JackNetInterface.cpp 33.7 KB
Newer Older
1
/*
sletz's avatar
sletz committed
2
Copyright (C) 2008-2011 Romain Moret at Grame
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

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"
sletz's avatar
sletz committed
21
22
#include "JackError.h"

23
#include <assert.h>
24
25
26

using namespace std;

27
28
29
/*
 TODO : since midi buffers now uses up to BUFFER_SIZE_MAX frames,
 probably also use BUFFER_SIZE_MAX in everything related to MIDI events
30
31
32
 handling (see MidiBufferInit in JackMidiPort.cpp)
*/

33
34
35
36
namespace Jack
{
    // JackNetInterface*******************************************

37
38
    JackNetInterface::JackNetInterface() : fSocket()
    {
sletz's avatar
sletz committed
39
        Initialize();
40
41
    }

sletz's avatar
sletz committed
42
    JackNetInterface::JackNetInterface(const char* multicast_ip, int port) : fSocket(multicast_ip, port)
43
    {
44
        strcpy(fMulticastIP, multicast_ip);
sletz's avatar
sletz committed
45
        Initialize();
46
47
    }

sletz's avatar
sletz committed
48
    JackNetInterface::JackNetInterface(session_params_t& params, JackNetSocket& socket, const char* multicast_ip) : fSocket(socket)
49
    {
moret's avatar
moret committed
50
        fParams = params;
51
        strcpy(fMulticastIP, multicast_ip);
sletz's avatar
sletz committed
52
53
        Initialize();
    }
sletz's avatar
sletz committed
54

sletz's avatar
sletz committed
55
56
    void JackNetInterface::Initialize()
    {
57
        fSetTimeOut = false;
58
59
60
61
62
63
        fTxBuffer = NULL;
        fRxBuffer = NULL;
        fNetAudioCaptureBuffer = NULL;
        fNetAudioPlaybackBuffer = NULL;
        fNetMidiCaptureBuffer = NULL;
        fNetMidiPlaybackBuffer = NULL;
64
65
        memset(&fSendTransportData, 0, sizeof(net_transport_data_t));
        memset(&fReturnTransportData, 0, sizeof(net_transport_data_t));
66
67
    }

sletz's avatar
sletz committed
68
69
70
71
72
73
74
75
76
77
78
    void JackNetInterface::FreeNetworkBuffers()
    {
        delete fNetMidiCaptureBuffer;
        delete fNetMidiPlaybackBuffer;
        delete fNetAudioCaptureBuffer;
        delete fNetAudioPlaybackBuffer;
        fNetMidiCaptureBuffer = NULL;
        fNetMidiPlaybackBuffer = NULL;
        fNetAudioCaptureBuffer = NULL;
        fNetAudioPlaybackBuffer = NULL;
    }
sletz's avatar
sletz committed
79

80
81
    JackNetInterface::~JackNetInterface()
    {
sletz's avatar
sletz committed
82
        jack_log("JackNetInterface::~JackNetInterface");
moret's avatar
moret committed
83

84
85
86
87
88
89
90
91
92
        fSocket.Close();
        delete[] fTxBuffer;
        delete[] fRxBuffer;
        delete fNetAudioCaptureBuffer;
        delete fNetAudioPlaybackBuffer;
        delete fNetMidiCaptureBuffer;
        delete fNetMidiPlaybackBuffer;
    }

moret's avatar
moret committed
93
94
    int JackNetInterface::SetNetBufferSize()
    {
sletz's avatar
sletz committed
95
        // audio
sletz's avatar
sletz committed
96
        float audio_size = (fNetAudioCaptureBuffer)
sletz's avatar
sletz committed
97
98
                        ? fNetAudioCaptureBuffer->GetCycleSize()
                        : (fNetAudioPlaybackBuffer) ? fNetAudioPlaybackBuffer->GetCycleSize() : 0;
sletz's avatar
sletz committed
99
        jack_log("audio_size %f", audio_size);
sletz's avatar
sletz committed
100

sletz's avatar
sletz committed
101
        // midi
sletz's avatar
sletz committed
102
        float midi_size = (fNetMidiCaptureBuffer)
sletz's avatar
sletz committed
103
104
                        ? fNetMidiCaptureBuffer->GetCycleSize()
                        : (fNetMidiPlaybackBuffer) ? fNetMidiPlaybackBuffer->GetCycleSize() : 0;
sletz's avatar
sletz committed
105
        jack_log("midi_size %f", midi_size);
sletz's avatar
sletz committed
106

