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  • Committer: Package Import Robot
  • Author(s): Felipe Sateler
  • Date: 2013-09-21 19:05:02 UTC
  • Revision ID: package-import@ubuntu.com-20130921190502-8gsftrku6jnzhd7v
Tags: upstream-3.4~dfsg
Import upstream version 3.4~dfsg

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gtk2_ardour/video_monitor.cc
 
1
/*
 
2
    Copyright (C) 2010 Paul Davis
 
3
    Author: Robin Gareus <robin@gareus.org>
 
4
 
 
5
    This program is free software; you can redistribute it and/or modify
 
6
    it under the terms of the GNU General Public License as published by
 
7
    the Free Software Foundation; either version 2 of the License, or
 
8
    (at your option) any later version.
 
9
 
 
10
    This program is distributed in the hope that it will be useful,
 
11
    but WITHOUT ANY WARRANTY; without even the implied warranty of
 
12
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
13
    GNU General Public License for more details.
 
14
 
 
15
    You should have received a copy of the GNU General Public License
 
16
    along with this program; if not, write to the Free Software
 
17
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
18
 
 
19
*/
 
20
#include "pbd/file_utils.h"
 
21
#include "pbd/convert.h"
 
22
#include "gui_thread.h"
 
23
#include "ardour_ui.h"
 
24
#include "utils.h"
 
25
 
 
26
#include <stdio.h>
 
27
#include "public_editor.h"
 
28
#include "editor.h"
 
29
#include "video_monitor.h"
 
30
 
 
31
#include "i18n.h"
 
32
 
 
33
using namespace std;
 
34
using namespace PBD;
 
35
 
 
36
VideoMonitor::VideoMonitor (PublicEditor *ed, std::string xjadeo_bin_path)
 
37
        : editor (ed)
 
38
{
 
39
        manually_seeked_frame = 0;
 
40
        fps =0.0; // = _session->timecode_frames_per_second();
 
41
        sync_by_manual_seek = false;
 
42
        _restore_settings_mask = 0;
 
43
        clock_connection = sigc::connection();
 
44
        state_connection = sigc::connection();
 
45
        debug_enable = false;
 
46
        state_clk_divide = 0;
 
47
        starting = 0;
 
48
        osdmode = 10; // 1: frameno, 2: timecode, 8: box
 
49
 
 
50
        process = new SystemExec(xjadeo_bin_path, X_("-R"));
 
51
        process->ReadStdout.connect_same_thread (*this, boost::bind (&VideoMonitor::parse_output, this, _1 ,_2));
 
52
        process->Terminated.connect (*this, invalidator (*this), boost::bind (&VideoMonitor::terminated, this), gui_context());
 
53
        XJKeyEvent.connect (*this, invalidator (*this), boost::bind (&VideoMonitor::forward_keyevent, this, _1), gui_context());
 
54
}
 
55
 
 
56
VideoMonitor::~VideoMonitor ()
 
57
{
 
58
        if (clock_connection.connected()) {
 
59
                clock_connection.disconnect();
 
60
        }
 
61
        if (state_connection.connected()) {
 
62
                state_connection.disconnect();
 
63
        }
 
64
        delete process;
 
65
}
 
66
 
 
67
bool
 
68
VideoMonitor::start ()
 
69
{
 
70
        if (is_started()) {
 
71
                return true;
 
72
        }
 
73
 
 
74
        manually_seeked_frame = 0;
 
75
        sync_by_manual_seek = false;
 
76
        if (clock_connection.connected()) { clock_connection.disconnect(); }
 
77
 
 
78
        if (process->start(debug_enable?2:1)) {
 
79
                return false;
 
80
        }
 
81
        return true;
 
82
}
 
83
 
 
84
void
 
85
VideoMonitor::query_full_state (bool wait)
 
86
{
 
87
        knownstate = 0;
 
88
        process->write_to_stdin("get windowsize\n");
 
89
        process->write_to_stdin("get windowpos\n");
 
90
        process->write_to_stdin("get letterbox\n");
 
91
        process->write_to_stdin("get fullscreen\n");
 
92
        process->write_to_stdin("get ontop\n");
 
93
        process->write_to_stdin("get offset\n");
 
94
        process->write_to_stdin("get osdcfg\n");
 
95
        int timeout = 40;
 
96
        if (wait && knownstate !=127 && --timeout) {
 
97
                usleep(50000);
 
98
                sched_yield();
 
99
        }
 
100
}
 
101
 
 
102
void
 
103
VideoMonitor::quit ()
 
104
{
 
105
        if (!is_started()) return;
 
106
        if (state_connection.connected()) { state_connection.disconnect(); }
 
107
        if (clock_connection.connected()) { clock_connection.disconnect(); }
 
108
        query_full_state(true);
 
109
        process->write_to_stdin("quit\n");
 
110
        /* the 'quit' command should result in process termination
 
111
         * but in case it fails (communication failure, SIGSTOP, ??)
 
