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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2012-14 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #ifdef ENABLE_DECODE | |
22 | #include <libsigrokdecode/libsigrokdecode.h> | |
23 | #endif | |
24 | ||
25 | #include "sigsession.h" | |
26 | ||
27 | #include "devicemanager.h" | |
28 | #include "devinst.h" | |
29 | ||
30 | #include "data/analog.h" | |
31 | #include "data/analogsnapshot.h" | |
32 | #include "data/decoderstack.h" | |
33 | #include "data/logic.h" | |
34 | #include "data/logicsnapshot.h" | |
35 | #include "data/decode/decoder.h" | |
36 | ||
37 | #include "view/analogsignal.h" | |
38 | #include "view/decodetrace.h" | |
39 | #include "view/logicsignal.h" | |
40 | ||
41 | #include <assert.h> | |
42 | ||
43 | #include <stdexcept> | |
44 | ||
45 | #include <boost/foreach.hpp> | |
46 | ||
47 | #include <sys/stat.h> | |
48 | ||
49 | #include <QDebug> | |
50 | ||
51 | using boost::dynamic_pointer_cast; | |
52 | using boost::function; | |
53 | using boost::lock_guard; | |
54 | using boost::mutex; | |
55 | using boost::shared_ptr; | |
56 | using std::map; | |
57 | using std::set; | |
58 | using std::string; | |
59 | using std::vector; | |
60 | ||
61 | namespace pv { | |
62 | ||
63 | // TODO: This should not be necessary | |
64 | SigSession* SigSession::_session = NULL; | |
65 | ||
66 | SigSession::SigSession(DeviceManager &device_manager) : | |
67 | _device_manager(device_manager), | |
68 | _capture_state(Stopped) | |
69 | { | |
70 | // TODO: This should not be necessary | |
71 | _session = this; | |
72 | } | |
73 | ||
74 | SigSession::~SigSession() | |
75 | { | |
76 | stop_capture(); | |
77 | ||
78 | _sampling_thread.join(); | |
79 | ||
80 | if (_dev_inst) | |
81 | _device_manager.release_device(_dev_inst); | |
82 | ||
83 | // TODO: This should not be necessary | |
84 | _session = NULL; | |
85 | } | |
86 | ||
87 | shared_ptr<DevInst> SigSession::get_device() const | |
88 | { | |
89 | return _dev_inst; | |
90 | } | |
91 | ||
92 | void SigSession::set_device(shared_ptr<DevInst> dev_inst) | |
93 | { | |
94 | // Ensure we are not capturing before setting the device | |
95 | stop_capture(); | |
96 | ||
97 | if (_dev_inst) | |
98 | _device_manager.release_device(_dev_inst); | |
99 | if (dev_inst) | |
100 | _device_manager.use_device(dev_inst, this); | |
101 | _dev_inst = dev_inst; | |
102 | update_signals(dev_inst); | |
103 | } | |
104 | ||
105 | void SigSession::release_device(shared_ptr<DevInst> dev_inst) | |
106 | { | |
107 | (void)dev_inst; | |
108 | ||
109 | assert(_capture_state == Stopped); | |
110 | _dev_inst = shared_ptr<DevInst>(); | |
111 | } | |
112 | ||
113 | void SigSession::load_file(const string &name, | |
114 | function<void (const QString)> error_handler) | |
115 | { | |
116 | stop_capture(); | |
117 | ||
118 | if (sr_session_load(name.c_str()) == SR_OK) { | |
119 | GSList *devlist = NULL; | |
120 | sr_session_dev_list(&devlist); | |
121 | ||
122 | if (!devlist || !devlist->data || | |
123 | sr_session_start() != SR_OK) { | |
124 | error_handler(tr("Failed to start session.")); | |
125 | return; | |
126 | } | |
127 | ||
128 | shared_ptr<DevInst> dev_inst( | |
129 | new DevInst((sr_dev_inst*)devlist->data)); | |
130 | g_slist_free(devlist); | |