sletz's avatar
sletz committed
107
108
        // bufsize = sync + audio + midi
        int bufsize = NETWORK_MAX_LATENCY * (fParams.fMtu + (int)audio_size + (int)midi_size);
sletz's avatar
sletz committed
109
        jack_log("SetNetBufferSize bufsize = %d", bufsize);
moret's avatar
moret committed
110

sletz's avatar
sletz committed
111
        // tx buffer
112
        if (fSocket.SetOption(SOL_SOCKET, SO_SNDBUF, &bufsize, sizeof(bufsize)) == SOCKET_ERROR) {
113
            return SOCKET_ERROR;
114
        }
moret's avatar
moret committed
115

sletz's avatar
sletz committed
116
        // rx buffer
117
        if (fSocket.SetOption(SOL_SOCKET, SO_RCVBUF, &bufsize, sizeof(bufsize)) == SOCKET_ERROR) {
118
            return SOCKET_ERROR;
119
        }
moret's avatar
moret committed
120

121
        return 0;
moret's avatar
moret committed
122
123
    }

sletz's avatar
sletz committed
124
    bool JackNetInterface::SetParams()
moret's avatar
moret committed
125
    {
sletz's avatar
sletz committed
126
        // TX header init
sletz's avatar
sletz committed
127
        strcpy(fTxHeader.fPacketType, "header");
128
129
130
        fTxHeader.fID = fParams.fID;
        fTxHeader.fCycle = 0;
        fTxHeader.fSubCycle = 0;
moret's avatar
moret committed
131
        fTxHeader.fIsLastPckt = 0;
132

sletz's avatar
sletz committed
133
        // RX header init
sletz's avatar
sletz committed
134
        strcpy(fRxHeader.fPacketType, "header");
135
136
137
        fRxHeader.fID = fParams.fID;
        fRxHeader.fCycle = 0;
        fRxHeader.fSubCycle = 0;
moret's avatar
moret committed
138
        fRxHeader.fIsLastPckt = 0;
139

sletz's avatar
sletz committed
140
        // network buffers
141
142
        fTxBuffer = new char[fParams.fMtu];
        fRxBuffer = new char[fParams.fMtu];
sletz's avatar
sletz committed
143
144
        assert(fTxBuffer);
        assert(fRxBuffer);
145

sletz's avatar
sletz committed
146
        // net audio/midi buffers'addresses
sletz's avatar
sletz committed
147
148
        fTxData = fTxBuffer + HEADER_SIZE;
        fRxData = fRxBuffer + HEADER_SIZE;
sletz's avatar
sletz committed
149

sletz's avatar
sletz committed
150
        return true;
151
152
    }

sletz's avatar
sletz committed
153
154
155
156
157
158
    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();
159
            fTxHeader.fNumPacket = buffer->GetNumPackets(data_size, PACKET_AVAILABLE_SIZE(&fParams));
sletz's avatar
sletz committed
160
161
162
163
164
165

            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);
166
                if (Send(fTxHeader.fPacketSize, 0) == SOCKET_ERROR) {
sletz's avatar
sletz committed
167
                    return SOCKET_ERROR;
168
                }
sletz's avatar
sletz committed
169
170
171
172
173
174
175
176
177
178
            }
        }
        return 0;
    }

    int JackNetInterface::AudioSend(NetAudioBuffer* buffer, int audio_channels)
    {
        // audio
        if (audio_channels > 0) {
            fTxHeader.fDataType = 'a';
sletz's avatar
sletz committed
179
180
            fTxHeader.fActivePorts = buffer->RenderFromJackPorts();
            fTxHeader.fNumPacket = buffer->GetNumPackets(fTxHeader.fActivePorts);
sletz's avatar
sletz committed
181
182
183
184
185
186
187

            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);
188
                if (Send(fTxHeader.fPacketSize, 0) == SOCKET_ERROR) {
sletz's avatar
sletz committed
189
                    return SOCKET_ERROR;
190
                }
sletz's avatar
sletz committed
191
192
193
194
195
196
197
198
199
200
201
            }
        }
        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);
sletz's avatar
sletz committed
202
        
sletz's avatar
sletz committed
203
        // Last midi packet is received, so finish rendering...
204
        if (++recvd_midi_pckt == rx_head->fNumPacket) {
sletz's avatar
sletz committed
205
            buffer->RenderToJackPorts();
206
        }
sletz's avatar
sletz committed
207
208
209
210
211
212
213
214
215
216
        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;
sletz's avatar
sletz committed
217
        rx_bytes = buffer->RenderFromNetwork(rx_head->fCycle, rx_head->fSubCycle, fRxHeader.fActivePorts);
sletz's avatar
sletz committed
218
        
sletz's avatar
sletz committed
219
        // Last audio packet is received, so finish rendering...
220
        if (fRxHeader.fIsLastPckt) {
sletz's avatar
sletz committed
221
            buffer->RenderToJackPorts();
222
        }
sletz's avatar
sletz committed
223
224
225
226
227
228
229
230
231
        return rx_bytes;
    }

    int JackNetInterface::FinishRecv(NetAudioBuffer* buffer)
    {
        buffer->RenderToJackPorts();
        return NET_PACKET_ERROR;
    }

