use cached pts/offsets when available, clean up

[enigma2.git] / lib / dvb / dvb.cpp

diff --git a/lib/dvb/dvb.cpp b/lib/dvb/dvb.cpp
index 601e62799b7cecbaab2e2fa6a2cf4a96d36c97a6..11b1285a702d7cbec6dd6b8ed41137bbe0db1d56 100644 (file)
--- a/lib/dvb/dvb.cpp
+++ b/lib/dvb/dvb.cpp
@@ -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);
        
@@ -780,7 +818,11 @@ void eDVBChannel::getNextSourceSpan(off_t current_offset, size_t bytes_read, off
 
 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()
@@ -790,6 +832,11 @@ 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)
@@ -949,17 +996,8 @@ 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;
-       
+       int r;
                        /* TODO: this is a gross hack. */
        r = decoding_demux->getSTC(now, mode ? 128 : 0);
 
@@ -969,19 +1007,15 @@ RESULT eDVBChannel::getCurrentPosition(iDVBDemux *decoding_demux, pts_t &pos, in
                return -1;
        }
        
-//     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;
 }