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b2c19614 | 1 | /* |
50bd5d25 | 2 | * This file is part of the libsigrokdecode project. |
b2c19614 BV |
3 | * |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
bc5f5a43 | 5 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> |
b2c19614 BV |
6 | * |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
36784362 | 21 | #include <config.h> |
f6c7eade MC |
22 | #include "libsigrokdecode-internal.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */ |
23 | #include "libsigrokdecode.h" | |
b2c19614 | 24 | #include <glib.h> |
1aef2f93 | 25 | #include <inttypes.h> |
0bdadba2 | 26 | #include <stdlib.h> |
32cfb920 | 27 | #include <stdint.h> |
b2c19614 | 28 | |
32cfb920 | 29 | /** @cond PRIVATE */ |
d906d3f9 | 30 | |
23a29d24 | 31 | extern SRD_PRIV GSList *sessions; |
b2c19614 | 32 | |
201a85a8 DE |
33 | /* module_sigrokdecode.c */ |
34 | extern SRD_PRIV PyObject *srd_logic_type; | |
b2c19614 | 35 | |
57790bc8 UH |
36 | /** @endcond */ |
37 | ||
b2c19614 | 38 | /** |
190b71cf | 39 | * @file |
8c664ca2 | 40 | * |
190b71cf | 41 | * Decoder instance handling. |
b2c19614 | 42 | */ |
4895418c UH |
43 | |
44 | /** | |
45 | * @defgroup grp_instances Decoder instances | |
46 | * | |
47 | * Decoder instance handling. | |
48 | * | |
49 | * @{ | |
50 | */ | |
51 | ||
7ce7775c | 52 | /** |
b33b8aa5 | 53 | * Set one or more options in a decoder instance. |
0bdadba2 | 54 | * |
361fdcaa UH |
55 | * Handled options are removed from the hash. |
56 | * | |
0bdadba2 BV |
57 | * @param di Decoder instance. |
58 | * @param options A GHashTable of options to set. | |
7ce7775c | 59 | * |
0bdadba2 | 60 | * @return SRD_OK upon success, a (negative) error code otherwise. |
8c664ca2 UH |
61 | * |
62 | * @since 0.1.0 | |
0bdadba2 | 63 | */ |
b33b8aa5 | 64 | SRD_API int srd_inst_option_set(struct srd_decoder_inst *di, |
0ff2d191 | 65 | GHashTable *options) |
0bdadba2 | 66 | { |
d841d5b2 | 67 | struct srd_decoder_option *sdo; |
84c1c0b5 | 68 | PyObject *py_di_options, *py_optval; |
2f395bff | 69 | GVariant *value; |
d841d5b2 UH |
70 | GSList *l; |
71 | double val_double; | |
2f395bff | 72 | gint64 val_int; |
84c1c0b5 | 73 | int ret; |
2f395bff | 74 | const char *val_str; |
0bdadba2 | 75 | |
3af0e345 UH |
76 | if (!di) { |
77 | srd_err("Invalid decoder instance."); | |
78 | return SRD_ERR_ARG; | |
79 | } | |
80 | ||
81 | if (!options) { | |
82 | srd_err("Invalid options GHashTable."); | |
83 | return SRD_ERR_ARG; | |
84 | } | |
85 | ||
c9bfccc6 | 86 | if (!PyObject_HasAttrString(di->decoder->py_dec, "options")) { |
0bdadba2 | 87 | /* Decoder has no options. */ |
e431d9cc BV |
88 | if (g_hash_table_size(options) == 0) { |
89 | /* No options provided. */ | |
90 | return SRD_OK; | |
91 | } else { | |
92 | srd_err("Protocol decoder has no options."); | |
93 | return SRD_ERR_ARG; | |
94 | } | |
0bdadba2 | 95 | return SRD_OK; |
e431d9cc | 96 | } |
0bdadba2 BV |
97 | |
98 | ret = SRD_ERR_PYTHON; | |
d841d5b2 | 99 | py_optval = NULL; |
119d6258 BV |
100 | |
101 | /* | |
84c1c0b5 | 102 | * The 'options' tuple is a class variable, but we need to |
119d6258 BV |
103 | * change it. Changing it directly will affect the entire class, |
104 | * so we need to create a new object for it, and populate that | |
105 | * instead. | |
106 | */ | |
a8b72b05 | 107 | if (!(py_di_options = PyObject_GetAttrString(di->py_inst, "options"))) |
0bdadba2 | 108 | goto err_out; |
119d6258 BV |
109 | Py_DECREF(py_di_options); |
110 | py_di_options = PyDict_New(); | |
111 | PyObject_SetAttrString(di->py_inst, "options", py_di_options); | |
0bdadba2 | 112 | |
d841d5b2 UH |
113 | for (l = di->decoder->options; l; l = l->next) { |
114 | sdo = l->data; | |
115 | if ((value = g_hash_table_lookup(options, sdo->id))) { | |
116 | /* A value was supplied for this option. */ | |
117 | if (!g_variant_type_equal(g_variant_get_type(value), | |
bd6594c0 | 118 | g_variant_get_type(sdo->def))) { |
d841d5b2 UH |
119 | srd_err("Option '%s' should have the same type " |
120 | "as the default value.", sdo->id); | |
121 | goto err_out; | |
122 | } | |
123 | } else { | |
124 | /* Use default for this option. */ | |
125 | value = sdo->def; | |
126 | } | |
127 | if (g_variant_is_of_type(value, G_VARIANT_TYPE_STRING)) { | |
128 | val_str = g_variant_get_string(value, NULL); | |
129 | if (!(py_optval = PyUnicode_FromString(val_str))) { | |
130 | /* Some UTF-8 encoding error. */ | |
131 | PyErr_Clear(); | |
132 | srd_err("Option '%s' requires a UTF-8 string value.", sdo->id); | |
133 | goto err_out; | |
134 | } | |
135 | } else if (g_variant_is_of_type(value, G_VARIANT_TYPE_INT64)) { | |
136 | val_int = g_variant_get_int64(value); | |
137 | if (!(py_optval = PyLong_FromLong(val_int))) { | |
138 | /* ValueError Exception */ | |
139 | PyErr_Clear(); | |
140 | srd_err("Option '%s' has invalid integer value.", sdo->id); | |
141 | goto err_out; | |
142 | } | |
143 | } else if (g_variant_is_of_type(value, G_VARIANT_TYPE_DOUBLE)) { | |
144 | val_double = g_variant_get_double(value); | |
145 | if (!(py_optval = PyFloat_FromDouble(val_double))) { | |
146 | /* ValueError Exception */ | |
147 | PyErr_Clear(); | |
148 | srd_err("Option '%s' has invalid float value.", | |
149 | sdo->id); | |
150 | goto err_out; | |
151 | } | |
152 | } | |
