(GST_OBJECT(conv));
 442                 if (sink)
 443                         gst_object_unref(GST_OBJECT(sink));
 444
 445                 if (audio)
 446                         gst_object_unref(GST_OBJECT(audio));
 447                 if (queue_audio)
 448                         gst_object_unref(GST_OBJECT(queue_audio));
 449                 if (video)
 450                         gst_object_unref(GST_OBJECT(video));
 451                 if (queue_video)
 452                         gst_object_unref(GST_OBJECT(queue_video));
 453                 if (videodemux)
 454                         gst_object_unref(GST_OBJECT(videodemux));
 455                 if (switch_audio)
 456                         gst_object_unref(GST_OBJECT(switch_audio));
 457
 458                 eDebug("sorry, can't play: %s",m_error_message.c_str());
 459                 m_gst_pipeline = 0;
 460         }
 461
 462         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 463 }
 464
 465 eServiceMP3::~eServiceMP3()
 466 {
 467         delete m_subtitle_widget;
 468         if (m_state == stRunning)
 469                 stop();
 470
 471         if (m_stream_tags)
 472                 gst_tag_list_free(m_stream_tags);
 473
 474         if (m_gst_pipeline)
 475         {
 476                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 477                 eDebug("SERVICEMP3 destruct!");
 478         }
 479 }
 480
 481 DEFINE_REF(eServiceMP3);
 482
 483 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 484 {
 485         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 486         return 0;
 487 }
 488
 489 RESULT eServiceMP3::start()
 490 {
 491         assert(m_state == stIdle);
 492
 493         m_state = stRunning;
 494         if (m_gst_pipeline)
 495         {
 496                 eDebug("starting pipeline");
 497                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 498         }
 499         m_event(this, evStart);
 500         return 0;
 501 }
 502
 503 RESULT eServiceMP3::stop()
 504 {
 505         assert(m_state != stIdle);
 506         if (m_state == stStopped)
 507                 return -1;
 508         eDebug("MP3: %s stop\n", m_filename.c_str());
 509         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 510         m_state = stStopped;
 511         return 0;
 512 }
 513
 514 RESULT eServiceMP3::setTarget(int target)
 515 {
 516         return -1;
 517 }
 518
 519 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 520 {
 521         ptr=this;
 522         return 0;
 523 }
 524
 525 RESULT eServiceMP3::setSlowMotion(int ratio)
 526 {
 527         /* we can't do slomo yet */
 528         return -1;
 529 }
 530
 531 RESULT eServiceMP3::setFastForward(int ratio)
 532 {
 533         m_currentTrickRatio = ratio;
 534         if (ratio)
 535                 m_seekTimeout->start(1000, 0);
 536         else
 537                 m_seekTimeout->stop();
 538         return 0;
 539 }
 540
 541 void eServiceMP3::seekTimeoutCB()
 542 {
 543         pts_t ppos, len;
 544         getPlayPosition(ppos);
 545         getLength(len);
 546         ppos += 90000*m_currentTrickRatio;
 547
 548         if (ppos < 0)
 549         {
 550                 ppos = 0;
 551                 m_seekTimeout->stop();
 552         }
 553         if (ppos > len)
 554         {
 555                 ppos = 0;
 556                 stop();
 557                 m_seekTimeout->stop();
 558                 return;
 559         }
 560         seekTo(ppos);
 561 }
 562
 563                 // iPausableService
 564 RESULT eServiceMP3::pause()
 565 {
 566         if (!m_gst_pipeline)
 567                 return -1;
 568         GstStateChangeReturn res = gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 569         if (res == GST_STATE_CHANGE_ASYNC)
 570         {
 571                 pts_t ppos;
 572                 getPlayPosition(ppos);
 573                 seekTo(ppos);
 574         }
 575         return 0;
 576 }
 577
 578 RESULT eServiceMP3::unpause()
 579 {
 580         if (!m_gst_pipeline)
 581                 return -1;
 582
 583         GstStateChangeReturn res;
 584         res = gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 585         return 0;
 586 }
 587
 588         /* iSeekableService */
 589 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 590 {
 591         ptr = this;
 592         return 0;
 593 }
 594
 595 RESULT eServiceMP3::getLength(pts_t &pts)
 596 {
 597         if (!m_gst_pipeline)
 598                 return -1;
