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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 | ||
d752b12b | 52 | static int srd_load_decoder(const char *name, struct srd_decoder **dec); |
53bec0cf | 53 | |
261d6532 | 54 | static PyObject *emb_put(PyObject *self, PyObject *args) |
922763ab KS |
55 | { |
56 | PyObject *arg; | |
261d6532 | 57 | |
6eb87578 GM |
58 | (void)self; |
59 | ||
922763ab KS |
60 | if (!PyArg_ParseTuple(args, "O:put", &arg)) |
61 | return NULL; | |
62 | ||
4be5b85e | 63 | // fprintf(stdout, "sigrok.put() called by decoder:\n"); |
3b24e378 | 64 | PyObject_Print(arg, stdout, Py_PRINT_RAW); |
74911b4c | 65 | puts(""); |
3b24e378 | 66 | |
922763ab KS |
67 | Py_RETURN_NONE; |
68 | } | |
69 | ||
70 | static PyMethodDef EmbMethods[] = { | |
922763ab | 71 | {"put", emb_put, METH_VARARGS, |
261d6532 | 72 | "Accepts a dictionary with the following keys: time, duration, data"}, |
922763ab KS |
73 | {NULL, NULL, 0, NULL} |
74 | }; | |
75 | ||
1c6fa20f UH |
76 | /** |
77 | * Initialize libsigrokdecode. | |
78 | * | |
c75080f0 UH |
79 | * This initializes the Python interpreter, and creates and initializes |
80 | * a "sigrok" Python module with a single put() method. | |
81 | * | |
82 | * Then, it searches for sigrok protocol decoder files (*.py) in the | |
83 | * "decoders" subdirectory of the the sigrok installation directory. | |
84 | * All decoders that are found are loaded into memory and added to an | |
85 | * internal list of decoders, which can be queried via srd_list_decoders(). | |
86 | * | |
87 | * The caller is responsible for calling the clean-up function srd_exit(), | |
88 | * which will properly shut down libsigrokdecode and free its allocated memory. | |
89 | * | |
90 | * Multiple calls to srd_init(), without calling srd_exit() inbetween, | |
91 | * are not allowed. | |
92 | * | |
d752b12b | 93 | * @return SRD_OK upon success, a (negative) error code otherwise. |
c75080f0 UH |
94 | * Upon Python errors, return SRD_ERR_PYTHON. If the sigrok decoders |
95 | * directory cannot be accessed, return SRD_ERR_DECODERS_DIR. | |
96 | * If not enough memory could be allocated, return SRD_ERR_MALLOC. | |
1c6fa20f | 97 | */ |
d752b12b | 98 | int srd_init(void) |
1c6fa20f | 99 | { |
7c24d086 UH |
100 | DIR *dir; |
101 | struct dirent *dp; | |
53bec0cf | 102 | char *decodername; |
d752b12b | 103 | struct srd_decoder *dec; |
53bec0cf | 104 | int ret; |
7c24d086 | 105 | |
1c6fa20f UH |
106 | /* Py_Initialize() returns void and usually cannot fail. */ |
107 | Py_Initialize(); | |
108 | ||
0d1cf0f8 UH |
109 | /* TODO: Use Py_InitModule3() to add a docstring? */ |
110 | if (!Py_InitModule("sigrok", EmbMethods)) { | |
111 | Py_Finalize(); /* Returns void. */ | |
112 | return SRD_ERR_PYTHON; | |
113 | } | |
922763ab | 114 | |
0895f56a | 115 | /* Add search directory for the protocol decoders. */ |
70e44845 | 116 | /* FIXME: What happens if this function is called multiple times? */ |
0d1cf0f8 UH |