84c1c0b5 | 153 | if (PyDict_SetItemString(py_di_options, sdo->id, py_optval) == -1) |
0bdadba2 | 154 | goto err_out; |
d841d5b2 UH |
155 | /* Not harmful even if we used the default. */ |
156 | g_hash_table_remove(options, sdo->id); | |
157 | } | |
158 | if (g_hash_table_size(options) != 0) | |
159 | srd_warn("Unknown options specified for '%s'", di->inst_id); | |
0bdadba2 BV |
160 | |
161 | ret = SRD_OK; | |
162 | ||
163 | err_out: | |
84c1c0b5 | 164 | Py_XDECREF(py_optval); |
7fc7bde6 | 165 | if (PyErr_Occurred()) { |
201a85a8 | 166 | srd_exception_catch("Stray exception in srd_inst_option_set()"); |
7fc7bde6 BV |
167 | ret = SRD_ERR_PYTHON; |
168 | } | |
0bdadba2 BV |
169 | |
170 | return ret; | |
171 | } | |
172 | ||
6a15597a UH |
173 | /* Helper GComparefunc for g_slist_find_custom() in srd_inst_channel_set_all() */ |
174 | static gint compare_channel_id(const struct srd_channel *pdch, | |
175 | const char *channel_id) | |
f38ec285 | 176 | { |
6a15597a | 177 | return strcmp(pdch->id, channel_id); |
f38ec285 BV |
178 | } |
179 | ||
0bdadba2 | 180 | /** |
6a15597a | 181 | * Set all channels in a decoder instance. |
b33b8aa5 | 182 | * |
6a15597a UH |
183 | * This function sets _all_ channels for the specified decoder instance, i.e., |
184 | * it overwrites any channels that were already defined (if any). | |
0bdadba2 BV |
185 | * |
186 | * @param di Decoder instance. | |
6a15597a UH |
187 | * @param new_channels A GHashTable of channels to set. Key is channel name, |
188 | * value is the channel number. Samples passed to this | |
189 | * instance will be arranged in this order. | |
12243c22 | 190 | * |
0bdadba2 | 191 | * @return SRD_OK upon success, a (negative) error code otherwise. |
8c664ca2 | 192 | * |
cda2d36c | 193 | * @since 0.4.0 |
0bdadba2 | 194 | */ |
6a15597a | 195 | SRD_API int srd_inst_channel_set_all(struct srd_decoder_inst *di, |
cda2d36c | 196 | GHashTable *new_channels) |
0bdadba2 | 197 | { |
6a15597a | 198 | GVariant *channel_val; |
f38ec285 BV |
199 | GList *l; |
200 | GSList *sl; | |
6a15597a UH |
201 | struct srd_channel *pdch; |
202 | int *new_channelmap, new_channelnum, num_required_channels, i; | |
203 | char *channel_id; | |
0bdadba2 | 204 | |
cda2d36c UH |
205 | srd_dbg("Setting channels for instance %s with list of %d channels.", |
206 | di->inst_id, g_hash_table_size(new_channels)); | |
ce46beed | 207 | |
6a15597a UH |
208 | if (g_hash_table_size(new_channels) == 0) |
209 | /* No channels provided. */ | |
0bdadba2 BV |
210 | return SRD_OK; |
211 | ||
6a15597a UH |
212 | if (di->dec_num_channels == 0) { |
213 | /* Decoder has no channels. */ | |
214 | srd_err("Protocol decoder %s has no channels to define.", | |
c9bfccc6 | 215 | di->decoder->name); |
f38ec285 BV |
216 | return SRD_ERR_ARG; |
217 | } | |
0bdadba2 | 218 | |
077fa8ac | 219 | new_channelmap = g_malloc(sizeof(int) * di->dec_num_channels); |
0bdadba2 | 220 | |
38ff5046 | 221 | /* |
6a15597a UH |
222 | * For now, map all indexes to channel -1 (can be overridden later). |
223 | * This -1 is interpreted as an unspecified channel later. | |
38ff5046 | 224 | */ |
6a15597a UH |
225 | for (i = 0; i < di->dec_num_channels; i++) |
226 | new_channelmap[i] = -1; | |
227 | ||
228 | for (l = g_hash_table_get_keys(new_channels); l; l = l->next) { | |
229 | channel_id = l->data; | |
230 | channel_val = g_hash_table_lookup(new_channels, channel_id); | |
231 | if (!g_variant_is_of_type(channel_val, G_VARIANT_TYPE_INT32)) { | |
232 | /* Channel name was specified without a value. */ | |
233 | srd_err("No channel number was specified for %s.", | |
234 | channel_id); | |
235 | g_free(new_channelmap); | |
be873260 BV |
236 | return SRD_ERR_ARG; |
237 | } | |
6a15597a | 238 | new_channelnum = g_variant_get_int32(channel_val); |
6a15597a UH |
239 | if (!(sl = g_slist_find_custom(di->decoder->channels, channel_id, |
240 | (GCompareFunc)compare_channel_id))) { | |
241 | /* Fall back on optional channels. */ | |
242 | if (!(sl = g_slist_find_custom(di->decoder->opt_channels, | |
d841d5b2 | 243 | channel_id, (GCompareFunc)compare_channel_id))) { |
6a15597a | 244 | srd_err("Protocol decoder %s has no channel " |
d841d5b2 | 245 | "'%s'.", di->decoder->name, channel_id); |
6a15597a | 246 | g_free(new_channelmap); |
f38ec285 BV |
247 | return SRD_ERR_ARG; |
248 | } | |
249 | } | |
6a15597a UH |
250 | pdch = sl->data; |
251 | new_channelmap[pdch->order] = new_channelnum; | |
252 | srd_dbg("Setting channel mapping: %s (index %d) = channel %d.", | |
253 | pdch->id, pdch->order, new_channelnum); | |
38ff5046 UH |
254 | } |
255 | ||
6a15597a UH |
256 | srd_dbg("Final channel map:"); |
257 | num_required_channels = g_slist_length(di->decoder->channels); | |
258 | for (i = 0; i < di->dec_num_channels; i++) { | |
259 | srd_dbg(" - index %d = channel %d (%s)", i, new_channelmap[i], | |
d841d5b2 | 260 | (i < num_required_channels) ? "required" : "optional"); |
f38ec285 | 261 | } |
38ff5046 | 262 | |
6a15597a UH |
263 | /* Report an error if not all required channels were specified. */ |
264 | for (i = 0; i < num_required_channels; i++) { | |
265 | if (new_channelmap[i] != -1) | |
9bf7f71c | 266 | continue; |
6a15597a UH |
267 | pdch = g_slist_nth(di->decoder->channels, i)->data; |
268 | srd_err("Required channel '%s' (index %d) was not specified.", | |
269 | pdch->id, i); | |
9bf7f71c UH |
270 | return SRD_ERR; |
