add seekTitle to iSeekableService interface
[enigma2.git] / lib / service / servicemp3.cpp
index fb5993e..f74cc8d 100644 (file)
@@ -1,27 +1,44 @@
+#ifdef HAVE_GSTREAMER
+
+       /* note: this requires gstreamer 0.10.x and a big list of plugins. */
+       /* it's currently hardcoded to use a big-endian alsasink as sink. */
 #include <lib/base/eerror.h>
 #include <lib/base/object.h>
+#include <lib/base/ebase.h>
 #include <string>
 #include <lib/service/servicemp3.h>
 #include <lib/service/service.h>
 #include <lib/base/init_num.h>
 #include <lib/base/init.h>
+#include <gst/gst.h>
 
 // eServiceFactoryMP3
 
-eServiceFactoryMP3::eServiceFactoryMP3(): ref(0)
+eServiceFactoryMP3::eServiceFactoryMP3()
 {
        ePtr<eServiceCenter> sc;
        
-       eServiceCenter::getInstance(sc);
+       eServiceCenter::getPrivInstance(sc);
        if (sc)
-               sc->addServiceFactory(eServiceFactoryMP3::id, this);
+       {
+               std::list<std::string> extensions;
+               extensions.push_back("mp3");
+               extensions.push_back("ogg");
+               extensions.push_back("mpg");
+               extensions.push_back("vob");
+               extensions.push_back("wav");
+               extensions.push_back("wave");
+               sc->addServiceFactory(eServiceFactoryMP3::id, this, extensions);
+       }
+
+       m_service_info = new eStaticServiceMP3Info();
 }
 
 eServiceFactoryMP3::~eServiceFactoryMP3()
 {
        ePtr<eServiceCenter> sc;
        
-       eServiceCenter::getInstance(sc);
+       eServiceCenter::getPrivInstance(sc);
        if (sc)
                sc->removeServiceFactory(eServiceFactoryMP3::id);
 }
@@ -31,15 +48,8 @@ DEFINE_REF(eServiceFactoryMP3)
        // iServiceHandler
 RESULT eServiceFactoryMP3::play(const eServiceReference &ref, ePtr<iPlayableService> &ptr)
 {
-       RESULT res;
                // check resources...
        ptr = new eServiceMP3(ref.path.c_str());
-       res = ptr->start();
-       if (res)
-       {
-               ptr = 0;
-               return res;
-       }
        return 0;
 }
 
@@ -55,35 +65,657 @@ RESULT eServiceFactoryMP3::list(const eServiceReference &, ePtr<iListableService
        return -1;
 }
 
+RESULT eServiceFactoryMP3::info(const eServiceReference &ref, ePtr<iStaticServiceInformation> &ptr)
+{
+       ptr = m_service_info;
+       return 0;
+}
+
+RESULT eServiceFactoryMP3::offlineOperations(const eServiceReference &, ePtr<iServiceOfflineOperations> &ptr)
+{
+       ptr = 0;
+       return -1;
+}
+
+
+// eStaticServiceMP3Info
+
+
+// eStaticServiceMP3Info is seperated from eServiceMP3 to give information
+// about unopened files.
+
+// probably eServiceMP3 should use this class as well, and eStaticServiceMP3Info
+// should have a database backend where ID3-files etc. are cached.
+// this would allow listing the mp3 database based on certain filters.
+
+DEFINE_REF(eStaticServiceMP3Info)
+
+eStaticServiceMP3Info::eStaticServiceMP3Info()
+{
+}
+
+RESULT eStaticServiceMP3Info::getName(const eServiceReference &ref, std::string &name)
+{
+       size_t last = ref.path.rfind('/');
+       if (last != std::string::npos)
+               name = ref.path.substr(last+1);
+       else
+               name = ref.path;
+       return 0;
+}
+
+int eStaticServiceMP3Info::getLength(const eServiceReference &ref)
+{
+       return -1;
+}
+
 // eServiceMP3
 
