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                 {
 210                         g_object_set (G_OBJECT (queue_audio), "max-size-buffers", 0, NULL);
 211                         g_object_set (G_OBJECT (queue_audio), "max-size-time", (guint64)0, NULL);
 212                         g_object_set (G_OBJECT (queue_video), "max-size-buffers", 0, NULL);
 213                         g_object_set (G_OBJECT (queue_video), "max-size-time", (guint64)0, NULL);
 214                         all_ok = 1;
 215                 }
 216         }
 217
 218         if (m_gst_pipeline && all_ok)
 219         {
 220                 gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
 221
 222                 if (use_decodebin)
 223                 {
 224                         g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
 225                         g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
 226
 227                                 /* gst_bin will take the 'floating references' */
 228                         gst_bin_add_many (GST_BIN (m_gst_pipeline),
 229                                                 source, decoder, NULL);
 230                         gst_element_link(source, decoder);
 231
 232                         /* create audio bin */
 233                         m_gst_audio = gst_bin_new ("audiobin");
 234                         GstPad *audiopad = gst_element_get_pad (conv, "sink");
 235
 236                         gst_bin_add_many(GST_BIN(m_gst_audio), conv, flt, sink, (char*)0);
 237                         gst_element_link_many(conv, flt, sink, (char*)0);
 238                         gst_element_add_pad(m_gst_audio, gst_ghost_pad_new ("sink", audiopad));
 239                         gst_object_unref(audiopad);
 240                         gst_bin_add (GST_BIN(m_gst_pipeline), m_gst_audio);
 241                 } else
 242                 {
 243                         gst_bin_add_many(GST_BIN(m_gst_pipeline), source, mpegdemux, audio, queue_audio, video, queue_video, NULL);
 244                         gst_element_link(source, mpegdemux);
 245                         gst_element_link(queue_audio, audio);
 246                         gst_element_link(queue_video, video);
 247
 248                         m_gst_audioqueue = queue_audio;
 249                         m_gst_videoqueue = queue_video;
 250
 251                         g_signal_connect(mpegdemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
 252                 }
 253         } else
 254         {
 255                 if (m_gst_pipeline)
 256                         gst_object_unref(GST_OBJECT(m_gst_pipeline));
 257                 if (source)
 258                         gst_object_unref(GST_OBJECT(source));
 259                 if (decoder)
 260                         gst_object_unref(GST_OBJECT(decoder));
 261                 if (conv)
 262                         gst_object_unref(GST_OBJECT(conv));
 263                 if (sink)
 264                         gst_object_unref(GST_OBJECT(sink));
 265
 266                 if (audio)
 267                         gst_object_unref(GST_OBJECT(audio));
 268                 if (queue_audio)
 269                         gst_object_unref(GST_OBJECT(queue_audio));
 270                 if (video)
 271                         gst_object_unref(GST_OBJECT(video));
 272                 if (queue_video)
 273                         gst_object_unref(GST_OBJECT(queue_video));
 274                 if (mpegdemux)
 275                         gst_object_unref(GST_OBJECT(mpegdemux));
 276
 277                 eDebug("sorry, can't play.");
 278                 m_gst_pipeline = 0;
 279         }
 280
 281         gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 282 }
 283
 284 eServiceMP3::~eServiceMP3()
 285 {
 286         if (m_state == stRunning)
 287                 stop();
 288
 289         if (m_stream_tags)
 290                 gst_tag_list_free(m_stream_tags);
 291
 292         if (m_gst_pipeline)
 293         {
 294                 gst_object_unref (GST_OBJECT (m_gst_pipeline));
 295                 eDebug("SERVICEMP3 destruct!");
 296         }
 297 }
 298
 299 DEFINE_REF(eServiceMP3);
 300
 301 RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
 302 {
 303         connection = new eConnection((iPlayableService*)this, m_event.connect(event));
 304         return 0;
 305 }
 306
 307 RESULT eServiceMP3::start()
 308 {
 309         assert(m_state == stIdle);
 310
 311         m_state = stRunning;
 312         if (m_gst_pipeline)
 313         {
 314                 eDebug("starting pipeline");
 315                 gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 316         }
 317         m_event(this, evStart);
 318         return 0;
 319 }
 320
 321 RESULT eServiceMP3::stop()
 322 {
 323         assert(m_state != stIdle);
 324         if (m_state == stStopped)
 325                 return -1;
 326         printf("MP3: %s stop\n", m_filename.c_str());
 327         gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
 328         m_state = stStopped;
 329         return 0;
 330 }
