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1c6fa20f | 1 | /* |
50bd5d25 | 2 | * This file is part of the libsigrokdecode project. |
1c6fa20f UH |
3 | * |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
bc5f5a43 | 5 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> |
1c6fa20f UH |
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 2 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 | |
4539e9ca | 18 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
1c6fa20f UH |
19 | */ |
20 | ||
d841d5b2 UH |
21 | #ifndef LIBSIGROKDECODE_LIBSIGROKDECODE_H |
22 | #define LIBSIGROKDECODE_LIBSIGROKDECODE_H | |
1c6fa20f | 23 | |
1c6fa20f | 24 | #include <stdint.h> |
5c55017c | 25 | #include <glib.h> |
1c6fa20f | 26 | |
253f9603 UH |
27 | #ifdef __cplusplus |
28 | extern "C" { | |
29 | #endif | |
30 | ||
32cfb920 BV |
31 | struct srd_session; |
32 | ||
54fdeeef UH |
33 | /** |
34 | * @file | |
35 | * | |
36 | * The public libsigrokdecode header file to be used by frontends. | |
37 | * | |
38 | * This is the only file that libsigrokdecode users (frontends) are supposed | |
39 | * to use and include. There are other header files which get installed with | |
40 | * libsigrokdecode, but those are not meant to be used directly by frontends. | |
41 | * | |
42 | * The correct way to get/use the libsigrokdecode API functions is: | |
43 | * | |
44 | * @code{.c} | |
c1f86f02 | 45 | * #include <libsigrokdecode/libsigrokdecode.h> |
54fdeeef UH |
46 | * @endcode |
47 | */ | |
48 | ||
a4898be7 | 49 | /* |
a4898be7 UH |
50 | * All possible return codes of libsigrokdecode functions must be listed here. |
51 | * Functions should never return hardcoded numbers as status, but rather | |
47dfa77d | 52 | * use these enum values. All error codes are negative numbers. |
a4898be7 UH |
53 | * |
54 | * The error codes are globally unique in libsigrokdecode, i.e. if one of the | |
55 | * libsigrokdecode functions returns a "malloc error" it must be exactly the | |
56 | * same return value as used by all other functions to indicate "malloc error". | |
57 | * There must be no functions which indicate two different errors via the | |
58 | * same return code. | |
59 | * | |
60 | * Also, for compatibility reasons, no defined return codes are ever removed | |
47dfa77d | 61 | * or reused for different errors later. You can only add new entries and |
a4898be7 UH |
62 | * return codes, but never remove or redefine existing ones. |
63 | */ | |
47dfa77d UH |
64 | |
65 | /** Status/error codes returned by libsigrokdecode functions. */ | |
af9527d1 | 66 | enum srd_error_code { |
47dfa77d UH |
67 | SRD_OK = 0, /**< No error */ |
68 | SRD_ERR = -1, /**< Generic/unspecified error */ | |
69 | SRD_ERR_MALLOC = -2, /**< Malloc/calloc/realloc error */ | |
70 | SRD_ERR_ARG = -3, /**< Function argument error */ | |
71 | SRD_ERR_BUG = -4, /**< Errors hinting at internal bugs */ | |
72 | SRD_ERR_PYTHON = -5, /**< Python C API error */ | |
73 | SRD_ERR_DECODERS_DIR = -6, /**< Protocol decoder path invalid */ | |
3f3c4614 | 74 | SRD_ERR_TERM_REQ = -7, /**< Termination requested */ |
47dfa77d UH |
75 | |
76 | /* | |
77 | * Note: When adding entries here, don't forget to also update the | |
78 | * srd_strerror() and srd_strerror_name() functions in error.c. | |
79 | */ | |
80 | }; | |
