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Commit | Line | Data |
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d0a0ed03 | 1 | /* |
50bd5d25 | 2 | * This file is part of the libsigrokdecode project. |
d0a0ed03 BV |
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 | ||
36784362 | 20 | #include <config.h> |
f6c7eade MC |
21 | #include "libsigrokdecode-internal.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */ |
22 | #include "libsigrokdecode.h" | |
dbeaab27 | 23 | #include <inttypes.h> |
d0a0ed03 | 24 | |
17475b09 UH |
25 | typedef struct { |
26 | PyObject_HEAD | |
27 | } srd_Decoder; | |
28 | ||
201a85a8 DE |
29 | /* This is only used for nicer srd_dbg() output. |
30 | */ | |
31 | static const char *output_type_name(unsigned int idx) | |
32 | { | |
33 | static const char names[][16] = { | |
34 | "OUTPUT_ANN", | |
35 | "OUTPUT_PYTHON", | |
36 | "OUTPUT_BINARY", | |
37 | "OUTPUT_META", | |
38 | "(invalid)" | |
39 | }; | |
40 | return names[MIN(idx, G_N_ELEMENTS(names) - 1)]; | |
41 | } | |
58572aed | 42 | |
c1b2bbc1 GS |
43 | static void release_annotation(struct srd_proto_data_annotation *pda) |
44 | { | |
45 | if (!pda) | |
46 | return; | |
47 | if (pda->ann_text) | |
48 | g_strfreev(pda->ann_text); | |
49 | g_free(pda); | |
50 | } | |
51 | ||
4f75f1c1 | 52 | static int convert_annotation(struct srd_decoder_inst *di, PyObject *obj, |
0b922460 | 53 | struct srd_proto_data *pdata) |
d0a0ed03 BV |
54 | { |
55 | PyObject *py_tmp; | |
56 | struct srd_pd_output *pdo; | |
0b922460 | 57 | struct srd_proto_data_annotation *pda; |
280d554c | 58 | int ann_class; |
0b922460 | 59 | char **ann_text; |
514b2edc UH |
60 | PyGILState_STATE gstate; |
61 | ||
62 | gstate = PyGILState_Ensure(); | |
d0a0ed03 | 63 | |
280d554c | 64 | /* Should be a list of [annotation class, [string, ...]]. */ |
0679f5bf | 65 | if (!PyList_Check(obj)) { |
201a85a8 | 66 | srd_err("Protocol decoder %s submitted an annotation that" |
0679f5bf | 67 | " is not a list", di->decoder->name); |
514b2edc | 68 | goto err; |
d0a0ed03 BV |
69 | } |
70 | ||
361fdcaa | 71 | /* Should have 2 elements. */ |
d0a0ed03 | 72 | if (PyList_Size(obj) != 2) { |
c9bfccc6 | 73 | srd_err("Protocol decoder %s submitted annotation list with " |
4916b173 | 74 | "%zd elements instead of 2", di->decoder->name, |
c9bfccc6 | 75 | PyList_Size(obj)); |
514b2edc | 76 | goto err; |
d0a0ed03 BV |
77 | } |
78 | ||
c9bfccc6 UH |
79 | /* |
80 | * The first element should be an integer matching a previously | |
280d554c | 81 | * registered annotation class. |
c9bfccc6 | 82 | */ |
d0a0ed03 BV |
83 | py_tmp = PyList_GetItem(obj, 0); |
84 | if (!PyLong_Check(py_tmp)) { | |
c9bfccc6 UH |
85 | srd_err("Protocol decoder %s submitted annotation list, but " |
86 | "first element was not an integer.", di->decoder->name); | |
514b2edc | 87 | goto err; |
d0a0ed03 | 88 | } |
280d554c UH |
89 | ann_class = PyLong_AsLong(py_tmp); |
90 | if (!(pdo = g_slist_nth_data(di->decoder->annotations, ann_class))) { | |
d906d3f9 | 91 | srd_err("Protocol decoder %s submitted data to unregistered " |
280d554c | 92 | "annotation class %d.", di->decoder->name, ann_class); |
514b2edc | 93 | goto err; |
d0a0ed03 | 94 | } |
d0a0ed03 | 95 | |
361fdcaa | 96 | /* Second element must be a list. */ |
d0a0ed03 BV |
97 | py_tmp = PyList_GetItem(obj, 1); |
98 | if (!PyList_Check(py_tmp)) { | |
d906d3f9 | 99 | srd_err("Protocol decoder %s submitted annotation list, but " |
c9bfccc6 | 100 | "second element was not a list.", di->decoder->name); |
514b2edc | 101 | goto err; |
d0a0ed03 | 102 | } |
62a2b15c | 103 | if (py_strseq_to_char(py_tmp, &ann_text) != SRD_OK) { |
d906d3f9 | 104 | srd_err("Protocol decoder %s submitted annotation list, but " |
c9bfccc6 | 105 | "second element was malformed.", di->decoder->name); |
514b2edc | 106 | goto err; |
d0a0ed03 BV |
107 | } |
108 | ||
077fa8ac | 109 | pda = g_malloc(sizeof(struct srd_proto_data_annotation)); |
280d554c | 110 | pda->ann_class = ann_class; |
0b922460 BV |
111 | pda->ann_text = ann_text; |
112 | pdata->data = pda; | |
113 | ||
514b2edc UH |
114 | PyGILState_Release(gstate); |
115 | ||
d0a0ed03 | 116 | return SRD_OK; |
514b2edc UH |
117 | |
118 | err: | |
119 | PyGILState_Release(gstate); | |
120 | ||
121 | return SRD_ERR_PYTHON; | |
d0a0ed03 BV |
122 | } |
123 | ||
c1b2bbc1 GS |
124 | static void release_binary(struct srd_proto_data_binary *pdb) |
125 | { | |
126 | if (!pdb) | |
127 | return; | |
8390f85a | 128 | g_free((void *)pdb->data); |
c1b2bbc1 GS |
129 | g_free(pdb); |
130 | } | |
131 | ||
d75d8a7c BV |
132 | static int convert_binary(struct srd_decoder_inst *di, PyObject *obj, |
133 | struct srd_proto_data *pdata) | |
134 | { | |
135 | struct srd_proto_data_binary *pdb; | |
136 | PyObject *py_tmp; | |
