/// <summary>
/// Decodes the PMT supplied in buf and fills the pid table with all pids found
/// </summary>
/// <param name="buf">The buf.</param>
public void DecodePmt(byte[] buf)
{
if (buf.Length < 13)
{
//Log.Log.WriteFile("decodePMTTable() len < 13 len={0}", buf.Length);
return;
}
int section_length = ((buf[1] & 0xF) << 8) + buf[2];
int programNumber = (buf[3] << 8) + buf[4];
int version_number = ((buf[5] >> 1) & 0x1F);
int current_next_indicator = buf[5] & 1;
pcrPid = ((buf[8] & 0x1F) << 8) + buf[9]; // ! really set pcr pid ! ( ambass )
int program_info_length = ((buf[10] & 0xF) << 8) + buf[11];
caPMT = new CaPMT();
caPMT.ProgramNumber = programNumber;
caPMT.CurrentNextIndicator = current_next_indicator;
caPMT.VersionNumber = version_number;
caPMT.CAPmt_Listmanagement = ListManagementType.Only;
//if (pat.program_number != program_number)
//{
//Log.Write("decodePMTTable() pat program#!=program numer {0}!={1}", pat.program_number, program_number);
//return 0;
//}
//pat.pid_list = new ArrayList();
//string pidText = "";
int pointer = 12;
int x;
int len1 = section_length - pointer;
int len2 = program_info_length;
Log.Log.Write("Decode pmt");
while (len2 > 0)
{
if (pointer + 2 > buf.Length)
{
break;
}
int indicator = buf[pointer];
x = buf[pointer + 1] + 2;
byte[] data = new byte[x];
if (pointer + x > buf.Length)
{
break;
}
Array.Copy(buf, pointer, data, 0, x);
if (indicator == 0x9) //MPEG CA Descriptor
{
//Log.Log.Write(" descriptor1:{0:X} len:{1} {2:X} {3:X}", indicator,data.Length,buf[pointer],buf[pointer+1]);
caPMT.Descriptors.Add(data);
caPMT.ProgramInfoLength += data.Length;
scrambled = true; // if there is a CA Descriptor, the stream is scrambled
//string tmpString = DVB_CADescriptor(data);
//if (pidText.IndexOf(tmpString, 0) == -1)
// pidText += tmpString + ";";
string tmp = "";
for (int teller = 0; teller < x; ++teller)
{
tmp += String.Format("{0:x} ", buf[pointer + teller]);
}
Log.Log.Info("descr1 len:{0:X} {1}", x, tmp);
}
len2 -= x;
pointer += x;
len1 -= x;
}
if (caPMT.ProgramInfoLength > 0)
{
caPMT.CommandId = CommandIdType.Descrambling;
caPMT.ProgramInfoLength += 1;
}
//byte[] b = new byte[6];
PidInfo pidInfo;
while (len1 > 4)
{
if (pointer + 5 > section_length)
{
break;
}
pidInfo = new PidInfo();
//System.Array.Copy(buf, pointer, b, 0, 5);
try
{
pidInfo.stream_type = buf[pointer];
pidInfo.reserved_1 = (buf[pointer + 1] >> 5) & 7;
pidInfo.pid = ((buf[pointer + 1] & 0x1F) << 8) + buf[pointer + 2];
pidInfo.reserved_2 = (buf[pointer + 3] >> 4) & 0xF;
pidInfo.ES_info_length = ((buf[pointer + 3] & 0xF) << 8) + buf[pointer + 4];
}
catch (Exception ex)
{
Log.Log.WriteFile("Error while decoding pmt: ", ex);
}
switch (pidInfo.stream_type)
{
case 0x1b: //H.264
pidInfo.isVideo = true;
break;
case 0x24: //HEVC
pidInfo.isVideo = true;
break;
case 0x10: //MPEG4 ISO/IEC 14496-2
pidInfo.isVideo = true;
break;
case 0x1: //MPEG-1 VIDEO ISO/IEC 11172
pidInfo.isVideo = true;
break;
case 0x2:
//MPEG-2 VIDEO ITU-T Rec. H.262 | ISO/IEC 13818-2 Video or ISO/IEC 11172-2 constrained parameter video stream
pidInfo.isVideo = true;
break;
case 0x3: //MPEG-1 AUDIO ISO/IEC 11172
pidInfo.isAudio = true;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
break;
case 0x4: //MPEG-3 AUDIO ISO/IEC 13818-3
pidInfo.isAudio = true;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
break;
case 0x81: //AC3 AUDIO
pidInfo.isAudio = false;
pidInfo.isAC3Audio = true;
break;
case 0x0f: //AAC AUDIO
