[libsigrok.git] / libsigrok.h

/*
 * This file is part of the sigrok project.
 *
 * Copyright (C) 2010-2012 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 3 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef LIBSIGROK_SIGROK_H
#define LIBSIGROK_SIGROK_H

#include <stdio.h>
#include <sys/time.h>
#include <stdint.h>
#include <inttypes.h>
#include <glib.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Status/error codes returned by libsigrok functions.
 *
 * All possible return codes of libsigrok 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 libsigrok, i.e. if one of the
 * libsigrok 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 SR_OK                 0 /* No error */
#define SR_ERR               -1 /* Generic/unspecified error */
#define SR_ERR_MALLOC        -2 /* Malloc/calloc/realloc error */
#define SR_ERR_ARG           -3 /* Function argument error */
#define SR_ERR_BUG           -4 /* Errors hinting at internal bugs */
#define SR_ERR_SAMPLERATE    -5 /* Incorrect samplerate */

#define SR_MAX_NUM_PROBES    64 /* Limited by uint64_t. */
#define SR_MAX_PROBENAME_LEN 32

/* Handy little macros */
#define SR_HZ(n)  (n)
#define SR_KHZ(n) ((n) * 1000)
#define SR_MHZ(n) ((n) * 1000000)
#define SR_GHZ(n) ((n) * 1000000000)

#define SR_HZ_TO_NS(n) (1000000000 / (n))

/* libsigrok loglevels. */
#define SR_LOG_NONE           0 /**< Output no messages at all. */
#define SR_LOG_ERR            1 /**< Output error messages. */
#define SR_LOG_WARN           2 /**< Output warnings. */
#define SR_LOG_INFO           3 /**< Output informational messages. */
#define SR_LOG_DBG            4 /**< Output debug messages. */
#define SR_LOG_SPEW           5 /**< Output very noisy debug messages. */

/*
 * Use SR_API to mark public API symbols, and SR_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 libsigrok-internal files) but are also not meant to
 * be part of the public libsigrok API, must use SR_PRIV.
 *
 * This uses the 'visibility' feature of gcc (requires gcc >= 4.0).
 *
 * This feature is not available on MinGW/Windows, as it is a feature of
 * ELF files and MinGW/Windows uses PE files.
 *
 * Details: http://gcc.gnu.org/wiki/Visibility
 */

/* Marks public libsigrok API symbols. */
#ifndef _WIN32
#define SR_API __attribute__((visibility("default")))
#else
#define SR_API
#endif

/* Marks private, non-public libsigrok symbols (not part of the API). */
#ifndef _WIN32
#define SR_PRIV __attribute__((visibility("hidden")))
#else
#define SR_PRIV
#endif

typedef int (*sr_receive_data_callback_t)(int fd, int revents, void *cb_data);

/* Data types used by hardware drivers for dev_config_set() */
enum {
	SR_T_UINT64,
	SR_T_CHAR,
	SR_T_BOOL,
	SR_T_FLOAT,
	SR_T_RATIONAL_PERIOD,
	SR_T_RATIONAL_VOLT,
	SR_T_KEYVALUE,
};

struct sr_rational {
	/* numerator */
	uint64_t p;
	/* denominator */
	uint64_t q;
};

/* sr_datafeed_packet.type values */
enum {
	SR_DF_HEADER,
	SR_DF_END,
	SR_DF_TRIGGER,
	SR_DF_LOGIC,
	SR_DF_META_LOGIC,
	SR_DF_ANALOG,
	SR_DF_META_ANALOG,
	SR_DF_FRAME_BEGIN,
	SR_DF_FRAME_END,
};

/* sr_datafeed_analog.mq values */
enum {
	SR_MQ_VOLTAGE,
	SR_MQ_CURRENT,
	SR_MQ_RESISTANCE,
	SR_MQ_CAPACITANCE,
	SR_MQ_TEMPERATURE,
	SR_MQ_FREQUENCY,
	SR_MQ_DUTY_CYCLE,
	SR_MQ_CONTINUITY,
	SR_MQ_PULSE_WIDTH,
	SR_MQ_CONDUCTANCE,
};

/* sr_datafeed_analog.unit values */
enum {
	SR_UNIT_VOLT,
	SR_UNIT_AMPERE,
	SR_UNIT_OHM,
	SR_UNIT_FARAD,
	SR_UNIT_KELVIN,
	SR_UNIT_CELSIUS,
	SR_UNIT_FAHRENHEIT,
	SR_UNIT_HERTZ,
	SR_UNIT_PERCENTAGE,
	SR_UNIT_BOOLEAN,
	SR_UNIT_SECOND,
	SR_UNIT_SIEMENS,
};

