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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_group; | |
141 | char *group_name, *buf; | |
142 | PyGILState_STATE gstate; | |
143 | ||
144 | gstate = PyGILState_Ensure(); | |
145 | ||
146 | /* Should be a list of [logic group, 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_group = PyLong_AsLong(py_tmp); | |
169 | if (!(group_name = g_slist_nth_data(di->decoder->logic_output_channels, logic_group))) { | |
170 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_LOGIC with " | |
171 | "unregistered logic group %d.", di->decoder->name, logic_group); | |
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_group = logic_group; | |
197 | /* pdl->repeat_count is set by the caller as it depends on the sample range */ | |
198 | if (!(pdl->data = g_try_malloc(size))) | |
199 | return SRD_ERR_MALLOC; | |
200 | memcpy((void *)pdl->data, (const void *)buf, 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 | struct srd_proto_data_logic pdl; | |
409 | uint64_t start_sample, end_sample; | |
410 | int output_id; | |
411 | struct srd_pd_callback *cb; | |
412 | PyGILState_STATE gstate; | |
413 | ||
414 | py_data = NULL; | |
415 | ||
416 | gstate = PyGILState_Ensure(); | |
417 | ||
418 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
419 | /* Shouldn't happen. */ | |
420 | srd_dbg("put(): self instance not found."); | |
421 | goto err; | |
422 | } | |
423 | ||
424 | if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample, | |
425 | &output_id, &py_data)) { | |
426 | /* | |
427 | * This throws an exception, but by returning NULL here we let | |
428 | * Python raise it. This results in a much better trace in | |
429 | * controller.c on the decode() method call. | |
430 | */ | |
431 | goto err; | |
432 | } | |
433 | ||
434 | if (!(l = g_slist_nth(di->pd_output, output_id))) { | |
435 | srd_err("Protocol decoder %s submitted invalid output ID %d.", | |
436 | di->decoder->name, output_id); | |
437 | goto err; | |
438 | } | |
439 | pdo = l->data; | |
440 | ||
441 | /* Upon SRD_OUTPUT_PYTHON for stacked PDs, we have a nicer log message later. */ | |
442 | if (pdo->output_type != SRD_OUTPUT_PYTHON && di->next_di != NULL) { | |
443 | srd_spew("Instance %s put %" PRIu64 "-%" PRIu64 " %s on " | |
444 | "oid %d (%s).", di->inst_id, start_sample, end_sample, | |
445 | output_type_name(pdo->output_type), output_id, | |
446 | pdo->proto_id); | |
447 | } | |
448 | ||
449 | pdata.start_sample = start_sample; | |
450 | pdata.end_sample = end_sample; | |
451 | pdata.pdo = pdo; | |
452 | pdata.data = NULL; | |
453 | ||
454 | switch (pdo->output_type) { | |
455 | case SRD_OUTPUT_ANN: | |
456 | /* Annotations are only fed to callbacks. */ | |
457 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
458 | pdata.data = &pda; | |
459 | /* Convert from PyDict to srd_proto_data_annotation. */ | |
460 | if (convert_annotation(di, py_data, &pdata) != SRD_OK) { | |
461 | /* An error was already logged. */ | |
462 | break; | |
463 | } | |
464 | Py_BEGIN_ALLOW_THREADS | |
465 | cb->cb(&pdata, cb->cb_data); | |
466 | Py_END_ALLOW_THREADS | |
467 | release_annotation(pdata.data); | |
468 | } | |
469 | break; | |
470 | case SRD_OUTPUT_PYTHON: | |
471 | for (l = di->next_di; l; l = l->next) { | |
472 | next_di = l->data; | |
473 | srd_spew("Instance %s put %" PRIu64 "-%" PRIu64 " %s " | |
474 | "on oid %d (%s) to instance %s.", di->inst_id, | |
475 | start_sample, | |
476 | end_sample, output_type_name(pdo->output_type), | |
477 | output_id, pdo->proto_id, next_di->inst_id); | |
