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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> | |
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 | ||
20 | #ifndef LIBSIGROK_SIGROK_H | |
21 | #define LIBSIGROK_SIGROK_H | |
22 | ||
23 | #include <stdio.h> | |
24 | #include <sys/time.h> | |
25 | #include <stdint.h> | |
26 | #include <inttypes.h> | |
27 | #include <glib.h> | |
28 | ||
29 | #ifdef __cplusplus | |
30 | extern "C" { | |
31 | #endif | |
32 | ||
33 | /** | |
34 | * @file | |
35 | * | |
36 | * The public libsigrok header file to be used by frontends. | |
37 | * | |
38 | * This is the only file that libsigrok users (frontends) are supposed to | |
39 | * use and #include. There are other header files which get installed with | |
40 | * libsigrok, but those are not meant to be used directly by frontends. | |
41 | * | |
42 | * The correct way to get/use the libsigrok API functions is: | |
43 | * | |
44 | * @code{.c} | |
45 | * #include <libsigrok/libsigrok.h> | |
46 | * @endcode | |
47 | */ | |
48 | ||
49 | /* | |
50 | * All possible return codes of libsigrok functions must be listed here. | |
51 | * Functions should never return hardcoded numbers as status, but rather | |
52 | * use these enum values. All error codes are negative numbers. | |
53 | * | |
54 | * The error codes are globally unique in libsigrok, i.e. if one of the | |
55 | * libsigrok functions returns a "malloc error" it must be exactly the same | |
56 | * return value as used by all other functions to indicate "malloc error". | |
57 | * There must be no functions which indicate two different errors via the | |
58 | * same return code. | |
59 | * | |
60 | * Also, for compatibility reasons, no defined return codes are ever removed | |
61 | * or reused for different errors later. You can only add new entries and | |
62 | * return codes, but never remove or redefine existing ones. | |
63 | */ | |
64 | ||
65 | /** Status/error codes returned by libsigrok functions. */ | |
66 | enum { | |
67 | SR_OK = 0, /**< No error. */ | |
68 | SR_ERR = -1, /**< Generic/unspecified error. */ | |
69 | SR_ERR_MALLOC = -2, /**< Malloc/calloc/realloc error. */ | |
70 | SR_ERR_ARG = -3, /**< Function argument error. */ | |
71 | SR_ERR_BUG = -4, /**< Errors hinting at internal bugs. */ | |
72 | SR_ERR_SAMPLERATE = -5, /**< Incorrect samplerate. */ | |
73 | }; | |
74 | ||
75 | #define SR_MAX_NUM_PROBES 64 /* Limited by uint64_t. */ | |
76 | #define SR_MAX_PROBENAME_LEN 32 | |
77 | ||
78 | /* Handy little macros */ | |
79 | #define SR_HZ(n) (n) | |
80 | #define SR_KHZ(n) ((n) * 1000) | |
81 | #define SR_MHZ(n) ((n) * 1000000) | |
82 | #define SR_GHZ(n) ((n) * 1000000000) | |
83 | ||
84 | #define SR_HZ_TO_NS(n) (1000000000 / (n)) | |
85 | ||
86 | /** libsigrok loglevels. */ | |
87 | enum { | |
88 | SR_LOG_NONE = 0, /**< Output no messages at all. */ | |
89 | SR_LOG_ERR = 1, /**< Output error messages. */ | |
90 | SR_LOG_WARN = 2, /**< Output warnings. */ | |
91 | SR_LOG_INFO = 3, /**< Output informational messages. */ | |
92 | SR_LOG_DBG = 4, /**< Output debug messages. */ | |
93 | SR_LOG_SPEW = 5, /**< Output very noisy debug messages. */ | |
94 | }; | |
95 | ||
96 | /* | |
