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
 119                 /* FIXME: currently, decodebin isn't possible for
 120                    video streams. in that case, make a manual pipeline. */
 121
 122         int is_video = !!strstr(filename, "mpg"); /* fixme */
 123
 124         int use_decodebin = !is_video;
 125
 126         int all_ok = 0;
 127
 128         m_gst_pipeline = gst_pipeline_new ("audio-player");
 129         if (!m_gst_pipeline)
 130                 eWarning("failed to create pipeline");
 131
 132         source = gst_element_factory_make ("filesrc", "file-source");
 133         if (!source)
 134                 eWarning("failed to create filesrc");
 135
 136         if (use_decodebin)
 137         {
 138                         /* filesrc -> decodebin -> audioconvert -> capsfilter -> alsasink */
 139
 140                 decoder = gst_element_factory_make ("decodebin", "decoder");
 141                 if (!decoder)
 142                         eWarning("failed to create decodebin decoder");
 143
 144                 conv = gst_element_factory_make ("audioconvert", "converter");
 145                 if (!conv)
 146                         eWarning("failed to create audioconvert");
 147
 148                 flt = gst_element_factory_make ("capsfilter", "flt");
 149                 if (!flt)
 150                         eWarning("failed to create capsfilter");
 151
 152                         /* for some reasons, we need to set the sample format to depth/width=16, because auto negotiation doesn't work. */
 153                         /* endianness, however, is not required to be set anymore. */
 154                 if (flt)
 155                 {
 156                         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, (char*)0);
 157                         g_object_set (G_OBJECT (flt), "caps", caps, (char*)0);
 158                         gst_caps_unref(caps);
 159                 }
 160
 161                 sink = gst_element_factory_make ("alsasink", "alsa-output");
 162                 if (!sink)
 163                         eWarning("failed to create osssink");
 164
 165                 if (source && decoder && conv && sink)
 166                         all_ok = 1;
 167         } else /* is_video */
 168         {
 169                         /* filesrc -> mpegdemux -> | queue_audio -> dvbaudiosink
 170                                                    | queue_video -> dvbvideosink */
 171
 172                 audio = gst_element_factory_make("dvbaudiosink", "audio");
 173                 queue_audio = gst_element_factory_make("queue", "queue_audio");
 174
 175                 video = gst_element_factory_make("dvbvideosink", "video");
 176                 queue_video = gst_element_factory_make("queue", "queue_video");
 177
 178                 mpegdemux = gst_element_factory_make("mpegdemux", "mpegdemux");
 179
 180                 eDebug("audio: %p, queue_audio %p, video %p, queue_video %p, mpegdemux %p", audio, queue_audio, video, queue_video, mpegdemux);
 181                 if (audio && queue_audio && video && queue_video && mpegdemux)
 182                         all_ok = 1;
 183         }
 184
 185         if (m_gst_pipeline && all_ok)
 186         {
 187                 gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
 188
 189                                 /* configure source */
 190                 g_object_set (G_OBJECT (source), "location", filename, NULL);
 191
 192                 if (use_decodebin)
 193                 {
 194                         g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
 195                         g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
 196
 197                                 /* gst_bin will take the 'floating references' */
 198                         gst_bin_add_many (GST_BIN (m_gst_pipeline),
 199                                                 source, decoder, NULL);
 200                         gst_element_link(source, decoder);
 201
 202                         /* create audio bin */
 203                         m_gst_audio = gst_bin_new ("audiobin");
 204                         GstPad *audiopad = gst_element_get_pad (conv, "sink");
 205
 206                         gst_bin_add_many(GST_BIN(m_gst_audio), conv, flt, sink, (char*)0);
 207                         gst_element_link_many(conv, flt, sink, (char*)0);
 208                         gst_element_add_pad(m_gst_audio, gst_ghost_pad_new ("sink", audiopad));
