JackNetInterface.cpp
/*
Copyright (C) 2008-2011 Romain Moret at Grame
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "JackNetInterface.h"
#include "JackException.h"
#include "JackError.h"
#include <assert.h>
using namespace std;
/*
TODO : since midi buffers now uses up to BUFFER_SIZE_MAX frames,
probably also use BUFFER_SIZE_MAX in everything related to MIDI events
handling (see MidiBufferInit in JackMidiPort.cpp)
*/
namespace Jack
{
// JackNetInterface*******************************************
JackNetInterface::JackNetInterface() : fSocket()
{
Initialize();
}
JackNetInterface::JackNetInterface(const char* multicast_ip, int port) : fSocket(multicast_ip, port)
{
strcpy(fMulticastIP, multicast_ip);
Initialize();
}
JackNetInterface::JackNetInterface(session_params_t& params, JackNetSocket& socket, const char* multicast_ip) : fSocket(socket)
{
fParams = params;
strcpy(fMulticastIP, multicast_ip);
Initialize();
}
void JackNetInterface::Initialize()
{
fSetTimeOut = false;
fTxBuffer = NULL;
fRxBuffer = NULL;
fNetAudioCaptureBuffer = NULL;
fNetAudioPlaybackBuffer = NULL;
fNetMidiCaptureBuffer = NULL;
fNetMidiPlaybackBuffer = NULL;
memset(&fSendTransportData, 0, sizeof(net_transport_data_t));
memset(&fReturnTransportData, 0, sizeof(net_transport_data_t));
fPacketTimeOut = PACKET_TIMEOUT * NETWORK_DEFAULT_LATENCY;
}
void JackNetInterface::FreeNetworkBuffers()
{
delete fNetMidiCaptureBuffer;
delete fNetMidiPlaybackBuffer;
delete fNetAudioCaptureBuffer;
delete fNetAudioPlaybackBuffer;
fNetMidiCaptureBuffer = NULL;
fNetMidiPlaybackBuffer = NULL;
fNetAudioCaptureBuffer = NULL;
fNetAudioPlaybackBuffer = NULL;
}
JackNetInterface::~JackNetInterface()
{
jack_log("JackNetInterface::~JackNetInterface");
fSocket.Close();
delete[] fTxBuffer;
delete[] fRxBuffer;
delete fNetAudioCaptureBuffer;
delete fNetAudioPlaybackBuffer;
delete fNetMidiCaptureBuffer;
delete fNetMidiPlaybackBuffer;
}
int JackNetInterface::SetNetBufferSize()
{
// audio
float audio_size = (fNetAudioCaptureBuffer)
? fNetAudioCaptureBuffer->GetCycleSize()
: (fNetAudioPlaybackBuffer) ? fNetAudioPlaybackBuffer->GetCycleSize() : 0;
jack_log("audio_size %f", audio_size);
// midi
float midi_size = (fNetMidiCaptureBuffer)
? fNetMidiCaptureBuffer->GetCycleSize()
: (fNetMidiPlaybackBuffer) ? fNetMidiPlaybackBuffer->GetCycleSize() : 0;
jack_log("midi_size %f", midi_size);
// bufsize = sync + audio + midi
int bufsize = NETWORK_MAX_LATENCY * (fParams.fMtu + (int)audio_size + (int)midi_size);
jack_log("SetNetBufferSize bufsize = %d", bufsize);
// tx buffer
if (fSocket.SetOption(SOL_SOCKET, SO_SNDBUF, &bufsize, sizeof(bufsize)) == SOCKET_ERROR) {
return SOCKET_ERROR;
}
// rx buffer
if (fSocket.SetOption(SOL_SOCKET, SO_RCVBUF, &bufsize, sizeof(bufsize)) == SOCKET_ERROR) {
return SOCKET_ERROR;
}
return 0;
}
bool JackNetInterface::SetParams()
{
// TX header init
memset(&fTxHeader, 0, sizeof(fTxHeader));
strcpy(fTxHeader.fPacketType, "header");
fTxHeader.fID = fParams.fID;
fTxHeader.fCycle = 0;
fTxHeader.fSubCycle = 0;
