clamp jumps at SOF
[enigma2.git] / lib / dvb / dvb.cpp
index cac5a67925c11b125ed744af33017d034ba84dd9..86b1965e31b4bf802cc176281566541f8c9331fb 100644 (file)
@@ -43,6 +43,7 @@ DEFINE_REF(eDVBResourceManager);
 eDVBResourceManager *eDVBResourceManager::instance;
 
 eDVBResourceManager::eDVBResourceManager()
+       :m_releaseCachedChannelTimer(eApp)
 {
        avail = 1;
        busy = 0;
@@ -63,6 +64,8 @@ eDVBResourceManager::eDVBResourceManager()
        
        eDebug("found %d adapter, %d frontends and %d demux", 
                m_adapter.size(), m_frontend.size(), m_demux.size());
+
+       CONNECT(m_releaseCachedChannelTimer.timeout, eDVBResourceManager::releaseCachedChannel);
 }
 
 
@@ -307,7 +310,9 @@ RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUse
                        channel = m_cached_channel;
                        return 0;
                }
+               m_cached_channel_state_changed_conn.disconnect();
                m_cached_channel=0;
+               m_releaseCachedChannelTimer.stop();
        }
 
 //     eDebug("allocate channel.. %04x:%04x", channelid.transport_stream_id.get(), channelid.original_network_id.get());
@@ -355,16 +360,52 @@ RESULT eDVBResourceManager::allocateChannel(const eDVBChannelID &channelid, eUse
                return errChidNotFound;
        }
        m_cached_channel = channel = ch;
+       m_cached_channel_state_changed_conn =
+               CONNECT(ch->m_stateChanged,eDVBResourceManager::DVBChannelStateChanged);
 
        return 0;
 }
 
+void eDVBResourceManager::DVBChannelStateChanged(iDVBChannel *chan)
+{
+       int state=0;
+       chan->getState(state);
+       switch (state)
+       {
+               case iDVBChannel::state_release:
+               case iDVBChannel::state_ok:
+               {
+                       eDebug("stop release channel timer");
+                       m_releaseCachedChannelTimer.stop();
+                       break;
+               }
+               case iDVBChannel::state_last_instance:
+               {
+                       eDebug("start release channel timer");
+                       m_releaseCachedChannelTimer.start(3000, true);
+                       break;
+               }
+               default: // ignore all other events
+                       break;
+       }
+}
+
+void eDVBResourceManager::releaseCachedChannel()
+{
+       eDebug("release cached channel (timer timeout)");
+       m_cached_channel=0;
+}
+
 RESULT eDVBResourceManager::allocateRawChannel(eUsePtr<iDVBChannel> &channel, int frontend_index)
 {
        ePtr<eDVBAllocatedFrontend> fe;
 
        if (m_cached_channel)
+       {
+               m_cached_channel_state_changed_conn.disconnect();
                m_cached_channel=0;
+               m_releaseCachedChannelTimer.stop();
+       }
 
        if (allocateFrontendByIndex(fe, frontend_index))
                return errNoFrontend;
@@ -381,9 +422,6 @@ RESULT eDVBResourceManager::allocatePVRChannel(eUsePtr<iDVBPVRChannel> &channel)
 {
        ePtr<eDVBAllocatedDemux> demux;
 
-       if (m_cached_channel)
-               m_cached_channel=0;
-
        eDVBChannel *ch;
        ch = new eDVBChannel(this, 0);
        