-eServiceMP3::eServiceMP3(const char *filename): filename(filename), ref(0)
+eServiceMP3::eServiceMP3(const char *filename): m_filename(filename), m_pump(eApp, 1)
 {
-       printf("MP3: %s start\n", filename);
+       m_stream_tags = 0;
+       CONNECT(m_pump.recv_msg, eServiceMP3::gstPoll);
+       GstElement *source = 0;
+       
+       GstElement *filter = 0, *decoder = 0, *conv = 0, *flt = 0, *sink = 0; /* for audio */
+       
+       GstElement *audio = 0, *queue_audio = 0, *video = 0, *queue_video = 0, *mpegdemux = 0;
+       
+       m_state = stIdle;
+       eDebug("SERVICEMP3 construct!");
+       
+               /* FIXME: currently, decodebin isn't possible for 
+                  video streams. in that case, make a manual pipeline. */
+
+       const char *ext = strrchr(filename, '.');
+       if (!ext)
+               ext = filename;
+
+       int is_mpeg_ps = !(strcasecmp(ext, ".mpeg") && strcasecmp(ext, ".mpg") && strcasecmp(ext, ".vob") && strcasecmp(ext, ".bin"));
+       int is_mpeg_ts = !strcasecmp(ext, ".ts");
+       int is_mp3 = !strcasecmp(ext, ".mp3"); /* force mp3 instead of decodebin */
+       int is_video = is_mpeg_ps || is_mpeg_ts;
+       int is_streaming = !strncmp(filename, "http://", 7);
+       
+       eDebug("filename: %s, is_mpeg_ps: %d, is_mpeg_ts: %d, is_video: %d, is_streaming: %d, is_mp3: %d", filename, is_mpeg_ps, is_mpeg_ts, is_video, is_streaming, is_mp3);
+       
+       int is_audio = !is_video;
+       
+       int all_ok = 0;
+
+       m_gst_pipeline = gst_pipeline_new ("audio-player");
+       if (!m_gst_pipeline)
+               eWarning("failed to create pipeline");
+
+       if (!is_streaming)
+               source = gst_element_factory_make ("filesrc", "file-source");
+       else
+       {
+               source = gst_element_factory_make ("neonhttpsrc", "http-source");
+               if (source)
+                       g_object_set (G_OBJECT (source), "automatic-redirect", TRUE, NULL);
+       }
+
+       if (!source)
+               eWarning("failed to create %s", is_streaming ? "neonhttpsrc" : "filesrc");
+       else
+                               /* configure source */
+               g_object_set (G_OBJECT (source), "location", filename, NULL);
+
+       if (is_audio)
+       {
+                       /* filesrc -> decodebin -> audioconvert -> capsfilter -> alsasink */
+               const char *decodertype = is_mp3 ? "mad" : "decodebin";
+
+               decoder = gst_element_factory_make (decodertype, "decoder");
+               if (!decoder)
+                       eWarning("failed to create %s decoder", decodertype);
+
+                       /* mp3 decoding needs id3demux to extract ID3 data. 'decodebin' would do that internally. */
+               if (is_mp3)
+               {
+                       filter = gst_element_factory_make ("id3demux", "filter");
+                       if (!filter)
+                               eWarning("failed to create id3demux");
+               }
+
+               conv = gst_element_factory_make ("audioconvert", "converter");
+               if (!conv)
+                       eWarning("failed to create audioconvert");
+
+               flt = gst_element_factory_make ("capsfilter", "flt");
+               if (!flt)
+                       eWarning("failed to create capsfilter");
+
+                       /* for some reasons, we need to set the sample format to depth/width=16, because auto negotiation doesn't work. */
+                       /* endianness, however, is not required to be set anymore. */
+               if (flt)
+               {
+                       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);
+                       g_object_set (G_OBJECT (flt), "caps", caps, (char*)0);
+                       gst_caps_unref(caps);
+               }
+
+               sink = gst_element_factory_make ("alsasink", "alsa-output");
+               if (!sink)
+                       eWarning("failed to create osssink");
+
+               if (source && decoder && conv && sink)
+                       all_ok = 1;
+       } else /* is_video */
+       {
+                       /* filesrc -> mpegdemux -> | queue_audio -> dvbaudiosink
+                                                  | queue_video -> dvbvideosink */
+
+               audio = gst_element_factory_make("dvbaudiosink", "audio");
+               queue_audio = gst_element_factory_make("queue", "queue_audio");
+               
+               video = gst_element_factory_make("dvbvideosink", "video");
+               queue_video = gst_element_factory_make("queue", "queue_video");
+               
+               if (is_mpeg_ps)
+                       mpegdemux = gst_element_factory_make("flupsdemux", "mpegdemux");
+               else
+                       mpegdemux = gst_element_factory_make("flutsdemux", "mpegdemux");
+                       
+               if (!mpegdemux)
+               {
+                       eDebug("fluendo mpegdemux not available, falling back to mpegdemux\n");
+                       mpegdemux = gst_element_factory_make("mpegdemux", "mpegdemux");
