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1 | /* | |
2 | * This file is part of the libsigrokdecode project. | |
3 | * | |
4 | * Copyright (C) 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 | #include <config.h> | |
21 | #include "libsigrokdecode-internal.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */ | |
22 | #include "libsigrokdecode.h" | |
23 | #include <inttypes.h> | |
24 | ||
25 | /** @cond PRIVATE */ | |
26 | extern SRD_PRIV GSList *sessions; | |
27 | /** @endcond */ | |
28 | ||
29 | typedef struct { | |
30 | PyObject_HEAD | |
31 | } srd_Decoder; | |
32 | ||
33 | /* This is only used for nicer srd_dbg() output. */ | |
34 | SRD_PRIV const char *output_type_name(unsigned int idx) | |
35 | { | |
36 | static const char names[][16] = { | |
37 | "OUTPUT_ANN", | |
38 | "OUTPUT_PYTHON", | |
39 | "OUTPUT_BINARY", | |
40 | "OUTPUT_LOGIC", | |
41 | "OUTPUT_META", | |
42 | "(invalid)" | |
43 | }; | |
44 | ||
45 | return names[MIN(idx, G_N_ELEMENTS(names) - 1)]; | |
46 | } | |
47 | ||
48 | static void release_annotation(struct srd_proto_data_annotation *pda) | |
49 | { | |
50 | if (!pda) | |
51 | return; | |
52 | if (pda->ann_text) | |
53 | g_strfreev(pda->ann_text); | |
54 | } | |
55 | ||
56 | static int convert_annotation(struct srd_decoder_inst *di, PyObject *obj, | |
57 | struct srd_proto_data *pdata) | |
58 | { | |
59 | PyObject *py_tmp; | |
60 | struct srd_pd_output *pdo; | |
61 | struct srd_proto_data_annotation *pda; | |
62 | int ann_class; | |
63 | char **ann_text; | |
64 | PyGILState_STATE gstate; | |
65 | ||
66 | gstate = PyGILState_Ensure(); | |
67 | ||
68 | /* Should be a list of [annotation class, [string, ...]]. */ | |
69 | if (!PyList_Check(obj)) { | |
70 | srd_err("Protocol decoder %s submitted an annotation that" | |
71 | " is not a list", di->decoder->name); | |
72 | goto err; | |
73 | } | |
74 | ||
75 | /* Should have 2 elements. */ | |
76 | if (PyList_Size(obj) != 2) { | |
77 | srd_err("Protocol decoder %s submitted annotation list with " | |
78 | "%zd elements instead of 2", di->decoder->name, | |
79 | PyList_Size(obj)); | |
80 | goto err; | |
81 | } | |
82 | ||
83 | /* | |
84 | * The first element should be an integer matching a previously | |
85 | * registered annotation class. | |
86 | */ | |
87 | py_tmp = PyList_GetItem(obj, 0); | |
88 | if (!PyLong_Check(py_tmp)) { | |
89 | srd_err("Protocol decoder %s submitted annotation list, but " | |
90 | "first element was not an integer.", di->decoder->name); | |
91 | goto err; | |
92 | } | |
93 | ann_class = PyLong_AsLong(py_tmp); | |
94 | if (!(pdo = g_slist_nth_data(di->decoder->annotations, ann_class))) { | |
95 | srd_err("Protocol decoder %s submitted data to unregistered " | |
96 | "annotation class %d.", di->decoder->name, ann_class); | |
97 | goto err; | |
98 | } | |
99 | ||
100 | /* Second element must be a list. */ | |
101 | py_tmp = PyList_GetItem(obj, 1); | |
102 | if (!PyList_Check(py_tmp)) { | |
103 | srd_err("Protocol decoder %s submitted annotation list, but " | |
104 | "second element was not a list.", di->decoder->name); | |
105 | goto err; | |
106 | } | |
107 | if (py_strseq_to_char(py_tmp, &ann_text) != SRD_OK) { | |
108 | srd_err("Protocol decoder %s submitted annotation list, but " | |
109 | "second element was malformed.", di->decoder->name); | |
110 | goto err; | |
111 | } | |
112 | ||
113 | pda = pdata->data; | |
114 | pda->ann_class = ann_class; | |
115 | pda->ann_text = ann_text; | |
116 | ||
117 | PyGILState_Release(gstate); | |
118 | ||
119 | return SRD_OK; | |
120 | ||
121 | err: | |
122 | PyGILState_Release(gstate); | |
123 | ||
124 | return SRD_ERR_PYTHON; | |
125 | } | |
126 | ||
127 | static void release_logic(struct srd_proto_data_logic *pdl) | |
128 | { | |
129 | if (!pdl) | |
130 | return; | |
131 | g_free((void *)pdl->data); | |
132 | } | |
133 | ||
134 | static int convert_logic(struct srd_decoder_inst *di, PyObject *obj, | |
135 | struct srd_proto_data *pdata) | |
136 | { | |
137 | struct srd_proto_data_logic *pdl; | |
138 | PyObject *py_tmp; | |
139 | Py_ssize_t size; | |
140 | int logic_class; | |
141 | char *class_name, *buf; | |
142 | PyGILState_STATE gstate; | |
143 | ||
144 | gstate = PyGILState_Ensure(); | |
145 | ||
146 | /* Should be a list of [logic class, bytes]. */ | |
147 | if (!PyList_Check(obj)) { | |
148 | srd_err("Protocol decoder %s submitted non-list for SRD_OUTPUT_LOGIC.", | |
149 | di->decoder->name); | |
150 | goto err; | |
151 | } | |
152 | ||
153 | /* Should have 2 elements. */ | |
154 | if (PyList_Size(obj) != 2) { | |
155 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_LOGIC list " | |
156 | "with %zd elements instead of 2", di->decoder->name, | |
157 | PyList_Size(obj)); | |
158 | goto err; | |
159 | } | |
160 | ||
161 | /* The first element should be an integer. */ | |
162 | py_tmp = PyList_GetItem(obj, 0); | |
163 | if (!PyLong_Check(py_tmp)) { | |
164 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_LOGIC list, " | |
165 | "but first element was not an integer.", di->decoder->name); | |
166 | goto err; | |
167 | } | |