137 | Py_ssize_t size; | |
138 | int bin_class; | |
139 | char *class_name, *buf; | |
514b2edc UH |
140 | PyGILState_STATE gstate; |
141 | ||
142 | gstate = PyGILState_Ensure(); | |
d75d8a7c | 143 | |
2824e811 UH |
144 | /* Should be a list of [binary class, bytes]. */ |
145 | if (!PyList_Check(obj)) { | |
146 | srd_err("Protocol decoder %s submitted non-list for SRD_OUTPUT_BINARY.", | |
201a85a8 | 147 | di->decoder->name); |
514b2edc | 148 | goto err; |
d75d8a7c BV |
149 | } |
150 | ||
151 | /* Should have 2 elements. */ | |
2824e811 UH |
152 | if (PyList_Size(obj) != 2) { |
153 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY list " | |
4916b173 | 154 | "with %zd elements instead of 2", di->decoder->name, |
d75d8a7c | 155 | PyList_Size(obj)); |
514b2edc | 156 | goto err; |
d75d8a7c BV |
157 | } |
158 | ||
159 | /* The first element should be an integer. */ | |
2824e811 | 160 | py_tmp = PyList_GetItem(obj, 0); |
d75d8a7c | 161 | if (!PyLong_Check(py_tmp)) { |
2824e811 | 162 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY list, " |
d75d8a7c | 163 | "but first element was not an integer.", di->decoder->name); |
514b2edc | 164 | goto err; |
d75d8a7c BV |
165 | } |
166 | bin_class = PyLong_AsLong(py_tmp); | |
167 | if (!(class_name = g_slist_nth_data(di->decoder->binary, bin_class))) { | |
168 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY with " | |
169 | "unregistered binary class %d.", di->decoder->name, bin_class); | |
514b2edc | 170 | goto err; |
d75d8a7c BV |
171 | } |
172 | ||
173 | /* Second element should be bytes. */ | |
2824e811 | 174 | py_tmp = PyList_GetItem(obj, 1); |
d75d8a7c | 175 | if (!PyBytes_Check(py_tmp)) { |
2824e811 | 176 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY list, " |
d75d8a7c | 177 | "but second element was not bytes.", di->decoder->name); |
514b2edc | 178 | goto err; |
d75d8a7c BV |
179 | } |
180 | ||
181 | /* Consider an empty set of bytes a bug. */ | |
182 | if (PyBytes_Size(py_tmp) == 0) { | |
183 | srd_err("Protocol decoder %s submitted SRD_OUTPUT_BINARY " | |
184 | "with empty data set.", di->decoder->name); | |
514b2edc | 185 | goto err; |
d75d8a7c BV |
186 | } |
187 | ||
d75d8a7c | 188 | if (PyBytes_AsStringAndSize(py_tmp, &buf, &size) == -1) |
514b2edc UH |
189 | goto err; |
190 | ||
191 | PyGILState_Release(gstate); | |
192 | ||
8ad9a3e4 | 193 | pdb = g_malloc(sizeof(struct srd_proto_data_binary)); |
d75d8a7c BV |
194 | pdb->bin_class = bin_class; |
195 | pdb->size = size; | |
48518538 UH |
196 | if (!(pdb->data = g_try_malloc(pdb->size))) { |
197 | g_free(pdb); | |
d75d8a7c | 198 | return SRD_ERR_MALLOC; |
48518538 | 199 | } |
d75d8a7c BV |
200 | memcpy((void *)pdb->data, (const void *)buf, pdb->size); |
201 | pdata->data = pdb; | |
202 | ||
203 | return SRD_OK; | |
514b2edc UH |
204 | |
205 | err: | |
206 | PyGILState_Release(gstate); | |
207 | ||
208 | return SRD_ERR_PYTHON; | |
d75d8a7c BV |
209 | } |
210 | ||
7ee0c40b BV |
211 | static int convert_meta(struct srd_proto_data *pdata, PyObject *obj) |
212 | { | |
213 | long long intvalue; | |
214 | double dvalue; | |
514b2edc UH |
215 | PyGILState_STATE gstate; |
216 | ||
217 | gstate = PyGILState_Ensure(); | |
7ee0c40b BV |
218 | |
219 | if (pdata->pdo->meta_type == G_VARIANT_TYPE_INT64) { | |
220 | if (!PyLong_Check(obj)) { | |
221 | PyErr_Format(PyExc_TypeError, "This output was registered " | |
201a85a8 | 222 | "as 'int', but something else was passed."); |
514b2edc | 223 | goto err; |
7ee0c40b BV |
224 | } |
225 | intvalue = PyLong_AsLongLong(obj); | |
226 | if (PyErr_Occurred()) | |
514b2edc | 227 | goto err; |
7ee0c40b BV |
228 | pdata->data = g_variant_new_int64(intvalue); |
229 | } else if (pdata->pdo->meta_type == G_VARIANT_TYPE_DOUBLE) { | |
230 | if (!PyFloat_Check(obj)) { | |
231 | PyErr_Format(PyExc_TypeError, "This output was registered " | |
201a85a8 | 232 | "as 'float', but something else was passed."); |
514b2edc | 233 | goto err; |
7ee0c40b BV |
234 | } |
235 | dvalue = PyFloat_AsDouble(obj); | |
236 | if (PyErr_Occurred()) | |
514b2edc | 237 | goto err; |
7ee0c40b BV |
238 | pdata->data = g_variant_new_double(dvalue); |
239 | } | |
240 | ||
514b2edc UH |
241 | PyGILState_Release(gstate); |
242 | ||
7ee0c40b | 243 | return SRD_OK; |
514b2edc UH |
244 | |
245 | err: | |
246 | PyGILState_Release(gstate); | |
247 | ||
248 | return SRD_ERR_PYTHON; | |
7ee0c40b BV |
249 | } |
250 | ||
287e2788 UH |
251 | static void release_meta(GVariant *gvar) |
252 | { | |
253 | if (!gvar) | |
254 | return; | |
255 | g_variant_unref(gvar); | |
256 | } | |
257 | ||
d0a0ed03 BV |
258 | static PyObject *Decoder_put(PyObject *self, PyObject *args) |
259 | { | |
260 | GSList *l; | |
4f75f1c1 | 261 | PyObject *py_data, *py_res; |