@@ -588,11 +626,11 @@ void eDVBChannel::frontendStateChanged(iDVBFrontend*fe)
        } else if (state == iDVBFrontend::stateLostLock)
        {
                        /* on managed channels, we try to retune in order to re-acquire lock. */
-               if (m_feparm)
+               if (m_current_frontend_parameters)
                {
                        eDebug("OURSTATE: lost lock, trying to retune");
                        ourstate = state_tuning;
-                       m_frontend->get().tune(*m_feparm);
+                       m_frontend->get().tune(*m_current_frontend_parameters);
                } else
                        /* on unmanaged channels, we don't do this. the client will do this. */
                {
@@ -630,9 +668,6 @@ void eDVBChannel::pvrEvent(int event)
 
 void eDVBChannel::cueSheetEvent(int event)
 {
-               /* we need proper locking here! */
-       eDebug("CUE SHEET EVENT %d", event);
-       
        switch (event)
        {
        case eCueSheet::evtSeek:
@@ -641,36 +676,55 @@ void eDVBChannel::cueSheetEvent(int event)
                break;
        case eCueSheet::evtSkipmode:
        {
-               m_cue->m_seek_requests.push_back(std::pair<int, pts_t>(1, 0)); /* resync */
-               if (m_cue->m_skipmode_ratio)
                {
-                       int bitrate = m_tstools.calcBitrate(); /* in bits/s */
-                       eDebug("skipmode ratio is %lld:90000, bitrate is %d bit/s", m_cue->m_skipmode_ratio, bitrate);
-                                       /* i agree that this might look a bit like black magic. */
-                       m_skipmode_n = 512*1024; /* must be 1 iframe at least. */
-                       m_skipmode_m = bitrate / 8 / 90000 * m_cue->m_skipmode_ratio;
-
-                       eDebug("resolved to: %d %d", m_skipmode_m, m_skipmode_n);
-                       
-                       if (abs(m_skipmode_m) < abs(m_skipmode_n))
+                       eSingleLocker l(m_cue->m_lock);
+                       m_cue->m_seek_requests.push_back(std::pair<int, pts_t>(1, 0)); /* resync */
+                       if (m_cue->m_skipmode_ratio)
                        {
-                               eFatal("damn, something is wrong with this calculation");
+                               int bitrate = m_tstools.calcBitrate(); /* in bits/s */
+                               eDebug("skipmode ratio is %lld:90000, bitrate is %d bit/s", m_cue->m_skipmode_ratio, bitrate);
+                                               /* i agree that this might look a bit like black magic. */
+                               m_skipmode_n = 512*1024; /* must be 1 iframe at least. */
+                               m_skipmode_m = bitrate / 8 / 90000 * m_cue->m_skipmode_ratio / 8;
+                               
+                               if (m_cue->m_skipmode_ratio < 0)
+                                       m_skipmode_m -= m_skipmode_n;
+       
+                               eDebug("resolved to: %d %d", m_skipmode_m, m_skipmode_n);
+                               
+                               if (abs(m_skipmode_m) < abs(m_skipmode_n))
+                               {
+                                       eWarning("something is wrong with this calculation");
+                                       m_skipmode_n = m_skipmode_m = 0;
+                               }
+                               
+                       } else
+                       {
+                               eDebug("skipmode ratio is 0, normal play");
                                m_skipmode_n = m_skipmode_m = 0;
                        }
-                       
-               } else
-               {
-                       eDebug("skipmode ratio is 0, normal play");
-                       m_skipmode_n = m_skipmode_m = 0;
                }
                flushPVR(m_cue->m_decoding_demux);
                break;
        }
        case eCueSheet::evtSpanChanged:
-               eDebug("source span translation not yet supported");
-       //      recheckCuesheetSpans();
+       {
+               m_source_span.clear();
+               for (std::list<std::pair<pts_t, pts_t> >::const_iterator i(m_cue->m_spans.begin()); i != m_cue->m_spans.end(); ++i)
+               {
+                       off_t offset_in, offset_out;
+                       pts_t pts_in = i->first, pts_out = i->second;
+                       if (m_tstools.getOffset(offset_in, pts_in) || m_tstools.getOffset(offset_out, pts_out))
+                       {
+                               eDebug("span translation failed.\n");
+                               continue;
+                       }
+                       eDebug("source span: %llx .. %llx, translated to %llx..%llx", pts_in, pts_out, offset_in, offset_out);
+                       m_source_span.push_back(std::pair<off_t, off_t>(offset_in, offset_out));
+               }
                break;
        }
+       }
 }
 