 599         if (m_state != stRunning)
 600                 return -1;
 601
 602         GstFormat fmt = GST_FORMAT_TIME;
 603         gint64 len;
 604
 605         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 606                 return -1;
 607
 608                 /* len is in nanoseconds. we have 90 000 pts per second. */
 609
 610         pts = len / 11111;
 611         return 0;
 612 }
 613
 614 RESULT eServiceMP3::seekTo(pts_t to)
 615 {
 616         if (!m_gst_pipeline)
 617                 return -1;
 618
 619                 /* convert pts to nanoseconds */
 620         gint64 time_nanoseconds = to * 11111LL;
 621         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 622                 GST_SEEK_TYPE_SET, time_nanoseconds,
 623                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 624         {
 625                 eDebug("SEEK failed");
 626                 return -1;
 627         }
 628         return 0;
 629 }
 630
 631 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 632 {
 633         if (!m_gst_pipeline)
 634                 return -1;
 635
 636         pts_t ppos;
 637         getPlayPosition(ppos);
 638         ppos += to * direction;
 639         if (ppos < 0)
 640                 ppos = 0;
 641         seekTo(ppos);
 642
 643         return 0;
 644 }
 645
 646 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 647 {
 648         if (!m_gst_pipeline)
 649                 return -1;
 650         if (m_state != stRunning)
 651                 return -1;
 652
 653         GstFormat fmt = GST_FORMAT_TIME;
 654         gint64 len;
 655
 656         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 657                 return -1;
 658
 659                 /* len is in nanoseconds. we have 90 000 pts per second. */
 660         pts = len / 11111;
 661         return 0;
 662 }
 663
 664 RESULT eServiceMP3::setTrickmode(int trick)
 665 {
 666                 /* trickmode is not yet supported by our dvbmediasinks. */
 667         return -1;
 668 }
 669
 670 RESULT eServiceMP3::isCurrentlySeekable()
 671 {
 672         return 1;
 673 }
 674
 675 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 676 {
 677         i = this;
 678         return 0;
 679 }
 680
 681 RESULT eServiceMP3::getName(std::string &name)
 682 {
 683         name = m_filename;
 684         size_t n = name.rfind('/');
 685         if (n != std::string::npos)
 686                 name = name.substr(n + 1);
 687         return 0;
 688 }
 689
 690 int eServiceMP3::getInfo(int w)
 691 {
 692         gchar *tag = 0;
 693
 694         switch (w)
 695         {
 696         case sTitle:
 697         case sArtist:
 698         case sAlbum:
 699         case sComment:
 700         case sTracknumber:
 701         case sGenre:
 702         case sVideoType:
 703         case sTimeCreate:
 704         case sUser+12:
 705                 return resIsString;
 706         case sCurrentTitle:
 707                 tag = GST_TAG_TRACK_NUMBER;
 708                 break;
 709         case sTotalTitles:
 710                 tag = GST_TAG_TRACK_COUNT;
 711                 break;
 712         default:
 713                 return resNA;
 714         }
 715
 716         if (!m_stream_tags || !tag)
 717                 return 0;
 718
 719         guint value;
 720         if (gst_tag_list_get_uint(m_stream_tags, tag, &value))
 721                 return (int) value;
 722
 723         return 0;
 724
 725 }
 726
 727 std::string eServiceMP3::getInfoString(int w)
 728 {
 729         if ( !m_stream_tags )
 730                 return "";
 731         gchar *tag = 0;
 732         switch (w)
 733         {
 734         case sTitle:
 735                 tag = GST_TAG_TITLE;
 736                 break;
 737         case sArtist:
 738                 tag = GST_TAG_ARTIST;
 739                 break;
 740         case sAlbum:
 741                 tag = GST_TAG_ALBUM;
 742                 break;
 743         case sComment:
 744                 tag = GST_TAG_COMMENT;
 745                 break;
 746         case sTracknumber:
 747                 tag = GST_TAG_TRACK_NUMBER;
 748                 break;
 749         case sGenre:
 750                 tag = GST_TAG_GENRE;
 751                 break;
 752         case sVideoType:
 753                 tag = GST_TAG_VIDEO_CODEC;
 754                 break;
 755         case sTimeCreate:
 756                 GDate *date;
 757                 if (gst_tag_list_get_date(m_stream_tags, GST_TAG_DATE, &date))
 758                 {