271 | } | |
272 | ||
6a15597a UH |
273 | g_free(di->dec_channelmap); |
274 | di->dec_channelmap = new_channelmap; | |
0bdadba2 | 275 | |
f38ec285 | 276 | return SRD_OK; |
0bdadba2 BV |
277 | } |
278 | ||
279 | /** | |
280 | * Create a new protocol decoder instance. | |
7ce7775c | 281 | * |
32cfb920 | 282 | * @param sess The session holding the protocol decoder instance. |
38ff5046 | 283 | * @param decoder_id Decoder 'id' field. |
0bdadba2 | 284 | * @param options GHashtable of options which override the defaults set in |
38ff5046 | 285 | * the decoder class. May be NULL. |
12243c22 | 286 | * |
a8b72b05 | 287 | * @return Pointer to a newly allocated struct srd_decoder_inst, or |
c9bfccc6 | 288 | * NULL in case of failure. |
8c664ca2 | 289 | * |
69075817 | 290 | * @since 0.3.0 |
7ce7775c | 291 | */ |
32cfb920 BV |
292 | SRD_API struct srd_decoder_inst *srd_inst_new(struct srd_session *sess, |
293 | const char *decoder_id, GHashTable *options) | |
b2c19614 | 294 | { |
c9bfccc6 | 295 | int i; |
b2c19614 | 296 | struct srd_decoder *dec; |
a8b72b05 BV |
297 | struct srd_decoder_inst *di; |
298 | char *inst_id; | |
b2c19614 | 299 | |
3262ef02 | 300 | i = 1; |
7a1712c4 | 301 | srd_dbg("Creating new %s instance.", decoder_id); |
7ce7775c | 302 | |
32cfb920 BV |
303 | if (session_is_valid(sess) != SRD_OK) { |
304 | srd_err("Invalid session."); | |
305 | return NULL; | |
306 | } | |
307 | ||
9d122fd5 | 308 | if (!(dec = srd_decoder_get_by_id(decoder_id))) { |
0bdadba2 | 309 | srd_err("Protocol decoder %s not found.", decoder_id); |
b2c19614 | 310 | return NULL; |
0bdadba2 | 311 | } |
b2c19614 | 312 | |
077fa8ac | 313 | di = g_malloc0(sizeof(struct srd_decoder_inst)); |
0bdadba2 | 314 | |
b2c19614 | 315 | di->decoder = dec; |
32cfb920 | 316 | di->sess = sess; |
3262ef02 | 317 | |
38ff5046 UH |
318 | if (options) { |
319 | inst_id = g_hash_table_lookup(options, "id"); | |
3262ef02 KP |
320 | if (inst_id) |
321 | di->inst_id = g_strdup(inst_id); | |
38ff5046 | 322 | g_hash_table_remove(options, "id"); |
3262ef02 KP |
323 | } |
324 | ||
325 | /* Create a unique instance ID (as none was provided). */ | |
326 | if (!di->inst_id) { | |
327 | di->inst_id = g_strdup_printf("%s-%d", decoder_id, i++); | |
328 | while (srd_inst_find_by_id(sess, di->inst_id)) { | |
329 | g_free(di->inst_id); | |
330 | di->inst_id = g_strdup_printf("%s-%d", decoder_id, i++); | |
331 | } | |
332 | } | |
b2c19614 | 333 | |
361fdcaa | 334 | /* |
6a15597a | 335 | * Prepare a default channel map, where samples come in the |
f38ec285 BV |
336 | * order in which the decoder class defined them. |
337 | */ | |
6a15597a UH |
338 | di->dec_num_channels = g_slist_length(di->decoder->channels) + |
339 | g_slist_length(di->decoder->opt_channels); | |
340 | if (di->dec_num_channels) { | |
077fa8ac UH |
341 | di->dec_channelmap = |
342 | g_malloc(sizeof(int) * di->dec_num_channels); | |
6a15597a UH |
343 | for (i = 0; i < di->dec_num_channels; i++) |
344 | di->dec_channelmap[i] = i; | |
37b94c20 BV |
345 | /* |
346 | * Will be used to prepare a sample at every iteration | |
347 | * of the instance's decode() method. | |
348 | */ | |
077fa8ac | 349 | di->channel_samples = g_malloc(di->dec_num_channels); |
f38ec285 | 350 | } |
f38ec285 | 351 | |
0bdadba2 | 352 | /* Create a new instance of this decoder class. */ |
a8b72b05 | 353 | if (!(di->py_inst = PyObject_CallObject(dec->py_dec, NULL))) { |
b2c19614 | 354 | if (PyErr_Occurred()) |
201a85a8 | 355 | srd_exception_catch("Failed to create %s instance", |
69075817 | 356 | decoder_id); |
6a15597a | 357 | g_free(di->dec_channelmap); |
0bdadba2 | 358 | g_free(di); |
7ce7775c | 359 | return NULL; |
b2c19614 | 360 | } |
7ce7775c | 361 | |
38ff5046 | 362 | if (options && srd_inst_option_set(di, options) != SRD_OK) { |
6a15597a | 363 | g_free(di->dec_channelmap); |
0bdadba2 BV |
364 | g_free(di); |
365 | return NULL; | |
366 | } | |
b2c19614 | 367 | |
21dfd91d UH |
368 | di->condition_list = NULL; |
369 | di->match_array = NULL; | |
4564e8e5 UH |
370 | di->abs_start_samplenum = 0; |
371 | di->abs_end_samplenum = 0; | |
21dfd91d UH |
372 | di->inbuf = NULL; |
373 | di->inbuflen = 0; | |
4564e8e5 | 374 | di->abs_cur_samplenum = 0; |
21dfd91d UH |
375 | di->old_pins_array = NULL; |
376 | di->thread_handle = NULL; | |
377 | di->got_new_samples = FALSE; | |
378 | di->handled_all_samples = FALSE; | |
379 | ||
f38ec285 | 380 | /* Instance takes input from a frontend by default. */ |
32cfb920 | 381 | sess->di_list = g_slist_append(sess->di_list, di); |
3262ef02 | 382 | srd_dbg("Created new %s instance with ID %s.", decoder_id, di->inst_id); |
f38ec285 | 383 | |
b2c19614 BV |
384 | return di; |
385 | } | |
386 | ||
582c8473 BV |
387 | /** |
388 | * Stack a decoder instance on top of another. | |
389 | * | |
32cfb920 | 390 | * @param sess The session holding the protocol decoder instances. |
4d2c7619 BV |
391 | * @param di_bottom The instance on top of which di_top will be stacked. |
392 | * @param di_top The instance to go on top. | |
582c8473 BV |
393 | * |
394 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
8c664ca2 | 395 | * |
69075817 | 396 | * @since 0.3.0 |
582c8473 | 397 | */ |
32cfb920 | 398 | SRD_API int srd_inst_stack(struct srd_session *sess, |
4d2c7619 BV |
399 | struct srd_decoder_inst *di_bottom, |
