[libsigrokdecode.git] / sigrokdecode.h

/*
 * 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 SIGROKDECODE_SIGROKDECODE_H
#define SIGROKDECODE_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. */

enum {
	SRD_OUTPUT_ANN,
	SRD_OUTPUT_PROTO,
	SRD_OUTPUT_BINARY,
	/* When adding an output type, don't forget to expose it to PDs in:
	 *     controller.c:PyInit_sigrokdecode()
	 * and add a check in:
	 *     module_sigrokdecode.c:Decoder_put()
	 */
};

#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;

	/** A (long, multi-line) description of the decoder. May be NULL. */
	char *longdesc;

	/** The author of the decoder. May be NULL. */
	char *author;

	/** The license of the decoder. Valid values: "gplv2+", "gplv3+". */
	char *license;

	/** TODO */
	char *func;

	/** TODO */
	GSList *inputformats;

	/** TODO */
	GSList *outputformats;

	/* List of NULL-terminated char[], containing descriptions of the
	 * supported annotation output.
	 */
	GSList *annotations;

	/** TODO */
	PyObject *py_mod;

	/** Python object that performs the decoding */
	PyObject *py_decobj;
};

struct srd_decoder_instance {
	struct srd_decoder *decoder;
	PyObject *py_instance;
	char *instance_id;
	GSList *pd_output;
	int num_probes;
	int unitsize;
	uint64_t samplerate;
	GSList *next_di;
};

struct srd_pd_output {
	int pdo_id;
	int output_type;
	struct srd_decoder *decoder;
	char *proto_id;
};

typedef struct {
	PyObject_HEAD
	struct srd_decoder_instance *di;
	unsigned int itercnt;
	uint8_t *inbuf;
	uint64_t inbuflen;
	PyObject *sample;
} srd_logic;

struct srd_proto_data {
	uint64_t start_sample;
	uint64_t end_sample;
	struct srd_pd_output *pdo;
	int ann_format;
	void *data;
};

struct srd_pd_callback {
	int output_type;
	void (*callback)(struct srd_proto_data *);
};


/*--- controller.c ----------------------------------------------------------*/

int srd_init(void);
int srd_exit(void);
int set_modulepath(void);
struct srd_decoder_instance *srd_instance_new(const char *id,
		const char *instance_id);
int srd_instance_stack(struct srd_decoder_instance *di_from,
		struct srd_decoder_instance *di_to);
int srd_instance_set_probe(struct srd_decoder_instance *di,
				const char *probename, int num);
struct srd_decoder_instance *srd_instance_find(char *instance_id);
int srd_instance_start(struct srd_decoder_instance *di, PyObject *args);
int srd_instance_decode(uint64_t timeoffset, uint64_t duration,
		struct srd_decoder_instance *dec, uint8_t *inbuf, uint64_t inbuflen);
int srd_session_start(int num_probes, int unitsize, uint64_t samplerate);
int srd_session_feed(uint64_t timeoffset, uint64_t duration, uint8_t *inbuf,
		uint64_t inbuflen);
int pd_add(struct srd_decoder_instance *di, int output_type,
		char *output_id);
struct srd_decoder_instance *get_di_by_decobject(void *decobject);
int srd_register_callback(int output_type, void *cb);
void *srd_find_callback(int output_type);

/*--- decoder.c -------------------------------------------------------------*/

GSList *srd_list_decoders(void);
struct srd_decoder *srd_get_decoder_by_id(const char *id);
int srd_load_decoder(const char *name, struct srd_decoder **dec);
int srd_unload_decoder(struct srd_decoder *dec);
int srd_load_all_decoders(void);
int srd_unload_all_decoders(void);

/*--- util.c ----------------------------------------------------------------*/
int h_str(PyObject *py_res, const char *key, char **outstr);
int py_strlist_to_char(PyObject *py_strlist, char ***outstr);

/*--- log.c -----------------------------------------------------------------*/

int srd_set_loglevel(int loglevel);
int srd_get_loglevel(void);