97 | * Use SR_API to mark public API symbols, and SR_PRIV for private symbols. | |
98 | * | |
99 | * Variables and functions marked 'static' are private already and don't | |
100 | * need SR_PRIV. However, functions which are not static (because they need | |
101 | * to be used in other libsigrok-internal files) but are also not meant to | |
102 | * be part of the public libsigrok API, must use SR_PRIV. | |
103 | * | |
104 | * This uses the 'visibility' feature of gcc (requires gcc >= 4.0). | |
105 | * | |
106 | * This feature is not available on MinGW/Windows, as it is a feature of | |
107 | * ELF files and MinGW/Windows uses PE files. | |
108 | * | |
109 | * Details: http://gcc.gnu.org/wiki/Visibility | |
110 | */ | |
111 | ||
112 | /* Marks public libsigrok API symbols. */ | |
113 | #ifndef _WIN32 | |
114 | #define SR_API __attribute__((visibility("default"))) | |
115 | #else | |
116 | #define SR_API | |
117 | #endif | |
118 | ||
119 | /* Marks private, non-public libsigrok symbols (not part of the API). */ | |
120 | #ifndef _WIN32 | |
121 | #define SR_PRIV __attribute__((visibility("hidden"))) | |
122 | #else | |
123 | #define SR_PRIV | |
124 | #endif | |
125 | ||
126 | typedef int (*sr_receive_data_callback_t)(int fd, int revents, void *cb_data); | |
127 | ||
128 | /** Data types used by hardware drivers for dev_config_set(). */ | |
129 | enum { | |
130 | SR_T_UINT64 = 10000, | |
131 | SR_T_CHAR, | |
132 | SR_T_BOOL, | |
133 | SR_T_FLOAT, | |
134 | SR_T_RATIONAL_PERIOD, | |
135 | SR_T_RATIONAL_VOLT, | |
136 | SR_T_KEYVALUE, | |
137 | }; | |
138 | ||
139 | /** Rational number data type, containing numerator and denominator values. */ | |
140 | struct sr_rational { | |
141 | /** Numerator of the rational number. */ | |
142 | uint64_t p; | |
143 | /** Denominator of the rational number. */ | |
144 | uint64_t q; | |
145 | }; | |
146 | ||
147 | /** Value for sr_datafeed_packet.type. */ | |
148 | enum { | |
149 | SR_DF_HEADER = 10000, | |
150 | SR_DF_END, | |
151 | SR_DF_TRIGGER, | |
152 | SR_DF_LOGIC, | |
153 | SR_DF_META_LOGIC, | |
154 | SR_DF_ANALOG, | |
155 | SR_DF_META_ANALOG, | |
156 | SR_DF_FRAME_BEGIN, | |
157 | SR_DF_FRAME_END, | |
158 | }; | |
159 | ||
160 | /** Values for sr_datafeed_analog.mq. */ | |
161 | enum { | |
162 | SR_MQ_VOLTAGE = 10000, | |
163 | SR_MQ_CURRENT, | |
164 | SR_MQ_RESISTANCE, | |
165 | SR_MQ_CAPACITANCE, | |
166 | SR_MQ_TEMPERATURE, | |
167 | SR_MQ_FREQUENCY, | |
168 | SR_MQ_DUTY_CYCLE, | |
169 | SR_MQ_CONTINUITY, | |
170 | SR_MQ_PULSE_WIDTH, | |
171 | SR_MQ_CONDUCTANCE, | |
172 | /** Electrical power, usually in W, or dBm. */ | |
173 | SR_MQ_POWER, | |
174 | /** Gain (a transistor's gain, or hFE, for example). */ | |
175 | SR_MQ_GAIN, | |
176 | /** Logarithmic representation of sound pressure relative to a | |
177 | * reference value. */ | |
178 | SR_MQ_SOUND_PRESSURE_LEVEL, | |
179 | }; | |
180 | ||
181 | /** Values for sr_datafeed_analog.unit. */ | |
182 | enum { | |
183 | SR_UNIT_VOLT = 10000, | |
184 | SR_UNIT_AMPERE, | |
185 | SR_UNIT_OHM, | |
186 | SR_UNIT_FARAD, | |
187 | SR_UNIT_KELVIN, | |
188 | SR_UNIT_CELSIUS, | |
189 | SR_UNIT_FAHRENHEIT, | |
190 | SR_UNIT_HERTZ, | |
191 | SR_UNIT_PERCENTAGE, | |
192 | SR_UNIT_BOOLEAN, | |
193 | SR_UNIT_SECOND, | |
