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Commit | Line | Data |
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1c6fa20f UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
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 2 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
17830fe1 | 21 | #include "config.h" |
1c6fa20f UH |
22 | #include <sigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */ |
23 | #include <stdio.h> | |
5c55017c | 24 | #include <string.h> |
7c24d086 | 25 | #include <dirent.h> |
1c6fa20f | 26 | |
e6c7a826 UH |
27 | /* Re-define some string functions for Python >= 3.0. */ |
28 | #if PY_VERSION_HEX >= 0x03000000 | |
29 | #define PyString_AsString PyBytes_AsString | |
30 | #define PyString_FromString PyBytes_FromString | |
31 | #define PyString_Check PyBytes_Check | |
32 | #endif | |
33 | ||
7c24d086 | 34 | /* The list of protocol decoders. */ |
a0d48257 | 35 | static GSList *list_pds = NULL; |
60b928b2 GM |
36 | /* The list of protocol decoder instances: struct srd_decoder_instance */ |
37 | static GSList *decoders; | |
7c24d086 | 38 | |
f800adc4 UH |
39 | /* |
40 | * Here's a quick overview of Python/C API reference counting. | |
41 | * | |
42 | * Check the Python/C API docs for what type of reference a function returns. | |
43 | * | |
2557ad9d | 44 | * - If it returns a "new reference", you're responsible to Py_XDECREF() it. |
f800adc4 | 45 | * |
2557ad9d | 46 | * - If it returns a "borrowed reference", you MUST NOT Py_XDECREF() it. |
f800adc4 UH |
47 | * |
48 | * - If a function "steals" a reference, you no longer are responsible for | |
2557ad9d | 49 | * Py_XDECREF()ing it (someone else will do it for you at some point). |
f800adc4 UH |
50 | */ |
51 | ||
67e847fd GM |
52 | static int srd_load_decoder(PyObject *py_res); |
53 | ||
54 | static PyObject *emb_register(PyObject *self, PyObject *args) | |
55 | { | |
56 | PyObject *arg; | |
57 | ||
58 | (void)self; | |
59 | ||
60 | if (!PyArg_ParseTuple(args, "O:decoder", &arg)) | |
61 | return NULL; | |
62 | ||
63 | srd_load_decoder(arg); | |
64 | ||
65 | Py_RETURN_NONE; | |
66 | } | |
53bec0cf | 67 | |
261d6532 | 68 | static PyObject *emb_put(PyObject *self, PyObject *args) |
922763ab KS |
69 | { |
70 | PyObject *arg; | |
261d6532 | 71 | |
6eb87578 GM |
72 | (void)self; |
73 | ||
922763ab KS |
74 | if (!PyArg_ParseTuple(args, "O:put", &arg)) |
75 | return NULL; | |
76 | ||
3b24e378 | 77 | PyObject_Print(arg, stdout, Py_PRINT_RAW); |
74911b4c | 78 | puts(""); |
3b24e378 | 79 | |
922763ab KS |
80 | Py_RETURN_NONE; |
81 | } | |
82 | ||
83 | static PyMethodDef EmbMethods[] = { | |
67e847fd GM |
84 | {"register", emb_register, METH_VARARGS, |
85 | "Register a protocol decoder object with libsigrokdecode."}, | |
922763ab | 86 | {"put", emb_put, METH_VARARGS, |
261d6532 | 87 | "Accepts a dictionary with the following keys: time, duration, data"}, |
922763ab KS |
88 | {NULL, NULL, 0, NULL} |
89 | }; | |
90 | ||
1c6fa20f UH |
91 | /** |
92 | * Initialize libsigrokdecode. | |
93 | * | |
c75080f0 UH |
94 | * This initializes the Python interpreter, and creates and initializes |
95 | * a "sigrok" Python module with a single put() method. | |
96 | * | |
97 | * Then, it searches for sigrok protocol decoder files (*.py) in the | |