131 | ||
132 | _decode_traces.clear(); | |
133 | update_signals(dev_inst); | |
134 | read_sample_rate(dev_inst->dev_inst()); | |
135 | ||
136 | _sampling_thread = boost::thread( | |
137 | &SigSession::load_session_thread_proc, this, | |
138 | error_handler); | |
139 | ||
140 | } else { | |
141 | sr_input *in = NULL; | |
142 | ||
143 | if (!(in = load_input_file_format(name.c_str(), | |
144 | error_handler))) | |
145 | return; | |
146 | ||
147 | _decode_traces.clear(); | |
148 | update_signals(shared_ptr<DevInst>(new DevInst(in->sdi))); | |
149 | read_sample_rate(in->sdi); | |
150 | ||
151 | _sampling_thread = boost::thread( | |
152 | &SigSession::load_input_thread_proc, this, | |
153 | name, in, error_handler); | |
154 | } | |
155 | } | |
156 | ||
157 | SigSession::capture_state SigSession::get_capture_state() const | |
158 | { | |
159 | lock_guard<mutex> lock(_sampling_mutex); | |
160 | return _capture_state; | |
161 | } | |
162 | ||
163 | void SigSession::start_capture(function<void (const QString)> error_handler) | |
164 | { | |
165 | stop_capture(); | |
166 | ||
167 | // Check that a device instance has been selected. | |
168 | if (!_dev_inst) { | |
169 | qDebug() << "No device selected"; | |
170 | return; | |
171 | } | |
172 | ||
173 | assert(_dev_inst->dev_inst()); | |
174 | ||
175 | // Check that at least one probe is enabled | |
176 | const GSList *l; | |
177 | for (l = _dev_inst->dev_inst()->probes; l; l = l->next) { | |
178 | sr_probe *const probe = (sr_probe*)l->data; | |
179 | assert(probe); | |
180 | if (probe->enabled) | |
181 | break; | |
182 | } | |
183 | ||
184 | if (!l) { | |
185 | error_handler(tr("No probes enabled.")); | |
186 | return; | |
187 | } | |
188 | ||
189 | // Begin the session | |
190 | _sampling_thread = boost::thread( | |
191 | &SigSession::sample_thread_proc, this, _dev_inst, | |
192 | error_handler); | |
193 | } | |
194 | ||
195 | void SigSession::stop_capture() | |
196 | { | |
197 | if (get_capture_state() == Stopped) | |
198 | return; | |
199 | ||
200 | sr_session_stop(); | |
201 | ||
202 | // Check that sampling stopped | |
203 | _sampling_thread.join(); | |
204 | } | |
205 | ||
206 | set< shared_ptr<data::SignalData> > SigSession::get_data() const | |
207 | { | |
208 | lock_guard<mutex> lock(_signals_mutex); | |
209 | set< shared_ptr<data::SignalData> > data; | |
210 | BOOST_FOREACH(const shared_ptr<view::Signal> sig, _signals) { | |
211 | assert(sig); | |
212 | data.insert(sig->data()); | |
213 | } | |
214 | ||
215 | return data; | |
216 | } | |
217 | ||
218 | vector< shared_ptr<view::Signal> > SigSession::get_signals() const | |
219 | { | |
220 | lock_guard<mutex> lock(_signals_mutex); | |
221 | return _signals; | |
222 | } | |
223 | ||
224 | #ifdef ENABLE_DECODE | |
225 | bool SigSession::add_decoder(srd_decoder *const dec) | |
226 | { | |
227 | map<const srd_probe*, shared_ptr<view::LogicSignal> > probes; | |
228 | shared_ptr<data::DecoderStack> decoder_stack; | |
229 | ||
230 | try | |
231 | { | |
232 | lock_guard<mutex> lock(_signals_mutex); | |
233 | ||
234 | // Create the decoder | |
235 | decoder_stack = shared_ptr<data::DecoderStack>( | |
236 | new data::DecoderStack(dec)); | |
237 | ||
238 | // Make a list of all the probes | |
