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/base/init_num.h>
  12 #include <lib/base/init.h>
  13 #include <gst/gst.h>
  14
  15 // eServiceFactoryMP3
  16
  17 eServiceFactoryMP3::eServiceFactoryMP3()
  18 {
  19         ePtr<eServiceCenter> sc;
  20
  21         eServiceCenter::getPrivInstance(sc);
  22         if (sc)
  23                 sc->addServiceFactory(eServiceFactoryMP3::id, this);
  24
  25         m_service_info = new eStaticServiceMP3Info();
  26 }
  27
  28 eServiceFactoryMP3::~eServiceFactoryMP3()
  29 {
  30         ePtr<eServiceCenter> sc;
  31
  32         eServiceCenter::getPrivInstance(sc);
  33         if (sc)
  34                 sc->removeServiceFactory(eServiceFactoryMP3::id);
  35 }
  36
  37 DEFINE_REF(eServiceFactoryMP3)
  38
  39         // iServiceHandler
  40 RESULT eServiceFactoryMP3::play(const eServiceReference &ref, ePtr<iPlayableService> &ptr)
  41 {
  42                 // check resources...
  43         ptr = new eServiceMP3(ref.path.c_str());
  44         return 0;
  45 }
  46
  47 RESULT eServiceFactoryMP3::record(const eServiceReference &ref, ePtr<iRecordableService> &ptr)
  48 {
  49         ptr=0;
  50         return -1;
  51 }
  52
  53 RESULT eServiceFactoryMP3::list(const eServiceReference &, ePtr<iListableService> &ptr)
  54 {
  55         ptr=0;
  56         return -1;
  57 }
  58
  59 RESULT eServiceFactoryMP3::info(const eServiceReference &ref, ePtr<iStaticServiceInformation> &ptr)
  60 {
  61         ptr = m_service_info;
  62         return 0;
  63 }
  64
  65 RESULT eServiceFactoryMP3::offlineOperations(const eServiceReference &, ePtr<iServiceOfflineOperations> &ptr)
  66 {
  67         ptr = 0;
  68         return -1;
  69 }
  70
  71
  72 // eStaticServiceMP3Info
  73
  74
  75 // eStaticServiceMP3Info is seperated from eServiceMP3 to give information
  76 // about unopened files.
  77
  78 // probably eServiceMP3 should use this class as well, and eStaticServiceMP3Info
  79 // should have a database backend where ID3-files etc. are cached.
  80 // this would allow listing the mp3 database based on certain filters.
  81
  82 DEFINE_REF(eStaticServiceMP3Info)
  83
  84 eStaticServiceMP3Info::eStaticServiceMP3Info()
  85 {
  86 }
  87
  88 RESULT eStaticServiceMP3Info::getName(const eServiceReference &ref, std::string &name)
  89 {
  90         size_t last = ref.path.rfind('/');
  91         if (last != std::string::npos)
  92                 name = ref.path.substr(last+1);
  93         else
  94                 name = ref.path;
  95         return 0;
  96 }
  97
  98 int eStaticServiceMP3Info::getLength(const eServiceReference &ref)
  99 {
 100         return -1;
 101 }
 102
 103 // eServiceMP3
 104
 105 eServiceMP3::eServiceMP3(const char *filename): m_filename(filename), m_pump(eApp, 1)
 106 {
 107         m_stream_tags = 0;
 108         CONNECT(m_pump.recv_msg, eServiceMP3::gstPoll);
 109         GstElement *source = 0;
 110
 111         GstElement *decoder = 0, *conv = 0, *flt = 0, *sink = 0; /* for audio */
 112
 113         GstElement *audio = 0, *queue_audio = 0, *video = 0, *queue_video = 0, *mpegdemux = 0;
 114
 115         m_state = stIdle;
 116         eDebug("SERVICEMP3 construct!");
 117
 118                 /* FIXME: currently, decodebin isn't possible for
 119                    video streams. in that case, make a manual pipeline. */
 120
 121         const char *ext = strrchr(filename, '.');
 122         if (!ext)
 123                 ext = filename;
 124
 125         int is_mpeg_ps = !(strcasecmp(ext, ".mpeg") && strcasecmp(ext, ".mpg") && strcasecmp(ext, ".vob") && strcasecmp(ext, ".bin"));
 126         int is_mpeg_ts = !strcasecmp(ext, ".ts");
 127         int is_video = is_mpeg_ps || is_mpeg_ts;
 128         int is_streaming = !strncmp(filename, "http://", 7);
 129
 130         eDebug("filename: %s, is_mpeg_ps: %d, is_mpeg_ts: %d, is_video: %d, is_streaming: %d", filename, is_mpeg_ps, is_mpeg_ts, is_video, is_streaming);
 131
 132         int use_decodebin = !is_video;
 133
 134         int all_ok = 0;
 135
 136         m_gst_pipeline = gst_pipeline_new ("audio-player");
 137         if (!m_gst_pipeline)
 138                 eWarning("failed to create pipeline");
 139
 140         if (!is_streaming)
 141                 source = gst_element_factory_make ("filesrc", "file-source");
 142         else
 143         {
 144                 source = gst_element_factory_make ("neonhttpsrc", "http-source");
 145                 g_object_set (G_OBJECT (source), "automatic-redirect", TRUE, NULL);
