public void ParseServiceMultiplexConfigTable(int offset, Stream _stream)
{
// 开始解析复用配置表
_stream.Seek(offset, SeekOrigin.Begin);
_stream.Seek(3, SeekOrigin.Current);
// 读取Multiplex frame number, (6 bit)
byte[] tmp = new byte[4];
_stream.Read(tmp, 0, 1);
_msConfigTable = new ContinualServiceConfigTable();
_msConfigTable.mpFameNum = (uint)BitTools.MaskBits(tmp, 2, 6);
_msConfigTable.mfConfigTables = new List <MUXConfigTable>();
for (int i = 0; i < _msConfigTable.mpFameNum; i++)
{
//读取每个MF的信息配置表，RS, LDPC, mode
MUXConfigTable mftmp = new MUXConfigTable();
_stream.Read(tmp, 0, 1);
mftmp.RSCodec = (uint)BitTools.MaskBits(tmp, 6, 2);
_stream.Read(tmp, 0, 2);
mftmp.LDPC = (uint)BitTools.MaskBits(tmp, 2, 2);
mftmp.mode = (uint)BitTools.MaskBits(tmp, 4, 2);
mftmp.TS_num = (uint)BitTools.MaskBits(tmp, 10, 6);
_msConfigTable.mfConfigTables.Add(mftmp);
for (int j = 0; j < mftmp.TS_num; j++)
{
// skip 时隙号 和 保留，1 byte
_stream.Seek(1, SeekOrigin.Current);
}
//读复用子帧数
_stream.Read(tmp, 0, 1);
int subnumber = BitTools.MaskBits(tmp, 4, 4);
for (int m = 0; m < subnumber; m++)
{
// skip 子帧号，。。。3 bytes
_stream.Seek(3, SeekOrigin.Current);
}
}
// skip CRC_32
_stream.Seek(CRC_Size, SeekOrigin.Current);
}
public uint MFLengthLookupTable(MUXConfigTable c)
{
if (c.LDPC == 0 &&
c.RSCodec == 1 &&
c.mode == 1)
{
return(129024 * c.TS_num / 8);
}
if (c.LDPC == 0 &&
c.RSCodec == 0 &&
c.mode == 0)
{
// MF 长度
return(69120 * c.TS_num / 8);
}
return(0);
}
public void ParseServiceMultiplexConfigTable(int offset, Stream _stream)
{
// 开始解析复用配置表
_stream.Seek(offset, SeekOrigin.Begin);
_stream.Seek(3, SeekOrigin.Current);
// 读取Multiplex frame number, (6 bit)
byte[] tmp = new byte[4];
_stream.Read(tmp, 0, 1);
_msConfigTable = new ContinualServiceConfigTable();
_msConfigTable.mpFameNum = (uint)BitTools.MaskBits(tmp, 2, 6);
_msConfigTable.mfConfigTables = new List<MUXConfigTable>();
for (int i = 0; i < _msConfigTable.mpFameNum; i++)
{
//读取每个MF的信息配置表，RS, LDPC, mode
MUXConfigTable mftmp = new MUXConfigTable();
_stream.Read(tmp, 0, 1);
mftmp.RSCodec = (uint)BitTools.MaskBits(tmp, 6, 2);
_stream.Read(tmp, 0, 2);
mftmp.LDPC = (uint)BitTools.MaskBits(tmp, 2, 2);
mftmp.mode = (uint)BitTools.MaskBits(tmp, 4, 2);
mftmp.TS_num = (uint)BitTools.MaskBits(tmp, 10, 6);
_msConfigTable.mfConfigTables.Add(mftmp);
for (int j = 0; j < mftmp.TS_num; j++)
{
// skip 时隙号 和 保留，1 byte
_stream.Seek(1, SeekOrigin.Current);
}
//读复用子帧数
_stream.Read(tmp, 0, 1);
int subnumber = BitTools.MaskBits(tmp, 4, 4);
for (int m = 0; m < subnumber; m++)
{
// skip 子帧号，。。。3 bytes
_stream.Seek(3, SeekOrigin.Current);
}
}
// skip CRC_32
_stream.Seek(CRC_Size, SeekOrigin.Current);
}
public uint MFLengthLookupTable(MUXConfigTable c)
{
if (c.LDPC == 0
&& c.RSCodec == 1
&& c.mode == 1)
{
return 129024 * c.TS_num / 8;
}
if (c.LDPC == 0
&& c.RSCodec == 0
&& c.mode == 0)
{
// MF 长度
return 69120 * c.TS_num / 8;
}
return 0;
}
