diff options
Diffstat (limited to 'lib/dvb/tstools.cpp')
| -rw-r--r-- | lib/dvb/tstools.cpp | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/lib/dvb/tstools.cpp b/lib/dvb/tstools.cpp index d5ad2494..a0e4eb15 100644 --- a/lib/dvb/tstools.cpp +++ b/lib/dvb/tstools.cpp @@ -698,9 +698,23 @@ int eDVBTSTools::findFrame(off_t &_offset, size_t &len, int &direction, int fram else if (direction == +1) direction = 0; } - /* let's find the next frame after the given offset */ off_t start = offset; + /* backtrack to find the previous sequence start, in case of MPEG2 */ + if ((data & 0xFF) == 0x00) { + do { + --start; + if (m_streaminfo.getStructureEntry(start, data, 0)) + { + eDebug("get previous failed"); + return -1; + } + } while (((data & 0xFF) != 9) && ((data & 0xFF) != 0x00) && ((data & 0xFF) != 0xB3)); /* sequence start or previous frame */ + if ((data & 0xFF) != 0xB3) + start = offset; /* Failed to find corresponding sequence start, so never mind */ + } + + /* let's find the next frame after the given offset */ do { if (m_streaminfo.getStructureEntry(offset, data, 1)) { @@ -716,8 +730,8 @@ int eDVBTSTools::findFrame(off_t &_offset, size_t &len, int &direction, int fram } while (((data & 0xFF) != 9) && ((data & 0xFF) != 0x00)); /* next frame */ /* align to TS pkt start */ -// start = start - (start % 188); -// offset = offset - (offset % 188); + start = start - (start % 188); + offset = offset - (offset % 188); len = offset - start; _offset = start; |