 146         }
 147
 148         if (!source)
 149                 eWarning("failed to create %s", is_streaming ? "neonhttpsrc" : "filesrc");
 150         else
 151                                 /* configure source */
 152                 g_object_set (G_OBJECT (source), "location", filename, NULL);
 153
 154         if (use_decodebin)
 155         {
 156                         /* filesrc -> decodebin -> audioconvert -> capsfilter -> alsasink */
 157
 158                 decoder = gst_element_factory_make ("decodebin", "decoder");
 159                 if (!decoder)
 160                         eWarning("failed to create decodebin decoder");
 161
 162                 conv = gst_element_factory_make ("audioconvert", "converter");
 163                 if (!conv)
 164                         eWarning("failed to create audioconvert");
 165
 166                 flt = gst_element_factory_make ("capsfilter", "flt");
 167                 if (!flt)
 168                         eWarning("failed to create capsfilter");
 169
 170                         /* for some reasons, we need to set the sample format to depth/width=16, because auto negotiation doesn't work. */
 171                         /* endianness, however, is not required to be set anymore. */
 172                 if (flt)
 173                 {
 174                         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);
 175                         g_object_set (G_OBJECT (flt), "caps", caps, (char*)0);
 176                         gst_caps_unref(caps);
 177                 }
 178
 179                 sink = gst_element_factory_make ("alsasink", "alsa-output");
 180                 if (!sink)
 181                         eWarning("failed to create osssink");
 182
 183                 if (source && decoder && conv && sink)
 184                         all_ok = 1;
 185         } else /* is_video */
 186         {
 187                         /* filesrc -> mpegdemux -> | queue_audio -> dvbaudiosink
 188                                                    | queue_video -> dvbvideosink */
 189
 190                 audio = gst_element_factory_make("dvbaudiosink", "audio");
 191                 queue_audio = gst_element_factory_make("queue", "queue_audio");
 192
 193                 video = gst_element_factory_make("dvbvideosink", "video");
 194                 queue_video = gst_element_factory_make("queue", "queue_video");
 195
 196                 if (is_mpeg_ps)
 197                         mpegdemux = gst_element_factory_make("flupsdemux", "mpegdemux");
 198                 else
 199                         mpegdemux = gst_element_factory_make("flutsdemux", "mpegdemux");
 200
 201                 if (!mpegdemux)
 202                 {
 203                         eDebug("fluendo mpegdemux not available, falling back to mpegdemux\n");
 204                         mpegdemux = gst_element_factory_make("mpegdemux", "mpegdemux");
 205                 }
 206
 207                 eDebug("audio: %p, queue_audio %p, video %p, queue_video %p, mpegdemux %p", audio, queue_audio, video, queue_video, mpegdemux);
 208                 if (audio && queue_audio && video && queue_video && mpegdemux)
 209                         all_ok = 1;
 210         }
 211
 212         if (m_gst_pipeline && all_ok)
 213         {
 214                 gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
 215
 216                 if (use_decodebin)
 217                 {
 218                         g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
 219                         g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
 220
 221                                 /* gst_bin will take the 'floating references' */
 222                         gst_bin_add_many (GST_BIN (m_gst_pipeline),
 223                                                 source, decoder, NULL);
 224                         gst_element_link(source, decoder);
 225
 226                         /* create audio bin */
 227                         m_gst_audio = gst_bin_new ("audiobin");
 228                         GstPad *audiopad = gst_element_get_pad (conv, "sink");
 229
 230                         gst_bin_add_many(GST_BIN(m_gst_audio), conv, flt, sink, (char*)0);
 231                         gst_element_link_many(conv, flt, sink, (char*)0);
 232                         gst_element_add_pad(m_gst_audio, gst_ghost_pad_new ("sink", audiopad));
 233                         gst_object_unref(audiopad);