/** sr_datafeed_analog.flags values */
enum {
	/** Voltage measurement is alternating current. */
	SR_MQFLAG_AC = 0x01,
	/** Voltage measurement is direct current. */
	SR_MQFLAG_DC = 0x02,
	/** This is a true RMS measurement. */
	SR_MQFLAG_RMS = 0x04,
	/** Value is voltage drop across a diode, or NAN. */
	SR_MQFLAG_DIODE = 0x08,
	/** Device is in "hold" mode, i.e. repeating the last measurement. */
	SR_MQFLAG_HOLD = 0x10,
	/** Device is in "max" mode, only updating when a new max value is found. */
	SR_MQFLAG_MAX = 0x20,
	/** Device is in "min" mode, only updating when a new min value is found. */
	SR_MQFLAG_MIN = 0x40,
	/** Device is in autoranging mode. */
	SR_MQFLAG_AUTORANGE = 0x80,
	/** Device is in relative mode. */
	SR_MQFLAG_RELATIVE = 0x100,
};

struct sr_datafeed_packet {
	uint16_t type;
	void *payload;
};

struct sr_datafeed_header {
	int feed_version;
	struct timeval starttime;
};

struct sr_datafeed_meta_logic {
	int num_probes;
	uint64_t samplerate;
};

struct sr_datafeed_logic {
	uint64_t length;
	uint16_t unitsize;
	void *data;
};

struct sr_datafeed_meta_analog {
	int num_probes;
};

struct sr_datafeed_analog {
	int num_samples;
	/** Measured quantity (e.g. voltage, current, temperature) */
	int mq;
	/** Unit in which the MQ is measured. */
	int unit;
	/** Bitmap with extra information about the MQ. */
	uint64_t mqflags;
	float *data;
};

struct sr_input {
	struct sr_input_format *format;
	GHashTable *param;
	struct sr_dev_inst *sdi;
	void *internal;
};

struct sr_input_format {
	char *id;
	char *description;
	int (*format_match) (const char *filename);
	int (*init) (struct sr_input *in);
	int (*loadfile) (struct sr_input *in, const char *filename);
};

struct sr_output {
	struct sr_output_format *format;
	struct sr_dev_inst *sdi;
	char *param;
	void *internal;
};

struct sr_output_format {
	char *id;
	char *description;
	int df_type;
	int (*init) (struct sr_output *o);
	int (*data) (struct sr_output *o, const uint8_t *data_in,
		     uint64_t length_in, uint8_t **data_out,
		     uint64_t *length_out);
	int (*event) (struct sr_output *o, int event_type, uint8_t **data_out,
		      uint64_t *length_out);
	GString *(*recv) (struct sr_output *o, const struct sr_dev_inst *sdi,
			struct sr_datafeed_packet *packet);
	int (*cleanup) (struct sr_output *o);
};

struct sr_datastore {
	/* Size in bytes of the number of units stored in this datastore */
	int ds_unitsize;
	unsigned int num_units; /* TODO: uint64_t */
	GSList *chunklist;
};

/*
 * This represents a generic device connected to the system.
 * For device-specific information, ask the driver. The driver_index refers
 * to the device index within that driver; it may be handling more than one
 * device. All relevant driver calls take a dev_index parameter for this.
 */
struct sr_dev {
	/* Which driver handles this device */
	struct sr_dev_driver *driver;
	/* A driver may handle multiple devices of the same type */
	int driver_index;
	/* List of struct sr_probe* */
	GSList *probes;
	/* Data acquired by this device, if any */
	struct sr_datastore *datastore;
};

enum {
	SR_PROBE_LOGIC,
	SR_PROBE_ANALOG,
};

struct sr_probe {
	int index;
	int type;
	gboolean enabled;
	char *name;
	char *trigger;
};

struct sr_hwopt {
	int hwopt;
	const void *value;
};

/* Hardware driver options */
enum {
	SR_HWOPT_DUMMY = 0, /* Used to terminate lists. Must be 0! */

	/** Some drivers cannot detect the exact model they're talking to. */
	SR_HWOPT_MODEL,

	/** Specification on how to connect to a device */
	SR_HWOPT_CONN,

	/** Serial communication spec: <data bits><parity><stop bit> e.g. 8n1 */
	SR_HWOPT_SERIALCOMM,
};

