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1 | /* | |
2 | * This file is part of the libsigrokdecode project. | |
3 | * | |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include "libsigrokdecode.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */ | |
22 | #include "libsigrokdecode-internal.h" | |
23 | #include "config.h" | |
24 | #include <glib.h> | |
25 | #include <inttypes.h> | |
26 | #include <stdlib.h> | |
27 | #include <stdint.h> | |
28 | ||
29 | /** @cond PRIVATE */ | |
30 | ||
31 | extern GSList *sessions; | |
32 | ||
33 | /* type_logic.c */ | |
34 | extern SRD_PRIV PyTypeObject srd_logic_type; | |
35 | ||
36 | /** @endcond */ | |
37 | ||
38 | /** | |
39 | * @file | |
40 | * | |
41 | * Decoder instance handling. | |
42 | */ | |
43 | ||
44 | /** | |
45 | * @defgroup grp_instances Decoder instances | |
46 | * | |
47 | * Decoder instance handling. | |
48 | * | |
49 | * @{ | |
50 | */ | |
51 | ||
52 | /** | |
53 | * Set one or more options in a decoder instance. | |
54 | * | |
55 | * Handled options are removed from the hash. | |
56 | * | |
57 | * @param di Decoder instance. | |
58 | * @param options A GHashTable of options to set. | |
59 | * | |
60 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
61 | * | |
62 | * @since 0.1.0 | |
63 | */ | |
64 | SRD_API int srd_inst_option_set(struct srd_decoder_inst *di, | |
65 | GHashTable *options) | |
66 | { | |
67 | struct srd_decoder_option *sdo; | |
68 | PyObject *py_di_options, *py_optval; | |
69 | GVariant *value; | |
70 | GSList *l; | |
71 | double val_double; | |
72 | gint64 val_int; | |
73 | int ret; | |
74 | const char *val_str; | |
75 | ||
76 | if (!di) { | |
77 | srd_err("Invalid decoder instance."); | |
78 | return SRD_ERR_ARG; | |
79 | } | |
80 | ||
81 | if (!options) { | |
82 | srd_err("Invalid options GHashTable."); | |
83 | return SRD_ERR_ARG; | |
84 | } | |
85 | ||
86 | if (!PyObject_HasAttrString(di->decoder->py_dec, "options")) { | |
87 | /* Decoder has no options. */ | |
88 | if (g_hash_table_size(options) == 0) { | |
89 | /* No options provided. */ | |
90 | return SRD_OK; | |
91 | } else { | |
92 | srd_err("Protocol decoder has no options."); | |
93 | return SRD_ERR_ARG; | |
94 | } | |
95 | return SRD_OK; | |
96 | } | |
97 | ||
98 | ret = SRD_ERR_PYTHON; | |
99 | py_optval = NULL; | |
100 | ||
101 | /* | |
102 | * The 'options' tuple is a class variable, but we need to | |
103 | * change it. Changing it directly will affect the entire class, | |
104 | * so we need to create a new object for it, and populate that | |
105 | * instead. | |
106 | */ | |
107 | if (!(py_di_options = PyObject_GetAttrString(di->py_inst, "options"))) | |
108 | goto err_out; | |
109 | Py_DECREF(py_di_options); | |
110 | py_di_options = PyDict_New(); | |
111 | PyObject_SetAttrString(di->py_inst, "options", py_di_options); | |
112 | ||
113 | for (l = di->decoder->options; l; l = l->next) { | |
114 | sdo = l->data; | |
115 | if ((value = g_hash_table_lookup(options, sdo->id))) { | |
116 | /* A value was supplied for this option. */ | |
117 | if (!g_variant_type_equal(g_variant_get_type(value), | |
118 | g_variant_get_type(sdo->def))) { | |
