private Int64 GetCurrentPcrFromFile()
{
int packetSize = 0;
if (fileType == TsFileType.TS)
packetSize = Constants.TS_SIZE;
else if (fileType == TsFileType.M2TS)
packetSize = Constants.STRIDE_SIZE;
byte[] inBuff = new byte[packetSize];
TsPacket tp = new TsPacket();
Int64 filePos = fs.Position;
while (fs.Read(inBuff, 0, packetSize) == packetSize && fs.Position < (filePos + 1000000))
{
if (packetSize == Constants.STRIDE_SIZE)
tp.SetData(inBuff, 4);
else if (packetSize == Constants.TS_SIZE)
tp.SetData(inBuff, 0);
if (tp.HasPcr)
{
fs.Seek(filePos, SeekOrigin.Begin);
return tp.Pcr;
}
}
return -1;
}
private void MuxPesPacketToTs(PesPacket pp, bool priority)
{
byte[] data = new byte[Constants.TS_SIZE];
int j = 0;
int i = 0;
byte[] pes = pp.GetData();
// take care of the first packet
data[0] = Constants.SYNC_BYTE;
data[1] = 0x40; // payload start
data[2] = 0;
if (pes.Length < Constants.TS_PAYLOAD_SIZE)
{
data[3] = 0x30; // adaptation and payload
int stufLength = Constants.TS_PAYLOAD_SIZE - pes.Length - 1;
data[4] = (byte)stufLength;
i = 5;
if (stufLength > 0)
{
data[i] = 0;
i++;
stufLength--;
}
for (; i < (6 + stufLength); i++)
data[i] = 0xff;
for (; i < Constants.TS_SIZE; i++)
{
data[i] = pes[j];
j++;
}
}
else
{
data[3] = 0x10; // no adaptation, payload only
for (i = 4; i < data.Length; i++)
{
data[i] = pes[j];
j++;
}
}
TsPacket ts = new TsPacket();
ts.SetData(data, 0);
ushort pid = pidMappings[pp.PID];
ts.PID = pid;
ts.Priority = priority;
ts.ContinuityCounter = Continuities[pid];
ts.IncrementContinuityCounter();
Continuities[pid] = ts.ContinuityCounter;
buffer.Add(ts);
while (j < ((pes.Length / Constants.TS_PAYLOAD_SIZE) * Constants.TS_PAYLOAD_SIZE))
{
// take care of the other packets
data[0] = Constants.SYNC_BYTE;
data[1] = 0x00; // no payload start
data[2] = 0;
data[3] = 0x10; // no adaptation, payload only
for (i = 4; i < data.Length; i++)
{
data[i] = pes[j];
j++;
}
ts = new TsPacket();
ts.SetData(data, 0);
ts.PID = pid;
ts.Priority = priority;
ts.ContinuityCounter = Continuities[pid];
ts.IncrementContinuityCounter();
Continuities[pid] = ts.ContinuityCounter;
buffer.Add(ts);
}
// take care of the last packet
if (j < pes.Length)
{
data[0] = Constants.SYNC_BYTE;
data[1] = 0x00; // no payload start
data[2] = 0;
data[3] = 0x30; // adaptation and payload
int stufLength = Constants.TS_PAYLOAD_SIZE - (pes.Length - j) - 1;
data[4] = (byte)stufLength;
i = 5;
if (stufLength > 0)
{
data[i] = 0;
i++;
stufLength--;
for (; i < (6 + stufLength); i++)
data[i] = 0xff;
}
for (; i < Constants.TS_SIZE; i++)
{
data[i] = pes[j];
j++;
}
ts = new TsPacket();
ts.SetData(data, 0);
ts.PID = pid;
ts.Priority = priority;
ts.ContinuityCounter = Continuities[pid];
ts.IncrementContinuityCounter();
Continuities[pid] = ts.ContinuityCounter;
buffer.Add(ts);
}
}
public TsPesFile(BackgroundWorker bw, int offset)
: base(bw)
{
stride = offset;
tsPack = new byte[Constants.TS_SIZE + offset];
ts = new TsPacket();
PesPackets = new Dictionary<ushort, PesPacket>();
dt = null;
pcrPID = 0xffff;
}