117 | ret = PyRun_SimpleString("import sys;" |
118 | "sys.path.append(r'" DECODERS_DIR "');"); | |
119 | if (ret != 0) { | |
120 | Py_Finalize(); /* Returns void. */ | |
121 | return SRD_ERR_PYTHON; | |
122 | } | |
1c6fa20f | 123 | |
0d1cf0f8 UH |
124 | if (!(dir = opendir(DECODERS_DIR))) { |
125 | Py_Finalize(); /* Returns void. */ | |
d752b12b | 126 | return SRD_ERR_DECODERS_DIR; |
0d1cf0f8 | 127 | } |
7c24d086 UH |
128 | |
129 | while ((dp = readdir(dir)) != NULL) { | |
261d6532 | 130 | /* Ignore filenames which don't end with ".py". */ |
276b55eb | 131 | if (!g_str_has_suffix(dp->d_name, ".py")) |
7c24d086 | 132 | continue; |
53bec0cf UH |
133 | |
134 | /* Decoder name == filename (without .py suffix). */ | |
135 | decodername = g_strndup(dp->d_name, strlen(dp->d_name) - 3); | |
136 | ||
261d6532 | 137 | /* TODO: Error handling. Use g_try_malloc(). */ |
0d1cf0f8 UH |
138 | if (!(dec = malloc(sizeof(struct srd_decoder)))) { |
139 | Py_Finalize(); /* Returns void. */ | |
140 | return SRD_ERR_MALLOC; | |
141 | } | |
53bec0cf UH |
142 | |
143 | /* Load the decoder. */ | |
0d1cf0f8 | 144 | /* TODO: Warning if loading fails for a decoder. */ |
d752b12b | 145 | ret = srd_load_decoder(decodername, &dec); |
261d6532 | 146 | if (!ret) { |
3b24e378 KS |
147 | /* Append it to the list of supported/loaded decoders. */ |
148 | list_pds = g_slist_append(list_pds, dec); | |
149 | } | |
7c24d086 UH |
150 | } |
151 | closedir(dir); | |
152 | ||
d752b12b | 153 | return SRD_OK; |
1c6fa20f UH |
154 | } |
155 | ||
871d21e2 UH |
156 | /** |
157 | * Returns the list of supported/loaded protocol decoders. | |
158 | * | |
159 | * This is a GSList containing the names of the decoders as strings. | |
160 | * | |
161 | * @return List of decoders, NULL if none are supported or loaded. | |
162 | */ | |
d752b12b | 163 | GSList *srd_list_decoders(void) |
871d21e2 UH |
164 | { |
165 | return list_pds; | |
166 | } | |
167 | ||
53bec0cf UH |
168 | /** |
169 | * Get the decoder with the specified ID. | |
170 | * | |
171 | * @param id The ID string of the decoder to return. | |
172 | * @return The decoder with the specified ID, or NULL if not found. | |
173 | */ | |
d752b12b | 174 | struct srd_decoder *srd_get_decoder_by_id(const char *id) |
53bec0cf UH |
175 | { |
176 | GSList *l; | |
d752b12b | 177 | struct srd_decoder *dec; |
53bec0cf | 178 | |
d752b12b | 179 | for (l = srd_list_decoders(); l; l = l->next) { |
53bec0cf UH |
180 | dec = l->data; |
181 | if (!strcmp(dec->id, id)) | |
182 | return dec; | |
183 | } | |
184 | ||
185 | return NULL; | |
186 | } | |
187 | ||
5c55017c UH |
188 | /** |
189 | * Helper function to handle Python strings. | |
190 | * | |
191 | * TODO: @param entries. | |
192 | * | |
d752b12b | 193 | * @return SRD_OK upon success, a (negative) error code otherwise. |
70e44845 | 194 | * The 'outstr' argument points to a malloc()ed string upon success. |
5c55017c | 195 | */ |
922763ab | 196 | static int h_str(PyObject *py_res, PyObject *py_mod, |
5c55017c UH |