 759                         gchar res[5];
 760                         g_date_strftime (res, sizeof(res), "%Y", date);
 761                         return (std::string)res;
 762                 }
 763                 break;
 764         case sUser+12:
 765                 return m_error_message;
 766         default:
 767                 return "";
 768         }
 769         if ( !tag )
 770                 return "";
 771         gchar *value;
 772         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 773         {
 774                 std::string res = value;
 775                 g_free(value);
 776                 return res;
 777         }
 778         return "";
 779 }
 780
 781 RESULT eServiceMP3::audioChannel(ePtr<iAudioChannelSelection> &ptr)
 782 {
 783         ptr = this;
 784         return 0;
 785 }
 786
 787 RESULT eServiceMP3::audioTracks(ePtr<iAudioTrackSelection> &ptr)
 788 {
 789         ptr = this;
 790         return 0;
 791 }
 792
 793 RESULT eServiceMP3::subtitle(ePtr<iSubtitleOutput> &ptr)
 794 {
 795         ptr = this;
 796         return 0;
 797 }
 798
 799 int eServiceMP3::getNumberOfTracks()
 800 {
 801         return m_audioStreams.size();
 802 }
 803
 804 int eServiceMP3::getCurrentTrack()
 805 {
 806         return m_currentAudioStream;
 807 }
 808
 809 RESULT eServiceMP3::selectTrack(unsigned int i)
 810 {
 811         int ret = selectAudioStream(i);
 812         /* flush */
 813         pts_t ppos;
 814         getPlayPosition(ppos);
 815         seekTo(ppos);
 816
 817         return ret;
 818 }
 819
 820 int eServiceMP3::selectAudioStream(int i)
 821 {
 822         gint nb_sources;
 823         GstPad *active_pad;
 824         GstElement *switch_audio = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_audio");
 825         if ( !switch_audio )
 826         {
 827                 eDebug("can't switch audio tracks! gst-plugin-selector needed");
 828                 return -1;
 829         }
 830         g_object_get (G_OBJECT (switch_audio), "n-pads", &nb_sources, NULL);
 831         if ( (unsigned int)i >= m_audioStreams.size() || i >= nb_sources || (unsigned int)m_currentAudioStream >= m_audioStreams.size() )
 832                 return -2;
 833         char sinkpad[8];
 834         sprintf(sinkpad, "sink%d", i);
 835         g_object_set (G_OBJECT (switch_audio), "active-pad", gst_element_get_pad (switch_audio, sinkpad), NULL);
 836         g_object_get (G_OBJECT (switch_audio), "active-pad", &active_pad, NULL);
 837         gchar *name;
 838         name = gst_pad_get_name (active_pad);
 839         eDebug ("switched audio to (%s)", name);
 840         g_free(name);
 841         m_currentAudioStream = i;
 842         return 0;
 843 }
 844
 845 int eServiceMP3::getCurrentChannel()
 846 {
 847         return STEREO;
 848 }
 849
 850 RESULT eServiceMP3::selectChannel(int i)
 851 {
 852         eDebug("eServiceMP3::selectChannel(%i)",i);
 853         return 0;
 854 }
 855
 856 RESULT eServiceMP3::getTrackInfo(struct iAudioTrackInfo &info, unsigned int i)
 857 {
 858 //      eDebug("eServiceMP3::getTrackInfo(&info, %i)",i);
 859         if (i >= m_audioStreams.size())
 860                 return -2;
 861         if (m_audioStreams[i].type == atMPEG)
 862                 info.m_description = "MPEG";
 863         else if (m_audioStreams[i].type == atMP3)
 864                 info.m_description = "MP3";
 865         else if (m_audioStreams[i].type == atAC3)
 866                 info.m_description = "AC3";
 867         else if (m_audioStreams[i].type == atAAC)
 868                 info.m_description = "AAC";
 869         else if (m_audioStreams[i].type == atDTS)
 870                 info.m_description = "DTS";
 871         else if (m_audioStreams[i].type == atPCM)
 872                 info.m_description = "PCM";
 873         else if (m_audioStreams[i].type == atOGG)
 874                 info.m_description = "OGG";
 875         else
 876                 info.m_description = "???";
 877         if (info.m_language.empty())
 878                 info.m_language = m_audioStreams[i].language_code;
 879         return 0;
 880 }
 881
 882 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 883 {
 884         if (!msg)
 885                 return;
 886         gchar *sourceName;
 887         GstObject *source;
 888
 889         source = GST_MESSAGE_SRC(msg);
 890         sourceName = gst_object_get_name(source);
 891 #if 0
 892         if (gst_message_get_structure(msg))
 893         {