168 | logic_class = PyLong_AsLong(py_tmp); | |
169 | if (!(class_name = g_slist_nth_data(di->decoder->logic_output_channels, logic_class))) { | |
170 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_LOGIC with " | |
171 | "unregistered logic class %d.", di->decoder->name, logic_class); | |
172 | goto err; | |
173 | } | |
174 | ||
175 | /* Second element should be bytes. */ | |
176 | py_tmp = PyList_GetItem(obj, 1); | |
177 | if (!PyBytes_Check(py_tmp)) { | |
178 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_LOGIC list, " | |
179 | "but second element was not bytes.", di->decoder->name); | |
180 | goto err; | |
181 | } | |
182 | ||
183 | /* Consider an empty set of bytes a bug. */ | |
184 | if (PyBytes_Size(py_tmp) == 0) { | |
185 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_LOGIC " | |
186 | "with empty data set.", di->decoder->name); | |
187 | goto err; | |
188 | } | |
189 | ||
190 | if (PyBytes_AsStringAndSize(py_tmp, &buf, &size) == -1) | |
191 | goto err; | |
192 | ||
193 | PyGILState_Release(gstate); | |
194 | ||
195 | pdl = pdata->data; | |
196 | pdl->logic_class = logic_class; | |
197 | pdl->size = size; | |
198 | if (!(pdl->data = g_try_malloc(pdl->size))) | |
199 | return SRD_ERR_MALLOC; | |
200 | memcpy((void *)pdl->data, (const void *)buf, pdl->size); | |
201 | ||
202 | return SRD_OK; | |
203 | ||
204 | err: | |
205 | PyGILState_Release(gstate); | |
206 | ||
207 | return SRD_ERR_PYTHON; | |
208 | } | |
209 | ||
210 | static void release_binary(struct srd_proto_data_binary *pdb) | |
211 | { | |
212 | if (!pdb) | |
213 | return; | |
214 | g_free((void *)pdb->data); | |
215 | } | |
216 | ||
217 | static int convert_binary(struct srd_decoder_inst *di, PyObject *obj, | |
218 | struct srd_proto_data *pdata) | |
219 | { | |
220 | struct srd_proto_data_binary *pdb; | |
221 | PyObject *py_tmp; | |
222 | Py_ssize_t size; | |
223 | int bin_class; | |
224 | char *class_name, *buf; | |
225 | PyGILState_STATE gstate; | |
226 | ||
227 | gstate = PyGILState_Ensure(); | |
228 | ||
229 | /* Should be a list of [binary class, bytes]. */ | |
230 | if (!PyList_Check(obj)) { | |
231 | srd_err("Protocol decoder %s submitted non-list for SRD_OUTPUT_BINARY.", | |
232 | di->decoder->name); | |
233 | goto err; | |
234 | } | |
235 | ||
236 | /* Should have 2 elements. */ | |
237 | if (PyList_Size(obj) != 2) { | |
238 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY list " | |
239 | "with %zd elements instead of 2", di->decoder->name, | |
240 | PyList_Size(obj)); | |
241 | goto err; | |
242 | } | |
243 | ||
244 | /* The first element should be an integer. */ | |
245 | py_tmp = PyList_GetItem(obj, 0); | |
246 | if (!PyLong_Check(py_tmp)) { | |
247 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY list, " | |
248 | "but first element was not an integer.", di->decoder->name); | |
249 | goto err; | |
250 | } | |
251 | bin_class = PyLong_AsLong(py_tmp); | |
252 | if (!(class_name = g_slist_nth_data(di->decoder->binary, bin_class))) { | |
253 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY with " | |
254 | "unregistered binary class %d.", di->decoder->name, bin_class); | |
255 | goto err; | |
256 | } | |
257 | ||
258 | /* Second element should be bytes. */ | |
259 | py_tmp = PyList_GetItem(obj, 1); | |
260 | if (!PyBytes_Check(py_tmp)) { | |
261 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY list, " | |
262 | "but second element was not bytes.", di->decoder->name); | |
263 | goto err; | |
264 | } | |
265 | ||
266 | /* Consider an empty set of bytes a bug. */ | |
267 | if (PyBytes_Size(py_tmp) == 0) { | |
268 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY " | |
269 | "with empty data set.", di->decoder->name); | |
270 | goto err; | |
271 | } | |
272 | ||
273 | if (PyBytes_AsStringAndSize(py_tmp, &buf, &size) == -1) | |
274 | goto err; | |
275 | ||
276 | PyGILState_Release(gstate); | |
277 | ||
278 | pdb = pdata->data; | |
279 | pdb->bin_class = bin_class; | |
280 | pdb->size = size; | |
281 | if (!(pdb->data = g_try_malloc(pdb->size))) | |
282 | return SRD_ERR_MALLOC; | |
283 | memcpy((void *)pdb->data, (const void *)buf, pdb->size); | |
284 | ||
285 | return SRD_OK; | |
286 | ||
287 | err: | |
288 | PyGILState_Release(gstate); | |
289 | ||
290 | return SRD_ERR_PYTHON; | |
291 | } | |
292 | ||
293 | static inline struct srd_decoder_inst *srd_sess_inst_find_by_obj( | |
294 | struct srd_session *sess, const GSList *stack, const PyObject *obj) | |
295 | { | |
296 | const GSList *l; | |
297 | struct srd_decoder_inst *tmp, *di; | |
298 | ||
299 | if (!sess) | |
300 | return NULL; | |
301 | ||
302 | di = NULL; | |
303 | for (l = stack ? stack : sess->di_list; di == NULL && l != NULL; l = l->next) { | |
304 | tmp = l->data; | |
305 | if (tmp->py_inst == obj) | |
306 | di = tmp; | |
307 | else if (tmp->next_di) | |
308 | di = srd_sess_inst_find_by_obj(sess, tmp->next_di, obj); | |
309 | } | |
310 | ||
311 | return di; | |
312 | } | |
313 | ||
314 | /** | |
315 | * Find a decoder instance by its Python object. | |
316 | * | |