400 | struct srd_decoder_inst *di_top) | |
7ce7775c | 401 | { |
32cfb920 BV |
402 | |
403 | if (session_is_valid(sess) != SRD_OK) { | |
404 | srd_err("Invalid session."); | |
405 | return SRD_ERR_ARG; | |
406 | } | |
407 | ||
4d2c7619 | 408 | if (!di_bottom || !di_top) { |
d906d3f9 | 409 | srd_err("Invalid from/to instance pair."); |
7ce7775c BV |
410 | return SRD_ERR_ARG; |
411 | } | |
412 | ||
4d2c7619 | 413 | if (g_slist_find(sess->di_list, di_top)) { |
2072ae0c | 414 | /* Remove from the unstacked list. */ |
4d2c7619 | 415 | sess->di_list = g_slist_remove(sess->di_list, di_top); |
7ce7775c BV |
416 | } |
417 | ||
7ce7775c | 418 | /* Stack on top of source di. */ |
4d2c7619 BV |
419 | di_bottom->next_di = g_slist_append(di_bottom->next_di, di_top); |
420 | ||
d841d5b2 | 421 | srd_dbg("Stacked %s onto %s.", di_top->inst_id, di_bottom->inst_id); |
7ce7775c BV |
422 | |
423 | return SRD_OK; | |
424 | } | |
425 | ||
79d0013e KP |
426 | /** |
427 | * Search a decoder instance and its stack for instance ID. | |
428 | * | |
429 | * @param[in] inst_id ID to search for. | |
430 | * @param[in] stack A decoder instance, potentially with stacked instances. | |
431 | * | |
432 | * @return The matching instance, or NULL. | |
433 | */ | |
434 | static struct srd_decoder_inst *srd_inst_find_by_id_stack(const char *inst_id, | |
435 | struct srd_decoder_inst *stack) | |
436 | { | |
437 | const GSList *l; | |
438 | struct srd_decoder_inst *tmp, *di; | |
439 | ||
440 | if (!strcmp(stack->inst_id, inst_id)) | |
441 | return stack; | |
442 | ||
443 | /* Otherwise, look recursively in our stack. */ | |
444 | di = NULL; | |
445 | if (stack->next_di) { | |
446 | for (l = stack->next_di; l; l = l->next) { | |
447 | tmp = l->data; | |
448 | if (!strcmp(tmp->inst_id, inst_id)) { | |
449 | di = tmp; | |
450 | break; | |
451 | } | |
452 | } | |
453 | } | |
454 | ||
455 | return di; | |
456 | } | |
457 | ||
2072ae0c | 458 | /** |
361fdcaa UH |
459 | * Find a decoder instance by its instance ID. |
460 | * | |
79d0013e KP |
461 | * This will recurse to find the instance anywhere in the stack tree of the |
462 | * given session. | |
2072ae0c | 463 | * |
32cfb920 | 464 | * @param sess The session holding the protocol decoder instance. |
ed2306a6 | 465 | * @param inst_id The instance ID to be found. |
2072ae0c | 466 | * |
a8b72b05 | 467 | * @return Pointer to struct srd_decoder_inst, or NULL if not found. |
8c664ca2 | 468 | * |
69075817 | 469 | * @since 0.3.0 |
2072ae0c | 470 | */ |
32cfb920 BV |
471 | SRD_API struct srd_decoder_inst *srd_inst_find_by_id(struct srd_session *sess, |
472 | const char *inst_id) | |
7ce7775c BV |
473 | { |
474 | GSList *l; | |
a8b72b05 | 475 | struct srd_decoder_inst *tmp, *di; |
b2c19614 | 476 | |
32cfb920 BV |
477 | if (session_is_valid(sess) != SRD_OK) { |
478 | srd_err("Invalid session."); | |
479 | return NULL; | |
480 | } | |
481 | ||
7ce7775c | 482 | di = NULL; |
32cfb920 | 483 | for (l = sess->di_list; l; l = l->next) { |
7ce7775c | 484 | tmp = l->data; |
9bac00e0 | 485 | if ((di = srd_inst_find_by_id_stack(inst_id, tmp)) != NULL) |
7ce7775c | 486 | break; |
7ce7775c BV |
487 | } |
488 | ||
489 | return di; | |
490 | } | |
491 | ||
32cfb920 BV |
492 | static struct srd_decoder_inst *srd_sess_inst_find_by_obj( |
493 | struct srd_session *sess, const GSList *stack, | |
494 | const PyObject *obj) | |
495 | { | |
496 | const GSList *l; | |
497 | struct srd_decoder_inst *tmp, *di; | |
498 | ||
499 | if (session_is_valid(sess) != SRD_OK) { | |
500 | srd_err("Invalid session."); | |
501 | return NULL; | |
502 | } | |
503 | ||
504 | di = NULL; | |
505 | for (l = stack ? stack : sess->di_list; di == NULL && l != NULL; l = l->next) { | |
506 | tmp = l->data; | |
507 | if (tmp->py_inst == obj) | |
508 | di = tmp; | |
509 | else if (tmp->next_di) | |
510 | di = srd_sess_inst_find_by_obj(sess, tmp->next_di, obj); | |
511 | } | |
512 | ||
513 | return di; | |
514 | } | |
515 | ||
2072ae0c | 516 | /** |
361fdcaa UH |
517 | * Find a decoder instance by its Python object. |
518 | * | |
519 | * I.e. find that instance's instantiation of the sigrokdecode.Decoder class. | |
32cfb920 BV |
520 | * This will recurse to find the instance anywhere in the stack tree of all |
521 | * sessions. | |
2072ae0c | 522 | * |
361fdcaa UH |
523 | * @param stack Pointer to a GSList of struct srd_decoder_inst, indicating the |
524 | * stack to search. To start searching at the bottom level of | |
525 | * decoder instances, pass NULL. | |
511e2123 | 526 | * @param obj The Python class instantiation. |
2072ae0c | 527 | * |
a8b72b05 | 528 | * @return Pointer to struct srd_decoder_inst, or NULL if not found. |
57790bc8 UH |
529 | * |
530 | * @private | |
8c664ca2 UH |
531 | * |
532 | * @since 0.1.0 | |
2072ae0c | 533 | */ |
abeeed8b | 534 | SRD_PRIV struct srd_decoder_inst *srd_inst_find_by_obj(const GSList *stack, |
0ff2d191 | 535 | const PyObject *obj) |
2072ae0c | 536 | { |
32cfb920 BV |
537 | struct srd_decoder_inst *di; |
538 | struct srd_session *sess; | |
539 | GSList *l; | |
2072ae0c BV |
540 | |
541 | di = NULL; | |
32cfb920 BV |
542 | for (l = sessions; di == NULL && l != NULL; l = l->next) { |
543 | sess = l->data; | |
544 | di = srd_sess_inst_find_by_obj(sess, stack, obj); | |
2072ae0c BV |
545 | } |
546 | ||
547 | return di; | |
548 | } | |
549 | ||
21dfd91d UH |