478 | if (!(py_res = PyObject_CallMethod( | |
479 | next_di->py_inst, "decode", "KKO", start_sample, | |
480 | end_sample, py_data))) { | |
481 | srd_exception_catch("Calling %s decode() failed", | |
482 | next_di->inst_id); | |
483 | } | |
484 | Py_XDECREF(py_res); | |
485 | } | |
486 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
487 | /* | |
488 | * Frontends aren't really supposed to get Python | |
489 | * callbacks, but it's useful for testing. | |
490 | */ | |
491 | pdata.data = py_data; | |
492 | cb->cb(&pdata, cb->cb_data); | |
493 | } | |
494 | break; | |
495 | case SRD_OUTPUT_BINARY: | |
496 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
497 | pdata.data = &pdb; | |
498 | /* Convert from PyDict to srd_proto_data_binary. */ | |
499 | if (convert_binary(di, py_data, &pdata) != SRD_OK) { | |
500 | /* An error was already logged. */ | |
501 | break; | |
502 | } | |
503 | Py_BEGIN_ALLOW_THREADS | |
504 | cb->cb(&pdata, cb->cb_data); | |
505 | Py_END_ALLOW_THREADS | |
506 | release_binary(pdata.data); | |
507 | } | |
508 | break; | |
509 | case SRD_OUTPUT_LOGIC: | |
510 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
511 | pdata.data = &pdl; | |
512 | /* Convert from PyDict to srd_proto_data_logic. */ | |
513 | if (convert_logic(di, py_data, &pdata) != SRD_OK) { | |
514 | /* An error was already logged. */ | |
515 | break; | |
516 | } | |
517 | if (end_sample <= start_sample) { | |
518 | srd_err("Ignored SRD_OUTPUT_LOGIC with invalid sample range."); | |
519 | break; | |
520 | } | |
521 | pdl.repeat_count = (end_sample - start_sample) - 1; | |
522 | Py_BEGIN_ALLOW_THREADS | |
523 | cb->cb(&pdata, cb->cb_data); | |
524 | Py_END_ALLOW_THREADS | |
525 | release_logic(pdata.data); | |
526 | } | |
527 | break; | |
528 | case SRD_OUTPUT_META: | |
529 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
530 | /* Annotations need converting from PyObject. */ | |
531 | if (convert_meta(&pdata, py_data) != SRD_OK) { | |
532 | /* An exception was already set up. */ | |
533 | break; | |
534 | } | |
535 | Py_BEGIN_ALLOW_THREADS | |
536 | cb->cb(&pdata, cb->cb_data); | |
537 | Py_END_ALLOW_THREADS | |
538 | release_meta(pdata.data); | |
539 | } | |
540 | break; | |
541 | default: | |
542 | srd_err("Protocol decoder %s submitted invalid output type %d.", | |
543 | di->decoder->name, pdo->output_type); | |
544 | break; | |
545 | } | |
546 | ||
547 | PyGILState_Release(gstate); | |
548 | ||
549 | Py_RETURN_NONE; | |
550 | ||
551 | err: | |
552 | PyGILState_Release(gstate); | |
553 | ||
554 | return NULL; | |
555 | } | |
556 | ||
557 | static PyObject *Decoder_register(PyObject *self, PyObject *args, | |
558 | PyObject *kwargs) | |
559 | { | |
560 | struct srd_decoder_inst *di; | |
561 | struct srd_pd_output *pdo; | |
562 | PyObject *py_new_output_id; | |
563 | PyTypeObject *meta_type_py; | |
564 | const GVariantType *meta_type_gv; | |
565 | int output_type; | |
566 | char *proto_id, *meta_name, *meta_descr; | |
567 | char *keywords[] = { "output_type", "proto_id", "meta", NULL }; | |
568 | PyGILState_STATE gstate; | |
569 | gboolean is_meta; | |
570 | GSList *l; | |
571 | struct srd_pd_output *cmp; | |
572 | ||
573 | gstate = PyGILState_Ensure(); | |
574 | ||
575 | meta_type_py = NULL; | |
576 | meta_type_gv = NULL; | |
577 | meta_name = meta_descr = NULL; | |
578 | ||
579 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
580 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
581 | goto err; | |
582 | } | |
583 | ||
584 | /* Default to instance ID, which defaults to class ID. */ | |
585 | proto_id = di->inst_id; | |