194 | /** Unit of conductance, the inverse of resistance. */ | |
195 | SR_UNIT_SIEMENS, | |
196 | /** | |
197 | * An absolute measurement of power, in decibels, referenced to | |
198 | * 1 milliwatt (dBu). | |
199 | */ | |
200 | SR_UNIT_DECIBEL_MW, | |
201 | /** Voltage in decibel, referenced to 1 volt (dBV). */ | |
202 | SR_UNIT_DECIBEL_VOLT, | |
203 | /** | |
204 | * Measurements that intrinsically do not have units attached, such | |
205 | * as ratios, gains, etc. Specifically, a transistor's gain (hFE) is | |
206 | * a unitless quantity, for example. | |
207 | */ | |
208 | SR_UNIT_UNITLESS, | |
209 | /** Sound pressure level relative so 20 micropascals. */ | |
210 | SR_UNIT_DECIBEL_SPL, | |
211 | }; | |
212 | ||
213 | /** Values for sr_datafeed_analog.flags. */ | |
214 | enum { | |
215 | /** Voltage measurement is alternating current (AC). */ | |
216 | SR_MQFLAG_AC = 0x01, | |
217 | /** Voltage measurement is direct current (DC). */ | |
218 | SR_MQFLAG_DC = 0x02, | |
219 | /** This is a true RMS measurement. */ | |
220 | SR_MQFLAG_RMS = 0x04, | |
221 | /** Value is voltage drop across a diode, or NAN. */ | |
222 | SR_MQFLAG_DIODE = 0x08, | |
223 | /** Device is in "hold" mode (repeating the last measurement). */ | |
224 | SR_MQFLAG_HOLD = 0x10, | |
225 | /** Device is in "max" mode, only updating upon a new max value. */ | |
226 | SR_MQFLAG_MAX = 0x20, | |
227 | /** Device is in "min" mode, only updating upon a new min value. */ | |
228 | SR_MQFLAG_MIN = 0x40, | |
229 | /** Device is in autoranging mode. */ | |
230 | SR_MQFLAG_AUTORANGE = 0x80, | |
231 | /** Device is in relative mode. */ | |
232 | SR_MQFLAG_RELATIVE = 0x100, | |
233 | /** Sound pressure level is A-weighted in the frequency domain, | |
234 | * according to IEC 61672:2003. */ | |
235 | SR_MQFLAG_SPL_FREQ_WEIGHT_A = 0x200, | |
236 | /** Sound pressure level is C-weighted in the frequency domain, | |
237 | * according to IEC 61672:2003. */ | |
238 | SR_MQFLAG_SPL_FREQ_WEIGHT_C = 0x400, | |
239 | /** Sound pressure level is Z-weighted (i.e. not at all) in the | |
240 | * frequency domain, according to IEC 61672:2003. */ | |
241 | SR_MQFLAG_SPL_FREQ_WEIGHT_Z = 0x800, | |
242 | /** Sound pressure level is not weighted in the frequency domain, | |
243 | * albeit without standards-defined low and high frequency limits. */ | |
244 | SR_MQFLAG_SPL_FREQ_WEIGHT_FLAT = 0x1000, | |
245 | /** Sound pressure level measurement is S-weighted (1s) in the | |
246 | * time domain. */ | |
247 | SR_MQFLAG_SPL_TIME_WEIGHT_S = 0x2000, | |
248 | /** Sound pressure level measurement is F-weighted (125ms) in the | |
249 | * time domain. */ | |
250 | SR_MQFLAG_SPL_TIME_WEIGHT_F = 0x4000, | |
251 | /** Sound pressure level is time-averaged (LAT), also known as | |
252 | * Equivalent Continuous A-weighted Sound Level (LEQ). */ | |
253 | SR_MQFLAG_SPL_LAT = 0x8000, | |
254 | /** Sound pressure level represented as a percentage of measurements | |
255 | * that were over a preset alarm level. */ | |
256 | SR_MQFLAG_SPL_PCT_OVER_ALARM = 0x10000, | |
257 | }; | |
258 | ||
259 | struct sr_context; | |
260 | ||
261 | struct sr_datafeed_packet { | |
262 | uint16_t type; | |
263 | void *payload; | |
264 | }; | |
265 | ||
266 | struct sr_datafeed_header { | |