 234                         gst_bin_add (GST_BIN(m_gst_pipeline), m_gst_audio);
 235                 } else
 236                 {
 237                         gst_bin_add_many(GST_BIN(m_gst_pipeline), source, mpegdemux, audio, queue_audio, video, queue_video, NULL);
 238                         gst_element_link(source, mpegdemux);
 239                         gst_element_link(queue_audio, audio);
 240                         gst_element_link(queue_video, video);
 241
 242                         m_gst_audioqueue = queue_audio;
 243                         m_gst_videoqueue = queue_video;
 244
 245                         g_signal_connect(mpegdemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 246                 }
 247         } else
 248         {
 249                 if (m_gst_pipeline)
 250                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 251                 if (source)
 252                         gst_object_unref(GST_OBJECT(source));
 253                 if (decoder)
 254                         gst_object_unref(GST_OBJECT(decoder));
 255                 if (conv)
 256                         gst_object_unref(GST_OBJECT(conv));
 257                 if (sink)
 258                         gst_object_unref(GST_OBJECT(sink));
 259
 260                 if (audio)
 261                         gst_object_unref(GST_OBJECT(audio));
 262                 if (queue_audio)
 263                         gst_object_unref(GST_OBJECT(queue_audio));
 264                 if (video)
 265                         gst_object_unref(GST_OBJECT(video));
 266                 if (queue_video)
 267                         gst_object_unref(GST_OBJECT(queue_video));
 268                 if (mpegdemux)
 269                         gst_object_unref(GST_OBJECT(mpegdemux));
 270
 271                 eDebug("sorry, can't play.");
 272                 m_gst_pipeline = 0;
 273         }
 274
 275         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 276 }
 277
 278 eServiceMP3::~eServiceMP3()
 279 {
 280         if (m_state == stRunning)
 281                 stop();
 282
 283         if (m_stream_tags)
 284                 gst_tag_list_free(m_stream_tags);
 285
 286         if (m_gst_pipeline)
 287         {
 288                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 289                 eDebug("SERVICEMP3 destruct!");
 290         }
 291 }
 292
 293 DEFINE_REF(eServiceMP3);
 294
 295 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 296 {
 297         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 298         return 0;
 299 }
 300
 301 RESULT eServiceMP3::start()
 302 {
 303         assert(m_state == stIdle);
 304
 305         m_state = stRunning;
 306         if (m_gst_pipeline)
 307         {
 308                 eDebug("starting pipeline");
 309                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 310         }
 311         m_event(this, evStart);
 312         return 0;
 313 }
 314
 315 RESULT eServiceMP3::stop()
 316 {
 317         assert(m_state != stIdle);
 318         if (m_state == stStopped)
 319                 return -1;
 320         printf("MP3: %s stop\n", m_filename.c_str());
 321         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 322         m_state = stStopped;
 323         return 0;
 324 }
 325
 326 RESULT eServiceMP3::setTarget(int target)
 327 {
 328         return -1;
 329 }
 330
 331 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 332 {
 333         ptr=this;
 334         return 0;
 335 }
 336
 337 RESULT eServiceMP3::setSlowMotion(int ratio)
 338 {
 339         return -1;
 340 }
 341
 342 RESULT eServiceMP3::setFastForward(int ratio)
 343 {
 344         return -1;
 345 }
 346
 347                 // iPausableService
 348 RESULT eServiceMP3::pause()
 349 {
 350         if (!m_gst_pipeline)
 351                 return -1;
 352         gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 353         return 0;
 354 }
 355
 356 RESULT eServiceMP3::unpause()
 357 {
 358         if (!m_gst_pipeline)
 359                 return -1;
 360         gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 361         return 0;
 362 }
 363
 364         /* iSeekableService */
 365 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 366 {
 367         ptr = this;
 368         return 0;
 369 }
 370
 371 RESULT eServiceMP3::getLength(pts_t &pts)
 372 {
 373         if (!m_gst_pipeline)
 374                 return -1;
 375         if (m_state != stRunning)