197 | const char *key, char **outstr) |
198 | { | |
199 | PyObject *py_str; | |
200 | char *str; | |
f7313eea | 201 | int ret; |
5c55017c | 202 | |
6eb87578 | 203 | py_str = PyObject_GetAttrString(py_res, (char *)key); /* NEWREF */ |
5c55017c | 204 | if (!py_str || !PyString_Check(py_str)) { |
d752b12b | 205 | ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ |
922763ab | 206 | goto err_h_decref_mod; |
5c55017c UH |
207 | } |
208 | ||
6b08da24 UH |
209 | /* |
210 | * PyString_AsString()'s returned string refers to an internal buffer | |
211 | * (not a copy), i.e. the data must not be modified, and the memory | |
212 | * must not be free()'d. | |
213 | */ | |
5c55017c | 214 | if (!(str = PyString_AsString(py_str))) { |
d752b12b | 215 | ret = SRD_ERR_PYTHON; /* TODO: More specific error? */ |
f7313eea | 216 | goto err_h_decref_str; |
5c55017c UH |
217 | } |
218 | ||
f9b54a6c | 219 | if (!(*outstr = g_strdup(str))) { |
d752b12b | 220 | ret = SRD_ERR_MALLOC; |
f7313eea | 221 | goto err_h_decref_str; |
5c55017c UH |
222 | } |
223 | ||
2557ad9d | 224 | Py_XDECREF(py_str); |
5c55017c | 225 | |
d752b12b | 226 | return SRD_OK; |
f7313eea UH |
227 | |
228 | err_h_decref_str: | |
229 | Py_XDECREF(py_str); | |
922763ab | 230 | err_h_decref_mod: |
f7313eea UH |
231 | Py_XDECREF(py_mod); |
232 | ||
233 | if (PyErr_Occurred()) | |
234 | PyErr_Print(); /* Returns void. */ | |
235 | ||
236 | return ret; | |
5c55017c UH |
237 | } |
238 | ||
1c6fa20f UH |
239 | /** |
240 | * TODO | |
241 | * | |
242 | * @param name TODO | |
70e44845 | 243 | * |
d752b12b | 244 | * @return SRD_OK upon success, a (negative) error code otherwise. |
1c6fa20f | 245 | */ |
261d6532 | 246 | static int srd_load_decoder(const char *name, struct srd_decoder **dec) |
1c6fa20f | 247 | { |
d752b12b | 248 | struct srd_decoder *d; |
6eb87578 | 249 | PyObject *py_mod, *py_res; |
5c55017c | 250 | int r; |
261d6532 | 251 | |
6eb87578 | 252 | fprintf(stdout, "%s: %s\n", __func__, name); |
5c55017c | 253 | |
5c55017c | 254 | /* "Import" the Python module. */ |
c7bb5dff | 255 | if (!(py_mod = PyImport_ImportModule(name))) { /* NEWREF */ |
6b08da24 | 256 | PyErr_Print(); /* Returns void. */ |
d752b12b | 257 | return SRD_ERR_PYTHON; /* TODO: More specific error? */ |
5c55017c | 258 | } |
5c55017c | 259 | |
6eb87578 GM |
260 | /* Get the 'Decoder' class as Python object. */ |
261 | py_res = PyObject_GetAttrString(py_mod, "Decoder"); /* NEWREF */ | |
262 | if (!py_res) { | |
5c55017c | 263 | if (PyErr_Occurred()) |
6b08da24 | 264 | PyErr_Print(); /* Returns void. */ |
2557ad9d | 265 | Py_XDECREF(py_mod); |
6eb87578 | 266 | fprintf(stderr, "Decoder class not found in PD module %s\n", name); |
d752b12b | 267 | return SRD_ERR_PYTHON; /* TODO: More specific error? */ |
5c55017c UH |
268 | } |
269 | ||
d752b12b UH |
270 | if (!(d = malloc(sizeof(struct srd_decoder)))) |
271 | return SRD_ERR_MALLOC; | |
5c55017c | 272 | |
261d6532 | 273 | /* We'll just use the name of the module for the ID. */ |