119 | srd_err("Option '%s' should have the same type " | |
120 | "as the default value.", sdo->id); | |
121 | goto err_out; | |
122 | } | |
123 | } else { | |
124 | /* Use default for this option. */ | |
125 | value = sdo->def; | |
126 | } | |
127 | if (g_variant_is_of_type(value, G_VARIANT_TYPE_STRING)) { | |
128 | val_str = g_variant_get_string(value, NULL); | |
129 | if (!(py_optval = PyUnicode_FromString(val_str))) { | |
130 | /* Some UTF-8 encoding error. */ | |
131 | PyErr_Clear(); | |
132 | srd_err("Option '%s' requires a UTF-8 string value.", sdo->id); | |
133 | goto err_out; | |
134 | } | |
135 | } else if (g_variant_is_of_type(value, G_VARIANT_TYPE_INT64)) { | |
136 | val_int = g_variant_get_int64(value); | |
137 | if (!(py_optval = PyLong_FromLong(val_int))) { | |
138 | /* ValueError Exception */ | |
139 | PyErr_Clear(); | |
140 | srd_err("Option '%s' has invalid integer value.", sdo->id); | |
141 | goto err_out; | |
142 | } | |
143 | } else if (g_variant_is_of_type(value, G_VARIANT_TYPE_DOUBLE)) { | |
144 | val_double = g_variant_get_double(value); | |
145 | if (!(py_optval = PyFloat_FromDouble(val_double))) { | |
146 | /* ValueError Exception */ | |
147 | PyErr_Clear(); | |
148 | srd_err("Option '%s' has invalid float value.", sdo->id); | |
149 | goto err_out; | |
150 | } | |
151 | } | |
152 | if (PyDict_SetItemString(py_di_options, sdo->id, py_optval) == -1) | |
153 | goto err_out; | |
154 | /* Not harmful even if we used the default. */ | |
155 | g_hash_table_remove(options, sdo->id); | |
156 | } | |
157 | if (g_hash_table_size(options) != 0) | |
158 | srd_warn("Unknown options specified for '%s'", di->inst_id); | |
159 | ||
160 | ret = SRD_OK; | |
161 | ||
162 | err_out: | |
163 | Py_XDECREF(py_optval); | |
164 | if (PyErr_Occurred()) { | |
165 | srd_exception_catch("Stray exception in srd_inst_option_set()."); | |
166 | ret = SRD_ERR_PYTHON; | |
167 | } | |
168 | ||
169 | return ret; | |
170 | } | |
171 | ||
172 | /* Helper GComparefunc for g_slist_find_custom() in srd_inst_probe_set_all() */ | |
173 | static gint compare_probe_id(const struct srd_probe *a, const char *probe_id) | |
174 | { | |
175 | return strcmp(a->id, probe_id); | |
176 | } | |
177 | ||
178 | /** | |
179 | * Set all probes in a decoder instance. | |
180 | * | |
181 | * This function sets _all_ probes for the specified decoder instance, i.e., | |
182 | * it overwrites any probes that were already defined (if any). | |
183 | * | |
184 | * @param di Decoder instance. | |
185 | * @param new_probes A GHashTable of probes to set. Key is probe name, value is | |
186 | * the probe number. Samples passed to this instance will be | |
187 | * arranged in this order. | |
188 | * @param unit_size Number of bytes per sample in the data stream to be passed | |
189 | * to the decoder. The highest probe index specified in the | |
190 | * probe map must lie within a sample unit. | |
191 | * | |
192 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
193 | * | |
194 | * @since 0.1.0 | |
195 | */ | |
196 | SRD_API int srd_inst_probe_set_all(struct srd_decoder_inst *di, | |
197 | GHashTable *new_probes, int unit_size) | |
198 | { | |
199 | GVariant *probe_val; | |