267 | int feed_version; | |
268 | struct timeval starttime; | |
269 | }; | |
270 | ||
271 | struct sr_datafeed_meta_logic { | |
272 | int num_probes; | |
273 | uint64_t samplerate; | |
274 | }; | |
275 | ||
276 | struct sr_datafeed_logic { | |
277 | uint64_t length; | |
278 | uint16_t unitsize; | |
279 | void *data; | |
280 | }; | |
281 | ||
282 | struct sr_datafeed_meta_analog { | |
283 | int num_probes; | |
284 | }; | |
285 | ||
286 | struct sr_datafeed_analog { | |
287 | int num_samples; | |
288 | /** Measured quantity (voltage, current, temperature, and so on). */ | |
289 | int mq; | |
290 | /** Unit in which the MQ is measured. */ | |
291 | int unit; | |
292 | /** Bitmap with extra information about the MQ. */ | |
293 | uint64_t mqflags; | |
294 | /** The analog value. */ | |
295 | float *data; | |
296 | }; | |
297 | ||
298 | struct sr_input { | |
299 | struct sr_input_format *format; | |
300 | GHashTable *param; | |
301 | struct sr_dev_inst *sdi; | |
302 | void *internal; | |
303 | }; | |
304 | ||
305 | struct sr_input_format { | |
306 | char *id; | |
307 | char *description; | |
308 | int (*format_match) (const char *filename); | |
309 | int (*init) (struct sr_input *in); | |
310 | int (*loadfile) (struct sr_input *in, const char *filename); | |
311 | }; | |
312 | ||
313 | struct sr_output { | |
314 | struct sr_output_format *format; | |
315 | struct sr_dev_inst *sdi; | |
316 | char *param; | |
317 | void *internal; | |
318 | }; | |
319 | ||
320 | struct sr_output_format { | |
321 | char *id; | |
322 | char *description; | |
323 | int df_type; | |
324 | int (*init) (struct sr_output *o); | |
325 | int (*data) (struct sr_output *o, const uint8_t *data_in, | |
326 | uint64_t length_in, uint8_t **data_out, | |
327 | uint64_t *length_out); | |
328 | int (*event) (struct sr_output *o, int event_type, uint8_t **data_out, | |
329 | uint64_t *length_out); | |
330 | GString *(*recv) (struct sr_output *o, const struct sr_dev_inst *sdi, | |
331 | struct sr_datafeed_packet *packet); | |
332 | int (*cleanup) (struct sr_output *o); | |
333 | }; | |
334 | ||
335 | struct sr_datastore { | |
336 | /** Size in bytes of the number of units stored in this datastore. */ | |
337 | int ds_unitsize; | |
338 | unsigned int num_units; /* TODO: uint64_t */ | |
339 | GSList *chunklist; | |
340 | }; | |
341 | ||
342 | /* | |
343 | * This represents a generic device connected to the system. | |
344 | * For device-specific information, ask the driver. The driver_index refers | |
345 | * to the device index within that driver; it may be handling more than one | |
346 | * device. All relevant driver calls take a dev_index parameter for this. | |
347 | */ | |
348 | struct sr_dev { | |
349 | /** Which driver handles this device. */ | |
350 | struct sr_dev_driver *driver; | |
351 | /** A driver may handle multiple devices of the same type. */ | |
352 | int driver_index; | |
353 | /** List of struct sr_probe pointers. */ | |
354 | GSList *probes; | |
355 | /** Data acquired by this device, if any. */ | |
356 | struct sr_datastore *datastore; | |
357 | }; | |
358 | ||
359 | enum { | |
360 | SR_PROBE_LOGIC = 10000, | |
361 | SR_PROBE_ANALOG, | |
362 | }; | |
363 | ||
364 | struct sr_probe { | |
