lib/service/servicemp3.h

   1 #ifndef __servicemp3_h
   2 #define __servicemp3_h
   3
   4 #ifdef HAVE_GSTREAMER
   5 #include <lib/base/message.h>
   6 #include <lib/service/iservice.h>
   7 #include <lib/dvb/pmt.h>
   8 #include <lib/dvb/subtitle.h>
   9 #include <lib/dvb/teletext.h>
  10 #include <gst/gst.h>
  11
  12 class eStaticServiceMP3Info;
  13
  14 class eSubtitleWidget;
  15
  16 class eServiceFactoryMP3: public iServiceHandler
  17 {
  18         DECLARE_REF(eServiceFactoryMP3);
  19 public:
  20         eServiceFactoryMP3();
  21         virtual ~eServiceFactoryMP3();
  22         enum { id = 0x1001 };
  23
  24                 // iServiceHandler
  25         RESULT play(const eServiceReference &, ePtr<iPlayableService> &ptr);
  26         RESULT record(const eServiceReference &, ePtr<iRecordableService> &ptr);
  27         RESULT list(const eServiceReference &, ePtr<iListableService> &ptr);
  28         RESULT info(const eServiceReference &, ePtr<iStaticServiceInformation> &ptr);
  29         RESULT offlineOperations(const eServiceReference &, ePtr<iServiceOfflineOperations> &ptr);
  30 private:
  31         ePtr<eStaticServiceMP3Info> m_service_info;
  32 };
  33
  34 class eStaticServiceMP3Info: public iStaticServiceInformation
  35 {
  36         DECLARE_REF(eStaticServiceMP3Info);
  37         friend class eServiceFactoryMP3;
  38         eStaticServiceMP3Info();
  39 public:
  40         RESULT getName(const eServiceReference &ref, std::string &name);
  41         int getLength(const eServiceReference &ref);
  42 };
  43
  44 typedef struct _GstElement GstElement;
  45
  46 typedef enum { atUnknown, atMPEG, atMP3, atAC3, atDTS, atAAC, atPCM, atOGG } audiotype_t;
  47 typedef enum { stPlainText, stSSA, stSRT } subtype_t;
  48
  49 class eServiceMP3: public iPlayableService, public iPauseableService,
  50         public iServiceInformation, public iSeekableService, public iAudioTrackSelection, public iAudioChannelSelection, public iSubtitleOutput, public Object
  51 {
  52         DECLARE_REF(eServiceMP3);
  53 public:
  54         virtual ~eServiceMP3();
  55
  56                 // iPlayableService
  57         RESULT connectEvent(const Slot2<void,iPlayableService*,int> &event, ePtr<eConnection> &connection);
  58         RESULT start();
  59         RESULT stop();
  60         RESULT setTarget(int target);
  61
  62         RESULT pause(ePtr<iPauseableService> &ptr);
  63         RESULT setSlowMotion(int ratio);
  64         RESULT setFastForward(int ratio);
  65
  66         RESULT seek(ePtr<iSeekableService> &ptr);
  67         RESULT audioTracks(ePtr<iAudioTrackSelection> &ptr);
  68         RESULT audioChannel(ePtr<iAudioChannelSelection> &ptr);
  69         RESULT subtitle(ePtr<iSubtitleOutput> &ptr);
  70
  71                 // not implemented (yet)
  72         RESULT frontendInfo(ePtr<iFrontendInformation> &ptr) { ptr = 0; return -1; }
  73         RESULT subServices(ePtr<iSubserviceList> &ptr) { ptr = 0; return -1; }
  74         RESULT timeshift(ePtr<iTimeshiftService> &ptr) { ptr = 0; return -1; }
  75         RESULT cueSheet(ePtr<iCueSheet> &ptr) { ptr = 0; return -1; }
  76         RESULT audioDelay(ePtr<iAudioDelay> &ptr) { ptr = 0; return -1; }
  77         RESULT rdsDecoder(ePtr<iRdsDecoder> &ptr) { ptr = 0; return -1; }
  78         RESULT stream(ePtr<iStreamableService> &ptr) { ptr = 0; return -1; }
  79         RESULT keys(ePtr<iServiceKeys> &ptr) { ptr = 0; return -1; }
  80
  81                 // iPausableService
  82         RESULT pause();
  83         RESULT unpause();
  84
  85         RESULT info(ePtr<iServiceInformation>&);
  86
  87                 // iSeekableService
  88         RESULT getLength(pts_t &SWIG_OUTPUT);