/* Hardware device capabilities */
enum {
	SR_HWCAP_DUMMY = 0, /* Used to terminate lists. Must be 0! */

	/*--- Device classes ------------------------------------------------*/

	/** The device can act as logic analyzer. */
	SR_HWCAP_LOGIC_ANALYZER,

	/** The device can act as an oscilloscope. */
	SR_HWCAP_OSCILLOSCOPE,

	/** The device can act as a multimeter. */
	SR_HWCAP_MULTIMETER,

	/** The device is a demo device. */
	SR_HWCAP_DEMO_DEV,


	/*--- Device configuration ------------------------------------------*/

	/** The device supports setting/changing its samplerate. */
	SR_HWCAP_SAMPLERATE,

	/** The device supports setting a pre/post-trigger capture ratio. */
	SR_HWCAP_CAPTURE_RATIO,

	/* TODO? */
	/** The device supports setting a pattern (pattern generator mode). */
	SR_HWCAP_PATTERN_MODE,

	/** The device supports Run Length Encoding. */
	SR_HWCAP_RLE,

	/** The device supports setting trigger slope. */
	SR_HWCAP_TRIGGER_SLOPE,

	/** Trigger source. */
	SR_HWCAP_TRIGGER_SOURCE,

	/** Horizontal trigger position */
	SR_HWCAP_HORIZ_TRIGGERPOS,

	/** Buffer size. */
	SR_HWCAP_BUFFERSIZE,

	/** Time base. */
	SR_HWCAP_TIMEBASE,

	/** Filter. */
	SR_HWCAP_FILTER,

	/** Volts/div. */
	SR_HWCAP_VDIV,

	/** Coupling. */
	SR_HWCAP_COUPLING,


	/*--- Special stuff -------------------------------------------------*/

	/** Session filename */
	SR_HWCAP_SESSIONFILE,

	/* TODO: Better description. */
	/** The device supports specifying a capturefile to inject. */
	SR_HWCAP_CAPTUREFILE,

	/* TODO: Better description. */
	/** The device supports specifying the capturefile unit size. */
	SR_HWCAP_CAPTURE_UNITSIZE,

	/* TODO: Better description. */
	/** The device supports setting the number of probes. */
	SR_HWCAP_CAPTURE_NUM_PROBES,


	/*--- Acquisition modes ---------------------------------------------*/

	/**
	 * The device supports setting a sample time limit, i.e. how long the
	 * sample acquisition should run (in ms).
	 */
	SR_HWCAP_LIMIT_MSEC,

	/**
	 * The device supports setting a sample number limit, i.e. how many
	 * samples should be acquired.
	 */
	SR_HWCAP_LIMIT_SAMPLES,

	/**
	 * The device supports setting a frame limit, i.e. how many
	 * frames should be acquired.
	 */
	SR_HWCAP_LIMIT_FRAMES,

	/**
	 * The device supports continuous sampling, i.e. neither a time limit
	 * nor a sample number limit has to be supplied, it will just acquire
	 * samples continuously, until explicitly stopped by a certain command.
	 */
	SR_HWCAP_CONTINUOUS,

};

struct sr_hwcap_option {
	int hwcap;
	int type;
	char *description;
	char *shortname;
};

struct sr_dev_inst {
	struct sr_dev_driver *driver;
	int index;
	int status;
	int inst_type;
	char *vendor;
	char *model;
	char *version;
	GSList *probes;
	void *priv;
};

/* sr_dev_inst types */
enum {
	/** Device instance type for USB devices. */
	SR_INST_USB,
	/** Device instance type for serial port devices. */
	SR_INST_SERIAL,
};

/* Device instance status */
enum {
	SR_ST_NOT_FOUND,
	/* Found, but still booting */
	SR_ST_INITIALIZING,
	/* Live, but not in use */
	SR_ST_INACTIVE,
	/* Actively in use in a session */
	SR_ST_ACTIVE,
};

/*
 * TODO: This sucks, you just kinda have to "know" the returned type.
 * TODO: Need a DI to return the number of trigger stages supported.
 */

