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c23c8659 ML |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013-2014 Martin Ling <martin-sigrok@earth.li> | |
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 3 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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
07443fd2 ML |
20 | /** |
21 | ||
22 | @mainpage API Reference | |
23 | ||
24 | Introduction | |
25 | ------------ | |
26 | ||
27 | The sigrok++ API provides an object-oriented C++ interface to the functionality | |
28 | in libsigrok, including automatic memory and resource management. | |
29 | ||
30 | It is built on top of the public libsigrok C API, and is designed to be used as | |
31 | a standalone alternative API. Programs should not mix usage of the C and C++ | |
32 | APIs; the C++ interface code needs to have full control of all C API calls for | |
33 | resources to be managed correctly. | |
34 | ||
35 | Memory management | |
36 | ----------------- | |
37 | ||
38 | All runtime objects created through the C++ API are passed and accessed via | |
39 | shared pointers, using the C++11 std::shared_ptr implementation. This means | |
40 | that a reference count is kept for each object. | |
41 | ||
42 | Shared pointers can be copied and assigned in a user's program, automatically | |
43 | updating their reference count and deleting objects when they are no longer in | |
44 | use. The C++ interface code also keeps track of internal dependencies between | |
45 | libsigrok resources, and ensures that objects are not prematurely deleted when | |
46 | their resources are in use by other objects. | |
47 | ||
48 | This means that management of sigrok++ objects and their underlying libsigrok | |
49 | resources can be treated as fully automatic. As long as all shared pointers to | |
50 | objects are deleted or reassigned when no longer in use, all underlying | |
51 | resources will be released at the right time. | |
52 | ||
53 | Getting started | |
54 | --------------- | |
55 | ||
56 | Usage of the C++ API needs to begin with a call to sigrok::Context::create(). | |
57 | This will create the global libsigrok context and returns a shared pointer to | |
58 | the sigrok::Context object. Methods on this object provide access to the | |
59 | hardware drivers, input and output formats supported by the library, as well | |
60 | as means of creating other objects such as sessions and triggers. | |
61 | ||
62 | Error handling | |
63 | -------------- | |
64 | ||
65 | When any libsigrok C API call returns an error, a sigrok::Error exception is | |
66 | raised, which provides access to the error code and description. | |
67 | ||
68 | */ | |
69 | ||
c23c8659 ML |
70 | #ifndef LIBSIGROK_HPP |
71 | #define LIBSIGROK_HPP | |
72 | ||
73 | #include "libsigrok/libsigrok.h" | |
74 | #include <glibmm-2.4/glibmm.h> | |
75 | ||
76 | #include <stdexcept> | |
77 | #include <memory> | |
78 | #include <vector> | |
79 | #include <map> | |
80 | ||
81 | namespace sigrok | |
82 | { | |
83 | ||
84 | using namespace std; | |
85 | ||
86 | /* Forward declarations */ | |
87 | class SR_API Error; | |
88 | class SR_API Context; | |
89 | class SR_API Driver; | |
90 | class SR_API Device; | |
91 | class SR_API HardwareDevice; | |
92 | class SR_API Channel; | |
93 | class SR_API EventSource; | |
94 | class SR_API Session; | |
95 | class SR_API ConfigKey; | |
96 | class SR_API InputFormat; | |
97 | class SR_API OutputFormat; | |
98 | class SR_API LogLevel; | |
99 | class SR_API ChannelGroup; | |
100 | class SR_API Trigger; | |
101 | class SR_API TriggerStage; | |
102 | class SR_API TriggerMatch; | |
103 | class SR_API TriggerMatchType; | |
104 | class SR_API ChannelType; | |
105 | class SR_API Packet; | |
106 | class SR_API PacketPayload; | |
107 | class SR_API PacketType; | |
108 | class SR_API Quantity; | |
109 | class SR_API Unit; | |
110 | class SR_API QuantityFlag; | |
111 | class SR_API InputFileDevice; | |
112 | class SR_API Output; | |
113 | class SR_API DataType; | |
58aa1f83 | 114 | class SR_API Option; |
