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/*
* Original work: Copyright (c) 2014, Oculus VR, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* RakNet License.txt file in the licenses directory of this source tree. An additional grant
* of patent rights can be found in the RakNet Patents.txt file in the same directory.
*
*
* Modified work: Copyright (c) 2016-2020, SLikeSoft UG (haftungsbeschränkt)
*
* This source code was modified by SLikeSoft. Modifications are licensed under the MIT-style
* license found in the license.txt file in the root directory of this source tree.
*/
#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include <limits> // used for std::numeric_limits
#include "portaudio.h"
#include "slikenet/Kbhit.h"
#include "slikenet/peerinterface.h"
#include "slikenet/MessageIdentifiers.h"
#include "RakVoice.h"
#include "slikenet/statistics.h"
#include "slikenet/NatPunchthroughClient.h"
#include "slikenet/BitStream.h"
#include "slikenet/Getche.h"
#include "slikenet/Gets.h"
#include "slikenet/linux_adapter.h"
#include "slikenet/osx_adapter.h"
/// To test sending to myself. Also uncomment in RakVoice.cpp
//#define _TEST_LOOPBACK
// RakVoice only works with 16-bits sound data
#define PA_SAMPLE_TYPE paInt16
typedef short SAMPLE;
// Reads and writes per second of the sound data
// Speex only supports these 3 values
#define SAMPLE_RATE (8000)
//#define SAMPLE_RATE (16000)
//#define SAMPLE_RATE (32000)
SLNet::RakPeerInterface *rakPeer;
// I think one buffer has to be full (of samples) before you hear the sound.
// So higher frames per buffer means that there will be a larger latency before you hear the sound
// However, it would lock and unlock the buffer more often, hindering performance.
#define FRAMES_PER_BUFFER (2048 / (32000 / SAMPLE_RATE))
bool mute;
SLNet::RakVoice rakVoice;
// inputBuffer and outputBuffer is an array of SAMPLE of count framesPerBuffer
// A sample is one unit of sound.
// The sample rate is the number of sound samples taken per second
// I think one frame is a set of samples equal to the number of channels. I'm not sure though or how that sample is arranged.
static int PACallback( void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
PaTimestamp outTime, void *userData )
{
// unused parameters
(void)framesPerBuffer;
(void)outTime;
(void)userData;
if (inputBuffer && !mute)
{
// TODO - if the input data is mostly silence, don't send and save the bandwidth.
#ifndef _TEST_LOOPBACK
unsigned i;
for (i=0; i < rakPeer->GetMaximumNumberOfPeers(); i++)
{
rakVoice.SendFrame(rakPeer->GetGUIDFromIndex(i), inputBuffer);
}
#else
rakVoice.SendFrame(SLNet::UNASSIGNED_SYSTEM_ADDRESS, inputBuffer);
#endif
}
rakVoice.ReceiveFrame(outputBuffer);
return 0;
}
#define NAT_PUNCHTHROUGH_FACILITATOR_PORT 61111
int main(void)
{
PortAudioStream *stream;
PaError err;
mute=false;
bool quit;
int ch;
printf("A sample on how to use RakVoice. You need a microphone for this sample.\n");
printf("RakVoice relies on Speex for voice encoding and decoding.\n");
printf("See DependentExtensions/RakVoice/speex-1.1.12 for speex projects.\n");
printf("For windows, I had to define HAVE_CONFIG_H, include win32/config.h,\n");
printf("and include the files under libspeex, except those that start with test.\n");
printf("PortAudio is also included and is used to read and write audio data. You\n");
printf("can substitute whatever you want if you do not want to use portaudio.\n");
printf("Difficulty: Advanced\n\n");
// Since voice is peer to peer, we give the option to use the nat punchthrough client if desired.