a8b72b05 | 262 | struct srd_decoder_inst *di, *next_di; |
d0a0ed03 | 263 | struct srd_pd_output *pdo; |
8a9f60b1 | 264 | struct srd_proto_data pdata; |
d0a0ed03 BV |
265 | uint64_t start_sample, end_sample; |
266 | int output_id; | |
2994587f | 267 | struct srd_pd_callback *cb; |
514b2edc UH |
268 | PyGILState_STATE gstate; |
269 | ||
287e2788 UH |
270 | py_data = NULL; |
271 | ||
514b2edc | 272 | gstate = PyGILState_Ensure(); |
d0a0ed03 | 273 | |
a8b72b05 | 274 | if (!(di = srd_inst_find_by_obj(NULL, self))) { |
58572aed | 275 | /* Shouldn't happen. */ |
7a1712c4 | 276 | srd_dbg("put(): self instance not found."); |
514b2edc | 277 | goto err; |
58572aed | 278 | } |
d0a0ed03 | 279 | |
c9bfccc6 | 280 | if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample, |
3d14e7c9 | 281 | &output_id, &py_data)) { |
c9bfccc6 UH |
282 | /* |
283 | * This throws an exception, but by returning NULL here we let | |
284 | * Python raise it. This results in a much better trace in | |
285 | * controller.c on the decode() method call. | |
286 | */ | |
514b2edc | 287 | goto err; |
c9bfccc6 | 288 | } |
d0a0ed03 BV |
289 | |
290 | if (!(l = g_slist_nth(di->pd_output, output_id))) { | |
d906d3f9 | 291 | srd_err("Protocol decoder %s submitted invalid output ID %d.", |
c9bfccc6 | 292 | di->decoder->name, output_id); |
514b2edc | 293 | goto err; |
d0a0ed03 BV |
294 | } |
295 | pdo = l->data; | |
296 | ||
1c2b0d0b | 297 | srd_spew("Instance %s put %" PRIu64 "-%" PRIu64 " %s on oid %d.", |
a8b72b05 | 298 | di->inst_id, start_sample, end_sample, |
201a85a8 | 299 | output_type_name(pdo->output_type), output_id); |
58572aed | 300 | |
8a9f60b1 UH |
301 | pdata.start_sample = start_sample; |
302 | pdata.end_sample = end_sample; | |
303 | pdata.pdo = pdo; | |
304 | pdata.data = NULL; | |
d0a0ed03 BV |
305 | |
306 | switch (pdo->output_type) { | |
307 | case SRD_OUTPUT_ANN: | |
308 | /* Annotations are only fed to callbacks. */ | |
32cfb920 | 309 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { |
d75d8a7c | 310 | /* Convert from PyDict to srd_proto_data_annotation. */ |
8a9f60b1 | 311 | if (convert_annotation(di, py_data, &pdata) != SRD_OK) { |
d0a0ed03 BV |
312 | /* An error was already logged. */ |
313 | break; | |
314 | } | |
514b2edc | 315 | Py_BEGIN_ALLOW_THREADS |
8a9f60b1 | 316 | cb->cb(&pdata, cb->cb_data); |
514b2edc | 317 | Py_END_ALLOW_THREADS |
c1b2bbc1 | 318 | release_annotation(pdata.data); |
d0a0ed03 BV |
319 | } |
320 | break; | |
f2a5df42 | 321 | case SRD_OUTPUT_PYTHON: |
d0a0ed03 BV |
322 | for (l = di->next_di; l; l = l->next) { |
323 | next_di = l->data; | |
4916b173 | 324 | srd_spew("Sending %" PRIu64 "-%" PRIu64 " to instance %s", |
3d14e7c9 | 325 | start_sample, end_sample, next_di->inst_id); |
c9bfccc6 | 326 | if (!(py_res = PyObject_CallMethod( |
3d14e7c9 BV |
327 | next_di->py_inst, "decode", "KKO", start_sample, |
328 | end_sample, py_data))) { | |
201a85a8 | 329 | srd_exception_catch("Calling %s decode() failed", |
3d14e7c9 | 330 | next_di->inst_id); |
d0a0ed03 BV |
331 | } |
332 | Py_XDECREF(py_res); | |
333 | } | |
3d14e7c9 BV |
334 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { |
335 | /* Frontends aren't really supposed to get Python | |
336 | * callbacks, but it's useful for testing. */ | |
8a9f60b1 UH |
337 | pdata.data = py_data; |
338 | cb->cb(&pdata, cb->cb_data); | |
3d14e7c9 | 339 | } |
d0a0ed03 BV |
340 | break; |
341 | case SRD_OUTPUT_BINARY: | |
d75d8a7c BV |
342 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { |
343 | /* Convert from PyDict to srd_proto_data_binary. */ | |
8a9f60b1 | 344 | if (convert_binary(di, py_data, &pdata) != SRD_OK) { |
d75d8a7c BV |
345 | /* An error was already logged. */ |
346 | break; | |
347 | } | |
514b2edc | 348 | Py_BEGIN_ALLOW_THREADS |
8a9f60b1 | 349 | cb->cb(&pdata, cb->cb_data); |
514b2edc | 350 | Py_END_ALLOW_THREADS |
c1b2bbc1 | 351 | release_binary(pdata.data); |
d75d8a7c | 352 | } |
d0a0ed03 | 353 | break; |
7ee0c40b BV |
354 | case SRD_OUTPUT_META: |
355 | if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) { | |
356 | /* Annotations need converting from PyObject. */ | |
8a9f60b1 | 357 | if (convert_meta(&pdata, py_data) != SRD_OK) { |
7ee0c40b BV |
358 | /* An exception was already set up. */ |
359 | break; | |
360 | } | |
514b2edc | 361 | Py_BEGIN_ALLOW_THREADS |
8a9f60b1 | 362 | cb->cb(&pdata, cb->cb_data); |
514b2edc | 363 | Py_END_ALLOW_THREADS |
287e2788 | 364 | release_meta(pdata.data); |
7ee0c40b BV |
365 | } |
366 | break; | |
d0a0ed03 | 367 | default: |
d906d3f9 | 368 | srd_err("Protocol decoder %s submitted invalid output type %d.", |
c9bfccc6 | 369 | di->decoder->name, pdo->output_type); |
d0a0ed03 BV |
370 | break; |
371 | } | |
372 | ||
514b2edc UH |
373 | PyGILState_Release(gstate); |