98 | * "decoders" subdirectory of the the sigrok installation directory. | |
99 | * All decoders that are found are loaded into memory and added to an | |
100 | * internal list of decoders, which can be queried via srd_list_decoders(). | |
101 | * | |
102 | * The caller is responsible for calling the clean-up function srd_exit(), | |
103 | * which will properly shut down libsigrokdecode and free its allocated memory. | |
104 | * | |
105 | * Multiple calls to srd_init(), without calling srd_exit() inbetween, | |
106 | * are not allowed. | |
107 | * | |
d752b12b | 108 | * @return SRD_OK upon success, a (negative) error code otherwise. |
c75080f0 UH |
109 | * Upon Python errors, return SRD_ERR_PYTHON. If the sigrok decoders |
110 | * directory cannot be accessed, return SRD_ERR_DECODERS_DIR. | |
111 | * If not enough memory could be allocated, return SRD_ERR_MALLOC. | |
1c6fa20f | 112 | */ |
d752b12b | 113 | int srd_init(void) |
1c6fa20f | 114 | { |
7c24d086 UH |
115 | DIR *dir; |
116 | struct dirent *dp; | |
53bec0cf | 117 | char *decodername; |
d752b12b | 118 | struct srd_decoder *dec; |
53bec0cf | 119 | int ret; |
7c24d086 | 120 | |
1c6fa20f UH |
121 | /* Py_Initialize() returns void and usually cannot fail. */ |
122 | Py_Initialize(); | |
123 | ||
0d1cf0f8 UH |
124 | /* TODO: Use Py_InitModule3() to add a docstring? */ |
125 | if (!Py_InitModule("sigrok", EmbMethods)) { | |
126 | Py_Finalize(); /* Returns void. */ | |
127 | return SRD_ERR_PYTHON; | |
128 | } | |
922763ab | 129 | |
0895f56a | 130 | /* Add search directory for the protocol decoders. */ |
70e44845 | 131 | /* FIXME: What happens if this function is called multiple times? */ |
0d1cf0f8 UH |
132 | ret = PyRun_SimpleString("import sys;" |
133 | "sys.path.append(r'" DECODERS_DIR "');"); | |
134 | if (ret != 0) { | |
135 | Py_Finalize(); /* Returns void. */ | |
136 | return SRD_ERR_PYTHON; | |
137 | } | |
1c6fa20f | 138 | |
0d1cf0f8 UH |
139 | if (!(dir = opendir(DECODERS_DIR))) { |
140 | Py_Finalize(); /* Returns void. */ | |
d752b12b | 141 | return SRD_ERR_DECODERS_DIR; |
0d1cf0f8 | 142 | } |
7c24d086 UH |
143 | |
144 | while ((dp = readdir(dir)) != NULL) { | |
261d6532 | 145 | /* Ignore filenames which don't end with ".py". */ |
276b55eb | 146 | if (!g_str_has_suffix(dp->d_name, ".py")) |
7c24d086 | 147 | continue; |
53bec0cf UH |
148 | |
149 | /* Decoder name == filename (without .py suffix). */ | |
150 | decodername = g_strndup(dp->d_name, strlen(dp->d_name) - 3); | |
151 | ||
261d6532 | 152 | /* TODO: Error handling. Use g_try_malloc(). */ |
0d1cf0f8 UH |
153 | if (!(dec = malloc(sizeof(struct srd_decoder)))) { |
154 | Py_Finalize(); /* Returns void. */ | |
155 | return SRD_ERR_MALLOC; | |
156 | } | |
53bec0cf UH |
157 | |
158 | /* Load the decoder. */ | |
67e847fd GM |
159 | /* "Import" the Python module. */ |
160 | PyObject *py_mod; | |
161 | if (!(py_mod = PyImport_ImportModule(decodername))) { /* NEWREF */ | |
162 | PyErr_Print(); /* Returns void. */ | |
163 | return SRD_ERR_PYTHON; /* TODO: More specific error? */ | |
3b24e378 | 164 | } |
67e847fd GM |
165 | /* We release here. If any decoders were registered they |
166 | * will hold references. */ | |
167 | Py_XDECREF(py_mod); | |
7c24d086 UH |
168 | } |
169 | closedir(dir); | |
170 | ||
d752b12b | 171 | return SRD_OK; |