 331
 332 RESULT eServiceMP3::setTarget(int target)
 333 {
 334         return -1;
 335 }
 336
 337 RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 338 {
 339         ptr=this;
 340         return 0;
 341 }
 342
 343 RESULT eServiceMP3::setSlowMotion(int ratio)
 344 {
 345         return -1;
 346 }
 347
 348 RESULT eServiceMP3::setFastForward(int ratio)
 349 {
 350         return -1;
 351 }
 352
 353                 // iPausableService
 354 RESULT eServiceMP3::pause()
 355 {
 356         if (!m_gst_pipeline)
 357                 return -1;
 358         gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
 359         return 0;
 360 }
 361
 362 RESULT eServiceMP3::unpause()
 363 {
 364         if (!m_gst_pipeline)
 365                 return -1;
 366         gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
 367         return 0;
 368 }
 369
 370         /* iSeekableService */
 371 RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
 372 {
 373         ptr = this;
 374         return 0;
 375 }
 376
 377 RESULT eServiceMP3::getLength(pts_t &pts)
 378 {
 379         if (!m_gst_pipeline)
 380                 return -1;
 381         if (m_state != stRunning)
 382                 return -1;
 383
 384         GstFormat fmt = GST_FORMAT_TIME;
 385         gint64 len;
 386
 387         if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
 388                 return -1;
 389
 390                 /* len is in nanoseconds. we have 90 000 pts per second. */
 391
 392         pts = len / 11111;
 393         return 0;
 394 }
 395
 396 RESULT eServiceMP3::seekTo(pts_t to)
 397 {
 398         if (!m_gst_pipeline)
 399                 return -1;
 400
 401                 /* convert pts to nanoseconds */
 402         gint64 time_nanoseconds = to * 11111LL;
 403         if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
 404                 GST_SEEK_TYPE_SET, time_nanoseconds,
 405                 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
 406         {
 407                 eDebug("SEEK failed");
 408                 return -1;
 409         }
 410         return 0;
 411 }
 412
 413 RESULT eServiceMP3::seekRelative(int direction, pts_t to)
 414 {
 415         if (!m_gst_pipeline)
 416                 return -1;
 417
 418         pause();
 419
 420         pts_t ppos;
 421         getPlayPosition(ppos);
 422         ppos += to * direction;
 423         if (ppos < 0)
 424                 ppos = 0;
 425         seekTo(ppos);
 426
 427         unpause();
 428
 429         return 0;
 430 }
 431
 432 RESULT eServiceMP3::getPlayPosition(pts_t &pts)
 433 {
 434         if (!m_gst_pipeline)
 435                 return -1;
 436         if (m_state != stRunning)
 437                 return -1;
 438
 439         GstFormat fmt = GST_FORMAT_TIME;
 440         gint64 len;
 441
 442         if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
 443                 return -1;
 444
 445                 /* len is in nanoseconds. we have 90 000 pts per second. */
 446         pts = len / 11111;
 447         return 0;
 448 }
 449
 450 RESULT eServiceMP3::setTrickmode(int trick)
 451 {
 452                 /* trickmode currently doesn't make any sense for us. */
 453         return -1;
 454 }
 455
 456 RESULT eServiceMP3::isCurrentlySeekable()
 457 {
 458         return 1;
 459 }
 460
 461 RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
 462 {
 463         i = this;
 464         return 0;
 465 }
 466
 467 RESULT eServiceMP3::getName(std::string &name)
 468 {
 469         name = "MP3 File: " + m_filename;
 470         return 0;
 471 }
 472
 473 int eServiceMP3::getInfo(int w)
 474 {
 475         switch (w)
 476         {
 477         case sTitle:
 478         case sArtist:
 479         case sAlbum:
 480         case sComment:
 481         case sTracknumber:
 482         case sGenre:
 483                 return resIsString;
 484
 485         default:
 486                 return resNA;
 487         }
 488 }
 489
 490 std::string eServiceMP3::getInfoString(int w)
 491 {
 492         gchar *tag = 0;
 493         switch (w)
 494         {
 495         case sTitle:
 496                 tag = GST_TAG_TITLE;
 497                 break;
 498         case sArtist:
 499                 tag = GST_TAG_ARTIST;
 500                 break;
 501         case sAlbum:
 502                 tag = GST_TAG_ALBUM;
 503                 break;
 504         case sComment:
 505                 tag = GST_TAG_COMMENT;
 506                 break;
 507         case sTracknumber:
 508                 tag = GST_TAG_TRACK_NUMBER;
 509                 break;
 510         case sGenre:
 511                 tag = GST_TAG_GENRE;
 512                 break;
 513         default:
 514                 return "";
 515         }
 516
 517         if (!m_stream_tags || !tag)
 518                 return "";
 519
 520         gchar *value;
 521
 522         if (gst_tag_list_get_string(m_stream_tags, tag, &value))
 523         {
 524                 std::string res = value;
 525                 g_free(value);
 526                 return res;
 527         }
 528
 529         return "";