pidInfo.isAudio = true;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
break;
case 0x11: //LATM AAC AUDIO
pidInfo.isAudio = true;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
break;
}
pointer += 5;
len1 -= 5;
len2 = pidInfo.ES_info_length;
CaPmtEs pmtEs = new CaPmtEs();
pmtEs.StreamType = pidInfo.stream_type;
pmtEs.ElementaryStreamPID = pidInfo.pid;
pmtEs.CommandId = CommandIdType.Descrambling;
if (len1 > 0)
{
while (len2 > 0)
{
if (pointer + 1 < buf.Length)
{
int indicator = buf[pointer];
x = buf[pointer + 1] + 2;
//Log.Log.Write(" descriptor2:{0:X}", indicator);
if (x + pointer < buf.Length) // parse descriptor data
{
byte[] data = new byte[x];
Array.Copy(buf, pointer, data, 0, x);
switch (indicator)
{
case 0x02: // video
pidInfo.isAudio = false;
pidInfo.isVideo = true;
pidInfo.isTeletext = false;
pidInfo.isDVBSubtitle = false;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
break;
case 0x03: // audio
//Log.Write("dvbsections: indicator {1} {0} found",(indicator==0x02?"for video":"for audio"),indicator);
pidInfo.isAudio = true;
pidInfo.isVideo = false;
pidInfo.isTeletext = false;
pidInfo.isDVBSubtitle = false;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
pidInfo.stream_type = 0x03;
break;
case 0x09: //MPEG CA Descriptor
pmtEs.Descriptors.Add(data);
pmtEs.ElementaryStreamInfoLength += data.Length;
string tmp = "";
for (int teller = 0; teller < x; ++teller)
{
tmp += String.Format("{0:x} ", buf[pointer + teller]);
}
Log.Log.Info("descr2 pid:{0:X} len:{1:X} {2}", pmtEs.ElementaryStreamPID, x, tmp);
scrambled = true; // if there is a CA Descriptor, the stream is scrambled
break;
case 0x0A: //MPEG_ISO639_Lang
pidInfo.language = DVB_GetMPEGISO639Lang(data);
pidInfo.AddDescriptorData(data); // remember the original descriptor
break;
case 0x52: //stream identifier
pidInfo.AddDescriptorData(data);
break;
case 0x6A: //AC3
pidInfo.isAudio = false;
pidInfo.isVideo = false;
pidInfo.isTeletext = false;
pidInfo.isDVBSubtitle = false;
pidInfo.isAC3Audio = true;
pidInfo.isEAC3Audio = false;
pidInfo.stream_type = 0x81;
break;
case 0x7A: //E-AC3
pidInfo.isAudio = false;
pidInfo.isVideo = false;
pidInfo.isTeletext = false;
pidInfo.isDVBSubtitle = false;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = true;
pidInfo.stream_type = 0x84;
break;
case 0x56: //teletext
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
pidInfo.isAudio = false;
pidInfo.isVideo = false;
pidInfo.isTeletext = true;
pidInfo.isDVBSubtitle = false;
pidInfo.stream_type = 0x6; // Ziphnor
pidInfo.AddDescriptorData(data); // remember the original descriptor
pidInfo.teletextLANG = DVB_GetTeletextDescriptor(data);
break;
//case 0xc2:
case 0x59: // DVB ssubtitle
if (pidInfo.stream_type == 0x05 || pidInfo.stream_type == 0x06)
{
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
pidInfo.isAudio = false;
pidInfo.isVideo = false;
pidInfo.isTeletext = false;
pidInfo.isDVBSubtitle = true;
pidInfo.stream_type = 0x6;
pidInfo.AddDescriptorData(data);
pidInfo.language = DVB_SubtitleDescriptior(data);
}
break;
default:
pidInfo.language = "";
break;
}
}
}
else
{
break;
}
len2 -= x;
len1 -= x;
pointer += x;
}
}
if (pidInfo.isVideo || pidInfo.isAC3Audio || pidInfo.isEAC3Audio || pidInfo.isAudio)
{
if (pmtEs.ElementaryStreamInfoLength > 0)
{
pmtEs.CommandId = CommandIdType.Descrambling;
pmtEs.ElementaryStreamInfoLength += 1;
}
caPMT.CaPmtEsList.Add(pmtEs);
}
pids.Add(pidInfo);
}