317 | * I.e. find that instance's instantiation of the sigrokdecode.Decoder class. | |
318 | * This will recurse to find the instance anywhere in the stack tree of all | |
319 | * sessions. | |
320 | * | |
321 | * @param stack Pointer to a GSList of struct srd_decoder_inst, indicating the | |
322 | * stack to search. To start searching at the bottom level of | |
323 | * decoder instances, pass NULL. | |
324 | * @param obj The Python class instantiation. | |
325 | * | |
326 | * @return Pointer to struct srd_decoder_inst, or NULL if not found. | |
327 | * | |
328 | * @since 0.1.0 | |
329 | */ | |
330 | static inline struct srd_decoder_inst *srd_inst_find_by_obj( | |
331 | const GSList *stack, const PyObject *obj) | |
332 | { | |
333 | struct srd_decoder_inst *di; | |
334 | struct srd_session *sess; | |
335 | GSList *l; | |
336 | ||
337 | /* Performance shortcut: Handle the most common case first. */ | |
338 | sess = sessions->data; | |
339 | di = sess->di_list->data; | |
340 | if (di->py_inst == obj) | |
341 | return di; | |
342 | ||
343 | di = NULL; | |
344 | for (l = sessions; di == NULL && l != NULL; l = l->next) { | |
345 | sess = l->data; | |
346 | di = srd_sess_inst_find_by_obj(sess, stack, obj); | |
347 | } | |
348 | ||
349 | return di; | |
350 | } | |
351 | ||
352 | static int convert_meta(struct srd_proto_data *pdata, PyObject *obj) | |
353 | { | |
354 | long long intvalue; | |
355 | double dvalue; | |
356 | PyGILState_STATE gstate; | |
357 | ||
358 | gstate = PyGILState_Ensure(); | |
359 | ||
360 | if (g_variant_type_equal(pdata->pdo->meta_type, G_VARIANT_TYPE_INT64)) { | |
361 | if (!PyLong_Check(obj)) { | |
362 | PyErr_Format(PyExc_TypeError, "This output was registered " | |
363 | "as 'int', but something else was passed."); | |
364 | goto err; | |
365 | } | |
366 | intvalue = PyLong_AsLongLong(obj); | |
367 | if (PyErr_Occurred()) | |
368 | goto err; | |
369 | pdata->data = g_variant_new_int64(intvalue); | |
370 | } else if (g_variant_type_equal(pdata->pdo->meta_type, G_VARIANT_TYPE_DOUBLE)) { | |
371 | if (!PyFloat_Check(obj)) { | |
372 | PyErr_Format(PyExc_TypeError, "This output was registered " | |
373 | "as 'float', but something else was passed."); | |
374 | goto err; | |
375 | } | |
376 | dvalue = PyFloat_AsDouble(obj); | |
377 | if (PyErr_Occurred()) | |
378 | goto err; | |
379 | pdata->data = g_variant_new_double(dvalue); | |
380 | } | |
381 | ||
382 | PyGILState_Release(gstate); | |
383 | ||
384 | return SRD_OK; | |
385 | ||
386 | err: | |
387 | PyGILState_Release(gstate); | |
388 | ||
389 | return SRD_ERR_PYTHON; | |
390 | } | |
391 | ||
392 | static void release_meta(GVariant *gvar) | |
393 | { | |
394 | if (!gvar) | |
395 | return; | |
396 | g_variant_unref(gvar); | |
397 | } | |
398 | ||
399 | static PyObject *Decoder_put(PyObject *self, PyObject *args) | |
400 | { | |
401 | GSList *l; | |
402 | PyObject *py_data, *py_res; | |
403 | struct srd_decoder_inst *di, *next_di; | |
404 | struct srd_pd_output *pdo; | |
405 | struct srd_proto_data pdata; | |
406 | struct srd_proto_data_annotation pda; | |
407 | struct srd_proto_data_binary pdb; | |
408 | uint64_t start_sample, end_sample; | |
409 | int output_id; | |
410 | struct srd_pd_callback *cb; | |
411 | PyGILState_STATE gstate; | |
412 | ||
413 | py_data = NULL; | |
414 | ||
415 | gstate = PyGILState_Ensure(); | |
416 | ||
417 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
418 | /* Shouldn't happen. */ | |
419 | srd_dbg("put(): self instance not found."); | |
420 | goto err; | |
421 | } | |
422 | ||
423 | if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample, | |
424 | &output_id, &py_data)) { | |
425 | /* | |
426 | * This throws an exception, but by returning NULL here we let | |
427 | * Python raise it. This results in a much better trace in | |
428 | * controller.c on the decode() method call. | |
429 | */ | |
430 | goto err; | |
431 | } | |
432 | ||
433 | if (!(l = g_slist_nth(di->pd_output, output_id))) { | |
434 | srd_err("Protocol decoder %s submitted invalid output ID %d.", | |
435 | di->decoder->name, output_id); | |
436 | goto err; | |
437 | } | |
438 | pdo = l->data; | |
439 | ||
440 | /* Upon SRD_OUTPUT_PYTHON for stacked PDs, we have a nicer log message later. */ | |
441 | if (pdo->output_type != SRD_OUTPUT_PYTHON && di->next_di != NULL) { | |
442 | srd_spew("Instance %s put %" PRIu64 "-%" PRIu64 " %s on " | |
443 | "oid %d (%s).", di->inst_id, start_sample, end_sample, | |
444 | output_type_name(pdo->output_type), output_id, | |
445 | pdo->proto_id); | |
446 | } | |
447 | ||
448 | pdata.start_sample = start_sample; | |
449 | pdata.end_sample = end_sample; | |
450 | pdata.pdo = pdo; | |
451 | pdata.data = NULL; | |
452 | ||
453 | switch (pdo->output_type) { | |
454 | case SRD_OUTPUT_ANN: | |
455 | /* Annotations are only fed to callbacks. */ | |
456 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
457 | pdata.data = &pda; | |
458 | /* Convert from PyDict to srd_proto_data_annotation. */ | |
459 | if (convert_annotation(di, py_data, &pdata) != SRD_OK) { | |
460 | /* An error was already logged. */ | |