fTxHeader.fIsLastPckt = 0;
// RX header init
memset(&fRxHeader, 0, sizeof(fTxHeader));
strcpy(fRxHeader.fPacketType, "header");
fRxHeader.fID = fParams.fID;
fRxHeader.fCycle = 0;
fRxHeader.fSubCycle = 0;
fRxHeader.fIsLastPckt = 0;
// network buffers
fTxBuffer = new char[fParams.fMtu];
fRxBuffer = new char[fParams.fMtu];
assert(fTxBuffer);
assert(fRxBuffer);
// net audio/midi buffers'addresses
fTxData = fTxBuffer + HEADER_SIZE;
fRxData = fRxBuffer + HEADER_SIZE;
return true;
}
int JackNetInterface::MidiSend(NetMidiBuffer* buffer, int midi_channnels, int audio_channels)
{
if (midi_channnels > 0) {
// set global header fields and get the number of midi packets
fTxHeader.fDataType = 'm';
uint data_size = buffer->RenderFromJackPorts();
fTxHeader.fNumPacket = buffer->GetNumPackets(data_size, PACKET_AVAILABLE_SIZE(&fParams));
for (uint subproc = 0; subproc < fTxHeader.fNumPacket; subproc++) {
fTxHeader.fSubCycle = subproc;
fTxHeader.fIsLastPckt = ((subproc == (fTxHeader.fNumPacket - 1)) && audio_channels == 0) ? 1 : 0;
fTxHeader.fPacketSize = HEADER_SIZE + buffer->RenderToNetwork(subproc, data_size);
memcpy(fTxBuffer, &fTxHeader, HEADER_SIZE);
//PacketHeaderDisplay(&fTxHeader);
if (Send(fTxHeader.fPacketSize, 0) == SOCKET_ERROR) {
return SOCKET_ERROR;
}
}
}
return 0;
}
int JackNetInterface::AudioSend(NetAudioBuffer* buffer, int audio_channels)
{
// audio
if (audio_channels > 0) {
fTxHeader.fDataType = 'a';
fTxHeader.fActivePorts = buffer->RenderFromJackPorts(fTxHeader.fFrames);
fTxHeader.fNumPacket = buffer->GetNumPackets(fTxHeader.fActivePorts);
for (uint subproc = 0; subproc < fTxHeader.fNumPacket; subproc++) {
fTxHeader.fSubCycle = subproc;
fTxHeader.fIsLastPckt = (subproc == (fTxHeader.fNumPacket - 1)) ? 1 : 0;
fTxHeader.fPacketSize = HEADER_SIZE + buffer->RenderToNetwork(subproc, fTxHeader.fActivePorts);
memcpy(fTxBuffer, &fTxHeader, HEADER_SIZE);
//PacketHeaderDisplay(&fTxHeader);
if (Send(fTxHeader.fPacketSize, 0) == SOCKET_ERROR) {
return SOCKET_ERROR;
}
}
}
return 0;
}
int JackNetInterface::MidiRecv(packet_header_t* rx_head, NetMidiBuffer* buffer, uint& recvd_midi_pckt)
{
int rx_bytes = Recv(rx_head->fPacketSize, 0);
fRxHeader.fCycle = rx_head->fCycle;
fRxHeader.fIsLastPckt = rx_head->fIsLastPckt;
buffer->RenderFromNetwork(rx_head->fSubCycle, rx_bytes - HEADER_SIZE);
// Last midi packet is received, so finish rendering...
if (++recvd_midi_pckt == rx_head->fNumPacket) {
buffer->RenderToJackPorts();
}
//PacketHeaderDisplay(rx_head);
return rx_bytes;
}
int JackNetInterface::AudioRecv(packet_header_t* rx_head, NetAudioBuffer* buffer)
{
int rx_bytes = Recv(rx_head->fPacketSize, 0);
fRxHeader.fCycle = rx_head->fCycle;
fRxHeader.fSubCycle = rx_head->fSubCycle;
fRxHeader.fIsLastPckt = rx_head->fIsLastPckt;
fRxHeader.fActivePorts = rx_head->fActivePorts;
fRxHeader.fFrames = rx_head->fFrames;
rx_bytes = buffer->RenderFromNetwork(rx_head->fCycle, rx_head->fSubCycle, fRxHeader.fActivePorts);
// Last audio packet is received, so finish rendering...