7c24d086 | 81 | |
43c0a640 | 82 | /* libsigrokdecode loglevels. */ |
af9527d1 | 83 | enum srd_loglevel { |
47dfa77d UH |
84 | SRD_LOG_NONE = 0, /**< Output no messages at all. */ |
85 | SRD_LOG_ERR = 1, /**< Output error messages. */ | |
86 | SRD_LOG_WARN = 2, /**< Output warnings. */ | |
87 | SRD_LOG_INFO = 3, /**< Output informational messages. */ | |
88 | SRD_LOG_DBG = 4, /**< Output debug messages. */ | |
89 | SRD_LOG_SPEW = 5, /**< Output very noisy debug messages. */ | |
90 | }; | |
43c0a640 | 91 | |
55c3c5f4 UH |
92 | /* |
93 | * Use SRD_API to mark public API symbols, and SRD_PRIV for private symbols. | |
94 | * | |
95 | * Variables and functions marked 'static' are private already and don't | |
d523eae6 | 96 | * need SRD_PRIV. However, functions which are not static (because they need |
55c3c5f4 UH |
97 | * to be used in other libsigrokdecode-internal files) but are also not |
98 | * meant to be part of the public libsigrokdecode API, must use SRD_PRIV. | |
99 | * | |
100 | * This uses the 'visibility' feature of gcc (requires gcc >= 4.0). | |
101 | * | |
a4cb05f7 UH |
102 | * This feature is not available on MinGW/Windows, as it is a feature of |
103 | * ELF files and MinGW/Windows uses PE files. | |
104 | * | |
55c3c5f4 UH |
105 | * Details: http://gcc.gnu.org/wiki/Visibility |
106 | */ | |
107 | ||
108 | /* Marks public libsigrokdecode API symbols. */ | |
a4cb05f7 | 109 | #ifndef _WIN32 |
55c3c5f4 | 110 | #define SRD_API __attribute__((visibility("default"))) |
a4cb05f7 UH |
111 | #else |
112 | #define SRD_API | |
113 | #endif | |
55c3c5f4 UH |
114 | |
115 | /* Marks private, non-public libsigrokdecode symbols (not part of the API). */ | |
a4cb05f7 | 116 | #ifndef _WIN32 |
55c3c5f4 | 117 | #define SRD_PRIV __attribute__((visibility("hidden"))) |
a4cb05f7 UH |
118 | #else |
119 | #define SRD_PRIV | |
120 | #endif | |
55c3c5f4 | 121 | |
c9bfccc6 UH |
122 | /* |
123 | * When adding an output type, don't forget to... | |
124 | * - expose it to PDs in controller.c:PyInit_sigrokdecode() | |
125 | * - add a check in module_sigrokdecode.c:Decoder_put() | |
126 | * - add a debug string in type_decoder.c:OUTPUT_TYPES | |
127 | */ | |
af9527d1 | 128 | enum srd_output_type { |
94d43b37 | 129 | SRD_OUTPUT_ANN, |
f2a5df42 | 130 | SRD_OUTPUT_PYTHON, |
15969949 | 131 | SRD_OUTPUT_BINARY, |
7ee0c40b | 132 | SRD_OUTPUT_META, |
e5080882 BV |
133 | }; |
134 | ||
af9527d1 | 135 | enum srd_configkey { |
ed416497 | 136 | SRD_CONF_SAMPLERATE = 10000, |
32cfb920 BV |
137 | }; |
138 | ||
d752b12b | 139 | struct srd_decoder { |
775dda7a | 140 | /** The decoder ID. Must be non-NULL and unique for all decoders. */ |
31b82285 | 141 | char *id; |
775dda7a | 142 | |
361fdcaa | 143 | /** The (short) decoder name. Must be non-NULL. */ |
31b82285 | 144 | char *name; |
775dda7a | 145 | |
122e9a90 | 146 | /** The (long) decoder name. Must be non-NULL. */ |
75a282e5 | 147 | char *longname; |
775dda7a | 148 | |
361fdcaa | 149 | /** A (short, one-line) description of the decoder. Must be non-NULL. */ |
5c55017c | 150 | char *desc; |
775dda7a | 151 | |
361fdcaa UH |
152 | /** |
153 | * The license of the decoder. Valid values: "gplv2+", "gplv3+". | |
154 | * Other values are currently not allowed. Must be non-NULL. | |
155 | */ | |
75a282e5 UH |
156 | char *license; |