6eb87578 | 274 | d->id = strdup(name); |
5c55017c | 275 | |
922763ab | 276 | if ((r = h_str(py_res, py_mod, "name", &(d->name))) < 0) |
5c55017c UH |
277 | return r; |
278 | ||
922763ab | 279 | if ((r = h_str(py_res, py_mod, "longname", |
75a282e5 UH |
280 | &(d->longname))) < 0) |
281 | return r; | |
282 | ||
922763ab | 283 | if ((r = h_str(py_res, py_mod, "desc", &(d->desc))) < 0) |
5c55017c UH |
284 | return r; |
285 | ||
922763ab | 286 | if ((r = h_str(py_res, py_mod, "longdesc", |
75a282e5 UH |
287 | &(d->longdesc))) < 0) |
288 | return r; | |
289 | ||
922763ab | 290 | if ((r = h_str(py_res, py_mod, "author", &(d->author))) < 0) |
75a282e5 UH |
291 | return r; |
292 | ||
922763ab | 293 | if ((r = h_str(py_res, py_mod, "email", &(d->email))) < 0) |
75a282e5 UH |
294 | return r; |
295 | ||
922763ab | 296 | if ((r = h_str(py_res, py_mod, "license", &(d->license))) < 0) |
75a282e5 UH |
297 | return r; |
298 | ||
5c55017c | 299 | d->py_mod = py_mod; |
6eb87578 | 300 | d->py_decobj = py_res; |
5c55017c | 301 | |
74911b4c GM |
302 | /* TODO: Handle func, inputformats, outputformats. */ |
303 | /* Note: They must at least be set to NULL, will segfault otherwise. */ | |
304 | d->func = NULL; | |
305 | d->inputformats = NULL; | |
306 | d->outputformats = NULL; | |
307 | ||
308 | *dec = d; | |
309 | ||
310 | return SRD_OK; | |
311 | } | |
312 | ||
60b928b2 | 313 | /** Create a new decoder instance and add to session. */ |
74911b4c GM |
314 | struct srd_decoder_instance *srd_instance_new(const char *id) |
315 | { | |
261d6532 UH |
316 | struct srd_decoder *dec; |
317 | struct srd_decoder_instance *di; | |
3643fc3f | 318 | PyObject *py_args; |
74911b4c | 319 | |
261d6532 UH |
320 | if (!(dec = srd_get_decoder_by_id(id))) |
321 | return NULL; | |
322 | ||
323 | /* TODO: Error handling. Use g_try_malloc(). */ | |
324 | di = g_malloc(sizeof(*di)); | |
325 | ||
326 | /* Create an empty Python tuple. */ | |
6eb87578 | 327 | if (!(py_args = PyTuple_New(0))) { /* NEWREF */ |
5c55017c | 328 | if (PyErr_Occurred()) |
6b08da24 | 329 | PyErr_Print(); /* Returns void. */ |
261d6532 | 330 | |
74911b4c | 331 | return NULL; /* TODO: More specific error? */ |
5c55017c | 332 | } |
74911b4c | 333 | |
261d6532 | 334 | /* Create an instance of the 'Decoder' class. */ |
3643fc3f | 335 | di->py_instance = PyObject_Call(dec->py_decobj, py_args, NULL); |
74911b4c | 336 | if (!di->py_instance) { |
6eb87578 GM |
337 | if (PyErr_Occurred()) |
338 | PyErr_Print(); /* Returns void. */ | |
74911b4c | 339 | Py_XDECREF(py_args); |
74911b4c | 340 | return NULL; /* TODO: More specific error? */ |
261d6532 | 341 | } |
5c55017c | 342 | |
60b928b2 GM |
343 | /* Append to list of PD instances */ |
344 | decoders = g_slist_append(decoders, di); | |
345 | ||
74911b4c | 346 | Py_XDECREF(py_args); |
910e5fd8 | 347 | |
74911b4c | 348 | return di; |
1c6fa20f UH |
349 | } |
350 | ||
f97f531c | 351 | int srd_instance_set_probe(struct srd_decoder_instance *di, |
