void FirewireRecorder::AddData(const unsigned char *data, uint len)
{
uint bufsz = buffer.size();
if ((SYNC_BYTE == data[0]) && (TSPacket::kSize == len) &&
(TSPacket::kSize > bufsz))
{
if (bufsz)
buffer.clear();
ProcessTSPacket(*(reinterpret_cast<const TSPacket*>(data)));
return;
}
buffer.insert(buffer.end(), data, data + len);
bufsz += len;
int sync_at = -1;
for (uint i = 0; (i < bufsz) && (sync_at < 0); i++)
{
if (buffer[i] == SYNC_BYTE)
sync_at = i;
}
if (sync_at < 0)
return;
if (bufsz < 30 * TSPacket::kSize)
return; // build up a little buffer
while (sync_at + TSPacket::kSize < bufsz)
{
ProcessTSPacket(*(reinterpret_cast<const TSPacket*>(
&buffer[0] + sync_at)));
sync_at += TSPacket::kSize;
}
buffer.erase(buffer.begin(), buffer.begin() + sync_at);
return;
}
// ===================================================
// AddData : feed data from RTSP flow to mythtv
// ===================================================
void IPTVRecorder::AddData(const unsigned char *data, unsigned int dataSize)
{
unsigned int readIndex = 0;
// data may be compose from more than one packet, loop to consume all data
while (readIndex < dataSize)
{
// If recorder is paused, stop there
if (IsPaused())
return;
// Find the next TS Header in data
int tsPos = IPTVRecorder_findTSHeader(
data + readIndex, dataSize - readIndex);
// if no TS, something bad happens
if (tsPos == -1)
{
VERBOSE(VB_IMPORTANT, LOC_ERR + "No TS header.");
break;
}
// if TS Header not at start of data, we receive out of sync data
if (tsPos > 0)
{
VERBOSE(VB_IMPORTANT, LOC_ERR +
QString("TS packet at %1, not in sync.").arg(tsPos));
}
// Check if the next packet in buffer is complete :
// packet size is 188 bytes long
if ((dataSize - tsPos - readIndex) < TSPacket::SIZE)
{
VERBOSE(VB_IMPORTANT, LOC_ERR +
"TS packet at stradles end of buffer.");
break;
}
// Cast current found TS Packet to TSPacket structure
const void *newData = data + tsPos + readIndex;
ProcessTSPacket(*reinterpret_cast<const TSPacket*>(newData));
// follow to next packet
readIndex += tsPos + TSPacket::SIZE;
}
}