550 | /** |
551 | * Set the list of initial (assumed) pin values. | |
552 | * | |
553 | * If the list already exists, do nothing. | |
554 | * | |
555 | * @param di Decoder instance to use. Must not be NULL. | |
556 | * | |
557 | * @private | |
558 | */ | |
559 | static void set_initial_pin_values(struct srd_decoder_inst *di) | |
560 | { | |
561 | int i; | |
562 | GString *s; | |
563 | PyObject *py_initial_pins; | |
564 | ||
565 | if (!di || !di->py_inst) { | |
566 | srd_err("Invalid decoder instance."); | |
567 | return; | |
568 | } | |
569 | ||
570 | /* Nothing to do if di->old_pins_array is already != NULL. */ | |
571 | if (di->old_pins_array) { | |
572 | srd_dbg("Initial pins already set, nothing to do."); | |
573 | return; | |
574 | } | |
575 | ||
576 | /* Create an array of old (previous sample) pins, init to 0. */ | |
577 | di->old_pins_array = g_array_sized_new(FALSE, TRUE, sizeof(uint8_t), di->dec_num_channels); | |
578 | g_array_set_size(di->old_pins_array, di->dec_num_channels); | |
579 | ||
580 | /* Check if the decoder has set self.initial_pins. */ | |
581 | if (!PyObject_HasAttrString(di->py_inst, "initial_pins")) { | |
582 | srd_dbg("Initial pins: all 0 (self.initial_pins not set)."); | |
583 | return; | |
584 | } | |
585 | ||
586 | /* Get self.initial_pins. */ | |
587 | py_initial_pins = PyObject_GetAttrString(di->py_inst, "initial_pins"); | |
588 | ||
589 | /* Fill di->old_pins_array based on self.initial_pins. */ | |
590 | s = g_string_sized_new(100); | |
591 | for (i = 0; i < di->dec_num_channels; i++) { | |
592 | di->old_pins_array->data[i] = PyLong_AsLong(PyList_GetItem(py_initial_pins, i)); | |
593 | g_string_append_printf(s, "%d, ", di->old_pins_array->data[i]); | |
594 | } | |
595 | s = g_string_truncate(s, s->len - 2); | |
596 | srd_dbg("Initial pins: %s.", s->str); | |
597 | g_string_free(s, TRUE); | |
598 | } | |
599 | ||
57790bc8 | 600 | /** @private */ |
ed416497 | 601 | SRD_PRIV int srd_inst_start(struct srd_decoder_inst *di) |
b2c19614 | 602 | { |
ed416497 | 603 | PyObject *py_res; |
2072ae0c | 604 | GSList *l; |
a8b72b05 | 605 | struct srd_decoder_inst *next_di; |
ed416497 | 606 | int ret; |
b2c19614 | 607 | |
7a1712c4 | 608 | srd_dbg("Calling start() method on protocol decoder instance %s.", |
ed416497 | 609 | di->inst_id); |
b2c19614 | 610 | |
21dfd91d | 611 | /* Run self.start(). */ |
ed416497 | 612 | if (!(py_res = PyObject_CallMethod(di->py_inst, "start", NULL))) { |
201a85a8 | 613 | srd_exception_catch("Protocol decoder instance %s", |
ed416497 | 614 | di->inst_id); |
7ce7775c BV |
615 | return SRD_ERR_PYTHON; |
616 | } | |
f38ec285 | 617 | Py_DecRef(py_res); |
7ce7775c | 618 | |
21dfd91d UH |
619 | /* Set the initial pins based on self.initial_pins. */ |
620 | set_initial_pin_values(di); | |
621 | ||
622 | /* Set self.samplenum to 0. */ | |
623 | PyObject_SetAttrString(di->py_inst, "samplenum", PyLong_FromLong(0)); | |
624 | ||
e27d3e67 GS |
625 | /* Set self.matched to None. */ |
626 | PyObject_SetAttrString(di->py_inst, "matched", Py_None); | |
21dfd91d | 627 | |
ed416497 | 628 | /* Start all the PDs stacked on top of this one. */ |
2072ae0c BV |
629 | for (l = di->next_di; l; l = l->next) { |
630 | next_di = l->data; | |
ed416497 BV |
631 | if ((ret = srd_inst_start(next_di)) != SRD_OK) |
632 | return ret; | |
2072ae0c BV |
633 | } |
634 | ||
b2c19614 BV |
635 | return SRD_OK; |
636 | } | |
637 | ||
21dfd91d UH |
638 | /** |
639 | * Check whether the specified sample matches the specified term. | |
640 | * | |
641 | * In the case of SRD_TERM_SKIP, this function can modify | |
642 | * term->num_samples_already_skipped. | |
643 | * | |
644 | * @param old_sample The value of the previous sample (0/1). | |
645 | * @param sample The value of the current sample (0/1). | |
646 | * @param term The term that should be checked for a match. Must not be NULL. | |
647 | * | |
648 | * @retval TRUE The current sample matches the specified term. | |
649 | * @retval FALSE The current sample doesn't match the specified term, or an | |
650 | * invalid term was provided. | |
651 | * | |
652 | * @private | |
653 | */ | |
654 | static gboolean sample_matches(uint8_t old_sample, uint8_t sample, struct srd_term *term) | |
655 | { | |
656 | if (!term) | |
657 | return FALSE; | |
658 | ||
659 | switch (term->type) { | |
660 | case SRD_TERM_HIGH: | |
661 | if (sample == 1) | |
662 | return TRUE; | |
663 | break; | |
664 | case SRD_TERM_LOW: | |
665 | if (sample == 0) | |
666 | return TRUE; | |
667 | break; | |
668 | case SRD_TERM_RISING_EDGE: | |
669 | if (old_sample == 0 && sample == 1) | |
670 | return TRUE; | |
671 | break; | |
672 | case SRD_TERM_FALLING_EDGE: | |
673 | if (old_sample == 1 && sample == 0) | |
674 | return TRUE; | |
675 | break; | |
676 | case SRD_TERM_EITHER_EDGE: | |
677 | if ((old_sample == 1 && sample == 0) || (old_sample == 0 && sample == 1)) | |
678 | return TRUE; | |
679 | break; | |
680 | case SRD_TERM_NO_EDGE: | |
681 | if ((old_sample == 0 && sample == 0) || (old_sample == 1 && sample == 1)) | |
682 | return TRUE; | |
683 | break; | |
684 | case SRD_TERM_SKIP: | |
685 | if (term->num_samples_already_skipped == term->num_samples_to_skip) | |
686 | return TRUE; | |
687 | term->num_samples_already_skipped++; | |
688 | break; | |
689 | default: | |
690 | srd_err("Unknown term type %d.", term->type); | |
