if (!m_access_points.size())
return;
- eDebug("Fixing discontinuities ...");
+// eDebug("Fixing discontinuities ...");
/* if we have no delta at the beginning, extrapolate it */
if ((m_access_points.find(0) == m_access_points.end()) && (m_access_points.size() > 1))
tdiff *= first->first;
tdiff /= diff;
m_timestamp_deltas[0] = first->second - tdiff;
- eDebug("first delta is %08llx", first->second - tdiff);
+// eDebug("first delta is %08llx", first->second - tdiff);
}
}
if (llabs(diff) > (90000*5)) // 5sec diff
{
- eDebug("%llx < %llx, have discont. new timestamp is %llx (diff is %llx)!", current, lastpts_t, i->second, diff);
+// eDebug("%llx < %llx, have discont. new timestamp is %llx (diff is %llx)!", current, lastpts_t, i->second, diff);
currentDelta = i->second - lastpts_t; /* FIXME: should be the extrapolated new timestamp, based on the current rate */
- eDebug("current delta now %llx, making current to %llx", currentDelta, i->second - currentDelta);
+// eDebug("current delta now %llx, making current to %llx", currentDelta, i->second - currentDelta);
m_timestamp_deltas[i->first] = currentDelta;
}
lastpts_t = i->second - currentDelta;
}
- eDebug("ok, found %d disconts.", m_timestamp_deltas.size());
+// eDebug("ok, found %d disconts.", m_timestamp_deltas.size());
#if 0
for (off_t x=0x25807E34ULL; x < 0x25B3CF70; x+= 100000)
off_t last = 0;
for (std::map<off_t, pts_t>::const_iterator i(m_access_points.begin()); i != m_access_points.end(); ++i)
{
- std::map<off_t, pts_t>::const_iterator d = m_timestamp_deltas.find(i->first);
- if (d != m_timestamp_deltas.end())
- delta = d->second;
+ pts_t delta = getDelta(i->first);
pts_t c = i->second - delta;
if (c > ts)
break;
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)
{
}
/* advance to payload */
pkt += pkt[8] + 9;
-
+
+ /* sometimes, there are zeros before the startcode. */
+ while (pkt < (end-4))
+ if (pkt[0] || pkt[1] || pkt[2])
+ break;
+ else
+ pkt++;
+
/* if startcode found */
+// eDebug("%02x %02x %02x %02x", pkt[0], pkt[1], pkt[2], pkt[3]);
if (!(pkt[0] || pkt[1] || (pkt[2] != 1)))
{
if (pkt[3] == 0xb3) /* sequence header */
} else
eDebug("Sequence header but no valid PTS value.");
}
+
+ if (pkt[3] == 0x09) /* MPEG4 AVC unit access delimiter */
+ {
+ if (ptsvalid)
+ {
+ m_streaminfo.m_access_points[offset] = pts;
+ eDebug("MPEG4 AVC UAD at %llx, pts %llx", offset, pts);
+ } else
+ eDebug("MPEG4 AVC UAD but no valid PTS value.");
+ }
}
return 0;
}
/* sorry for the redundant code here, but there are too many special cases... */
while (len)
{
+ /* emergency resync. usually, this should not happen, because the data should
+ be sync-aligned.
+
+ to make this code work for non-strictly-sync-aligned data, (for example, bad
+ files) we fix a possible resync here by skipping data until the next 0x47.
+
+ if this is a false 0x47, the packet will be dropped by wantPacket, and the
+ next time, sync will be re-established. */
+ int skipped = 0;
+ while (!m_pktptr && len)
+ {
+ if (packet[0] == 0x47)
+ break;
+ len--;
+ packet++;
+ skipped++;
+ }
+
+ if (skipped)
+ eDebug("SYNC LOST: skipped %d bytes.", skipped);
+
+ if (!len)
+ break;
+
if (m_pktptr)
{
/* skip last packet */