586 | if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|s(Oss)", keywords, | |
587 | &output_type, &proto_id, | |
588 | &meta_type_py, &meta_name, &meta_descr)) { | |
589 | /* Let Python raise this exception. */ | |
590 | goto err; | |
591 | } | |
592 | ||
593 | /* Check if the meta value's type is supported. */ | |
594 | is_meta = output_type == SRD_OUTPUT_META; | |
595 | if (is_meta) { | |
596 | if (meta_type_py == &PyLong_Type) | |
597 | meta_type_gv = G_VARIANT_TYPE_INT64; | |
598 | else if (meta_type_py == &PyFloat_Type) | |
599 | meta_type_gv = G_VARIANT_TYPE_DOUBLE; | |
600 | else { | |
601 | PyErr_Format(PyExc_TypeError, "Unsupported type."); | |
602 | goto err; | |
603 | } | |
604 | } | |
605 | ||
606 | pdo = NULL; | |
607 | for (l = di->pd_output; l; l = l->next) { | |
608 | cmp = l->data; | |
609 | if (cmp->output_type != output_type) | |
610 | continue; | |
611 | if (strcmp(cmp->proto_id, proto_id) != 0) | |
612 | continue; | |
613 | if (is_meta && cmp->meta_type != meta_type_gv) | |
614 | continue; | |
615 | if (is_meta && strcmp(cmp->meta_name, meta_name) != 0) | |
616 | continue; | |
617 | if (is_meta && strcmp(cmp->meta_descr, meta_descr) != 0) | |
618 | continue; | |
619 | pdo = cmp; | |
620 | break; | |
621 | } | |
622 | if (pdo) { | |
623 | py_new_output_id = Py_BuildValue("i", pdo->pdo_id); | |
624 | PyGILState_Release(gstate); | |
625 | return py_new_output_id; | |
626 | } | |
627 | ||
628 | pdo = g_malloc(sizeof(struct srd_pd_output)); | |
629 | ||
630 | /* pdo_id is just a simple index, nothing is deleted from this list anyway. */ | |
631 | pdo->pdo_id = g_slist_length(di->pd_output); | |
632 | pdo->output_type = output_type; | |
633 | pdo->di = di; | |
634 | pdo->proto_id = g_strdup(proto_id); | |
635 | ||
636 | if (output_type == SRD_OUTPUT_META) { | |
637 | pdo->meta_type = meta_type_gv; | |
638 | pdo->meta_name = g_strdup(meta_name); | |
639 | pdo->meta_descr = g_strdup(meta_descr); | |
640 | } | |
641 | ||
642 | di->pd_output = g_slist_append(di->pd_output, pdo); | |
643 | py_new_output_id = Py_BuildValue("i", pdo->pdo_id); | |
644 | ||
645 | PyGILState_Release(gstate); | |
646 | ||
647 | srd_dbg("Instance %s creating new output type %s as oid %d (%s).", | |
648 | di->inst_id, output_type_name(output_type), pdo->pdo_id, | |
649 | proto_id); | |
650 | ||
651 | return py_new_output_id; | |
652 | ||
653 | err: | |
654 | PyGILState_Release(gstate); | |
655 | ||
656 | return NULL; | |
657 | } | |
658 | ||
659 | static int get_term_type(const char *v) | |
660 | { | |
661 | switch (v[0]) { | |
662 | case 'h': | |
663 | return SRD_TERM_HIGH; | |
664 | case 'l': | |
665 | return SRD_TERM_LOW; | |
666 | case 'r': | |
667 | return SRD_TERM_RISING_EDGE; | |
668 | case 'f': | |
669 | return SRD_TERM_FALLING_EDGE; | |
670 | case 'e': | |
671 | return SRD_TERM_EITHER_EDGE; | |
672 | case 'n': | |
673 | return SRD_TERM_NO_EDGE; | |
674 | default: | |
675 | return -1; | |
676 | } | |
677 | ||
678 | return -1; | |
679 | } | |
680 | ||
681 | /** | |
682 | * Get the pin values at the current sample number. | |
683 | * | |
684 | * @param di The decoder instance to use. Must not be NULL. | |
685 | * The number of channels must be >= 1. | |
686 | * | |
687 | * @return A newly allocated PyTuple containing the pin values at the | |
688 | * current sample number. | |
689 | */ | |
690 | static PyObject *get_current_pinvalues(const struct srd_decoder_inst *di) | |
691 | { | |
692 | int i; | |
693 | uint8_t sample; | |
694 | const uint8_t *sample_pos; | |
695 | int byte_offset, bit_offset; | |
696 | PyObject *py_pinvalues; | |
