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Added track language support to TS and DTSC internals

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This commit is contained in:
Thulinma 2016-07-13 11:43:41 +02:00
parent a73f97e065
commit 3844dac4fd
4 changed files with 127 additions and 6 deletions
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94
lib/ts_packet.cpp
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@ -989,17 +989,85 @@ namespace TS {
while (entry) {
output << std::string(indent + 4, ' ');
stream_pids[entry.getElementaryPid()] = entry.getCodec() + std::string(" ") + entry.getStreamTypeString();
output << "Stream " << entry.getElementaryPid() << ": " << stream_pids[entry.getElementaryPid()] << " (" << entry.getStreamType() << "), Info (" << entry.getESInfoLength() << ") = ";
for (unsigned int i = 0; i<entry.getESInfoLength(); ++i){
output << std::hex << std::setw(2) << std::setfill('0') << std::uppercase << (int)entry.getESInfo()[i] << std::dec;
}
output << std::endl;
output << "Stream " << entry.getElementaryPid() << ": " << stream_pids[entry.getElementaryPid()] << " (" << entry.getStreamType() << ")" << std::endl;
output << ProgramDescriptors(entry.getESInfo(), entry.getESInfoLength()).toPrettyString(indent+6);
entry.advance();
}
output << std::string(indent + 2, ' ') << "CRC32: " << std::hex << std::setw(8) << std::setfill('0') << std::uppercase << getCRC() << std::dec << std::endl;
return output.str();
}
ProgramDescriptors::ProgramDescriptors(const char * data, const uint32_t len) : p_data(data), p_len(len){
}
///Returns the ISO-629 language code, or "und" if unknown.
std::string ProgramDescriptors::getLanguage() const{
for (uint32_t p = 0; p + 1 < p_len; p += p_data[p+1]+2){
if (p_data[p] == 0x0A){//language tag
//We assume the first one is the only interesting one
return std::string(p_data+p+2, 3);
}
}
//No tag found! Undetermined by default.
return "und";
}
///Prints all descriptors we understand in a readable format, the others in raw hex.
std::string ProgramDescriptors::toPrettyString(size_t indent) const{
std::stringstream output;
for (uint32_t p = 0; p + 1 < p_len; p += p_data[p+1]+2){
switch (p_data[p]){
case 0x0A:{//ISO 639-2 language tag (ISO 13818-1)
uint32_t offset = 0;
while (offset < p_data[p+1]){//single language
output << std::string(indent, ' ') << "Language: " << std::string(p_data+p+2+offset,3);
switch (p_data[p+5+offset]){
case 1: output << ", clean effects";
}
output << std::endl;
offset += 4;
}
} break;
case 0x7C:{//AAC descriptor (EN 300 468)
if (p_data[p+1] < 2 || p+2+p_data[p+1] > p_len){continue;}//skip broken data
output << std::string(indent, ' ') << "AAC profile: ";
switch (p_data[p+2]){
case 0x50: output << "AAC, level 1"; break;
case 0x51: output << "AAC, level 2"; break;
case 0x52: output << "AAC, level 4"; break;
case 0x53: output << "AAC, level 5"; break;
case 0x58: output << "AAC-HE, level 2"; break;
case 0x59: output << "AAC-HE, level 3"; break;
case 0x5A: output << "AAC-HE, level 4"; break;
case 0x5B: output << "AAC-HE, level 5"; break;
case 0x60: output << "AAC-HEv2, level 2"; break;
case 0x61: output << "AAC-HEv2, level 3"; break;
case 0x62: output << "AAC-HEv2, level 4"; break;
case 0x63: output << "AAC-HEv2, level 5"; break;
default: output << std::hex << std::setw(2) << std::setfill('0') << std::uppercase << (int)p_data[p+2] << std::dec;
}
if (p_data[p+3] & 0x80){
output << ", type: " << std::hex << std::setw(2) << std::setfill('0') << std::uppercase << (int)p_data[p+3] << std::dec;
}
output << std::endl;
if (p_data[p+1] > 2){
output << std::string(indent+2, ' ') << "Extra data: ";
for (uint32_t offset = 2; p+2+offset < p_data[p+1]; ++offset){
output << std::hex << std::setw(2) << std::setfill('0') << std::uppercase << (int)p_data[p+2+offset] << std::dec;
}
}
} break;
default:{
output << std::string(indent, ' ') << "Undecoded descriptor: ";
for (uint32_t i = 0; i<p_data[p+1]+2; ++i){
output << std::hex << std::setw(2) << std::setfill('0') << std::uppercase << (int)p_data[p+i] << std::dec;
}
output << std::endl;
}
}
}
return output.str();
}
/// Construct a PMT (special 188B ts packet) from a set of selected tracks and metadata.
/// This function is not part of the packet class, but it is in the TS namespace.
@ -1018,6 +1086,12 @@ namespace TS {
if (myMeta.tracks[*it].codec == "ID3"){
sectionLen += myMeta.tracks[*it].init.size();
}
if (myMeta.tracks[*it].codec == "AAC"){
sectionLen += 4;//aac descriptor
if (myMeta.tracks[*it].lang.size() == 3 && myMeta.tracks[*it].lang != "und"){
sectionLen += 6;//language descriptor
}
}
}
PMT.setSectionLength(0xB00D + sectionLen);
PMT.setProgramNumber(1);
@ -1047,6 +1121,14 @@ namespace TS {
entry.setStreamType(0x1B);
}else if (myMeta.tracks[*it].codec == "AAC"){
entry.setStreamType(0x0F);
std::string aac_info("\174\002\121\000", 4);//AAC descriptor: AAC Level 2. Hardcoded, because... what are AAC levels, anyway?
//language code ddescriptor
if (myMeta.tracks[*it].lang.size() == 3 && myMeta.tracks[*it].lang != "und"){
aac_info.append("\012\004", 2);
aac_info.append(myMeta.tracks[*it].lang);
aac_info.append("\000", 1);
}
entry.setESInfo(aac_info);
}else if (myMeta.tracks[*it].codec == "MP3"){
entry.setStreamType(0x03);
}else if (myMeta.tracks[*it].codec == "ID3"){