 894                 gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 895                 eDebug("gst_message from %s: %s", sourceName, string);
 896                 g_free(string);
 897         }
 898         else
 899                 eDebug("gst_message from %s: %s (without structure)", sourceName, GST_MESSAGE_TYPE_NAME(msg));
 900 #endif
 901         switch (GST_MESSAGE_TYPE (msg))
 902         {
 903         case GST_MESSAGE_EOS:
 904                 m_event((iPlayableService*)this, evEOF);
 905                 break;
 906         case GST_MESSAGE_ERROR:
 907         {
 908                 gchar *debug;
 909                 GError *err;
 910
 911                 gst_message_parse_error (msg, &err, &debug);
 912                 g_free (debug);
 913                 eWarning("Gstreamer error: %s (%i)", err->message, err->code );
 914                 if ( err->domain == GST_STREAM_ERROR && err->code == GST_STREAM_ERROR_DECODE )
 915                 {
 916                         if ( g_strrstr(sourceName, "videosink") )
 917                                 m_event((iPlayableService*)this, evUser+11);
 918                 }
 919                 g_error_free(err);
 920                         /* TODO: signal error condition to user */
 921                 break;
 922         }
 923         case GST_MESSAGE_TAG:
 924         {
 925                 GstTagList *tags, *result;
 926                 gst_message_parse_tag(msg, &tags);
 927
 928                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 929                 if (result)
 930                 {
 931                         if (m_stream_tags)
 932                                 gst_tag_list_free(m_stream_tags);
 933                         m_stream_tags = result;
 934                 }
 935
 936                 gchar *g_audiocodec;
 937                 if ( gst_tag_list_get_string(tags, GST_TAG_AUDIO_CODEC, &g_audiocodec) && m_audioStreams.size() == 0 )
 938                 {
 939                         GstPad* pad = gst_element_get_pad (GST_ELEMENT(source), "src");
 940                         GstCaps* caps = gst_pad_get_caps(pad);
 941                         GstStructure* str = gst_caps_get_structure(caps, 0);
 942                         if ( !str )
 943                                 break;
 944                         audioStream audio;
 945                         audio.type = gstCheckAudioPad(str);
 946                         m_audioStreams.push_back(audio);
 947                 }
 948
 949                 GValue *gv_image = gst_tag_list_get_value_index(tags, GST_TAG_IMAGE, 0);
 950                 if ( gv_image )
 951                 {
 952                         GstBuffer *buf_image;
 953                         buf_image = gst_value_get_buffer (gv_image);
 954                         int fd = open("/tmp/.id3coverart", O_CREAT|O_WRONLY|O_TRUNC, 0644);
 955                         int ret = write(fd, GST_BUFFER_DATA(buf_image), GST_BUFFER_SIZE(buf_image));
 956                         close(fd);
 957                         m_event((iPlayableService*)this, evUser+13);
 958                 }
 959
 960                 gst_tag_list_free(tags);
 961                 m_event((iPlayableService*)this, evUpdatedInfo);
 962                 break;
 963         }
 964         case GST_MESSAGE_ASYNC_DONE:
 965         {
 966                 GstTagList *tags;
 967                 for (std::vector<audioStream>::iterator IterAudioStream(m_audioStreams.begin()); IterAudioStream != m_audioStreams.end(); ++IterAudioStream)
 968                 {
 969                         if ( IterAudioStream->pad )
 970                         {
 971                                 g_object_get(IterAudioStream->pad, "tags", &tags, NULL);
 972                                 gchar *g_language;
 973                                 if ( gst_is_tag_list(tags) && gst_tag_list_get_string(tags, GST_TAG_LANGUAGE_CODE, &g_language) )
 974                                 {
 975                                         eDebug("found audio language %s",g_language);
 976                                         IterAudioStream->language_code = std::string(g_language);
 977                                         g_free (g_language);
 978                                 }
 979                         }
 980                 }
 981                 for (std::vector<subtitleStream>::iterator IterSubtitleStream(m_subtitleStreams.begin()); IterSubtitleStream != m_subtitleStreams.end(); ++IterSubtitleStream)
 982                 {