232
233
234
235
236
237
238
239
240
241
242
    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
sletz's avatar
sletz committed
243
            case JackCeltEncoder:
244
245
                return new NetCeltAudioBuffer(&fParams, nports, buffer, fParams.fKBps);
            #endif
Robin Gareus's avatar
Robin Gareus committed
246
247
248
249
            #if HAVE_OPUS
            case JackOpusEncoder:
                return new NetOpusAudioBuffer(&fParams, nports, buffer, fParams.fKBps);
            #endif
250
        }
251
252
        
        throw std::bad_alloc();
253
    }
254
255
256
257
258
259
260
261
262
263
264
    
    void JackNetInterface::SetRcvTimeOut()
    {
        if (!fSetTimeOut) {
            if (fSocket.SetTimeOut(PACKET_TIMEOUT) == SOCKET_ERROR) {
                jack_error("Can't set rx timeout : %s", StrError(NET_ERROR_CODE));
                return;
            }
            fSetTimeOut = true;
        }
    }
265

266
    // JackNetMasterInterface ************************************************************************************
267

268
    bool JackNetMasterInterface::Init()
269
    {
sletz's avatar
sletz committed
270
        jack_log("JackNetMasterInterface::Init : ID %u", fParams.fID);
271

272
        session_params_t host_params;
273
        uint attempt = 0;
274
275
        int rx_bytes = 0;

sletz's avatar
sletz committed
276
        // socket
sletz's avatar
sletz committed
277
278
        if (fSocket.NewSocket() == SOCKET_ERROR) {
            jack_error("Can't create socket : %s", StrError(NET_ERROR_CODE));
279
            return false;
280
281
        }

sletz's avatar
sletz committed
282
        // timeout on receive (for init)
283
284
285
        if (fSocket.SetTimeOut(MASTER_INIT_TIMEOUT) < 0) {
            jack_error("Can't set init timeout : %s", StrError(NET_ERROR_CODE));
        }
286

sletz's avatar
sletz committed
287
        // connect
sletz's avatar
sletz committed
288
289
        if (fSocket.Connect() == SOCKET_ERROR) {
            jack_error("Can't connect : %s", StrError(NET_ERROR_CODE));
290
291
            return false;
        }
292

sletz's avatar
sletz committed
293
        // send 'SLAVE_SETUP' until 'START_MASTER' received
sletz's avatar
sletz committed
294
        jack_info("Sending parameters to %s...", fParams.fSlaveNetName);
295
296
        do
        {
297
            session_params_t net_params;
sletz's avatar
sletz committed
298
299
            memset(&net_params, 0, sizeof(session_params_t));
            SetPacketType(&fParams, SLAVE_SETUP);
300
            SessionParamsHToN(&fParams, &net_params);
301

302
            if (fSocket.Send(&net_params, sizeof(session_params_t), 0) == SOCKET_ERROR) {
sletz's avatar
sletz committed
303
                jack_error("Error in send : %s", StrError(NET_ERROR_CODE));
304
            }
305

sletz's avatar
sletz committed
306
            memset(&net_params, 0, sizeof(session_params_t));
307
            if (((rx_bytes = fSocket.Recv(&net_params, sizeof(session_params_t), 0)) == SOCKET_ERROR) && (fSocket.GetError() != NET_NO_DATA)) {
sletz's avatar
sletz committed
308
                jack_error("Problem with network");
309
                return false;
310
            }
311

312
            SessionParamsNToH(&net_params, &host_params);
313
        }
sletz's avatar
sletz committed
314
        while ((GetPacketType(&host_params) != START_MASTER) && (++attempt < SLAVE_SETUP_RETRY));
sletz's avatar
sletz committed
315
        
sletz's avatar
sletz committed
316
317
        if (attempt == SLAVE_SETUP_RETRY) {
            jack_error("Slave doesn't respond, exiting");
318
            return false;
319
320
        }

