[Linphone-developers] g711 implementation codec

[aleksei drassen]

Hi, again (i know, i know today is sarturday bla bla bla but we are coders!, saturday does'nt exist!), so i unable to find a server to test the linphone blackberry client offline (lan) so i need know how can i implement g711 ulaw or allaw codec.

or if any of you have any documentation of the source code to start porting android g711 implementation to blackberry device, the problem is clear: this client with amr is useless with almost all sip servers i found.

I see this class and maybe i think here is embebed amr on the client:

try {

long diff;

while((diff=(ts-mPlayerTs))>=0){

if (diff> 800){

mPlayerTs=ts-800;

sLogger.warn("Too late, skipping "+ ((diff-800)/8) +" ms...");

}

packet=mSession.recvPacket((int)mPlayerTs);

if (packet!=null){

mReturnedMs+=20;

if (mFirstRead) {

String lAmrHeader="#!AMR\n";

lWrittenLenth=lAmrHeader.length();

System.arraycopy(lAmrHeader.getBytes("US-ASCII"),0, b, offset, lWrittenLenth );

length = length - lWrittenLenth;

offset+=lWrittenLenth;

mFirstRead=false;

}

if ((length < sSilentAmr.length))  {

// special case for end of buffer

System.arraycopy(packet.getBytes(),packet.getDataOffset()+1, b, offset, length );

lWrittenLenth+= length;

mTroncatedPacketSize=length;

mTroncatedPacket = packet;

if (sLogger.isLevelEnabled(Logger.Warn)) sLogger.warn("End of buffer, ["+lWrittenLenth+"] bytes returned");

return lWrittenLenth;

}else{

if (mTroncatedPacket != null) {

// special case for troncated packet

int remain=mTroncatedPacket.getRealLength()-mTroncatedPacket.getDataOffset()-1- mTroncatedPacketSize;

System.arraycopy(mTroncatedPacket.getBytes(),mTroncatedPacket.getDataOffset()+1+mTroncatedPacketSize, b, offset, remain);

lWrittenLenth+= remain;

mTroncatedPacketSize=0;

mTroncatedPacket = null;

offset+= remain;

length-=remain;

}

//+1 because we need to skip the CMR bytes

int datalen=packet.getRealLength()-packet.getDataOffset()-1;

System.arraycopy(packet.getBytes(),packet.getDataOffset()+1, b, offset, datalen );

lWrittenLenth+= datalen;

length-=datalen;

offset+=datalen;

}

}

mPlayerTs+=160;

}

} catch (RtpException e) {

sLogger.error("Bad RTP packet", e);

}

if (packet==null) Thread.sleep(20);

}

if (!mRunning){

//to notify end of stream.

return -1;

}

if (sLogger.isLevelEnabled(Logger.Debug)) sLogger.debug("["+lWrittenLenth+"] bytes returned");

return lWrittenLenth;

} catch (Throwable e) {

sLogger.error("Exiting player input stream",e);

return -1;

}

finally {

if (bytesToReturn > sSilentAmr.length) {

// we were buffering, so now it's ok resetting value

mBuffering=false;

}

}

thanks all you guys for help me.