c23c8659 ML |
115 | |
116 | /** Exception thrown when an error code is returned by any libsigrok call. */ | |
117 | class SR_API Error: public exception | |
118 | { | |
119 | public: | |
120 | Error(int result); | |
121 | ~Error() throw(); | |
122 | const int result; | |
123 | const char *what() const throw(); | |
124 | }; | |
125 | ||
07443fd2 | 126 | /* Base template for most classes which wrap a struct type from libsigrok. */ |
c23c8659 ML |
127 | template <class Parent, typename Struct> class SR_API StructureWrapper : |
128 | public enable_shared_from_this<StructureWrapper<Parent, Struct> > | |
129 | { | |
7649683c | 130 | protected: |
07443fd2 | 131 | /* Parent object which owns this child object's underlying structure. |
c23c8659 ML |
132 | |
133 | This shared pointer will be null when this child is unused, but | |
134 | will be assigned to point to the parent before any shared pointer | |
135 | to this child is handed out to the user. | |
136 | ||
137 | When the reference count of this child falls to zero, this shared | |
138 | pointer to its parent is reset by a custom deleter on the child's | |
139 | shared pointer. | |
140 | ||
141 | This strategy ensures that the destructors for both the child and | |
142 | the parent are called at the correct time, i.e. only when all | |
143 | references to both the parent and all its children are gone. */ | |
144 | shared_ptr<Parent> parent; | |
7649683c ML |
145 | |
146 | public: | |
147 | shared_ptr<StructureWrapper<Parent, Struct> > | |
148 | get_shared_pointer(Parent *parent) | |
149 | { | |
150 | this->parent = static_pointer_cast<Parent>(parent->shared_from_this()); | |
151 | return shared_ptr<StructureWrapper<Parent, Struct> >( | |
152 | this, reset_parent); | |
153 | } | |
154 | shared_ptr<StructureWrapper<Parent, Struct> > | |
155 | get_shared_pointer(shared_ptr<Parent> parent) | |
156 | { | |
157 | this->parent = parent; | |
158 | return shared_ptr<StructureWrapper<Parent, Struct> >( | |
159 | this, reset_parent); | |
160 | } | |
c23c8659 | 161 | protected: |
7649683c ML |
162 | static void reset_parent(StructureWrapper<Parent, Struct> *object) |
163 | { | |
164 | object->parent.reset(); | |
165 | } | |
166 | ||
c23c8659 ML |
167 | Struct *structure; |
168 | ||
169 | StructureWrapper<Parent, Struct>(Struct *structure) : | |
170 | structure(structure) | |
171 | { | |
172 | } | |
173 | }; | |
174 | ||
175 | /** Type of log callback */ | |
176 | typedef function<void(const LogLevel *, string message)> LogCallbackFunction; | |
177 | ||
07443fd2 | 178 | /** The global libsigrok context */ |
c23c8659 ML |
179 | class SR_API Context : public enable_shared_from_this<Context> |
180 | { | |
181 | public: | |
182 | /** Create new context */ | |
183 | static shared_ptr<Context> create(); | |
184 | /** libsigrok package version. */ | |
185 | string get_package_version(); | |
186 | /** libsigrok library version. */ | |
187 | string get_lib_version(); | |
188 | /** Available hardware drivers, indexed by name. */ | |
189 | map<string, shared_ptr<Driver> > get_drivers(); | |
190 | /** Available input formats, indexed by name. */ | |
191 | map<string, shared_ptr<InputFormat> > get_input_formats(); | |
192 | /** Available output formats, indexed by name. */ | |
193 | map<string, shared_ptr<OutputFormat> > get_output_formats(); | |
194 | /** Current log level. */ | |
195 | const LogLevel *get_log_level(); | |
196 | /** Set the log level. */ | |
197 | void set_log_level(const LogLevel *level); | |
198 | /** Current log domain. */ | |
199 | string get_log_domain(); | |
200 | /** Set the log domain. */ | |
201 | void set_log_domain(string value); | |
202 | /** Set the log callback. */ | |
203 | void set_log_callback(LogCallbackFunction callback); | |
204 | /** Set the log callback to the default handler. */ | |
205 | void set_log_callback_default(); | |
206 | /** Create a new session. */ | |
207 | shared_ptr<Session> create_session(); | |
208 | /** Load a saved session. */ | |
209 | shared_ptr<Session> load_session(string filename); | |
