add getNextAccessPoint
[enigma2.git] / lib / dvb / pvrparse.cpp
index bde4376..65e599c 100644 (file)
@@ -217,6 +217,41 @@ off_t eMPEGStreamInformation::getAccessPoint(pts_t ts)
        return last;
 }
 
+int eMPEGStreamInformation::getNextAccessPoint(pts_t &ts, const pts_t &start, int direction)
+{
+       off_t offset = getAccessPoint(start);
+       std::map<off_t, pts_t>::const_iterator i = m_access_points.find(offset);
+       if (i == m_access_points.end())
+       {
+               eDebug("getNextAccessPoint: initial AP not found");
+               return -1;
+       }
+       while (direction)
+       {
+               if (direction > 0)
+               {
+                       if (i == m_access_points.end())
+                               return -1;
+                       ++i;
+                       direction--;
+               }
+               if (direction < 0)
+               {
+                       if (i == m_access_points.begin())
+                       {
+                               eDebug("at start");
+                               return -1;
+                       }
+                       --i;
+                       direction++;
+               }
+       }
+       ts = i->second - getDelta(i->first);
+       eDebug("fine, at %llx - %llx = %llx", ts, i->second, getDelta(i->first));
+       eDebug("fine, at %lld - %lld = %lld", ts, i->second, getDelta(i->first));
+       return 0;
+}
+
 eMPEGStreamParserTS::eMPEGStreamParserTS(eMPEGStreamInformation &streaminfo): m_streaminfo(streaminfo), m_pktptr(0), m_pid(-1), m_need_next_packet(0), m_skip(0)
 {
 }