if (fRxHeader.fIsLastPckt) {
buffer->RenderToJackPorts(fRxHeader.fFrames);
}
//PacketHeaderDisplay(rx_head);
return rx_bytes;
}
int JackNetInterface::FinishRecv(NetAudioBuffer* buffer)
{
if (buffer) {
buffer->RenderToJackPorts(fRxHeader.fFrames);
} else {
jack_error("FinishRecv with null buffer...");
}
return DATA_PACKET_ERROR;
}
NetAudioBuffer* JackNetInterface::AudioBufferFactory(int nports, char* buffer)
{
switch (fParams.fSampleEncoder) {
case JackFloatEncoder:
return new NetFloatAudioBuffer(&fParams, nports, buffer);
case JackIntEncoder:
return new NetIntAudioBuffer(&fParams, nports, buffer);
#if HAVE_CELT
case JackCeltEncoder:
return new NetCeltAudioBuffer(&fParams, nports, buffer, fParams.fKBps);
#endif
#if HAVE_OPUS
case JackOpusEncoder:
return new NetOpusAudioBuffer(&fParams, nports, buffer, fParams.fKBps);
#endif
}
throw std::bad_alloc();
}
void JackNetInterface::SetRcvTimeOut()
{
if (!fSetTimeOut) {
if (fSocket.SetTimeOut(fPacketTimeOut) == SOCKET_ERROR) {
jack_error("Can't set rx timeout : %s", StrError(NET_ERROR_CODE));
return;
}
fSetTimeOut = true;
}
}
// JackNetMasterInterface ************************************************************************************
bool JackNetMasterInterface::Init()
{
jack_log("JackNetMasterInterface::Init : ID %u", fParams.fID);
session_params_t host_params;
uint attempt = 0;
int rx_bytes = 0;
// socket
if (fSocket.NewSocket() == SOCKET_ERROR) {
jack_error("Can't create socket : %s", StrError(NET_ERROR_CODE));
return false;
}
// timeout on receive (for init)
if (fSocket.SetTimeOut(MASTER_INIT_TIMEOUT) < 0) {
jack_error("Can't set init timeout : %s", StrError(NET_ERROR_CODE));
}
// connect
if (fSocket.Connect() == SOCKET_ERROR) {
jack_error("Can't connect : %s", StrError(NET_ERROR_CODE));
return false;
}
// send 'SLAVE_SETUP' until 'START_MASTER' received
jack_info("Sending parameters to %s...", fParams.fSlaveNetName);
do
{
session_params_t net_params;
memset(&net_params, 0, sizeof(session_params_t));
SetPacketType(&fParams, SLAVE_SETUP);
SessionParamsHToN(&fParams, &net_params);
if (fSocket.Send(&net_params, sizeof(session_params_t), 0) == SOCKET_ERROR) {
jack_error("Error in send : %s", StrError(NET_ERROR_CODE));
}
memset(&net_params, 0, sizeof(session_params_t));
if (((rx_bytes = fSocket.Recv(&net_params, sizeof(session_params_t), 0)) == SOCKET_ERROR) && (fSocket.GetError() != NET_NO_DATA)) {
jack_error("Problem with network");
return false;
}
SessionParamsNToH(&net_params, &host_params);
}
while ((GetPacketType(&host_params) != START_MASTER) && (++attempt < SLAVE_SETUP_RETRY));
if (attempt == SLAVE_SETUP_RETRY) {
jack_error("Slave doesn't respond, exiting");
return false;
}
return true;
}
bool JackNetMasterInterface::SetParams()
{
jack_log("JackNetMasterInterface::SetParams audio in = %d audio out = %d MIDI in = %d MIDI out = %d",
fParams.fSendAudioChannels, fParams.fReturnAudioChannels,
fParams.fSendMidiChannels, fParams.fReturnMidiChannels);
JackNetInterface::SetParams();
fTxHeader.fDataStream = 's';
fRxHeader.fDataStream = 'r';
fMaxCycleOffset = fParams.fNetworkLatency;
// midi net buffers
if (fParams.fSendMidiChannels > 0) {
fNetMidiCaptureBuffer = new NetMidiBuffer(&fParams, fParams.fSendMidiChannels, fTxData);
}
if (fParams.fReturnMidiChannels > 0) {
fNetMidiPlaybackBuffer = new NetMidiBuffer(&fParams, fParams.fReturnMidiChannels, fRxData);
}
try {
// audio net buffers
if (fParams.fSendAudioChannels > 0) {
fNetAudioCaptureBuffer = AudioBufferFactory(fParams.fSendAudioChannels, fTxData);
assert(fNetAudioCaptureBuffer);
}
if (fParams.fReturnAudioChannels > 0) {
fNetAudioPlaybackBuffer = AudioBufferFactory(fParams.fReturnAudioChannels, fRxData);
assert(fNetAudioPlaybackBuffer);