239 | std::vector<const srd_probe*> all_probes; | |
240 | for(const GSList *i = dec->probes; i; i = i->next) | |
241 | all_probes.push_back((const srd_probe*)i->data); | |
242 | for(const GSList *i = dec->opt_probes; i; i = i->next) | |
243 | all_probes.push_back((const srd_probe*)i->data); | |
244 | ||
245 | // Auto select the initial probes | |
246 | BOOST_FOREACH(const srd_probe *probe, all_probes) | |
247 | BOOST_FOREACH(shared_ptr<view::Signal> s, _signals) | |
248 | { | |
249 | shared_ptr<view::LogicSignal> l = | |
250 | dynamic_pointer_cast<view::LogicSignal>(s); | |
251 | if (l && QString::fromUtf8(probe->name). | |
252 | toLower().contains( | |
253 | l->get_name().toLower())) | |
254 | probes[probe] = l; | |
255 | } | |
256 | ||
257 | assert(decoder_stack); | |
258 | assert(!decoder_stack->stack().empty()); | |
259 | assert(decoder_stack->stack().front()); | |
260 | decoder_stack->stack().front()->set_probes(probes); | |
261 | ||
262 | // Create the decode signal | |
263 | shared_ptr<view::DecodeTrace> d( | |
264 | new view::DecodeTrace(*this, decoder_stack, | |
265 | _decode_traces.size())); | |
266 | _decode_traces.push_back(d); | |
267 | } | |
268 | catch(std::runtime_error e) | |
269 | { | |
270 | return false; | |
271 | } | |
272 | ||
273 | signals_changed(); | |
274 | ||
275 | // Do an initial decode | |
276 | decoder_stack->begin_decode(); | |
277 | ||
278 | return true; | |
279 | } | |
280 | ||
281 | vector< shared_ptr<view::DecodeTrace> > SigSession::get_decode_signals() const | |
282 | { | |
283 | lock_guard<mutex> lock(_signals_mutex); | |
284 | return _decode_traces; | |
285 | } | |
286 | ||
287 | void SigSession::remove_decode_signal(view::DecodeTrace *signal) | |
288 | { | |
289 | for (vector< shared_ptr<view::DecodeTrace> >::iterator i = | |
290 | _decode_traces.begin(); | |
291 | i != _decode_traces.end(); | |
292 | i++) | |
293 | if ((*i).get() == signal) | |
294 | { | |
295 | _decode_traces.erase(i); | |
296 | signals_changed(); | |
297 | return; | |
298 | } | |
299 | } | |
300 | #endif | |
301 | ||
302 | void SigSession::set_capture_state(capture_state state) | |
303 | { | |
304 | lock_guard<mutex> lock(_sampling_mutex); | |
305 | const bool changed = _capture_state != state; | |
306 | _capture_state = state; | |
307 | if(changed) | |
308 | capture_state_changed(state); | |
309 | } | |
310 | ||
311 | /** | |
312 | * Attempts to autodetect the format. Failing that | |
313 | * @param filename The filename of the input file. | |
314 | * @return A pointer to the 'struct sr_input_format' that should be used, | |
315 | * or NULL if no input format was selected or auto-detected. | |
316 | */ | |
317 | sr_input_format* SigSession::determine_input_file_format( | |
318 | const string &filename) | |
319 | { | |
320 | int i; | |
321 | ||
322 | /* If there are no input formats, return NULL right away. */ | |
323 | sr_input_format *const *const inputs = sr_input_list(); | |
324 | if (!inputs) { | |
325 | g_critical("No supported input formats available."); | |
326 | return NULL; | |
327 | } | |
328 | ||
329 | /* Otherwise, try to find an input module that can handle this file. */ | |
330 | for (i = 0; inputs[i]; i++) { | |
331 | if (inputs[i]->format_match(filename.c_str())) | |
332 | break; | |
333 | } | |
334 | ||