261d6532 | 352 | const char *probename, int num) |
f97f531c GM |
353 | { |
354 | PyObject *probedict, *probenum; | |
261d6532 | 355 | |
f97f531c GM |
356 | probedict = PyObject_GetAttrString(di->py_instance, "probes"); /* NEWREF */ |
357 | if (!probedict) { | |
358 | if (PyErr_Occurred()) | |
359 | PyErr_Print(); /* Returns void. */ | |
261d6532 | 360 | |
f97f531c GM |
361 | return SRD_ERR_PYTHON; /* TODO: More specific error? */ |
362 | } | |
363 | ||
364 | probenum = PyInt_FromLong(num); | |
261d6532 | 365 | PyMapping_SetItemString(probedict, (char *)probename, probenum); |
f97f531c GM |
366 | |
367 | Py_XDECREF(probenum); | |
368 | Py_XDECREF(probedict); | |
261d6532 | 369 | |
f97f531c GM |
370 | return SRD_OK; |
371 | } | |
372 | ||
60b928b2 GM |
373 | /** Start decoding session. Feed metadata to decoder instances. */ |
374 | int srd_session_start(const char *driver, int unitsize, uint64_t starttime, | |
73e542a4 | 375 | uint64_t samplerate) |
3643fc3f GM |
376 | { |
377 | PyObject *py_res; | |
60b928b2 GM |
378 | GSList *d; |
379 | for (d = decoders; d; d = d->next) { | |
380 | struct srd_decoder_instance *di = d->data; | |
381 | /* TODO: Error handling. */ | |
382 | if (!(py_res = PyObject_CallMethod(di->py_instance, "start", | |
383 | "{s:s,s:l,s:l,s:l}", | |
384 | "driver", driver, | |
385 | "unitsize", (long)unitsize, | |
386 | "starttime", (long)starttime, | |
387 | "samplerate", (long)samplerate))) { | |
388 | if (PyErr_Occurred()) | |
389 | PyErr_Print(); /* Returns void. */ | |
390 | ||
391 | return SRD_ERR_PYTHON; /* TODO: More specific error? */ | |
392 | } | |
393 | Py_XDECREF(py_res); | |
3643fc3f | 394 | } |
60b928b2 | 395 | |
3643fc3f GM |
396 | return SRD_OK; |
397 | } | |
398 | ||
1c6fa20f UH |
399 | /** |
400 | * Run the specified decoder function. | |
401 | * | |
5c55017c | 402 | * @param dec TODO |
1c6fa20f UH |
403 | * @param inbuf TODO |
404 | * @param inbuflen TODO | |
405 | * @param outbuf TODO | |
406 | * @param outbuflen TODO | |
70e44845 | 407 | * |
d752b12b | 408 | * @return SRD_OK upon success, a (negative) error code otherwise. |
1c6fa20f | 409 | */ |
60b928b2 GM |
410 | static int srd_run_decoder(struct srd_decoder_instance *dec, |
411 | uint8_t *inbuf, uint64_t inbuflen) | |
1c6fa20f | 412 | { |
3643fc3f | 413 | PyObject *py_instance, *py_res; |
9d29ffad KS |
414 | /* FIXME: Don't have a timebase available here. Make one up. */ |
415 | static int _timehack = 0; | |
261d6532 | 416 | |
9d29ffad | 417 | _timehack += inbuflen; |
1c6fa20f UH |
418 | |
419 | /* TODO: Use #defines for the return codes. */ | |
420 | ||
421 | /* Return an error upon unusable input. */ | |
5c55017c | 422 | if (dec == NULL) |
d752b12b | 423 | return SRD_ERR_ARGS; /* TODO: More specific error? */ |
1c6fa20f | 424 | if (inbuf == NULL) |
d752b12b | 425 | return SRD_ERR_ARGS; /* TODO: More specific error? */ |
1c6fa20f | 426 | if (inbuflen == 0) /* No point in working on empty buffers. */ |
d752b12b | 427 | return SRD_ERR_ARGS; /* TODO: More specific error? */ |