}
} catch (exception&) {
jack_error("NetAudioBuffer on master allocation error...");
return false;
}
// set the new buffer size
if (SetNetBufferSize() == SOCKET_ERROR) {
jack_error("Can't set net buffer sizes : %s", StrError(NET_ERROR_CODE));
goto error;
}
return true;
error:
FreeNetworkBuffers();
return false;
}
void JackNetMasterInterface::Exit()
{
jack_log("JackNetMasterInterface::Exit, ID %u", fParams.fID);
// stop process
fRunning = false;
// send a 'multicast euthanasia request' - new socket is required on macosx
jack_info("Exiting '%s' %s", fParams.fName, fMulticastIP);
SetPacketType(&fParams, KILL_MASTER);
JackNetSocket mcast_socket(fMulticastIP, fSocket.GetPort());
session_params_t net_params;
memset(&net_params, 0, sizeof(session_params_t));
SessionParamsHToN(&fParams, &net_params);
if (mcast_socket.NewSocket() == SOCKET_ERROR) {
jack_error("Can't create socket : %s", StrError(NET_ERROR_CODE));
}
if (mcast_socket.SendTo(&net_params, sizeof(session_params_t), 0, fMulticastIP) == SOCKET_ERROR) {
jack_error("Can't send suicide request : %s", StrError(NET_ERROR_CODE));
}
mcast_socket.Close();
}
void JackNetMasterInterface::FatalRecvError()
{
// fatal connection issue, exit
jack_error("Recv connection lost error = %s, '%s' exiting", StrError(NET_ERROR_CODE), fParams.fName);
// ask to the manager to properly remove the master
Exit();
// UGLY temporary way to be sure the thread does not call code possibly causing a deadlock in JackEngine.
ThreadExit();
}
void JackNetMasterInterface::FatalSendError()
{
// fatal connection issue, exit
jack_error("Send connection lost error = %s, '%s' exiting", StrError(NET_ERROR_CODE), fParams.fName);
// ask to the manager to properly remove the master
Exit();
// UGLY temporary way to be sure the thread does not call code possibly causing a deadlock in JackEngine.
ThreadExit();
}
int JackNetMasterInterface::Recv(size_t size, int flags)
{
int rx_bytes;
if (((rx_bytes = fSocket.Recv(fRxBuffer, size, flags)) == SOCKET_ERROR) && fRunning) {
FatalRecvError();
}
packet_header_t* header = reinterpret_cast<packet_header_t*>(fRxBuffer);
PacketHeaderNToH(header, header);
return rx_bytes;
}
int JackNetMasterInterface::Send(size_t size, int flags)
{
int tx_bytes;
packet_header_t* header = reinterpret_cast<packet_header_t*>(fTxBuffer);
PacketHeaderHToN(header, header);
if (((tx_bytes = fSocket.Send(fTxBuffer, size, flags)) == SOCKET_ERROR) && fRunning) {
FatalSendError();
}
return tx_bytes;
}
int JackNetMasterInterface::SyncSend()
{
SetRcvTimeOut();
fTxHeader.fCycle++;
fTxHeader.fSubCycle = 0;
fTxHeader.fDataType = 's';
fTxHeader.fIsLastPckt = (fParams.fSendMidiChannels == 0 && fParams.fSendAudioChannels == 0) ? 1 : 0;
fTxHeader.fPacketSize = HEADER_SIZE + fTxHeader.fActivePorts * sizeof(int); // Data part is used to encode active ports
memcpy(fTxBuffer, &fTxHeader, HEADER_SIZE);
//PacketHeaderDisplay(&fTxHeader);
return Send(fTxHeader.fPacketSize, 0);
}
int JackNetMasterInterface::DataSend()
{
if (MidiSend(fNetMidiCaptureBuffer, fParams.fSendMidiChannels, fParams.fSendAudioChannels) == SOCKET_ERROR) {
return SOCKET_ERROR;
}
return AudioSend(fNetAudioCaptureBuffer, fParams.fSendAudioChannels);
}
int JackNetMasterInterface::SyncRecv()
{
int rx_bytes = 0;
packet_header_t* rx_head = reinterpret_cast<packet_header_t*>(fRxBuffer);
// receive sync (launch the cycle)
do {
rx_bytes = Recv(fParams.fMtu, MSG_PEEK);
// connection issue (return -1)
if (rx_bytes == SOCKET_ERROR) {
return SOCKET_ERROR;
}
}
while (strcmp(rx_head->fPacketType, "header") != 0);
//PacketHeaderDisplay(rx_head);
if (rx_head->fDataType != 's') {
jack_error("Wrong packet type : %c", rx_head->fDataType);
// not the last packet..
