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                         /* workaround for [3des]' driver bugs: */
 153                 if (flt)
 154                 {
 155                         GstCaps *caps = gst_caps_new_simple("audio/x-raw-int", "endianness", G_TYPE_INT, 4321, (char*)0);
 156                         g_object_set (G_OBJECT (flt), "caps", caps, (char*)0);
 157                         gst_caps_unref(caps);
 158                 }
 159
 160                 sink = gst_element_factory_make ("alsasink", "alsa-output");
 161                 if (!sink)
 162                         eWarning("failed to create osssink");
 163
 164                 if (source && decoder && conv && sink)
 165                         all_ok = 1;
 166         } else /* is_video */
 167         {
 168                         /* filesrc -> mpegdemux -> | queue_audio -> dvbaudiosink
 169                                                    | queue_video -> dvbvideosink */
 170
 171                 audio = gst_element_factory_make("dvbaudiosink", "audio");
 172                 queue_audio = gst_element_factory_make("queue", "queue_audio");
 173
 174                 video = gst_element_factory_make("dvbvideosink", "video");
 175                 queue_video = gst_element_factory_make("queue", "queue_video");
 176
 177                 mpegdemux = gst_element_factory_make("mpegdemux", "mpegdemux");
 178
 179                 eDebug("audio: %p, queue_audio %p, video %p, queue_video %p, mpegdemux %p", audio, queue_audio, video, queue_video, mpegdemux);
 180                 if (audio && queue_audio && video && queue_video && mpegdemux)
 181                         all_ok = 1;
 182         }
 183
 184         if (m_gst_pipeline && all_ok)
 185         {
 186                 gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
 187
 188                                 /* configure source */
 189                 g_object_set (G_OBJECT (source), "location", filename, NULL);
 190
 191                 if (use_decodebin)
 192                 {
 193                         g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
 194                         g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
 195
 196                                 /* gst_bin will take the 'floating references' */
 197                         gst_bin_add_many (GST_BIN (m_gst_pipeline),
 198                                                 source, decoder, NULL);
 199                         gst_element_link(source, decoder);
 200
 201                         /* create audio bin */
 202                         m_gst_audio = gst_bin_new ("audiobin");
 203                         GstPad *audiopad = gst_element_get_pad (conv, "sink");
 204
 205                         gst_bin_add_many(GST_BIN(m_gst_audio), conv, flt, sink, (char*)0);
 206                         gst_element_link_many(conv, flt, sink, (char*)0);
 207                         gst_element_add_pad(m_gst_audio, gst_ghost_pad_new ("sink", audiopad));
 208                         gst_object_unref(audiopad);
 209                         gst_bin_add (GST_BIN(m_gst_pipeline), m_gst_audio);
 210                 } else
 211                 {
 212                         gst_bin_add_many(GST_BIN(m_gst_pipeline), source, mpegdemux, audio, queue_audio, video, queue_video, mpegdemux, NULL);
 213                         gst_element_link(source, mpegdemux);
 214                         gst_element_link(queue_audio, audio);
 215                         gst_element_link(queue_video, video);
 216
 217                         m_gst_audioqueue = queue_audio;
 218                         m_gst_videoqueue = queue_video;
 219
 220                         g_signal_connect(mpegdemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 221                 }
 222         } else
 223         {
 224                 if (m_gst_pipeline)
 225                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 226                 if (source)
 227                         gst_object_unref(GST_OBJECT(source));
 228                 if (decoder)
 229                         gst_object_unref(GST_OBJECT(decoder));
 230                 if (conv)
 231                         gst_object_unref(GST_OBJECT(conv));
 232                 if (sink)
 233                         gst_object_unref(GST_OBJECT(sink));
 234
 235                 if (audio)
 236                         gst_object_unref(GST_OBJECT(audio));
 237                 if (queue_audio)
 238                         gst_object_unref(GST_OBJECT(queue_audio));
 239                 if (video)
 240                         gst_object_unref(GST_OBJECT(video));
 241                 if (queue_video)
 242                         gst_object_unref(GST_OBJECT(queue_video));
 243                 if (mpegdemux)
 244                         gst_object_unref(GST_OBJECT(mpegdemux));
 245
 246                 eDebug("sorry, can't play.");
 247                 m_gst_pipeline = 0;
 248         }
 249
 250         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 251 }
 252
 253 eServiceMP3::~eServiceMP3()
 254 {
 255         if (m_state == stRunning)
 256                 stop();
 257
 258         if (m_stream_tags)
 259                 gst_tag_list_free(m_stream_tags);
 260
 261         if (m_gst_pipeline)
 262         {
 263                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 264                 eDebug("SERVICEMP3 destruct!");
 265         }
 266 }
 267