200 | GList *l; | |
201 | GSList *sl; | |
202 | struct srd_probe *p; | |
203 | int *new_probemap, new_probenum, num_required_probes, i; | |
204 | char *probe_id; | |
205 | ||
206 | srd_dbg("set probes called for instance %s with list of %d probes", | |
207 | di->inst_id, g_hash_table_size(new_probes)); | |
208 | ||
209 | if (g_hash_table_size(new_probes) == 0) | |
210 | /* No probes provided. */ | |
211 | return SRD_OK; | |
212 | ||
213 | if (di->dec_num_probes == 0) { | |
214 | /* Decoder has no probes. */ | |
215 | srd_err("Protocol decoder %s has no probes to define.", | |
216 | di->decoder->name); | |
217 | return SRD_ERR_ARG; | |
218 | } | |
219 | ||
220 | new_probemap = NULL; | |
221 | ||
222 | if (!(new_probemap = g_try_malloc(sizeof(int) * di->dec_num_probes))) { | |
223 | srd_err("Failed to g_malloc() new probe map."); | |
224 | return SRD_ERR_MALLOC; | |
225 | } | |
226 | ||
227 | /* | |
228 | * For now, map all indexes to probe -1 (can be overridden later). | |
229 | * This -1 is interpreted as an unspecified probe later. | |
230 | */ | |
231 | for (i = 0; i < di->dec_num_probes; i++) | |
232 | new_probemap[i] = -1; | |
233 | ||
234 | for (l = g_hash_table_get_keys(new_probes); l; l = l->next) { | |
235 | probe_id = l->data; | |
236 | probe_val = g_hash_table_lookup(new_probes, probe_id); | |
237 | if (!g_variant_is_of_type(probe_val, G_VARIANT_TYPE_INT32)) { | |
238 | /* Probe name was specified without a value. */ | |
239 | srd_err("No probe number was specified for %s.", | |
240 | probe_id); | |
241 | g_free(new_probemap); | |
242 | return SRD_ERR_ARG; | |
243 | } | |
244 | new_probenum = g_variant_get_int32(probe_val); | |
245 | if (new_probenum >= 8 * unit_size) { | |
246 | srd_err("Probe index %d not within data unit (%d bit).", | |
247 | new_probenum, 8 * unit_size); | |
248 | g_free(new_probemap); | |
249 | return SRD_ERR_ARG; | |
250 | } | |
251 | if (!(sl = g_slist_find_custom(di->decoder->probes, probe_id, | |
252 | (GCompareFunc)compare_probe_id))) { | |
253 | /* Fall back on optional probes. */ | |
254 | if (!(sl = g_slist_find_custom(di->decoder->opt_probes, | |
255 | probe_id, (GCompareFunc) compare_probe_id))) { | |
256 | srd_err("Protocol decoder %s has no probe " | |
257 | "'%s'.", di->decoder->name, probe_id); | |
258 | g_free(new_probemap); | |
259 | return SRD_ERR_ARG; | |
260 | } | |
261 | } | |
262 | p = sl->data; | |
263 | new_probemap[p->order] = new_probenum; | |
264 | srd_dbg("Setting probe mapping: %s (index %d) = probe %d.", | |
265 | p->id, p->order, new_probenum); | |
266 | } | |
267 | di->data_unitsize = unit_size; | |
268 | ||
269 | srd_dbg("Final probe map:"); | |
270 | num_required_probes = g_slist_length(di->decoder->probes); | |
271 | for (i = 0; i < di->dec_num_probes; i++) { | |
272 | srd_dbg(" - index %d = probe %d (%s)", i, new_probemap[i], | |
273 | (i < num_required_probes) ? "required" : "optional"); | |
274 | } | |
275 | ||
276 | /* Report an error if not all required probes were specified. */ | |
277 | for (i = 0; i < num_required_probes; i++) { | |
278 | if (new_probemap[i] != -1) | |
279 | continue; | |
280 | p = g_slist_nth(di->decoder->probes, i)->data; | |