374 | ||
d0a0ed03 | 375 | Py_RETURN_NONE; |
514b2edc UH |
376 | |
377 | err: | |
378 | PyGILState_Release(gstate); | |
379 | ||
380 | return NULL; | |
d0a0ed03 BV |
381 | } |
382 | ||
7ee0c40b BV |
383 | static PyObject *Decoder_register(PyObject *self, PyObject *args, |
384 | PyObject *kwargs) | |
d0a0ed03 | 385 | { |
a8b72b05 | 386 | struct srd_decoder_inst *di; |
7ee0c40b BV |
387 | struct srd_pd_output *pdo; |
388 | PyObject *py_new_output_id; | |
389 | PyTypeObject *meta_type_py; | |
390 | const GVariantType *meta_type_gv; | |
391 | int output_type; | |
392 | char *proto_id, *meta_name, *meta_descr; | |
393 | char *keywords[] = {"output_type", "proto_id", "meta", NULL}; | |
514b2edc | 394 | PyGILState_STATE gstate; |
7d82e3c1 GS |
395 | gboolean is_meta; |
396 | GSList *l; | |
397 | struct srd_pd_output *cmp; | |
514b2edc UH |
398 | |
399 | gstate = PyGILState_Ensure(); | |
7ee0c40b BV |
400 | |
401 | meta_type_py = NULL; | |
402 | meta_type_gv = NULL; | |
403 | meta_name = meta_descr = NULL; | |
d0a0ed03 | 404 | |
a8b72b05 | 405 | if (!(di = srd_inst_find_by_obj(NULL, self))) { |
d0a0ed03 | 406 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); |
514b2edc | 407 | goto err; |
d0a0ed03 BV |
408 | } |
409 | ||
7ee0c40b BV |
410 | /* Default to instance id, which defaults to class id. */ |
411 | proto_id = di->inst_id; | |
412 | if (!PyArg_ParseTupleAndKeywords(args, kwargs, "i|s(Oss)", keywords, | |
413 | &output_type, &proto_id, | |
414 | &meta_type_py, &meta_name, &meta_descr)) { | |
511e2123 | 415 | /* Let Python raise this exception. */ |
514b2edc | 416 | goto err; |
d0a0ed03 BV |
417 | } |
418 | ||
7ee0c40b | 419 | /* Check if the meta value's type is supported. */ |
7d82e3c1 GS |
420 | is_meta = output_type == SRD_OUTPUT_META; |
421 | if (is_meta) { | |
7ee0c40b BV |
422 | if (meta_type_py == &PyLong_Type) |
423 | meta_type_gv = G_VARIANT_TYPE_INT64; | |
424 | else if (meta_type_py == &PyFloat_Type) | |
425 | meta_type_gv = G_VARIANT_TYPE_DOUBLE; | |
426 | else { | |
201a85a8 | 427 | PyErr_Format(PyExc_TypeError, "Unsupported type."); |
514b2edc | 428 | goto err; |
7ee0c40b BV |
429 | } |
430 | } | |
431 | ||
7d82e3c1 GS |
432 | pdo = NULL; |
433 | for (l = di->pd_output; l; l = l->next) { | |
434 | cmp = l->data; | |
435 | if (cmp->output_type != output_type) | |
436 | continue; | |
437 | if (strcmp(cmp->proto_id, proto_id) != 0) | |
438 | continue; | |
439 | if (is_meta && cmp->meta_type != meta_type_gv) | |
440 | continue; | |
441 | if (is_meta && strcmp(cmp->meta_name, meta_name) != 0) | |
442 | continue; | |
443 | if (is_meta && strcmp(cmp->meta_descr, meta_descr) != 0) | |
444 | continue; | |
445 | pdo = cmp; | |
446 | break; | |
447 | } | |
448 | if (pdo) { | |
449 | py_new_output_id = Py_BuildValue("i", pdo->pdo_id); | |
450 | PyGILState_Release(gstate); | |
451 | return py_new_output_id; | |
452 | } | |
453 | ||
7ee0c40b BV |
454 | srd_dbg("Instance %s creating new output type %d for %s.", |
455 | di->inst_id, output_type, proto_id); | |
456 | ||
077fa8ac | 457 | pdo = g_malloc(sizeof(struct srd_pd_output)); |
7ee0c40b BV |
458 | |
459 | /* pdo_id is just a simple index, nothing is deleted from this list anyway. */ | |
460 | pdo->pdo_id = g_slist_length(di->pd_output); | |
461 | pdo->output_type = output_type; | |
462 | pdo->di = di; | |
463 | pdo->proto_id = g_strdup(proto_id); | |
464 | ||
465 | if (output_type == SRD_OUTPUT_META) { | |
466 | pdo->meta_type = meta_type_gv; | |
467 | pdo->meta_name = g_strdup(meta_name); | |
468 | pdo->meta_descr = g_strdup(meta_descr); | |
469 | } | |
470 | ||
471 | di->pd_output = g_slist_append(di->pd_output, pdo); | |
472 | py_new_output_id = Py_BuildValue("i", pdo->pdo_id); | |
473 | ||
514b2edc UH |
474 | PyGILState_Release(gstate); |
475 | ||
7ee0c40b | 476 | return py_new_output_id; |
514b2edc UH |
477 | |
478 | err: | |
479 | PyGILState_Release(gstate); | |
480 | ||
481 | return NULL; | |
7ee0c40b BV |
482 | } |
483 | ||
21dfd91d UH |
484 | static int get_term_type(const char *v) |
485 | { | |
486 | switch (v[0]) { | |
487 | case 'h': | |
488 | return SRD_TERM_HIGH; | |
489 | case 'l': | |
490 | return SRD_TERM_LOW; | |
491 | case 'r': | |
492 | return SRD_TERM_RISING_EDGE; | |
493 | case 'f': | |
494 | return SRD_TERM_FALLING_EDGE; | |
495 | case 'e': | |
496 | return SRD_TERM_EITHER_EDGE; | |
497 | case 'n': | |
498 | return SRD_TERM_NO_EDGE; | |
499 | } | |
500 | ||
501 | return -1; | |
502 | } | |
503 | ||
504 | /** | |
505 | * Get the pin values at the current sample number. | |
506 | * | |
507 | * @param di The decoder instance to use. Must not be NULL. | |
508 | * The number of channels must be >= 1. | |
509 | * | |
510 | * @return A newly allocated PyTuple containing the pin values at the | |