112
         * here's a timeout..
 
113
         */
 
114
        int timeout = 40;
 
115
        while (is_started() && --timeout) {
 
116
                usleep(50000);
 
117
                sched_yield();
 
118
        }
 
119
        if (timeout <= 0) {
 
120
                process->terminate();
 
121
        }
 
122
}
 
123
 
 
124
void
 
125
VideoMonitor::open (std::string filename)
 
126
{
 
127
        if (!is_started()) return;
 
128
        manually_seeked_frame = 0;
 
129
        osdmode = 10; // 1: frameno, 2: timecode, 8: box
 
130
        sync_by_manual_seek = false;
 
131
        starting = 15;
 
132
        process->write_to_stdin("load " + filename + "\n");
 
133
        process->write_to_stdin("set fps -1\n");
 
134
        process->write_to_stdin("window resize 100%\n");
 
135
        process->write_to_stdin("window ontop on\n");
 
136
        process->write_to_stdin("set seekmode 1\n");
 
137
        /* override bitwise flags -- see xjadeo.h
 
138
         * 0x01 : ignore 'q', ESC  / quite
 
139
         * 0x02 : ignore "window closed by WM" / quit
 
140
         * 0x04 : (osx only) menu-exit / quit
 
141
         * 0x08 : ignore mouse-button 1 -- resize
 
142
         * 0x10 : no A/V offset
 
143
         * 0x20 : don't use jack-session
 
144
         * 0x40 : no jack-transport control play/pause/rewind
 
145
         */
 
146
        process->write_to_stdin("set override 120\n");
 
147
        process->write_to_stdin("notify keyboard\n");
 
148
        process->write_to_stdin("notify settings\n");
 
149
        process->write_to_stdin("window letterbox on\n");
 
150
        process->write_to_stdin("osd mode 10\n");
 
151
        for(XJSettings::const_iterator it = xjadeo_settings.begin(); it != xjadeo_settings.end(); ++it) {
 
152
                if (skip_setting(it->first)) { continue; }
 
153
                process->write_to_stdin(it->first + " " + it->second + "\n");
 
154
        }
 
155
        if (!state_connection.connected()) {
 
156
                starting = 15;
 
157
                querystate();
 
158
                state_clk_divide = 0;
 
159
                /* TODO once every two second or so -- state_clk_divide hack below */
 
160
                state_connection = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &VideoMonitor::querystate));
 
161
        }
 
162
        xjadeo_sync_setup();
 
163
}
 
164
 
 
165
void
 
166
VideoMonitor::querystate ()
 
167
{
 
168
        /* clock-divider hack -- RapidScreenUpdate == every_point_one_seconds */
 
169
        state_clk_divide = (state_clk_divide + 1) % 300; // 30 secs
 
170
        if (state_clk_divide == 0) {
 
171
                // every 30 seconds
 
172
                query_full_state(false);
 
173
                return;
 
174
        }
 
175
        if (state_clk_divide%25 != 0) {
 
176
                return;
 
177
        }
 
178
        // every 2.5 seconds:
 
179
        process->write_to_stdin("get fullscreen\n");
 
180
        process->write_to_stdin("get ontop\n");
 
181
        process->write_to_stdin("get osdcfg\n");
 
182
        process->write_to_stdin("get letterbox\n");
 
183
}
 
184
 
 
185
bool
 
186
VideoMonitor::skip_setting (std::string which)
 
187
{
 
188
        if (_restore_settings_mask & XJ_OSD && which == "osd mode") { return true; }
 
189
        if (_restore_settings_mask & XJ_LETTERBOX && which == "window letterbox") { return true; }
 
190
        if (_restore_settings_mask & XJ_WINDOW_SIZE && which == "window size") { return true; }
 
191
        if (_restore_settings_mask & XJ_WINDOW_POS && which == "window xy") { return true; }
 