/* Device info IDs */
enum {
	/* A list of options supported by the driver. */
	SR_DI_HWOPTS,
	/* A list of capabilities supported by the device. */
	SR_DI_HWCAPS,
	/* The number of probes connected to this device */
	SR_DI_NUM_PROBES,
	/* The probe names on this device */
	SR_DI_PROBE_NAMES,
	/* Samplerates supported by this device, (struct sr_samplerates) */
	SR_DI_SAMPLERATES,
	/* Types of logic trigger supported, out of "01crf" (char *) */
	SR_DI_TRIGGER_TYPES,
	/* The currently set samplerate in Hz (uint64_t) */
	SR_DI_CUR_SAMPLERATE,
	/* Supported patterns (in pattern generator mode) */
	SR_DI_PATTERNS,
	/* Supported buffer sizes */
	SR_DI_BUFFERSIZES,
	/* Supported time bases */
	SR_DI_TIMEBASES,
	/* Supported trigger sources */
	SR_DI_TRIGGER_SOURCES,
	/* Supported filter targets */
	SR_DI_FILTERS,
	/* Valid volts/div values */
	SR_DI_VDIVS,
	/* Coupling options */
	SR_DI_COUPLING,
};

/*
 * A device supports either a range of samplerates with steps of a given
 * granularity, or is limited to a set of defined samplerates. Use either
 * step or list, but not both.
 */
struct sr_samplerates {
	uint64_t low;
	uint64_t high;
	uint64_t step;
	const uint64_t *list;
};

struct sr_dev_driver {
	/* Driver-specific */
	char *name;
	char *longname;
	int api_version;
	int (*init) (void);
	int (*cleanup) (void);
	GSList *(*scan) (GSList *options);
	GSList *(*dev_list) (void);
	int (*dev_clear) (void);

	/* Device-specific */
	int (*dev_open) (struct sr_dev_inst *sdi);
	int (*dev_close) (struct sr_dev_inst *sdi);
	int (*info_get) (int info_id, const void **data,
			const struct sr_dev_inst *sdi);
	int (*dev_config_set) (const struct sr_dev_inst *sdi, int hwcap,
			const void *value);
	int (*dev_acquisition_start) (const struct sr_dev_inst *sdi,
			void *cb_data);
	int (*dev_acquisition_stop) (const struct sr_dev_inst *sdi,
			void *cb_data);

	/* Dynamic */
	void *priv;
};

/* Private driver context. */
struct drv_context {
	GSList *instances;
};

struct sr_session {
	/* List of struct sr_dev* */
	GSList *devs;
	/* list of sr_receive_data_callback_t */
	GSList *datafeed_callbacks;
	GTimeVal starttime;

	unsigned int num_sources;

	/* Both "sources" and "pollfds" are of the same size and contain pairs of
	 * descriptor and callback function. We can not embed the GPollFD into the
	 * source struct since we want to be able to pass the array of all poll
	 * descriptors to g_poll.
	 */
	struct source *sources;
	GPollFD *pollfds;
	int source_timeout;
};

#include "proto.h"
#include "version.h"