+               }
+               
+               eDebug("audio: %p, queue_audio %p, video %p, queue_video %p, mpegdemux %p", audio, queue_audio, video, queue_video, mpegdemux);
+               if (audio && queue_audio && video && queue_video && mpegdemux)
+               {
+                       g_object_set (G_OBJECT (queue_audio), "max-size-buffers", 0, NULL);
+                       g_object_set (G_OBJECT (queue_audio), "max-size-time", (guint64)0, NULL);
+                       g_object_set (G_OBJECT (queue_video), "max-size-buffers", 0, NULL);
+                       g_object_set (G_OBJECT (queue_video), "max-size-time", (guint64)0, NULL);
+                       all_ok = 1;
+               }
+       }
+       
+       if (m_gst_pipeline && all_ok)
+       {
+               gst_bus_set_sync_handler(gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline)), gstBusSyncHandler, this);
+
+               if (is_audio)
+               {
+                       if (!is_mp3)
+                       {
+                                       /* decodebin has dynamic pads. When they get created, we connect them to the audio bin */
+                               g_signal_connect (decoder, "new-decoded-pad", G_CALLBACK(gstCBnewPad), this);
+                               g_signal_connect (decoder, "unknown-type", G_CALLBACK(gstCBunknownType), this);
+                       }
+
+                               /* gst_bin will take the 'floating references' */
+                       gst_bin_add_many (GST_BIN (m_gst_pipeline),
+                                               source, decoder, NULL);
+
+                       if (filter)
+                       {
+                                       /* id3demux also has dynamic pads, which need to be connected to the decoder (this is done in the 'gstCBfilterPadAdded' CB) */
+                               gst_bin_add(GST_BIN(m_gst_pipeline), filter);
+                               gst_element_link(source, filter);
+                               m_decoder = decoder;
+                               g_signal_connect (filter, "pad-added", G_CALLBACK(gstCBfilterPadAdded), this);
+                       } else
+                                       /* in decodebin's case we can just connect the source with the decodebin, and decodebin will take care about id3demux (or whatever is required) */
+                               gst_element_link(source, decoder);
+
+                               /* create audio bin with the audioconverter, the capsfilter and the audiosink */
+                       m_gst_audio = gst_bin_new ("audiobin");
+
+                       GstPad *audiopad = gst_element_get_pad (conv, "sink");
+                       gst_bin_add_many(GST_BIN(m_gst_audio), conv, flt, sink, (char*)0);
+                       gst_element_link_many(conv, flt, sink, (char*)0);
+                       gst_element_add_pad(m_gst_audio, gst_ghost_pad_new ("sink", audiopad));
+                       gst_object_unref(audiopad);
+                       gst_bin_add (GST_BIN(m_gst_pipeline), m_gst_audio);
+
+                               /* in mad's case, we can directly connect the decoder to the audiobin. otherwise, we do this in gstCBnewPad */
+                       if (is_mp3)
+                               gst_element_link(decoder, m_gst_audio);
+               } else
+               {
+                       gst_bin_add_many(GST_BIN(m_gst_pipeline), source, mpegdemux, audio, queue_audio, video, queue_video, NULL);
+                       gst_element_link(source, mpegdemux);
+                       gst_element_link(queue_audio, audio);
+                       gst_element_link(queue_video, video);
+                       
+                       m_gst_audioqueue = queue_audio;
+                       m_gst_videoqueue = queue_video;
+                       
+                       g_signal_connect(mpegdemux, "pad-added", G_CALLBACK (gstCBpadAdded), this);
+               }
+       } else
+       {
+               if (m_gst_pipeline)
+                       gst_object_unref(GST_OBJECT(m_gst_pipeline));
+               if (source)
+                       gst_object_unref(GST_OBJECT(source));
+               if (decoder)
+                       gst_object_unref(GST_OBJECT(decoder));
+               if (conv)
+                       gst_object_unref(GST_OBJECT(conv));
+               if (sink)
+                       gst_object_unref(GST_OBJECT(sink));
+
+               if (audio)
+                       gst_object_unref(GST_OBJECT(audio));
+               if (queue_audio)
+                       gst_object_unref(GST_OBJECT(queue_audio));
+               if (video)
+                       gst_object_unref(GST_OBJECT(video));
+               if (queue_video)
+                       gst_object_unref(GST_OBJECT(queue_video));
+               if (mpegdemux)
+                       gst_object_unref(GST_OBJECT(mpegdemux));
+
+               eDebug("sorry, can't play.");
+               m_gst_pipeline = 0;
+       }
+       
+       gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
 }
 