210 | /** Create a new trigger. */ | |
211 | shared_ptr<Trigger> create_trigger(string name); | |
212 | protected: | |
213 | struct sr_context *structure; | |
214 | map<string, Driver *> drivers; | |
215 | map<string, InputFormat *> input_formats; | |
216 | map<string, OutputFormat *> output_formats; | |
217 | Session *session; | |
218 | LogCallbackFunction log_callback; | |
219 | Context(); | |
220 | ~Context(); | |
221 | /** Deleter needed to allow shared_ptr use with protected destructor. */ | |
222 | class Deleter | |
223 | { | |
224 | public: | |
225 | void operator()(Context *context) { delete context; } | |
226 | }; | |
227 | friend class Deleter; | |
228 | friend class Session; | |
229 | friend class Driver; | |
230 | }; | |
231 | ||
07443fd2 | 232 | /** A hardware driver provided by the library */ |
c23c8659 ML |
233 | class SR_API Driver : public StructureWrapper<Context, struct sr_dev_driver> |
234 | { | |
235 | public: | |
236 | /** Name of this driver. */ | |
237 | string get_name(); | |
238 | /** Long name for this driver. */ | |
239 | string get_long_name(); | |
240 | /** Scan for devices and return a list of devices found. */ | |
241 | vector<shared_ptr<HardwareDevice> > scan( | |
242 | map<const ConfigKey *, Glib::VariantBase> options = {}); | |
243 | protected: | |
244 | bool initialized; | |
245 | vector<HardwareDevice *> devices; | |
246 | Driver(struct sr_dev_driver *structure); | |
247 | ~Driver(); | |
248 | friend class Context; | |
249 | friend class HardwareDevice; | |
250 | friend class ChannelGroup; | |
251 | }; | |
252 | ||
253 | /** An object that can be configured. */ | |
254 | class SR_API Configurable | |
255 | { | |
256 | public: | |
257 | /** Read configuration for the given key. */ | |
258 | Glib::VariantBase config_get(const ConfigKey *key); | |
259 | /** Set configuration for the given key to a specified value. */ | |
260 | void config_set(const ConfigKey *key, Glib::VariantBase value); | |
261 | /** Enumerate available values for the given configuration key. */ | |
e194c011 | 262 | Glib::VariantContainerBase config_list(const ConfigKey *key); |
c23c8659 ML |
263 | protected: |
264 | Configurable( | |
265 | struct sr_dev_driver *driver, | |
266 | struct sr_dev_inst *sdi, | |
267 | struct sr_channel_group *channel_group); | |
268 | virtual ~Configurable(); | |
269 | struct sr_dev_driver *config_driver; | |
270 | struct sr_dev_inst *config_sdi; | |
271 | struct sr_channel_group *config_channel_group; | |
272 | }; | |
273 | ||
07443fd2 | 274 | /** A generic device, either hardware or virtual */ |
c23c8659 ML |
275 | class SR_API Device : |
276 | public Configurable, | |
277 | public StructureWrapper<Context, struct sr_dev_inst> | |
278 | { | |
279 | public: | |
f36ca889 ML |
280 | /** Description identifying this device. */ |
281 | string get_description(); | |
c23c8659 ML |
282 | /** Vendor name for this device. */ |
283 | string get_vendor(); | |
284 | /** Model name for this device. */ | |
285 | string get_model(); | |
286 | /** Version string for this device. */ | |
287 | string get_version(); | |
288 | /** List of the channels available on this device. */ | |
289 | vector<shared_ptr<Channel> > get_channels(); | |
6be7a7f2 ML |
290 | /** Channel groups available on this device, indexed by name. */ |
291 | map<string, shared_ptr<ChannelGroup> > get_channel_groups(); | |
c23c8659 ML |
292 | /** Open device. */ |
293 | void open(); | |
294 | /** Close device. */ | |
295 | void close(); | |
296 | protected: | |
297 | Device(struct sr_dev_inst *structure); | |
298 | ~Device(); | |
4178d971 ML |
299 | shared_ptr<Channel> get_channel(struct sr_channel *ptr); |
300 | map<struct sr_channel *, Channel *> channels; | |
6be7a7f2 | 301 | map<string, ChannelGroup *> channel_groups; |
c23c8659 ML |
302 | /** Deleter needed to allow shared_ptr use with protected destructor. */ |
303 | class Deleter | |
304 | { | |
305 | public: | |
306 | void operator()(Device *device) { delete device; } | |
307 | }; | |
308 | friend class Deleter; | |
309 | friend class Session; | |