 983                         if ( IterSubtitleStream->pad )
 984                         {
 985                                 g_object_get(IterSubtitleStream->pad, "tags", &tags, NULL);
 986                                 gchar *g_language;
 987                                 if ( gst_is_tag_list(tags) && gst_tag_list_get_string(tags, GST_TAG_LANGUAGE_CODE, &g_language) )
 988                                 {
 989                                         eDebug("found subtitle language %s",g_language);
 990                                         IterSubtitleStream->language_code = std::string(g_language);
 991                                         g_free (g_language);
 992                                 }
 993                         }
 994                 }
 995         }
 996         case GST_MESSAGE_ELEMENT:
 997         {
 998                 if ( gst_is_missing_plugin_message(msg) )
 999                 {
1000                         gchar *description = gst_missing_plugin_message_get_description(msg);
1001                         if ( description )
1002                         {
1003                                 m_error_message = "GStreamer plugin " + (std::string)description + " not available!\n";
1004                                 g_free(description);
1005                                 m_event((iPlayableService*)this, evUser+12);
1006                         }
1007                 }
1008         }
1009         default:
1010                 break;
1011         }
1012         g_free (sourceName);
1013 }
1014
1015 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
1016 {
1017         eServiceMP3 *_this = (eServiceMP3*)user_data;
1018         _this->m_pump.send(1);
1019                 /* wake */
1020         return GST_BUS_PASS;
1021 }
1022
1023 audiotype_t eServiceMP3::gstCheckAudioPad(GstStructure* structure)
1024 {
1025         const gchar* type;
1026         type = gst_structure_get_name(structure);
1027
1028         if (!strcmp(type, "audio/mpeg")) {
1029                         gint mpegversion, layer = 0;
1030                         gst_structure_get_int (structure, "mpegversion", &mpegversion);
1031                         gst_structure_get_int (structure, "layer", &layer);
1032                         eDebug("mime audio/mpeg version %d layer %d", mpegversion, layer);
1033                         switch (mpegversion) {
1034                                 case 1:
1035                                 {
1036                                         if ( layer == 3 )
1037                                                 return atMP3;
1038                                         else
1039                                                 return atMPEG;
1040                                 }
1041                                 case 2:
1042                                         return atMPEG;
1043                                 case 4:
1044                                         return atAAC;
1045                                 default:
1046                                         return atUnknown;
1047                         }
1048                 }
1049         else
1050         {
1051                 eDebug("mime %s", type);
1052                 if (!strcmp(type, "audio/x-ac3") || !strcmp(type, "audio/ac3"))
1053                         return atAC3;
1054                 else if (!strcmp(type, "audio/x-dts") || !strcmp(type, "audio/dts"))
1055                         return atDTS;
1056                 else if (!strcmp(type, "audio/x-raw-int"))
1057                         return atPCM;
1058         }
1059         return atUnknown;
1060 }
1061
1062 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
1063 {
1064         const gchar* type;
1065         GstCaps* caps;
1066         GstStructure* str;
1067         caps = gst_pad_get_caps(pad);
1068         str = gst_caps_get_structure(caps, 0);
1069         type = gst_structure_get_name(str);
1070
1071         eDebug("A new pad %s:%s was created", GST_OBJECT_NAME (decodebin), GST_OBJECT_NAME (pad));
1072
1073         eServiceMP3 *_this = (eServiceMP3*)user_data;
1074         GstBin *pipeline = GST_BIN(_this->m_gst_pipeline);
1075         if (g_strrstr(type,"audio"))
1076         {
1077                 audioStream audio;
1078                 audio.type = _this->gstCheckAudioPad(str);
1079                 GstElement *switch_audio = gst_bin_get_by_name(pipeline , "switch_audio");
1080                 if ( switch_audio )
1081                 {