        /* remember, this gets called from another thread. */
@@ -685,6 +739,8 @@ void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off
                size = max;
                return;
        }
+
+       eSingleLocker l(m_cue->m_lock);
        
        if (!m_cue->m_decoding_demux)
        {
@@ -702,13 +758,6 @@ void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off
        
        eDebug("getNextSourceSpan, current offset is %08llx!", current_offset);
        
-       if ((current_offset < -m_skipmode_m) && (m_skipmode_m < 0))
-       {
-               eDebug("reached SOF");
-               m_skipmode_m = 0;
-               m_pvr_thread->sendEvent(eFilePushThread::evtUser);
-       }
-       
        current_offset += m_skipmode_m;
        
        while (!m_cue->m_seek_requests.empty())
@@ -718,29 +767,56 @@ void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off
                int relative = seek.first;
                pts_t pts = seek.second;
 
-               int bitrate = m_tstools.calcBitrate(); /* in bits/s */
-       
-               if (bitrate == -1)
-                       continue;
-       
+               pts_t now = 0;
                if (relative)
                {
-                       pts_t now;
-                                       /* we're using the decoder's timestamp here. this 
-                                          won't work for radio (ouch). */
+                       if (!m_cue->m_decoder)
+                       {
+                               eDebug("no decoder - can't seek relative");
+                               continue;
+                       }
+                       if (m_cue->m_decoder->getPTS(0, now))
+                       {
+                               eDebug("decoder getPTS failed, can't seek relative");
+                               continue;
+                       }
                        if (getCurrentPosition(m_cue->m_decoding_demux, now, 1))
                        {
                                eDebug("seekTo: getCurrentPosition failed!");
                                continue;
                        }
+               }
+               
+               if (relative == 1) /* pts relative */
+               {
                        pts += now;
+                       if (pts < 0)
+                               pts = 0;
+               }
+
+               if (relative != 2)
+                       if (pts < 0)
+                               pts = 0;
+               
+               if (relative == 2) /* AP relative */
+               {
+                       eDebug("AP relative seeking: %lld, at %lld", pts, now);
+                       pts_t nextap;
+                       if (m_tstools.getNextAccessPoint(nextap, now, pts))
+                       {
+                               pts = now;
+                               eDebug("AP relative seeking failed!");
+                       } else
+                       {
+                               eDebug("next ap is %llx\n", pts);
+                               pts = nextap;
+                       }
                }
-       
-               if (pts < 0)
-                       pts = 0;
-       
-               off_t offset = (pts * (pts_t)bitrate) / 8ULL / 90000ULL;
                
+               off_t offset = 0;
+               if (m_tstools.getOffset(offset, pts))
+                       continue;
+
                eDebug("ok, resolved skip (rel: %d, diff %lld), now at %08llx", relative, pts, offset);
                current_offset = offset;
        }
@@ -758,27 +834,58 @@ void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off
                }
                if (current_offset < i->first)
                {
-                       start = i->first;
-                       size = i->second - i->first;
-                       if (size > max)
+                               /* ok, our current offset is in an 'out' zone. */
+                       if ((m_skipmode_m >= 0) || (i == m_source_span.begin()))
+                       {
+                                       /* in normal playback, just start at the next zone. */
+                               start = i->first;
+                               size = i->second - i->first;
+                               if (size > max)
+                                       size = max;
+                               eDebug("skip");
+                               if (m_skipmode_m < 0)
+                               {
+                                       eDebug("reached SOF");
+                                               /* reached SOF */
+                                       m_skipmode_m = 0;
+                                       m_pvr_thread->sendEvent(eFilePushThread::evtUser);
+                               }
+                       } else
+                       {
+                                       /* when skipping reverse, however, choose the zone before. */
+                               --i;
+                               eDebug("skip to previous block, which is %llx..%llx", i->first, i->second);
+                               size_t len = i->second - i->first;
+                               if (max > len)
+                                       max = len;
+                               start = i->second - max;
                                size = max;
-                       eDebug("skip");
+                               eDebug("skipping to %llx, %d", start, size);
+                       }
                        return;
                }
        }
        