1c6fa20f UH |
172 | } |
173 | ||
871d21e2 UH |
174 | /** |
175 | * Returns the list of supported/loaded protocol decoders. | |
176 | * | |
177 | * This is a GSList containing the names of the decoders as strings. | |
178 | * | |
179 | * @return List of decoders, NULL if none are supported or loaded. | |
180 | */ | |
d752b12b | 181 | GSList *srd_list_decoders(void) |
871d21e2 UH |
182 | { |
183 | return list_pds; | |
184 | } | |
185 | ||
53bec0cf UH |
186 | /** |
187 | * Get the decoder with the specified ID. | |
188 | * | |
189 | * @param id The ID string of the decoder to return. | |
190 | * @return The decoder with the specified ID, or NULL if not found. | |
191 | */ | |
d752b12b | 192 | struct srd_decoder *srd_get_decoder_by_id(const char *id) |
53bec0cf UH |
193 | { |
194 | GSList *l; | |
d752b12b | 195 | struct srd_decoder *dec; |
53bec0cf | 196 | |
d752b12b | 197 | for (l = srd_list_decoders(); l; l = l->next) { |
53bec0cf UH |
198 | dec = l->data; |
199 | if (!strcmp(dec->id, id)) | |
200 | return dec; | |
201 | } | |
202 | ||
203 | return NULL; | |
204 | } | |
205 | ||
5c55017c UH |
206 | /** |
207 | * Helper function to handle Python strings. | |
208 | * | |
209 | * TODO: @param entries. | |
210 | * | |
d752b12b | 211 | * @return SRD_OK upon success, a (negative) error code otherwise. |
70e44845 | 212 | * The 'outstr' argument points to a malloc()ed string upon success. |
5c55017c | 213 | */ |
67e847fd | 214 | static int h_str(PyObject *py_res, const char *key, char **outstr) |
5c55017c UH |
215 | { |
216 | PyObject *py_str; | |
217 | char *str; | |
f7313eea | 218 | int ret; |
5c55017c | 219 | |
6eb87578 | 220 | py_str = PyObject_GetAttrString(py_res, (char *)key); /* NEWREF */ |
5c55017c | 221 | if (!py_str || !PyString_Check(py_str)) { |
d752b12b | 222 | ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ |
922763ab | 223 | goto err_h_decref_mod; |
5c55017c UH |
224 | } |
225 | ||
6b08da24 UH |
226 | /* |
227 | * PyString_AsString()'s returned string refers to an internal buffer | |
228 | * (not a copy), i.e. the data must not be modified, and the memory | |
229 | * must not be free()'d. | |
230 | */ | |
5c55017c | 231 | if (!(str = PyString_AsString(py_str))) { |
d752b12b | 232 | ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ |
f7313eea | 233 | goto err_h_decref_str; |
5c55017c UH |
234 | } |
235 | ||
f9b54a6c | 236 | if (!(*outstr = g_strdup(str))) { |
d752b12b | 237 | ret = SRD_ERR_MALLOC; |
f7313eea | 238 | goto err_h_decref_str; |
5c55017c UH |
239 | } |
240 | ||
2557ad9d | 241 | Py_XDECREF(py_str); |
5c55017c | 242 | |
d752b12b | 243 | return SRD_OK; |
f7313eea UH |
244 | |
245 | err_h_decref_str: | |
246 | Py_XDECREF(py_str); | |
922763ab | 247 | err_h_decref_mod: |
f7313eea UH |
248 | |
249 | if (PyErr_Occurred()) | |
250 | PyErr_Print(); /* Returns void. */ | |
251 | ||
252 | return ret; | |
5c55017c UH |
253 | } |
254 | ||
1c6fa20f UH |
255 | /** |
256 | * TODO | |
257 | * | |
258 | * @param name TODO | |
70e44845 | 259 | * |
d752b12b | 260 | * @return SRD_OK upon success, a (negative) error code otherwise. |
1c6fa20f | 261 | */ |
67e847fd | 262 | static int srd_load_decoder(PyObject *py_res) |
1c6fa20f | 263 | { |
d752b12b | 264 | struct srd_decoder *d; |
5c55017c | 265 | int r; |
