[libsigrok.git] / sigrok.h.in

/*
 * This file is part of the sigrok project.
 *
 * Copyright (C) 2010 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 SIGROK_SIGROK_H
#define SIGROK_SIGROK_H

#include <stdio.h>
#include <sys/time.h>
#include <stdint.h>
#include <inttypes.h>
#include <glib.h>
#ifdef HAVE_LIBUSB_1_0
#include <libusb.h>
#endif

#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_SAMPLERATE    -4 /* 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
#define SR_LOG_ERR	 1
#define SR_LOG_WARN	 2
#define SR_LOG_INFO	 3
#define SR_LOG_DBG	 4
#define SR_LOG_SPEW	 5

typedef int (*sr_receive_data_callback) (int fd, int revents, void *user_data);

/* Data types used by hardware plugins for set_configuration() */
enum {
	SR_T_UINT64,
	SR_T_CHAR,
	SR_T_BOOL,
};

#if 0
/* (Unused) protocol decoder stack entry */
struct sr_protocol {
	char *name;
	int id;
	int stackindex;
};
#endif

/* sr_datafeed_packet.type values */
enum {
	SR_DF_HEADER,
	SR_DF_END,
	SR_DF_TRIGGER,
	SR_DF_LOGIC,
	SR_DF_ANALOG,
	SR_DF_PD,
};

struct sr_datafeed_packet {
	uint16_t type;
	/* timeoffset since start, in picoseconds */
	uint64_t timeoffset;
	/* duration of data in this packet, in picoseconds */
	uint64_t duration;
	void *payload;
};

struct sr_datafeed_header {
	int feed_version;
	struct timeval starttime;
	uint64_t samplerate;
	int num_analog_probes;
	int num_logic_probes;
};

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

struct sr_datafeed_pd {
	char *protocol;
	char *annotation;
	unsigned char *data;
};

#if defined(HAVE_LA_ALSA)
struct sr_analog_probe {
	uint8_t att;
	uint8_t res;	/* Needs to be a power of 2, FIXME */
	uint16_t val;	/* Max hardware ADC width is 16bits */
};

struct sr_analog_sample {
	uint8_t num_probes; /* Max hardware probes is 256 */
	struct sr_analog_probe probes[];
};
#endif

struct sr_input {
	struct sr_input_format *format;
	char *param;
	struct sr_device *vdevice;
};

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_device *device;
	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 char *data_in,
		     uint64_t length_in, char **data_out, uint64_t *length_out);
	int (*event) (struct sr_output *o, int event_type, char **data_out,
		      uint64_t *length_out);
};

#if 0
struct sr_analyzer {
	char *name;
	char *filename;
	/*
	 * TODO: Parameters? If so, configured plugins need another struct.
	 * TODO: Input and output format?
	 */
};
#endif

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 plugin. The plugin_index refers
 * to the device index within that plugin; it may be handling more than one
 * device. All relevant plugin calls take a device_index parameter for this.
 */
struct sr_device {
	/* Which plugin handles this device */
	struct sr_device_plugin *plugin;
	/* A plugin may handle multiple devices of the same type */
	int plugin_index;
	/* List of struct sr_probe* */
	GSList *probes;
	/* Data acquired by this device, if any */
	struct sr_datastore *datastore;
};

enum {
	SR_PROBE_TYPE_LOGIC,
	SR_PROBE_TYPE_ANALOG,
};

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

/* TODO: Get rid of this global variable. */
extern GSList *devices;

/* Hardware plugin capabilities */
enum {
	SR_HWCAP_DUMMY,             /* Used to terminate lists */

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

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

	/* TODO: SR_HWCAP_SCOPE, SW_HWCAP_PATTERN_GENERATOR, etc.? */

	/*--- Device options ------------------------------------------------*/

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

	/* TODO: Better description? Rename to PROBE_AND_TRIGGER_CONFIG? */
	/** The device supports setting a probe mask. */
	SR_HWCAP_PROBECONFIG,

	/** 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,

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

	/* 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 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,

	/* TODO: SR_HWCAP_JUST_SAMPLE or similar. */
};

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

struct sr_device_instance {
	int index;
	int status;
	int instance_type;
	char *vendor;
	char *model;
	char *version;
	void *priv;
	union {
		struct sr_usb_device_instance *usb;
		struct sr_serial_device_instance *serial;
	};
};

/* sr_device_instance types */
enum {
	SR_USB_INSTANCE,
	SR_SERIAL_INSTANCE,
};

#ifdef HAVE_LIBUSB_1_0
struct sr_usb_device_instance {
	uint8_t bus;
	uint8_t address;
	struct libusb_device_handle *devhdl;
};
#endif

struct sr_serial_device_instance {
	char *port;
	int fd;
};

/* 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 {
	/* struct sr_device_instance for this specific device */
	SR_DI_INSTANCE,
	/* The number of probes connected to this device */
	SR_DI_NUM_PROBES,
	/* Samplerates supported by this device, (struct sr_samplerates) */
	SR_DI_SAMPLERATES,
	/* Types of trigger supported, out of "01crf" (char *) */
	SR_DI_TRIGGER_TYPES,
	/* The currently set samplerate in Hz (uint64_t) */
	SR_DI_CUR_SAMPLERATE,
	/* Supported pattern generator modes */
	SR_DI_PATTERNMODES,
};

/*
 * 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;
	uint64_t *list;
};

struct sr_device_plugin {
	/* Plugin-specific */
	char *name;
	char *longname;
	int api_version;
	int (*init) (const char *deviceinfo);
	void (*cleanup) (void);