192
        if (_restore_settings_mask & XJ_WINDOW_ONTOP && which == "window ontop") { return true; }
 
193
        if (_restore_settings_mask & XJ_LETTERBOX && which == "window letterbox") { return true; }
 
194
        if (_restore_settings_mask & XJ_OFFSET && which == "set offset") { return true; }
 
195
        if (_restore_settings_mask & XJ_FULLSCREEN && which == "window zoom") { return true; }
 
196
        return false;
 
197
}
 
198
 
 
199
void
 
200
VideoMonitor::send_cmd (int what, int param)
 
201
{
 
202
        bool osd_update = false;
 
203
        int prev_osdmode = osdmode;
 
204
        if (!is_started()) return;
 
205
        switch (what) {
 
206
                case 1:
 
207
                        if (param) process->write_to_stdin("window ontop on\n");
 
208
                        else process->write_to_stdin("window ontop off\n");
 
209
                        break;
 
210
                case 2:
 
211
                        if (param) osdmode |= 2;
 
212
                        else osdmode &= ~2;
 
213
                        osd_update = (prev_osdmode != osdmode);
 
214
                        break;
 
215
                case 3:
 
216
                        if (param) osdmode |= 1;
 
217
                        else osdmode &= ~1;
 
218
                        osd_update = (prev_osdmode != osdmode);
 
219
                        break;
 
220
                case 4:
 
221
                        if (param) osdmode |= 8;
 
222
                        else osdmode &= ~8;
 
223
                        osd_update = (prev_osdmode != osdmode);
 
224
                        break;
 
225
                case 5:
 
226
                        if (param) process->write_to_stdin("window zoom on\n");
 
227
                        else process->write_to_stdin("window zoom off\n");
 
228
                        break;
 
229
                case 6:
 
230
                        if (param) process->write_to_stdin("window letterbox on\n");
 
231
                        else process->write_to_stdin("window letterbox off\n");
 
232
                        break;
 
233
                case 7:
 
234
                        process->write_to_stdin("window resize 100%");
 
235
                        break;
 
236
                default:
 
237
                        break;
 
238
        }
 
239
        if (osd_update) {
 
240
                std::ostringstream osstream; osstream << "osd mode " << osdmode << "\n";
 
241
                process->write_to_stdin(osstream.str());
 
242
        }
 
243
}
 
244
 
 
245
bool
 
246
VideoMonitor::is_started ()
 
247
{
 
248
        return process->is_running();
 
249
}
 
250
 
 
251
void
 
252
VideoMonitor::forward_keyevent (unsigned int keyval)
 
253
{
 
254
        Editor* ed = dynamic_cast<Editor*>(&PublicEditor::instance());
 
255
        if (!ed) return;
 
256
        emulate_key_event(ed, keyval);
 
257
}
 
258
 
 
259
void
 
260
VideoMonitor::parse_output (std::string d, size_t /*s*/)
 
261
{
 
262
        std::string line = d;
 
263
        std::string::size_type start = 0;
 
264
        std::string::size_type end = 0;
 
265
 
 
266
        while (1) {
 
267
                end = d.find('\n', start);
 
268
                if (end == std::string::npos) break;
 
269
                line = d.substr(start,end-start);
 
270
                start=end+1;
 
271
                if (line.length() <4 || line.at(0)!='@') continue;
 
272
#if 1 /* DEBUG */
 
273
                if (debug_enable) {
 
274
                        printf("xjadeo: '%s'\n", line.c_str());
 
275
                }
 
276
#endif
 
277
                int status = atoi(line.substr(1,3));
 
278
                switch(status / 100) {
 
279
                        case 4: /* errors */
 
280
                                if (status == 403) {
 
281
                                        PBD::warning << _("Video Monitor: File Not Found.") << endmsg;
 
282
                                        /* check: we should only write from the main thread.
 
283
                                         * However it should not matter for 'quit'.
 