697 | PyGILState_STATE gstate; | |
698 | ||
699 | if (!di) { | |
700 | srd_err("Invalid decoder instance."); | |
701 | return NULL; | |
702 | } | |
703 | ||
704 | gstate = PyGILState_Ensure(); | |
705 | ||
706 | py_pinvalues = PyTuple_New(di->dec_num_channels); | |
707 | ||
708 | for (i = 0; i < di->dec_num_channels; i++) { | |
709 | /* A channelmap value of -1 means "unused optional channel". */ | |
710 | if (di->dec_channelmap[i] == -1) { | |
711 | /* Value of unused channel is 0xff, instead of 0 or 1. */ | |
712 | PyTuple_SetItem(py_pinvalues, i, PyLong_FromUnsignedLong(0xff)); | |
713 | } else { | |
714 | sample_pos = di->inbuf + ((di->abs_cur_samplenum - di->abs_start_samplenum) * di->data_unitsize); | |
715 | byte_offset = di->dec_channelmap[i] / 8; | |
716 | bit_offset = di->dec_channelmap[i] % 8; | |
717 | sample = *(sample_pos + byte_offset) & (1 << bit_offset) ? 1 : 0; | |
718 | PyTuple_SetItem(py_pinvalues, i, PyLong_FromUnsignedLong(sample)); | |
719 | } | |
720 | } | |
721 | ||
722 | PyGILState_Release(gstate); | |
723 | ||
724 | return py_pinvalues; | |
725 | } | |
726 | ||
727 | /** | |
728 | * Create a list of terms in the specified condition. | |
729 | * | |
730 | * If there are no terms in the condition, 'term_list' will be NULL. | |
731 | * | |
732 | * @param di The decoder instance to use. Must not be NULL. | |
733 | * @param py_dict A Python dict containing terms. Must not be NULL. | |
734 | * @param term_list Pointer to a GSList which will be set to the newly | |
735 | * created list of terms. Must not be NULL. | |
736 | * | |
737 | * @return SRD_OK upon success, a negative error code otherwise. | |
738 | */ | |
739 | static int create_term_list(struct srd_decoder_inst *di, | |
740 | PyObject *py_dict, GSList **term_list) | |
741 | { | |
742 | Py_ssize_t pos = 0; | |
743 | PyObject *py_key, *py_value; | |
744 | struct srd_term *term; | |
745 | int64_t num_samples_to_skip; | |
746 | char *term_str; | |
747 | PyGILState_STATE gstate; | |
748 | ||
749 | if (!py_dict || !term_list) | |
750 | return SRD_ERR_ARG; | |
751 | ||
752 | /* "Create" an empty GSList of terms. */ | |
753 | *term_list = NULL; | |
754 | ||
755 | gstate = PyGILState_Ensure(); | |
756 | ||
757 | /* Iterate over all items in the current dict. */ | |
758 | while (PyDict_Next(py_dict, &pos, &py_key, &py_value)) { | |
759 | /* Check whether the current key is a string or a number. */ | |
760 | if (PyLong_Check(py_key)) { | |
761 | /* The key is a number. */ | |
762 | /* Get the value string. */ | |
763 | if ((py_pydictitem_as_str(py_dict, py_key, &term_str)) != SRD_OK) { | |
764 | srd_err("Failed to get the value."); | |
765 | goto err; | |
766 | } | |
767 | term = g_malloc(sizeof(struct srd_term)); | |
768 | term->type = get_term_type(term_str); | |
769 | term->channel = PyLong_AsLong(py_key); | |
770 | if (term->channel < 0 || term->channel >= di->dec_num_channels) | |
771 | term->type = SRD_TERM_ALWAYS_FALSE; | |
772 | g_free(term_str); | |
773 | } else if (PyUnicode_Check(py_key)) { | |
774 | /* The key is a string. */ | |
775 | /* TODO: Check if the key is "skip". */ | |
776 | if ((py_pydictitem_as_long(py_dict, py_key, &num_samples_to_skip)) != SRD_OK) { | |
777 | srd_err("Failed to get number of samples to skip."); | |
778 | goto err; | |
779 | } | |
780 | term = g_malloc(sizeof(struct srd_term)); | |
781 | term->type = SRD_TERM_SKIP; | |
782 | term->num_samples_to_skip = num_samples_to_skip; | |
783 | term->num_samples_already_skipped = 0; | |
784 | if (num_samples_to_skip < 0) | |
785 | term->type = SRD_TERM_ALWAYS_FALSE; | |