+       if ((current_offset < -m_skipmode_m) && (m_skipmode_m < 0))
+       {
+               eDebug("reached SOF");
+               m_skipmode_m = 0;
+               m_pvr_thread->sendEvent(eFilePushThread::evtUser);
+       }
+       
        start = current_offset;
        size = max;
        eDebug("END OF CUESHEET. (%08llx, %d)", start, size);
-       
-       if (size < 4096)
-               eFatal("blub");
        return;
 }
 
 void eDVBChannel::AddUse()
 {
-       ++m_use_count;
+       if (++m_use_count > 1 && m_state == state_last_instance)
+       {
+               m_state = state_ok;
+               m_stateChanged(this);
+       }
 }
 
 void eDVBChannel::ReleaseUse()
@@ -788,6 +895,11 @@ void eDVBChannel::ReleaseUse()
                m_state = state_release;
                m_stateChanged(this);
        }
+       else if (m_use_count == 1)
+       {
+               m_state = state_last_instance;
+               m_stateChanged(this);
+       }
 }
 
 RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontendParameters> &feparm)
@@ -810,7 +922,7 @@ RESULT eDVBChannel::setChannel(const eDVBChannelID &channelid, ePtr<iDVBFrontend
                        /* if tuning fails, shutdown the channel immediately. */
        int res;
        res = m_frontend->get().tune(*feparm);
-       m_feparm = feparm;
+       m_current_frontend_parameters = feparm;
        
        if (res)
        {
@@ -869,8 +981,13 @@ RESULT eDVBChannel::getFrontend(ePtr<iDVBFrontend> &frontend)
        frontend = &m_frontend->get();
        if (frontend)
                return 0;
-       else
-               return -ENODEV;
+       return -ENODEV;
+}
+
+RESULT eDVBChannel::getCurrentFrontendParameters(ePtr<iDVBFrontendParameters> &param)
+{
+       param = m_current_frontend_parameters;
+       return 0;
 }
 
 RESULT eDVBChannel::playFile(const char *file)
@@ -889,21 +1006,17 @@ RESULT eDVBChannel::playFile(const char *file)
                   THEN DO A REAL FIX HERE! */
        
                /* (this codepath needs to be improved anyway.) */
+#if HAVE_DVB_API_VERSION < 3
+       m_pvr_fd_dst = open("/dev/pvr", O_WRONLY);
+#else
        m_pvr_fd_dst = open("/dev/misc/pvr", O_WRONLY);
+#endif
        if (m_pvr_fd_dst < 0)
        {
                eDebug("can't open /dev/misc/pvr - you need to buy the new(!) $$$ box! (%m)"); // or wait for the driver to be improved.
                return -ENODEV;
        }
        
-       m_pvr_fd_src = open(file, O_RDONLY|O_LARGEFILE);
-       if (m_pvr_fd_src < 0)
-       {
-               eDebug("can't open PVR m_pvr_fd_src file %s (%m)", file);
-               close(m_pvr_fd_dst);
-               return -ENOENT;
-       }
-       
        m_state = state_ok;
        m_stateChanged(this);
        
@@ -911,7 +1024,13 @@ RESULT eDVBChannel::playFile(const char *file)
        m_pvr_thread->enablePVRCommit(1);
        m_pvr_thread->setScatterGather(this);
 