365 | int index; | |
366 | int type; | |
367 | gboolean enabled; | |
368 | char *name; | |
369 | char *trigger; | |
370 | }; | |
371 | ||
372 | struct sr_hwopt { | |
373 | int hwopt; | |
374 | const void *value; | |
375 | }; | |
376 | ||
377 | /** Hardware driver options. */ | |
378 | enum { | |
379 | /** | |
380 | * Some drivers cannot detect the exact model they're talking to | |
381 | * (may be phased out). | |
382 | */ | |
383 | SR_HWOPT_MODEL = 10000, | |
384 | ||
385 | /** | |
386 | * Specification on how to connect to a device. | |
387 | * | |
388 | * In combination with SR_HWOPT_SERIALCOMM, this is a serial port in | |
389 | * the form which makes sense to the OS (e.g., /dev/ttyS0). | |
390 | * Otherwise this specifies a USB device, either in the form of | |
391 | * @verbatim <bus>.<address> @endverbatim (decimal, e.g. 1.65) or | |
392 | * @verbatim <vendorid>.<productid> @endverbatim | |
393 | * (hexadecimal, e.g. 1d6b.0001). | |
394 | */ | |
395 | SR_HWOPT_CONN, | |
396 | ||
397 | /** | |
398 | * Serial communication specification, in the form: | |
399 | * | |
400 | * @verbatim <baudrate>/<databits><parity><stopbits> @endverbatim | |
401 | * | |
402 | * Example: 9600/8n1 | |
403 | * | |
404 | * This is always an optional parameter, since a driver typically | |
405 | * knows the speed at which the device wants to communicate. | |
406 | */ | |
407 | SR_HWOPT_SERIALCOMM, | |
408 | }; | |
409 | ||
410 | /** Hardware device capabilities. */ | |
411 | enum { | |
412 | /*--- Device classes ------------------------------------------------*/ | |
413 | ||
414 | /** The device can act as logic analyzer. */ | |
415 | SR_HWCAP_LOGIC_ANALYZER = 10000, | |
416 | ||
417 | /** The device can act as an oscilloscope. */ | |
418 | SR_HWCAP_OSCILLOSCOPE, | |
419 | ||
420 | /** The device can act as a multimeter. */ | |
421 | SR_HWCAP_MULTIMETER, | |
422 | ||
423 | /** The device is a demo device. */ | |
424 | SR_HWCAP_DEMO_DEV, | |
425 | ||
426 | /** The device can act as a sound level meter. */ | |
427 | SR_HWCAP_SOUNDLEVELMETER, | |
428 | ||
429 | /*--- Device configuration ------------------------------------------*/ | |
430 | ||
431 | /** The device supports setting/changing its samplerate. */ | |
432 | SR_HWCAP_SAMPLERATE = 20000, | |
433 | ||
434 | /** The device supports setting a pre/post-trigger capture ratio. */ | |
435 | SR_HWCAP_CAPTURE_RATIO, | |
436 | ||
437 | /* TODO? */ | |
438 | /** The device supports setting a pattern (pattern generator mode). */ | |
439 | SR_HWCAP_PATTERN_MODE, | |
440 | ||
441 | /** The device supports Run Length Encoding. */ | |
442 | SR_HWCAP_RLE, | |
443 | ||
444 | /** The device supports setting trigger slope. */ | |
445 | SR_HWCAP_TRIGGER_SLOPE, | |
446 | ||
447 | /** Trigger source. */ | |
448 | SR_HWCAP_TRIGGER_SOURCE, | |
449 | ||
450 | /** Horizontal trigger position. */ | |
451 | SR_HWCAP_HORIZ_TRIGGERPOS, | |
452 | ||
453 | /** Buffer size. */ | |
454 | SR_HWCAP_BUFFERSIZE, | |
455 | ||
456 | /** Time base. */ | |
457 | SR_HWCAP_TIMEBASE, | |
458 | ||
459 | /** Filter. */ | |
460 | SR_HWCAP_FILTER, | |
461 | ||
462 | /** Volts/div. */ | |
463 | SR_HWCAP_VDIV, | |
464 | ||
465 | /** Coupling. */ | |
466 | SR_HWCAP_COUPLING, | |
467 | ||