 268 DEFINE_REF(eServiceMP3);
 269
 270 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 271 {
 272         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 273         return 0;
 274 }
 275
 276 RESULT eServiceMP3::start()
 277 {
 278         assert(m_state == stIdle);
 279
 280         m_state = stRunning;
 281         if (m_gst_pipeline)
 282         {
 283                 eDebug("starting pipeline");
 284                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 285         }
 286         m_event(this, evStart);
 287         return 0;
 288 }
 289
 290 RESULT eServiceMP3::stop()
 291 {
 292         assert(m_state != stIdle);
 293         if (m_state == stStopped)
 294                 return -1;
 295         printf("MP3: %s stop\n", m_filename.c_str());
 296         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 297         m_state = stStopped;
 298         return 0;
 299 }
 300
 301 RESULT eServiceMP3::setTarget(int target)
 302 {
 303         return -1;
 304 }
 305
 306 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 307 {
 308         ptr=this;
 309         return 0;
 310 }
 311
 312 RESULT eServiceMP3::setSlowMotion(int ratio)
 313 {
 314         return -1;
 315 }
 316
 317 RESULT eServiceMP3::setFastForward(int ratio)
 318 {
 319         return -1;
 320 }
 321
 322                 // iPausableService
 323 RESULT eServiceMP3::pause()
 324 {
 325         if (!m_gst_pipeline)
 326                 return -1;
 327         gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 328         return 0;
 329 }
 330
 331 RESULT eServiceMP3::unpause()
 332 {
 333         if (!m_gst_pipeline)
 334                 return -1;
 335         gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 336         return 0;
 337 }
 338
 339         /* iSeekableService */
 340 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 341 {
 342         ptr = this;
 343         return 0;
 344 }
 345
 346 RESULT eServiceMP3::getLength(pts_t &pts)
 347 {
 348         if (!m_gst_pipeline)
 349                 return -1;
 350         if (m_state != stRunning)
 351                 return -1;
 352
 353         GstFormat fmt = GST_FORMAT_TIME;
 354         gint64 len;
 355
 356         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 357                 return -1;
 358
 359                 /* len is in nanoseconds. we have 90 000 pts per second. */
 360
 361         pts = len / 11111;
 362         return 0;
 363 }
 364
 365 RESULT eServiceMP3::seekTo(pts_t to)
 366 {
 367         if (!m_gst_pipeline)
 368                 return -1;
 369
 370                 /* convert pts to nanoseconds */
 371         gint64 time_nanoseconds = to * 11111LL;
 372         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 373                 GST_SEEK_TYPE_SET, time_nanoseconds,
 374                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 375         {
 376                 eDebug("SEEK failed");
 377                 return -1;
 378         }
 379         return 0;
 380 }
 381
 382 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 383 {
 384         if (!m_gst_pipeline)
 385                 return -1;
 386
 387         pause();
 388
 389         pts_t ppos;
 390         getPlayPosition(ppos);
 391         ppos += to * direction;
 392         if (ppos < 0)
 393                 ppos = 0;
 394         seekTo(ppos);
 395
 396         unpause();
 397
 398         return 0;
 399 }
 400
 401 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 402 {
 403         if (!m_gst_pipeline)
 404                 return -1;
 405         if (m_state != stRunning)
 406                 return -1;
 407
 408         GstFormat fmt = GST_FORMAT_TIME;
 409         gint64 len;
 410
 411         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 412                 return -1;
 413
 414                 /* len is in nanoseconds. we have 90 000 pts per second. */
 415         pts = len / 11111;
 416         return 0;
 417 }
 418
 419 RESULT eServiceMP3::setTrickmode(int trick)
 420 {
 421                 /* trickmode currently doesn't make any sense for us. */
 422         return -1;
 423 }
 424
 425 RESULT eServiceMP3::isCurrentlySeekable()
 426 {
 427         return 1;
 428 }
 429
 430 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 431 {
 432         i = this;
 433         return 0;
 434 }
 435
 436 RESULT eServiceMP3::getName(std::string &name)
 437 {
 438         name = "MP3 File: " + m_filename;
 439         return 0;
 440 }
 441
 442 int eServiceMP3::getInfo(int w)
 443 {
 444         switch (w)
 445         {
 446         case sTitle:
 447         case sArtist:
 448         case sAlbum:
 449         case sComment:
 450         case sTracknumber:
 451         case sGenre:
 452                 return resIsString;
 453
 454         default:
 455                 return resNA;
 456         }
 457 }
 458
 459 std::string eServiceMP3::getInfoString(int w)
 460 {
 461         gchar *tag = 0;
 462         switch (w)
 463         {
 464         case sTitle:
 465                 tag = GST_TAG_TITLE;
 466                 break;
 467         case sArtist:
 468                 tag = GST_TAG_ARTIST;
 469                 break;
 470         case sAlbum:
 471                 tag = GST_TAG_ALBUM;
 472                 break;
 473         case sComment:
 474                 tag = GST_TAG_COMMENT;
 475                 break;
 476         case sTracknumber:
 477                 tag = GST_TAG_TRACK_NUMBER;