//pat.pidCache = pidText;
//caPMT.Dump();
}
/// <summary>
/// Decodes the PMT supplied in buf and fills the pid table with all pids found
/// </summary>
/// <param name="buf">The buf.</param>
public void DecodePmt(byte[] buf)
{
if (buf.Length < 13)
{
//Log.Log.WriteFile("decodePMTTable() len < 13 len={0}", buf.Length);
return;
}
int section_length = ((buf[1] & 0xF) << 8) + buf[2];
int programNumber = (buf[3] << 8) + buf[4];
int version_number = ((buf[5] >> 1) & 0x1F);
int current_next_indicator = buf[5] & 1;
pcrPid = ((buf[8] & 0x1F) << 8) + buf[9]; // ! really set pcr pid ! ( ambass )
int program_info_length = ((buf[10] & 0xF) << 8) + buf[11];
caPMT = new CaPMT();
caPMT.ProgramNumber = programNumber;
caPMT.CurrentNextIndicator = current_next_indicator;
caPMT.VersionNumber = version_number;
caPMT.CAPmt_Listmanagement = ListManagementType.Only;
//if (pat.program_number != program_number)
//{
//Log.Write("decodePMTTable() pat program#!=program numer {0}!={1}", pat.program_number, program_number);
//return 0;
//}
//pat.pid_list = new ArrayList();
//string pidText = "";
int pointer = 12;
int x;
int len1 = section_length - pointer;
int len2 = program_info_length;
Log.Log.Write("Decode pmt");
while (len2 > 0)
{
if (pointer + 2 > buf.Length)
break;
int indicator = buf[pointer];
x = buf[pointer + 1] + 2;
byte[] data = new byte[x];
if (pointer + x > buf.Length)
break;
Array.Copy(buf, pointer, data, 0, x);
if (indicator == 0x9) //MPEG CA Descriptor
{
//Log.Log.Write(" descriptor1:{0:X} len:{1} {2:X} {3:X}", indicator,data.Length,buf[pointer],buf[pointer+1]);
caPMT.Descriptors.Add(data);
caPMT.ProgramInfoLength += data.Length;
scrambled = true; // if there is a CA Descriptor, the stream is scrambled
//string tmpString = DVB_CADescriptor(data);
//if (pidText.IndexOf(tmpString, 0) == -1)
// pidText += tmpString + ";";
string tmp = "";
for (int teller = 0; teller < x; ++teller)
tmp += String.Format("{0:x} ", buf[pointer + teller]);
Log.Log.Info("descr1 len:{0:X} {1}", x, tmp);
}
len2 -= x;
pointer += x;
len1 -= x;
}
if (caPMT.ProgramInfoLength > 0)
{
caPMT.CommandId = CommandIdType.Descrambling;
caPMT.ProgramInfoLength += 1;
}
//byte[] b = new byte[6];
PidInfo pidInfo;
while (len1 > 4)
{
if (pointer + 5 > section_length)
break;
pidInfo = new PidInfo();
//System.Array.Copy(buf, pointer, b, 0, 5);
try
{
pidInfo.stream_type = buf[pointer];
pidInfo.reserved_1 = (buf[pointer + 1] >> 5) & 7;
pidInfo.pid = ((buf[pointer + 1] & 0x1F) << 8) + buf[pointer + 2];
pidInfo.reserved_2 = (buf[pointer + 3] >> 4) & 0xF;
pidInfo.ES_info_length = ((buf[pointer + 3] & 0xF) << 8) + buf[pointer + 4];
}
catch (Exception ex)
{
Log.Log.WriteFile("Error while decoding pmt: ", ex);
}
switch (pidInfo.stream_type)
{
case 0x1b: //H.264
pidInfo.isVideo = true;
break;
case 0x10: //MPEG4 ISO/IEC 14496-2
pidInfo.isVideo = true;
break;
case 0x1: //MPEG-1 VIDEO ISO/IEC 11172
pidInfo.isVideo = true;
break;
case 0x2:
//MPEG-2 VIDEO ITU-T Rec. H.262 | ISO/IEC 13818-2 Video or ISO/IEC 11172-2 constrained parameter video stream
pidInfo.isVideo = true;
break;
case 0x3: //MPEG-1 AUDIO ISO/IEC 11172
pidInfo.isAudio = true;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
break;
case 0x4: //MPEG-3 AUDIO ISO/IEC 13818-3
pidInfo.isAudio = true;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
break;
case 0x81: //AC3 AUDIO
pidInfo.isAudio = false;
pidInfo.isAC3Audio = true;
break;
case 0x0f: //AAC AUDIO