261d6532 | 266 | |
d752b12b UH |
267 | if (!(d = malloc(sizeof(struct srd_decoder)))) |
268 | return SRD_ERR_MALLOC; | |
5c55017c | 269 | |
67e847fd GM |
270 | if ((r = h_str(py_res, "id", &(d->id))) < 0) |
271 | return r; | |
5c55017c | 272 | |
67e847fd | 273 | if ((r = h_str(py_res, "name", &(d->name))) < 0) |
5c55017c UH |
274 | return r; |
275 | ||
67e847fd | 276 | if ((r = h_str(py_res, "longname", |
75a282e5 UH |
277 | &(d->longname))) < 0) |
278 | return r; | |
279 | ||
67e847fd | 280 | if ((r = h_str(py_res, "desc", &(d->desc))) < 0) |
5c55017c UH |
281 | return r; |
282 | ||
67e847fd | 283 | if ((r = h_str(py_res, "longdesc", |
75a282e5 UH |
284 | &(d->longdesc))) < 0) |
285 | return r; | |
286 | ||
67e847fd | 287 | if ((r = h_str(py_res, "author", &(d->author))) < 0) |
75a282e5 UH |
288 | return r; |
289 | ||
67e847fd | 290 | if ((r = h_str(py_res, "email", &(d->email))) < 0) |
75a282e5 UH |
291 | return r; |
292 | ||
67e847fd | 293 | if ((r = h_str(py_res, "license", &(d->license))) < 0) |
75a282e5 UH |
294 | return r; |
295 | ||
6eb87578 | 296 | d->py_decobj = py_res; |
5c55017c | 297 | |
74911b4c GM |
298 | /* TODO: Handle func, inputformats, outputformats. */ |
299 | /* Note: They must at least be set to NULL, will segfault otherwise. */ | |
300 | d->func = NULL; | |
301 | d->inputformats = NULL; | |
302 | d->outputformats = NULL; | |
303 | ||
67e847fd GM |
304 | Py_INCREF(py_res); |
305 | fprintf(stderr, "srd: registered '%s'\n", d->id); | |
306 | list_pds = g_slist_append(list_pds, d); | |
74911b4c GM |
307 | |
308 | return SRD_OK; | |
309 | } | |
310 | ||
60b928b2 | 311 | /** Create a new decoder instance and add to session. */ |
74911b4c GM |
312 | struct srd_decoder_instance *srd_instance_new(const char *id) |
313 | { | |
261d6532 UH |
314 | struct srd_decoder *dec; |
315 | struct srd_decoder_instance *di; | |
3643fc3f | 316 | PyObject *py_args; |
74911b4c | 317 | |
261d6532 UH |
318 | if (!(dec = srd_get_decoder_by_id(id))) |
319 | return NULL; | |
320 | ||
321 | /* TODO: Error handling. Use g_try_malloc(). */ | |
322 | di = g_malloc(sizeof(*di)); | |
323 | ||
324 | /* Create an empty Python tuple. */ | |
6eb87578 | 325 | if (!(py_args = PyTuple_New(0))) { /* NEWREF */ |
5c55017c | 326 | if (PyErr_Occurred()) |
6b08da24 | 327 | PyErr_Print(); /* Returns void. */ |
261d6532 | 328 | |
74911b4c | 329 | return NULL; /* TODO: More specific error? */ |
5c55017c | 330 | } |
74911b4c | 331 | |
261d6532 | 332 | /* Create an instance of the 'Decoder' class. */ |
3643fc3f | 333 | di->py_instance = PyObject_Call(dec->py_decobj, py_args, NULL); |
74911b4c | 334 | if (!di->py_instance) { |
6eb87578 GM |
335 | if (PyErr_Occurred()) |
336 | PyErr_Print(); /* Returns void. */ | |
74911b4c | 337 | Py_XDECREF(py_args); |
74911b4c | 338 | return NULL; /* TODO: More specific error? */ |
261d6532 | 339 | } |
5c55017c | 340 | |
60b928b2 GM |
341 | /* Append to list of PD instances */ |
342 | decoders = g_slist_append(decoders, di); | |
343 | ||
74911b4c | 344 | Py_XDECREF(py_args); |
910e5fd8 | 345 | |
74911b4c | 346 | return di; |
1c6fa20f UH |
347 | } |
348 | ||
f97f531c | 349 | int srd_instance_set_probe(struct srd_decoder_instance *di, |
261d6532 | 350 | const char *probename, int num) |
f97f531c GM |
351 | { |