511 | * current sample number. | |
512 | */ | |
513 | static PyObject *get_current_pinvalues(const struct srd_decoder_inst *di) | |
514 | { | |
515 | int i; | |
516 | uint8_t sample; | |
517 | const uint8_t *sample_pos; | |
518 | int byte_offset, bit_offset; | |
519 | PyObject *py_pinvalues; | |
514b2edc UH |
520 | PyGILState_STATE gstate; |
521 | ||
21dfd91d UH |
522 | if (!di) { |
523 | srd_err("Invalid decoder instance."); | |
524 | return NULL; | |
525 | } | |
526 | ||
73578d2e UH |
527 | gstate = PyGILState_Ensure(); |
528 | ||
21dfd91d UH |
529 | py_pinvalues = PyTuple_New(di->dec_num_channels); |
530 | ||
531 | for (i = 0; i < di->dec_num_channels; i++) { | |
532 | /* A channelmap value of -1 means "unused optional channel". */ | |
533 | if (di->dec_channelmap[i] == -1) { | |
534 | /* Value of unused channel is 0xff, instead of 0 or 1. */ | |
535 | PyTuple_SetItem(py_pinvalues, i, PyLong_FromLong(0xff)); | |
536 | } else { | |
4564e8e5 | 537 | sample_pos = di->inbuf + ((di->abs_cur_samplenum - di->abs_start_samplenum) * di->data_unitsize); |
21dfd91d UH |
538 | byte_offset = di->dec_channelmap[i] / 8; |
539 | bit_offset = di->dec_channelmap[i] % 8; | |
540 | sample = *(sample_pos + byte_offset) & (1 << bit_offset) ? 1 : 0; | |
541 | PyTuple_SetItem(py_pinvalues, i, PyLong_FromLong(sample)); | |
542 | } | |
543 | } | |
544 | ||
514b2edc UH |
545 | PyGILState_Release(gstate); |
546 | ||
21dfd91d UH |
547 | return py_pinvalues; |
548 | } | |
549 | ||
550 | /** | |
551 | * Create a list of terms in the specified condition. | |
552 | * | |
553 | * If there are no terms in the condition, 'term_list' will be NULL. | |
554 | * | |
555 | * @param py_dict A Python dict containing terms. Must not be NULL. | |
556 | * @param term_list Pointer to a GSList which will be set to the newly | |
557 | * created list of terms. Must not be NULL. | |
558 | * | |
559 | * @return SRD_OK upon success, a negative error code otherwise. | |
560 | */ | |
561 | static int create_term_list(PyObject *py_dict, GSList **term_list) | |
562 | { | |
563 | Py_ssize_t pos = 0; | |
564 | PyObject *py_key, *py_value; | |
565 | struct srd_term *term; | |
566 | uint64_t num_samples_to_skip; | |
567 | char *term_str; | |
514b2edc | 568 | PyGILState_STATE gstate; |
21dfd91d UH |
569 | |
570 | if (!py_dict || !term_list) | |
571 | return SRD_ERR_ARG; | |
572 | ||
573 | /* "Create" an empty GSList of terms. */ | |
574 | *term_list = NULL; | |
575 | ||
514b2edc UH |
576 | gstate = PyGILState_Ensure(); |
577 | ||
21dfd91d UH |
578 | /* Iterate over all items in the current dict. */ |
579 | while (PyDict_Next(py_dict, &pos, &py_key, &py_value)) { | |
580 | /* Check whether the current key is a string or a number. */ | |
581 | if (PyLong_Check(py_key)) { | |
582 | /* The key is a number. */ | |
583 | /* TODO: Check if the number is a valid channel. */ | |
584 | /* Get the value string. */ | |
585 | if ((py_pydictitem_as_str(py_dict, py_key, &term_str)) != SRD_OK) { | |
586 | srd_err("Failed to get the value."); | |
514b2edc | 587 | goto err; |
21dfd91d | 588 | } |
35c10c0e | 589 | term = g_malloc(sizeof(struct srd_term)); |
21dfd91d UH |
590 | term->type = get_term_type(term_str); |
591 | term->channel = PyLong_AsLong(py_key); | |
592 | g_free(term_str); | |
593 | } else if (PyUnicode_Check(py_key)) { | |
594 | /* The key is a string. */ | |
595 | /* TODO: Check if it's "skip". */ | |
596 | if ((py_pydictitem_as_long(py_dict, py_key, &num_samples_to_skip)) != SRD_OK) { | |
597 | srd_err("Failed to get number of samples to skip."); | |
514b2edc | 598 | goto err; |
21dfd91d | 599 | } |
35c10c0e | 600 | term = g_malloc(sizeof(struct srd_term)); |
21dfd91d UH |
601 | term->type = SRD_TERM_SKIP; |
602 | term->num_samples_to_skip = num_samples_to_skip; | |
603 | term->num_samples_already_skipped = 0; | |
604 | } else { | |
605 | srd_err("Term key is neither a string nor a number."); | |
514b2edc | 606 | goto err; |
21dfd91d UH |
607 | } |
608 | ||
609 | /* Add the term to the list of terms. */ | |
610 | *term_list = g_slist_append(*term_list, term); | |
611 | } | |
612 | ||
514b2edc UH |
613 | PyGILState_Release(gstate); |
614 | ||
21dfd91d | 615 | return SRD_OK; |
514b2edc UH |
616 | |
617 | err: | |
618 | PyGILState_Release(gstate); | |
619 | ||
620 | return SRD_ERR; | |
21dfd91d UH |
621 | } |
622 | ||
623 | /** | |
624 | * Replace the current condition list with the new one. | |
625 | * | |
626 | * @param self TODO. Must not be NULL. | |
627 | * @param args TODO. Must not be NULL. | |
628 | * | |
629 | * @retval SRD_OK The new condition list was set successfully. | |
630 | * @retval SRD_ERR There was an error setting the new condition list. | |
631 | * The contents of di->condition_list are undefined. | |