335 | /* Return NULL if no input module wanted to touch this. */ | |
336 | if (!inputs[i]) { | |
337 | g_critical("Error: no matching input module found."); | |
338 | return NULL; | |
339 | } | |
340 | ||
341 | return inputs[i]; | |
342 | } | |
343 | ||
344 | sr_input* SigSession::load_input_file_format(const string &filename, | |
345 | function<void (const QString)> error_handler, | |
346 | sr_input_format *format) | |
347 | { | |
348 | struct stat st; | |
349 | sr_input *in; | |
350 | ||
351 | if (!format && !(format = | |
352 | determine_input_file_format(filename.c_str()))) { | |
353 | /* The exact cause was already logged. */ | |
354 | return NULL; | |
355 | } | |
356 | ||
357 | if (stat(filename.c_str(), &st) == -1) { | |
358 | error_handler(tr("Failed to load file")); | |
359 | return NULL; | |
360 | } | |
361 | ||
362 | /* Initialize the input module. */ | |
363 | if (!(in = new sr_input)) { | |
364 | qDebug("Failed to allocate input module.\n"); | |
365 | return NULL; | |
366 | } | |
367 | ||
368 | in->format = format; | |
369 | in->param = NULL; | |
370 | if (in->format->init && | |
371 | in->format->init(in, filename.c_str()) != SR_OK) { | |
372 | qDebug("Input format init failed.\n"); | |
373 | return NULL; | |
374 | } | |
375 | ||
376 | sr_session_new(); | |
377 | ||
378 | if (sr_session_dev_add(in->sdi) != SR_OK) { | |
379 | qDebug("Failed to use device.\n"); | |
380 | sr_session_destroy(); | |
381 | return NULL; | |
382 | } | |
383 | ||
384 | return in; | |
385 | } | |
386 | ||
387 | void SigSession::update_signals(shared_ptr<DevInst> dev_inst) | |
388 | { | |
389 | assert(dev_inst); | |
390 | assert(_capture_state == Stopped); | |
391 | ||
392 | unsigned int logic_probe_count = 0; | |
393 | ||
394 | // Clear the decode traces | |
395 | _decode_traces.clear(); | |
396 | ||
397 | // Detect what data types we will receive | |
398 | if(dev_inst) { | |
399 | assert(dev_inst->dev_inst()); | |
400 | for (const GSList *l = dev_inst->dev_inst()->probes; | |
401 | l; l = l->next) { | |
402 | const sr_probe *const probe = (const sr_probe *)l->data; | |
403 | if (!probe->enabled) | |
404 | continue; | |
405 | ||
406 | switch(probe->type) { | |
407 | case SR_PROBE_LOGIC: | |
408 | logic_probe_count++; | |
409 | break; | |
410 | } | |
411 | } | |
412 | } | |
413 | ||
414 | // Create data containers for the logic data snapshots | |
415 | { | |
416 | lock_guard<mutex> data_lock(_data_mutex); | |
417 | ||
418 | _logic_data.reset(); | |
419 | if (logic_probe_count != 0) { | |
420 | _logic_data.reset(new data::Logic( | |
421 | logic_probe_count)); | |
422 | assert(_logic_data); | |
423 | } | |
424 | } | |
425 | ||
426 | // Make the Signals list | |
427 | do { | |
428 | lock_guard<mutex> lock(_signals_mutex); | |
429 | ||
430 | _signals.clear(); | |
431 | ||
432 | if(!dev_inst) | |
433 | break; | |
434 | ||
435 | assert(dev_inst->dev_inst()); | |
436 | for (const GSList *l = dev_inst->dev_inst()->probes; | |
437 | l; l = l->next) { | |
438 | shared_ptr<view::Signal> signal; | |
439 | sr_probe *const probe = (sr_probe *)l->data; | |
440 | assert(probe); | |
441 | ||
442 | switch(probe->type) { | |
443 | case SR_PROBE_LOGIC: | |
444 | signal = shared_ptr<view::Signal>( | |
445 | new view::LogicSignal(dev_inst, | |