 209                         gst_object_unref(audiopad);
 210                         gst_bin_add (GST_BIN(m_gst_pipeline), m_gst_audio);
 211                 } else
 212                 {
 213                         gst_bin_add_many(GST_BIN(m_gst_pipeline), source, mpegdemux, audio, queue_audio, video, queue_video, NULL);
 214                         gst_element_link(source, mpegdemux);
 215                         gst_element_link(queue_audio, audio);
 216                         gst_element_link(queue_video, video);
 217
 218                         m_gst_audioqueue = queue_audio;
 219                         m_gst_videoqueue = queue_video;
 220
 221                         g_signal_connect(mpegdemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 222                 }
 223         } else
 224         {
 225                 if (m_gst_pipeline)
 226                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 227                 if (source)
 228                         gst_object_unref(GST_OBJECT(source));
 229                 if (decoder)
 230                         gst_object_unref(GST_OBJECT(decoder));
 231                 if (conv)
 232                         gst_object_unref(GST_OBJECT(conv));
 233                 if (sink)
 234                         gst_object_unref(GST_OBJECT(sink));
 235
 236                 if (audio)
 237                         gst_object_unref(GST_OBJECT(audio));
 238                 if (queue_audio)
 239                         gst_object_unref(GST_OBJECT(queue_audio));
 240                 if (video)
 241                         gst_object_unref(GST_OBJECT(video));
 242                 if (queue_video)
 243                         gst_object_unref(GST_OBJECT(queue_video));
 244                 if (mpegdemux)
 245                         gst_object_unref(GST_OBJECT(mpegdemux));
 246
 247                 eDebug("sorry, can't play.");
 248                 m_gst_pipeline = 0;
 249         }
 250
 251         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 252 }
 253
 254 eServiceMP3::~eServiceMP3()
 255 {
 256         if (m_state == stRunning)
 257                 stop();
 258
 259         if (m_stream_tags)
 260                 gst_tag_list_free(m_stream_tags);
 261
 262         if (m_gst_pipeline)
 263         {
 264                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 265                 eDebug("SERVICEMP3 destruct!");
 266         }
 267 }
 268
 269 DEFINE_REF(eServiceMP3);
 270
 271 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 272 {
 273         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 274         return 0;
 275 }
 276
 277 RESULT eServiceMP3::start()
 278 {
 279         assert(m_state == stIdle);
 280
 281         m_state = stRunning;
 282         if (m_gst_pipeline)
 283         {
 284                 eDebug("starting pipeline");
 285                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 286         }
 287         m_event(this, evStart);
 288         return 0;
 289 }
 290
 291 RESULT eServiceMP3::stop()
 292 {
 293         assert(m_state != stIdle);
 294         if (m_state == stStopped)
 295                 return -1;
 296         printf("MP3: %s stop\n", m_filename.c_str());
 297         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 298         m_state = stStopped;
 299         return 0;
 300 }
 301
 302 RESULT eServiceMP3::setTarget(int target)
 303 {
 304         return -1;
 305 }
 306
 307 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 308 {
 309         ptr=this;
 310         return 0;
 311 }
 312
 313 RESULT eServiceMP3::setSlowMotion(int ratio)
 314 {
 315         return -1;
 316 }
 317
 318 RESULT eServiceMP3::setFastForward(int ratio)
 319 {
 320         return -1;
 321 }
 322
 323                 // iPausableService
 324 RESULT eServiceMP3::pause()
 325 {
 326         if (!m_gst_pipeline)
 327                 return -1;
 328         gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 329         return 0;
 330 }
 331
 332 RESULT eServiceMP3::unpause()
 333 {
 334         if (!m_gst_pipeline)
 335                 return -1;
 336         gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 337         return 0;
 338 }
 339
 340         /* iSeekableService */
 341 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 342 {
 343         ptr = this;
 344         return 0;
 345 }
 346
 347 RESULT eServiceMP3::getLength(pts_t &pts)
 348 {
