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Ogg lib has new DTSC features

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Oswald Auguste de Bruin 2013-08-12 11:33:08 +02:00 • committed by Thulinma
parent b85ceb9fc5
commit f173ad0966
2 changed files with 58 additions and 0 deletions
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50
lib/ogg.cpp
View file

@ -483,4 +483,54 @@ namespace OGG{
setPayload((char*)pageBuffer.c_str(), pageBuffer.size());
setCRCChecksum(calcChecksum());
}
void headerPages::readDTSCHeader(JSON::Value meta){
//pages.clear();
parsedPages = "";
Page curOggPage;
srand (Util::getMS());//randomising with milliseconds from boot
std::vector<unsigned int> curSegTable;
DTSCID2OGGSerial.clear();
DTSCID2seqNum.clear();
//Creating ID headers for theora and vorbis
for ( JSON::ObjIter it = meta["tracks"].ObjBegin(); it != meta["tracks"].ObjEnd(); it ++) {
curOggPage.clear();
curOggPage.setVersion();
curOggPage.setHeaderType(2);//headertype 2 = Begin of Stream
curOggPage.setGranulePosition(0);
DTSCID2OGGSerial[it->second["trackid"].asInt()] = rand() % 0xFFFFFFFE +1; //initialising on a random not 0 number
curOggPage.setBitstreamSerialNumber(DTSCID2OGGSerial[it->second["trackid"].asInt()]);
DTSCID2seqNum[it->second["trackid"].asInt()] = 0;
curOggPage.setPageSequenceNumber(DTSCID2seqNum[it->second["trackid"].asInt()]++);
curSegTable.clear();
curSegTable.push_back(it->second["IDHeader"].asString().size());
curOggPage.setSegmentTable(curSegTable);
curOggPage.setPayload((char*)it->second["IDHeader"].asString().c_str(), it->second["IDHeader"].asString().size());
curOggPage.setCRCChecksum(curOggPage.calcChecksum());
//std::cout << std::string(curOggPage.getPage(), curOggPage.getPageSize());
//pages.push_back(curOggPage);
parsedPages += std::string(curOggPage.getPage(), curOggPage.getPageSize());
}
//Creating remaining headers for theora and vorbis
//for tracks in header
//create standard page with comment (empty) en setup header(init)
for ( JSON::ObjIter it = meta["tracks"].ObjBegin(); it != meta["tracks"].ObjEnd(); it ++) {
curOggPage.clear();
curOggPage.setVersion();
curOggPage.setHeaderType(0);//headertype 0 = normal
curOggPage.setGranulePosition(0);
curOggPage.setBitstreamSerialNumber(DTSCID2OGGSerial[it->second["trackid"].asInt()]);
curOggPage.setPageSequenceNumber(DTSCID2seqNum[it->second["trackid"].asInt()]++);
curSegTable.clear();
curSegTable.push_back(it->second["CommentHeader"].asString().size());
curSegTable.push_back(it->second["init"].asString().size());
curOggPage.setSegmentTable(curSegTable);
std::string fullHeader = it->second["CommentHeader"].asString() + it->second["init"].asString();
curOggPage.setPayload((char*)fullHeader.c_str(),fullHeader.size());
curOggPage.setCRCChecksum(curOggPage.calcChecksum());
//std::cout << std::string(curOggPage.getPage(), curOggPage.getPageSize());
//pages.push_back(curOggPage);
parsedPages += std::string(curOggPage.getPage(), curOggPage.getPageSize());
}
}
}

8
lib/ogg.h
View file

@ -54,4 +54,12 @@ namespace OGG{
bool checkDataSize(unsigned int size);
std::string codec;//codec in the page
};
class headerPages{
public:
void readDTSCHeader(JSON::Value meta);
std::map <long long unsigned int, unsigned int> DTSCID2OGGSerial;
std::map <long long unsigned int, unsigned int> DTSCID2seqNum;
std::string parsedPages;
};
}