786 | } else { | |
787 | srd_err("Term key is neither a string nor a number."); | |
788 | goto err; | |
789 | } | |
790 | ||
791 | /* Add the term to the list of terms. */ | |
792 | *term_list = g_slist_append(*term_list, term); | |
793 | } | |
794 | ||
795 | PyGILState_Release(gstate); | |
796 | ||
797 | return SRD_OK; | |
798 | ||
799 | err: | |
800 | PyGILState_Release(gstate); | |
801 | ||
802 | return SRD_ERR; | |
803 | } | |
804 | ||
805 | /** | |
806 | * Replace the current condition list with the new one. | |
807 | * | |
808 | * @param self TODO. Must not be NULL. | |
809 | * @param args TODO. Must not be NULL. | |
810 | * | |
811 | * @retval SRD_OK The new condition list was set successfully. | |
812 | * @retval SRD_ERR There was an error setting the new condition list. | |
813 | * The contents of di->condition_list are undefined. | |
814 | * @retval 9999 TODO. | |
815 | */ | |
816 | static int set_new_condition_list(PyObject *self, PyObject *args) | |
817 | { | |
818 | struct srd_decoder_inst *di; | |
819 | GSList *term_list; | |
820 | PyObject *py_conditionlist, *py_conds, *py_dict; | |
821 | int i, num_conditions, ret; | |
822 | PyGILState_STATE gstate; | |
823 | ||
824 | if (!self || !args) | |
825 | return SRD_ERR_ARG; | |
826 | ||
827 | gstate = PyGILState_Ensure(); | |
828 | ||
829 | /* Get the decoder instance. */ | |
830 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
831 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
832 | goto err; | |
833 | } | |
834 | ||
835 | /* | |
836 | * Return an error condition from .wait() when termination is | |
837 | * requested, such that decode() will terminate. | |
838 | */ | |
839 | if (di->want_wait_terminate) { | |
840 | srd_dbg("%s: %s: Skip (want_term).", di->inst_id, __func__); | |
841 | goto err; | |
842 | } | |
843 | ||
844 | /* | |
845 | * Parse the argument of self.wait() into 'py_conds', and check | |
846 | * the data type. The argument is optional, None is assumed in | |
847 | * its absence. None or an empty dict or an empty list mean that | |
848 | * there is no condition, and the next available sample shall | |
849 | * get returned to the caller. | |
850 | */ | |
851 | py_conds = Py_None; | |
852 | if (!PyArg_ParseTuple(args, "|O", &py_conds)) { | |
853 | /* Let Python raise this exception. */ | |
854 | goto err; | |
855 | } | |
856 | if (py_conds == Py_None) { | |
857 | /* 'py_conds' is None. */ | |
858 | goto ret_9999; | |
859 | } else if (PyList_Check(py_conds)) { | |
860 | /* 'py_conds' is a list. */ | |
861 | py_conditionlist = py_conds; | |
862 | num_conditions = PyList_Size(py_conditionlist); | |
863 | if (num_conditions == 0) | |
864 | goto ret_9999; /* The PD invoked self.wait([]). */ | |
865 | Py_INCREF(py_conditionlist); | |
866 | } else if (PyDict_Check(py_conds)) { | |
867 | /* 'py_conds' is a dict. */ | |
868 | if (PyDict_Size(py_conds) == 0) | |
869 | goto ret_9999; /* The PD invoked self.wait({}). */ | |
870 | /* Make a list and put the dict in there for convenience. */ | |
871 | py_conditionlist = PyList_New(1); | |
872 | Py_INCREF(py_conds); | |
873 | PyList_SetItem(py_conditionlist, 0, py_conds); | |
874 | num_conditions = 1; | |
875 | } else { | |
876 | srd_err("Condition list is neither a list nor a dict."); | |
877 | goto err; | |
878 | } | |
879 | ||
880 | /* Free the old condition list. */ | |
881 | condition_list_free(di); | |
882 | ||
883 | ret = SRD_OK; | |
884 | ||
885 | /* Iterate over the conditions, set di->condition_list accordingly. */ | |
886 | for (i = 0; i < num_conditions; i++) { | |