#ifdef __cplusplus
}
#endif

#endif
Commit	Line	Data
	1	/*
	2	* This file is part of the sigrok project.
	3	*
	4	* Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
	5	*
	6	* This program is free software: you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation, either version 3 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#ifndef LIBSIGROK_SIGROK_H
	21	#define LIBSIGROK_SIGROK_H
	22
	23	#include <stdio.h>
	24	#include <sys/time.h>
	25	#include <stdint.h>
	26	#include <inttypes.h>
	27	#include <glib.h>
	28
	29	#ifdef __cplusplus
	30	extern "C" {
	31	#endif
	32
	33	/*
	34	* Status/error codes returned by libsigrok functions.
	35	*
	36	* All possible return codes of libsigrok 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 libsigrok, i.e. if one of the
	41	* libsigrok functions returns a "malloc error" it must be exactly the same
	42	* 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 SR_OK 0 /* No error */
	51	#define SR_ERR -1 /* Generic/unspecified error */
	52	#define SR_ERR_MALLOC -2 /* Malloc/calloc/realloc error */
	53	#define SR_ERR_ARG -3 /* Function argument error */
	54	#define SR_ERR_BUG -4 /* Errors hinting at internal bugs */
	55	#define SR_ERR_SAMPLERATE -5 /* Incorrect samplerate */
	56
	57	#define SR_MAX_NUM_PROBES 64 /* Limited by uint64_t. */
	58	#define SR_MAX_PROBENAME_LEN 32
	59
	60	/* Handy little macros */
	61	#define SR_HZ(n) (n)
	62	#define SR_KHZ(n) ((n) * 1000)
	63	#define SR_MHZ(n) ((n) * 1000000)
	64	#define SR_GHZ(n) ((n) * 1000000000)
	65
	66	#define SR_HZ_TO_NS(n) (1000000000 / (n))
	67
	68	/* libsigrok loglevels. */
	69	#define SR_LOG_NONE 0 /*< Output no messages at all. /
	70	#define SR_LOG_ERR 1 /*< Output error messages. /
	71	#define SR_LOG_WARN 2 /*< Output warnings. /
	72	#define SR_LOG_INFO 3 /*< Output informational messages. /
	73	#define SR_LOG_DBG 4 /*< Output debug messages. /
	74	#define SR_LOG_SPEW 5 /*< Output very noisy debug messages. /
	75
	76	/*
	77	* Use SR_API to mark public API symbols, and SR_PRIV for private symbols.
	78	*
	79	* Variables and functions marked 'static' are private already and don't
	80	* need SR_PRIV. However, functions which are not static (because they need
	81	* to be used in other libsigrok-internal files) but are also not meant to
	82	* be part of the public libsigrok API, must use SR_PRIV.
	83	*
	84	* This uses the 'visibility' feature of gcc (requires gcc >= 4.0).
	85	*
	86	* This feature is not available on MinGW/Windows, as it is a feature of
	87	* ELF files and MinGW/Windows uses PE files.
	88	*
	89	* Details: http://gcc.gnu.org/wiki/Visibility
	90	*/
	91
	92	/* Marks public libsigrok API symbols. */
	93	#ifndef _WIN32
	94	#define SR_API __attribute__((visibility("default")))
	95	#else
	96	#define SR_API
	97	#endif
	98
	99	/* Marks private, non-public libsigrok symbols (not part of the API). */
	100	#ifndef _WIN32
	101	#define SR_PRIV __attribute__((visibility("hidden")))
	102	#else
	103	#define SR_PRIV
	104	#endif
	105
	106	typedef int (sr_receive_data_callback_t)(int fd, int revents, void cb_data);
	107
	108	/* Data types used by hardware drivers for dev_config_set() */
	109	enum {
	110	SR_T_UINT64,
	111	SR_T_CHAR,
	112	SR_T_BOOL,
	113	SR_T_FLOAT,
	114	SR_T_RATIONAL_PERIOD,
	115	SR_T_RATIONAL_VOLT,
	116	SR_T_KEYVALUE,
	117	};
	118
	119	struct sr_rational {
	120	/* numerator */
	121	uint64_t p;
	122	/* denominator */
	123	uint64_t q;
	124	};
	125
	126	/* sr_datafeed_packet.type values */
	127	enum {
	128	SR_DF_HEADER,
	129	SR_DF_END,
	130	SR_DF_TRIGGER,
	131	SR_DF_LOGIC,
	132	SR_DF_META_LOGIC,
	133	SR_DF_ANALOG,
	134	SR_DF_META_ANALOG,
	135	SR_DF_FRAME_BEGIN,
	136	SR_DF_FRAME_END,
	137	};
	138
	139	/* sr_datafeed_analog.mq values */
	140	enum {
	141	SR_MQ_VOLTAGE,
	142	SR_MQ_CURRENT,
	143	SR_MQ_RESISTANCE,
	144	SR_MQ_CAPACITANCE,
	145	SR_MQ_TEMPERATURE,