321
        return true;
322
323
    }

sletz's avatar
sletz committed
324
    bool JackNetMasterInterface::SetParams()
moret's avatar
moret committed
325
    {
sletz's avatar
sletz committed
326
        jack_log("JackNetMasterInterface::SetParams audio in = %d audio out = %d MIDI in = %d MIDI out = %d",
327
328
            fParams.fSendAudioChannels, fParams.fReturnAudioChannels,
            fParams.fSendMidiChannels, fParams.fReturnMidiChannels);
moret's avatar
moret committed
329
330
331

        JackNetInterface::SetParams();

332
333
        fTxHeader.fDataStream = 's';
        fRxHeader.fDataStream = 'r';
moret's avatar
moret committed
334

sletz's avatar
sletz committed
335
336
337
        fMaxCycleOffset = fParams.fNetworkLatency;

        // midi net buffers
338
        if (fParams.fSendMidiChannels > 0) {
sletz's avatar
sletz committed
339
            fNetMidiCaptureBuffer = new NetMidiBuffer(&fParams, fParams.fSendMidiChannels, fTxData);
340
        }
sletz's avatar
sletz committed
341

342
        if (fParams.fReturnMidiChannels > 0) {
sletz's avatar
sletz committed
343
            fNetMidiPlaybackBuffer = new NetMidiBuffer(&fParams, fParams.fReturnMidiChannels, fRxData);
344
        }
sletz's avatar
sletz committed
345

sletz's avatar
sletz committed
346
        try {
sletz's avatar
sletz committed
347

sletz's avatar
sletz committed
348
            // audio net buffers
sletz's avatar
sletz committed
349
            if (fParams.fSendAudioChannels > 0) {
350
                fNetAudioCaptureBuffer = AudioBufferFactory(fParams.fSendAudioChannels, fTxData);
sletz's avatar
sletz committed
351
352
                assert(fNetAudioCaptureBuffer);
            }
sletz's avatar
sletz committed
353

sletz's avatar
sletz committed
354
            if (fParams.fReturnAudioChannels > 0) {
355
                fNetAudioPlaybackBuffer = AudioBufferFactory(fParams.fReturnAudioChannels, fRxData);
sletz's avatar
sletz committed
356
357
                assert(fNetAudioPlaybackBuffer);
            }
sletz's avatar
sletz committed
358

sletz's avatar
sletz committed
359
360
361
362
        } catch (exception&) {
            jack_error("NetAudioBuffer allocation error...");
            return false;
        }
moret's avatar
moret committed
363

364
        // set the new buffer size
sletz's avatar
sletz committed
365
366
        if (SetNetBufferSize() == SOCKET_ERROR) {
            jack_error("Can't set net buffer sizes : %s", StrError(NET_ERROR_CODE));
sletz's avatar
sletz committed
367
368
            goto error;
        }
sletz's avatar
sletz committed
369

sletz's avatar
sletz committed
370
        return true;
sletz's avatar
sletz committed
371

sletz's avatar
sletz committed
372
    error:
sletz's avatar
sletz committed
373
        FreeNetworkBuffers();
sletz's avatar
sletz committed
374
        return false;
moret's avatar
moret committed
375
376
    }

377
    void JackNetMasterInterface::Exit()
378
    {
sletz's avatar
sletz committed
379
        jack_log("JackNetMasterInterface::Exit, ID %u", fParams.fID);
380

sletz's avatar
sletz committed
381
        // stop process
382
        fRunning = false;
383

sletz's avatar
sletz committed
384
        // send a 'multicast euthanasia request' - new socket is required on macosx
385
        jack_info("Exiting '%s'  %s", fParams.fName, fMulticastIP);
sletz's avatar
sletz committed
386
387
        SetPacketType(&fParams, KILL_MASTER);
        JackNetSocket mcast_socket(fMulticastIP, fSocket.GetPort());
388

389
        session_params_t net_params;
sletz's avatar
sletz committed
390
        memset(&net_params, 0, sizeof(session_params_t));
391
392
        SessionParamsHToN(&fParams, &net_params);

393
        if (mcast_socket.NewSocket() == SOCKET_ERROR) {
sletz's avatar
sletz committed
394
            jack_error("Can't create socket : %s", StrError(NET_ERROR_CODE));
395
396
        }
        if (mcast_socket.SendTo(&net_params, sizeof(session_params_t), 0, fMulticastIP) == SOCKET_ERROR) {
sletz's avatar
sletz committed
397
            jack_error("Can't send suicide request : %s", StrError(NET_ERROR_CODE));
398
        }
399