 530 }
 531
 532
 533                 void foreach(const GstTagList *list, const gchar *tag, gpointer user_data)
 534                 {
 535                         if (tag)
 536                                 eDebug("Tag: %c%c%c%c", tag[0], tag[1], tag[2], tag[3]);
 537
 538                 }
 539
 540 void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
 541 {
 542         if (msg)
 543         {
 544                 gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
 545                 eDebug("gst_message: %s", string);
 546                 g_free(string);
 547         }
 548
 549         switch (GST_MESSAGE_TYPE (msg))
 550         {
 551         case GST_MESSAGE_EOS:
 552                 m_event((iPlayableService*)this, evEOF);
 553                 break;
 554         case GST_MESSAGE_ERROR:
 555         {
 556                 gchar *debug;
 557                 GError *err;
 558                 gst_message_parse_error (msg, &err, &debug);
 559                 g_free (debug);
 560                 eWarning("Gstreamer error: %s", err->message);
 561                 g_error_free(err);
 562                         /* TODO: signal error condition to user */
 563                 break;
 564         }
 565         case GST_MESSAGE_TAG:
 566         {
 567                 GstTagList *tags, *result;
 568                 gst_message_parse_tag(msg, &tags);
 569
 570                 result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
 571                 if (result)
 572                 {
 573                         if (m_stream_tags)
 574                                 gst_tag_list_free(m_stream_tags);
 575                         m_stream_tags = result;
 576                 }
 577                 gst_tag_list_free(tags);
 578                 break;
 579         }
 580         default:
 581                 break;
 582         }
 583 }
 584
 585 GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
 586 {
 587         eServiceMP3 *_this = (eServiceMP3*)user_data;
 588         _this->m_pump.send(1);
 589                 /* wake */
 590         return GST_BUS_PASS;
 591 }
 592
 593 void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
 594 {
 595         eServiceMP3 *_this = (eServiceMP3*)user_data;
 596
 597         gchar *name;
 598         name = gst_pad_get_name (pad);
 599         g_print ("A new pad %s was created\n", name);
 600         if (!strncmp(name, "audio_", 6)) // mpegdemux uses video_nn with n=0,1,.., flupsdemux uses stream id
 601                 gst_pad_link(pad, gst_element_get_pad (_this->m_gst_audioqueue, "sink"));
 602         if (!strncmp(name, "video_", 6))
 603                 gst_pad_link(pad, gst_element_get_pad (_this->m_gst_videoqueue, "sink"));
 604         g_free (name);
 605
 606 }
 607
 608 void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
 609 {
 610         eServiceMP3 *_this = (eServiceMP3*)user_data;
 611         GstCaps *caps;
 612         GstStructure *str;
 613         GstPad *audiopad;
 614
 615         /* only link once */
 616         audiopad = gst_element_get_pad (_this->m_gst_audio, "sink");
 617         if (GST_PAD_IS_LINKED (audiopad)) {
 618                 eDebug("audio already linked!");
 619                 g_object_unref (audiopad);
 620                 return;
 621         }
 622
 623         /* check media type */
 624         caps = gst_pad_get_caps (pad);
 625         str = gst_caps_get_structure (caps, 0);
 626         eDebug("gst new pad! %s", gst_structure_get_name (str));
 627
 628         if (!g_strrstr (gst_structure_get_name (str), "audio")) {
 629                 gst_caps_unref (caps);
 630                 gst_object_unref (audiopad);
 631                 return;
 632         }
 633
 634         gst_caps_unref (caps);
 635         gst_pad_link (pad, audiopad);
 636 }
 637
 638 void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
 639 {
 640         eServiceMP3 *_this = (eServiceMP3*)user_data;
 641         GstStructure *str;
 642
 643         /* check media type */
 644         caps = gst_pad_get_caps (pad);
 645         str = gst_caps_get_structure (caps, 0);
 646         eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
 647         gst_caps_unref (caps);
 648 }
 649
 650 void eServiceMP3::gstPoll(const int&)
 651 {
 652                 /* ok, we have a serious problem here. gstBusSyncHandler sends
 653                    us the wakup signal, but likely before it was posted.
 654                    the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
 655
 656                    I need to understand the API a bit more to make this work
 657                    proplerly. */
 658         usleep(1);
 659
 660         GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
 661         GstMessage *message;
 662         while ((message = gst_bus_pop (bus)))
 663         {
 664                 gstBusCall(bus, message);
 665                 gst_message_unref (message);
 666         }
 667 }
 668
 669 eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
 670 #else
 671 #warning gstreamer not available, not building media player
 672 #endif