281 | srd_err("Required probe '%s' (index %d) was not specified.", | |
282 | p->id, i); | |
283 | return SRD_ERR; | |
284 | } | |
285 | ||
286 | g_free(di->dec_probemap); | |
287 | di->dec_probemap = new_probemap; | |
288 | ||
289 | return SRD_OK; | |
290 | } | |
291 | ||
292 | /** | |
293 | * Create a new protocol decoder instance. | |
294 | * | |
295 | * @param sess The session holding the protocol decoder instance. | |
296 | * @param decoder_id Decoder 'id' field. | |
297 | * @param options GHashtable of options which override the defaults set in | |
298 | * the decoder class. May be NULL. | |
299 | * | |
300 | * @return Pointer to a newly allocated struct srd_decoder_inst, or | |
301 | * NULL in case of failure. | |
302 | * | |
303 | * @since 0.3.0 | |
304 | */ | |
305 | SRD_API struct srd_decoder_inst *srd_inst_new(struct srd_session *sess, | |
306 | const char *decoder_id, GHashTable *options) | |
307 | { | |
308 | int i; | |
309 | struct srd_decoder *dec; | |
310 | struct srd_decoder_inst *di; | |
311 | char *inst_id; | |
312 | ||
313 | srd_dbg("Creating new %s instance.", decoder_id); | |
314 | ||
315 | if (session_is_valid(sess) != SRD_OK) { | |
316 | srd_err("Invalid session."); | |
317 | return NULL; | |
318 | } | |
319 | ||
320 | if (!(dec = srd_decoder_get_by_id(decoder_id))) { | |
321 | srd_err("Protocol decoder %s not found.", decoder_id); | |
322 | return NULL; | |
323 | } | |
324 | ||
325 | if (!(di = g_try_malloc0(sizeof(struct srd_decoder_inst)))) { | |
326 | srd_err("Failed to g_malloc() instance."); | |
327 | return NULL; | |
328 | } | |
329 | ||
330 | di->decoder = dec; | |
331 | di->sess = sess; | |
332 | if (options) { | |
333 | inst_id = g_hash_table_lookup(options, "id"); | |
334 | di->inst_id = g_strdup(inst_id ? inst_id : decoder_id); | |
335 | g_hash_table_remove(options, "id"); | |
336 | } else | |
337 | di->inst_id = g_strdup(decoder_id); | |
338 | ||
339 | /* | |
340 | * Prepare a default probe map, where samples come in the | |
341 | * order in which the decoder class defined them. | |
342 | */ | |
343 | di->dec_num_probes = g_slist_length(di->decoder->probes) + | |
344 | g_slist_length(di->decoder->opt_probes); | |
345 | if (di->dec_num_probes) { | |
346 | if (!(di->dec_probemap = | |
347 | g_try_malloc(sizeof(int) * di->dec_num_probes))) { | |
348 | srd_err("Failed to g_malloc() probe map."); | |
349 | g_free(di); | |
350 | return NULL; | |
351 | } | |
352 | for (i = 0; i < di->dec_num_probes; i++) | |
353 | di->dec_probemap[i] = i; | |
354 | di->data_unitsize = (di->dec_num_probes + 7) / 8; | |
355 | /* | |
356 | * Will be used to prepare a sample at every iteration | |
357 | * of the instance's decode() method. | |
358 | */ | |
359 | if (!(di->probe_samples = g_try_malloc(di->dec_num_probes))) { | |
360 | srd_err("Failed to g_malloc() sample buffer."); | |
361 | g_free(di->dec_probemap); | |
362 | g_free(di); | |
363 | return NULL; | |
364 | } | |
365 | } | |
366 | ||
367 | /* Create a new instance of this decoder class. */ | |
368 | if (!(di->py_inst = PyObject_CallObject(dec->py_dec, NULL))) { | |
369 | if (PyErr_Occurred()) | |
