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testsuite: Add some basic tests for loading PDs.
[libsigrokdecode.git] / libsigrokdecode.h.in
CommitLineData
1c6fa20f 1/*
50bd5d25 2 * This file is part of the libsigrokdecode project.
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3 *
4 * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
bc5f5a43 5 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
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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
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
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22#ifndef LIBSIGROKDECODE_SIGROKDECODE_H
23#define LIBSIGROKDECODE_SIGROKDECODE_H
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24
25#include <Python.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
26#include <stdint.h>
5c55017c 27#include <glib.h>
1c6fa20f 28
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29#ifdef __cplusplus
30extern "C" {
31#endif
32
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33struct srd_session;
34
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35/**
36 * @file
37 *
38 * The public libsigrokdecode header file to be used by frontends.
39 *
40 * This is the only file that libsigrokdecode users (frontends) are supposed
41 * to use and include. There are other header files which get installed with
42 * libsigrokdecode, but those are not meant to be used directly by frontends.
43 *
44 * The correct way to get/use the libsigrokdecode API functions is:
45 *
46 * @code{.c}
c1f86f02 47 * #include <libsigrokdecode/libsigrokdecode.h>
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48 * @endcode
49 */
50
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51/*
52 * Package version macros (can be used for conditional compilation).
53 */
54
55/** The libsigrokdecode package 'major' version number. */
14b42dad 56#define SRD_PACKAGE_VERSION_MAJOR @SRD_PACKAGE_VERSION_MAJOR@
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57
58/** The libsigrokdecode package 'minor' version number. */
14b42dad 59#define SRD_PACKAGE_VERSION_MINOR @SRD_PACKAGE_VERSION_MINOR@
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60
61/** The libsigrokdecode package 'micro' version number. */
14b42dad 62#define SRD_PACKAGE_VERSION_MICRO @SRD_PACKAGE_VERSION_MICRO@
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63
64/** The libsigrokdecode package version ("major.minor.micro") as string. */
14b42dad 65#define SRD_PACKAGE_VERSION_STRING "@SRD_PACKAGE_VERSION@"
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66
67/*
68 * Library/libtool version macros (can be used for conditional compilation).
69 */
70
71/** The libsigrokdecode libtool 'current' version number. */
14b42dad 72#define SRD_LIB_VERSION_CURRENT @SRD_LIB_VERSION_CURRENT@
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73
74/** The libsigrokdecode libtool 'revision' version number. */
14b42dad 75#define SRD_LIB_VERSION_REVISION @SRD_LIB_VERSION_REVISION@
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76
77/** The libsigrokdecode libtool 'age' version number. */
14b42dad 78#define SRD_LIB_VERSION_AGE @SRD_LIB_VERSION_AGE@
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79
80/** The libsigrokdecode libtool version ("current:revision:age") as string. */
14b42dad 81#define SRD_LIB_VERSION_STRING "@SRD_LIB_VERSION@"
03a66522 82
a4898be7 83/*
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84 * All possible return codes of libsigrokdecode functions must be listed here.
85 * Functions should never return hardcoded numbers as status, but rather
47dfa77d 86 * use these enum values. All error codes are negative numbers.
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87 *
88 * The error codes are globally unique in libsigrokdecode, i.e. if one of the
89 * libsigrokdecode functions returns a "malloc error" it must be exactly the
90 * same return value as used by all other functions to indicate "malloc error".
91 * There must be no functions which indicate two different errors via the
92 * same return code.
93 *
94 * Also, for compatibility reasons, no defined return codes are ever removed
47dfa77d 95 * or reused for different errors later. You can only add new entries and
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96 * return codes, but never remove or redefine existing ones.
97 */
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98
99/** Status/error codes returned by libsigrokdecode functions. */
100enum {
101 SRD_OK = 0, /**< No error */
102 SRD_ERR = -1, /**< Generic/unspecified error */
103 SRD_ERR_MALLOC = -2, /**< Malloc/calloc/realloc error */
104 SRD_ERR_ARG = -3, /**< Function argument error */
105 SRD_ERR_BUG = -4, /**< Errors hinting at internal bugs */
106 SRD_ERR_PYTHON = -5, /**< Python C API error */
107 SRD_ERR_DECODERS_DIR = -6, /**< Protocol decoder path invalid */
108
109 /*
110 * Note: When adding entries here, don't forget to also update the
111 * srd_strerror() and srd_strerror_name() functions in error.c.
112 */
113};
7c24d086 114
43c0a640 115/* libsigrokdecode loglevels. */
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116enum {
117 SRD_LOG_NONE = 0, /**< Output no messages at all. */
118 SRD_LOG_ERR = 1, /**< Output error messages. */
119 SRD_LOG_WARN = 2, /**< Output warnings. */
120 SRD_LOG_INFO = 3, /**< Output informational messages. */
121 SRD_LOG_DBG = 4, /**< Output debug messages. */
122 SRD_LOG_SPEW = 5, /**< Output very noisy debug messages. */
123};
43c0a640 124
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125/*
126 * Use SRD_API to mark public API symbols, and SRD_PRIV for private symbols.