632 | * @retval 9999 TODO. | |
633 | */ | |
634 | static int set_new_condition_list(PyObject *self, PyObject *args) | |
635 | { | |
636 | struct srd_decoder_inst *di; | |
637 | GSList *term_list; | |
638 | PyObject *py_conditionlist, *py_conds, *py_dict; | |
639 | int i, num_conditions, ret; | |
514b2edc | 640 | PyGILState_STATE gstate; |
21dfd91d UH |
641 | |
642 | if (!self || !args) | |
643 | return SRD_ERR_ARG; | |
644 | ||
514b2edc UH |
645 | gstate = PyGILState_Ensure(); |
646 | ||
21dfd91d UH |
647 | /* Get the decoder instance. */ |
648 | if (!(di = srd_inst_find_by_obj(NULL, self))) { | |
649 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
514b2edc | 650 | goto err; |
21dfd91d UH |
651 | } |
652 | ||
04383ea8 GS |
653 | /* |
654 | * Return an error condition from .wait() when termination is | |
655 | * requested, such that decode() will terminate. | |
656 | */ | |
657 | if (di->want_wait_terminate) { | |
658 | srd_dbg("%s: %s: Skip (want_term).", di->inst_id, __func__); | |
514b2edc | 659 | goto err; |
04383ea8 GS |
660 | } |
661 | ||
6e19f325 GS |
662 | /* |
663 | * Parse the argument of self.wait() into 'py_conds', and check | |
664 | * the data type. The argument is optional, None is assumed in | |
665 | * its absence. None or an empty dict or an empty list mean that | |
666 | * there is no condition, and the next available sample shall | |
667 | * get returned to the caller. | |
668 | */ | |
669 | py_conds = Py_None; | |
670 | if (!PyArg_ParseTuple(args, "|O", &py_conds)) { | |
21dfd91d | 671 | /* Let Python raise this exception. */ |
514b2edc | 672 | goto err; |
21dfd91d | 673 | } |
6e19f325 GS |
674 | if (py_conds == Py_None) { |
675 | /* 'py_conds' is None. */ | |
514b2edc | 676 | goto ret_9999; |
6e19f325 | 677 | } else if (PyList_Check(py_conds)) { |
21dfd91d UH |
678 | /* 'py_conds' is a list. */ |
679 | py_conditionlist = py_conds; | |
680 | num_conditions = PyList_Size(py_conditionlist); | |
681 | if (num_conditions == 0) | |
514b2edc | 682 | goto ret_9999; /* The PD invoked self.wait([]). */ |
066fbafd | 683 | Py_IncRef(py_conditionlist); |
21dfd91d UH |
684 | } else if (PyDict_Check(py_conds)) { |
685 | /* 'py_conds' is a dict. */ | |
686 | if (PyDict_Size(py_conds) == 0) | |
514b2edc | 687 | goto ret_9999; /* The PD invoked self.wait({}). */ |
21dfd91d UH |
688 | /* Make a list and put the dict in there for convenience. */ |
689 | py_conditionlist = PyList_New(1); | |
01f15bdf | 690 | Py_IncRef(py_conds); |
21dfd91d UH |
691 | PyList_SetItem(py_conditionlist, 0, py_conds); |
692 | num_conditions = 1; | |
693 | } else { | |
694 | srd_err("Condition list is neither a list nor a dict."); | |
514b2edc | 695 | goto err; |
21dfd91d UH |
696 | } |
697 | ||
698 | /* Free the old condition list. */ | |
699 | condition_list_free(di); | |
700 | ||
701 | ret = SRD_OK; | |
702 | ||
703 | /* Iterate over the conditions, set di->condition_list accordingly. */ | |
704 | for (i = 0; i < num_conditions; i++) { | |
705 | /* Get a condition (dict) from the condition list. */ | |
706 | py_dict = PyList_GetItem(py_conditionlist, i); | |
707 | if (!PyDict_Check(py_dict)) { | |
708 | srd_err("Condition is not a dict."); | |
709 | ret = SRD_ERR; | |
710 | break; | |
711 | } | |
712 | ||
713 | /* Create the list of terms in this condition. */ | |
714 | if ((ret = create_term_list(py_dict, &term_list)) < 0) | |
715 | break; | |
716 | ||
717 | /* Add the new condition to the PD instance's condition list. */ | |
718 | di->condition_list = g_slist_append(di->condition_list, term_list); | |
719 | } | |
720 | ||
721 | Py_DecRef(py_conditionlist); | |
722 | ||
514b2edc UH |
723 | PyGILState_Release(gstate); |
724 | ||
21dfd91d | 725 | return ret; |
514b2edc UH |
726 | |
727 | err: | |
728 | PyGILState_Release(gstate); | |
729 | ||
730 | return SRD_ERR; | |
731 | ||
732 | ret_9999: | |
733 | PyGILState_Release(gstate); | |
734 | ||
735 | return 9999; | |
21dfd91d UH |
736 | } |
737 | ||
96e1cee7 GS |
738 | /** |
739 | * Create a SKIP condition list for condition-less .wait() calls. | |
740 | * | |
741 | * @param di Decoder instance. | |
742 | * @param count Number of samples to skip. | |
743 | * | |
744 | * @retval SRD_OK The new condition list was set successfully. | |
745 | * @retval SRD_ERR There was an error setting the new condition list. | |
746 | * The contents of di->condition_list are undefined. | |
747 | * | |
748 | * This routine is a reduced and specialized version of the @ref | |
749 | * set_new_condition_list() and @ref create_term_list() routines which | |
750 | * gets invoked when .wait() was called without specifications for | |
751 | * conditions. This minor duplication of the SKIP term list creation | |