370 | srd_exception_catch("failed to create %s instance: ", | |
371 | decoder_id); | |
372 | g_free(di->dec_probemap); | |
373 | g_free(di); | |
374 | return NULL; | |
375 | } | |
376 | ||
377 | if (options && srd_inst_option_set(di, options) != SRD_OK) { | |
378 | g_free(di->dec_probemap); | |
379 | g_free(di); | |
380 | return NULL; | |
381 | } | |
382 | ||
383 | /* Instance takes input from a frontend by default. */ | |
384 | sess->di_list = g_slist_append(sess->di_list, di); | |
385 | ||
386 | return di; | |
387 | } | |
388 | ||
389 | /** | |
390 | * Stack a decoder instance on top of another. | |
391 | * | |
392 | * @param sess The session holding the protocol decoder instances. | |
393 | * @param di_bottom The instance on top of which di_top will be stacked. | |
394 | * @param di_top The instance to go on top. | |
395 | * | |
396 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
397 | * | |
398 | * @since 0.3.0 | |
399 | */ | |
400 | SRD_API int srd_inst_stack(struct srd_session *sess, | |
401 | struct srd_decoder_inst *di_bottom, | |
402 | struct srd_decoder_inst *di_top) | |
403 | { | |
404 | ||
405 | if (session_is_valid(sess) != SRD_OK) { | |
406 | srd_err("Invalid session."); | |
407 | return SRD_ERR_ARG; | |
408 | } | |
409 | ||
410 | if (!di_bottom || !di_top) { | |
411 | srd_err("Invalid from/to instance pair."); | |
412 | return SRD_ERR_ARG; | |
413 | } | |
414 | ||
415 | if (g_slist_find(sess->di_list, di_top)) { | |
416 | /* Remove from the unstacked list. */ | |
417 | sess->di_list = g_slist_remove(sess->di_list, di_top); | |
418 | } | |
419 | ||
420 | /* Stack on top of source di. */ | |
421 | di_bottom->next_di = g_slist_append(di_bottom->next_di, di_top); | |
422 | ||
423 | srd_dbg("Stacked %s on top of %s.", di_top->inst_id, di_bottom->inst_id); | |
424 | ||
425 | return SRD_OK; | |
426 | } | |
427 | ||
428 | /** | |
429 | * Find a decoder instance by its instance ID. | |
430 | * | |
431 | * Only the bottom level of instances are searched -- instances already stacked | |
432 | * on top of another one will not be found. | |
433 | * | |
434 | * @param sess The session holding the protocol decoder instance. | |
435 | * @param inst_id The instance ID to be found. | |
436 | * | |
437 | * @return Pointer to struct srd_decoder_inst, or NULL if not found. | |
438 | * | |
439 | * @since 0.3.0 | |
440 | */ | |
441 | SRD_API struct srd_decoder_inst *srd_inst_find_by_id(struct srd_session *sess, | |
442 | const char *inst_id) | |
443 | { | |
444 | GSList *l; | |
445 | struct srd_decoder_inst *tmp, *di; | |
446 | ||
447 | if (session_is_valid(sess) != SRD_OK) { | |
448 | srd_err("Invalid session."); | |
449 | return NULL; | |
450 | } | |
451 | ||
452 | di = NULL; | |
453 | for (l = sess->di_list; l; l = l->next) { | |
454 | tmp = l->data; | |
455 | if (!strcmp(tmp->inst_id, inst_id)) { | |
456 | di = tmp; | |
457 | break; | |
458 | } | |
459 | } | |
460 | ||
461 | return di; | |
462 | } | |
463 | ||
464 | static struct srd_decoder_inst *srd_sess_inst_find_by_obj( | |
465 | struct srd_session *sess, const GSList *stack, | |
466 | const PyObject *obj) | |
467 | { | |
468 | const GSList *l; | |
469 | struct srd_decoder_inst *tmp, *di; | |