887 | /* Get a condition (dict) from the condition list. */ | |
888 | py_dict = PyList_GetItem(py_conditionlist, i); | |
889 | if (!PyDict_Check(py_dict)) { | |
890 | srd_err("Condition is not a dict."); | |
891 | ret = SRD_ERR; | |
892 | break; | |
893 | } | |
894 | ||
895 | /* Create the list of terms in this condition. */ | |
896 | if ((ret = create_term_list(di, py_dict, &term_list)) < 0) | |
897 | break; | |
898 | ||
899 | /* Add the new condition to the PD instance's condition list. */ | |
900 | di->condition_list = g_slist_append(di->condition_list, term_list); | |
901 | } | |
902 | ||
903 | Py_DecRef(py_conditionlist); | |
904 | ||
905 | PyGILState_Release(gstate); | |
906 | ||
907 | return ret; | |
908 | ||
909 | err: | |
910 | PyGILState_Release(gstate); | |
911 | ||
912 | return SRD_ERR; | |
913 | ||
914 | ret_9999: | |
915 | PyGILState_Release(gstate); | |
916 | ||
917 | return 9999; | |
918 | } | |
919 | ||
920 | /** | |
921 | * Create a SKIP condition list for condition-less .wait() calls. | |
922 | * | |
923 | * @param di Decoder instance. | |
924 | * @param count Number of samples to skip. | |
925 | * | |
926 | * @retval SRD_OK The new condition list was set successfully. | |
927 | * @retval SRD_ERR There was an error setting the new condition list. | |
928 | * The contents of di->condition_list are undefined. | |
929 | * | |
930 | * This routine is a reduced and specialized version of the @ref | |
931 | * set_new_condition_list() and @ref create_term_list() routines which | |
932 | * gets invoked when .wait() was called without specifications for | |
933 | * conditions. This minor duplication of the SKIP term list creation | |
934 | * simplifies the logic and avoids the creation of expensive Python | |
935 | * objects with "constant" values which the caller did not pass in the | |
936 | * first place. It results in maximum sharing of match handling code | |
937 | * paths. | |
938 | */ | |
939 | static int set_skip_condition(struct srd_decoder_inst *di, uint64_t count) | |
940 | { | |
941 | struct srd_term *term; | |
942 | GSList *term_list; | |
943 | ||
944 | condition_list_free(di); | |
945 | term = g_malloc(sizeof(*term)); | |
946 | term->type = SRD_TERM_SKIP; | |
947 | term->num_samples_to_skip = count; | |
948 | term->num_samples_already_skipped = 0; | |
949 | term_list = g_slist_append(NULL, term); | |
950 | di->condition_list = g_slist_append(di->condition_list, term_list); | |
951 | ||
952 | return SRD_OK; | |
953 | } | |
954 | ||
955 | static PyObject *Decoder_wait(PyObject *self, PyObject *args) | |
956 | { | |
957 | int ret; | |
958 | uint64_t skip_count; | |
959 | unsigned int i; | |
960 | gboolean found_match; | |
961 | struct srd_decoder_inst *di; | |
962 | PyObject *py_pinvalues, *py_matched, *py_samplenum; | |
963 | PyGILState_STATE gstate; | |
964 | ||
965 | if (!self || !args) | |
966 | return NULL; | |
967 | ||
968 | gstate = PyGILState_Ensure(); | |
969 | ||
970 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
971 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
972 | PyGILState_Release(gstate); | |
973 | Py_RETURN_NONE; | |
974 | } | |
975 | ||
976 | ret = set_new_condition_list(self, args); | |
977 | if (ret < 0) { | |
978 | srd_dbg("%s: %s: Aborting wait().", di->inst_id, __func__); | |
979 | goto err; | |
980 | } | |
981 | if (ret == 9999) { | |
982 | /* | |
983 | * Empty condition list, automatic match. Arrange for the | |
984 | * execution of regular match handling code paths such that | |
985 | * the next available sample is returned to the caller. | |
986 | * Make sure to skip one sample when "anywhere within the | |