752 | * simplifies the logic and avoids the creation of expensive Python | |
753 | * objects with "constant" values which the caller did not pass in the | |
754 | * first place. It results in maximum sharing of match handling code | |
755 | * paths. | |
756 | */ | |
757 | static int set_skip_condition(struct srd_decoder_inst *di, uint64_t count) | |
758 | { | |
759 | struct srd_term *term; | |
760 | GSList *term_list; | |
761 | ||
762 | condition_list_free(di); | |
35c10c0e | 763 | term = g_malloc(sizeof(*term)); |
96e1cee7 GS |
764 | term->type = SRD_TERM_SKIP; |
765 | term->num_samples_to_skip = count; | |
766 | term->num_samples_already_skipped = 0; | |
767 | term_list = g_slist_append(NULL, term); | |
768 | di->condition_list = g_slist_append(di->condition_list, term_list); | |
769 | ||
770 | return SRD_OK; | |
771 | } | |
772 | ||
21dfd91d UH |
773 | static PyObject *Decoder_wait(PyObject *self, PyObject *args) |
774 | { | |
775 | int ret; | |
96e1cee7 | 776 | uint64_t skip_count; |
21dfd91d UH |
777 | unsigned int i; |
778 | gboolean found_match; | |
779 | struct srd_decoder_inst *di; | |
780 | PyObject *py_pinvalues, *py_matched; | |
514b2edc | 781 | PyGILState_STATE gstate; |
21dfd91d UH |
782 | |
783 | if (!self || !args) | |
784 | return NULL; | |
785 | ||
514b2edc UH |
786 | gstate = PyGILState_Ensure(); |
787 | ||
21dfd91d UH |
788 | if (!(di = srd_inst_find_by_obj(NULL, self))) { |
789 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
514b2edc | 790 | PyGILState_Release(gstate); |
21dfd91d UH |
791 | Py_RETURN_NONE; |
792 | } | |
793 | ||
794 | ret = set_new_condition_list(self, args); | |
04383ea8 GS |
795 | if (ret < 0) { |
796 | srd_dbg("%s: %s: Aborting wait().", di->inst_id, __func__); | |
514b2edc | 797 | goto err; |
04383ea8 | 798 | } |
21dfd91d | 799 | if (ret == 9999) { |
96e1cee7 GS |
800 | /* |
801 | * Empty condition list, automatic match. Arrange for the | |
802 | * execution of regular match handling code paths such that | |
803 | * the next available sample is returned to the caller. | |
804 | * Make sure to skip one sample when "anywhere within the | |
805 | * stream", yet make sure to not skip sample number 0. | |
806 | */ | |
807 | if (di->abs_cur_samplenum) | |
808 | skip_count = 1; | |
809 | else if (!di->condition_list) | |
810 | skip_count = 0; | |
811 | else | |
812 | skip_count = 1; | |
813 | ret = set_skip_condition(di, skip_count); | |
814 | if (ret < 0) { | |
815 | srd_dbg("%s: %s: Cannot setup condition-less wait().", | |
816 | di->inst_id, __func__); | |
514b2edc | 817 | goto err; |
96e1cee7 | 818 | } |
21dfd91d UH |
819 | } |
820 | ||
821 | while (1) { | |
514b2edc UH |
822 | |
823 | Py_BEGIN_ALLOW_THREADS | |
824 | ||
04383ea8 | 825 | /* Wait for new samples to process, or termination request. */ |
21dfd91d | 826 | g_mutex_lock(&di->data_mutex); |
04383ea8 | 827 | while (!di->got_new_samples && !di->want_wait_terminate) |
21dfd91d UH |
828 | g_cond_wait(&di->got_new_samples_cond, &di->data_mutex); |
829 | ||
04383ea8 GS |
830 | /* |
831 | * Check whether any of the current condition(s) match. | |
832 | * Arrange for termination requests to take a code path which | |
833 | * won't find new samples to process, pretends to have processed | |
834 | * previously stored samples, and returns to the main thread, | |
835 | * while the termination request still gets signalled. | |
836 | */ | |
837 | found_match = FALSE; | |
60d4764a UH |
838 | |
839 | /* Ignore return value for now, should never be negative. */ | |
840 | (void)process_samples_until_condition_match(di, &found_match); | |
21dfd91d | 841 | |
514b2edc UH |
842 | Py_END_ALLOW_THREADS |
843 | ||
21dfd91d UH |
844 | /* If there's a match, set self.samplenum etc. and return. */ |
845 | if (found_match) { | |
846 | /* Set self.samplenum to the (absolute) sample number that matched. */ | |
847 | PyObject_SetAttrString(di->py_inst, "samplenum", | |
4564e8e5 | 848 | PyLong_FromLong(di->abs_cur_samplenum)); |
21dfd91d UH |
849 | |
850 | if (di->match_array && di->match_array->len > 0) { | |
851 | py_matched = PyTuple_New(di->match_array->len); | |
852 | for (i = 0; i < di->match_array->len; i++) | |
853 | PyTuple_SetItem(py_matched, i, PyBool_FromLong(di->match_array->data[i])); | |
854 | PyObject_SetAttrString(di->py_inst, "matched", py_matched); | |
855 | match_array_free(di); | |
856 | } else { | |
857 | PyObject_SetAttrString(di->py_inst, "matched", Py_None); | |
858 | } | |
fa168be6 | 859 | |
21dfd91d UH |
860 | py_pinvalues = get_current_pinvalues(di); |
861 | ||
862 | g_mutex_unlock(&di->data_mutex); | |
863 | ||
514b2edc UH |
864 | PyGILState_Release(gstate); |
865 | ||
21dfd91d UH |
866 | return py_pinvalues; |
867 | } | |
868 | ||
869 | /* No match, reset state for the next chunk. */ | |