691 | break; | |
692 | } | |
693 | ||
694 | return FALSE; | |
695 | } | |
696 | ||
697 | SRD_PRIV void match_array_free(struct srd_decoder_inst *di) | |
698 | { | |
699 | if (!di || !di->match_array) | |
700 | return; | |
701 | ||
702 | g_array_free(di->match_array, TRUE); | |
703 | di->match_array = NULL; | |
704 | } | |
705 | ||
706 | SRD_PRIV void condition_list_free(struct srd_decoder_inst *di) | |
707 | { | |
708 | GSList *l, *ll; | |
709 | ||
710 | if (!di) | |
711 | return; | |
712 | ||
713 | for (l = di->condition_list; l; l = l->next) { | |
714 | ll = l->data; | |
715 | if (ll) | |
716 | g_slist_free_full(ll, g_free); | |
717 | } | |
718 | ||
719 | di->condition_list = NULL; | |
720 | } | |
721 | ||
722 | static gboolean have_non_null_conds(const struct srd_decoder_inst *di) | |
723 | { | |
724 | GSList *l, *cond; | |
725 | ||
726 | if (!di) | |
727 | return FALSE; | |
728 | ||
729 | for (l = di->condition_list; l; l = l->next) { | |
730 | cond = l->data; | |
731 | if (cond) | |
732 | return TRUE; | |
733 | } | |
734 | ||
735 | return FALSE; | |
736 | } | |
737 | ||
738 | static void update_old_pins_array(struct srd_decoder_inst *di, | |
739 | const uint8_t *sample_pos) | |
740 | { | |
741 | uint8_t sample; | |
742 | int i, byte_offset, bit_offset; | |
743 | ||
744 | if (!di || !di->dec_channelmap || !sample_pos) | |
745 | return; | |
746 | ||
747 | for (i = 0; i < di->dec_num_channels; i++) { | |
748 | byte_offset = di->dec_channelmap[i] / 8; | |
749 | bit_offset = di->dec_channelmap[i] % 8; | |
750 | sample = *(sample_pos + byte_offset) & (1 << bit_offset) ? 1 : 0; | |
751 | di->old_pins_array->data[i] = sample; | |
752 | } | |
753 | } | |
754 | ||
755 | static gboolean term_matches(const struct srd_decoder_inst *di, | |
756 | struct srd_term *term, const uint8_t *sample_pos) | |
757 | { | |
758 | uint8_t old_sample, sample; | |
759 | int byte_offset, bit_offset, ch; | |
760 | ||
761 | if (!di || !di->dec_channelmap || !term || !sample_pos) | |
762 | return FALSE; | |
763 | ||
764 | /* Overwritten below (or ignored for SRD_TERM_SKIP). */ | |
765 | old_sample = sample = 0; | |
766 | ||
767 | if (term->type != SRD_TERM_SKIP) { | |
768 | ch = term->channel; | |
769 | byte_offset = di->dec_channelmap[ch] / 8; | |
770 | bit_offset = di->dec_channelmap[ch] % 8; | |
771 | sample = *(sample_pos + byte_offset) & (1 << bit_offset) ? 1 : 0; | |
772 | old_sample = di->old_pins_array->data[ch]; | |
773 | } | |
774 | ||
775 | return sample_matches(old_sample, sample, term); | |
776 | } | |
777 | ||
778 | static gboolean all_terms_match(const struct srd_decoder_inst *di, | |
779 | const GSList *cond, const uint8_t *sample_pos) | |
780 | { | |
781 | const GSList *l; | |
782 | struct srd_term *term; | |
783 | ||
784 | if (!di || !cond || !sample_pos) | |
785 | return FALSE; | |
786 | ||
787 | for (l = cond; l; l = l->next) { | |
788 | term = l->data; | |
789 | if (!term_matches(di, term, sample_pos)) | |
790 | return FALSE; | |
791 | } | |
792 | ||
793 | return TRUE; | |
794 | } | |
795 | ||
796 | static gboolean at_least_one_condition_matched( | |
797 | const struct srd_decoder_inst *di, unsigned int num_conditions) | |
798 | { | |
799 | unsigned int i; | |
800 | ||
801 | if (!di) | |
802 | return FALSE; | |
803 | ||
804 | for (i = 0; i < num_conditions; i++) { | |
805 | if (di->match_array->data[i]) | |
806 | return TRUE; | |
807 | } | |
808 | ||
809 | return FALSE; | |
810 | } | |
811 | ||
812 | static gboolean find_match(struct srd_decoder_inst *di) | |
813 | { | |
814 | static uint64_t s = 0; | |
815 | uint64_t i, j, num_samples_to_process; | |
816 | GSList *l, *cond; | |
817 | const uint8_t *sample_pos; | |
818 | unsigned int num_conditions; | |
819 | ||
820 | /* Check whether the condition list is NULL/empty. */ | |
821 | if (!di->condition_list) { | |
822 | srd_dbg("NULL/empty condition list, automatic match."); | |
823 | return TRUE; | |
824 | } | |
825 | ||
826 | /* Check whether we have any non-NULL conditions. */ | |
827 | if (!have_non_null_conds(di)) { | |
828 | srd_dbg("Only NULL conditions in list, automatic match."); | |
829 | return TRUE; | |
830 | } | |
831 | ||
4564e8e5 | 832 | num_samples_to_process = di->abs_end_samplenum - di->abs_cur_samplenum; |
21dfd91d UH |
833 | num_conditions = g_slist_length(di->condition_list); |
834 | ||
835 | /* di->match_array is NULL here. Create a new GArray. */ | |
836 | di->match_array = g_array_sized_new(FALSE, TRUE, sizeof(gboolean), num_conditions); | |
837 | g_array_set_size(di->match_array, num_conditions); | |
838 | ||
4564e8e5 | 839 | for (i = 0, s = 0; i < num_samples_to_process; i++, s++, (di->abs_cur_samplenum)++) { |
21dfd91d | 840 | |
4564e8e5 | 841 | sample_pos = di->inbuf + ((di->abs_cur_samplenum - di->abs_start_samplenum) * di->data_unitsize); |
21dfd91d UH |
842 | |
843 | /* Check whether the current sample matches at least one of the conditions (logical OR). */ | |
844 | /* IMPORTANT: We need to check all conditions, even if there was a match already! */ | |
845 | for (l = di->condition_list, j = 0; l; l = l->next, j++) { | |
846 | cond = l->data; | |
847 | if (!cond) | |
848 | continue; | |
849 | /* All terms in 'cond' must match (logical AND). */ | |
850 | di->match_array->data[j] = all_terms_match(di, cond, sample_pos); | |