284
                                         */
 
285
                                        process->write_to_stdin("quit\n");
 
286
                                }
 
287
#ifdef DEBUG_XJCOM
 
288
                        else
 
289
                                printf("xjadeo: error '%s'\n", line.c_str());
 
290
#endif
 
291
                        break;
 
292
                        case 3: /* async notifications */
 
293
                        {
 
294
                                std::string::size_type equalsign = line.find('=');
 
295
                                std::string::size_type comment = line.find('#');
 
296
                                if (comment != std::string::npos) { line = line.substr(0,comment); }
 
297
                                if (equalsign != std::string::npos) {
 
298
                                        std::string key = line.substr(5, equalsign - 5);
 
299
                                        std::string value = line.substr(equalsign + 1);
 
300
 
 
301
                                        if (status == 310 && key=="keypress") {
 
302
                                                /* keyboard event */
 
303
                                                XJKeyEvent((unsigned int)atoi(value));
 
304
                                        }
 
305
#ifdef DEBUG_XJCOM
 
306
                                        else {
 
307
                                                std::string msg = line.substr(5);
 
308
                                                printf("xjadeo: async '%s' -> '%s'\n", key, value);
 
309
                                        }
 
310
#endif
 
311
                                }
 
312
#ifdef DEBUG_XJCOM
 
313
                                else {
 
314
                                        std::string msg = line.substr(5);
 
315
                                        printf("xjadeo: async '%s'\n", msg.c_str());
 
316
                                }
 
317
#endif
 
318
                        } break;
 
319
                        case 1: /* text messages - command reply */
 
320
                                break;
 
321
                        case 8: /* comments / info for humans */
 
322
                                break;
 
323
                        case 2:
 
324
/* replies:
 
325
 * 201: var=<int>
 
326
 * 202: var=<double>
 
327
 * 210: var=<int>x<int>
 
328
 * 220: var=<string>
 
329
 * 228: var=<smpte-string>
 
330
 */
 
331
                        {
 
332
                                std::string::size_type equalsign = line.find('=');
 
333
                                std::string::size_type comment = line.find('#');
 
334
                                if (comment != std::string::npos) { line = line.substr(0,comment); }
 
335
                                if (equalsign != std::string::npos) {
 
336
                                        std::string key = line.substr(5, equalsign - 5);
 
337
                                        std::string value = line.substr(equalsign + 1);
 
338
#if 0 /* DEBUG */
 
339
                                        std::cout << "parsed: " << key << " => " << value << std::endl;
 
340
#endif
 
341
                                        if       (key ==  "windowpos") {
 
342
                                                knownstate |= 16;
 
343
                                                if (xjadeo_settings["window xy"] != value) {
 
344
                                                        if (!starting && _session) _session->set_dirty ();
 
345
                                                }
 
346
                                                xjadeo_settings["window xy"] = value;
 
347
                                        } else if(key ==  "windowsize") {
 
348
                                                knownstate |= 32;
 
349
                                                if (xjadeo_settings["window size"] != value) {
 
350
                                                        if (!starting && _session) _session->set_dirty ();
 
351
                                                }
 
352
                                                xjadeo_settings["window size"] = value;
 
353
                                        } else if(key ==  "windowontop") {
 
354
                                                knownstate |= 2;
 
355
                                                if (starting || xjadeo_settings["window ontop"] != value) {
 
356
                                                        if (!starting && _session) _session->set_dirty ();
 
357
                                                        if (atoi(value)) { UiState("xjadeo-window-ontop-on"); }
 
358
                                                        else { UiState("xjadeo-window-ontop-off"); }
 
359
                                                        starting &= ~2;
 
360
                                                }
 
361
                                                xjadeo_settings["window ontop"] = value;
 
362
                                        } else if(key ==  "fullscreen") {
 
363
                                                knownstate |= 4;
 
364
                                                if (starting || xjadeo_settings["window zoom"] != value) {
 
365
                                                        if (!starting && _session) _session->set_dirty ();
 
366
                                                        if (atoi(value)) { UiState("xjadeo-window-fullscreen-on"); }
 
367
                                                        else { UiState("xjadeo-window-fullscreen-off"); }
 
368
                                                        starting &= ~4;
 
369
                                                }
 
370
                                                xjadeo_settings["window zoom"] = value;
 
371
                                        } else if(key ==  "letterbox") {
 
372
                                                knownstate |= 8;
 
373
                                                if (starting || xjadeo_settings["window letterbox"] != value) {
 
374
                                                        if (!starting && _session) _session->set_dirty ();
 
375
                                                        if (atoi(value)) { UiState("xjadeo-window-letterbox-on"); }
 
376
                                                        else { UiState("xjadeo-window-letterbox-off"); }
 
377
                                                        starting &= ~8;
 
378
                                                }
 
379
                                                xjadeo_settings["window letterbox"] = value;
 
380
                                        } else if(key ==  "osdmode") {
 
381
                                                knownstate |= 1;
 