352 | PyObject *probedict, *probenum; | |
261d6532 | 353 | |
f97f531c GM |
354 | probedict = PyObject_GetAttrString(di->py_instance, "probes"); /* NEWREF */ |
355 | if (!probedict) { | |
356 | if (PyErr_Occurred()) | |
357 | PyErr_Print(); /* Returns void. */ | |
261d6532 | 358 | |
f97f531c GM |
359 | return SRD_ERR_PYTHON; /* TODO: More specific error? */ |
360 | } | |
361 | ||
362 | probenum = PyInt_FromLong(num); | |
261d6532 | 363 | PyMapping_SetItemString(probedict, (char *)probename, probenum); |
f97f531c GM |
364 | |
365 | Py_XDECREF(probenum); | |
366 | Py_XDECREF(probedict); | |
261d6532 | 367 | |
f97f531c GM |
368 | return SRD_OK; |
369 | } | |
370 | ||
60b928b2 GM |
371 | /** Start decoding session. Feed metadata to decoder instances. */ |
372 | int srd_session_start(const char *driver, int unitsize, uint64_t starttime, | |
73e542a4 | 373 | uint64_t samplerate) |
3643fc3f GM |
374 | { |
375 | PyObject *py_res; | |
60b928b2 GM |
376 | GSList *d; |
377 | for (d = decoders; d; d = d->next) { | |
378 | struct srd_decoder_instance *di = d->data; | |
379 | /* TODO: Error handling. */ | |
380 | if (!(py_res = PyObject_CallMethod(di->py_instance, "start", | |
381 | "{s:s,s:l,s:l,s:l}", | |
382 | "driver", driver, | |
383 | "unitsize", (long)unitsize, | |
384 | "starttime", (long)starttime, | |
385 | "samplerate", (long)samplerate))) { | |
386 | if (PyErr_Occurred()) | |
387 | PyErr_Print(); /* Returns void. */ | |
388 | ||
389 | return SRD_ERR_PYTHON; /* TODO: More specific error? */ | |
390 | } | |
391 | Py_XDECREF(py_res); | |
3643fc3f | 392 | } |
60b928b2 | 393 | |
3643fc3f GM |
394 | return SRD_OK; |
395 | } | |
396 | ||
1c6fa20f UH |
397 | /** |
398 | * Run the specified decoder function. | |
399 | * | |
5c55017c | 400 | * @param dec TODO |
1c6fa20f UH |
401 | * @param inbuf TODO |
402 | * @param inbuflen TODO | |
403 | * @param outbuf TODO | |
404 | * @param outbuflen TODO | |
70e44845 | 405 | * |
d752b12b | 406 | * @return SRD_OK upon success, a (negative) error code otherwise. |
1c6fa20f | 407 | */ |
60b928b2 GM |
408 | static int srd_run_decoder(struct srd_decoder_instance *dec, |
409 | uint8_t *inbuf, uint64_t inbuflen) | |
1c6fa20f | 410 | { |
3643fc3f | 411 | PyObject *py_instance, *py_res; |
9d29ffad KS |
412 | /* FIXME: Don't have a timebase available here. Make one up. */ |
413 | static int _timehack = 0; | |
261d6532 | 414 | |
9d29ffad | 415 | _timehack += inbuflen; |
1c6fa20f UH |
416 | |
417 | /* TODO: Use #defines for the return codes. */ | |
418 | ||
419 | /* Return an error upon unusable input. */ | |
5c55017c | 420 | if (dec == NULL) |
d752b12b | 421 | return SRD_ERR_ARGS; /* TODO: More specific error? */ |
1c6fa20f | 422 | if (inbuf == NULL) |
d752b12b | 423 | return SRD_ERR_ARGS; /* TODO: More specific error? */ |
1c6fa20f | 424 | if (inbuflen == 0) /* No point in working on empty buffers. */ |
d752b12b | 425 | return SRD_ERR_ARGS; /* TODO: More specific error? */ |
261d6532 | 426 | |
5c55017c | 427 | /* TODO: Error handling. */ |
052f32ee GM |
428 | py_instance = dec->py_instance; |
429 | Py_XINCREF(py_instance); | |
1c6fa20f | 430 | |
261d6532 | 431 | if (!(py_res = PyObject_CallMethod(py_instance, "decode", |
3643fc3f GM |
432 | "{s:i,s:i,s:s#}", |
433 | "time", _timehack, | |
434 | "duration", 10, | |
