Audio data Extraction from OGG in c/c++ Stream processing - OGG cutter

Audio data Extraction from OGG in c/c++ Stream processing - OGG cutter We have one large OGG/mp3 files. We need to split parts at nanosecond level..and mege finally. Merge=bufferA+ bufferB+bufferC...etc upti bufferN and finally output a OGG back. Software we are looking for exact do same thing like mkvmerge , just additional backward split feature. Do not look into readymade command line tools .Later on I want to add some filter on audio buffers. and further implementation for selected candidate. Only apply if you have experience to handle audio data in c++/c buffers. Entire process should be lighting fast and take no more than 1 second to split 100s of parts. More Details will given to selected candidate. This is simple job who work with audio data processing before.