987 | * stream", yet make sure to not skip sample number 0. | |
988 | */ | |
989 | if (di->abs_cur_samplenum) | |
990 | skip_count = 1; | |
991 | else if (!di->condition_list) | |
992 | skip_count = 0; | |
993 | else | |
994 | skip_count = 1; | |
995 | ret = set_skip_condition(di, skip_count); | |
996 | if (ret < 0) { | |
997 | srd_dbg("%s: %s: Cannot setup condition-less wait().", | |
998 | di->inst_id, __func__); | |
999 | goto err; | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | while (1) { | |
1004 | ||
1005 | Py_BEGIN_ALLOW_THREADS | |
1006 | ||
1007 | /* Wait for new samples to process, or termination request. */ | |
1008 | g_mutex_lock(&di->data_mutex); | |
1009 | while (!di->got_new_samples && !di->want_wait_terminate) | |
1010 | g_cond_wait(&di->got_new_samples_cond, &di->data_mutex); | |
1011 | ||
1012 | /* | |
1013 | * Check whether any of the current condition(s) match. | |
1014 | * Arrange for termination requests to take a code path which | |
1015 | * won't find new samples to process, pretends to have processed | |
1016 | * previously stored samples, and returns to the main thread, | |
1017 | * while the termination request still gets signalled. | |
1018 | */ | |
1019 | found_match = FALSE; | |
1020 | ||
1021 | /* Ignore return value for now, should never be negative. */ | |
1022 | (void)process_samples_until_condition_match(di, &found_match); | |
1023 | ||
1024 | Py_END_ALLOW_THREADS | |
1025 | ||
1026 | /* If there's a match, set self.samplenum etc. and return. */ | |
1027 | if (found_match) { | |
1028 | /* Set self.samplenum to the (absolute) sample number that matched. */ | |
1029 | py_samplenum = PyLong_FromUnsignedLongLong(di->abs_cur_samplenum); | |
1030 | PyObject_SetAttrString(di->py_inst, "samplenum", py_samplenum); | |
1031 | Py_DECREF(py_samplenum); | |
1032 | ||
1033 | if (di->match_array && di->match_array->len > 0) { | |
1034 | py_matched = PyTuple_New(di->match_array->len); | |
1035 | for (i = 0; i < di->match_array->len; i++) | |
1036 | PyTuple_SetItem(py_matched, i, PyBool_FromLong(di->match_array->data[i])); | |
1037 | PyObject_SetAttrString(di->py_inst, "matched", py_matched); | |
1038 | Py_DECREF(py_matched); | |
1039 | match_array_free(di); | |
1040 | } else { | |
1041 | PyObject_SetAttrString(di->py_inst, "matched", Py_None); | |
1042 | } | |
1043 | ||
1044 | py_pinvalues = get_current_pinvalues(di); | |
1045 | ||
1046 | g_mutex_unlock(&di->data_mutex); | |
1047 | ||
1048 | PyGILState_Release(gstate); | |
1049 | ||
1050 | return py_pinvalues; | |
1051 | } | |
1052 | ||
1053 | /* No match, reset state for the next chunk. */ | |
1054 | di->got_new_samples = FALSE; | |
1055 | di->handled_all_samples = TRUE; | |
1056 | di->abs_start_samplenum = 0; | |
1057 | di->abs_end_samplenum = 0; | |
1058 | di->inbuf = NULL; | |
1059 | di->inbuflen = 0; | |
1060 | ||
1061 | /* Signal the main thread that we handled all samples. */ | |
1062 | g_cond_signal(&di->handled_all_samples_cond); | |
1063 | ||
1064 | /* | |
1065 | * When termination of wait() and decode() was requested, | |
1066 | * then exit the loop after releasing the mutex. | |
1067 | */ | |
1068 | if (di->want_wait_terminate) { | |
1069 | srd_dbg("%s: %s: Will return from wait().", | |
1070 | di->inst_id, __func__); | |
1071 | g_mutex_unlock(&di->data_mutex); | |
1072 | goto err; | |
1073 | } | |
1074 | ||
1075 | g_mutex_unlock(&di->data_mutex); | |
1076 | } | |
1077 | ||
1078 | PyGILState_Release(gstate); | |
1079 | ||
1080 | Py_RETURN_NONE; | |
1081 | ||
1082 | err: | |
1083 | PyGILState_Release(gstate); | |