 eServiceMP3::~eServiceMP3()
 {
-       printf("MP3: %s stop\n", filename.c_str());
+       if (m_state == stRunning)
+               stop();
+       
+       if (m_stream_tags)
+               gst_tag_list_free(m_stream_tags);
+       
+       if (m_gst_pipeline)
+       {
+               gst_object_unref (GST_OBJECT (m_gst_pipeline));
+               eDebug("SERVICEMP3 destruct!");
+       }
 }
+
+DEFINE_REF(eServiceMP3);       
+
+RESULT eServiceMP3::connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection)
+{
+       connection = new eConnection((iPlayableService*)this, m_event.connect(event));
+       return 0;
+}
+
+RESULT eServiceMP3::start()
+{
+       assert(m_state == stIdle);
        
-void eServiceMP3::AddRef()
+       m_state = stRunning;
+       if (m_gst_pipeline)
+       {
+               eDebug("starting pipeline");
+               gst_element_set_state (m_gst_pipeline, GST_STATE_PLAYING);
+       }
+       m_event(this, evStart);
+       return 0;
+}
+
+RESULT eServiceMP3::stop()
+{
+       assert(m_state != stIdle);
+       if (m_state == stStopped)
+               return -1;
+       printf("MP3: %s stop\n", m_filename.c_str());
+       gst_element_set_state(m_gst_pipeline, GST_STATE_NULL);
+       m_state = stStopped;
+       return 0;
+}
+
+RESULT eServiceMP3::setTarget(int target)
 {
-       ++ref;
+       return -1;
 }
 
-void eServiceMP3::Release()
+RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr)
 {
-       if (!--ref)
-               delete this;
+       ptr=this;
+       return 0;
 }
 
-RESULT eServiceMP3::start() { printf("mp3 starts\n"); return 0; }
-RESULT eServiceMP3::getIPausableService(ePtr<iPauseableService> &ptr) { ptr=this; return 0; }
+RESULT eServiceMP3::setSlowMotion(int ratio)
+{
+       return -1;
+}
 
+RESULT eServiceMP3::setFastForward(int ratio)
+{
+       return -1;
+}
+  
                // iPausableService
-RESULT eServiceMP3::pause() { printf("mp3 pauses!\n"); return 0; }
-RESULT eServiceMP3::unpause() { printf("mp3 unpauses!\n"); return 0; }
+RESULT eServiceMP3::pause()
+{
+       if (!m_gst_pipeline)
+               return -1;
+       gst_element_set_state(m_gst_pipeline, GST_STATE_PAUSED);
+       return 0;
+}
 