468 | /*--- Special stuff -------------------------------------------------*/ | |
469 | ||
470 | /** Session filename. */ | |
471 | SR_HWCAP_SESSIONFILE = 30000, | |
472 | ||
473 | /* TODO: Better description. */ | |
474 | /** The device supports specifying a capturefile to inject. */ | |
475 | SR_HWCAP_CAPTUREFILE, | |
476 | ||
477 | /* TODO: Better description. */ | |
478 | /** The device supports specifying the capturefile unit size. */ | |
479 | SR_HWCAP_CAPTURE_UNITSIZE, | |
480 | ||
481 | /* TODO: Better description. */ | |
482 | /** The device supports setting the number of probes. */ | |
483 | SR_HWCAP_CAPTURE_NUM_PROBES, | |
484 | ||
485 | /*--- Acquisition modes ---------------------------------------------*/ | |
486 | ||
487 | /** | |
488 | * The device supports setting a sample time limit (how long | |
489 | * the sample acquisition should run, in ms). | |
490 | */ | |
491 | SR_HWCAP_LIMIT_MSEC = 40000, | |
492 | ||
493 | /** | |
494 | * The device supports setting a sample number limit (how many | |
495 | * samples should be acquired). | |
496 | */ | |
497 | SR_HWCAP_LIMIT_SAMPLES, | |
498 | ||
499 | /** | |
500 | * The device supports setting a frame limit (how many | |
501 | * frames should be acquired). | |
502 | */ | |
503 | SR_HWCAP_LIMIT_FRAMES, | |
504 | ||
505 | /** | |
506 | * The device supports continuous sampling. Neither a time limit | |
507 | * nor a sample number limit has to be supplied, it will just acquire | |
508 | * samples continuously, until explicitly stopped by a certain command. | |
509 | */ | |
510 | SR_HWCAP_CONTINUOUS, | |
511 | }; | |
512 | ||
513 | struct sr_hwcap_option { | |
514 | int hwcap; | |
515 | int type; | |
516 | char *description; | |
517 | char *shortname; | |
518 | }; | |
519 | ||
520 | struct sr_dev_inst { | |
521 | struct sr_dev_driver *driver; | |
522 | int index; | |
523 | int status; | |
524 | int inst_type; | |
525 | char *vendor; | |
526 | char *model; | |
527 | char *version; | |
528 | GSList *probes; | |
529 | void *priv; | |
530 | }; | |
531 | ||
532 | /** Types of device instances (sr_dev_inst). */ | |
533 | enum { | |
534 | /** Device instance type for USB devices. */ | |
535 | SR_INST_USB = 10000, | |
536 | /** Device instance type for serial port devices. */ | |
537 | SR_INST_SERIAL, | |
538 | }; | |
539 | ||
540 | /** Device instance status. */ | |
541 | enum { | |
542 | /** The device instance was not found. */ | |
543 | SR_ST_NOT_FOUND = 10000, | |
544 | /** The device instance was found, but is still booting. */ | |
545 | SR_ST_INITIALIZING, | |
546 | /** The device instance is live, but not in use. */ | |
547 | SR_ST_INACTIVE, | |
548 | /** The device instance is actively in use in a session. */ | |
549 | SR_ST_ACTIVE, | |
550 | /** The device is winding down its session. */ | |
551 | SR_ST_STOPPING, | |
552 | }; | |
553 | ||
554 | /* | |
555 | * TODO: This sucks, you just kinda have to "know" the returned type. | |
556 | * TODO: Need a DI to return the number of trigger stages supported. | |
557 | */ | |
558 | ||
559 | /** Device info IDs. */ | |
560 | enum { | |
561 | /** A list of options supported by the driver. */ | |
562 | SR_DI_HWOPTS = 10000, | |
563 | /** A list of capabilities supported by the device. */ | |