382
                                                osdmode = atoi(value);
 
383
                                                if (starting || atoi(xjadeo_settings["osd mode"]) != osdmode) {
 
384
                                                        if (!starting && _session) _session->set_dirty ();
 
385
                                                        if ((osdmode & 1) == 1) { UiState("xjadeo-window-osd-frame-on"); }
 
386
                                                        if ((osdmode & 1) == 0) { UiState("xjadeo-window-osd-frame-off"); }
 
387
                                                        if ((osdmode & 2) == 2) { UiState("xjadeo-window-osd-timecode-on"); }
 
388
                                                        if ((osdmode & 2) == 0) { UiState("xjadeo-window-osd-timecode-off"); }
 
389
                                                        if ((osdmode & 8) == 8) { UiState("xjadeo-window-osd-box-on"); }
 
390
                                                        if ((osdmode & 8) == 0) { UiState("xjadeo-window-osd-box-off"); }
 
391
                                                }
 
392
                                                starting &= ~1;
 
393
                                                xjadeo_settings["osd mode"] = value;
 
394
                                        } else if(key ==  "offset") {
 
395
                                                knownstate |= 64;
 
396
                                                if (xjadeo_settings["set offset"] != value) {
 
397
                                                        if (!starting && _session) _session->set_dirty ();
 
398
                                                }
 
399
                                                xjadeo_settings["set offset"] = value;
 
400
#ifdef DEBUG_XJCOM
 
401
                                        } else {
 
402
                                                printf("xjadeo: '%s' -> '%s'\n", key.c_str(), value.c_str());
 
403
#endif
 
404
                                        }
 
405
                                }
 
406
                        }
 
407
                                break;
 
408
                        default:
 
409
                                break;
 
410
                }
 
411
        }
 
412
}
 
413
 
 
414
void
 
415
VideoMonitor::terminated ()
 
416
{
 
417
        process->terminate(); // from gui-context clean up
 
418
        Terminated();
 
419
}
 
420
 
 
421
void
 
422
VideoMonitor::save_session ()
 
423
{
 
424
        if (!_session) { return; }
 
425
        XMLNode* node = _session->extra_xml (X_("XJSettings"), true);
 
426
        if (!node) return;
 
427
        node->remove_nodes_and_delete("XJSetting");
 
428
 
 
429
        for(XJSettings::const_iterator it = xjadeo_settings.begin(); it != xjadeo_settings.end(); ++it) {
 
430
          XMLNode* child = node->add_child (X_("XJSetting"));
 
431
                child->add_property (X_("k"), it->first);
 
432
                child->add_property (X_("v"), it->second);
 
433
        }
 
434
}
 
435
 
 
436
 
 
437
void
 
438
VideoMonitor::set_session (ARDOUR::Session *s)
 
439
{
 
440
        SessionHandlePtr::set_session (s);
 
441
        if (!_session) { return; }
 
442
        _session->config.ParameterChanged.connect (*this, invalidator (*this), ui_bind (&VideoMonitor::parameter_changed, this, _1), gui_context());
 
443
        XMLNode* node = _session->extra_xml (X_("XJSettings"));
 
444
        if (!node) { return;}
 
445
        xjadeo_settings.clear();
 
446
 
 
447
        XMLNodeList nlist = node->children();
 
448
        XMLNodeConstIterator niter;
 
449
        for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
 
450
                xjadeo_settings[(*niter)->property(X_("k"))->value()] = (*niter)->property(X_("v"))->value();
 
451
  }
 
452
}
 
453
 
 
454
bool
 
455
VideoMonitor::set_custom_setting (const std::string k, const std::string v)
 
456
{
 
457
        xjadeo_settings[k] = v;
 
458
        return true; /* TODO: check if key is valid */
 
459
}
 
460
 
 
461
const std::string
 
462
VideoMonitor::get_custom_setting (const std::string k)
 
463
{
 
464
        return (xjadeo_settings[k]);
 
465
}
 
466
 
 
467
#define NO_OFFSET (1<<31) //< skip setting or modifying offset --  TODO check ARDOUR::frameoffset_t max value.
 