 376                 return -1;
 377
 378         GstFormat fmt = GST_FORMAT_TIME;
 379         gint64 len;
 380
 381         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 382                 return -1;
 383
 384                 /* len is in nanoseconds. we have 90 000 pts per second. */
 385
 386         pts = len / 11111;
 387         return 0;
 388 }
 389
 390 RESULT eServiceMP3::seekTo(pts_t to)
 391 {
 392         if (!m_gst_pipeline)
 393                 return -1;
 394
 395                 /* convert pts to nanoseconds */
 396         gint64 time_nanoseconds = to * 11111LL;
 397         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 398                 GST_SEEK_TYPE_SET, time_nanoseconds,
 399                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 400         {
 401                 eDebug("SEEK failed");
 402                 return -1;
 403         }
 404         return 0;
 405 }
 406
 407 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 408 {
 409         if (!m_gst_pipeline)
 410                 return -1;
 411
 412         pause();
 413
 414         pts_t ppos;
 415         getPlayPosition(ppos);
 416         ppos += to * direction;
 417         if (ppos < 0)
 418                 ppos = 0;
 419         seekTo(ppos);
 420
 421         unpause();
 422
 423         return 0;
 424 }
 425
 426 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 427 {
 428         if (!m_gst_pipeline)
 429                 return -1;
 430         if (m_state != stRunning)
 431                 return -1;
 432
 433         GstFormat fmt = GST_FORMAT_TIME;
 434         gint64 len;
 435
 436         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 437                 return -1;
 438
 439                 /* len is in nanoseconds. we have 90 000 pts per second. */
 440         pts = len / 11111;
 441         return 0;
 442 }
 443
 444 RESULT eServiceMP3::setTrickmode(int trick)
 445 {
 446                 /* trickmode currently doesn't make any sense for us. */
 447         return -1;
 448 }
 449
 450 RESULT eServiceMP3::isCurrentlySeekable()
 451 {
 452         return 1;
 453 }
 454
 455 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 456 {
 457         i = this;
 458         return 0;
 459 }
 460
 461 RESULT eServiceMP3::getName(std::string &name)
 462 {
 463         name = "MP3 File: " + m_filename;
 464         return 0;
 465 }
 466
 467 int eServiceMP3::getInfo(int w)
 468 {
 469         switch (w)
 470         {
 471         case sTitle:
 472         case sArtist:
 473         case sAlbum:
 474         case sComment:
 475         case sTracknumber:
 476         case sGenre:
 477                 return resIsString;
 478
 479         default:
 480                 return resNA;
 481         }
 482 }
 483
 484 std::string eServiceMP3::getInfoString(int w)
 485 {
 486         gchar *tag = 0;
 487         switch (w)
 488         {
 489         case sTitle:
 490                 tag = GST_TAG_TITLE;
 491                 break;
 492         case sArtist:
 493                 tag = GST_TAG_ARTIST;
 494                 break;
 495         case sAlbum:
 496                 tag = GST_TAG_ALBUM;
 497                 break;
 498         case sComment:
 499                 tag = GST_TAG_COMMENT;
 500                 break;
 501         case sTracknumber:
 502                 tag = GST_TAG_TRACK_NUMBER;
 503                 break;
 504         case sGenre:
 505                 tag = GST_TAG_GENRE;
 506                 break;
 507         default:
 508                 return "";
 509         }
 510
 511         if (!m_stream_tags || !tag)
 512                 return "";
 513
 514         gchar *value;
 515
 516         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 517         {
 518                 std::string res = value;
 519                 g_free(value);
 520                 return res;
 521         }
 522
 523         return "";
 524 }
 525
 526
 527                 void foreach(const GstTagList *list, const gchar *tag, gpointer user_data)
 528                 {
 529                         if (tag)
 530                                 eDebug("Tag: %c%c%c%c", tag[0], tag[1], tag[2], tag[3]);
 531
 532                 }
 533
 534 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 535 {
 536         if (msg)
 537         {
 538                 gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 539                 eDebug("gst_message: %s", string);
 540                 g_free(string);
 541         }