#ifdef __cplusplus
}
#endif

#endif
Commit	Line	Data
	1	/*
	2	* This file is part of the sigrok project.
	3	*
	4	* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
	5	* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
	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
	22	#ifndef SIGROKDECODE_SIGROKDECODE_H
	23	#define SIGROKDECODE_SIGROKDECODE_H
	24
	25	#include <Python.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
	26	#include <stdint.h>
	27	#include <glib.h>
	28
	29	#ifdef __cplusplus
	30	extern "C" {
	31	#endif
	32
	33	/*
	34	* Status/error codes returned by libsigrokdecode functions.
	35	*
	36	* All possible return codes of libsigrokdecode functions must be listed here.
	37	* Functions should never return hardcoded numbers as status, but rather
	38	* use these #defines instead. All error codes are negative numbers.
	39	*
	40	* The error codes are globally unique in libsigrokdecode, i.e. if one of the
	41	* libsigrokdecode functions returns a "malloc error" it must be exactly the
	42	* same return value as used by all other functions to indicate "malloc error".
	43	* There must be no functions which indicate two different errors via the
	44	* same return code.
	45	*
	46	* Also, for compatibility reasons, no defined return codes are ever removed
	47	* or reused for different #defines later. You can only add new #defines and
	48	* return codes, but never remove or redefine existing ones.
	49	*/
	50	#define SRD_OK 0 /*< No error /
	51	#define SRD_ERR -1 /*< Generic/unspecified error /
	52	#define SRD_ERR_MALLOC -2 /*< Malloc/calloc/realloc error /
	53	#define SRD_ERR_ARG -3 /*< Function argument error /
	54	#define SRD_ERR_BUG -4 /*< Errors hinting at internal bugs /
	55	#define SRD_ERR_PYTHON -5 /*< Python C API error /
	56	#define SRD_ERR_DECODERS_DIR -6 /*< Protocol decoder path invalid /
	57
	58	/* libsigrokdecode loglevels. */
	59	#define SRD_LOG_NONE 0 /*< Output no messages at all. /
	60	#define SRD_LOG_ERR 1 /*< Output error messages. /
	61	#define SRD_LOG_WARN 2 /*< Output warnings. /
	62	#define SRD_LOG_INFO 3 /*< Output informational messages. /
	63	#define SRD_LOG_DBG 4 /*< Output debug messages. /
	64	#define SRD_LOG_SPEW 5 /*< Output very noisy debug messages. /
	65
	66	enum {
	67	SRD_OUTPUT_ANN,
	68	SRD_OUTPUT_PROTO,
	69	SRD_OUTPUT_BINARY,
	70	/* When adding an output type, don't forget to expose it to PDs in:
	71	* controller.c:PyInit_sigrokdecode()
	72	* and add a check in:
	73	* module_sigrokdecode.c:Decoder_put()
	74	*/
	75	};
	76
	77	#define SRD_MAX_NUM_PROBES 64
	78
	79	/* TODO: Documentation. */
	80	struct srd_decoder {
	81	/** The decoder ID. Must be non-NULL and unique for all decoders. */
	82	char *id;
	83
	84	/** The (short) decoder name. */
	85	char *name;
	86
	87	/** The (long) decoder name. May be NULL. */
	88	char *longname;
	89
	90	/** A (short, one-line) description of the decoder. */
	91	char *desc;
	92
	93	/** A (long, multi-line) description of the decoder. May be NULL. */
	94	char *longdesc;
	95
	96	/** The author of the decoder. May be NULL. */
	97	char *author;
	98
	99	/** The license of the decoder. Valid values: "gplv2+", "gplv3+". */
	100	char *license;
	101
	102	/** TODO */
	103	char *func;
	104
	105	/** TODO */
	106	GSList *inputformats;
	107
	108	/** TODO */
	109	GSList *outputformats;
	110
	111	/* List of NULL-terminated char[], containing descriptions of the
	112	* supported annotation output.
	113	*/
	114	GSList *annotations;
	115
	116	/** TODO */
	117	PyObject *py_mod;
	118
	119	/** Python object that performs the decoding */
	120	PyObject *py_decobj;
	121	};
	122
	123	struct srd_decoder_instance {
	124	struct srd_decoder *decoder;
	125	PyObject *py_instance;
	126	char *instance_id;
	127	GSList *pd_output;
	128	int num_probes;
	129	int unitsize;
	130	uint64_t samplerate;
	131	GSList *next_di;
	132	};
	133
	134	struct srd_pd_output {
	135	int pdo_id;
	136	int output_type;
	137	struct srd_decoder *decoder;
	138	char *proto_id;
	139	};
	140
	141	typedef struct {
	142	PyObject_HEAD
	143	struct srd_decoder_instance *di;
	144	unsigned int itercnt;
	145	uint8_t *inbuf;
	146	uint64_t inbuflen;
	147	PyObject *sample;
	148	} srd_logic;
	149
	150	struct srd_proto_data {
	151	uint64_t start_sample;
	152	uint64_t end_sample;
	153	struct srd_pd_output *pdo;
	154	int ann_format;
	155	void *data;
	156	};
	157
	158	struct srd_pd_callback {
	159	int output_type;
	160	void (callback)(struct srd_proto_data );
	161	};
	162
	163
	164	/--- controller.c ----------------------------------------------------------/
	165
	166	int srd_init(void);
	167	int srd_exit(void);
	168	int set_modulepath(void);
	169	struct srd_decoder_instance srd_instance_new(const char id,
	170	const char *instance_id);
	171	int srd_instance_stack(struct srd_decoder_instance *di_from,
	172	struct srd_decoder_instance *di_to);
	173	int srd_instance_set_probe(struct srd_decoder_instance *di,
	174	const char *probename, int num);
	175	struct srd_decoder_instance srd_instance_find(char instance_id);
	176	int srd_instance_start(struct srd_decoder_instance di, PyObject args);
	177	int srd_instance_decode(uint64_t timeoffset, uint64_t duration,
	178	struct srd_decoder_instance dec, uint8_t inbuf, uint64_t inbuflen);
	179	int srd_session_start(int num_probes, int unitsize, uint64_t samplerate);
	180	int srd_session_feed(uint64_t timeoffset, uint64_t duration, uint8_t *inbuf,
	181	uint64_t inbuflen);
	182	int pd_add(struct srd_decoder_instance *di, int output_type,
	183	char *output_id);
	184	struct srd_decoder_instance get_di_by_decobject(void decobject);
	185	int srd_register_callback(int output_type, void *cb);
	186	void *srd_find_callback(int output_type);
	187
	188	/--- decoder.c -------------------------------------------------------------/
	189
	190	GSList *srd_list_decoders(void);
	191	struct srd_decoder srd_get_decoder_by_id(const char id);
	192	int srd_load_decoder(const char name, struct srd_decoder *dec);
	193	int srd_unload_decoder(struct srd_decoder *dec);
	194	int srd_load_all_decoders(void);
	195	int srd_unload_all_decoders(void);
	196
	197	/--- util.c ----------------------------------------------------------------/
	198	int h_str(PyObject py_res, const char key, char **outstr);
	199	int py_strlist_to_char(PyObject py_strlist, char **outstr);
	200
	201	/--- log.c -----------------------------------------------------------------/
	202
	203	int srd_set_loglevel(int loglevel);
	204	int srd_get_loglevel(void);
	205
	206	#ifdef __cplusplus
	207	}
	208	#endif
	209
	210	#endif