310 | friend class Channel; | |
311 | friend class ChannelGroup; | |
312 | friend class Output; | |
2928f47d | 313 | friend class Analog; |
c23c8659 ML |
314 | }; |
315 | ||
07443fd2 | 316 | /** A real hardware device, connected via a driver */ |
c23c8659 ML |
317 | class SR_API HardwareDevice : public Device |
318 | { | |
319 | public: | |
320 | /** Driver providing this device. */ | |
321 | shared_ptr<Driver> get_driver(); | |
c23c8659 ML |
322 | protected: |
323 | HardwareDevice(Driver *driver, struct sr_dev_inst *structure); | |
324 | ~HardwareDevice(); | |
325 | Driver *driver; | |
c23c8659 ML |
326 | friend class Driver; |
327 | friend class ChannelGroup; | |
328 | }; | |
329 | ||
07443fd2 | 330 | /** A channel on a device */ |
c23c8659 ML |
331 | class SR_API Channel : public StructureWrapper<Device, struct sr_channel> |
332 | { | |
333 | public: | |
334 | /** Current name of this channel. */ | |
335 | string get_name(); | |
336 | /** Set the name of this channel. */ | |
337 | void set_name(string name); | |
338 | /** Type of this channel. */ | |
339 | const ChannelType *get_type(); | |
340 | /** Enabled status of this channel. */ | |
341 | bool get_enabled(); | |
342 | /** Set the enabled status of this channel. */ | |
343 | void set_enabled(bool value); | |
06bd935e ML |
344 | /** Get the index number of this channel. */ |
345 | unsigned int get_index(); | |
c23c8659 ML |
346 | protected: |
347 | Channel(struct sr_channel *structure); | |
348 | ~Channel(); | |
349 | const ChannelType * const type; | |
350 | friend class Device; | |
351 | friend class ChannelGroup; | |
352 | friend class Session; | |
353 | friend class TriggerStage; | |
354 | }; | |
355 | ||
07443fd2 | 356 | /** A group of channels on a device, which share some configuration */ |
c23c8659 | 357 | class SR_API ChannelGroup : |
6be7a7f2 | 358 | public StructureWrapper<Device, struct sr_channel_group>, |
c23c8659 ML |
359 | public Configurable |
360 | { | |
361 | public: | |
362 | /** Name of this channel group. */ | |
363 | string get_name(); | |
364 | /** List of the channels in this group. */ | |
365 | vector<shared_ptr<Channel> > get_channels(); | |
366 | protected: | |
6be7a7f2 | 367 | ChannelGroup(Device *device, struct sr_channel_group *structure); |
c23c8659 ML |
368 | ~ChannelGroup(); |
369 | vector<Channel *> channels; | |
6be7a7f2 | 370 | friend class Device; |
c23c8659 ML |
371 | }; |
372 | ||
07443fd2 | 373 | /** A trigger configuration */ |
c23c8659 ML |
374 | class SR_API Trigger : public enable_shared_from_this<Trigger> |
375 | { | |
376 | public: | |
377 | string get_name(); | |
378 | vector<shared_ptr<TriggerStage> > get_stages(); | |
379 | shared_ptr<TriggerStage> add_stage(); | |
380 | protected: | |
381 | Trigger(shared_ptr<Context> context, string name); | |
382 | ~Trigger(); | |
383 | struct sr_trigger *structure; | |
384 | shared_ptr<Context> context; | |
385 | vector<TriggerStage *> stages; | |
386 | /** Deleter needed to allow shared_ptr use with protected destructor. */ | |
387 | class Deleter | |
388 | { | |
389 | public: | |
390 | void operator()(Trigger *trigger) { delete trigger; } | |
391 | }; | |
392 | friend class Context; | |
6fa0eb86 | 393 | friend class Session; |
c23c8659 ML |
394 | }; |
395 | ||
07443fd2 | 396 | /** A stage in a trigger configuration */ |
c23c8659 ML |
397 | class SR_API TriggerStage : public StructureWrapper<Trigger, struct sr_trigger_stage> |
398 | { | |
399 | public: | |
400 | int get_number(); | |
401 | vector<shared_ptr<TriggerMatch> > get_matches(); | |
402 | void add_match(shared_ptr<Channel> channel, const TriggerMatchType *type); | |
403 | void add_match(shared_ptr<Channel> channel, const TriggerMatchType *type, float value); | |
404 | protected: | |
405 | vector<TriggerMatch *> matches; | |
406 | TriggerStage(struct sr_trigger_stage *structure); | |
407 | ~TriggerStage(); | |
408 | friend class Trigger; | |
409 | }; | |
410 | ||
07443fd2 | 411 | /** A match condition in a trigger configuration */ |
c23c8659 ML |