851 | } | |
852 | ||
853 | update_old_pins_array(di, sample_pos); | |
854 | ||
855 | /* If at least one condition matched we're done. */ | |
856 | if (at_least_one_condition_matched(di, num_conditions)) | |
857 | return TRUE; | |
858 | } | |
859 | ||
860 | return FALSE; | |
861 | } | |
862 | ||
863 | /** | |
864 | * Process available samples and check if they match the defined conditions. | |
865 | * | |
866 | * This function returns if there is an error, or when a match is found, or | |
867 | * when all samples have been processed (whether a match was found or not). | |
868 | * | |
869 | * @param di The decoder instance to use. Must not be NULL. | |
870 | * @param found_match Will be set to TRUE if at least one condition matched, | |
871 | * FALSE otherwise. Must not be NULL. | |
872 | * | |
873 | * @retval SRD_OK No errors occured, see found_match for the result. | |
874 | * @retval SRD_ERR_ARG Invalid arguments. | |
875 | * | |
876 | * @private | |
877 | */ | |
878 | SRD_PRIV int process_samples_until_condition_match(struct srd_decoder_inst *di, gboolean *found_match) | |
879 | { | |
880 | if (!di || !found_match) | |
881 | return SRD_ERR_ARG; | |
882 | ||
883 | /* Check if any of the current condition(s) match. */ | |
884 | while (TRUE) { | |
885 | /* Feed the (next chunk of the) buffer to find_match(). */ | |
886 | *found_match = find_match(di); | |
887 | ||
888 | /* Did we handle all samples yet? */ | |
4564e8e5 UH |
889 | if (di->abs_cur_samplenum >= di->abs_end_samplenum) { |
890 | srd_dbg("Done, handled all samples (abs cur %" PRIu64 | |
891 | " / abs end %" PRIu64 ").", | |
892 | di->abs_cur_samplenum, di->abs_end_samplenum); | |
21dfd91d UH |
893 | return SRD_OK; |
894 | } | |
895 | ||
896 | /* If we didn't find a match, continue looking. */ | |
897 | if (!(*found_match)) | |
898 | continue; | |
899 | ||
900 | /* At least one condition matched, return. */ | |
901 | return SRD_OK; | |
902 | } | |
903 | ||
904 | return SRD_OK; | |
905 | } | |
906 | ||
907 | /** | |
908 | * Worker thread (per PD-stack). | |
909 | * | |
910 | * @param data Pointer to the lowest-level PD's device instance. | |
911 | * Must not be NULL. | |
912 | * | |
913 | * @return NULL if there was an error. | |
914 | */ | |
915 | static gpointer di_thread(gpointer data) | |
916 | { | |
917 | PyObject *py_res; | |
918 | struct srd_decoder_inst *di; | |
919 | ||
920 | if (!data) | |
921 | return NULL; | |
922 | ||
923 | di = data; | |
924 | ||
925 | /* Call self.decode(). Only returns if the PD throws an exception. */ | |
926 | Py_IncRef(di->py_inst); | |
927 | if (!(py_res = PyObject_CallMethod(di->py_inst, "decode", NULL))) { | |
928 | srd_exception_catch("Protocol decoder instance %s: ", di->inst_id); | |
929 | exit(1); /* TODO: Proper shutdown. This is a hack. */ | |
930 | return NULL; | |
931 | } | |
932 | Py_DecRef(py_res); | |
933 | ||
934 | return NULL; | |
935 | } | |
936 | ||
b2c19614 | 937 | /** |
e959f49a | 938 | * Decode a chunk of samples. |
b2c19614 | 939 | * |
4564e8e5 UH |
940 | * The calls to this function must provide the samples that shall be |
941 | * used by the protocol decoder | |
942 | * - in the correct order ([...]5, 6, 4, 7, 8[...] is a bug), | |
943 | * - starting from sample zero (2, 3, 4, 5, 6[...] is a bug), | |
944 | * - consecutively, with no gaps (0, 1, 2, 4, 5[...] is a bug). | |
945 | * | |
946 | * The start- and end-sample numbers are absolute sample numbers (relative | |
947 | * to the start of the whole capture/file/stream), i.e. they are not relative | |
948 | * sample numbers within the chunk specified by 'inbuf' and 'inbuflen'. | |
949 | * | |
950 | * Correct example (4096 samples total, 4 chunks @ 1024 samples each): | |
951 | * srd_inst_decode(di, 0, 1023, inbuf, 1024, 1); | |
952 | * srd_inst_decode(di, 1024, 2047, inbuf, 1024, 1); | |
953 | * srd_inst_decode(di, 2048, 3071, inbuf, 1024, 1); | |
954 | * srd_inst_decode(di, 3072, 4095, inbuf, 1024, 1); | |
955 | * | |
956 | * The chunk size ('inbuflen') can be arbitrary and can differ between calls. | |
957 | * | |
958 | * Correct example (4096 samples total, 7 chunks @ various samples each): | |
959 | * srd_inst_decode(di, 0, 1023, inbuf, 1024, 1); | |
960 | * srd_inst_decode(di, 1024, 1123, inbuf, 100, 1); | |
961 | * srd_inst_decode(di, 1124, 1423, inbuf, 300, 1); | |
962 | * srd_inst_decode(di, 1424, 1642, inbuf, 219, 1); | |
963 | * srd_inst_decode(di, 1643, 2047, inbuf, 405, 1); | |
964 | * srd_inst_decode(di, 2048, 3071, inbuf, 1024, 1); | |
965 | * srd_inst_decode(di, 3072, 4095, inbuf, 1024, 1); | |
966 | * | |
967 | * INCORRECT example (4096 samples total, 4 chunks @ 1024 samples each, but | |
968 | * the start- and end-samplenumbers are not absolute): | |
969 | * srd_inst_decode(di, 0, 1023, inbuf, 1024, 1); | |
970 | * srd_inst_decode(di, 0, 1023, inbuf, 1024, 1); | |
971 | * srd_inst_decode(di, 0, 1023, inbuf, 1024, 1); | |
972 | * srd_inst_decode(di, 0, 1023, inbuf, 1024, 1); | |
973 | * | |
ed416497 | 974 | * @param di The decoder instance to call. Must not be NULL. |
4564e8e5 UH |
975 | * @param abs_start_samplenum The absolute starting sample number for the |
976 | * buffer's sample set, relative to the start of capture. | |
977 | * @param abs_end_samplenum The absolute ending sample number for the | |
