Hi.
I'm working on this voice chat -alike application, where two users simply talk to each other through microphone, using speex codec.
I've managed to make a working connection between server and client with both, TCP and UDP connections with SDL_net.
The problem I have here is that my incoming audio buffer seems to run out of data very fast.
If I first stream, like, 1 second of audio before starting to play it back, I can then play it back like second or two before my incoming buffer has ran out of data.
I'm kinda beginner in live audio streaming through tcp / udp sockets so any tips are helpful.
Send:
BOOL CALLBACK RecordProc(HRECORD handle,const void *buffer,DWORD length,void *user) {
return TRUE;
}
void CALLBACK EncodeProc(
HENCODE handle,
DWORD channel,
const void *buffer,
DWORD length,
void *user
) {
memcpy(recbuffer + readyoffset,buffer,length);
readyoffset = readyoffset + length;
}
HRECORD rec = BASS_RecordStart(11025,1,BASS_RECORD_PAUSE,&RecordProc,0);
HENCODE encoder = BASS_Encode_Start(rec, "speexenc -n --comp 1 - -", BASS_ENCODE_NOHEAD, EncodeProc, 0);
BASS_ChannelPlay(rec,FALSE);
Receive (store to buffer:):
if (SDLNet_UDP_Recv(sender, p)) {
memcpy(recbuffer + offset,(char *)p->data,p->len);
offset = offset + p->len;
SDLNet_FreePacket(p);
p = NULL;
if (!(p = SDLNet_AllocPacket(512))) {
}
}
Receive (copy from incoming buffer to bass buffer):
DWORD CALLBACK MyFileReadProc(void *buffer, DWORD length, void *user)
{
if( takeoffset > offset + length ) {
//TODO: Return fixed size
if( takeoffset == offset ) {
// mem totally empty
underrun = true;
cout <<"Buffer underrun"<<endl;
return 0;
}/*
cout <<"Buffer underrun too close"<<endl;
return 0;
} else {
memcpy(buffer,recbuffer + takeoffset,length);
takeoffset = takeoffset + length;
return length;
}
}
As you can see, right now I stop feeding data when I cant return full length buffer.