412 | class SR_API TriggerMatch : public StructureWrapper<TriggerStage, struct sr_trigger_match> |
413 | { | |
414 | public: | |
415 | shared_ptr<Channel> get_channel(); | |
416 | const TriggerMatchType *get_type(); | |
417 | float get_value(); | |
418 | protected: | |
419 | TriggerMatch(struct sr_trigger_match *structure, shared_ptr<Channel> channel); | |
420 | ~TriggerMatch(); | |
421 | shared_ptr<Channel> channel; | |
422 | friend class TriggerStage; | |
423 | }; | |
424 | ||
425 | /** Type of datafeed callback */ | |
426 | typedef function<void(shared_ptr<Device>, shared_ptr<Packet>)> | |
427 | DatafeedCallbackFunction; | |
428 | ||
07443fd2 | 429 | /* Data required for C callback function to call a C++ datafeed callback */ |
c23c8659 ML |
430 | class SR_PRIV DatafeedCallbackData |
431 | { | |
432 | public: | |
433 | void run(const struct sr_dev_inst *sdi, | |
434 | const struct sr_datafeed_packet *pkt); | |
435 | protected: | |
436 | DatafeedCallbackFunction callback; | |
437 | DatafeedCallbackData(Session *session, | |
438 | DatafeedCallbackFunction callback); | |
439 | Session *session; | |
440 | friend class Session; | |
441 | }; | |
442 | ||
443 | /** Type of source callback */ | |
444 | typedef function<bool(Glib::IOCondition)> | |
445 | SourceCallbackFunction; | |
446 | ||
07443fd2 | 447 | /* Data required for C callback function to call a C++ source callback */ |
c23c8659 ML |
448 | class SR_PRIV SourceCallbackData |
449 | { | |
450 | public: | |
451 | bool run(int revents); | |
452 | protected: | |
453 | SourceCallbackData(shared_ptr<EventSource> source); | |
454 | shared_ptr<EventSource> source; | |
455 | friend class Session; | |
456 | }; | |
457 | ||
07443fd2 | 458 | /** An I/O event source */ |
c23c8659 ML |
459 | class SR_API EventSource |
460 | { | |
461 | public: | |
462 | /** Create an event source from a file descriptor. */ | |
463 | static shared_ptr<EventSource> create(int fd, Glib::IOCondition events, | |
464 | int timeout, SourceCallbackFunction callback); | |
465 | /** Create an event source from a Glib::PollFD */ | |
466 | static shared_ptr<EventSource> create(Glib::PollFD pollfd, int timeout, | |
467 | SourceCallbackFunction callback); | |
468 | /** Create an event source from a Glib::IOChannel */ | |
469 | static shared_ptr<EventSource> create( | |
470 | Glib::RefPtr<Glib::IOChannel> channel, Glib::IOCondition events, | |
471 | int timeout, SourceCallbackFunction callback); | |
472 | protected: | |
473 | EventSource(int timeout, SourceCallbackFunction callback); | |
474 | ~EventSource(); | |
475 | enum source_type { | |
476 | SOURCE_FD, | |
477 | SOURCE_POLLFD, | |
478 | SOURCE_IOCHANNEL | |
479 | } type; | |
480 | int fd; | |
481 | Glib::PollFD pollfd; | |
482 | Glib::RefPtr<Glib::IOChannel> channel; | |
483 | Glib::IOCondition events; | |
484 | int timeout; | |
485 | SourceCallbackFunction callback; | |
486 | /** Deleter needed to allow shared_ptr use with protected destructor. */ | |
487 | class Deleter | |
488 | { | |
489 | public: | |
490 | void operator()(EventSource *source) { delete source; } | |
491 | }; | |
492 | friend class Deleter; | |
493 | friend class Session; | |
494 | friend class SourceCallbackData; | |
495 | }; | |
496 | ||
07443fd2 | 497 | /** A sigrok session */ |
c23c8659 ML |
498 | class SR_API Session |
499 | { | |
500 | public: | |
501 | /** Add a device to this session. */ | |
502 | void add_device(shared_ptr<Device> device); | |
503 | /** List devices attached to this session. */ | |
504 | vector<shared_ptr<Device> > get_devices(); | |
505 | /** Remove all devices from this session. */ | |
506 | void remove_devices(); | |
507 | /** Add a datafeed callback to this session. */ | |
508 | void add_datafeed_callback(DatafeedCallbackFunction callback); | |
509 | /** Remove all datafeed callbacks from this session. */ | |
510 | void remove_datafeed_callbacks(); | |
511 | /** Add an event source. */ | |
512 | void add_source(shared_ptr<EventSource> source); | |
513 | /** Remove an event source. */ | |
514 | void remove_source(shared_ptr<EventSource> source); | |
