Merge branch 'master' into tmbinc/FixTimingBugs

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

diff --git a/lib/dvb/pvrparse.cpp b/lib/dvb/pvrparse.cpp
index c96669b01aa2282d0ce66a1d44ef14d33baecaa8..c7a37460a44619de77dc4ad9633ef15c2d4e7d1b 100644 (file)
--- a/lib/dvb/pvrparse.cpp
+++ b/lib/dvb/pvrparse.cpp
@@ -35,6 +35,7 @@ int eMPEGStreamInformation::load(const char *filename)
        if (!f)
                return -1;
        m_access_points.clear();
+       m_pts_to_offset.clear();
        while (1)
        {
                unsigned long long d[2];
@@ -46,6 +47,7 @@ int eMPEGStreamInformation::load(const char *filename)
                d[1] = bswap_64(d[1]);
 #endif
                m_access_points[d[0]] = d[1];
+               m_pts_to_offset.insert(std::pair<pts_t,off_t>(d[1], d[0]));
        }
        fclose(f);
        fixupDiscontinuties();
@@ -123,7 +125,7 @@ pts_t eMPEGStreamInformation::getDelta(off_t offset)
                /* i can be the first when you query for something before the first PTS */
        if (i != m_timestamp_deltas.begin())
                --i;
-       
+
        return i->second;
 }
 
@@ -132,24 +134,29 @@ int eMPEGStreamInformation::fixupPTS(const off_t &offset, pts_t &ts)
        if (!m_timestamp_deltas.size())
                return -1;
 
-       std::map<off_t, pts_t>::const_iterator i = m_access_points.upper_bound(offset - 4 * 1024 * 1024), nearest = m_access_points.end();
-       
-       while (i != m_access_points.end())
+       std::multimap<pts_t, off_t>::const_iterator 
+               l = m_pts_to_offset.upper_bound(ts - 60 * 90000), 
+               u = m_pts_to_offset.upper_bound(ts + 60 * 90000), 
+               nearest = m_pts_to_offset.end();
+
+       while (l != u)
        {
-               if ((nearest == m_access_points.end()) || (llabs(i->second - ts) < llabs(nearest->second - ts)))
-                       nearest = i;
-               ++i;
+               if ((nearest == m_pts_to_offset.end()) || (llabs(l->first - ts) < llabs(nearest->first - ts)))
+                       nearest = l;
+               ++l;
        }
-       if (nearest == m_access_points.end())
-               return -1;
-       ts -= getDelta(nearest->first);
+       if (nearest == m_pts_to_offset.end())
+               return 1;
+
+       ts -= getDelta(nearest->second);
+
        return 0;
 }
 
 int eMPEGStreamInformation::getPTS(off_t &offset, pts_t &pts)
 {
        std::map<off_t,pts_t>::iterator before = m_access_points.lower_bound(offset);
-       
+
                /* usually, we prefer the AP before the given offset. however if there is none, we take any. */
        if (before != m_access_points.begin())
                --before;
@@ -170,7 +177,6 @@ pts_t eMPEGStreamInformation::getInterpolated(off_t offset)
 {
                /* get the PTS values before and after the offset. */
        std::map<off_t,pts_t>::iterator before, after;
-       
        after = m_access_points.upper_bound(offset);
        before = after;
 
@@ -201,31 +207,45 @@ pts_t eMPEGStreamInformation::getInterpolated(off_t offset)
        return before_ts + diff;
 }
  
-off_t eMPEGStreamInformation::getAccessPoint(pts_t ts)
+off_t eMPEGStreamInformation::getAccessPoint(pts_t ts, int marg)
 {
                /* FIXME: more efficient implementation */
-       pts_t delta = 0;
        off_t last = 0;
+       off_t last2 = 0;
+       pts_t lastc = 0;
        for (std::map<off_t, pts_t>::const_iterator i(m_access_points.begin()); i != m_access_points.end(); ++i)
        {
                pts_t delta = getDelta(i->first);
                pts_t c = i->second - delta;
-               if (c > ts)
-                       break;
+               if (c > ts) {
+                       if (marg > 0)
+                               return (last + i->first)/376*188;
+                       else if (marg < 0)
+                               return (last + last2)/376*188;
+                       else
+                               return last;
+               }
+               lastc = c;
+               last2 = last;
                last = i->first;
        }
-       return last;
+       if (marg < 0)
+               return (last + last2)/376*188;
+       else
+               return last;
 }
 
 int eMPEGStreamInformation::getNextAccessPoint(pts_t &ts, const pts_t &start, int direction)
 {
        off_t offset = getAccessPoint(start);
+       pts_t c1, c2;
        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;
        }
+       c1 = i->second - getDelta(i->first);
        while (direction)
        {
                if (direction > 0)
@@ -233,6 +253,12 @@ int eMPEGStreamInformation::getNextAccessPoint(pts_t &ts, const pts_t &start, in
                        if (i == m_access_points.end())
                                return -1;
                        ++i;
+                       c2 = i->second - getDelta(i->first);
+                       if (c1 == c2) { // Discontinuity
+                               ++i;
+                               c2 = i->second - getDelta(i->first);
+                       }
+                       c1 = c2;
                        direction--;
                }
                if (direction < 0)
@@ -243,6 +269,12 @@ int eMPEGStreamInformation::getNextAccessPoint(pts_t &ts, const pts_t &start, in
                                return -1;
                        }
                        --i;
+                       c2 = i->second - getDelta(i->first);
+                       if (c1 == c2) { // Discontinuity
+                               --i;
+                               c2 = i->second - getDelta(i->first);
+                       }
+                       c1 = c2;
                        direction++;
                }
        }
@@ -333,19 +365,20 @@ int eMPEGStreamParserTS::processPacket(const unsigned char *pkt, off_t offset)
                        if (ptsvalid)
                        {
                                m_streaminfo.m_access_points[offset] = pts;
-                               eDebug("Sequence header at %llx, pts %llx", offset, pts);
+//                             eDebug("Sequence header at %llx, pts %llx", offset, pts);
                        } else
-                               eDebug("Sequence header but no valid PTS value.");
+                               /*eDebug("Sequence header but no valid PTS value.")*/;
                }
 
-               if (pkt[3] == 0x09) /* MPEG4 AVC unit access delimiter */
+               if (pkt[3] == 0x09 &&   /* MPEG4 AVC unit access delimiter */
+                        (pkt[4] >> 5) == 0) /* and I-frame */
                {
                        if (ptsvalid)
                        {
                                m_streaminfo.m_access_points[offset] = pts;
-                               eDebug("MPEG4 AVC UAD at %llx, pts %llx", offset, pts);
+//                             eDebug("MPEG4 AVC UAD at %llx, pts %llx", offset, pts);
                        } else
-                               eDebug("MPEG4 AVC UAD but no valid PTS value.");
+                               /*eDebug("MPEG4 AVC UAD but no valid PTS value.")*/;
                }
        }
        return 0;