fRxHeader.fIsLastPckt = 0;
return SYNC_PACKET_ERROR;
}
fCurrentCycleOffset = fTxHeader.fCycle - rx_head->fCycle;
if (fCurrentCycleOffset < fMaxCycleOffset && !fSynched) {
jack_info("Synching with latency = %d", fCurrentCycleOffset);
return NET_SYNCHING;
} else {
if (fCurrentCycleOffset == fMaxCycleOffset) {
// when the sync offset is reached
fSynched = true;
}
rx_bytes = Recv(rx_head->fPacketSize, 0);
fRxHeader.fIsLastPckt = rx_head->fIsLastPckt;
return rx_bytes;
}
}
int JackNetMasterInterface::DataRecv()
{
int rx_bytes = 0;
uint recvd_midi_pckt = 0;
packet_header_t* rx_head = reinterpret_cast<packet_header_t*>(fRxBuffer);
while (!fRxHeader.fIsLastPckt) {
// how much data is queued on the rx buffer ?
rx_bytes = Recv(fParams.fMtu, MSG_PEEK);
// error here, problem with recv, just skip the cycle (return -1)
if (rx_bytes == SOCKET_ERROR) {
return rx_bytes;
}
if (rx_bytes && (rx_head->fDataStream == 'r') && (rx_head->fID == fParams.fID)) {
// read data
switch (rx_head->fDataType) {
case 'm': // midi
rx_bytes = MidiRecv(rx_head, fNetMidiPlaybackBuffer, recvd_midi_pckt);
break;
case 'a': // audio
rx_bytes = AudioRecv(rx_head, fNetAudioPlaybackBuffer);
break;
case 's': // sync
jack_info("NetMaster : missing last data packet from '%s'", fParams.fName);
return FinishRecv(fNetAudioPlaybackBuffer);
}
}
}
return rx_bytes;
}
void JackNetMasterInterface::EncodeSyncPacket(int frames)
{
// This method contains every step of sync packet informations coding
// first of all, clear sync packet
memset(fTxData, 0, PACKET_AVAILABLE_SIZE(&fParams));
// Transport not used for now...
/*
// then, first step : transport
if (fParams.fTransportSync) {
EncodeTransportData();
TransportDataHToN(&fSendTransportData, &fSendTransportData);
// copy to TxBuffer
memcpy(fTxData, &fSendTransportData, sizeof(net_transport_data_t));
}
// then others (freewheel etc.)
// ...
*/
// Write active ports list
fTxHeader.fActivePorts = (fNetAudioPlaybackBuffer) ? fNetAudioPlaybackBuffer->ActivePortsToNetwork(fTxData) : 0;
fTxHeader.fFrames = frames;
}
void JackNetMasterInterface::DecodeSyncPacket(int& frames)
{
// This method contains every step of sync packet informations decoding process
// Transport not used for now...
/*
// first : transport
if (fParams.fTransportSync) {
// copy received transport data to transport data structure
memcpy(&fReturnTransportData, fRxData, sizeof(net_transport_data_t));
TransportDataNToH(&fReturnTransportData, &fReturnTransportData);
DecodeTransportData();
}
// then others
// ...