127 *
128 * Variables and functions marked 'static' are private already and don't
d523eae6 129 * need SRD_PRIV. However, functions which are not static (because they need
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130 * to be used in other libsigrokdecode-internal files) but are also not
131 * meant to be part of the public libsigrokdecode API, must use SRD_PRIV.
132 *
133 * This uses the 'visibility' feature of gcc (requires gcc >= 4.0).
134 *
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135 * This feature is not available on MinGW/Windows, as it is a feature of
136 * ELF files and MinGW/Windows uses PE files.
137 *
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138 * Details: http://gcc.gnu.org/wiki/Visibility
139 */
140
141/* Marks public libsigrokdecode API symbols. */
a4cb05f7 142#ifndef _WIN32
55c3c5f4 143#define SRD_API __attribute__((visibility("default")))
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144#else
145#define SRD_API
146#endif
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147
148/* Marks private, non-public libsigrokdecode symbols (not part of the API). */
a4cb05f7 149#ifndef _WIN32
55c3c5f4 150#define SRD_PRIV __attribute__((visibility("hidden")))
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151#else
152#define SRD_PRIV
153#endif
55c3c5f4 154
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155/*
156 * When adding an output type, don't forget to...
157 * - expose it to PDs in controller.c:PyInit_sigrokdecode()
158 * - add a check in module_sigrokdecode.c:Decoder_put()
159 * - add a debug string in type_decoder.c:OUTPUT_TYPES
160 */
e5080882 161enum {
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162 SRD_OUTPUT_ANN,
163 SRD_OUTPUT_PROTO,
15969949 164 SRD_OUTPUT_BINARY,
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165};
166
a61ece20 167#define SRD_MAX_NUM_PROBES 64
bc5f5a43 168
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169enum {
170 SRD_CONF_NUM_PROBES = 10000,
171 SRD_CONF_UNITSIZE,
172 SRD_CONF_SAMPLERATE,
173};
174
d752b12b 175struct srd_decoder {
775dda7a 176 /** The decoder ID. Must be non-NULL and unique for all decoders. */
31b82285 177 char *id;
775dda7a 178
361fdcaa 179 /** The (short) decoder name. Must be non-NULL. */
31b82285 180 char *name;
775dda7a 181
122e9a90 182 /** The (long) decoder name. Must be non-NULL. */
75a282e5 183 char *longname;
775dda7a 184
361fdcaa 185 /** A (short, one-line) description of the decoder. Must be non-NULL. */
5c55017c 186 char *desc;
775dda7a 187
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188 /**
189 * The license of the decoder. Valid values: "gplv2+", "gplv3+".
190 * Other values are currently not allowed. Must be non-NULL.
191 */
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192 char *license;
193
361fdcaa 194 /** List of probes required by this decoder. */
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195 GSList *probes;
196
361fdcaa 197 /** List of optional probes for this decoder. */
dcdf4883 198 GSList *opt_probes;
f38ec285 199
361fdcaa 200 /**
c9bfccc6 201 * List of NULL-terminated char[], containing descriptions of the
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202 * supported annotation output.
203 */
e97b6ef5 204 GSList *annotations;
15969949 205
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206 /** List of decoder options. */
207 GSList *options;
208
361fdcaa 209 /** Python module. */
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210 PyObject *py_mod;
211
361fdcaa 212 /** sigrokdecode.Decoder class. */
451680f1 213 PyObject *py_dec;
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214};
215
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216/**
217 * Structure which contains information about one protocol decoder probe.
218 * For example, I2C has two probes, SDA and SCL.