400
401
402
        mcast_socket.Close();
    }

403
    void JackNetMasterInterface::FatalRecvError()
sletz's avatar
sletz committed
404
    {
sletz's avatar
sletz committed
405
        // fatal connection issue, exit
406
407
408
409
410
411
412
413
414
415
416
        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);
sletz's avatar
sletz committed
417
        // ask to the manager to properly remove the master
sletz's avatar
sletz committed
418
419
420
421
422
        Exit();
        // UGLY temporary way to be sure the thread does not call code possibly causing a deadlock in JackEngine.
        ThreadExit();
    }

sletz's avatar
sletz committed
423
    int JackNetMasterInterface::Recv(size_t size, int flags)
424
    {
425
        int rx_bytes;
sletz's avatar
sletz committed
426

sletz's avatar
sletz committed
427
        if (((rx_bytes = fSocket.Recv(fRxBuffer, size, flags)) == SOCKET_ERROR) && fRunning) {
428
            FatalRecvError();
429
        }
430
  
431
432
433
        packet_header_t* header = reinterpret_cast<packet_header_t*>(fRxBuffer);
        PacketHeaderNToH(header, header);
        return rx_bytes;
434
    }
435

sletz's avatar
sletz committed
436
    int JackNetMasterInterface::Send(size_t size, int flags)
437
    {
438
439
440
        int tx_bytes;
        packet_header_t* header = reinterpret_cast<packet_header_t*>(fTxBuffer);
        PacketHeaderHToN(header, header);
441

sletz's avatar
sletz committed
442
        if (((tx_bytes = fSocket.Send(fTxBuffer, size, flags)) == SOCKET_ERROR) && fRunning) {
443
            FatalSendError();
444
        }
445
        return tx_bytes;
446
    }
447

448
    int JackNetMasterInterface::SyncSend()
449
    {
450
451
        SetRcvTimeOut();
        
452
453
454
        fTxHeader.fCycle++;
        fTxHeader.fSubCycle = 0;
        fTxHeader.fDataType = 's';
455
        fTxHeader.fIsLastPckt = (fParams.fSendMidiChannels == 0 && fParams.fSendAudioChannels == 0) ? 1 : 0;
sletz's avatar
sletz committed
456
        fTxHeader.fPacketSize = fParams.fMtu;
sletz's avatar
sletz committed
457

sletz's avatar
sletz committed
458
        memcpy(fTxBuffer, &fTxHeader, HEADER_SIZE);
sletz's avatar
sletz committed
459
        // PacketHeaderDisplay(&fTxHeader);
sletz's avatar
sletz committed
460
        return Send(fTxHeader.fPacketSize, 0);
461
462
463
464
    }

    int JackNetMasterInterface::DataSend()
    {
465
        if (MidiSend(fNetMidiCaptureBuffer, fParams.fSendMidiChannels, fParams.fSendAudioChannels) == SOCKET_ERROR) {
sletz's avatar
sletz committed
466
            return SOCKET_ERROR;
467
        }
sletz's avatar
sletz committed
468
        return AudioSend(fNetAudioCaptureBuffer, fParams.fSendAudioChannels);
469
470
    }

471
    int JackNetMasterInterface::SyncRecv()
472
    {
sletz's avatar
sletz committed
473
        int rx_bytes = 0;
sletz's avatar
sletz committed
474
        packet_header_t* rx_head = reinterpret_cast<packet_header_t*>(fRxBuffer);
sletz's avatar
sletz committed
475
476
477
478
479
480
481
482
483

        // receive sync (launch the cycle)
        do {
            rx_bytes = Recv(fParams.fMtu, MSG_PEEK);
            // connection issue, send will detect it, so don't skip the cycle (return 0)
            if (rx_bytes == SOCKET_ERROR) {
                return SOCKET_ERROR;
            }
        }
484
485
486
        while (strcmp(rx_head->fPacketType, "header") != 0);
        
        if (rx_head->fDataType != 's') {
487
            jack_error("Wrong packet type : %c", rx_head->fDataType);
488
            // not the last packet..
Stephane Letz's avatar
Stephane Letz committed
489
            fRxHeader.fIsLastPckt = 0;
490
            return NET_PACKET_ERROR;
491
492
        }
    
sletz's avatar
sletz committed
493
        fCurrentCycleOffset = fTxHeader.fCycle - rx_head->fCycle;
494