564 | SR_DI_HWCAPS, | |
565 | /** The number of probes connected to this device. */ | |
566 | SR_DI_NUM_PROBES, | |
567 | /** The probe names on this device. */ | |
568 | SR_DI_PROBE_NAMES, | |
569 | /** Samplerates supported by this device (struct sr_samplerates). */ | |
570 | SR_DI_SAMPLERATES, | |
571 | /** Types of logic trigger supported, out of "01crf" (char *). */ | |
572 | SR_DI_TRIGGER_TYPES, | |
573 | /** The currently set samplerate in Hz (uint64_t). */ | |
574 | SR_DI_CUR_SAMPLERATE, | |
575 | /** Supported patterns (in pattern generator mode). */ | |
576 | SR_DI_PATTERNS, | |
577 | /** Supported buffer sizes. */ | |
578 | SR_DI_BUFFERSIZES, | |
579 | /** Supported time bases. */ | |
580 | SR_DI_TIMEBASES, | |
581 | /** Supported trigger sources. */ | |
582 | SR_DI_TRIGGER_SOURCES, | |
583 | /** Supported filter targets. */ | |
584 | SR_DI_FILTERS, | |
585 | /** Valid volts/div values. */ | |
586 | SR_DI_VDIVS, | |
587 | /** Coupling options. */ | |
588 | SR_DI_COUPLING, | |
589 | }; | |
590 | ||
591 | /* | |
592 | * A device supports either a range of samplerates with steps of a given | |
593 | * granularity, or is limited to a set of defined samplerates. Use either | |
594 | * step or list, but not both. | |
595 | */ | |
596 | struct sr_samplerates { | |
597 | uint64_t low; | |
598 | uint64_t high; | |
599 | uint64_t step; | |
600 | const uint64_t *list; | |
601 | }; | |
602 | ||
603 | struct sr_dev_driver { | |
604 | /* Driver-specific */ | |
605 | char *name; | |
606 | char *longname; | |
607 | int api_version; | |
608 | int (*init) (void); | |
609 | int (*cleanup) (void); | |
610 | GSList *(*scan) (GSList *options); | |
611 | GSList *(*dev_list) (void); | |
612 | int (*dev_clear) (void); | |
613 | ||
614 | /* Device-specific */ | |
615 | int (*dev_open) (struct sr_dev_inst *sdi); | |
616 | int (*dev_close) (struct sr_dev_inst *sdi); | |
617 | int (*info_get) (int info_id, const void **data, | |
618 | const struct sr_dev_inst *sdi); | |
619 | int (*dev_config_set) (const struct sr_dev_inst *sdi, int hwcap, | |
620 | const void *value); | |
621 | int (*dev_acquisition_start) (const struct sr_dev_inst *sdi, | |
622 | void *cb_data); | |
623 | int (*dev_acquisition_stop) (struct sr_dev_inst *sdi, | |
624 | void *cb_data); | |
625 | ||
626 | /* Dynamic */ | |
627 | void *priv; | |
628 | }; | |
629 | ||
630 | struct sr_session { | |
631 | /** List of struct sr_dev pointers. */ | |
632 | GSList *devs; | |
633 | /** List of sr_receive_data_callback_t items. */ | |
634 | GSList *datafeed_callbacks; | |
635 | GTimeVal starttime; | |
636 | ||
637 | unsigned int num_sources; | |
638 | ||
639 | /* | |
640 | * Both "sources" and "pollfds" are of the same size and contain pairs | |
641 | * of descriptor and callback function. We can not embed the GPollFD | |
642 | * into the source struct since we want to be able to pass the array | |
643 | * of all poll descriptors to g_poll(). | |
644 | */ | |
645 | struct source *sources; | |
646 | GPollFD *pollfds; | |
647 | int source_timeout; | |
648 | }; | |
649 | ||
650 | #include "proto.h" | |
651 | #include "version.h" | |
652 | ||
653 | #ifdef __cplusplus | |
654 | } | |
655 | #endif | |
656 | ||
657 | #endif |