461 | break; | |
462 | } | |
463 | Py_BEGIN_ALLOW_THREADS | |
464 | cb->cb(&pdata, cb->cb_data); | |
465 | Py_END_ALLOW_THREADS | |
466 | release_annotation(pdata.data); | |
467 | } | |
468 | break; | |
469 | case SRD_OUTPUT_PYTHON: | |
470 | for (l = di->next_di; l; l = l->next) { | |
471 | next_di = l->data; | |
472 | srd_spew("Instance %s put %" PRIu64 "-%" PRIu64 " %s " | |
473 | "on oid %d (%s) to instance %s.", di->inst_id, | |
474 | start_sample, | |
475 | end_sample, output_type_name(pdo->output_type), | |
476 | output_id, pdo->proto_id, next_di->inst_id); | |
477 | if (!(py_res = PyObject_CallMethod( | |
478 | next_di->py_inst, "decode", "KKO", start_sample, | |
479 | end_sample, py_data))) { | |
480 | srd_exception_catch("Calling %s decode() failed", | |
481 | next_di->inst_id); | |
482 | } | |
483 | Py_XDECREF(py_res); | |
484 | } | |
485 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
486 | /* | |
487 | * Frontends aren't really supposed to get Python | |
488 | * callbacks, but it's useful for testing. | |
489 | */ | |
490 | pdata.data = py_data; | |
491 | cb->cb(&pdata, cb->cb_data); | |
492 | } | |
493 | break; | |
494 | case SRD_OUTPUT_BINARY: | |
495 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
496 | pdata.data = &pdb; | |
497 | /* Convert from PyDict to srd_proto_data_binary. */ | |
498 | if (convert_binary(di, py_data, &pdata) != SRD_OK) { | |
499 | /* An error was already logged. */ | |
500 | break; | |
501 | } | |
502 | Py_BEGIN_ALLOW_THREADS | |
503 | cb->cb(&pdata, cb->cb_data); | |
504 | Py_END_ALLOW_THREADS | |
505 | release_binary(pdata.data); | |
506 | } | |
507 | break; | |
508 | case SRD_OUTPUT_LOGIC: | |
509 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
510 | pdata.data = &pdb; | |
511 | /* Convert from PyDict to srd_proto_data_logic. */ | |
512 | if (convert_logic(di, py_data, &pdata) != SRD_OK) { | |
513 | /* An error was already logged. */ | |
514 | break; | |
515 | } | |
516 | Py_BEGIN_ALLOW_THREADS | |
517 | cb->cb(&pdata, cb->cb_data); | |
518 | Py_END_ALLOW_THREADS | |
519 | release_logic(pdata.data); | |
520 | } | |
521 | break; | |
522 | case SRD_OUTPUT_META: | |
523 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
524 | /* Annotations need converting from PyObject. */ | |
525 | if (convert_meta(&pdata, py_data) != SRD_OK) { | |
526 | /* An exception was already set up. */ | |
527 | break; | |
528 | } | |
529 | Py_BEGIN_ALLOW_THREADS | |
530 | cb->cb(&pdata, cb->cb_data); | |
531 | Py_END_ALLOW_THREADS | |
532 | release_meta(pdata.data); | |
533 | } | |
534 | break; | |
535 | default: | |
536 | srd_err("Protocol decoder %s submitted invalid output type %d.", | |
537 | di->decoder->name, pdo->output_type); | |
538 | break; | |
539 | } | |
540 | ||
541 | PyGILState_Release(gstate); | |
542 | ||
543 | Py_RETURN_NONE; | |
544 | ||
545 | err: | |
546 | PyGILState_Release(gstate); | |
547 | ||
548 | return NULL; | |
549 | } | |
550 | ||
551 | static PyObject *Decoder_register(PyObject *self, PyObject *args, | |
552 | PyObject *kwargs) | |
553 | { | |
554 | struct srd_decoder_inst *di; | |
555 | struct srd_pd_output *pdo; | |
556 | PyObject *py_new_output_id; | |
557 | PyTypeObject *meta_type_py; | |
558 | const GVariantType *meta_type_gv; | |
559 | int output_type; | |
560 | char *proto_id, *meta_name, *meta_descr; | |
561 | char *keywords[] = { "output_type", "proto_id", "meta", NULL }; | |
562 | PyGILState_STATE gstate; | |
563 | gboolean is_meta; | |
564 | GSList *l; | |
565 | struct srd_pd_output *cmp; | |
566 | ||
567 | gstate = PyGILState_Ensure(); | |
568 | ||
569 | meta_type_py = NULL; | |
570 | meta_type_gv = NULL; | |
571 | meta_name = meta_descr = NULL; | |
572 | ||
573 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
574 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
575 | goto err; | |
576 | } | |
577 | ||
578 | /* Default to instance ID, which defaults to class ID. */ | |
579 | proto_id = di->inst_id; | |
580 | if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|s(Oss)", keywords, | |
581 | &output_type, &proto_id, | |
582 | &meta_type_py, &meta_name, &meta_descr)) { | |
583 | /* Let Python raise this exception. */ | |
584 | goto err; | |
585 | } | |
586 | ||
587 | /* Check if the meta value's type is supported. */ | |
588 | is_meta = output_type == SRD_OUTPUT_META; | |
589 | if (is_meta) { | |
590 | if (meta_type_py == &PyLong_Type) | |
591 | meta_type_gv = G_VARIANT_TYPE_INT64; | |
592 | else if (meta_type_py == &PyFloat_Type) | |
593 | meta_type_gv = G_VARIANT_TYPE_DOUBLE; | |
594 | else { | |
595 | PyErr_Format(PyExc_TypeError, "Unsupported type."); | |
596 | goto err; | |
597 | } | |
598 | } | |
599 | ||
600 | pdo = NULL; | |
601 | for (l = di->pd_output; l; l = l->next) { | |
602 | cmp = l->data; | |
603 | if (cmp->output_type != output_type) | |
604 | continue; | |
605 | if (strcmp(cmp->proto_id, proto_id) != 0) | |
606 | continue; | |
607 | if (is_meta && cmp->meta_type != meta_type_gv) | |
608 | continue; | |
609 | if (is_meta && strcmp(cmp->meta_name, meta_name) != 0) | |
610 | continue; | |