	146	SR_MQ_FREQUENCY,
	147	SR_MQ_DUTY_CYCLE,
	148	SR_MQ_CONTINUITY,
	149	SR_MQ_PULSE_WIDTH,
	150	SR_MQ_CONDUCTANCE,
	151	};
	152
	153	/* sr_datafeed_analog.unit values */
	154	enum {
	155	SR_UNIT_VOLT,
	156	SR_UNIT_AMPERE,
	157	SR_UNIT_OHM,
	158	SR_UNIT_FARAD,
	159	SR_UNIT_KELVIN,
	160	SR_UNIT_CELSIUS,
	161	SR_UNIT_FAHRENHEIT,
	162	SR_UNIT_HERTZ,
	163	SR_UNIT_PERCENTAGE,
	164	SR_UNIT_BOOLEAN,
	165	SR_UNIT_SECOND,
	166	SR_UNIT_SIEMENS,
	167	};
	168
	169	/** sr_datafeed_analog.flags values */
	170	enum {
	171	/** Voltage measurement is alternating current. */
	172	SR_MQFLAG_AC = 0x01,
	173	/** Voltage measurement is direct current. */
	174	SR_MQFLAG_DC = 0x02,
	175	/** This is a true RMS measurement. */
	176	SR_MQFLAG_RMS = 0x04,
	177	/** Value is voltage drop across a diode, or NAN. */
	178	SR_MQFLAG_DIODE = 0x08,
	179	/** Device is in "hold" mode, i.e. repeating the last measurement. */
	180	SR_MQFLAG_HOLD = 0x10,
	181	/** Device is in "max" mode, only updating when a new max value is found. */
	182	SR_MQFLAG_MAX = 0x20,
	183	/** Device is in "min" mode, only updating when a new min value is found. */
	184	SR_MQFLAG_MIN = 0x40,
	185	/** Device is in autoranging mode. */
	186	SR_MQFLAG_AUTORANGE = 0x80,
	187	/** Device is in relative mode. */
	188	SR_MQFLAG_RELATIVE = 0x100,
	189	};
	190
	191	struct sr_datafeed_packet {
	192	uint16_t type;
	193	void *payload;
	194	};
	195
	196	struct sr_datafeed_header {
	197	int feed_version;
	198	struct timeval starttime;
	199	};
	200
	201	struct sr_datafeed_meta_logic {
	202	int num_probes;
	203	uint64_t samplerate;
	204	};
	205
	206	struct sr_datafeed_logic {
	207	uint64_t length;
	208	uint16_t unitsize;
	209	void *data;
	210	};
	211
	212	struct sr_datafeed_meta_analog {
	213	int num_probes;
	214	};
	215
	216	struct sr_datafeed_analog {
	217	int num_samples;
	218	/** Measured quantity (e.g. voltage, current, temperature) */
	219	int mq;
	220	/** Unit in which the MQ is measured. */
	221	int unit;
	222	/** Bitmap with extra information about the MQ. */
	223	uint64_t mqflags;
	224	float *data;
	225	};
	226
	227	struct sr_input {
	228	struct sr_input_format *format;
	229	GHashTable *param;
	230	struct sr_dev_inst *sdi;
	231	void *internal;
	232	};
	233
	234	struct sr_input_format {
	235	char *id;
	236	char *description;
	237	int (format_match) (const char filename);
	238	int (init) (struct sr_input in);
	239	int (loadfile) (struct sr_input in, const char *filename);
	240	};
	241
	242	struct sr_output {
	243	struct sr_output_format *format;
	244	struct sr_dev_inst *sdi;
	245	char *param;
	246	void *internal;
	247	};
	248
	249	struct sr_output_format {
	250	char *id;
	251	char *description;
	252	int df_type;
	253	int (init) (struct sr_output o);
	254	int (data) (struct sr_output o, const uint8_t *data_in,
	255	uint64_t length_in, uint8_t **data_out,
	256	uint64_t *length_out);
	257	int (event) (struct sr_output o, int event_type, uint8_t **data_out,
	258	uint64_t *length_out);
	259	GString (recv) (struct sr_output o, const struct sr_dev_inst sdi,
	260	struct sr_datafeed_packet *packet);
	261	int (cleanup) (struct sr_output o);
	262	};
	263
	264	struct sr_datastore {
	265	/* Size in bytes of the number of units stored in this datastore */
	266	int ds_unitsize;
	267	unsigned int num_units; /* TODO: uint64_t */
	268	GSList *chunklist;
	269	};
	270
	271	/*
	272	* This represents a generic device connected to the system.
	273	* For device-specific information, ask the driver. The driver_index refers
	274	* to the device index within that driver; it may be handling more than one
	275	* device. All relevant driver calls take a dev_index parameter for this.
	276	*/
	277	struct sr_dev {
	278	/* Which driver handles this device */
	279	struct sr_dev_driver *driver;
	280	/* A driver may handle multiple devices of the same type */
	281	int driver_index;
