/* getPTS extracts a pts value from any PID at a given offset. */
int eDVBTSTools::getPTS(off_t &offset, pts_t &pts, int fixed)
{
if (m_streaminfo.getPTS(offset, pts) == 0)
return 0; // Okay, the cache had it
if (m_streaminfo.hasStructure())
{
off_t local_offset = offset;
unsigned long long data;
if (m_streaminfo.getStructureEntryFirst(local_offset, data) == 0)
{
for(int retries = 8; retries != 0; --retries)
{
if ((data & 0x1000000) != 0)
{
pts = data >> 31;
if (pts == 0)
{
// obsolete data that happens to have a '1' there
continue;
}
eDebug("eDVBTSTools::getPTS got it from sc file offset=%llu pts=%llu", local_offset, pts);
if (fixed && fixupPTS(local_offset, pts))
{
eDebug("But failed to fixup!");
break;
}
offset = local_offset;
return 0;
}
else
{
eDebug("No PTS, try next");
}
if (m_streaminfo.getStructureEntryNext(local_offset, data, 1) != 0)
{
eDebug("Cannot find next structure entry");
break;
}
}
/* getPTS extracts a pts value from any PID at a given offset. */
int eDVBTSTools::getPTS(off_t &offset, pts_t &pts, int fixed)
{
if (m_use_streaminfo)
return m_streaminfo.getPTS(offset, pts);
if (!m_file.valid())
return -1;
offset -= offset % 188;
if (m_file.lseek(offset, SEEK_SET) < 0)
{
eDebug("lseek failed");
return -1;
}
int left = m_maxrange;
while (left >= 188)
{
unsigned char packet[188];
if (m_file.read(packet, 188) != 188)
{
eDebug("read error");
break;
}
left -= 188;
offset += 188;
if (packet[0] != 0x47)
{
eDebug("resync");
int i = 0;
while (i < 188)
{
if (packet[i] == 0x47)
break;
++i;
}
offset = m_file.lseek(i - 188, SEEK_CUR);
continue;
}
int pid = ((packet[1] << 8) | packet[2]) & 0x1FFF;
int pusi = !!(packet[1] & 0x40);
// printf("PID %04x, PUSI %d\n", pid, pusi);
unsigned char *payload;
/* check for adaption field */
if (packet[3] & 0x20)
{
if (packet[4] >= 183)
continue;
if (packet[4])
{
if (packet[5] & 0x10) /* PCR present */
{
pts = ((unsigned long long)(packet[ 6]&0xFF)) << 25;
pts |= ((unsigned long long)(packet[ 7]&0xFF)) << 17;
pts |= ((unsigned long long)(packet[ 8]&0xFE)) << 9;
pts |= ((unsigned long long)(packet[ 9]&0xFF)) << 1;
pts |= ((unsigned long long)(packet[10]&0x80)) >> 7;
offset -= 188;
eDebug("PCR found at %llx: %16llx", offset, pts);
if (fixed && fixupPTS(offset, pts))
return -1;
return 0;
}
}
payload = packet + packet[4] + 4 + 1;
} else