495
        if (fCurrentCycleOffset < fMaxCycleOffset && !fSynched) {
sletz's avatar
sletz committed
496
            jack_info("Synching with latency = %d", fCurrentCycleOffset);
Stephane Letz's avatar
Stephane Letz committed
497
            return NET_SYNCHING;
498
        } else {
499
500
501
502
            if (fCurrentCycleOffset == fMaxCycleOffset) {
                // when the sync offset is reached 
                fSynched = true;
            }
503
            rx_bytes = Recv(rx_head->fPacketSize, 0);
504
505
            fRxHeader.fIsLastPckt = rx_head->fIsLastPckt;
            return rx_bytes;
506
        }
507
    }
508

509
    int JackNetMasterInterface::DataRecv()
510
511
    {
        int rx_bytes = 0;
512
        uint recvd_midi_pckt = 0;
sletz's avatar
sletz committed
513
        packet_header_t* rx_head = reinterpret_cast<packet_header_t*>(fRxBuffer);
Stephane Letz's avatar
Stephane Letz committed
514
     
sletz's avatar
sletz committed
515
516
        while (!fRxHeader.fIsLastPckt) {
            // how much data is queued on the rx buffer ?
sletz's avatar
sletz committed
517
            rx_bytes = Recv(fParams.fMtu, MSG_PEEK);
sletz's avatar
sletz committed
518
         
sletz's avatar
sletz committed
519
            // error here, problem with recv, just skip the cycle (return -1)
520
            if (rx_bytes == SOCKET_ERROR) {
moret's avatar
moret committed
521
                return rx_bytes;
522
            }
sletz's avatar
sletz committed
523

sletz's avatar
sletz committed
524
525
526
527
528
529
            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);
moret's avatar
moret committed
530
                        break;
531

sletz's avatar
sletz committed
532
533
                    case 'a':   // audio
                        rx_bytes = AudioRecv(rx_head, fNetAudioPlaybackBuffer);
moret's avatar
moret committed
534
                        break;
535

sletz's avatar
sletz committed
536
                    case 's':   // sync
537
                        jack_info("NetMaster : missing last data packet from '%s'", fParams.fName);
sletz's avatar
sletz committed
538
                        return FinishRecv(fNetAudioPlaybackBuffer);
539
540
541
                }
            }
        }
sletz's avatar
sletz committed
542
   
543
        return rx_bytes;
544
    }
545

546
    void JackNetMasterInterface::EncodeSyncPacket()
547
    {
sletz's avatar
sletz committed
548
        // This method contains every step of sync packet informations coding
sletz's avatar
sletz committed
549
        // first of all, clear sync packet
550
        memset(fTxData, 0, PACKET_AVAILABLE_SIZE(&fParams));
551
552
553
    
        // Transport not used for now...
        /*
sletz's avatar
sletz committed
554
        // then, first step : transport
555
        if (fParams.fTransportSync) {
sletz's avatar
sletz committed
556
            EncodeTransportData();
sletz's avatar
sletz committed
557
            TransportDataHToN(&fSendTransportData, &fSendTransportData);
sletz's avatar
sletz committed
558
            // copy to TxBuffer
sletz's avatar
sletz committed
559
            memcpy(fTxData, &fSendTransportData, sizeof(net_transport_data_t));
560
        }
sletz's avatar
sletz committed
561
562
        // then others (freewheel etc.)
        // ...
563
564
        */
   
sletz's avatar
sletz committed
565
        // Write active ports list
sletz's avatar
sletz committed
566
        fTxHeader.fActivePorts = (fNetAudioPlaybackBuffer) ? fNetAudioPlaybackBuffer->ActivePortsToNetwork(fTxData) : 0;
567
568
    }

569
    void JackNetMasterInterface::DecodeSyncPacket()
570
    {
sletz's avatar
sletz committed
571
        // This method contains every step of sync packet informations decoding process
572
573
574
        
        // Transport not used for now...
        /*
sletz's avatar
sletz committed
575
        // first : transport
576
        if (fParams.fTransportSync) {
sletz's avatar
sletz committed
577
            // copy received transport data to transport data structure
sletz's avatar
sletz committed
578
579
            memcpy(&fReturnTransportData, fRxData, sizeof(net_transport_data_t));
            TransportDataNToH(&fReturnTransportData,  &fReturnTransportData);
sletz's avatar
sletz committed
580
            DecodeTransportData();
581
        }
sletz's avatar
sletz committed
582
583
        // then others
        // ...
584
585
        */
       
sletz's avatar
sletz committed
586
587
588
589
590
591
        packet_header_t* rx_head = reinterpret_cast<packet_header_t*>(fRxBuffer);

        // Read active ports list
        if (fNetAudioCaptureBuffer) {
            fNetAudioCaptureBuffer->ActivePortsFromNetwork(fRxData, rx_head->fActivePorts);
        }
592
    }
593