468
void
 
469
VideoMonitor::srsupdate ()
 
470
{
 
471
        if (!_session) { return; }
 
472
        if (editor->dragging_playhead()) { return ;}
 
473
        manual_seek(_session->audible_frame(), false, NO_OFFSET);
 
474
}
 
475
 
 
476
void
 
477
VideoMonitor::set_offset (ARDOUR::frameoffset_t offset)
 
478
{
 
479
        if (!is_started()) { return; }
 
480
        if (!_session) { return; }
 
481
        if (offset == NO_OFFSET ) { return; }
 
482
 
 
483
        framecnt_t video_frame_offset;
 
484
        framecnt_t audio_frame_rate;
 
485
        if (_session->config.get_videotimeline_pullup()) {
 
486
                audio_frame_rate = _session->frame_rate();
 
487
        } else {
 
488
                audio_frame_rate = _session->nominal_frame_rate();
 
489
        }
 
490
 
 
491
        /* Note: pull-up/down are applied here: frame_rate() vs. nominal_frame_rate() */
 
492
        if (_session->config.get_use_video_file_fps()) {
 
493
                video_frame_offset = floor(offset * fps / audio_frame_rate);
 
494
        } else {
 
495
                video_frame_offset = floor(offset * _session->timecode_frames_per_second() / audio_frame_rate);
 
496
        }
 
497
 
 
498
        if (video_offset == video_frame_offset) { return; }
 
499
        video_offset = video_frame_offset;
 
500
 
 
501
        std::ostringstream osstream1; osstream1 << -1 * video_frame_offset;
 
502
        process->write_to_stdin("set offset " + osstream1.str() + "\n");
 
503
}
 
504
 
 
505
void
 
506
VideoMonitor::manual_seek (framepos_t when, bool /*force*/, ARDOUR::frameoffset_t offset)
 
507
{
 
508
        if (!is_started()) { return; }
 
509
        if (!_session) { return; }
 
510
        framecnt_t video_frame;
 
511
        framecnt_t audio_frame_rate;
 
512
        if (_session->config.get_videotimeline_pullup()) {
 
513
                audio_frame_rate = _session->frame_rate();
 
514
        } else {
 
515
                audio_frame_rate = _session->nominal_frame_rate();
 
516
        }
 
517
 
 
518
        /* Note: pull-up/down are applied here: frame_rate() vs. nominal_frame_rate() */
 
519
        if (_session->config.get_use_video_file_fps()) {
 
520
                video_frame = floor(when * fps / audio_frame_rate);
 
521
        } else {
 
522
                video_frame = floor(when * _session->timecode_frames_per_second() / audio_frame_rate);
 
523
        }
 
524
        if (video_frame < 0 ) video_frame = 0;
 
525
 
 
526
        if (video_frame == manually_seeked_frame) { return; }
 
527
        manually_seeked_frame = video_frame;
 
528
 
 
529
#if 0 /* DEBUG */
 
530
        std::cout <<"seek: " << video_frame << std::endl;
 
531
#endif
 
532
        std::ostringstream osstream; osstream << video_frame;
 
533
        process->write_to_stdin("seek " + osstream.str() + "\n");
 
534
 
 
535
        set_offset(offset);
 
536
}
 
537
 
 
538
void
 
539
VideoMonitor::parameter_changed (std::string const & p)
 
540
{
 
541
        if (!is_started()) { return; }
 
542
        if (!_session) { return; }
 
543
        if (p != "external-sync" && p != "sync-source") {
 
544
                return;
 
545
        }
 
546
        xjadeo_sync_setup();
 
547
}
 
548
 
 
549
void
 
550
VideoMonitor::xjadeo_sync_setup ()
 
551
{
 
552
        if (!is_started()) { return; }
 
553
        if (!_session) { return; }
 
554
 
 
555
        bool my_manual_seek = true;
 
556
        if (_session->config.get_external_sync()) {
 
557
                if (ARDOUR::Config->get_sync_source() == ARDOUR::JACK)
 
558
                        my_manual_seek = false;
 
559
        }
 
560
 
 
561
        if (my_manual_seek != sync_by_manual_seek) {
 
562
                if (sync_by_manual_seek) {
 
563
                        if (clock_connection.connected()) {
 
564
                                clock_connection.disconnect();
 
565
                        }
 
566
                        process->write_to_stdin("jack connect\n");
 
567
                } else {
 
568
                        process->write_to_stdin("jack disconnect\n");
 
569
                        clock_connection = ARDOUR_UI::SuperRapidScreenUpdate.connect (sigc::mem_fun (*this, &VideoMonitor::srsupdate));
 
570
                }
 
571
                sync_by_manual_seek = my_manual_seek;
 
572
        }
 
573
}