SLNet::NatPunchthroughClient natPunchthroughClient;
char port[256];
rakPeer = SLNet::RakPeerInterface::GetInstance();
printf("Enter local port (enter for default): ");
Gets(port, sizeof(port));
if (port[0]==0)
strcpy_s(port, "60000");
const int intLocalPort = atoi(port);
if ((intLocalPort < 0) || (intLocalPort > std::numeric_limits<unsigned short>::max())) {
printf("Specified local port %d is outside valid bounds [0, %u]", intLocalPort, std::numeric_limits<unsigned short>::max());
return 1;
}
SLNet::SocketDescriptor socketDescriptor(static_cast<unsigned short>(intLocalPort), 0);
rakPeer->Startup(4, &socketDescriptor, 1);
rakPeer->SetMaximumIncomingConnections(4);
rakPeer->AttachPlugin(&rakVoice);
rakPeer->AttachPlugin(&natPunchthroughClient);
rakVoice.Init(SAMPLE_RATE, FRAMES_PER_BUFFER*sizeof(SAMPLE));
err = Pa_Initialize();
if( err != paNoError ) goto error;
err = Pa_OpenStream(
&stream,
Pa_GetDefaultInputDeviceID(),
1, // Num channels, whatever that means
PA_SAMPLE_TYPE,
nullptr,
Pa_GetDefaultOutputDeviceID(),
1, // Num channels
PA_SAMPLE_TYPE,
nullptr,
SAMPLE_RATE,
FRAMES_PER_BUFFER, /* frames per buffer */
0, /* number of buffers, if zero then use default minimum */
0, /* paDitherOff, // flags */
PACallback,
0 );
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Support NAT punchthrough? (y/n)? ");
bool useNatPunchthrough;
useNatPunchthrough=(_getche()=='y');
printf("\n");
char facilitatorIP[256];
{//Linux fix. Won't compile without it. Because of the goto error above, the scope is ambigious. Make it a block to define that it will not be used after the jump.
//Doesn't change current logic
SLNet::SystemAddress facilitator;
if (useNatPunchthrough)
{
printf("My GUID is %s\n", rakPeer->GetGuidFromSystemAddress(SLNet::UNASSIGNED_SYSTEM_ADDRESS).ToString());
printf("Enter IP of facilitator (enter for default): ");
Gets(facilitatorIP,sizeof(facilitatorIP));
if (facilitatorIP[0]==0)
strcpy_s(facilitatorIP, "natpunch.slikesoft.com");
facilitator.FromString(facilitatorIP);
facilitator.SetPortHostOrder(NAT_PUNCHTHROUGH_FACILITATOR_PORT);
rakPeer->Connect(facilitatorIP, NAT_PUNCHTHROUGH_FACILITATOR_PORT, 0, 0);
printf("Connecting to facilitator...\n");
}
else
{
printf("Not supporting NAT punchthrough.\n");
}
SLNet::Packet *p;
quit=false;
if (useNatPunchthrough==false)
printf("(Q)uit. (C)onnect. (D)isconnect. C(l)ose voice channels. (M)ute. ' ' for stats.\n");
while (!quit)
{
if (_kbhit())
{
ch=_getch();
if (ch=='y')
{
quit=true;
}
else if (ch=='c')
{
if (useNatPunchthrough)
{
SLNet::RakNetGUID destination;
printf("Enter GUID of destination: ");
char guidStr[256];
for(;;)
{
Gets(guidStr,sizeof(guidStr));
if (!destination.FromString(guidStr))
printf("Invalid GUID format. Try again.\nEnter GUID of destination: ");
else
break;
}
printf("Starting NAT punch. Please wait...\n");
natPunchthroughClient.OpenNAT(destination,facilitator);
}
else
{
char ip[256];
printf("Enter IP of remote system: ");
Gets(ip, sizeof(ip));
if (ip[0]==0)
strcpy_s(ip, "127.0.0.1");
printf("Enter port of remote system: ");
Gets(port, sizeof(port));
if (port[0]==0)
strcpy_s(port, "60000");
const int intRemotePort = atoi(port);
if ((intRemotePort < 0) || (intRemotePort > std::numeric_limits<unsigned short>::max())) {
printf("Specified remote port %d is outside valid bounds [0, %u]", intRemotePort, std::numeric_limits<unsigned short>::max());
return 2;