594
595
// JackNetSlaveInterface ************************************************************************************************

moret's avatar
moret committed
596
597
    uint JackNetSlaveInterface::fSlaveCounter = 0;

sletz's avatar
sletz committed
598
599
600
601
602
603
604
605
606
607
608
    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();
            }
        }
    }

609
    bool JackNetSlaveInterface::Init()
610
    {
sletz's avatar
sletz committed
611
        jack_log("JackNetSlaveInterface::Init()");
612

sletz's avatar
sletz committed
613
        // set the parameters to send
sletz's avatar
sletz committed
614
        strcpy(fParams.fPacketType, "params");
Stephane Letz's avatar
Stephane Letz committed
615
        fParams.fProtocolVersion = NETWORK_PROTOCOL;
sletz's avatar
sletz committed
616
        SetPacketType(&fParams, SLAVE_AVAILABLE);
617

sletz's avatar
sletz committed
618
        // init loop : get a master and start, do it until connection is ok
619
        net_status_t status;
620
        do {
sletz's avatar
sletz committed
621
            // first, get a master, do it until a valid connection is running
622
            do {
623
                status = SendAvailableToMaster();
624
                if (status == NET_SOCKET_ERROR) {
625
                    return false;
626
                }
627
            }
sletz's avatar
sletz committed
628
            while (status != NET_CONNECTED);
629

sletz's avatar
sletz committed
630
            // then tell the master we are ready
sletz's avatar
sletz committed
631
            jack_info("Initializing connection with %s...", fParams.fMasterNetName);
moret's avatar
moret committed
632
            status = SendStartToMaster();
633
            if (status == NET_ERROR) {
634
                return false;
635
            }
636
        }
sletz's avatar
sletz committed
637
        while (status != NET_ROLLING);
638

639
640
        return true;
    }
641

642
    // Separate the connection protocol into two separated step
sletz's avatar
sletz committed
643
    bool JackNetSlaveInterface::InitConnection(int time_out_sec)
644
    {
sletz's avatar
sletz committed
645
        jack_log("JackNetSlaveInterface::InitConnection()");
Stephane Letz's avatar
Stephane Letz committed
646
        int try_count = (time_out_sec > 0) ? ((1000000 * time_out_sec) / SLAVE_INIT_TIMEOUT) : INT_MAX;
647

sletz's avatar
sletz committed
648
        // set the parameters to send
sletz's avatar
sletz committed
649
        strcpy(fParams.fPacketType, "params");
Stephane Letz's avatar
Stephane Letz committed
650
        fParams.fProtocolVersion = NETWORK_PROTOCOL;
sletz's avatar
sletz committed
651
        SetPacketType(&fParams, SLAVE_AVAILABLE);
652
653

        net_status_t status;
654
        do {
sletz's avatar
sletz committed
655
            // get a master
sletz's avatar
sletz committed
656
            status = SendAvailableToMaster(try_count);
657
            if (status == NET_SOCKET_ERROR) {
658
                return false;
659
            }
660
        }
sletz's avatar
sletz committed
661
        while (status != NET_CONNECTED && --try_count > 0);
662

sletz's avatar
sletz committed
663
        return (try_count != 0);
664
    }
665

666
667
668
669
670
    bool JackNetSlaveInterface::InitRendering()
    {
        jack_log("JackNetSlaveInterface::InitRendering()");

        net_status_t status;
671
        do {
sletz's avatar
sletz committed
672
            // then tell the master we are ready
673
674
            jack_info("Initializing connection with %s...", fParams.fMasterNetName);
            status = SendStartToMaster();
sletz's avatar
sletz committed
675
            if (status == NET_ERROR) {
676
                return false;
sletz's avatar
sletz committed
677
            }
678
        }
679
680
        while (status != NET_ROLLING);

681
682
        return true;
    }
683

Stephane Letz's avatar
Stephane Letz committed
684
    net_status_t JackNetSlaveInterface::SendAvailableToMaster(int try_count)
685
    {
sletz's avatar
sletz committed
686
        jack_log("JackNetSlaveInterface::SendAvailableToMaster()");
sletz's avatar
sletz committed
687
        // utility
688
        session_params_t host_params;
689
690
        int rx_bytes = 0;

sletz's avatar
sletz committed
691
        // socket
sletz's avatar
sletz committed
692
693
        if (fSocket.NewSocket() == SOCKET_ERROR) {
            jack_error("Fatal error : network unreachable - %s", StrError(NET_ERROR_CODE));
694
            return NET_SOCKET_ERROR;
695
696
        }

sletz's avatar
sletz committed
697
698
699
700
701
702
703
704
        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;
            }
705
        }
706