611 | if (is_meta && strcmp(cmp->meta_descr, meta_descr) != 0) | |
612 | continue; | |
613 | pdo = cmp; | |
614 | break; | |
615 | } | |
616 | if (pdo) { | |
617 | py_new_output_id = Py_BuildValue("i", pdo->pdo_id); | |
618 | PyGILState_Release(gstate); | |
619 | return py_new_output_id; | |
620 | } | |
621 | ||
622 | pdo = g_malloc(sizeof(struct srd_pd_output)); | |
623 | ||
624 | /* pdo_id is just a simple index, nothing is deleted from this list anyway. */ | |
625 | pdo->pdo_id = g_slist_length(di->pd_output); | |
626 | pdo->output_type = output_type; | |
627 | pdo->di = di; | |
628 | pdo->proto_id = g_strdup(proto_id); | |
629 | ||
630 | if (output_type == SRD_OUTPUT_META) { | |
631 | pdo->meta_type = meta_type_gv; | |
632 | pdo->meta_name = g_strdup(meta_name); | |
633 | pdo->meta_descr = g_strdup(meta_descr); | |
634 | } | |
635 | ||
636 | di->pd_output = g_slist_append(di->pd_output, pdo); | |
637 | py_new_output_id = Py_BuildValue("i", pdo->pdo_id); | |
638 | ||
639 | PyGILState_Release(gstate); | |
640 | ||
641 | srd_dbg("Instance %s creating new output type %s as oid %d (%s).", | |
642 | di->inst_id, output_type_name(output_type), pdo->pdo_id, | |
643 | proto_id); | |
644 | ||
645 | return py_new_output_id; | |
646 | ||
647 | err: | |
648 | PyGILState_Release(gstate); | |
649 | ||
650 | return NULL; | |
651 | } | |
652 | ||
653 | static int get_term_type(const char *v) | |
654 | { | |
655 | switch (v[0]) { | |
656 | case 'h': | |
657 | return SRD_TERM_HIGH; | |
658 | case 'l': | |
659 | return SRD_TERM_LOW; | |
660 | case 'r': | |
661 | return SRD_TERM_RISING_EDGE; | |
662 | case 'f': | |
663 | return SRD_TERM_FALLING_EDGE; | |
664 | case 'e': | |
665 | return SRD_TERM_EITHER_EDGE; | |
666 | case 'n': | |
667 | return SRD_TERM_NO_EDGE; | |
668 | default: | |
669 | return -1; | |
670 | } | |
671 | ||
672 | return -1; | |
673 | } | |
674 | ||
675 | /** | |
676 | * Get the pin values at the current sample number. | |
677 | * | |
678 | * @param di The decoder instance to use. Must not be NULL. | |
679 | * The number of channels must be >= 1. | |
680 | * | |
681 | * @return A newly allocated PyTuple containing the pin values at the | |
682 | * current sample number. | |
683 | */ | |
684 | static PyObject *get_current_pinvalues(const struct srd_decoder_inst *di) | |
685 | { | |
686 | int i; | |
687 | uint8_t sample; | |
688 | const uint8_t *sample_pos; | |
689 | int byte_offset, bit_offset; | |
690 | PyObject *py_pinvalues; | |
691 | PyGILState_STATE gstate; | |
692 | ||
693 | if (!di) { | |
694 | srd_err("Invalid decoder instance."); | |
695 | return NULL; | |
696 | } | |
697 | ||
698 | gstate = PyGILState_Ensure(); | |
699 | ||
700 | py_pinvalues = PyTuple_New(di->dec_num_channels); | |
701 | ||
702 | for (i = 0; i < di->dec_num_channels; i++) { | |
703 | /* A channelmap value of -1 means "unused optional channel". */ | |
704 | if (di->dec_channelmap[i] == -1) { | |
705 | /* Value of unused channel is 0xff, instead of 0 or 1. */ | |
706 | PyTuple_SetItem(py_pinvalues, i, PyLong_FromUnsignedLong(0xff)); | |
707 | } else { | |
708 | sample_pos = di->inbuf + ((di->abs_cur_samplenum - di->abs_start_samplenum) * di->data_unitsize); | |
709 | byte_offset = di->dec_channelmap[i] / 8; | |
710 | bit_offset = di->dec_channelmap[i] % 8; | |
711 | sample = *(sample_pos + byte_offset) & (1 << bit_offset) ? 1 : 0; | |
712 | PyTuple_SetItem(py_pinvalues, i, PyLong_FromUnsignedLong(sample)); | |
713 | } | |
714 | } | |
715 | ||
716 | PyGILState_Release(gstate); | |
717 | ||
718 | return py_pinvalues; | |
719 | } | |
720 | ||
721 | /** | |
722 | * Create a list of terms in the specified condition. | |
723 | * | |
724 | * If there are no terms in the condition, 'term_list' will be NULL. | |
725 | * | |
726 | * @param di The decoder instance to use. Must not be NULL. | |
727 | * @param py_dict A Python dict containing terms. Must not be NULL. | |
728 | * @param term_list Pointer to a GSList which will be set to the newly | |
729 | * created list of terms. Must not be NULL. | |
730 | * | |
731 | * @return SRD_OK upon success, a negative error code otherwise. | |
732 | */ | |
733 | static int create_term_list(struct srd_decoder_inst *di, | |
734 | PyObject *py_dict, GSList **term_list) | |
735 | { | |
736 | Py_ssize_t pos = 0; | |
737 | PyObject *py_key, *py_value; | |
738 | struct srd_term *term; | |
739 | int64_t num_samples_to_skip; | |
740 | char *term_str; | |
741 | PyGILState_STATE gstate; | |
742 | ||
743 | if (!py_dict || !term_list) | |
744 | return SRD_ERR_ARG; | |
745 | ||
746 | /* "Create" an empty GSList of terms. */ | |
747 | *term_list = NULL; | |
748 | ||
749 | gstate = PyGILState_Ensure(); | |
750 | ||
751 | /* Iterate over all items in the current dict. */ | |
752 | while (PyDict_Next(py_dict, &pos, &py_key, &py_value)) { | |
753 | /* Check whether the current key is a string or a number. */ | |
754 | if (PyLong_Check(py_key)) { | |
755 | /* The key is a number. */ | |
756 | /* Get the value string. */ | |
757 | if ((py_pydictitem_as_str(py_dict, py_key, &term_str)) != SRD_OK) { | |
