void CMpegSplitterFile::SearchPrograms(__int64 start, __int64 stop)
{
if (m_type != mpeg_ts) {
return;
}
Seek(start);
stop = min(stop, GetLength());
while (GetPos() < stop) {
tshdr h;
if (!Read(h)) {
continue;
}
UpdatePrograms(h);
Seek(h.next);
}
}
HRESULT CMpegSplitterFile::SearchStreams(__int64 start, __int64 stop)
{
Seek(start);
stop = min(stop, GetLength());
while(GetPos() < stop)
{
BYTE b;
if(m_type == ps || m_type == es)
{
if(!NextMpegStartCode(b)) continue;
if(b == 0xba) // program stream header
{
pshdr h;
if(!Read(h)) continue;
}
else if(b == 0xbb) // program stream system header
{
pssyshdr h;
if(!Read(h)) continue;
}
#if (EVO_SUPPORT == 0)
else if(b >= 0xbd && b < 0xf0) // pes packet
#else
else if((b >= 0xbd && b < 0xf0) || (b == 0xfd)) // pes packet
#endif
{
peshdr h;
if(!Read(h, b)) continue;
if(h.type == mpeg2 && h.scrambling) {ASSERT(0); return E_FAIL;}
if(h.fpts)
{
if(m_rtMin == _I64_MAX) {m_rtMin = h.pts; m_posMin = GetPos();}
if(m_rtMin < h.pts && m_rtMax < h.pts) {m_rtMax = h.pts; m_posMax = GetPos();}
/*
int rate = 10000000i64 * (m_posMax - m_posMin) / (m_rtMax - m_rtMin);
if(m_rate == 0) m_rate = rate;
TRACE(_T("rate = %d (%d), (h.pts = %I64d)\n"), rate, rate - m_rate, h.pts);
m_rate = rate;
*/
}
__int64 pos = GetPos();
AddStream(0, b, h.len);
if(h.len) Seek(pos + h.len);
}
}
else if(m_type == ts)
{
trhdr h;
if(!Read(h)) continue;
// if(h.scrambling) {ASSERT(0); return E_FAIL;}
__int64 pos = GetPos();
if(h.payload && h.payloadstart)
{
UpdatePrograms(h);
}
if(h.payload && ISVALIDPID(h.pid))
{
peshdr h2;
if(h.payloadstart && NextMpegStartCode(b, 4) && Read(h2, b)) // pes packet
{
if(h2.type == mpeg2 && h2.scrambling) {
ASSERT(0);
return E_FAIL;
}
if(h2.fpts)
{
if(m_rtMin == _I64_MAX) {m_rtMin = h2.pts; m_posMin = GetPos();}
if(m_rtMin < h2.pts && m_rtMax < h2.pts) {m_rtMax = h2.pts; m_posMax = GetPos();}
}
}
else
{
b = 0;
}
AddStream(h.pid, b, DWORD(h.bytes - (GetPos() - pos)));
}
Seek(h.next);
}
else if(m_type == pva)
{
pvahdr h;
if(!Read(h)) continue;
if(h.fpts)
{
if(m_rtMin == _I64_MAX) {m_rtMin = h.pts; m_posMin = GetPos();}
if(m_rtMin < h.pts && m_rtMax < h.pts) {m_rtMax = h.pts; m_posMax = GetPos();}
}
__int64 pos = GetPos();
if(h.streamid == 1) AddStream(h.streamid, 0xe0, h.length);
else if(h.streamid == 2) AddStream(h.streamid, 0xc0, h.length);
if(h.length) Seek(pos + h.length);
}
}