435 | "data", inbuf, inbuflen))) { /* NEWREF */ | |
436 | if (PyErr_Occurred()) | |
437 | PyErr_Print(); /* Returns void. */ | |
9d29ffad | 438 | |
3643fc3f GM |
439 | return SRD_ERR_PYTHON; /* TODO: More specific error? */ |
440 | } | |
036e6f67 | 441 | |
2557ad9d | 442 | Py_XDECREF(py_res); |
3643fc3f | 443 | return SRD_OK; |
1c6fa20f UH |
444 | } |
445 | ||
60b928b2 GM |
446 | /* Feed logic samples to decoder session. */ |
447 | int srd_session_feed(uint8_t *inbuf, uint64_t inbuflen) | |
448 | { | |
449 | GSList *d; | |
450 | for (d = decoders; d; d = d->next) { | |
451 | /* TODO: Error handling. */ | |
452 | ||
453 | int ret = srd_run_decoder(d->data, inbuf, inbuflen); | |
454 | ||
455 | if (ret != SRD_OK) { | |
67e847fd | 456 | /* This probably shouldn't fail catastrophically. */ |
60b928b2 GM |
457 | fprintf(stderr, "Decoder runtime error (%d)\n", ret); |
458 | exit(1); | |
459 | } | |
460 | } | |
67e847fd | 461 | return SRD_OK; |
60b928b2 GM |
462 | } |
463 | ||
f9b54a6c UH |
464 | /** |
465 | * TODO | |
466 | */ | |
d752b12b | 467 | static int srd_unload_decoder(struct srd_decoder *dec) |
f9b54a6c UH |
468 | { |
469 | g_free(dec->id); | |
470 | g_free(dec->name); | |
471 | g_free(dec->desc); | |
472 | g_free(dec->func); | |
473 | ||
474 | /* TODO: Free everything in inputformats and outputformats. */ | |
475 | ||
476 | if (dec->inputformats != NULL) | |
477 | g_slist_free(dec->inputformats); | |
478 | if (dec->outputformats != NULL) | |
479 | g_slist_free(dec->outputformats); | |
480 | ||
74911b4c | 481 | Py_XDECREF(dec->py_decobj); |
f9b54a6c | 482 | |
0d1cf0f8 UH |
483 | /* TODO: (g_)free dec itself? */ |
484 | ||
d752b12b | 485 | return SRD_OK; |
f9b54a6c UH |
486 | } |
487 | ||
488 | /** | |
489 | * TODO | |
490 | */ | |
d752b12b | 491 | static int srd_unload_all_decoders(void) |
f9b54a6c UH |
492 | { |
493 | GSList *l; | |
d752b12b | 494 | struct srd_decoder *dec; |
f9b54a6c | 495 | |
d752b12b | 496 | for (l = srd_list_decoders(); l; l = l->next) { |
f9b54a6c UH |
497 | dec = l->data; |
498 | /* TODO: Error handling. */ | |
d752b12b | 499 | srd_unload_decoder(dec); |
f9b54a6c UH |
500 | } |
501 | ||
d752b12b | 502 | return SRD_OK; |
f9b54a6c UH |
503 | } |
504 | ||
1c6fa20f UH |
505 | /** |
506 | * Shutdown libsigrokdecode. | |
507 | * | |
c75080f0 UH |
508 | * This frees all the memory allocated for protocol decoders and shuts down |
509 | * the Python interpreter. | |
510 | * | |
511 | * This function should only be called if there was a (successful!) invocation | |
512 | * of srd_init() before. Calling this function multiple times in a row, without | |
513 | * any successful srd_init() calls inbetween, is not allowed. | |
514 | * | |
d752b12b | 515 | * @return SRD_OK upon success, a (negative) error code otherwise. |
1c6fa20f | 516 | */ |
7ea73e33 | 517 | int srd_exit(void) |
1c6fa20f | 518 | { |
f9b54a6c UH |
519 | /* Unload/free all decoders, and then the list of decoders itself. */ |
520 | /* TODO: Error handling. */ | |
d752b12b | 521 | srd_unload_all_decoders(); |
f9b54a6c UH |
522 | g_slist_free(list_pds); |
523 | ||
1c6fa20f UH |
524 | /* Py_Finalize() returns void, any finalization errors are ignored. */ |
525 | Py_Finalize(); | |
526 | ||
d752b12b | 527 | return SRD_OK; |
1c6fa20f | 528 | } |