758 | srd_err("Failed to get the value."); | |
759 | goto err; | |
760 | } | |
761 | term = g_malloc(sizeof(struct srd_term)); | |
762 | term->type = get_term_type(term_str); | |
763 | term->channel = PyLong_AsLong(py_key); | |
764 | if (term->channel < 0 || term->channel >= di->dec_num_channels) | |
765 | term->type = SRD_TERM_ALWAYS_FALSE; | |
766 | g_free(term_str); | |
767 | } else if (PyUnicode_Check(py_key)) { | |
768 | /* The key is a string. */ | |
769 | /* TODO: Check if the key is "skip". */ | |
770 | if ((py_pydictitem_as_long(py_dict, py_key, &num_samples_to_skip)) != SRD_OK) { | |
771 | srd_err("Failed to get number of samples to skip."); | |
772 | goto err; | |
773 | } | |
774 | term = g_malloc(sizeof(struct srd_term)); | |
775 | term->type = SRD_TERM_SKIP; | |
776 | term->num_samples_to_skip = num_samples_to_skip; | |
777 | term->num_samples_already_skipped = 0; | |
778 | if (num_samples_to_skip < 0) | |
779 | term->type = SRD_TERM_ALWAYS_FALSE; | |
780 | } else { | |
781 | srd_err("Term key is neither a string nor a number."); | |
782 | goto err; | |
783 | } | |
784 | ||
785 | /* Add the term to the list of terms. */ | |
786 | *term_list = g_slist_append(*term_list, term); | |
787 | } | |
788 | ||
789 | PyGILState_Release(gstate); | |
790 | ||
791 | return SRD_OK; | |
792 | ||
793 | err: | |
794 | PyGILState_Release(gstate); | |
795 | ||
796 | return SRD_ERR; | |
797 | } | |
798 | ||
799 | /** | |
800 | * Replace the current condition list with the new one. | |
801 | * | |
802 | * @param self TODO. Must not be NULL. | |
803 | * @param args TODO. Must not be NULL. | |
804 | * | |
805 | * @retval SRD_OK The new condition list was set successfully. | |
806 | * @retval SRD_ERR There was an error setting the new condition list. | |
807 | * The contents of di->condition_list are undefined. | |
808 | * @retval 9999 TODO. | |
809 | */ | |
810 | static int set_new_condition_list(PyObject *self, PyObject *args) | |
811 | { | |
812 | struct srd_decoder_inst *di; | |
813 | GSList *term_list; | |
814 | PyObject *py_conditionlist, *py_conds, *py_dict; | |
815 | int i, num_conditions, ret; | |
816 | PyGILState_STATE gstate; | |
817 | ||
818 | if (!self || !args) | |
819 | return SRD_ERR_ARG; | |
820 | ||
821 | gstate = PyGILState_Ensure(); | |
822 | ||
823 | /* Get the decoder instance. */ | |
824 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
825 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
826 | goto err; | |
827 | } | |
828 | ||
829 | /* | |
830 | * Return an error condition from .wait() when termination is | |
831 | * requested, such that decode() will terminate. | |
832 | */ | |
833 | if (di->want_wait_terminate) { | |
834 | srd_dbg("%s: %s: Skip (want_term).", di->inst_id, __func__); | |
835 | goto err; | |
836 | } | |
837 | ||
838 | /* | |
839 | * Parse the argument of self.wait() into 'py_conds', and check | |
840 | * the data type. The argument is optional, None is assumed in | |
841 | * its absence. None or an empty dict or an empty list mean that | |
842 | * there is no condition, and the next available sample shall | |
843 | * get returned to the caller. | |
844 | */ | |
845 | py_conds = Py_None; | |
846 | if (!PyArg_ParseTuple(args, "|O", &py_conds)) { | |
847 | /* Let Python raise this exception. */ | |
848 | goto err; | |
849 | } | |
850 | if (py_conds == Py_None) { | |
851 | /* 'py_conds' is None. */ | |
852 | goto ret_9999; | |
853 | } else if (PyList_Check(py_conds)) { | |
854 | /* 'py_conds' is a list. */ | |
855 | py_conditionlist = py_conds; | |
856 | num_conditions = PyList_Size(py_conditionlist); | |
857 | if (num_conditions == 0) | |
858 | goto ret_9999; /* The PD invoked self.wait([]). */ | |
859 | Py_INCREF(py_conditionlist); | |
860 | } else if (PyDict_Check(py_conds)) { | |
861 | /* 'py_conds' is a dict. */ | |
862 | if (PyDict_Size(py_conds) == 0) | |
863 | goto ret_9999; /* The PD invoked self.wait({}). */ | |
864 | /* Make a list and put the dict in there for convenience. */ | |
865 | py_conditionlist = PyList_New(1); | |
866 | Py_INCREF(py_conds); | |
867 | PyList_SetItem(py_conditionlist, 0, py_conds); | |
868 | num_conditions = 1; | |
869 | } else { | |
870 | srd_err("Condition list is neither a list nor a dict."); | |
871 | goto err; | |
872 | } | |
873 | ||
874 | /* Free the old condition list. */ | |
875 | condition_list_free(di); | |
876 | ||
877 | ret = SRD_OK; | |
878 | ||
879 | /* Iterate over the conditions, set di->condition_list accordingly. */ | |
880 | for (i = 0; i < num_conditions; i++) { | |
881 | /* Get a condition (dict) from the condition list. */ | |
882 | py_dict = PyList_GetItem(py_conditionlist, i); | |
883 | if (!PyDict_Check(py_dict)) { | |
884 | srd_err("Condition is not a dict."); | |
885 | ret = SRD_ERR; | |
886 | break; | |
887 | } | |
888 | ||
889 | /* Create the list of terms in this condition. */ | |
890 | if ((ret = create_term_list(di, py_dict, &term_list)) < 0) | |
891 | break; | |
892 | ||
893 | /* Add the new condition to the PD instance's condition list. */ | |
