X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=blobdiff_plain;f=sigrokdecode.h;h=0558a4f51fd63776dc472a6ee5dab4797bec1c9f;hp=7805d8545de86cdf60bd99c28a9391592f1b14ee;hb=ee4ed2279e3d3d4b2911aa2a1ed4effcbd1bbe60;hpb=1c6fa20f549c0565ce4fae6ddf7d5eb60db2ddea diff --git a/sigrokdecode.h b/sigrokdecode.h index 7805d85..0558a4f 100644 --- a/sigrokdecode.h +++ b/sigrokdecode.h @@ -2,6 +2,7 @@ * This file is part of the sigrok project. * * Copyright (C) 2010 Uwe Hermann + * Copyright (C) 2012 Bert Vermeulen * * 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 @@ -23,12 +24,232 @@ #include /* First, so we avoid a _POSIX_C_SOURCE warning. */ #include +#include -int sigrokdecode_init(void); -int sigrokdecode_load_decoder_file(const char *name); -int sigrokdecode_run_decoder(const char *decodername, uint8_t *inbuf, - uint64_t inbuflen, uint8_t **outbuf, - uint64_t *outbuflen); -int sigrokdecode_shutdown(void); +#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. */ + char *name; + + /** The (long) decoder name. May be NULL. */ + char *longname; + + /** A (short, one-line) description of the decoder. */ + char *desc; + + /** The license of the decoder. Valid values: "gplv2+", "gplv3+". */ + char *license; + + /** TODO */ + GSList *inputformats; + + /** TODO */ + GSList *outputformats; + + /** Probes */ + GSList *probes; + + /** Optional probes */ + 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; +}; + +struct srd_probe { + char *id; + char *name; + char *desc; + 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 *user_data); + +struct srd_pd_callback { + int output_type; + srd_pd_output_callback_t callback; + void *user_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(char *path); +SRD_API int srd_exit(void); +SRD_PRIV int add_modulepath(const char *path); +SRD_API int srd_inst_set_options(struct srd_decoder_inst *di, + GHashTable *options); +SRD_API int srd_inst_set_probes(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(char *inst_id); +SRD_PRIV int srd_inst_start(struct srd_decoder_inst *di, PyObject *args); +SRD_API int srd_inst_decode(uint64_t start_samplenum, + struct srd_decoder_inst *dec, + uint8_t *inbuf, uint64_t inbuflen); +SRD_API void srd_inst_free(struct srd_decoder_inst *di); +SRD_API void srd_inst_free_all(GSList *stack); +SRD_API int srd_session_start(int num_probes, int unitsize, + uint64_t samplerate); +SRD_API int srd_session_feed(uint64_t start_samplenum, uint8_t *inbuf, + uint64_t inbuflen); +SRD_API struct srd_decoder_inst *get_di_by_decobject(void *decobject); +SRD_API int srd_register_callback(int output_type, + srd_pd_output_callback_t cb, void *user_data); +SRD_API void *srd_find_callback(int output_type); + +/*--- decoder.c -------------------------------------------------------------*/ + +SRD_API GSList *srd_list_decoders(void); +SRD_API struct srd_decoder *srd_get_decoder_by_id(const char *id); +SRD_API int srd_load_decoder(const char *name, struct srd_decoder **dec); +SRD_API int srd_unload_decoder(struct srd_decoder *dec); +SRD_API int srd_load_all_decoders(void); +SRD_API int srd_unload_all_decoders(void); +SRD_API char *srd_decoder_doc(struct srd_decoder *dec); + +/*--- log.c -----------------------------------------------------------------*/ + +typedef int (*srd_log_handler_t)(void *user_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_handler_set(srd_log_handler_t handler, void *user_data); +SRD_API int srd_log_handler_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