515 | /** Start the session. */ | |
516 | void start(); | |
517 | /** Run the session event loop. */ | |
518 | void run(); | |
519 | /** Stop the session. */ | |
520 | void stop(); | |
521 | /** Begin saving session to a file. */ | |
522 | void begin_save(string filename); | |
523 | /** Append a packet to the session file being saved. */ | |
1d67cfb4 ML |
524 | void append(shared_ptr<Packet> packet); |
525 | /** Append raw logic data to the session file being saved. */ | |
526 | void append(void *data, size_t length, unsigned int unit_size); | |
6fa0eb86 ML |
527 | /** Get current trigger setting. */ |
528 | shared_ptr<Trigger> get_trigger(); | |
529 | /** Set trigger setting. */ | |
530 | void set_trigger(shared_ptr<Trigger> trigger); | |
c23c8659 ML |
531 | protected: |
532 | Session(shared_ptr<Context> context); | |
533 | Session(shared_ptr<Context> context, string filename); | |
534 | ~Session(); | |
535 | struct sr_session *structure; | |
536 | const shared_ptr<Context> context; | |
537 | map<const struct sr_dev_inst *, shared_ptr<Device> > devices; | |
538 | vector<DatafeedCallbackData *> datafeed_callbacks; | |
539 | map<shared_ptr<EventSource>, SourceCallbackData *> source_callbacks; | |
540 | bool saving; | |
541 | bool save_initialized; | |
542 | string save_filename; | |
543 | uint64_t save_samplerate; | |
6fa0eb86 | 544 | shared_ptr<Trigger> trigger; |
c23c8659 ML |
545 | /** Deleter needed to allow shared_ptr use with protected destructor. */ |
546 | class Deleter | |
547 | { | |
548 | public: | |
549 | void operator()(Session *session) { delete session; } | |
550 | }; | |
551 | friend class Deleter; | |
552 | friend class Context; | |
553 | friend class DatafeedCallbackData; | |
554 | }; | |
555 | ||
07443fd2 | 556 | /** A packet on the session datafeed */ |
2928f47d | 557 | class SR_API Packet : public enable_shared_from_this<Packet> |
c23c8659 ML |
558 | { |
559 | public: | |
90ba83f2 ML |
560 | /** Type of this packet. */ |
561 | const PacketType *get_type(); | |
c23c8659 | 562 | /** Payload of this packet. */ |
2928f47d | 563 | shared_ptr<PacketPayload> get_payload(); |
c23c8659 | 564 | protected: |
2928f47d ML |
565 | Packet(shared_ptr<Device> device, |
566 | const struct sr_datafeed_packet *structure); | |
c23c8659 ML |
567 | ~Packet(); |
568 | const struct sr_datafeed_packet *structure; | |
2928f47d | 569 | shared_ptr<Device> device; |
c23c8659 ML |
570 | PacketPayload *payload; |
571 | /** Deleter needed to allow shared_ptr use with protected destructor. */ | |
572 | class Deleter | |
573 | { | |
574 | public: | |
575 | void operator()(Packet *packet) { delete packet; } | |
576 | }; | |
577 | friend class Deleter; | |
578 | friend class Session; | |
579 | friend class Output; | |
580 | friend class DatafeedCallbackData; | |
2928f47d ML |
581 | friend class Header; |
582 | friend class Meta; | |
583 | friend class Logic; | |
584 | friend class Analog; | |
c23c8659 ML |
585 | }; |
586 | ||
07443fd2 | 587 | /** Abstract base class for datafeed packet payloads */ |
c23c8659 ML |
588 | class SR_API PacketPayload |
589 | { | |
590 | protected: | |
591 | PacketPayload(); | |
592 | virtual ~PacketPayload() = 0; | |
2928f47d ML |
593 | shared_ptr<PacketPayload> get_shared_pointer(Packet *parent) { |
594 | return static_pointer_cast<PacketPayload>(get_shared_pointer(parent)); | |
595 | } | |
596 | /** Deleter needed to allow shared_ptr use with protected destructor. */ | |
597 | class Deleter | |
598 | { | |
599 | public: | |
600 | void operator()(PacketPayload *payload) { delete payload; } | |
601 | }; | |
602 | friend class Deleter; | |
c23c8659 ML |
603 | friend class Packet; |
604 | friend class Output; | |
605 | }; | |
606 | ||
2928f47d ML |
607 | /** Payload of a datafeed header packet */ |
608 | class SR_API Header : public PacketPayload, | |
609 | public StructureWrapper<Packet, const struct sr_datafeed_header> | |
610 | { | |
611 | public: | |
612 | int get_feed_version(); | |
613 | Glib::TimeVal get_start_time(); | |
614 | protected: | |