446 | probe, _logic_data)); | |
447 | break; | |
448 | ||
449 | case SR_PROBE_ANALOG: | |
450 | { | |
451 | shared_ptr<data::Analog> data( | |
452 | new data::Analog()); | |
453 | signal = shared_ptr<view::Signal>( | |
454 | new view::AnalogSignal(dev_inst, | |
455 | probe, data)); | |
456 | break; | |
457 | } | |
458 | ||
459 | default: | |
460 | assert(0); | |
461 | break; | |
462 | } | |
463 | ||
464 | assert(signal); | |
465 | _signals.push_back(signal); | |
466 | } | |
467 | ||
468 | } while(0); | |
469 | ||
470 | signals_changed(); | |
471 | } | |
472 | ||
473 | bool SigSession::is_trigger_enabled() const | |
474 | { | |
475 | assert(_dev_inst); | |
476 | assert(_dev_inst->dev_inst()); | |
477 | for (const GSList *l = _dev_inst->dev_inst()->probes; l; l = l->next) { | |
478 | const sr_probe *const p = (const sr_probe *)l->data; | |
479 | assert(p); | |
480 | if (p->trigger && p->trigger[0] != '\0') | |
481 | return true; | |
482 | } | |
483 | ||
484 | return false; | |
485 | } | |
486 | ||
487 | shared_ptr<view::Signal> SigSession::signal_from_probe( | |
488 | const sr_probe *probe) const | |
489 | { | |
490 | lock_guard<mutex> lock(_signals_mutex); | |
491 | BOOST_FOREACH(shared_ptr<view::Signal> sig, _signals) { | |
492 | assert(sig); | |
493 | if (sig->probe() == probe) | |
494 | return sig; | |
495 | } | |
496 | return shared_ptr<view::Signal>(); | |
497 | } | |
498 | ||
499 | void SigSession::read_sample_rate(const sr_dev_inst *const sdi) | |
500 | { | |
501 | GVariant *gvar; | |
502 | uint64_t sample_rate = 0; | |
503 | ||
504 | // Read out the sample rate | |
505 | if(sdi->driver) | |
506 | { | |
507 | const int ret = sr_config_get(sdi->driver, sdi, NULL, | |
508 | SR_CONF_SAMPLERATE, &gvar); | |
509 | if (ret != SR_OK) { | |
510 | qDebug("Failed to get samplerate\n"); | |
511 | return; | |
512 | } | |
513 | ||
514 | sample_rate = g_variant_get_uint64(gvar); | |
515 | g_variant_unref(gvar); | |
516 | } | |
517 | ||
518 | // Set the sample rate of all data | |
519 | const set< shared_ptr<data::SignalData> > data_set = get_data(); | |
520 | BOOST_FOREACH(shared_ptr<data::SignalData> data, data_set) { | |
521 | assert(data); | |
522 | data->set_samplerate(sample_rate); | |
523 | } | |
524 | } | |
525 | ||
526 | void SigSession::load_session_thread_proc( | |
527 | function<void (const QString)> error_handler) | |
528 | { | |
529 | (void)error_handler; | |
530 | ||
531 | sr_session_datafeed_callback_add(data_feed_in_proc, NULL); | |
532 | ||
533 | set_capture_state(Running); | |
534 | ||
535 | sr_session_run(); | |
536 | ||
537 | sr_session_destroy(); | |
538 | set_capture_state(Stopped); | |
539 | ||
540 | // Confirm that SR_DF_END was received | |
541 | assert(!_cur_logic_snapshot); | |
542 | assert(_cur_analog_snapshots.empty()); | |
543 | } | |
544 | ||
545 | void SigSession::load_input_thread_proc(const string name, | |
546 | sr_input *in, function<void (const QString)> error_handler) | |
547 | { | |
548 | (void)error_handler; | |
549 | ||
550 | assert(in); | |
551 | assert(in->format); | |
552 | ||
553 | sr_session_datafeed_callback_add(data_feed_in_proc, NULL); | |
554 | ||
555 | set_capture_state(Running); | |
556 | ||
557 | in->format->loadfile(in, name.c_str()); | |
558 | ||
559 | sr_session_destroy(); | |