 349         if (!m_gst_pipeline)
 350                 return -1;
 351         if (m_state != stRunning)
 352                 return -1;
 353
 354         GstFormat fmt = GST_FORMAT_TIME;
 355         gint64 len;
 356
 357         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 358                 return -1;
 359
 360                 /* len is in nanoseconds. we have 90 000 pts per second. */
 361
 362         pts = len / 11111;
 363         return 0;
 364 }
 365
 366 RESULT eServiceMP3::seekTo(pts_t to)
 367 {
 368         if (!m_gst_pipeline)
 369                 return -1;
 370
 371                 /* convert pts to nanoseconds */
 372         gint64 time_nanoseconds = to * 11111LL;
 373         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 374                 GST_SEEK_TYPE_SET, time_nanoseconds,
 375                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 376         {
 377                 eDebug("SEEK failed");
 378                 return -1;
 379         }
 380         return 0;
 381 }
 382
 383 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 384 {
 385         if (!m_gst_pipeline)
 386                 return -1;
 387
 388         pause();
 389
 390         pts_t ppos;
 391         getPlayPosition(ppos);
 392         ppos += to * direction;
 393         if (ppos < 0)
 394                 ppos = 0;
 395         seekTo(ppos);
 396
 397         unpause();
 398
 399         return 0;
 400 }
 401
 402 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 403 {
 404         if (!m_gst_pipeline)
 405                 return -1;
 406         if (m_state != stRunning)
 407                 return -1;
 408
 409         GstFormat fmt = GST_FORMAT_TIME;
 410         gint64 len;
 411
 412         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 413                 return -1;
 414
 415                 /* len is in nanoseconds. we have 90 000 pts per second. */
 416         pts = len / 11111;
 417         return 0;
 418 }
 419
 420 RESULT eServiceMP3::setTrickmode(int trick)
 421 {
 422                 /* trickmode currently doesn't make any sense for us. */
 423         return -1;
 424 }
 425
 426 RESULT eServiceMP3::isCurrentlySeekable()
 427 {
 428         return 1;
 429 }
 430
 431 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 432 {
 433         i = this;
 434         return 0;
 435 }
 436
 437 RESULT eServiceMP3::getName(std::string &name)
 438 {
 439         name = "MP3 File: " + m_filename;
 440         return 0;
 441 }
 442
 443 int eServiceMP3::getInfo(int w)
 444 {
 445         switch (w)
 446         {
 447         case sTitle:
 448         case sArtist:
 449         case sAlbum:
 450         case sComment:
 451         case sTracknumber:
 452         case sGenre:
 453                 return resIsString;
 454
 455         default:
 456                 return resNA;
 457         }
 458 }
 459
 460 std::string eServiceMP3::getInfoString(int w)
 461 {
 462         gchar *tag = 0;
 463         switch (w)
 464         {
 465         case sTitle:
 466                 tag = GST_TAG_TITLE;
 467                 break;
 468         case sArtist:
 469                 tag = GST_TAG_ARTIST;
 470                 break;
 471         case sAlbum:
 472                 tag = GST_TAG_ALBUM;
 473                 break;
 474         case sComment:
 475                 tag = GST_TAG_COMMENT;
 476                 break;
 477         case sTracknumber:
 478                 tag = GST_TAG_TRACK_NUMBER;
 479                 break;
 480         case sGenre:
 481                 tag = GST_TAG_GENRE;
 482                 break;
 483         default:
 484                 return "";
 485         }
 486
 487         if (!m_stream_tags || !tag)
 488                 return "";
 489
 490         gchar *value;
 491
 492         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 493         {
 494                 std::string res = value;
 495                 g_free(value);
 496                 return res;
 497         }
 498
 499         return "";
 500 }
 501
 502
 503                 void foreach(const GstTagList *list, const gchar *tag, gpointer user_data)
 504                 {
 505                         if (tag)
 506                                 eDebug("Tag: %c%c%c%c", tag[0], tag[1], tag[2], tag[3]);
 507
 508                 }
 509
 510 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 511 {
 512         gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 513         eDebug("gst_message: %s", string);