615 | Header(const struct sr_datafeed_header *structure); | |
616 | ~Header(); | |
617 | const struct sr_datafeed_header *structure; | |
618 | friend class Packet; | |
619 | }; | |
620 | ||
621 | /** Payload of a datafeed metadata packet */ | |
622 | class SR_API Meta : public PacketPayload, | |
623 | public StructureWrapper<Packet, const struct sr_datafeed_meta> | |
624 | { | |
625 | public: | |
626 | map<const ConfigKey *, Glib::VariantBase> get_config(); | |
627 | protected: | |
628 | Meta(const struct sr_datafeed_meta *structure); | |
629 | ~Meta(); | |
630 | const struct sr_datafeed_meta *structure; | |
631 | map<const ConfigKey *, Glib::VariantBase> config; | |
632 | friend class Packet; | |
633 | }; | |
634 | ||
07443fd2 | 635 | /** Payload of a datafeed packet with logic data */ |
2928f47d ML |
636 | class SR_API Logic : public PacketPayload, |
637 | public StructureWrapper<Packet, const struct sr_datafeed_logic> | |
c23c8659 | 638 | { |
2928f47d ML |
639 | public: |
640 | /* Pointer to data. */ | |
641 | void *get_data_pointer(); | |
642 | /* Data length in bytes. */ | |
643 | size_t get_data_length(); | |
644 | /* Size of each sample in bytes. */ | |
645 | unsigned int get_unit_size(); | |
c23c8659 ML |
646 | protected: |
647 | Logic(const struct sr_datafeed_logic *structure); | |
648 | ~Logic(); | |
649 | const struct sr_datafeed_logic *structure; | |
c23c8659 ML |
650 | friend class Packet; |
651 | }; | |
652 | ||
07443fd2 | 653 | /** Payload of a datafeed packet with analog data */ |
2928f47d ML |
654 | class SR_API Analog : public PacketPayload, |
655 | public StructureWrapper<Packet, const struct sr_datafeed_analog> | |
c23c8659 ML |
656 | { |
657 | public: | |
2928f47d ML |
658 | /** Pointer to data. */ |
659 | float *get_data_pointer(); | |
c23c8659 ML |
660 | /** Number of samples in this packet. */ |
661 | unsigned int get_num_samples(); | |
2928f47d ML |
662 | /** Channels for which this packet contains data. */ |
663 | vector<shared_ptr<Channel> > get_channels(); | |
c23c8659 ML |
664 | /** Measured quantity of the samples in this packet. */ |
665 | const Quantity *get_mq(); | |
666 | /** Unit of the samples in this packet. */ | |
667 | const Unit *get_unit(); | |
668 | /** Measurement flags associated with the samples in this packet. */ | |
669 | vector<const QuantityFlag *> get_mq_flags(); | |
670 | protected: | |
671 | Analog(const struct sr_datafeed_analog *structure); | |
672 | ~Analog(); | |
673 | const struct sr_datafeed_analog *structure; | |
c23c8659 ML |
674 | friend class Packet; |
675 | }; | |
676 | ||
07443fd2 | 677 | /** An input format supported by the library */ |
c23c8659 ML |
678 | class SR_API InputFormat : |
679 | public StructureWrapper<Context, struct sr_input_format> | |
680 | { | |
681 | public: | |
682 | /** Name of this input format. */ | |
683 | string get_name(); | |
684 | /** Description of this input format. */ | |
685 | string get_description(); | |
686 | /** Check whether a given file matches this input format. */ | |
687 | bool format_match(string filename); | |
688 | /** Open a file using this input format. */ | |
689 | shared_ptr<InputFileDevice> open_file(string filename, | |
690 | map<string, string> options = {}); | |
691 | protected: | |
692 | InputFormat(struct sr_input_format *structure); | |
693 | ~InputFormat(); | |
694 | friend class Context; | |
695 | friend class InputFileDevice; | |
696 | }; | |
697 | ||
07443fd2 | 698 | /** A virtual device associated with an input file */ |
c23c8659 ML |
699 | class SR_API InputFileDevice : public Device |
700 | { | |
701 | public: | |
702 | /** Load data from file. */ | |
703 | void load(); | |
704 | protected: | |
705 | InputFileDevice(shared_ptr<InputFormat> format, | |
706 | struct sr_input *input, string filename); | |
707 | ~InputFileDevice(); | |
708 | struct sr_input *input; | |
709 | shared_ptr<InputFormat> format; | |
710 | string filename; | |
711 | /** Deleter needed to allow shared_ptr use with protected destructor. */ | |
712 | class Deleter | |
713 | { | |
714 | public: | |