894 | di->condition_list = g_slist_append(di->condition_list, term_list); | |
895 | } | |
896 | ||
897 | Py_DecRef(py_conditionlist); | |
898 | ||
899 | PyGILState_Release(gstate); | |
900 | ||
901 | return ret; | |
902 | ||
903 | err: | |
904 | PyGILState_Release(gstate); | |
905 | ||
906 | return SRD_ERR; | |
907 | ||
908 | ret_9999: | |
909 | PyGILState_Release(gstate); | |
910 | ||
911 | return 9999; | |
912 | } | |
913 | ||
914 | /** | |
915 | * Create a SKIP condition list for condition-less .wait() calls. | |
916 | * | |
917 | * @param di Decoder instance. | |
918 | * @param count Number of samples to skip. | |
919 | * | |
920 | * @retval SRD_OK The new condition list was set successfully. | |
921 | * @retval SRD_ERR There was an error setting the new condition list. | |
922 | * The contents of di->condition_list are undefined. | |
923 | * | |
924 | * This routine is a reduced and specialized version of the @ref | |
925 | * set_new_condition_list() and @ref create_term_list() routines which | |
926 | * gets invoked when .wait() was called without specifications for | |
927 | * conditions. This minor duplication of the SKIP term list creation | |
928 | * simplifies the logic and avoids the creation of expensive Python | |
929 | * objects with "constant" values which the caller did not pass in the | |
930 | * first place. It results in maximum sharing of match handling code | |
931 | * paths. | |
932 | */ | |
933 | static int set_skip_condition(struct srd_decoder_inst *di, uint64_t count) | |
934 | { | |
935 | struct srd_term *term; | |
936 | GSList *term_list; | |
937 | ||
938 | condition_list_free(di); | |
939 | term = g_malloc(sizeof(*term)); | |
940 | term->type = SRD_TERM_SKIP; | |
941 | term->num_samples_to_skip = count; | |
942 | term->num_samples_already_skipped = 0; | |
943 | term_list = g_slist_append(NULL, term); | |
944 | di->condition_list = g_slist_append(di->condition_list, term_list); | |
945 | ||
946 | return SRD_OK; | |
947 | } | |
948 | ||
949 | static PyObject *Decoder_wait(PyObject *self, PyObject *args) | |
950 | { | |
951 | int ret; | |
952 | uint64_t skip_count; | |
953 | unsigned int i; | |
954 | gboolean found_match; | |
955 | struct srd_decoder_inst *di; | |
956 | PyObject *py_pinvalues, *py_matched, *py_samplenum; | |
957 | PyGILState_STATE gstate; | |
958 | ||
959 | if (!self || !args) | |
960 | return NULL; | |
961 | ||
962 | gstate = PyGILState_Ensure(); | |
963 | ||
964 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
965 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
966 | PyGILState_Release(gstate); | |
967 | Py_RETURN_NONE; | |
968 | } | |
969 | ||
970 | ret = set_new_condition_list(self, args); | |
971 | if (ret < 0) { | |
972 | srd_dbg("%s: %s: Aborting wait().", di->inst_id, __func__); | |
973 | goto err; | |
974 | } | |
975 | if (ret == 9999) { | |
976 | /* | |
977 | * Empty condition list, automatic match. Arrange for the | |
978 | * execution of regular match handling code paths such that | |
979 | * the next available sample is returned to the caller. | |
980 | * Make sure to skip one sample when "anywhere within the | |
981 | * stream", yet make sure to not skip sample number 0. | |
982 | */ | |
983 | if (di->abs_cur_samplenum) | |
984 | skip_count = 1; | |
985 | else if (!di->condition_list) | |
986 | skip_count = 0; | |
987 | else | |
988 | skip_count = 1; | |
989 | ret = set_skip_condition(di, skip_count); | |
990 | if (ret < 0) { | |
991 | srd_dbg("%s: %s: Cannot setup condition-less wait().", | |
992 | di->inst_id, __func__); | |
993 | goto err; | |
994 | } | |
995 | } | |
996 | ||
997 | while (1) { | |
998 | ||
999 | Py_BEGIN_ALLOW_THREADS | |
1000 | ||
1001 | /* Wait for new samples to process, or termination request. */ | |
1002 | g_mutex_lock(&di->data_mutex); | |
1003 | while (!di->got_new_samples && !di->want_wait_terminate) | |
1004 | g_cond_wait(&di->got_new_samples_cond, &di->data_mutex); | |
1005 | ||
1006 | /* | |
1007 | * Check whether any of the current condition(s) match. | |
1008 | * Arrange for termination requests to take a code path which | |
1009 | * won't find new samples to process, pretends to have processed | |
1010 | * previously stored samples, and returns to the main thread, | |
1011 | * while the termination request still gets signalled. | |
1012 | */ | |
1013 | found_match = FALSE; | |
1014 | ||
1015 | /* Ignore return value for now, should never be negative. */ | |
1016 | (void)process_samples_until_condition_match(di, &found_match); | |
1017 | ||
1018 | Py_END_ALLOW_THREADS | |
1019 | ||
1020 | /* If there's a match, set self.samplenum etc. and return. */ | |
1021 | if (found_match) { | |
1022 | /* Set self.samplenum to the (absolute) sample number that matched. */ | |
1023 | py_samplenum = PyLong_FromUnsignedLongLong(di->abs_cur_samplenum); | |
1024 | PyObject_SetAttrString(di->py_inst, "samplenum", py_samplenum); | |
1025 | Py_DECREF(py_samplenum); | |
1026 | ||
1027 | if (di->match_array && di->match_array->len > 0) { | |
1028 | py_matched = PyTuple_New(di->match_array->len); | |