1082                         GstPad *sinkpad = gst_element_get_request_pad (switch_audio, "sink%d");
1083                         gst_pad_link(pad, sinkpad);
1084                         audio.pad = sinkpad;
1085                         _this->m_audioStreams.push_back(audio);
1086
1087                         if ( _this->m_audioStreams.size() == 1 )
1088                         {
1089                                 _this->selectAudioStream(0);
1090                                 gst_element_set_state (_this->m_gst_pipeline, GST_STATE_PLAYING);
1091                         }
1092                         else
1093                                 g_object_set (G_OBJECT (switch_audio), "select-all", FALSE, NULL);
1094                 }
1095                 else
1096                 {
1097                         gst_pad_link(pad, gst_element_get_static_pad(gst_bin_get_by_name(pipeline,"queue_audio"), "sink"));
1098                         _this->m_audioStreams.push_back(audio);
1099                 }
1100         }
1101         if (g_strrstr(type,"video"))
1102         {
1103                 gst_pad_link(pad, gst_element_get_static_pad(gst_bin_get_by_name(pipeline,"queue_video"), "sink"));
1104         }
1105         if (g_strrstr(type,"application/x-ssa") || g_strrstr(type,"application/x-ass"))
1106         {
1107                 GstPad *switchpad = _this->gstCreateSubtitleSink(_this, stSSA);
1108                 gst_pad_link(pad, switchpad);
1109                 subtitleStream subs;
1110                 subs.pad = switchpad;
1111                 subs.type = stSSA;
1112                 _this->m_subtitleStreams.push_back(subs);
1113         }
1114         if (g_strrstr(type,"text/plain"))
1115         {
1116                 GstPad *switchpad = _this->gstCreateSubtitleSink(_this, stPlainText);
1117                 gst_pad_link(pad, switchpad);
1118                 subtitleStream subs;
1119                 subs.pad = switchpad;
1120                 subs.type = stPlainText;
1121                 _this->m_subtitleStreams.push_back(subs);
1122         }
1123 }
1124
1125 GstPad* eServiceMP3::gstCreateSubtitleSink(eServiceMP3* _this, subtype_t type)
1126 {
1127         GstBin *pipeline = GST_BIN(_this->m_gst_pipeline);
1128         GstElement *switch_subparse = gst_bin_get_by_name(pipeline,"switch_subparse");
1129         if ( !switch_subparse )
1130         {
1131                 switch_subparse = gst_element_factory_make ("input-selector", "switch_subparse");
1132                 GstElement *sink = gst_element_factory_make("fakesink", "sink_subtitles");
1133                 gst_bin_add_many(pipeline, switch_subparse, sink, NULL);
1134                 gst_element_link(switch_subparse, sink);
1135                 g_object_set (G_OBJECT(sink), "signal-handoffs", TRUE, NULL);
1136                 g_object_set (G_OBJECT(sink), "sync", TRUE, NULL);
1137                 g_object_set (G_OBJECT(sink), "async", FALSE, NULL);
1138                 g_signal_connect(sink, "handoff", G_CALLBACK(_this->gstCBsubtitleAvail), _this);
1139
1140                 // order is essential since requested sink pad names can't be explicitely chosen
1141                 GstElement *switch_substream_plain = gst_element_factory_make ("input-selector", "switch_substream_plain");
1142                 gst_bin_add(pipeline, switch_substream_plain);
1143                 GstPad *sinkpad_plain = gst_element_get_request_pad (switch_subparse, "sink%d");
1144                 gst_pad_link(gst_element_get_pad (switch_substream_plain, "src"), sinkpad_plain);
1145
1146                 GstElement *switch_substream_ssa = gst_element_factory_make ("input-selector", "switch_substream_ssa");
1147                 GstElement *ssaparse = gst_element_factory_make("ssaparse", "ssaparse");
1148                 gst_bin_add_many(pipeline, switch_substream_ssa, ssaparse, NULL);
1149                 GstPad *sinkpad_ssa = gst_element_get_request_pad (switch_subparse, "sink%d");
1150                 gst_element_link(switch_substream_ssa, ssaparse);
1151                 gst_pad_link(gst_element_get_pad (ssaparse, "src"), sinkpad_ssa);
1152
1153                 GstElement *switch_substream_srt = gst_element_factory_make ("input-selector", "switch_substream_srt");
1154                 GstElement *srtparse = gst_element_factory_make("subparse", "srtparse");
1155                 gst_bin_add_many(pipeline, switch_substream_srt, srtparse, NULL);
1156                 GstPad *sinkpad_srt = gst_element_get_request_pad (switch_subparse, "sink%d");