	282	/* List of struct sr_probe* */
	283	GSList *probes;
	284	/* Data acquired by this device, if any */
	285	struct sr_datastore *datastore;
	286	};
	287
	288	enum {
	289	SR_PROBE_LOGIC,
	290	SR_PROBE_ANALOG,
	291	};
	292
	293	struct sr_probe {
	294	int index;
	295	int type;
	296	gboolean enabled;
	297	char *name;
	298	char *trigger;
	299	};
	300
	301	struct sr_hwopt {
	302	int hwopt;
	303	const void *value;
	304	};
	305
	306	/* Hardware driver options */
	307	enum {
	308	SR_HWOPT_DUMMY = 0, /* Used to terminate lists. Must be 0! */
	309
	310	/** Some drivers cannot detect the exact model they're talking to. */
	311	SR_HWOPT_MODEL,
	312
	313	/** Specification on how to connect to a device */
	314	SR_HWOPT_CONN,
	315
	316	/** Serial communication spec: <data bits><parity><stop bit> e.g. 8n1 */
	317	SR_HWOPT_SERIALCOMM,
	318	};
	319
	320	/* Hardware device capabilities */
	321	enum {
	322	SR_HWCAP_DUMMY = 0, /* Used to terminate lists. Must be 0! */
	323
	324	/--- Device classes ------------------------------------------------/
	325
	326	/** The device can act as logic analyzer. */
	327	SR_HWCAP_LOGIC_ANALYZER,
	328
	329	/** The device can act as an oscilloscope. */
	330	SR_HWCAP_OSCILLOSCOPE,
	331
	332	/** The device can act as a multimeter. */
	333	SR_HWCAP_MULTIMETER,
	334
	335	/** The device is a demo device. */
	336	SR_HWCAP_DEMO_DEV,
	337
	338
	339	/--- Device configuration ------------------------------------------/
	340
	341	/** The device supports setting/changing its samplerate. */
	342	SR_HWCAP_SAMPLERATE,
	343
	344	/** The device supports setting a pre/post-trigger capture ratio. */
	345	SR_HWCAP_CAPTURE_RATIO,
	346
	347	/* TODO? */
	348	/** The device supports setting a pattern (pattern generator mode). */
	349	SR_HWCAP_PATTERN_MODE,
	350
	351	/** The device supports Run Length Encoding. */
	352	SR_HWCAP_RLE,
	353
	354	/** The device supports setting trigger slope. */
	355	SR_HWCAP_TRIGGER_SLOPE,
	356
	357	/** Trigger source. */
	358	SR_HWCAP_TRIGGER_SOURCE,
	359
	360	/** Horizontal trigger position */
	361	SR_HWCAP_HORIZ_TRIGGERPOS,
	362
	363	/** Buffer size. */
	364	SR_HWCAP_BUFFERSIZE,
	365
	366	/** Time base. */
	367	SR_HWCAP_TIMEBASE,
	368
	369	/** Filter. */
	370	SR_HWCAP_FILTER,
	371
	372	/** Volts/div. */
	373	SR_HWCAP_VDIV,
	374
	375	/** Coupling. */
	376	SR_HWCAP_COUPLING,
	377
	378
	379	/--- Special stuff -------------------------------------------------/
	380
	381	/** Session filename */
	382	SR_HWCAP_SESSIONFILE,
	383
	384	/* TODO: Better description. */
	385	/** The device supports specifying a capturefile to inject. */
	386	SR_HWCAP_CAPTUREFILE,
	387
	388	/* TODO: Better description. */
	389	/** The device supports specifying the capturefile unit size. */
	390	SR_HWCAP_CAPTURE_UNITSIZE,
	391
	392	/* TODO: Better description. */
	393	/** The device supports setting the number of probes. */
	394	SR_HWCAP_CAPTURE_NUM_PROBES,
	395
	396
	397	/--- Acquisition modes ---------------------------------------------/
	398
	399	/**
	400	* The device supports setting a sample time limit, i.e. how long the
	401	* sample acquisition should run (in ms).
	402	*/
	403	SR_HWCAP_LIMIT_MSEC,
	404
	405	/**
	406	* The device supports setting a sample number limit, i.e. how many
	407	* samples should be acquired.
	408	*/
	409	SR_HWCAP_LIMIT_SAMPLES,
	410
	411	/**
	412	* The device supports setting a frame limit, i.e. how many
	413	* frames should be acquired.
	414	*/
	415	SR_HWCAP_LIMIT_FRAMES,
	416
	417	/**
	418	* The device supports continuous sampling, i.e. neither a time limit
	419	* nor a sample number limit has to be supplied, it will just acquire
	420	* samples continuously, until explicitly stopped by a certain command.
	421	*/
	422	SR_HWCAP_CONTINUOUS,
	423
	424	};
	425
	426	struct sr_hwcap_option {
	427	int hwcap;
	428	int type;
	429	char *description;
