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updated appendNal and added upgradeNal in DTSC lib, nal lib speedup

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Ramkoemar 2017-06-26 14:44:09 +02:00 • committed by Thulinma
parent 994ad94fde
commit c7816c42f0
3 changed files with 31 additions and 17 deletions
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38
lib/dtscmeta.cpp
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@ -291,30 +291,42 @@ namespace DTSC {
}
}
void Packet::appendData(const char * appendData, uint32_t appendLen){
resize(dataLen + appendLen);
memcpy(data + dataLen-3, appendData, appendLen);
memcpy(data + dataLen-3 + appendLen, "\000\000\356", 3); //end container
dataLen += appendLen;
Bit::htobl(data+4, Bit::btohl(data +4)+appendLen);
uint32_t offset = getDataStringLenOffset();
Bit::htobl(data+offset, Bit::btohl(data+offset)+appendLen);
}
void Packet::appendNal(const char * appendData, uint32_t appendLen, uint32_t totalLen){
if(totalLen ==0){
void Packet::appendNal(const char * appendData, uint32_t appendLen){
if(appendLen ==0){
return;
}
// INFO_MSG("totallen: %d, appendLen: %d",totalLen,appendLen);
resize(dataLen + appendLen +4);
Bit::htobl(data+dataLen -3, totalLen);
Bit::htobl(data+dataLen -3, appendLen);
memcpy(data + dataLen-3+4, appendData, appendLen);
memcpy(data + dataLen-3+4 + appendLen, "\000\000\356", 3); //end container
dataLen += appendLen +4;
Bit::htobl(data+4, Bit::btohl(data +4)+appendLen+4);
uint32_t offset = getDataStringLenOffset();
Bit::htobl(data+offset, Bit::btohl(data+offset)+appendLen+4);
prevNalSize = appendLen;
}
void Packet::upgradeNal(const char * appendData, uint32_t appendLen){
if(appendLen ==0){
return;
}
uint64_t sizeOffset = dataLen - 3 - 4 - prevNalSize;
if (Bit::btohl(data + sizeOffset) != prevNalSize){
FAIL_MSG("PrevNalSize state not correct");
return;
}
resize(dataLen + appendLen);//Not + 4 as size bytes have already been written here.
Bit::htobl(data+sizeOffset, prevNalSize + appendLen);
prevNalSize += appendLen;
memcpy(data + dataLen - 3, appendData, appendLen);
memcpy(data + dataLen - 3 + appendLen, "\000\000\356", 3); //end container
dataLen += appendLen;
Bit::htobl(data+4, Bit::btohl(data +4)+appendLen);
uint32_t offset = getDataStringLenOffset();
Bit::htobl(data+offset, Bit::btohl(data+offset)+appendLen);
}
uint32_t Packet::getDataStringLen(){