+RESULT eServiceMP3::unpause()
+{
+       if (!m_gst_pipeline)
+               return -1;
+       gst_element_set_state(m_gst_pipeline, GST_STATE_PLAYING);
+       return 0;
+}
+
+       /* iSeekableService */
+RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr)
+{
+       ptr = this;
+       return 0;
+}
+
+RESULT eServiceMP3::getLength(pts_t &pts)
+{
+       if (!m_gst_pipeline)
+               return -1;
+       if (m_state != stRunning)
+               return -1;
+       
+       GstFormat fmt = GST_FORMAT_TIME;
+       gint64 len;
+       
+       if (!gst_element_query_duration(m_gst_pipeline, &fmt, &len))
+               return -1;
+       
+               /* len is in nanoseconds. we have 90 000 pts per second. */
+       
+       pts = len / 11111;
+       return 0;
+}
+
+RESULT eServiceMP3::seekTo(pts_t to)
+{
+       if (!m_gst_pipeline)
+               return -1;
+
+               /* convert pts to nanoseconds */
+       gint64 time_nanoseconds = to * 11111LL;
+       if (!gst_element_seek (m_gst_pipeline, 1.0, GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH,
+               GST_SEEK_TYPE_SET, time_nanoseconds,
+               GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE))
+       {
+               eDebug("SEEK failed");
+               return -1;
+       }
+       return 0;
+}
+
+RESULT eServiceMP3::seekRelative(int direction, pts_t to)
+{
+       if (!m_gst_pipeline)
+               return -1;
+
+       pause();
+
+       pts_t ppos;
+       getPlayPosition(ppos);
+       ppos += to * direction;
+       if (ppos < 0)
+               ppos = 0;
+       seekTo(ppos);
+       
+       unpause();
+
+       return 0;
+}
+
+RESULT eServiceMP3::getPlayPosition(pts_t &pts)
+{
+       if (!m_gst_pipeline)
+               return -1;
+       if (m_state != stRunning)
+               return -1;
+       
+       GstFormat fmt = GST_FORMAT_TIME;
+       gint64 len;
+       
+       if (!gst_element_query_position(m_gst_pipeline, &fmt, &len))
+               return -1;
+       
+               /* len is in nanoseconds. we have 90 000 pts per second. */
+       pts = len / 11111;
+       return 0;
+}
+
+RESULT eServiceMP3::setTrickmode(int trick)
+{
+               /* trickmode currently doesn't make any sense for us. */
+       return -1;
+}
+
+RESULT eServiceMP3::isCurrentlySeekable()
+{
+       return 1;
+}
+
+RESULT eServiceMP3::info(ePtr<iServiceInformation>&i)
+{
+       i = this;
+       return 0;
+}
+
+RESULT eServiceMP3::getName(std::string &name)
+{
+       name = m_filename;
+       size_t n = name.rfind('/');
+       if (n != std::string::npos)
+               name = name.substr(n + 1);
+       return 0;
+}
+
+int eServiceMP3::getInfo(int w)
+{
+       switch (w)
+       {
+       case sTitle:
+       case sArtist:
+       case sAlbum:
+       case sComment:
+       case sTracknumber:
+       case sGenre:
+               return resIsString;
+
+       default:
+               return resNA;
+       }
+}
+
+std::string eServiceMP3::getInfoString(int w)
+{
+       gchar *tag = 0;
+       switch (w)
+       {
+       case sTitle:
+               tag = GST_TAG_TITLE;
+               break;
+       case sArtist:
+               tag = GST_TAG_ARTIST;
+               break;
+       case sAlbum:
+               tag = GST_TAG_ALBUM;
+               break;
+       case sComment:
+               tag = GST_TAG_COMMENT;
+               break;
+       case sTracknumber:
+               tag = GST_TAG_TRACK_NUMBER;
+               break;
+       case sGenre:
+               tag = GST_TAG_GENRE;
+               break;
+       default:
+               return "";
+       }
+       
+       if (!m_stream_tags || !tag)
+               return "";
+       
+       gchar *value;
+       
+       if (gst_tag_list_get_string(m_stream_tags, tag, &value))
+       {
+               std::string res = value;
+               g_free(value);
+               return res;
+       }
+       
+       return "";
+}
+
+
+               void foreach(const GstTagList *list, const gchar *tag, gpointer user_data)
+               {
+                       if (tag)
+                               eDebug("Tag: %c%c%c%c", tag[0], tag[1], tag[2], tag[3]);
+                       
+               }
+
+void eServiceMP3::gstBusCall(GstBus *bus, GstMessage *msg)
+{
+       if (msg)
+       {
+               gchar *string = gst_structure_to_string(gst_message_get_structure(msg));
+               eDebug("gst_message: %s", string);
+               g_free(string);
+       }
+       
+       switch (GST_MESSAGE_TYPE (msg))
+       {