1029 | for (i = 0; i < di->match_array->len; i++) | |
1030 | PyTuple_SetItem(py_matched, i, PyBool_FromLong(di->match_array->data[i])); | |
1031 | PyObject_SetAttrString(di->py_inst, "matched", py_matched); | |
1032 | Py_DECREF(py_matched); | |
1033 | match_array_free(di); | |
1034 | } else { | |
1035 | PyObject_SetAttrString(di->py_inst, "matched", Py_None); | |
1036 | } | |
1037 | ||
1038 | py_pinvalues = get_current_pinvalues(di); | |
1039 | ||
1040 | g_mutex_unlock(&di->data_mutex); | |
1041 | ||
1042 | PyGILState_Release(gstate); | |
1043 | ||
1044 | return py_pinvalues; | |
1045 | } | |
1046 | ||
1047 | /* No match, reset state for the next chunk. */ | |
1048 | di->got_new_samples = FALSE; | |
1049 | di->handled_all_samples = TRUE; | |
1050 | di->abs_start_samplenum = 0; | |
1051 | di->abs_end_samplenum = 0; | |
1052 | di->inbuf = NULL; | |
1053 | di->inbuflen = 0; | |
1054 | ||
1055 | /* Signal the main thread that we handled all samples. */ | |
1056 | g_cond_signal(&di->handled_all_samples_cond); | |
1057 | ||
1058 | /* | |
1059 | * When termination of wait() and decode() was requested, | |
1060 | * then exit the loop after releasing the mutex. | |
1061 | */ | |
1062 | if (di->want_wait_terminate) { | |
1063 | srd_dbg("%s: %s: Will return from wait().", | |
1064 | di->inst_id, __func__); | |
1065 | g_mutex_unlock(&di->data_mutex); | |
1066 | goto err; | |
1067 | } | |
1068 | ||
1069 | g_mutex_unlock(&di->data_mutex); | |
1070 | } | |
1071 | ||
1072 | PyGILState_Release(gstate); | |
1073 | ||
1074 | Py_RETURN_NONE; | |
1075 | ||
1076 | err: | |
1077 | PyGILState_Release(gstate); | |
1078 | ||
1079 | return NULL; | |
1080 | } | |
1081 | ||
1082 | /** | |
1083 | * Return whether the specified channel was supplied to the decoder. | |
1084 | * | |
1085 | * @param self TODO. Must not be NULL. | |
1086 | * @param args TODO. Must not be NULL. | |
1087 | * | |
1088 | * @retval Py_True The channel has been supplied by the frontend. | |
1089 | * @retval Py_False The channel has been supplied by the frontend. | |
1090 | * @retval NULL An error occurred. | |
1091 | */ | |
1092 | static PyObject *Decoder_has_channel(PyObject *self, PyObject *args) | |
1093 | { | |
1094 | int idx, count; | |
1095 | struct srd_decoder_inst *di; | |
1096 | PyGILState_STATE gstate; | |
1097 | ||
1098 | if (!self || !args) | |
1099 | return NULL; | |
1100 | ||
1101 | gstate = PyGILState_Ensure(); | |
1102 | ||
1103 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
1104 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
1105 | goto err; | |
1106 | } | |
1107 | ||
1108 | /* | |
1109 | * Get the integer argument of self.has_channel(). Check for | |
1110 | * the range of supported PD input channel numbers. | |
1111 | */ | |
1112 | if (!PyArg_ParseTuple(args, "i", &idx)) { | |
1113 | /* Let Python raise this exception. */ | |
1114 | goto err; | |
1115 | } | |
1116 | ||
1117 | count = g_slist_length(di->decoder->channels) + | |
1118 | g_slist_length(di->decoder->opt_channels); | |
1119 | if (idx < 0 || idx >= count) { | |
1120 | srd_err("Invalid index %d, PD channel count %d.", idx, count); | |
1121 | PyErr_SetString(PyExc_IndexError, "invalid channel index"); | |
1122 | goto err; | |
1123 | } | |
1124 | ||
1125 | PyGILState_Release(gstate); | |
1126 | ||
1127 | return (di->dec_channelmap[idx] == -1) ? Py_False : Py_True; | |
1128 | ||
1129 | err: | |
1130 | PyGILState_Release(gstate); | |
1131 | ||
1132 | return NULL; | |
1133 | } | |
1134 | ||
1135 | static PyMethodDef Decoder_methods[] = { | |
1136 | { "put", Decoder_put, METH_VARARGS, | |
1137 | "Accepts a dictionary with the following keys: startsample, endsample, data" }, | |
1138 | { "register", (PyCFunction)(void(*)(void))Decoder_register, METH_VARARGS|METH_KEYWORDS, | |
1139 | "Register a new output stream" }, | |
1140 | { "wait", Decoder_wait, METH_VARARGS, | |
1141 | "Wait for one or more conditions to occur" }, | |
1142 | { "has_channel", Decoder_has_channel, METH_VARARGS, | |
1143 | "Report whether a channel was supplied" }, | |
1144 | {NULL, NULL, 0, NULL} | |
1145 | }; | |
1146 | ||
1147 | /** | |
1148 | * Create the sigrokdecode.Decoder type. | |
1149 | * | |
1150 | * @return The new type object. | |
1151 | * | |
1152 | * @private | |
1153 | */ | |
1154 | SRD_PRIV PyObject *srd_Decoder_type_new(void) | |
1155 | { | |
1156 | PyType_Spec spec; | |
1157 | PyType_Slot slots[] = { | |
1158 | { Py_tp_doc, "sigrok Decoder base class" }, | |
1159 | { Py_tp_methods, Decoder_methods }, | |
1160 | { Py_tp_new, (void *)&PyType_GenericNew }, | |
1161 | { 0, NULL } | |
1162 | }; | |
1163 | PyObject *py_obj; | |
1164 | PyGILState_STATE gstate; | |
1165 | ||
1166 | gstate = PyGILState_Ensure(); | |
1167 | ||
1168 | spec.name = "sigrokdecode.Decoder"; | |
1169 | spec.basicsize = sizeof(srd_Decoder); | |
1170 | spec.itemsize = 0; | |
1171 | spec.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE; | |
1172 | spec.slots = slots; | |
1173 | ||
1174 | py_obj = PyType_FromSpec(&spec); | |
1175 | ||
1176 | PyGILState_Release(gstate); | |
1177 | ||
1178 | return py_obj; | |
1179 | } |