560 | set_capture_state(Stopped); | |
561 | ||
562 | // Confirm that SR_DF_END was received | |
563 | assert(!_cur_logic_snapshot); | |
564 | assert(_cur_analog_snapshots.empty()); | |
565 | ||
566 | delete in; | |
567 | } | |
568 | ||
569 | void SigSession::sample_thread_proc(shared_ptr<DevInst> dev_inst, | |
570 | function<void (const QString)> error_handler) | |
571 | { | |
572 | assert(dev_inst); | |
573 | assert(dev_inst->dev_inst()); | |
574 | assert(error_handler); | |
575 | ||
576 | sr_session_new(); | |
577 | sr_session_datafeed_callback_add(data_feed_in_proc, NULL); | |
578 | ||
579 | if (sr_session_dev_add(dev_inst->dev_inst()) != SR_OK) { | |
580 | error_handler(tr("Failed to use device.")); | |
581 | sr_session_destroy(); | |
582 | return; | |
583 | } | |
584 | ||
585 | if (sr_session_start() != SR_OK) { | |
586 | error_handler(tr("Failed to start session.")); | |
587 | return; | |
588 | } | |
589 | ||
590 | set_capture_state(is_trigger_enabled() ? AwaitingTrigger : Running); | |
591 | ||
592 | sr_session_run(); | |
593 | sr_session_destroy(); | |
594 | ||
595 | set_capture_state(Stopped); | |
596 | ||
597 | // Confirm that SR_DF_END was received | |
598 | if (_cur_logic_snapshot) | |
599 | { | |
600 | qDebug("SR_DF_END was not received."); | |
601 | assert(0); | |
602 | } | |
603 | } | |
604 | ||
605 | void SigSession::feed_in_header(const sr_dev_inst *sdi) | |
606 | { | |
607 | read_sample_rate(sdi); | |
608 | } | |
609 | ||
610 | void SigSession::feed_in_meta(const sr_dev_inst *sdi, | |
611 | const sr_datafeed_meta &meta) | |
612 | { | |
613 | (void)sdi; | |
614 | ||
615 | for (const GSList *l = meta.config; l; l = l->next) { | |
616 | const sr_config *const src = (const sr_config*)l->data; | |
617 | switch (src->key) { | |
618 | case SR_CONF_SAMPLERATE: | |
619 | /// @todo handle samplerate changes | |
620 | /// samplerate = (uint64_t *)src->value; | |
621 | break; | |
622 | default: | |
623 | // Unknown metadata is not an error. | |
624 | break; | |
625 | } | |
626 | } | |
627 | ||
628 | signals_changed(); | |
629 | } | |
630 | ||
631 | void SigSession::feed_in_logic(const sr_datafeed_logic &logic) | |
632 | { | |
633 | lock_guard<mutex> lock(_data_mutex); | |
634 | ||
635 | if (!_logic_data) | |
636 | { | |
637 | qDebug() << "Unexpected logic packet"; | |
638 | return; | |
639 | } | |
640 | ||
641 | if (!_cur_logic_snapshot) | |
642 | { | |
643 | // This could be the first packet after a trigger | |
644 | set_capture_state(Running); | |
645 | ||
646 | // Create a new data snapshot | |
647 | _cur_logic_snapshot = shared_ptr<data::LogicSnapshot>( | |
648 | new data::LogicSnapshot(logic, _dev_inst->get_sample_limit())); | |
649 | _logic_data->push_snapshot(_cur_logic_snapshot); | |
650 | } | |
651 | else | |
652 | { | |
653 | // Append to the existing data snapshot | |
654 | _cur_logic_snapshot->append_payload(logic); | |
655 | } | |
656 | ||
657 | data_updated(); | |
658 | } | |
659 | ||
660 | void SigSession::feed_in_analog(const sr_datafeed_analog &analog) | |
661 | { | |
662 | lock_guard<mutex> lock(_data_mutex); | |
663 | ||
664 | const unsigned int probe_count = g_slist_length(analog.probes); | |
665 | const size_t sample_count = analog.num_samples / probe_count; | |