1157                 gst_element_link(switch_substream_srt, srtparse);
1158                 gst_pad_link(gst_element_get_pad (srtparse, "src"), sinkpad_srt);
1159                 g_object_set (G_OBJECT(srtparse), "subtitle-encoding", "ISO-8859-15", NULL);
1160         }
1161
1162         switch (type)
1163         {
1164                 case stSSA:
1165                         return gst_element_get_request_pad (gst_bin_get_by_name(pipeline,"switch_substream_ssa"), "sink%d");
1166                 case stSRT:
1167                         return gst_element_get_request_pad (gst_bin_get_by_name(pipeline,"switch_substream_srt"), "sink%d");
1168                 case stPlainText:
1169                 default:
1170                         break;
1171         }
1172         return gst_element_get_request_pad (gst_bin_get_by_name(pipeline,"switch_substream_plain"), "sink%d");
1173 }
1174
1175 void eServiceMP3::gstCBfilterPadAdded(GstElement *filter, GstPad *pad, gpointer user_data)
1176 {
1177         eServiceMP3 *_this = (eServiceMP3*)user_data;
1178         GstElement *decoder = gst_bin_get_by_name(GST_BIN(_this->m_gst_pipeline),"decoder");
1179         gst_pad_link(pad, gst_element_get_static_pad (decoder, "sink"));
1180 }
1181
1182 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
1183 {
1184         eServiceMP3 *_this = (eServiceMP3*)user_data;
1185         GstCaps *caps;
1186         GstStructure *str;
1187         GstPad *audiopad;
1188
1189         /* only link once */
1190         GstElement *audiobin = gst_bin_get_by_name(GST_BIN(_this->m_gst_pipeline),"audiobin");
1191         audiopad = gst_element_get_static_pad (audiobin, "sink");
1192         if ( !audiopad || GST_PAD_IS_LINKED (audiopad)) {
1193                 eDebug("audio already linked!");
1194                 g_object_unref (audiopad);
1195                 return;
1196         }
1197
1198         /* check media type */
1199         caps = gst_pad_get_caps (pad);
1200         str = gst_caps_get_structure (caps, 0);
1201         eDebug("gst new pad! %s", gst_structure_get_name (str));
1202
1203         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
1204                 gst_caps_unref (caps);
1205                 gst_object_unref (audiopad);
1206                 return;
1207         }
1208
1209         gst_caps_unref (caps);
1210         gst_pad_link (pad, audiopad);
1211 }
1212
1213 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
1214 {
1215         GstStructure *str;
1216
1217         /* check media type */
1218         caps = gst_pad_get_caps (pad);
1219         str = gst_caps_get_structure (caps, 0);
1220         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
1221         gst_caps_unref (caps);
1222 }
1223
1224 void eServiceMP3::gstPoll(const int&)
1225 {
1226                 /* ok, we have a serious problem here. gstBusSyncHandler sends
1227                    us the wakup signal, but likely before it was posted.
1228                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
1229
1230                    I need to understand the API a bit more to make this work
1231                    proplerly. */
1232         usleep(1);
1233
1234         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
1235         GstMessage *message;
1236         while ((message = gst_bus_pop (bus)))
1237         {
1238                 gstBusCall(bus, message);
1239                 gst_message_unref (message);
1240         }
1241 }
1242
1243 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
1244
1245 void eServiceMP3::gstCBsubtitleAvail(GstElement *element, GstBuffer *buffer, GstPad *pad, gpointer user_data)
1246 {
1247         gint64 duration_ns = GST_BUFFER_DURATION(buffer);
1248         const unsigned char *text = (unsigned char *)GST_BUFFER_DATA(buffer);
1249         eDebug("gstCBsubtitleAvail: %s",text);
1250         eServiceMP3 *_this = (eServiceMP3*)user_data;
1251         if ( _this->m_subtitle_widget )
1252         {
1253                 ePangoSubtitlePage page;
1254                 gRGB rgbcol(0xD0,0xD0,0xD0);
1255                 page.m_elements.push_back(ePangoSubtitlePageElement(rgbcol, (const char*)text));
1256                 page.m_timeout = duration_ns / 1000000;
1257                 (_this->m_subtitle_widget)->setPage(page);
1258         }
1259 }
1260
1261 RESULT eServiceMP3::enableSubtitles(eWidget *parent, ePyObject tuple)
1262 {
1263         ePyObject entry;
1264         int tuplesize = PyTuple_Size(tuple);
1265         int pid;
1266         int type;