 478                 break;
 479         case sGenre:
 480                 tag = GST_TAG_GENRE;
 481                 break;
 482         default:
 483                 return "";
 484         }
 485
 486         if (!m_stream_tags || !tag)
 487                 return "";
 488
 489         gchar *value;
 490
 491         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 492         {
 493                 std::string res = value;
 494                 g_free(value);
 495                 return res;
 496         }
 497
 498         return "";
 499 }
 500
 501
 502                 void foreach(const GstTagList *list, const gchar *tag, gpointer user_data)
 503                 {
 504                         if (tag)
 505                                 eDebug("Tag: %c%c%c%c", tag[0], tag[1], tag[2], tag[3]);
 506
 507                 }
 508
 509 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 510 {
 511         gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 512         eDebug("gst_message: %s", string);
 513         g_free(string);
 514
 515
 516         switch (GST_MESSAGE_TYPE (msg))
 517         {
 518         case GST_MESSAGE_EOS:
 519                 m_event((iPlayableService*)this, evEOF);
 520                 break;
 521         case GST_MESSAGE_ERROR:
 522         {
 523                 gchar *debug;
 524                 GError *err;
 525                 gst_message_parse_error (msg, &err, &debug);
 526                 g_free (debug);
 527                 eWarning("Gstreamer error: %s", err->message);
 528                 g_error_free(err);
 529                         /* TODO: signal error condition to user */
 530                 break;
 531         }
 532         case GST_MESSAGE_TAG:
 533         {
 534                 GstTagList *tags, *result;
 535                 gst_message_parse_tag(msg, &tags);
 536
 537                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 538                 if (result)
 539                 {
 540                         if (m_stream_tags)
 541                                 gst_tag_list_free(m_stream_tags);
 542                         m_stream_tags = result;
 543                 }
 544                 gst_tag_list_free(tags);
 545                 break;
 546         }
 547         default:
 548                 break;
 549         }
 550 }
 551
 552 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
 553 {
 554         eServiceMP3 *_this = (eServiceMP3*)user_data;
 555         _this->m_pump.send(1);
 556                 /* wake */
 557         return GST_BUS_PASS;
 558 }
 559
 560 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
 561 {
 562         eServiceMP3 *_this = (eServiceMP3*)user_data;
 563
 564         gchar *name;
 565         name = gst_pad_get_name (pad);
 566         g_print ("A new pad %s was created\n", name);
 567         if (!strcmp(name, "audio_00"))
 568                 gst_pad_link(pad, gst_element_get_pad (_this->m_gst_audioqueue, "sink"));
 569         if (!strcmp(name, "video_00"))
 570                 gst_pad_link(pad, gst_element_get_pad (_this->m_gst_videoqueue, "sink"));
 571         g_free (name);
 572
 573 }
 574
 575 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
 576 {
 577         eServiceMP3 *_this = (eServiceMP3*)user_data;
 578         GstCaps *caps;
 579         GstStructure *str;
 580         GstPad *audiopad;
 581
 582         /* only link once */
 583         audiopad = gst_element_get_pad (_this->m_gst_audio, "sink");
 584         if (GST_PAD_IS_LINKED (audiopad)) {
 585                 eDebug("audio already linked!");
 586                 g_object_unref (audiopad);
 587                 return;
 588         }
 589
 590         /* check media type */
 591         caps = gst_pad_get_caps (pad);
 592         str = gst_caps_get_structure (caps, 0);
 593         eDebug("gst new pad! %s", gst_structure_get_name (str));
 594
 595         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
 596                 gst_caps_unref (caps);
 597                 gst_object_unref (audiopad);
 598                 return;
 599         }
 600
 601         gst_caps_unref (caps);
 602         gst_pad_link (pad, audiopad);
 603 }
 604
 605 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
 606 {
 607         eServiceMP3 *_this = (eServiceMP3*)user_data;
 608         GstStructure *str;
 609
 610         /* check media type */
 611         caps = gst_pad_get_caps (pad);
 612         str = gst_caps_get_structure (caps, 0);
 613         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
 614         gst_caps_unref (caps);
 615 }
 616
 617 void eServiceMP3::gstPoll(const int&)
 618 {
 619                 /* ok, we have a serious problem here. gstBusSyncHandler sends
 620                    us the wakup signal, but likely before it was posted.
 621                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
 622
 623                    I need to understand the API a bit more to make this work
 624                    proplerly. */
 625         usleep(1);
 626
 627         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
 628         GstMessage *message;
 629         while ((message = gst_bus_pop (bus)))
 630         {
 631                 gstBusCall(bus, message);
 632                 gst_message_unref (message);
 633         }
 634 }
 635
 636 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
 637 #else
 638 #warning gstreamer not available, not building media player
 639 #endif