707
708
709
710
        // 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));
        }
711

sletz's avatar
sletz committed
712
        // disable local loop
713
        if (fSocket.SetLocalLoop() == SOCKET_ERROR) {
sletz's avatar
sletz committed
714
            jack_error("Can't disable multicast loop : %s", StrError(NET_ERROR_CODE));
715
        }
716

sletz's avatar
sletz committed
717
        // send 'AVAILABLE' until 'SLAVE_SETUP' received
sletz's avatar
sletz committed
718
        jack_info("Waiting for a master...");
719
        do {
sletz's avatar
sletz committed
720
            // send 'available'
721
            session_params_t net_params;
sletz's avatar
sletz committed
722
            memset(&net_params, 0, sizeof(session_params_t));
723
            SessionParamsHToN(&fParams, &net_params);
sletz's avatar
sletz committed
724
            if (fSocket.SendTo(&net_params, sizeof(session_params_t), 0, fMulticastIP) == SOCKET_ERROR) {
sletz's avatar
sletz committed
725
                jack_error("Error in data send : %s", StrError(NET_ERROR_CODE));
sletz's avatar
sletz committed
726
            }
727

sletz's avatar
sletz committed
728
            // filter incoming packets : don't exit while no error is detected
sletz's avatar
sletz committed
729
730
            memset(&net_params, 0, sizeof(session_params_t));
            rx_bytes = fSocket.CatchHost(&net_params, sizeof(session_params_t), 0);
731
            SessionParamsNToH(&net_params, &host_params);
732
            if ((rx_bytes == SOCKET_ERROR) && (fSocket.GetError() != NET_NO_DATA)) {
sletz's avatar
sletz committed
733
                jack_error("Can't receive : %s", StrError(NET_ERROR_CODE));
734
                return NET_RECV_ERROR;
735
736
            }
        }
sletz's avatar
sletz committed
737
        while (strcmp(host_params.fPacketType, fParams.fPacketType)  && (GetPacketType(&host_params) != SLAVE_SETUP)  && (--try_count > 0));
sletz's avatar
sletz committed
738

739
        // time out failure..
sletz's avatar
sletz committed
740
741
        if (try_count == 0) {
            jack_error("Time out error in connect");
sletz's avatar
sletz committed
742
743
            return NET_CONNECT_ERROR;
        }
744

sletz's avatar
sletz committed
745
        // everything is OK, copy parameters
746
        fParams = host_params;
moret's avatar
moret committed
747

sletz's avatar
sletz committed
748
        // connect the socket
sletz's avatar
sletz committed
749
750
        if (fSocket.Connect() == SOCKET_ERROR) {
            jack_error("Error in connect : %s", StrError(NET_ERROR_CODE));
751
            return NET_CONNECT_ERROR;
752
        }
moret's avatar
moret committed
753
        return NET_CONNECTED;
754
755
    }

moret's avatar
moret committed
756
    net_status_t JackNetSlaveInterface::SendStartToMaster()
757
    {
sletz's avatar
sletz committed
758
        jack_log("JackNetSlaveInterface::SendStartToMaster");
moret's avatar
moret committed
759

sletz's avatar
sletz committed
760
        // tell the master to start
761
        session_params_t net_params;
sletz's avatar
sletz committed
762
763
        memset(&net_params, 0, sizeof(session_params_t));
        SetPacketType(&fParams, START_MASTER);
764
        SessionParamsHToN(&fParams, &net_params);
765
        if (fSocket.Send(&net_params, sizeof(session_params_t), 0) == SOCKET_ERROR) {
sletz's avatar
sletz committed
766
767
            jack_error("Error in send : %s", StrError(NET_ERROR_CODE));
            return (fSocket.GetError() == NET_CONN_ERROR) ? NET_ERROR : NET_SEND_ERROR;
768
        }
769
        return NET_ROLLING;
770
771
    }

sletz's avatar
sletz committed
772
    bool JackNetSlaveInterface::SetParams()
moret's avatar
moret committed
773
    {
sletz's avatar
sletz committed
774
        jack_log("JackNetSlaveInterface::SetParams audio in = %d audio out = %d MIDI in = %d MIDI out = %d",
sletz's avatar
sletz committed
775
776
                fParams.fSendAudioChannels, fParams.fReturnAudioChannels,
                fParams.fSendMidiChannels, fParams.fReturnMidiChannels);