470 | ||
471 | if (session_is_valid(sess) != SRD_OK) { | |
472 | srd_err("Invalid session."); | |
473 | return NULL; | |
474 | } | |
475 | ||
476 | di = NULL; | |
477 | for (l = stack ? stack : sess->di_list; di == NULL && l != NULL; l = l->next) { | |
478 | tmp = l->data; | |
479 | if (tmp->py_inst == obj) | |
480 | di = tmp; | |
481 | else if (tmp->next_di) | |
482 | di = srd_sess_inst_find_by_obj(sess, tmp->next_di, obj); | |
483 | } | |
484 | ||
485 | return di; | |
486 | } | |
487 | ||
488 | /** | |
489 | * Find a decoder instance by its Python object. | |
490 | * | |
491 | * I.e. find that instance's instantiation of the sigrokdecode.Decoder class. | |
492 | * This will recurse to find the instance anywhere in the stack tree of all | |
493 | * sessions. | |
494 | * | |
495 | * @param stack Pointer to a GSList of struct srd_decoder_inst, indicating the | |
496 | * stack to search. To start searching at the bottom level of | |
497 | * decoder instances, pass NULL. | |
498 | * @param obj The Python class instantiation. | |
499 | * | |
500 | * @return Pointer to struct srd_decoder_inst, or NULL if not found. | |
501 | * | |
502 | * @private | |
503 | * | |
504 | * @since 0.1.0 | |
505 | */ | |
506 | SRD_PRIV struct srd_decoder_inst *srd_inst_find_by_obj(const GSList *stack, | |
507 | const PyObject *obj) | |
508 | { | |
509 | struct srd_decoder_inst *di; | |
510 | struct srd_session *sess; | |
511 | GSList *l; | |
512 | ||
513 | di = NULL; | |
514 | for (l = sessions; di == NULL && l != NULL; l = l->next) { | |
515 | sess = l->data; | |
516 | di = srd_sess_inst_find_by_obj(sess, stack, obj); | |
517 | } | |
518 | ||
519 | return di; | |
520 | } | |
521 | ||
522 | /** @private */ | |
523 | SRD_PRIV int srd_inst_start(struct srd_decoder_inst *di) | |
524 | { | |
525 | PyObject *py_res; | |
526 | GSList *l; | |
527 | struct srd_decoder_inst *next_di; | |
528 | int ret; | |
529 | ||
530 | srd_dbg("Calling start() method on protocol decoder instance %s.", | |
531 | di->inst_id); | |
532 | ||
533 | if (!(py_res = PyObject_CallMethod(di->py_inst, "start", NULL))) { | |
534 | srd_exception_catch("Protocol decoder instance %s: ", | |
535 | di->inst_id); | |
536 | return SRD_ERR_PYTHON; | |
537 | } | |
538 | Py_DecRef(py_res); | |
539 | ||
540 | /* Start all the PDs stacked on top of this one. */ | |
541 | for (l = di->next_di; l; l = l->next) { | |
542 | next_di = l->data; | |
543 | if ((ret = srd_inst_start(next_di)) != SRD_OK) | |
544 | return ret; | |
545 | } | |
546 | ||
547 | return SRD_OK; | |
548 | } | |
549 | ||
550 | /** | |
551 | * Run the specified decoder function. | |
552 | * | |
553 | * @param di The decoder instance to call. Must not be NULL. | |
554 | * @param start_samplenum The starting sample number for the buffer's sample | |
555 | * set, relative to the start of capture. | |
556 | * @param end_samplenum The ending sample number for the buffer's sample | |
557 | * set, relative to the start of capture. | |
558 | * @param inbuf The buffer to decode. Must not be NULL. | |
559 | * @param inbuflen Length of the buffer. Must be > 0. | |
560 | * | |
561 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