-       m_pvr_thread->start(m_pvr_fd_src, m_pvr_fd_dst);
+       if (m_pvr_thread->start(file, m_pvr_fd_dst))
+       {
+               delete m_pvr_thread;
+               m_pvr_thread = 0;
+               eDebug("can't open PVR file %s (%m)", file);
+               return -ENOENT;
+       }
        CONNECT(m_pvr_thread->m_event, eDVBChannel::pvrEvent);
 
        return 0;
@@ -922,7 +1041,6 @@ void eDVBChannel::stopFile()
        if (m_pvr_thread)
        {
                m_pvr_thread->stop();
-               ::close(m_pvr_fd_src);
                ::close(m_pvr_fd_dst);
                delete m_pvr_thread;
                m_pvr_thread = 0;
@@ -947,39 +1065,30 @@ RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, in
        if (!decoding_demux)
                return -1;
        
-       off_t begin = 0;
-               /* getPTS for offset 0 is cached, so it doesn't harm. */
-       int r = m_tstools.getPTS(begin, pos);
-       if (r)
-       {
-               eDebug("tstools getpts(0) failed!");
-               return r;
-       }
-       
        pts_t now;
        
-                       /* TODO: this is a gross hack. */
-       r = decoding_demux->getSTC(now, mode ? 128 : 0);
-
-       if (r)
+       int r;
+       
+       if (mode == 0) /* demux */
        {
-               eDebug("demux getSTC failed");
-               return -1;
-       }
+               r = decoding_demux->getSTC(now, 0);
+               if (r)
+               {
+                       eDebug("demux getSTC failed");
+                       return -1;
+               }
+       } else
+               now = pos; /* fixup supplied */
        
-//     eDebug("STC: %08llx PTS: %08llx, diff %lld", now, pos, now - pos);
-               /* when we are less than 10 seconds before the start, return 0. */
-               /* (we're just waiting for the timespam to start) */
-       if ((now < pos) && ((pos - now) < 90000 * 10))
+       off_t off = 0; /* TODO: fixme */
+       r = m_tstools.fixupPTS(off, now);
+       if (r)
        {
-               pos = 0;
-               return 0;
+               eDebug("fixup PTS failed");
+               return -1;
        }
        
-       if (now < pos) /* wrap around */
-               pos = now + ((pts_t)1)<<33 - pos;
-       else
-               pos = now - pos;
+       pos = now;
        
        return 0;
 }
@@ -1021,30 +1130,45 @@ eCueSheet::eCueSheet()
 
 void eCueSheet::seekTo(int relative, const pts_t &pts)
 {
-       m_seek_requests.push_back(std::pair<int, pts_t>(relative, pts));
+       {
+               eSingleLock l(m_lock);
+               m_seek_requests.push_back(std::pair<int, pts_t>(relative, pts));
+       }
        m_event(evtSeek);
 }
        
 void eCueSheet::clear()
 {
+       eSingleLock l(m_lock);
        m_spans.clear();
 }
 
 void eCueSheet::addSourceSpan(const pts_t &begin, const pts_t &end)
 {
-       m_spans.push_back(std::pair<pts_t, pts_t>(begin, end));
+       {
+               eSingleLock l(m_lock);
+               m_spans.push_back(std::pair<pts_t, pts_t>(begin, end));
+       }
+}
+
+void eCueSheet::commitSpans()
+{
        m_event(evtSpanChanged);
 }
 
 void eCueSheet::setSkipmode(const pts_t &ratio)
 {
-       m_skipmode_ratio = ratio;
+       {
+               eSingleLock l(m_lock);
+               m_skipmode_ratio = ratio;
+       }
        m_event(evtSkipmode);
 }
 
-void eCueSheet::setDecodingDemux(iDVBDemux *demux)
+void eCueSheet::setDecodingDemux(iDVBDemux *demux, iTSMPEGDecoder *decoder)
 {
        m_decoding_demux = demux;
+       m_decoder = decoder;
 }
 
 RESULT eCueSheet::connectEvent(const Slot1<void,int> &event, ePtr<eConnection> &connection)