*/
packet_header_t* rx_head = reinterpret_cast<packet_header_t*>(fRxBuffer);
// Read active ports list
if (fNetAudioCaptureBuffer) {
fNetAudioCaptureBuffer->ActivePortsFromNetwork(fRxData, rx_head->fActivePorts);
}
frames = rx_head->fFrames;
}
// JackNetSlaveInterface ************************************************************************************************
uint JackNetSlaveInterface::fSlaveCounter = 0;
void JackNetSlaveInterface::InitAPI()
{
// open Socket API with the first slave
if (fSlaveCounter++ == 0) {
if (SocketAPIInit() < 0) {
jack_error("Can't init Socket API, exiting...");
throw std::bad_alloc();
}
}
}
bool JackNetSlaveInterface::Init()
{
jack_log("JackNetSlaveInterface::Init()");
// set the parameters to send
strcpy(fParams.fPacketType, "params");
fParams.fProtocolVersion = NETWORK_PROTOCOL;
SetPacketType(&fParams, SLAVE_AVAILABLE);
// init loop : get a master and start, do it until connection is ok
net_status_t status;
do {
// first, get a master, do it until a valid connection is running
do {
status = SendAvailableToMaster();
if (status == NET_SOCKET_ERROR) {
return false;
}
}
while (status != NET_CONNECTED);
// then tell the master we are ready
jack_info("Initializing connection with %s...", fParams.fMasterNetName);
status = SendStartToMaster();
if (status == NET_ERROR) {
return false;
}
}
while (status != NET_ROLLING);
return true;
}
// Separate the connection protocol into two separated step
bool JackNetSlaveInterface::InitConnection(int time_out_sec)
{
jack_log("JackNetSlaveInterface::InitConnection time_out_sec = %d", time_out_sec);
int try_count = (time_out_sec > 0) ? int((1000000.f * float(time_out_sec)) / float(SLAVE_INIT_TIMEOUT)) : INT_MAX;
// set the parameters to send
strcpy(fParams.fPacketType, "params");
fParams.fProtocolVersion = NETWORK_PROTOCOL;
SetPacketType(&fParams, SLAVE_AVAILABLE);
return (SendAvailableToMaster(try_count) == NET_CONNECTED);
}
bool JackNetSlaveInterface::InitRendering()
{
jack_log("JackNetSlaveInterface::InitRendering()");
net_status_t status;
do {
// then tell the master we are ready
jack_info("Initializing connection with %s...", fParams.fMasterNetName);
status = SendStartToMaster();
if (status == NET_ERROR) {
return false;
}
}
while (status != NET_ROLLING);
return true;
}
net_status_t JackNetSlaveInterface::SendAvailableToMaster(int try_count)
{
jack_log("JackNetSlaveInterface::SendAvailableToMaster try_count = %d", try_count);
// utility
session_params_t host_params;
int rx_bytes = 0;
// socket
if (fSocket.NewSocket() == SOCKET_ERROR) {
jack_error("Fatal error : network unreachable - %s", StrError(NET_ERROR_CODE));
return NET_SOCKET_ERROR;
}
if (fSocket.IsLocal(fMulticastIP)) {
jack_info("Local IP is used...");
} else {
// bind the socket
if (fSocket.Bind() == SOCKET_ERROR) {
jack_error("Can't bind the socket : %s", StrError(NET_ERROR_CODE));
return NET_SOCKET_ERROR;
}
}
// timeout on receive (for init)
if (fSocket.SetTimeOut(SLAVE_INIT_TIMEOUT) == SOCKET_ERROR) {
jack_error("Can't set init timeout : %s", StrError(NET_ERROR_CODE));
}
// disable local loop
if (fSocket.SetLocalLoop() == SOCKET_ERROR) {
jack_error("Can't disable multicast loop : %s", StrError(NET_ERROR_CODE));
}
// send 'AVAILABLE' until 'SLAVE_SETUP' received
jack_info("Waiting for a master...");
do {
// send 'available'
session_params_t net_params;
memset(&net_params, 0, sizeof(session_params_t));
SessionParamsHToN(&fParams, &net_params);
if (fSocket.SendTo(&net_params, sizeof(session_params_t), 0, fMulticastIP) == SOCKET_ERROR) {
jack_error("Error in data send : %s", StrError(NET_ERROR_CODE));
}
// filter incoming packets : don't exit while no error is detected
memset(&net_params, 0, sizeof(session_params_t));
rx_bytes = fSocket.CatchHost(&net_params, sizeof(session_params_t), 0);
SessionParamsNToH(&net_params, &host_params);
if ((rx_bytes == SOCKET_ERROR) && (fSocket.GetError() != NET_NO_DATA)) {
jack_error("Can't receive : %s", StrError(NET_ERROR_CODE));
return NET_RECV_ERROR;
}
}
while (strcmp(host_params.fPacketType, fParams.fPacketType) && (GetPacketType(&host_params) != SLAVE_SETUP) && (--try_count > 0));
// time out failure..