562 | * | |
563 | * @private | |
564 | * | |
565 | * @since 0.1.0 | |
566 | */ | |
567 | SRD_PRIV int srd_inst_decode(const struct srd_decoder_inst *di, | |
568 | uint64_t start_samplenum, uint64_t end_samplenum, | |
569 | const uint8_t *inbuf, uint64_t inbuflen) | |
570 | { | |
571 | PyObject *py_res; | |
572 | srd_logic *logic; | |
573 | ||
574 | srd_dbg("Calling decode() on instance %s with %" PRIu64 " bytes " | |
575 | "starting at sample %" PRIu64 ".", di->inst_id, inbuflen, | |
576 | start_samplenum); | |
577 | ||
578 | /* Return an error upon unusable input. */ | |
579 | if (!di) { | |
580 | srd_dbg("empty decoder instance"); | |
581 | return SRD_ERR_ARG; | |
582 | } | |
583 | if (!inbuf) { | |
584 | srd_dbg("NULL buffer pointer"); | |
585 | return SRD_ERR_ARG; | |
586 | } | |
587 | if (inbuflen == 0) { | |
588 | srd_dbg("empty buffer"); | |
589 | return SRD_ERR_ARG; | |
590 | } | |
591 | ||
592 | /* | |
593 | * Create new srd_logic object. Each iteration around the PD's loop | |
594 | * will fill one sample into this object. | |
595 | */ | |
596 | logic = PyObject_New(srd_logic, &srd_logic_type); | |
597 | Py_INCREF(logic); | |
598 | logic->di = (struct srd_decoder_inst *)di; | |
599 | logic->start_samplenum = start_samplenum; | |
600 | logic->itercnt = 0; | |
601 | logic->inbuf = (uint8_t *)inbuf; | |
602 | logic->inbuflen = inbuflen; | |
603 | logic->sample = PyList_New(2); | |
604 | Py_INCREF(logic->sample); | |
605 | ||
606 | Py_IncRef(di->py_inst); | |
607 | if (!(py_res = PyObject_CallMethod(di->py_inst, "decode", | |
608 | "KKO", start_samplenum, end_samplenum, logic))) { | |
609 | srd_exception_catch("Protocol decoder instance %s: ", di->inst_id); | |
610 | return SRD_ERR_PYTHON; | |
611 | } | |
612 | Py_DecRef(py_res); | |
613 | ||
614 | return SRD_OK; | |
615 | } | |
616 | ||
617 | /** @private */ | |
618 | SRD_PRIV void srd_inst_free(struct srd_decoder_inst *di) | |
619 | { | |
620 | GSList *l; | |
621 | struct srd_pd_output *pdo; | |
622 | ||
623 | srd_dbg("Freeing instance %s", di->inst_id); | |
624 | ||
625 | Py_DecRef(di->py_inst); | |
626 | g_free(di->inst_id); | |
627 | g_free(di->dec_probemap); | |
628 | g_slist_free(di->next_di); | |
629 | for (l = di->pd_output; l; l = l->next) { | |
630 | pdo = l->data; | |
631 | g_free(pdo->proto_id); | |
632 | g_free(pdo); | |
633 | } | |
634 | g_slist_free(di->pd_output); | |
635 | g_free(di); | |
636 | } | |
637 | ||
638 | /** @private */ | |
639 | SRD_PRIV void srd_inst_free_all(struct srd_session *sess, GSList *stack) | |
640 | { | |
641 | GSList *l; | |
642 | struct srd_decoder_inst *di; | |
643 | ||
644 | if (session_is_valid(sess) != SRD_OK) { | |
645 | srd_err("Invalid session."); | |
646 | return; | |
647 | } | |
648 | ||
649 | di = NULL; | |
650 | for (l = stack ? stack : sess->di_list; di == NULL && l != NULL; l = l->next) { | |
651 | di = l->data; | |
652 | if (di->next_di) | |
653 | srd_inst_free_all(sess, di->next_di); | |
654 | srd_inst_free(di); | |
655 | } | |
656 | if (!stack) { | |
657 | g_slist_free(sess->di_list); | |
658 | sess->di_list = NULL; | |
659 | } | |
660 | } | |
661 | ||
662 | /** @} */ | |
663 |