+       case GST_MESSAGE_EOS:
+               m_event((iPlayableService*)this, evEOF);
+               break;
+       case GST_MESSAGE_ERROR:
+       {
+               gchar *debug;
+               GError *err;
+               gst_message_parse_error (msg, &err, &debug);
+               g_free (debug);
+               eWarning("Gstreamer error: %s", err->message);
+               g_error_free(err);
+                       /* TODO: signal error condition to user */
+               break;
+       }
+       case GST_MESSAGE_TAG:
+       {
+               GstTagList *tags, *result;
+               gst_message_parse_tag(msg, &tags);
+
+               result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_PREPEND);
+               if (result)
+               {
+                       if (m_stream_tags)
+                               gst_tag_list_free(m_stream_tags);
+                       m_stream_tags = result;
+               }
+               gst_tag_list_free(tags);
+               
+               m_event((iPlayableService*)this, evUpdatedInfo);
+               break;
+       }
+       default:
+               break;
+       }
+}
+
+GstBusSyncReply eServiceMP3::gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data)
+{
+       eServiceMP3 *_this = (eServiceMP3*)user_data;
+       _this->m_pump.send(1);
+               /* wake */
+       return GST_BUS_PASS;
+}
+
+void eServiceMP3::gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer user_data)
+{
+       eServiceMP3 *_this = (eServiceMP3*)user_data;
+       
+       gchar *name;
+       name = gst_pad_get_name (pad);
+       g_print ("A new pad %s was created\n", name);
+       if (!strncmp(name, "audio_", 6)) // mpegdemux uses video_nn with n=0,1,.., flupsdemux uses stream id
+               gst_pad_link(pad, gst_element_get_pad (_this->m_gst_audioqueue, "sink"));
+       if (!strncmp(name, "video_", 6))
+               gst_pad_link(pad, gst_element_get_pad (_this->m_gst_videoqueue, "sink"));
+       g_free (name);
+       
+}
+
+void eServiceMP3::gstCBfilterPadAdded(GstElement *filter, GstPad *pad, gpointer user_data)
+{
+       eServiceMP3 *_this = (eServiceMP3*)user_data;
+       gst_pad_link(pad, gst_element_get_pad (_this->m_decoder, "sink"));
+}
+
+void eServiceMP3::gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer user_data)
+{
+       eServiceMP3 *_this = (eServiceMP3*)user_data;
+       GstCaps *caps;
+       GstStructure *str;
+       GstPad *audiopad;
+
+       /* only link once */
+       audiopad = gst_element_get_pad (_this->m_gst_audio, "sink");
+       if (GST_PAD_IS_LINKED (audiopad)) {
+               eDebug("audio already linked!");
+               g_object_unref (audiopad);
+               return;
+       }
+
+       /* check media type */
+       caps = gst_pad_get_caps (pad);
+       str = gst_caps_get_structure (caps, 0);
+       eDebug("gst new pad! %s", gst_structure_get_name (str));
+       
+       if (!g_strrstr (gst_structure_get_name (str), "audio")) {
+               gst_caps_unref (caps);
+               gst_object_unref (audiopad);
+               return;
+       }
+       
+       gst_caps_unref (caps);
+       gst_pad_link (pad, audiopad);
+}
+
+void eServiceMP3::gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *caps, gpointer user_data)
+{
+       eServiceMP3 *_this = (eServiceMP3*)user_data;
+       GstStructure *str;
+
+       /* check media type */
+       caps = gst_pad_get_caps (pad);
+       str = gst_caps_get_structure (caps, 0);
+       eDebug("unknown type: %s - this can't be decoded.", gst_structure_get_name (str));
+       gst_caps_unref (caps);
+}
+
+void eServiceMP3::gstPoll(const int&)
+{
+               /* ok, we have a serious problem here. gstBusSyncHandler sends 
+                  us the wakup signal, but likely before it was posted.
+                  the usleep, an EVIL HACK (DON'T DO THAT!!!) works around this.
+                  
+                  I need to understand the API a bit more to make this work 
+                  proplerly. */
+       usleep(1);
+       
+       GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (m_gst_pipeline));
+       GstMessage *message;
+       while ((message = gst_bus_pop (bus)))
+       {
+               gstBusCall(bus, message);
+               gst_message_unref (message);
+       }
+}
 
-eAutoInitP0<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
+eAutoInitPtr<eServiceFactoryMP3> init_eServiceFactoryMP3(eAutoInitNumbers::service+1, "eServiceFactoryMP3");
+#else
+#warning gstreamer not available, not building media player
+#endif