157 | ||
d480174d UH |
158 | /** List of possible decoder input IDs. */ |
159 | GSList *inputs; | |
160 | ||
161 | /** List of possible decoder output IDs. */ | |
162 | GSList *outputs; | |
163 | ||
6a15597a UH |
164 | /** List of channels required by this decoder. */ |
165 | GSList *channels; | |
f38ec285 | 166 | |
6a15597a UH |
167 | /** List of optional channels for this decoder. */ |
168 | GSList *opt_channels; | |
f38ec285 | 169 | |
361fdcaa | 170 | /** |
c9bfccc6 | 171 | * List of NULL-terminated char[], containing descriptions of the |
15969949 BV |
172 | * supported annotation output. |
173 | */ | |
e97b6ef5 | 174 | GSList *annotations; |
15969949 | 175 | |
1ce46817 UH |
176 | /** |
177 | * List of annotation rows (row items: id, description, and a list | |
178 | * of annotation classes belonging to this row). | |
179 | */ | |
180 | GSList *annotation_rows; | |
181 | ||
d75d8a7c BV |
182 | /** |
183 | * List of NULL-terminated char[], containing descriptions of the | |
184 | * supported binary output. | |
185 | */ | |
186 | GSList *binary; | |
187 | ||
d841d5b2 | 188 | /** List of decoder options. */ |
2f395bff BV |
189 | GSList *options; |
190 | ||
361fdcaa | 191 | /** Python module. */ |
f6c7eade | 192 | void *py_mod; |
b2c19614 | 193 | |
361fdcaa | 194 | /** sigrokdecode.Decoder class. */ |
f6c7eade | 195 | void *py_dec; |
74911b4c GM |
196 | }; |
197 | ||
97b874bd UH |
198 | enum srd_initial_pin { |
199 | SRD_INITIAL_PIN_LOW, | |
200 | SRD_INITIAL_PIN_HIGH, | |
201 | SRD_INITIAL_PIN_SAME_AS_SAMPLE0, | |
202 | }; | |
203 | ||
361fdcaa | 204 | /** |
6a15597a UH |
205 | * Structure which contains information about one protocol decoder channel. |
206 | * For example, I2C has two channels, SDA and SCL. | |
361fdcaa | 207 | */ |
6a15597a UH |
208 | struct srd_channel { |
209 | /** The ID of the channel. Must be non-NULL. */ | |
f38ec285 | 210 | char *id; |
6a15597a | 211 | /** The name of the channel. Must not be NULL. */ |
f38ec285 | 212 | char *name; |
6a15597a | 213 | /** The description of the channel. Must not be NULL. */ |
f38ec285 | 214 | char *desc; |
6a15597a | 215 | /** The index of the channel, i.e. its order in the list of channels. */ |
f38ec285 BV |
216 | int order; |
217 | }; | |
218 | ||
2f395bff BV |
219 | struct srd_decoder_option { |
220 | char *id; | |
221 | char *desc; | |
222 | GVariant *def; | |
d841d5b2 | 223 | GSList *values; |
2f395bff BV |
224 | }; |
225 | ||
1ce46817 UH |
226 | struct srd_decoder_annotation_row { |
227 | char *id; | |
228 | char *desc; | |
229 | GSList *ann_classes; | |
230 | }; | |
231 | ||
a8b72b05 | 232 | struct srd_decoder_inst { |
b2c19614 | 233 | struct srd_decoder *decoder; |
32cfb920 | 234 | struct srd_session *sess; |
f6c7eade | 235 | void *py_inst; |
a8b72b05 | 236 | char *inst_id; |
b2c19614 | 237 | GSList *pd_output; |
6a15597a UH |
238 | int dec_num_channels; |
239 | int *dec_channelmap; | |
f38ec285 | 240 | int data_unitsize; |
6a15597a | 241 | uint8_t *channel_samples; |
7ce7775c | 242 | GSList *next_di; |
21dfd91d UH |
243 | |
244 | /** List of conditions a PD wants to wait for. */ | |
245 | GSList *condition_list; | |
246 | ||
247 | /** Array of booleans denoting which conditions matched. */ | |
248 | GArray *match_array; | |
249 | ||
250 | /** Absolute start sample number. */ | |