1084 | ||
1085 | return NULL; | |
1086 | } | |
1087 | ||
1088 | /** | |
1089 | * Return whether the specified channel was supplied to the decoder. | |
1090 | * | |
1091 | * @param self TODO. Must not be NULL. | |
1092 | * @param args TODO. Must not be NULL. | |
1093 | * | |
1094 | * @retval Py_True The channel has been supplied by the frontend. | |
1095 | * @retval Py_False The channel has been supplied by the frontend. | |
1096 | * @retval NULL An error occurred. | |
1097 | */ | |
1098 | static PyObject *Decoder_has_channel(PyObject *self, PyObject *args) | |
1099 | { | |
1100 | int idx, count; | |
1101 | struct srd_decoder_inst *di; | |
1102 | PyGILState_STATE gstate; | |
1103 | PyObject *bool_ret; | |
1104 | ||
1105 | if (!self || !args) | |
1106 | return NULL; | |
1107 | ||
1108 | gstate = PyGILState_Ensure(); | |
1109 | ||
1110 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
1111 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
1112 | goto err; | |
1113 | } | |
1114 | ||
1115 | /* | |
1116 | * Get the integer argument of self.has_channel(). Check for | |
1117 | * the range of supported PD input channel numbers. | |
1118 | */ | |
1119 | if (!PyArg_ParseTuple(args, "i", &idx)) { | |
1120 | /* Let Python raise this exception. */ | |
1121 | goto err; | |
1122 | } | |
1123 | ||
1124 | count = g_slist_length(di->decoder->channels) + | |
1125 | g_slist_length(di->decoder->opt_channels); | |
1126 | if (idx < 0 || idx >= count) { | |
1127 | srd_err("Invalid index %d, PD channel count %d.", idx, count); | |
1128 | PyErr_SetString(PyExc_IndexError, "invalid channel index"); | |
1129 | goto err; | |
1130 | } | |
1131 | ||
1132 | PyGILState_Release(gstate); | |
1133 | ||
1134 | bool_ret = (di->dec_channelmap[idx] == -1) ? Py_False : Py_True; | |
1135 | Py_INCREF(bool_ret); | |
1136 | return bool_ret; | |
1137 | ||
1138 | err: | |
1139 | PyGILState_Release(gstate); | |
1140 | ||
1141 | return NULL; | |
1142 | } | |
1143 | ||
1144 | static PyMethodDef Decoder_methods[] = { | |
1145 | { "put", Decoder_put, METH_VARARGS, | |
1146 | "Accepts a dictionary with the following keys: startsample, endsample, data" }, | |
1147 | { "register", (PyCFunction)(void(*)(void))Decoder_register, METH_VARARGS|METH_KEYWORDS, | |
1148 | "Register a new output stream" }, | |
1149 | { "wait", Decoder_wait, METH_VARARGS, | |
1150 | "Wait for one or more conditions to occur" }, | |
1151 | { "has_channel", Decoder_has_channel, METH_VARARGS, | |
1152 | "Report whether a channel was supplied" }, | |
1153 | {NULL, NULL, 0, NULL} | |
1154 | }; | |
1155 | ||
1156 | /** | |
1157 | * Create the sigrokdecode.Decoder type. | |
1158 | * | |
1159 | * @return The new type object. | |
1160 | * | |
1161 | * @private | |
1162 | */ | |
1163 | SRD_PRIV PyObject *srd_Decoder_type_new(void) | |
1164 | { | |
1165 | PyType_Spec spec; | |
1166 | PyType_Slot slots[] = { | |
1167 | { Py_tp_doc, "sigrok Decoder base class" }, | |
1168 | { Py_tp_methods, Decoder_methods }, | |
1169 | { Py_tp_new, (void *)&PyType_GenericNew }, | |
1170 | { 0, NULL } | |
1171 | }; | |
1172 | PyObject *py_obj; | |
1173 | PyGILState_STATE gstate; | |
1174 | ||
1175 | gstate = PyGILState_Ensure(); | |
1176 | ||
1177 | spec.name = "sigrokdecode.Decoder"; | |
1178 | spec.basicsize = sizeof(srd_Decoder); | |
1179 | spec.itemsize = 0; | |
1180 | spec.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE; | |
1181 | spec.slots = slots; | |
1182 | ||
1183 | py_obj = PyType_FromSpec(&spec); | |
1184 | ||
1185 | PyGILState_Release(gstate); | |
1186 | ||
1187 | return py_obj; | |
1188 | } |