if (try_count == 0) {
jack_error("Time out error in connect");
return NET_CONNECT_ERROR;
}
// everything is OK, copy parameters
fParams = host_params;
// connect the socket
if (fSocket.Connect() == SOCKET_ERROR) {
jack_error("Error in connect : %s", StrError(NET_ERROR_CODE));
return NET_CONNECT_ERROR;
}
return NET_CONNECTED;
}
net_status_t JackNetSlaveInterface::SendStartToMaster()
{
jack_log("JackNetSlaveInterface::SendStartToMaster");
// tell the master to start
session_params_t net_params;
memset(&net_params, 0, sizeof(session_params_t));
SetPacketType(&fParams, START_MASTER);
SessionParamsHToN(&fParams, &net_params);
if (fSocket.Send(&net_params, sizeof(session_params_t), 0) == SOCKET_ERROR) {
jack_error("Error in send : %s", StrError(NET_ERROR_CODE));
return (fSocket.GetError() == NET_CONN_ERROR) ? NET_ERROR : NET_SEND_ERROR;
}
return NET_ROLLING;
}
bool JackNetSlaveInterface::SetParams()
{
jack_log("JackNetSlaveInterface::SetParams audio in = %d audio out = %d MIDI in = %d MIDI out = %d",
fParams.fSendAudioChannels, fParams.fReturnAudioChannels,
fParams.fSendMidiChannels, fParams.fReturnMidiChannels);
JackNetInterface::SetParams();
fTxHeader.fDataStream = 'r';
fRxHeader.fDataStream = 's';
// midi net buffers
if (fParams.fSendMidiChannels > 0) {
fNetMidiCaptureBuffer = new NetMidiBuffer(&fParams, fParams.fSendMidiChannels, fRxData);
}
if (fParams.fReturnMidiChannels > 0) {
fNetMidiPlaybackBuffer = new NetMidiBuffer(&fParams, fParams.fReturnMidiChannels, fTxData);
}
try {
// audio net buffers
if (fParams.fSendAudioChannels > 0) {
fNetAudioCaptureBuffer = AudioBufferFactory(fParams.fSendAudioChannels, fRxData);
assert(fNetAudioCaptureBuffer);
}
if (fParams.fReturnAudioChannels > 0) {
fNetAudioPlaybackBuffer = AudioBufferFactory(fParams.fReturnAudioChannels, fTxData);
assert(fNetAudioPlaybackBuffer);
}
} catch (exception&) {
jack_error("NetAudioBuffer on slave allocation error...");
return false;
}
// set the new buffer sizes
if (SetNetBufferSize() == SOCKET_ERROR) {
jack_error("Can't set net buffer sizes : %s", StrError(NET_ERROR_CODE));
goto error;
}
return true;
error:
FreeNetworkBuffers();
return false;
}
void JackNetSlaveInterface::FatalRecvError()
{
throw JackNetException("Recv connection lost error");
}
void JackNetSlaveInterface::FatalSendError()
{
throw JackNetException("Send connection lost error");
}
int JackNetSlaveInterface::Recv(size_t size, int flags)
{
int rx_bytes = fSocket.Recv(fRxBuffer, size, flags);
// handle errors
if (rx_bytes == SOCKET_ERROR) {
FatalRecvError();
}
packet_header_t* header = reinterpret_cast<packet_header_t*>(fRxBuffer);
PacketHeaderNToH(header, header);
return rx_bytes;
}
int JackNetSlaveInterface::Send(size_t size, int flags)
{
packet_header_t* header = reinterpret_cast<packet_header_t*>(fTxBuffer);
PacketHeaderHToN(header, header);
int tx_bytes = fSocket.Send(fTxBuffer, size, flags);
// handle errors
if (tx_bytes == SOCKET_ERROR) {
FatalSendError();
}
return tx_bytes;
}
int JackNetSlaveInterface::SyncRecv()
{
SetRcvTimeOut();
int rx_bytes = 0;
packet_header_t* rx_head = reinterpret_cast<packet_header_t*>(fRxBuffer);
// receive sync (launch the cycle)
do {
rx_bytes = Recv(fParams.fMtu, 0);
// connection issue (return -1)
if (rx_bytes == SOCKET_ERROR) {
return rx_bytes;
}
}
while (strcmp(rx_head->fPacketType, "header") != 0);
if (rx_head->fDataType != 's') {
jack_error("Wrong packet type : %c", rx_head->fDataType);
// not the last packet...