978 | * buffer's sample set, relative to the start of capture. | |
7a1712c4 UH |
979 | * @param inbuf The buffer to decode. Must not be NULL. |
980 | * @param inbuflen Length of the buffer. Must be > 0. | |
e959f49a | 981 | * @param unitsize The number of bytes per sample. Must be > 0. |
b2c19614 BV |
982 | * |
983 | * @return SRD_OK upon success, a (negative) error code otherwise. | |
57790bc8 UH |
984 | * |
985 | * @private | |
b2c19614 | 986 | */ |
21dfd91d | 987 | SRD_PRIV int srd_inst_decode(struct srd_decoder_inst *di, |
4564e8e5 | 988 | uint64_t abs_start_samplenum, uint64_t abs_end_samplenum, |
cda2d36c | 989 | const uint8_t *inbuf, uint64_t inbuflen, uint64_t unitsize) |
b2c19614 | 990 | { |
d906d3f9 | 991 | PyObject *py_res; |
bc5f5a43 | 992 | srd_logic *logic; |
04867deb | 993 | long apiver; |
b2c19614 | 994 | |
d906d3f9 | 995 | /* Return an error upon unusable input. */ |
7a1712c4 UH |
996 | if (!di) { |
997 | srd_dbg("empty decoder instance"); | |
d906d3f9 BV |
998 | return SRD_ERR_ARG; |
999 | } | |
7a1712c4 UH |
1000 | if (!inbuf) { |
1001 | srd_dbg("NULL buffer pointer"); | |
d906d3f9 BV |
1002 | return SRD_ERR_ARG; |
1003 | } | |
1004 | if (inbuflen == 0) { | |
7a1712c4 | 1005 | srd_dbg("empty buffer"); |
d906d3f9 | 1006 | return SRD_ERR_ARG; |
80f8083b UH |
1007 | } |
1008 | if (unitsize == 0) { | |
1009 | srd_dbg("unitsize 0"); | |
1010 | return SRD_ERR_ARG; | |
d906d3f9 | 1011 | } |
b2c19614 | 1012 | |
21dfd91d | 1013 | di->data_unitsize = unitsize; |
2730fe23 | 1014 | |
4564e8e5 | 1015 | srd_dbg("Decoding: abs start sample %" PRIu64 ", abs end sample %" |
2730fe23 | 1016 | PRIu64 " (%" PRIu64 " samples, %" PRIu64 " bytes, unitsize = " |
4564e8e5 UH |
1017 | "%d), instance %s.", abs_start_samplenum, abs_end_samplenum, |
1018 | abs_end_samplenum - abs_start_samplenum, inbuflen, di->data_unitsize, | |
2730fe23 UH |
1019 | di->inst_id); |
1020 | ||
04867deb UH |
1021 | apiver = srd_decoder_apiver(di->decoder); |
1022 | ||
1023 | if (apiver == 2) { | |
1024 | /* | |
1025 | * Create new srd_logic object. Each iteration around the PD's | |
1026 | * loop will fill one sample into this object. | |
1027 | */ | |
1028 | logic = PyObject_New(srd_logic, (PyTypeObject *)srd_logic_type); | |
1029 | Py_INCREF(logic); | |
1030 | logic->di = (struct srd_decoder_inst *)di; | |
4564e8e5 | 1031 | logic->abs_start_samplenum = abs_start_samplenum; |
04867deb UH |
1032 | logic->itercnt = 0; |
1033 | logic->inbuf = (uint8_t *)inbuf; | |
1034 | logic->inbuflen = inbuflen; | |
1035 | logic->sample = PyList_New(2); | |
1036 | Py_INCREF(logic->sample); | |
1037 | ||
1038 | Py_IncRef(di->py_inst); | |
1039 | if (!(py_res = PyObject_CallMethod(di->py_inst, "decode", | |
4564e8e5 | 1040 | "KKO", abs_start_samplenum, abs_end_samplenum, logic))) { |
04867deb UH |
1041 | srd_exception_catch("Protocol decoder instance %s", |
1042 | di->inst_id); | |
1043 | return SRD_ERR_PYTHON; | |
1044 | } | |
1045 | Py_DecRef(py_res); | |
21dfd91d UH |
1046 | } else { |
1047 | /* If this is the first call, start the worker thread. */ | |
1048 | if (!di->thread_handle) | |
1049 | di->thread_handle = g_thread_new("di_thread", | |
1050 | di_thread, di); | |
1051 | ||
1052 | /* Push the new sample chunk to the worker thread. */ | |
1053 | g_mutex_lock(&di->data_mutex); | |
4564e8e5 UH |
1054 | di->abs_start_samplenum = abs_start_samplenum; |
1055 | di->abs_end_samplenum = abs_end_samplenum; | |
21dfd91d UH |
1056 | di->inbuf = inbuf; |
1057 | di->inbuflen = inbuflen; | |
1058 | di->got_new_samples = TRUE; | |
1059 | di->handled_all_samples = FALSE; | |
1060 | ||
1061 | /* Signal the thread that we have new data. */ | |
1062 | g_cond_signal(&di->got_new_samples_cond); | |
1063 | g_mutex_unlock(&di->data_mutex); | |
1064 | ||
1065 | /* When all samples in this chunk were handled, return. */ | |
1066 | g_mutex_lock(&di->data_mutex); | |
1067 | while (!di->handled_all_samples) | |
1068 | g_cond_wait(&di->handled_all_samples_cond, &di->data_mutex); | |
1069 | g_mutex_unlock(&di->data_mutex); | |
b2c19614 | 1070 | } |
bc5f5a43 | 1071 | |
b2c19614 BV |
1072 | return SRD_OK; |
1073 | } | |
1074 | ||
57790bc8 | 1075 | /** @private */ |
12243c22 | 1076 | SRD_PRIV void srd_inst_free(struct srd_decoder_inst *di) |
fa12a21e BV |
1077 | { |
1078 | GSList *l; | |
1079 | struct srd_pd_output *pdo; | |
1080 | ||
a8b72b05 | 1081 | srd_dbg("Freeing instance %s", di->inst_id); |
fa12a21e | 1082 | |
a8b72b05 BV |
1083 | Py_DecRef(di->py_inst); |
1084 | g_free(di->inst_id); | |
6a15597a | 1085 | g_free(di->dec_channelmap); |
d2297b87 | 1086 | g_free(di->channel_samples); |
fa12a21e BV |
1087 | g_slist_free(di->next_di); |
1088 | for (l = di->pd_output; l; l = l->next) { | |
1089 | pdo = l->data; | |
1090 | g_free(pdo->proto_id); | |
1091 | g_free(pdo); | |
1092 | } | |
1093 | g_slist_free(di->pd_output); | |
e592ac89 | 1094 | g_free(di); |
fa12a21e BV |
1095 | } |
1096 | ||
57790bc8 | 1097 | /** @private */ |
3262ef02 | 1098 | SRD_PRIV void srd_inst_free_all(struct srd_session *sess) |
fa12a21e | 1099 | { |
32cfb920 BV |
1100 | if (session_is_valid(sess) != SRD_OK) { |
1101 | srd_err("Invalid session."); | |
1102 | return; | |
1103 | } | |
1104 | ||
3262ef02 | 1105 | g_slist_free_full(sess->di_list, (GDestroyNotify)srd_inst_free); |
fa12a21e | 1106 | } |
b2c19614 | 1107 | |
4895418c | 1108 | /** @} */ |