219 */
f38ec285 220struct srd_probe {
361fdcaa 221 /** The ID of the probe. Must be non-NULL. */
f38ec285 222 char *id;
361fdcaa 223 /** The name of the probe. Must not be NULL. */
f38ec285 224 char *name;
361fdcaa 225 /** The description of the probe. Must not be NULL. */
f38ec285 226 char *desc;
361fdcaa 227 /** The index of the probe, i.e. its order in the list of probes. */
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228 int order;
229};
230
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231struct srd_decoder_option {
232 char *id;
233 char *desc;
234 GVariant *def;
235};
236
a8b72b05 237struct srd_decoder_inst {
b2c19614 238 struct srd_decoder *decoder;
32cfb920 239 struct srd_session *sess;
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240 PyObject *py_inst;
241 char *inst_id;
b2c19614 242 GSList *pd_output;
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243 int dec_num_probes;
244 int *dec_probemap;
245 int data_num_probes;
246 int data_unitsize;
247 uint64_t data_samplerate;
7ce7775c 248 GSList *next_di;
31b82285 249};
250
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251struct srd_pd_output {
252 int pdo_id;
253 int output_type;
a8b72b05 254 struct srd_decoder_inst *di;
94d43b37 255 char *proto_id;
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256};
257
94d43b37 258struct srd_proto_data {
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259 uint64_t start_sample;
260 uint64_t end_sample;
261 struct srd_pd_output *pdo;
94d43b37 262 int ann_format;
983cb0f5 263 void *data;
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264};
265
ae53d0a5 266typedef void (*srd_pd_output_callback_t)(struct srd_proto_data *pdata,
41a5d962 267 void *cb_data);
ae53d0a5 268
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269struct srd_pd_callback {
270 int output_type;
4c1d0670 271 srd_pd_output_callback_t cb;
41a5d962 272 void *cb_data;
983cb0f5 273};
bc5f5a43 274
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275/* Custom Python types: */
276
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277typedef struct {
278 PyObject_HEAD
279} srd_Decoder;
43c0a640 280
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281typedef struct {
282 PyObject_HEAD
a8b72b05 283 struct srd_decoder_inst *di;
86528298 284 uint64_t start_samplenum;
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285 unsigned int itercnt;
286 uint8_t *inbuf;
287 uint64_t inbuflen;
288 PyObject *sample;
289} srd_logic;
290
f8e45857 291/*--- controller.c ----------------------------------------------------------*/
c9bfccc6 292
abeeed8b 293SRD_API int srd_init(const char *path);
55c3c5f4 294SRD_API int srd_exit(void);
b33b8aa5 295SRD_API int srd_inst_option_set(struct srd_decoder_inst *di,
0ff2d191 296 GHashTable *options);
b33b8aa5 297SRD_API int srd_inst_probe_set_all(struct srd_decoder_inst *di,
0ff2d191 298 GHashTable *probes);
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299SRD_API struct srd_decoder_inst *srd_inst_new(struct srd_session *sess,
300 const char *id, GHashTable *options);
301SRD_API int srd_inst_stack(struct srd_session *sess,
302 struct srd_decoder_inst *di_from, struct srd_decoder_inst *di_to);
303SRD_API struct srd_decoder_inst *srd_inst_find_by_id(struct srd_session *sess,
304 const char *inst_id);
305SRD_API int srd_session_new(struct srd_session **sess);
306SRD_API int srd_session_start(struct srd_session *sess);
307SRD_API int srd_session_config_set(struct srd_session *sess, int key,
308 GVariant *data);
309SRD_API int srd_session_send(struct srd_session *sess,
310 uint64_t start_samplenum, const uint8_t *inbuf, uint64_t inbuflen);
311SRD_API int srd_session_destroy(struct srd_session *sess);
312SRD_API int srd_pd_output_callback_add(struct srd_session *sess,
313 int output_type, srd_pd_output_callback_t cb, void *cb_data);
b2c19614 314
43c0a640 315/*--- decoder.c -------------------------------------------------------------*/
c9bfccc6 316
38ff5046 317SRD_API const GSList *srd_decoder_list(void);
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318SRD_API struct srd_decoder *srd_decoder_get_by_id(const char *id);
319SRD_API int srd_decoder_load(const char *name);
320SRD_API int srd_decoder_unload(struct srd_decoder *dec);
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321SRD_API int srd_decoder_load_all(void);
322SRD_API int srd_decoder_unload_all(void);
b33b8aa5 323SRD_API char *srd_decoder_doc_get(const struct srd_decoder *dec);
b2c19614 324
43c0a640 325/*--- log.c -----------------------------------------------------------------*/
c9bfccc6 326
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327typedef int (*srd_log_callback_t)(void *cb_data, int loglevel,
328 const char *format, va_list args);
c9bfccc6 329
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330SRD_API int srd_log_loglevel_set(int loglevel);
331SRD_API int srd_log_loglevel_get(void);
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332SRD_API int srd_log_callback_set(srd_log_callback_t cb, void *cb_data);
333SRD_API int srd_log_callback_set_default(void);
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334SRD_API int srd_log_logdomain_set(const char *logdomain);
335SRD_API char *srd_log_logdomain_get(void);
1c6fa20f 336
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337/*--- version.c -------------------------------------------------------------*/
338
339SRD_API int srd_package_version_major_get(void);
340SRD_API int srd_package_version_minor_get(void);
341SRD_API int srd_package_version_micro_get(void);
342SRD_API const char *srd_package_version_string_get(void);
343
344SRD_API int srd_lib_version_current_get(void);
345SRD_API int srd_lib_version_revision_get(void);
346SRD_API int srd_lib_version_age_get(void);
347SRD_API const char *srd_lib_version_string_get(void);
348
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349/*--- error.c ---------------------------------------------------------------*/
350
351SRD_API const char *srd_strerror(int error_code);
352SRD_API const char *srd_strerror_name(int error_code);
353
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354#ifdef __cplusplus
355}
356#endif
357
1c6fa20f 358#endif