pidInfo.isAudio = true;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
break;
case 0x11: //LATM AAC AUDIO
pidInfo.isAudio = true;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
break;
}
pointer += 5;
len1 -= 5;
len2 = pidInfo.ES_info_length;
CaPmtEs pmtEs = new CaPmtEs();
pmtEs.StreamType = pidInfo.stream_type;
pmtEs.ElementaryStreamPID = pidInfo.pid;
pmtEs.CommandId = CommandIdType.Descrambling;
if (len1 > 0)
{
while (len2 > 0)
{
if (pointer + 1 < buf.Length)
{
int indicator = buf[pointer];
x = buf[pointer + 1] + 2;
//Log.Log.Write(" descriptor2:{0:X}", indicator);
if (x + pointer < buf.Length) // parse descriptor data
{
byte[] data = new byte[x];
Array.Copy(buf, pointer, data, 0, x);
switch (indicator)
{
case 0x02: // video
pidInfo.isAudio = false;
pidInfo.isVideo = true;
pidInfo.isTeletext = false;
pidInfo.isDVBSubtitle = false;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
break;
case 0x03: // audio
//Log.Write("dvbsections: indicator {1} {0} found",(indicator==0x02?"for video":"for audio"),indicator);
pidInfo.isAudio = true;
pidInfo.isVideo = false;
pidInfo.isTeletext = false;
pidInfo.isDVBSubtitle = false;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
pidInfo.stream_type = 0x03;
break;
case 0x09: //MPEG CA Descriptor
pmtEs.Descriptors.Add(data);
pmtEs.ElementaryStreamInfoLength += data.Length;
string tmp = "";
for (int teller = 0; teller < x; ++teller)
tmp += String.Format("{0:x} ", buf[pointer + teller]);
Log.Log.Info("descr2 pid:{0:X} len:{1:X} {2}", pmtEs.ElementaryStreamPID, x, tmp);
scrambled = true; // if there is a CA Descriptor, the stream is scrambled
break;
case 0x0A: //MPEG_ISO639_Lang
pidInfo.language = DVB_GetMPEGISO639Lang(data);
pidInfo.AddDescriptorData(data); // remember the original descriptor
break;
case 0x52: //stream identifier
pidInfo.AddDescriptorData(data);
break;
case 0x6A: //AC3
pidInfo.isAudio = false;
pidInfo.isVideo = false;
pidInfo.isTeletext = false;
pidInfo.isDVBSubtitle = false;
pidInfo.isAC3Audio = true;
pidInfo.isEAC3Audio = false;
pidInfo.stream_type = 0x81;
break;
case 0x7A: //E-AC3
pidInfo.isAudio = false;
pidInfo.isVideo = false;
pidInfo.isTeletext = false;
pidInfo.isDVBSubtitle = false;
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = true;
pidInfo.stream_type = 0x84;
break;
case 0x56: //teletext
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
pidInfo.isAudio = false;
pidInfo.isVideo = false;
pidInfo.isTeletext = true;
pidInfo.isDVBSubtitle = false;
pidInfo.stream_type = 0x6; // Ziphnor
pidInfo.AddDescriptorData(data); // remember the original descriptor
pidInfo.teletextLANG = DVB_GetTeletextDescriptor(data);
break;
//case 0xc2:
case 0x59: // DVB ssubtitle
if (pidInfo.stream_type == 0x05 || pidInfo.stream_type == 0x06)
{
pidInfo.isAC3Audio = false;
pidInfo.isEAC3Audio = false;
pidInfo.isAudio = false;
pidInfo.isVideo = false;
pidInfo.isTeletext = false;
pidInfo.isDVBSubtitle = true;
pidInfo.stream_type = 0x6;
pidInfo.AddDescriptorData(data);
pidInfo.language = DVB_SubtitleDescriptior(data);
}
break;
default:
pidInfo.language = "";
break;
}
}
}
else
{
break;
}
len2 -= x;
len1 -= x;
pointer += x;
}
}
if (pidInfo.isVideo || pidInfo.isAC3Audio || pidInfo.isEAC3Audio || pidInfo.isAudio)
{
if (pmtEs.ElementaryStreamInfoLength > 0)
{
pmtEs.CommandId = CommandIdType.Descrambling;
pmtEs.ElementaryStreamInfoLength += 1;
}
caPMT.CaPmtEsList.Add(pmtEs);
}
pids.Add(pidInfo);
}
//pat.pidCache = pidText;
//caPMT.Dump();
}