4564e8e5 | 251 | uint64_t abs_start_samplenum; |
21dfd91d UH |
252 | |
253 | /** Absolute end sample number. */ | |
4564e8e5 | 254 | uint64_t abs_end_samplenum; |
21dfd91d UH |
255 | |
256 | /** Pointer to the buffer/chunk of input samples. */ | |
257 | const uint8_t *inbuf; | |
258 | ||
259 | /** Length (in bytes) of the input sample buffer. */ | |
260 | uint64_t inbuflen; | |
261 | ||
262 | /** Absolute current samplenumber. */ | |
4564e8e5 | 263 | uint64_t abs_cur_samplenum; |
21dfd91d UH |
264 | |
265 | /** Array of "old" (previous sample) pin values. */ | |
266 | GArray *old_pins_array; | |
267 | ||
268 | /** Handle for this PD stack's worker thread. */ | |
269 | GThread *thread_handle; | |
270 | ||
271 | /** Indicates whether new samples are available for processing. */ | |
272 | gboolean got_new_samples; | |
273 | ||
274 | /** Indicates whether the worker thread has handled all samples. */ | |
275 | gboolean handled_all_samples; | |
276 | ||
04383ea8 GS |
277 | /** Requests termination of wait() and decode(). */ |
278 | gboolean want_wait_terminate; | |
279 | ||
d4d8ac2a SA |
280 | /** Indicates the current state of the decoder stack. */ |
281 | int decoder_state; | |
282 | ||
21dfd91d UH |
283 | GCond got_new_samples_cond; |
284 | GCond handled_all_samples_cond; | |
285 | GMutex data_mutex; | |
31b82285 | 286 | }; |
287 | ||
e5080882 BV |
288 | struct srd_pd_output { |
289 | int pdo_id; | |
290 | int output_type; | |
a8b72b05 | 291 | struct srd_decoder_inst *di; |
94d43b37 | 292 | char *proto_id; |
7ee0c40b BV |
293 | /* Only used for OUTPUT_META. */ |
294 | const GVariantType *meta_type; | |
295 | char *meta_name; | |
296 | char *meta_descr; | |
e5080882 BV |
297 | }; |
298 | ||
94d43b37 | 299 | struct srd_proto_data { |
15969949 BV |
300 | uint64_t start_sample; |
301 | uint64_t end_sample; | |
302 | struct srd_pd_output *pdo; | |
983cb0f5 | 303 | void *data; |
15969949 | 304 | }; |
0b922460 | 305 | struct srd_proto_data_annotation { |
280d554c | 306 | int ann_class; |
0b922460 BV |
307 | char **ann_text; |
308 | }; | |
d75d8a7c BV |
309 | struct srd_proto_data_binary { |
310 | int bin_class; | |
311 | uint64_t size; | |
312 | const unsigned char *data; | |
313 | }; | |
15969949 | 314 | |
2372b199 UH |
315 | typedef void (*srd_pd_output_callback)(struct srd_proto_data *pdata, |
316 | void *cb_data); | |
ae53d0a5 | 317 | |
983cb0f5 BV |
318 | struct srd_pd_callback { |
319 | int output_type; | |
2372b199 | 320 | srd_pd_output_callback cb; |
41a5d962 | 321 | void *cb_data; |
983cb0f5 | 322 | }; |
bc5f5a43 | 323 | |
909fbf41 | 324 | /* srd.c */ |
abeeed8b | 325 | SRD_API int srd_init(const char *path); |
55c3c5f4 | 326 | SRD_API int srd_exit(void); |
1a41642e | 327 | SRD_API GSList *srd_searchpaths_get(void); |
909fbf41 BV |
328 | |
329 | /* session.c */ | |
32cfb920 BV |
330 | SRD_API int srd_session_new(struct srd_session **sess); |
331 | SRD_API int srd_session_start(struct srd_session *sess); | |
ed416497 | 332 | SRD_API int srd_session_metadata_set(struct srd_session *sess, int key, |
32cfb920 BV |
333 | GVariant *data); |
334 | SRD_API int srd_session_send(struct srd_session *sess, | |
4564e8e5 | 335 | uint64_t abs_start_samplenum, uint64_t abs_end_samplenum, |
cda2d36c | 336 | const uint8_t *inbuf, uint64_t inbuflen, uint64_t unitsize); |
