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