 542
 543         switch (GST_MESSAGE_TYPE (msg))
 544         {
 545         case GST_MESSAGE_EOS:
 546                 m_event((iPlayableService*)this, evEOF);
 547                 break;
 548         case GST_MESSAGE_ERROR:
 549         {
 550                 gchar *debug;
 551                 GError *err;
 552                 gst_message_parse_error (msg, &err, &debug);
 553                 g_free (debug);
 554                 eWarning("Gstreamer error: %s", err->message);
 555                 g_error_free(err);
 556                         /* TODO: signal error condition to user */
 557                 break;
 558         }
 559         case GST_MESSAGE_TAG:
 560         {
 561                 GstTagList *tags, *result;
 562                 gst_message_parse_tag(msg, &tags);
 563
 564                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 565                 if (result)
 566                 {
 567                         if (m_stream_tags)
 568                                 gst_tag_list_free(m_stream_tags);
 569                         m_stream_tags = result;
 570                 }
 571                 gst_tag_list_free(tags);
 572                 break;
 573         }
 574         default:
 575                 break;
 576         }
 577 }
 578
 579 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
 580 {
 581         eServiceMP3 *_this = (eServiceMP3*)user_data;
 582         _this->m_pump.send(1);
 583                 /* wake */
 584         return GST_BUS_PASS;
 585 }
 586
 587 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
 588 {
 589         eServiceMP3 *_this = (eServiceMP3*)user_data;
 590
 591         gchar *name;
 592         name = gst_pad_get_name (pad);
 593         g_print ("A new pad %s was created\n", name);
 594         if (!strncmp(name, "audio_", 6)) // mpegdemux uses video_nn with n=0,1,.., flupsdemux uses stream id
 595                 gst_pad_link(pad, gst_element_get_pad (_this->m_gst_audioqueue, "sink"));
 596         if (!strncmp(name, "video_", 6))
 597                 gst_pad_link(pad, gst_element_get_pad (_this->m_gst_videoqueue, "sink"));
 598         g_free (name);
 599
 600 }
 601
 602 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
 603 {
 604         eServiceMP3 *_this = (eServiceMP3*)user_data;
 605         GstCaps *caps;
 606         GstStructure *str;
 607         GstPad *audiopad;
 608
 609         /* only link once */
 610         audiopad = gst_element_get_pad (_this->m_gst_audio, "sink");
 611         if (GST_PAD_IS_LINKED (audiopad)) {
 612                 eDebug("audio already linked!");
 613                 g_object_unref (audiopad);
 614                 return;
 615         }
 616
 617         /* check media type */
 618         caps = gst_pad_get_caps (pad);
 619         str = gst_caps_get_structure (caps, 0);
 620         eDebug("gst new pad! %s", gst_structure_get_name (str));
 621
 622         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
 623                 gst_caps_unref (caps);
 624                 gst_object_unref (audiopad);
 625                 return;
 626         }
 627
 628         gst_caps_unref (caps);
 629         gst_pad_link (pad, audiopad);
 630 }
 631
 632 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
 633 {
 634         eServiceMP3 *_this = (eServiceMP3*)user_data;
 635         GstStructure *str;
 636
 637         /* check media type */
 638         caps = gst_pad_get_caps (pad);
 639         str = gst_caps_get_structure (caps, 0);
 640         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
 641         gst_caps_unref (caps);
 642 }
 643
 644 void eServiceMP3::gstPoll(const int&)
 645 {
 646                 /* ok, we have a serious problem here. gstBusSyncHandler sends
 647                    us the wakup signal, but likely before it was posted.
 648                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
 649
 650                    I need to understand the API a bit more to make this work
 651                    proplerly. */
 652         usleep(1);
 653
 654         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
 655         GstMessage *message;
 656         while ((message = gst_bus_pop (bus)))
 657         {
 658                 gstBusCall(bus, message);
 659                 gst_message_unref (message);
 660         }
 661 }
 662
 663 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
 664 #else
 665 #warning gstreamer not available, not building media player
 666 #endif