9553e962 | 337 | SRD_API int srd_session_terminate_reset(struct srd_session *sess); |
32cfb920 BV |
338 | SRD_API int srd_session_destroy(struct srd_session *sess); |
339 | SRD_API int srd_pd_output_callback_add(struct srd_session *sess, | |
2372b199 | 340 | int output_type, srd_pd_output_callback cb, void *cb_data); |
b2c19614 | 341 | |
909fbf41 | 342 | /* decoder.c */ |
38ff5046 | 343 | SRD_API const GSList *srd_decoder_list(void); |
9d122fd5 BV |
344 | SRD_API struct srd_decoder *srd_decoder_get_by_id(const char *id); |
345 | SRD_API int srd_decoder_load(const char *name); | |
909fbf41 | 346 | SRD_API char *srd_decoder_doc_get(const struct srd_decoder *dec); |
9d122fd5 | 347 | SRD_API int srd_decoder_unload(struct srd_decoder *dec); |
8ad6e500 UH |
348 | SRD_API int srd_decoder_load_all(void); |
349 | SRD_API int srd_decoder_unload_all(void); | |
b2c19614 | 350 | |
909fbf41 BV |
351 | /* instance.c */ |
352 | SRD_API int srd_inst_option_set(struct srd_decoder_inst *di, | |
353 | GHashTable *options); | |
6a15597a | 354 | SRD_API int srd_inst_channel_set_all(struct srd_decoder_inst *di, |
cda2d36c | 355 | GHashTable *channels); |
909fbf41 BV |
356 | SRD_API struct srd_decoder_inst *srd_inst_new(struct srd_session *sess, |
357 | const char *id, GHashTable *options); | |
358 | SRD_API int srd_inst_stack(struct srd_session *sess, | |
359 | struct srd_decoder_inst *di_from, struct srd_decoder_inst *di_to); | |
360 | SRD_API struct srd_decoder_inst *srd_inst_find_by_id(struct srd_session *sess, | |
361 | const char *inst_id); | |
97b874bd UH |
362 | SRD_API int srd_inst_initial_pins_set_all(struct srd_decoder_inst *di, |
363 | GArray *initial_pins); | |
c9bfccc6 | 364 | |
909fbf41 | 365 | /* log.c */ |
2372b199 | 366 | typedef int (*srd_log_callback)(void *cb_data, int loglevel, |
0082d592 | 367 | const char *format, va_list args); |
55c3c5f4 UH |
368 | SRD_API int srd_log_loglevel_set(int loglevel); |
369 | SRD_API int srd_log_loglevel_get(void); | |
c7b211b1 | 370 | SRD_API int srd_log_callback_get(srd_log_callback *cb, void **cb_data); |
2372b199 | 371 | SRD_API int srd_log_callback_set(srd_log_callback cb, void *cb_data); |
0082d592 | 372 | SRD_API int srd_log_callback_set_default(void); |
1c6fa20f | 373 | |
909fbf41 BV |
374 | /* error.c */ |
375 | SRD_API const char *srd_strerror(int error_code); | |
376 | SRD_API const char *srd_strerror_name(int error_code); | |
0c081c63 | 377 | |
909fbf41 | 378 | /* version.c */ |
0c081c63 UH |
379 | SRD_API int srd_package_version_major_get(void); |
380 | SRD_API int srd_package_version_minor_get(void); | |
381 | SRD_API int srd_package_version_micro_get(void); | |
382 | SRD_API const char *srd_package_version_string_get(void); | |
0c081c63 UH |
383 | SRD_API int srd_lib_version_current_get(void); |
384 | SRD_API int srd_lib_version_revision_get(void); | |
385 | SRD_API int srd_lib_version_age_get(void); | |
386 | SRD_API const char *srd_lib_version_string_get(void); | |
cdb49509 UH |
387 | SRD_API GSList *srd_buildinfo_libs_get(void); |
388 | SRD_API char *srd_buildinfo_host_get(void); | |
0c081c63 | 389 | |
2b628af1 BV |
390 | #include "version.h" |
391 | ||
253f9603 UH |
392 | #ifdef __cplusplus |
393 | } | |
394 | #endif | |
395 | ||
1c6fa20f | 396 | #endif |