  89         RESULT seekTo(pts_t to);
  90         RESULT seekRelative(int direction, pts_t to);
  91         RESULT getPlayPosition(pts_t &SWIG_OUTPUT);
  92         RESULT setTrickmode(int trick);
  93         RESULT isCurrentlySeekable();
  94
  95                 // iServiceInformation
  96         RESULT getName(std::string &name);
  97         int getInfo(int w);
  98         std::string getInfoString(int w);
  99
 100                 // iAudioTrackSelection
 101         int getNumberOfTracks();
 102         RESULT selectTrack(unsigned int i);
 103         RESULT getTrackInfo(struct iAudioTrackInfo &, unsigned int n);
 104         int getCurrentTrack();
 105
 106                 // iAudioChannelSelection
 107         int getCurrentChannel();
 108         RESULT selectChannel(int i);
 109
 110                 // iSubtitleOutput
 111         RESULT enableSubtitles(eWidget *parent, SWIG_PYOBJECT(ePyObject) entry);
 112         RESULT disableSubtitles(eWidget *parent);
 113         PyObject *getSubtitleList();
 114         PyObject *getCachedSubtitle();
 115
 116         struct audioStream
 117         {
 118                 GstPad* pad;
 119                 audiotype_t type;
 120                 std::string language_code; /* iso-639, if available. */
 121                 audioStream()
 122                         :pad(0), type(atUnknown)
 123                 {
 124                 }
 125         };
 126         struct subtitleStream
 127         {
 128                 GstPad* pad;
 129                 subtype_t type;
 130                 std::string language_code; /* iso-639, if available. */
 131                 subtitleStream()
 132                         :pad(0)
 133                 {
 134                 }
 135         };
 136 private:
 137         int m_currentAudioStream;
 138         int m_currentSubtitleStream;
 139         int selectAudioStream(int i);
 140         std::vector<audioStream> m_audioStreams;
 141         std::vector<subtitleStream> m_subtitleStreams;
 142         eSubtitleWidget *m_subtitle_widget;
 143         int m_currentTrickRatio;
 144         eTimer m_seekTimeout;
 145         void seekTimeoutCB();
 146         friend class eServiceFactoryMP3;
 147         std::string m_filename;
 148         eServiceMP3(const char *filename);
 149         Signal2<void,iPlayableService*,int> m_event;
 150         enum
 151         {
 152                 stIdle, stRunning, stStopped,
 153         };
 154         int m_state;
 155         GstElement *m_gst_pipeline;
 156         GstTagList *m_stream_tags;
 157         eFixedMessagePump<int> m_pump;
 158         std::string m_error_message;
 159
 160         audiotype_t gstCheckAudioPad(GstStructure* structure);
 161         void gstBusCall(GstBus *bus, GstMessage *msg);
 162         static GstBusSyncReply gstBusSyncHandler(GstBus *bus, GstMessage *message, gpointer user_data);
 163         static void gstCBpadAdded(GstElement *decodebin, GstPad *pad, gpointer data); /* for mpegdemux */
 164         static void gstCBfilterPadAdded(GstElement *filter, GstPad *pad, gpointer user_data); /* for id3demux */
 165         static void gstCBnewPad(GstElement *decodebin, GstPad *pad, gboolean last, gpointer data); /* for decodebin */
 166         static void gstCBunknownType(GstElement *decodebin, GstPad *pad, GstCaps *l, gpointer data);
 167         static void gstCBsubtitleAvail(GstElement *element, GstBuffer *buffer, GstPad *pad, gpointer user_data);
 168         static void gstCBsubtitlePadEvent(GstPad *pad, GstEvent *event, gpointer user_data);
 169         GstPad* gstCreateSubtitleSink(eServiceMP3* _this, subtype_t type);
 170         void gstPoll(const int&);
 171 };
 172 #endif
 173
 174 #endif