1267         gint nb_sources;
1268         GstPad *active_pad;
1269         GstElement *switch_substream = NULL;
1270         GstElement *switch_subparse = gst_bin_get_by_name (GST_BIN(m_gst_pipeline), "switch_subparse");
1271
1272         if (!PyTuple_Check(tuple))
1273                 goto error_out;
1274         if (tuplesize < 1)
1275                 goto error_out;
1276         entry = PyTuple_GET_ITEM(tuple, 1);
1277         if (!PyInt_Check(entry))
1278                 goto error_out;
1279         pid = PyInt_AsLong(entry);
1280         entry = PyTuple_GET_ITEM(tuple, 2);
1281         if (!PyInt_Check(entry))
1282                 goto error_out;
1283         type = PyInt_AsLong(entry);
1284
1285         switch ((subtype_t)type)
1286         {
1287                 case stPlainText:
1288                         switch_substream = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_substream_plain");
1289                         break;
1290                 case stSSA:
1291                         switch_substream = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_substream_ssa");
1292                         break;
1293                 case stSRT:
1294                         switch_substream = gst_bin_get_by_name(GST_BIN(m_gst_pipeline),"switch_substream_srt");
1295                         break;
1296                 default:
1297                         goto error_out;
1298         }
1299
1300         m_subtitle_widget = new eSubtitleWidget(parent);
1301         m_subtitle_widget->resize(parent->size()); /* full size */
1302
1303         if ( !switch_substream )
1304         {
1305                 eDebug("can't switch subtitle tracks! gst-plugin-selector needed");
1306                 return -2;
1307         }
1308         g_object_get (G_OBJECT (switch_substream), "n-pads", &nb_sources, NULL);
1309         if ( (unsigned int)pid >= m_subtitleStreams.size() || pid >= nb_sources || (unsigned int)m_currentSubtitleStream >= m_subtitleStreams.size() )
1310                 return -2;
1311         g_object_get (G_OBJECT (switch_subparse), "n-pads", &nb_sources, NULL);
1312         if ( type < 0 || type >= nb_sources )
1313                 return -2;
1314
1315         char sinkpad[6];
1316         sprintf(sinkpad, "sink%d", type);
1317         g_object_set (G_OBJECT (switch_subparse), "active-pad", gst_element_get_pad (switch_subparse, sinkpad), NULL);
1318         sprintf(sinkpad, "sink%d", pid);
1319         g_object_set (G_OBJECT (switch_substream), "active-pad", gst_element_get_pad (switch_substream, sinkpad), NULL);
1320         m_currentSubtitleStream = pid;
1321
1322         return 0;
1323 error_out:
1324         eDebug("enableSubtitles needs a tuple as 2nd argument!\n"
1325                 "for gst subtitles (2, subtitle_stream_count, subtitle_type)");
1326         return -1;
1327 }
1328
1329 RESULT eServiceMP3::disableSubtitles(eWidget *parent)
1330 {
1331         eDebug("eServiceMP3::disableSubtitles");
1332         delete m_subtitle_widget;
1333         m_subtitle_widget = 0;
1334         return 0;
1335 }
1336
1337 PyObject *eServiceMP3::getCachedSubtitle()
1338 {
1339         eDebug("eServiceMP3::getCachedSubtitle");
1340         Py_RETURN_NONE;
1341 }
1342
1343 PyObject *eServiceMP3::getSubtitleList()
1344 {
1345         eDebug("eServiceMP3::getSubtitleList");
1346
1347         ePyObject l = PyList_New(0);
1348         int stream_count[sizeof(subtype_t)];
1349         for ( unsigned int i = 0; i < sizeof(subtype_t); i++ )
1350                 stream_count[i] = 0;
1351
1352         for (std::vector<subtitleStream>::iterator IterSubtitleStream(m_subtitleStreams.begin()); IterSubtitleStream != m_subtitleStreams.end(); ++IterSubtitleStream)
1353         {
1354                 subtype_t type = IterSubtitleStream->type;
1355                 ePyObject tuple = PyTuple_New(5);
1356                 PyTuple_SET_ITEM(tuple, 0, PyInt_FromLong(2));
1357                 PyTuple_SET_ITEM(tuple, 1, PyInt_FromLong(stream_count[type]));
1358                 PyTuple_SET_ITEM(tuple, 2, PyInt_FromLong(int(type)));
1359                 PyTuple_SET_ITEM(tuple, 3, PyInt_FromLong(0));
1360                 PyTuple_SET_ITEM(tuple, 4, PyString_FromString((IterSubtitleStream->language_code).c_str()));
1361                 PyList_Append(l, tuple);
1362                 Py_DECREF(tuple);
1363                 stream_count[type]++;
1364         }
1365         return l;
1366 }
1367
1368 #else
1369 #warning gstreamer not available, not building media player
1370 #endif