}
rakPeer->Connect(ip, static_cast<unsigned short>(intRemotePort), 0,0);
}
}
else if (ch=='m')
{
mute=!mute;
if (mute)
printf("Now muted.\n");
else
printf("No longer muted.\n");
}
else if (ch=='d')
{
rakPeer->Shutdown(100,0);
}
else if (ch=='l')
{
rakVoice.CloseAllChannels();
}
else if (ch==' ')
{
char message[2048];
SLNet::RakNetStatistics *rss=rakPeer->GetStatistics(rakPeer->GetSystemAddressFromIndex(0));
StatisticsToString(rss, message, 2048, 2);
printf("%s", message);
}
else if (ch=='q')
quit=true;
ch=0;
}
p=rakPeer->Receive();
while (p)
{
if (p->data[0]==ID_CONNECTION_REQUEST_ACCEPTED)
{
if (p->systemAddress==facilitator)
{
printf("Connection to facilitator completed\n");
printf("(Q)uit. (C)onnect. (D)isconnect. (M)ute. ' ' for stats.\n");
}
else
{
printf("ID_CONNECTION_REQUEST_ACCEPTED from %s\n", p->systemAddress.ToString());
rakVoice.RequestVoiceChannel(p->guid);
}
}
else if (p->data[0]==ID_CONNECTION_ATTEMPT_FAILED)
{
if (p->systemAddress==facilitator)
{
printf("Connection to facilitator failed. Using direct connections\n");
useNatPunchthrough=false;
printf("(Q)uit. (C)onnect. (D)isconnect. (M)ute. ' ' for stats.\n");
}
else
{
printf("ID_CONNECTION_ATTEMPT_FAILED\n");
}
}
else if (p->data[0]==ID_RAKVOICE_OPEN_CHANNEL_REQUEST || p->data[0]==ID_RAKVOICE_OPEN_CHANNEL_REPLY)
{
printf("Got new channel from %s\n", p->systemAddress.ToString());
}
else if (p->data[0]==ID_NAT_TARGET_NOT_CONNECTED)
{
SLNet::RakNetGUID g;
SLNet::BitStream b(p->data, p->length, false);
b.IgnoreBits(8); // Ignore the ID_...
b.Read(g);
printf("ID_NAT_TARGET_NOT_CONNECTED for %s\n", g.ToString());
}
else if (p->data[0]==ID_NAT_TARGET_UNRESPONSIVE)
{
SLNet::RakNetGUID g;
SLNet::BitStream b(p->data, p->length, false);
b.IgnoreBits(8); // Ignore the ID_...
b.Read(g);
printf("ID_NAT_TARGET_UNRESPONSIVE for %s\n", g.ToString());
}
else if (p->data[0]==ID_NAT_CONNECTION_TO_TARGET_LOST)
{
SLNet::RakNetGUID g;
SLNet::BitStream b(p->data, p->length, false);
b.IgnoreBits(8); // Ignore the ID_...
b.Read(g);
printf("ID_NAT_CONNECTION_TO_TARGET_LOST for %s\n", g.ToString());
}
else if (p->data[0]==ID_NAT_ALREADY_IN_PROGRESS)
{
SLNet::RakNetGUID g;
SLNet::BitStream b(p->data, p->length, false);
b.IgnoreBits(8); // Ignore the ID_...
b.Read(g);
printf("ID_NAT_ALREADY_IN_PROGRESS for %s\n", g.ToString());
}
else if (p->data[0]==ID_NAT_PUNCHTHROUGH_FAILED)
{
printf("ID_NAT_PUNCHTHROUGH_FAILED for %s\n", p->guid.ToString());
}
else if (p->data[0]==ID_NAT_PUNCHTHROUGH_SUCCEEDED)
{
printf("ID_NAT_PUNCHTHROUGH_SUCCEEDED for %s. Connecting...\n", p->guid.ToString());
rakPeer->Connect(p->systemAddress.ToString(false),p->systemAddress.GetPort(),0,0);
}
else if (p->data[0]==ID_ALREADY_CONNECTED)
{
printf("ID_ALREADY_CONNECTED\n");
}
else if (p->data[0]==ID_RAKVOICE_CLOSE_CHANNEL)
{
printf("ID_RAKVOICE_CLOSE_CHANNEL\n");
}
else if (p->data[0]==ID_DISCONNECTION_NOTIFICATION)
{
printf("ID_DISCONNECTION_NOTIFICATION\n");
}
else if (p->data[0]==ID_NEW_INCOMING_CONNECTION)
{
printf("ID_NEW_INCOMING_CONNECTION\n");
}
else
{
printf("Unknown packet ID %i\n", p->data[0]);
}
rakPeer->DeallocatePacket(p);
p=rakPeer->Receive();
}
Pa_Sleep( 30 );
}
}
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
Pa_Terminate();
rakPeer->Shutdown(300);
SLNet::RakPeerInterface::DestroyInstance(rakPeer);
return 0;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return -1;
}