261d6532 | 428 | |
5c55017c | 429 | /* TODO: Error handling. */ |
052f32ee GM |
430 | py_instance = dec->py_instance; |
431 | Py_XINCREF(py_instance); | |
1c6fa20f | 432 | |
261d6532 | 433 | if (!(py_res = PyObject_CallMethod(py_instance, "decode", |
3643fc3f GM |
434 | "{s:i,s:i,s:s#}", |
435 | "time", _timehack, | |
436 | "duration", 10, | |
437 | "data", inbuf, inbuflen))) { /* NEWREF */ | |
438 | if (PyErr_Occurred()) | |
439 | PyErr_Print(); /* Returns void. */ | |
9d29ffad | 440 | |
3643fc3f GM |
441 | return SRD_ERR_PYTHON; /* TODO: More specific error? */ |
442 | } | |
036e6f67 | 443 | |
2557ad9d | 444 | Py_XDECREF(py_res); |
3643fc3f | 445 | return SRD_OK; |
1c6fa20f UH |
446 | } |
447 | ||
60b928b2 GM |
448 | /* Feed logic samples to decoder session. */ |
449 | int srd_session_feed(uint8_t *inbuf, uint64_t inbuflen) | |
450 | { | |
451 | GSList *d; | |
452 | for (d = decoders; d; d = d->next) { | |
453 | /* TODO: Error handling. */ | |
454 | ||
455 | int ret = srd_run_decoder(d->data, inbuf, inbuflen); | |
456 | ||
457 | if (ret != SRD_OK) { | |
458 | fprintf(stderr, "Decoder runtime error (%d)\n", ret); | |
459 | exit(1); | |
460 | } | |
461 | } | |
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 UH |
482 | Py_XDECREF(dec->py_mod); |
483 | ||
0d1cf0f8 UH |
484 | /* TODO: (g_)free dec itself? */ |
485 | ||
d752b12b | 486 | return SRD_OK; |
f9b54a6c UH |
487 | } |
488 | ||
489 | /** | |
490 | * TODO | |
491 | */ | |
d752b12b | 492 | static int srd_unload_all_decoders(void) |
f9b54a6c UH |
493 | { |
494 | GSList *l; | |
d752b12b | 495 | struct srd_decoder *dec; |
f9b54a6c | 496 | |
d752b12b | 497 | for (l = srd_list_decoders(); l; l = l->next) { |
f9b54a6c UH |
498 | dec = l->data; |
499 | /* TODO: Error handling. */ | |
d752b12b | 500 | srd_unload_decoder(dec); |
f9b54a6c UH |
501 | } |
502 | ||
d752b12b | 503 | return SRD_OK; |
f9b54a6c UH |
504 | } |
505 | ||
1c6fa20f UH |
506 | /** |
507 | * Shutdown libsigrokdecode. | |
508 | * | |
c75080f0 UH |
509 | * This frees all the memory allocated for protocol decoders and shuts down |
510 | * the Python interpreter. | |
511 | * | |
512 | * This function should only be called if there was a (successful!) invocation | |
513 | * of srd_init() before. Calling this function multiple times in a row, without | |
514 | * any successful srd_init() calls inbetween, is not allowed. | |
515 | * | |
d752b12b | 516 | * @return SRD_OK upon success, a (negative) error code otherwise. |
1c6fa20f | 517 | */ |
7ea73e33 | 518 | int srd_exit(void) |
1c6fa20f | 519 | { |
f9b54a6c UH |
520 | /* Unload/free all decoders, and then the list of decoders itself. */ |
521 | /* TODO: Error handling. */ | |
d752b12b | 522 | srd_unload_all_decoders(); |
f9b54a6c UH |
523 | g_slist_free(list_pds); |
524 | ||
1c6fa20f UH |
525 | /* Py_Finalize() returns void, any finalization errors are ignored. */ |
526 | Py_Finalize(); | |
527 | ||
d752b12b | 528 | return SRD_OK; |
1c6fa20f | 529 | } |