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Diffstat (limited to 'sigrokdecode.h.in')
| -rw-r--r-- | sigrokdecode.h.in | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/sigrokdecode.h.in b/sigrokdecode.h.in new file mode 100644 index 0000000..ded00bf --- /dev/null +++ b/sigrokdecode.h.in @@ -0,0 +1,252 @@ +/* + * This file is part of the sigrok project. + * + * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> + * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef LIBSIGROKDECODE_SIGROKDECODE_H +#define LIBSIGROKDECODE_SIGROKDECODE_H + +#include <Python.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */ +#include <stdint.h> +#include <glib.h> + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Status/error codes returned by libsigrokdecode functions. + * + * All possible return codes of libsigrokdecode functions must be listed here. + * Functions should never return hardcoded numbers as status, but rather + * use these #defines instead. All error codes are negative numbers. + * + * The error codes are globally unique in libsigrokdecode, i.e. if one of the + * libsigrokdecode functions returns a "malloc error" it must be exactly the + * same return value as used by all other functions to indicate "malloc error". + * There must be no functions which indicate two different errors via the + * same return code. + * + * Also, for compatibility reasons, no defined return codes are ever removed + * or reused for different #defines later. You can only add new #defines and + * return codes, but never remove or redefine existing ones. + */ +#define SRD_OK 0 /**< No error */ +#define SRD_ERR -1 /**< Generic/unspecified error */ +#define SRD_ERR_MALLOC -2 /**< Malloc/calloc/realloc error */ +#define SRD_ERR_ARG -3 /**< Function argument error */ +#define SRD_ERR_BUG -4 /**< Errors hinting at internal bugs */ +#define SRD_ERR_PYTHON -5 /**< Python C API error */ +#define SRD_ERR_DECODERS_DIR -6 /**< Protocol decoder path invalid */ + +/* libsigrokdecode loglevels. */ +#define SRD_LOG_NONE 0 /**< Output no messages at all. */ +#define SRD_LOG_ERR 1 /**< Output error messages. */ +#define SRD_LOG_WARN 2 /**< Output warnings. */ +#define SRD_LOG_INFO 3 /**< Output informational messages. */ +#define SRD_LOG_DBG 4 /**< Output debug messages. */ +#define SRD_LOG_SPEW 5 /**< Output very noisy debug messages. */ + +/* + * Use SRD_API to mark public API symbols, and SRD_PRIV for private symbols. + * + * Variables and functions marked 'static' are private already and don't + * need SR_PRIV. However, functions which are not static (because they need + * to be used in other libsigrokdecode-internal files) but are also not + * meant to be part of the public libsigrokdecode API, must use SRD_PRIV. + * + * This uses the 'visibility' feature of gcc (requires gcc >= 4.0). + * + * Details: http://gcc.gnu.org/wiki/Visibility + */ + +/* Marks public libsigrokdecode API symbols. */ +#define SRD_API __attribute__((visibility("default"))) + +/* Marks private, non-public libsigrokdecode symbols (not part of the API). */ +#define SRD_PRIV __attribute__((visibility("hidden"))) + +/* + * When adding an output type, don't forget to... + * - expose it to PDs in controller.c:PyInit_sigrokdecode() + * - add a check in module_sigrokdecode.c:Decoder_put() + * - add a debug string in type_decoder.c:OUTPUT_TYPES + */ +enum { + SRD_OUTPUT_ANN, + SRD_OUTPUT_PROTO, + SRD_OUTPUT_BINARY, +}; + +#define SRD_MAX_NUM_PROBES 64 + +/* TODO: Documentation. */ +struct srd_decoder { + /** The decoder ID. Must be non-NULL and unique for all decoders. */ + char *id; + + /** The (short) decoder name. Must be non-NULL. */ + char *name; + + /** The (long) decoder name. May be NULL. */ + char *longname; + + /** A (short, one-line) description of the decoder. Must be non-NULL. */ + char *desc; + + /** + * The license of the decoder. Valid values: "gplv2+", "gplv3+". + * Other values are currently not allowed. Must be non-NULL. + */ + char *license; + + /** List of probes required by this decoder. */ + GSList *probes; + + /** List of optional probes for this decoder. */ + GSList *opt_probes; + + /** + * List of NULL-terminated char[], containing descriptions of the + * supported annotation output. + */ + GSList *annotations; + + /** Python module. */ + PyObject *py_mod; + + /** sigrokdecode.Decoder class. */ + PyObject *py_dec; +}; + +/** + * Structure which contains information about one protocol decoder probe. + * For example, I2C has two probes, SDA and SCL. + */ +struct srd_probe { + /** The ID of the probe. Must be non-NULL. */ + char *id; + /** The name of the probe. Must not be NULL. */ + char *name; + /** The description of the probe. Must not be NULL. */ + char *desc; + /** The index of the probe, i.e. its order in the list of probes. */ + int order; +}; + +struct srd_decoder_inst { + struct srd_decoder *decoder; + PyObject *py_inst; + char *inst_id; + GSList *pd_output; + int dec_num_probes; + int *dec_probemap; + int data_num_probes; + int data_unitsize; + uint64_t data_samplerate; + GSList *next_di; +}; + +struct srd_pd_output { + int pdo_id; + int output_type; + struct srd_decoder_inst *di; + char *proto_id; +}; + +struct srd_proto_data { + uint64_t start_sample; + uint64_t end_sample; + struct srd_pd_output *pdo; + int ann_format; + void *data; +}; + +typedef void (*srd_pd_output_callback_t)(struct srd_proto_data *pdata, + void *cb_data); + +struct srd_pd_callback { + int output_type; + srd_pd_output_callback_t cb; + void *cb_data; +}; + +/* Custom Python types: */ + +typedef struct { + PyObject_HEAD +} srd_Decoder; + +typedef struct { + PyObject_HEAD + struct srd_decoder_inst *di; + uint64_t start_samplenum; + unsigned int itercnt; + uint8_t *inbuf; + uint64_t inbuflen; + PyObject *sample; +} srd_logic; + +/*--- controller.c ----------------------------------------------------------*/ + +SRD_API int srd_init(const char *path); +SRD_API int srd_exit(void); +SRD_API int srd_inst_options_set(struct srd_decoder_inst *di, + GHashTable *options); +SRD_API int srd_inst_probes_set(struct srd_decoder_inst *di, + GHashTable *probes); +SRD_API struct srd_decoder_inst *srd_inst_new(const char *id, + GHashTable *options); +SRD_API int srd_inst_stack(struct srd_decoder_inst *di_from, + struct srd_decoder_inst *di_to); +SRD_API struct srd_decoder_inst *srd_inst_find_by_id(const char *inst_id); +SRD_API int srd_session_start(int num_probes, int unitsize, + uint64_t samplerate); +SRD_API int srd_session_send(uint64_t start_samplenum, const uint8_t *inbuf, + uint64_t inbuflen); +SRD_API int srd_register_callback(int output_type, + srd_pd_output_callback_t cb, void *cb_data); + +/*--- decoder.c -------------------------------------------------------------*/ + +SRD_API GSList *srd_decoder_list(void); +SRD_API struct srd_decoder *srd_decoder_get_by_id(const char *id); +SRD_API int srd_decoder_load(const char *name); +SRD_API int srd_decoder_unload(struct srd_decoder *dec); +SRD_API int srd_decoder_load_all(void); +SRD_API int srd_decoder_unload_all(void); +SRD_API char *srd_decoder_doc(const struct srd_decoder *dec); + +/*--- log.c -----------------------------------------------------------------*/ + +typedef int (*srd_log_callback_t)(void *cb_data, int loglevel, + const char *format, va_list args); + +SRD_API int srd_log_loglevel_set(int loglevel); +SRD_API int srd_log_loglevel_get(void); +SRD_API int srd_log_callback_set(srd_log_callback_t cb, void *cb_data); +SRD_API int srd_log_callback_set_default(void); +SRD_API int srd_log_logdomain_set(const char *logdomain); +SRD_API char *srd_log_logdomain_get(void); + +#ifdef __cplusplus +} +#endif + +#endif |