 514         g_free(string);
 515
 516
 517         switch (GST_MESSAGE_TYPE (msg))
 518         {
 519         case GST_MESSAGE_EOS:
 520                 m_event((iPlayableService*)this, evEOF);
 521                 break;
 522         case GST_MESSAGE_ERROR:
 523         {
 524                 gchar *debug;
 525                 GError *err;
 526                 gst_message_parse_error (msg, &err, &debug);
 527                 g_free (debug);
 528                 eWarning("Gstreamer error: %s", err->message);
 529                 g_error_free(err);
 530                         /* TODO: signal error condition to user */
 531                 break;
 532         }
 533         case GST_MESSAGE_TAG:
 534         {
 535                 GstTagList *tags, *result;
 536                 gst_message_parse_tag(msg, &tags);
 537
 538                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 539                 if (result)
 540                 {
 541                         if (m_stream_tags)
 542                                 gst_tag_list_free(m_stream_tags);
 543                         m_stream_tags = result;
 544                 }
 545                 gst_tag_list_free(tags);
 546                 break;
 547         }
 548         default:
 549                 break;
 550         }
 551 }
 552
 553 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
 554 {
 555         eServiceMP3 *_this = (eServiceMP3*)user_data;
 556         _this->m_pump.send(1);
 557                 /* wake */
 558         return GST_BUS_PASS;
 559 }
 560
 561 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
 562 {
 563         eServiceMP3 *_this = (eServiceMP3*)user_data;
 564
 565         gchar *name;
 566         name = gst_pad_get_name (pad);
 567         g_print ("A new pad %s was created\n", name);
 568         if (!strcmp(name, "audio_00"))
 569                 gst_pad_link(pad, gst_element_get_pad (_this->m_gst_audioqueue, "sink"));
 570         if (!strcmp(name, "video_00"))
 571                 gst_pad_link(pad, gst_element_get_pad (_this->m_gst_videoqueue, "sink"));
 572         g_free (name);
 573
 574 }
 575
 576 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
 577 {
 578         eServiceMP3 *_this = (eServiceMP3*)user_data;
 579         GstCaps *caps;
 580         GstStructure *str;
 581         GstPad *audiopad;
 582
 583         /* only link once */
 584         audiopad = gst_element_get_pad (_this->m_gst_audio, "sink");
 585         if (GST_PAD_IS_LINKED (audiopad)) {
 586                 eDebug("audio already linked!");
 587                 g_object_unref (audiopad);
 588                 return;
 589         }
 590
 591         /* check media type */
 592         caps = gst_pad_get_caps (pad);
 593         str = gst_caps_get_structure (caps, 0);
 594         eDebug("gst new pad! %s", gst_structure_get_name (str));
 595
 596         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
 597                 gst_caps_unref (caps);
 598                 gst_object_unref (audiopad);
 599                 return;
 600         }
 601
 602         gst_caps_unref (caps);
 603         gst_pad_link (pad, audiopad);
 604 }
 605
 606 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
 607 {
 608         eServiceMP3 *_this = (eServiceMP3*)user_data;
 609         GstStructure *str;
 610
 611         /* check media type */
 612         caps = gst_pad_get_caps (pad);
 613         str = gst_caps_get_structure (caps, 0);
 614         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
 615         gst_caps_unref (caps);
 616 }
 617
 618 void eServiceMP3::gstPoll(const int&)
 619 {
 620                 /* ok, we have a serious problem here. gstBusSyncHandler sends
 621                    us the wakup signal, but likely before it was posted.
 622                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
 623
 624                    I need to understand the API a bit more to make this work
 625                    proplerly. */
 626         usleep(1);
 627
 628         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
 629         GstMessage *message;
 630         while ((message = gst_bus_pop (bus)))
 631         {
 632                 gstBusCall(bus, message);
 633                 gst_message_unref (message);
 634         }
 635 }
 636
 637 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
 638 #else
 639 #warning gstreamer not available, not building media player
 640 #endif