715 | void operator()(InputFileDevice *device) { delete device; } | |
716 | }; | |
717 | friend class Deleter; | |
718 | friend class InputFormat; | |
719 | }; | |
720 | ||
58aa1f83 ML |
721 | /** An option used by an output format */ |
722 | class SR_API Option | |
723 | { | |
724 | public: | |
725 | /** Short name of this option suitable for command line usage. */ | |
726 | string get_id(); | |
727 | /** Short name of this option suitable for GUI usage. */ | |
728 | string get_name(); | |
729 | /** Description of this option in a sentence. */ | |
730 | string get_description(); | |
731 | /** Default value for this option. */ | |
732 | Glib::VariantBase get_default_value(); | |
733 | /** Possible values for this option, if a limited set. */ | |
734 | vector<Glib::VariantBase> get_values(); | |
735 | protected: | |
736 | Option(const struct sr_option *structure, | |
737 | shared_ptr<const struct sr_option> structure_array); | |
738 | ~Option(); | |
739 | const struct sr_option *structure; | |
740 | shared_ptr<const struct sr_option> structure_array; | |
741 | /** Deleter needed to allow shared_ptr use with protected destructor. */ | |
742 | class Deleter | |
743 | { | |
744 | public: | |
745 | void operator()(Option *option) { delete option; } | |
746 | }; | |
747 | friend class Deleter; | |
748 | friend class OutputFormat; | |
749 | }; | |
750 | ||
07443fd2 | 751 | /** An output format supported by the library */ |
c23c8659 | 752 | class SR_API OutputFormat : |
58aa1f83 | 753 | public StructureWrapper<Context, const struct sr_output_module> |
c23c8659 ML |
754 | { |
755 | public: | |
756 | /** Name of this output format. */ | |
757 | string get_name(); | |
758 | /** Description of this output format. */ | |
759 | string get_description(); | |
58aa1f83 ML |
760 | /** Options supported by this output format. */ |
761 | map<string, shared_ptr<Option> > get_options(); | |
c23c8659 | 762 | /** Create an output using this format. */ |
58aa1f83 ML |
763 | shared_ptr<Output> create_output(shared_ptr<Device> device, |
764 | map<string, Glib::VariantBase> options = {}); | |
c23c8659 | 765 | protected: |
58aa1f83 | 766 | OutputFormat(const struct sr_output_module *structure); |
c23c8659 ML |
767 | ~OutputFormat(); |
768 | friend class Context; | |
769 | friend class Output; | |
770 | }; | |
771 | ||
07443fd2 | 772 | /** An output instance (an output format applied to a device) */ |
c23c8659 ML |
773 | class SR_API Output |
774 | { | |
775 | public: | |
776 | /** Update output with data from the given packet. */ | |
777 | string receive(shared_ptr<Packet> packet); | |
778 | protected: | |
779 | Output(shared_ptr<OutputFormat> format, shared_ptr<Device> device); | |
780 | Output(shared_ptr<OutputFormat> format, | |
58aa1f83 | 781 | shared_ptr<Device> device, map<string, Glib::VariantBase> options); |
c23c8659 | 782 | ~Output(); |
58aa1f83 | 783 | const struct sr_output *structure; |
c23c8659 ML |
784 | const shared_ptr<OutputFormat> format; |
785 | const shared_ptr<Device> device; | |
58aa1f83 | 786 | const map<string, Glib::VariantBase> options; |
c23c8659 ML |
787 | /** Deleter needed to allow shared_ptr use with protected destructor. */ |
788 | class Deleter | |
789 | { | |
790 | public: | |
791 | void operator()(Output *output) { delete output; } | |
792 | }; | |
793 | friend class Deleter; | |
794 | friend class OutputFormat; | |
795 | }; | |
796 | ||
797 | /** Base class for objects which wrap an enumeration value from libsigrok */ | |
798 | template <typename T> class SR_API EnumValue | |
799 | { | |
800 | public: | |
801 | /** The enum constant associated with this value. */ | |
802 | T get_id() const { return id; } | |
803 | /** The name associated with this value. */ | |
804 | string get_name() const { return name; } | |
805 | protected: | |
806 | EnumValue(T id, const char name[]) : id(id), name(name) {} | |
807 | ~EnumValue() {} | |
808 | const T id; | |
809 | const string name; | |
810 | }; | |
811 | ||
812 | #include "enums.hpp" | |
813 | ||
814 | } | |
815 | ||
816 | #endif // LIBSIGROK_HPP |