666 | const float *data = analog.data; | |
667 | bool sweep_beginning = false; | |
668 | ||
669 | for (GSList *p = analog.probes; p; p = p->next) | |
670 | { | |
671 | shared_ptr<data::AnalogSnapshot> snapshot; | |
672 | ||
673 | sr_probe *const probe = (sr_probe*)p->data; | |
674 | assert(probe); | |
675 | ||
676 | // Try to get the snapshot of the probe | |
677 | const map< const sr_probe*, shared_ptr<data::AnalogSnapshot> >:: | |
678 | iterator iter = _cur_analog_snapshots.find(probe); | |
679 | if (iter != _cur_analog_snapshots.end()) | |
680 | snapshot = (*iter).second; | |
681 | else | |
682 | { | |
683 | // If no snapshot was found, this means we havn't | |
684 | // created one yet. i.e. this is the first packet | |
685 | // in the sweep containing this snapshot. | |
686 | sweep_beginning = true; | |
687 | ||
688 | // Create a snapshot, keep it in the maps of probes | |
689 | snapshot = shared_ptr<data::AnalogSnapshot>( | |
690 | new data::AnalogSnapshot(_dev_inst->get_sample_limit())); | |
691 | _cur_analog_snapshots[probe] = snapshot; | |
692 | ||
693 | // Find the annalog data associated with the probe | |
694 | shared_ptr<view::AnalogSignal> sig = | |
695 | dynamic_pointer_cast<view::AnalogSignal>( | |
696 | signal_from_probe(probe)); | |
697 | assert(sig); | |
698 | ||
699 | shared_ptr<data::Analog> data(sig->analog_data()); | |
700 | assert(data); | |
701 | ||
702 | // Push the snapshot into the analog data. | |
703 | data->push_snapshot(snapshot); | |
704 | } | |
705 | ||
706 | assert(snapshot); | |
707 | ||
708 | // Append the samples in the snapshot | |
709 | snapshot->append_interleaved_samples(data++, sample_count, | |
710 | probe_count); | |
711 | } | |
712 | ||
713 | if (sweep_beginning) { | |
714 | // This could be the first packet after a trigger | |
715 | set_capture_state(Running); | |
716 | } | |
717 | ||
718 | data_updated(); | |
719 | } | |
720 | ||
721 | void SigSession::data_feed_in(const struct sr_dev_inst *sdi, | |
722 | const struct sr_datafeed_packet *packet) | |
723 | { | |
724 | assert(sdi); | |
725 | assert(packet); | |
726 | ||
727 | switch (packet->type) { | |
728 | case SR_DF_HEADER: | |
729 | feed_in_header(sdi); | |
730 | break; | |
731 | ||
732 | case SR_DF_META: | |
733 | assert(packet->payload); | |
734 | feed_in_meta(sdi, | |
735 | *(const sr_datafeed_meta*)packet->payload); | |
736 | break; | |
737 | ||
738 | case SR_DF_LOGIC: | |
739 | assert(packet->payload); | |
740 | feed_in_logic(*(const sr_datafeed_logic*)packet->payload); | |
741 | break; | |
742 | ||
743 | case SR_DF_ANALOG: | |
744 | assert(packet->payload); | |
745 | feed_in_analog(*(const sr_datafeed_analog*)packet->payload); | |
746 | break; | |
747 | ||
748 | case SR_DF_END: | |
749 | { | |
750 | { | |
751 | lock_guard<mutex> lock(_data_mutex); | |
752 | _cur_logic_snapshot.reset(); | |
753 | _cur_analog_snapshots.clear(); | |
754 | } | |
755 | data_updated(); | |
756 | break; | |
757 | } | |
758 | } | |
759 | } | |
760 | ||
761 | void SigSession::data_feed_in_proc(const struct sr_dev_inst *sdi, | |
762 | const struct sr_datafeed_packet *packet, void *cb_data) | |
763 | { | |
764 | (void) cb_data; | |
765 | assert(_session); | |
766 | _session->data_feed_in(sdi, packet); | |
767 | } | |
768 | ||
769 | } // namespace pv |