	430	char *shortname;
	431	};
	432
	433	struct sr_dev_inst {
	434	struct sr_dev_driver *driver;
	435	int index;
	436	int status;
	437	int inst_type;
	438	char *vendor;
	439	char *model;
	440	char *version;
	441	GSList *probes;
	442	void *priv;
	443	};
	444
	445	/* sr_dev_inst types */
	446	enum {
	447	/** Device instance type for USB devices. */
	448	SR_INST_USB,
	449	/** Device instance type for serial port devices. */
	450	SR_INST_SERIAL,
	451	};
	452
	453	/* Device instance status */
	454	enum {
	455	SR_ST_NOT_FOUND,
	456	/* Found, but still booting */
	457	SR_ST_INITIALIZING,
	458	/* Live, but not in use */
	459	SR_ST_INACTIVE,
	460	/* Actively in use in a session */
	461	SR_ST_ACTIVE,
	462	};
	463
	464	/*
	465	* TODO: This sucks, you just kinda have to "know" the returned type.
	466	* TODO: Need a DI to return the number of trigger stages supported.
	467	*/
	468
	469	/* Device info IDs */
	470	enum {
	471	/* A list of options supported by the driver. */
	472	SR_DI_HWOPTS,
	473	/* A list of capabilities supported by the device. */
	474	SR_DI_HWCAPS,
	475	/* The number of probes connected to this device */
	476	SR_DI_NUM_PROBES,
	477	/* The probe names on this device */
	478	SR_DI_PROBE_NAMES,
	479	/* Samplerates supported by this device, (struct sr_samplerates) */
	480	SR_DI_SAMPLERATES,
	481	/* Types of logic trigger supported, out of "01crf" (char ) /
	482	SR_DI_TRIGGER_TYPES,
	483	/* The currently set samplerate in Hz (uint64_t) */
	484	SR_DI_CUR_SAMPLERATE,
	485	/* Supported patterns (in pattern generator mode) */
	486	SR_DI_PATTERNS,
	487	/* Supported buffer sizes */
	488	SR_DI_BUFFERSIZES,
	489	/* Supported time bases */
	490	SR_DI_TIMEBASES,
	491	/* Supported trigger sources */
	492	SR_DI_TRIGGER_SOURCES,
	493	/* Supported filter targets */
	494	SR_DI_FILTERS,
	495	/* Valid volts/div values */
	496	SR_DI_VDIVS,
	497	/* Coupling options */
	498	SR_DI_COUPLING,
	499	};
	500
	501	/*
	502	* A device supports either a range of samplerates with steps of a given
	503	* granularity, or is limited to a set of defined samplerates. Use either
	504	* step or list, but not both.
	505	*/
	506	struct sr_samplerates {
	507	uint64_t low;
	508	uint64_t high;
	509	uint64_t step;
	510	const uint64_t *list;
	511	};
	512
	513	struct sr_dev_driver {
	514	/* Driver-specific */
	515	char *name;
	516	char *longname;
	517	int api_version;
	518	int (*init) (void);
	519	int (*cleanup) (void);
	520	GSList (scan) (GSList *options);
	521	GSList (dev_list) (void);
	522	int (*dev_clear) (void);
	523
	524	/* Device-specific */
	525	int (dev_open) (struct sr_dev_inst sdi);
	526	int (dev_close) (struct sr_dev_inst sdi);
	527	int (info_get) (int info_id, const void *data,
	528	const struct sr_dev_inst *sdi);
	529	int (dev_config_set) (const struct sr_dev_inst sdi, int hwcap,
	530	const void *value);
	531	int (dev_acquisition_start) (const struct sr_dev_inst sdi,
	532	void *cb_data);
	533	int (dev_acquisition_stop) (const struct sr_dev_inst sdi,
	534	void *cb_data);
	535
	536	/* Dynamic */
	537	void *priv;
	538	};
	539
	540	/* Private driver context. */
	541	struct drv_context {
	542	GSList *instances;
	543	};
	544
	545	struct sr_session {
	546	/* List of struct sr_dev* */
	547	GSList *devs;
	548	/* list of sr_receive_data_callback_t */
	549	GSList *datafeed_callbacks;
	550	GTimeVal starttime;
	551
	552	unsigned int num_sources;
	553
	554	/* Both "sources" and "pollfds" are of the same size and contain pairs of
	555	* descriptor and callback function. We can not embed the GPollFD into the
	556	* source struct since we want to be able to pass the array of all poll
	557	* descriptors to g_poll.
	558	*/
	559	struct source *sources;
	560	GPollFD *pollfds;
	561	int source_timeout;
	562	};
	563
	564	#include "proto.h"
	565	#include "version.h"
	566
	567	#ifdef __cplusplus
	568	}
	569	#endif
	570
	571	#endif