870 | di->got_new_samples = FALSE; | |
871 | di->handled_all_samples = TRUE; | |
4564e8e5 UH |
872 | di->abs_start_samplenum = 0; |
873 | di->abs_end_samplenum = 0; | |
21dfd91d UH |
874 | di->inbuf = NULL; |
875 | di->inbuflen = 0; | |
876 | ||
877 | /* Signal the main thread that we handled all samples. */ | |
878 | g_cond_signal(&di->handled_all_samples_cond); | |
879 | ||
04383ea8 GS |
880 | /* |
881 | * When termination of wait() and decode() was requested, | |
882 | * then exit the loop after releasing the mutex. | |
883 | */ | |
884 | if (di->want_wait_terminate) { | |
885 | srd_dbg("%s: %s: Will return from wait().", | |
886 | di->inst_id, __func__); | |
887 | g_mutex_unlock(&di->data_mutex); | |
514b2edc | 888 | goto err; |
04383ea8 GS |
889 | } |
890 | ||
21dfd91d UH |
891 | g_mutex_unlock(&di->data_mutex); |
892 | } | |
893 | ||
514b2edc UH |
894 | PyGILState_Release(gstate); |
895 | ||
21dfd91d | 896 | Py_RETURN_NONE; |
514b2edc UH |
897 | |
898 | err: | |
899 | PyGILState_Release(gstate); | |
900 | ||
901 | return NULL; | |
21dfd91d UH |
902 | } |
903 | ||
904 | /** | |
905 | * Return whether the specified channel was supplied to the decoder. | |
906 | * | |
907 | * @param self TODO. Must not be NULL. | |
908 | * @param args TODO. Must not be NULL. | |
909 | * | |
910 | * @retval Py_True The channel has been supplied by the frontend. | |
911 | * @retval Py_False The channel has been supplied by the frontend. | |
912 | * @retval NULL An error occurred. | |
913 | */ | |
914 | static PyObject *Decoder_has_channel(PyObject *self, PyObject *args) | |
915 | { | |
cd8d9188 | 916 | int idx, count; |
21dfd91d | 917 | struct srd_decoder_inst *di; |
514b2edc | 918 | PyGILState_STATE gstate; |
21dfd91d UH |
919 | |
920 | if (!self || !args) | |
921 | return NULL; | |
922 | ||
514b2edc UH |
923 | gstate = PyGILState_Ensure(); |
924 | ||
21dfd91d UH |
925 | if (!(di = srd_inst_find_by_obj(NULL, self))) { |
926 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
514b2edc | 927 | goto err; |
21dfd91d UH |
928 | } |
929 | ||
cd8d9188 GS |
930 | /* |
931 | * Get the integer argument of self.has_channel(). Check for | |
932 | * the range of supported PD input channel numbers. | |
933 | */ | |
934 | if (!PyArg_ParseTuple(args, "i", &idx)) { | |
21dfd91d | 935 | /* Let Python raise this exception. */ |
514b2edc | 936 | goto err; |
21dfd91d UH |
937 | } |
938 | ||
cd8d9188 GS |
939 | count = g_slist_length(di->decoder->channels) + |
940 | g_slist_length(di->decoder->opt_channels); | |
941 | if (idx < 0 || idx >= count) { | |
942 | srd_err("Invalid index %d, PD channel count %d.", idx, count); | |
943 | PyErr_SetString(PyExc_IndexError, "invalid channel index"); | |
514b2edc | 944 | goto err; |
21dfd91d UH |
945 | } |
946 | ||
514b2edc UH |
947 | PyGILState_Release(gstate); |
948 | ||
21dfd91d | 949 | return (di->dec_channelmap[idx] == -1) ? Py_False : Py_True; |
514b2edc UH |
950 | |
951 | err: | |
952 | PyGILState_Release(gstate); | |
953 | ||
954 | return NULL; | |
21dfd91d UH |
955 | } |
956 | ||
d0a0ed03 BV |
957 | static PyMethodDef Decoder_methods[] = { |
958 | {"put", Decoder_put, METH_VARARGS, | |
86528298 | 959 | "Accepts a dictionary with the following keys: startsample, endsample, data"}, |
7ee0c40b BV |
960 | {"register", (PyCFunction)Decoder_register, METH_VARARGS|METH_KEYWORDS, |
961 | "Register a new output stream"}, | |
21dfd91d UH |
962 | {"wait", Decoder_wait, METH_VARARGS, |
963 | "Wait for one or more conditions to occur"}, | |
964 | {"has_channel", Decoder_has_channel, METH_VARARGS, | |
965 | "Report whether a channel was supplied"}, | |
d0a0ed03 BV |
966 | {NULL, NULL, 0, NULL} |
967 | }; | |
968 | ||
21dfd91d UH |
969 | /** |
970 | * Create the sigrokdecode.Decoder type. | |
971 | * | |
201a85a8 | 972 | * @return The new type object. |
21dfd91d | 973 | * |
201a85a8 DE |
974 | * @private |
975 | */ | |
976 | SRD_PRIV PyObject *srd_Decoder_type_new(void) | |
977 | { | |
978 | PyType_Spec spec; | |
979 | PyType_Slot slots[] = { | |
980 | { Py_tp_doc, "sigrok Decoder base class" }, | |
981 | { Py_tp_methods, Decoder_methods }, | |
982 | { Py_tp_new, (void *)&PyType_GenericNew }, | |
983 | { 0, NULL } | |
984 | }; | |
514b2edc UH |
985 | PyObject *py_obj; |
986 | PyGILState_STATE gstate; | |
987 | ||
988 | gstate = PyGILState_Ensure(); | |
989 | ||
201a85a8 DE |
990 | spec.name = "sigrokdecode.Decoder"; |
991 | spec.basicsize = sizeof(srd_Decoder); | |
992 | spec.itemsize = 0; | |
993 | spec.flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE; | |
994 | spec.slots = slots; | |
995 | ||
514b2edc UH |
996 | py_obj = PyType_FromSpec(&spec); |
997 | ||
998 | PyGILState_Release(gstate); | |
999 | ||
1000 | return py_obj; | |
201a85a8 | 1001 | } |