fRxHeader.fIsLastPckt = 0;
return SYNC_PACKET_ERROR;
}
//PacketHeaderDisplay(rx_head);
fRxHeader.fIsLastPckt = rx_head->fIsLastPckt;
return rx_bytes;
}
int JackNetSlaveInterface::DataRecv()
{
int rx_bytes = 0;
uint recvd_midi_pckt = 0;
packet_header_t* rx_head = reinterpret_cast<packet_header_t*>(fRxBuffer);
while (!fRxHeader.fIsLastPckt) {
// how much data is queued on the rx buffer ?
rx_bytes = Recv(fParams.fMtu, MSG_PEEK);
// error here, just skip the cycle (return -1)
if (rx_bytes == SOCKET_ERROR) {
return rx_bytes;
}
if (rx_bytes && (rx_head->fDataStream == 's') && (rx_head->fID == fParams.fID)) {
// read data
switch (rx_head->fDataType) {
case 'm': // midi
rx_bytes = MidiRecv(rx_head, fNetMidiCaptureBuffer, recvd_midi_pckt);
break;
case 'a': // audio
rx_bytes = AudioRecv(rx_head, fNetAudioCaptureBuffer);
break;
case 's': // sync
jack_info("NetSlave : missing last data packet");
return FinishRecv(fNetAudioCaptureBuffer);
}
}
}
fRxHeader.fCycle = rx_head->fCycle;
return rx_bytes;
}
int JackNetSlaveInterface::SyncSend()
{
// tx header
if (fParams.fSlaveSyncMode) {
fTxHeader.fCycle = fRxHeader.fCycle;
} else {
fTxHeader.fCycle++;
}
fTxHeader.fSubCycle = 0;
fTxHeader.fDataType = 's';
fTxHeader.fIsLastPckt = (fParams.fReturnMidiChannels == 0 && fParams.fReturnAudioChannels == 0) ? 1 : 0;
fTxHeader.fPacketSize = HEADER_SIZE + fTxHeader.fActivePorts * sizeof(int); // Data part is used to encode active ports
memcpy(fTxBuffer, &fTxHeader, HEADER_SIZE);
//PacketHeaderDisplay(&fTxHeader);
return Send(fTxHeader.fPacketSize, 0);
}
int JackNetSlaveInterface::DataSend()
{
if (MidiSend(fNetMidiPlaybackBuffer, fParams.fReturnMidiChannels, fParams.fReturnAudioChannels) == SOCKET_ERROR) {
return SOCKET_ERROR;
}
return AudioSend(fNetAudioPlaybackBuffer, fParams.fReturnAudioChannels);
}
// network sync------------------------------------------------------------------------
void JackNetSlaveInterface::EncodeSyncPacket(int frames)
{
// This method contains every step of sync packet informations coding
// first of all, clear sync packet
memset(fTxData, 0, PACKET_AVAILABLE_SIZE(&fParams));
// then first step : transport
// Transport is not used for now...
/*
if (fParams.fTransportSync) {
EncodeTransportData();
TransportDataHToN(&fReturnTransportData, &fReturnTransportData);
// copy to TxBuffer
memcpy(fTxData, &fReturnTransportData, sizeof(net_transport_data_t));
}
// then others
// ...
*/
// Write active ports list
fTxHeader.fActivePorts = (fNetAudioCaptureBuffer) ? fNetAudioCaptureBuffer->ActivePortsToNetwork(fTxData) : 0;
fTxHeader.fFrames = frames;
}
void JackNetSlaveInterface::DecodeSyncPacket(int& frames)
{
// This method contains every step of sync packet informations decoding process
// Transport not used for now...
/*
// first : transport
if (fParams.fTransportSync) {
// copy received transport data to transport data structure
memcpy(&fSendTransportData, fRxData, sizeof(net_transport_data_t));
TransportDataNToH(&fSendTransportData, &fSendTransportData);
DecodeTransportData();
}
// then others
// ...
*/
packet_header_t* rx_head = reinterpret_cast<packet_header_t*>(fRxBuffer);
// Read active ports list
if (fNetAudioPlaybackBuffer) {
fNetAudioPlaybackBuffer->ActivePortsFromNetwork(fRxData, rx_head->fActivePorts);
}
frames = rx_head->fFrames;
}
}
Jack
Definition: JackAC3Encoder.cpp:30
std
jack_error
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92
jack_info
SERVER_EXPORT void jack_info(const char *fmt,...)
Definition: JackError.cpp:100
jack_log
SERVER_EXPORT void jack_log(const char *fmt,...)
Definition: JackError.cpp:108