	/* Device-specific */
	int (*opendev) (int device_index);
	int (*closedev) (int device_index);
	void *(*get_device_info) (int device_index, int device_info_id);
	int (*get_status) (int device_index);
	int *(*get_capabilities) (void);
	int (*set_configuration) (int device_index, int capability, void *value);
	int (*start_acquisition) (int device_index, gpointer session_device_id);
	void (*stop_acquisition) (int device_index, gpointer session_device_id);
};

struct sr_session {
	/* List of struct sr_device* */
	GSList *devices;
	/* List of struct analyzer* */
	GSList *analyzers;
	/* list of sr_receive_data_callback */
	GSList *datafeed_callbacks;
	GTimeVal starttime;
	gboolean running;
};

#include "sigrok-proto.h"

#ifdef __cplusplus
}
#endif

#endif
Commit	Line	Data
	1	/*
	2	* This file is part of the sigrok project.
	3	*
	4	* Copyright (C) 2010 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 SIGROK_SIGROK_H
	21	#define SIGROK_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	#ifdef HAVE_LIBUSB_1_0
	29	#include <libusb.h>
	30	#endif
	31
	32	#ifdef __cplusplus
	33	extern "C" {
	34	#endif
	35
	36	/*
	37	* Status/error codes returned by libsigrok functions.
	38	*
	39	* All possible return codes of libsigrok functions must be listed here.
	40	* Functions should never return hardcoded numbers as status, but rather
	41	* use these #defines instead. All error codes are negative numbers.
	42	*
	43	* The error codes are globally unique in libsigrok, i.e. if one of the
	44	* libsigrok functions returns a "malloc error" it must be exactly the same
	45	* return value as used by all other functions to indicate "malloc error".
	46	* There must be no functions which indicate two different errors via the
	47	* same return code.
	48	*
	49	* Also, for compatibility reasons, no defined return codes are ever removed
	50	* or reused for different #defines later. You can only add new #defines and
	51	* return codes, but never remove or redefine existing ones.
	52	*/
	53	#define SR_OK 0 /* No error */
	54	#define SR_ERR -1 /* Generic/unspecified error */
	55	#define SR_ERR_MALLOC -2 /* Malloc/calloc/realloc error */
	56	#define SR_ERR_ARG -3 /* Function argument error */
	57	#define SR_ERR_SAMPLERATE -4 /* Incorrect samplerate */
	58
	59	#define SR_MAX_NUM_PROBES 64 /* Limited by uint64_t. */
	60	#define SR_MAX_PROBENAME_LEN 32
	61
	62	/* Handy little macros */
	63	#define SR_HZ(n) (n)
	64	#define SR_KHZ(n) ((n) * 1000)
	65	#define SR_MHZ(n) ((n) * 1000000)
	66	#define SR_GHZ(n) ((n) * 1000000000)
	67
	68	#define SR_HZ_TO_NS(n) (1000000000 / (n))
	69
	70	/* libsigrok loglevels. */
	71	#define SR_LOG_NONE 0
	72	#define SR_LOG_ERR 1
	73	#define SR_LOG_WARN 2
	74	#define SR_LOG_INFO 3
	75	#define SR_LOG_DBG 4
	76	#define SR_LOG_SPEW 5
	77
	78	typedef int (sr_receive_data_callback) (int fd, int revents, void user_data);
	79
	80	/* Data types used by hardware plugins for set_configuration() */
	81	enum {
	82	SR_T_UINT64,
	83	SR_T_CHAR,
	84	SR_T_BOOL,
	85	};
	86
	87	#if 0
	88	/* (Unused) protocol decoder stack entry */
	89	struct sr_protocol {
	90	char *name;
	91	int id;
	92	int stackindex;
	93	};
	94	#endif
	95
	96	/* sr_datafeed_packet.type values */
	97	enum {
	98	SR_DF_HEADER,
	99	SR_DF_END,
	100	SR_DF_TRIGGER,
	101	SR_DF_LOGIC,
	102	SR_DF_ANALOG,
	103	SR_DF_PD,
	104	};
	105
	106	struct sr_datafeed_packet {
	107	uint16_t type;
	108	/* timeoffset since start, in picoseconds */
	109	uint64_t timeoffset;
	110	/* duration of data in this packet, in picoseconds */
	111	uint64_t duration;
	112	void *payload;
	113	};
	114
	115	struct sr_datafeed_header {
	116	int feed_version;
	117	struct timeval starttime;
	118	uint64_t samplerate;
	119	int num_analog_probes;
	120	int num_logic_probes;
	121	};
	122
	123	struct sr_datafeed_logic {
	124	uint64_t length;
	125	uint16_t unitsize;
	126	void *data;
	127	};
	128
	129	struct sr_datafeed_pd {
	130	char *protocol;
	131	char *annotation;
	132	unsigned char *data;
	133	};
	134
	135	#if defined(HAVE_LA_ALSA)
	136	struct sr_analog_probe {
	137	uint8_t att;
	138	uint8_t res; /* Needs to be a power of 2, FIXME */
	139	uint16_t val; /* Max hardware ADC width is 16bits */
	140	};
	141
	142	struct sr_analog_sample {
	143	uint8_t num_probes; /* Max hardware probes is 256 */
	144	struct sr_analog_probe probes[];
	145	};
	146	#endif
	147
	148	struct sr_input {
	149	struct sr_input_format *format;
	150	char *param;
	151	struct sr_device *vdevice;
	152	};
	153
	154	struct sr_input_format {
	155	char *id;
	156	char *description;
	157	int (format_match) (const char filename);
	158	int (init) (struct sr_input in);
	159	int (loadfile) (struct sr_input in, const char *filename);
	160	};
	161
	162	struct sr_output {
	163	struct sr_output_format *format;
	164	struct sr_device *device;
	165	char *param;
	166	void *internal;
	167	};
	168
	169	struct sr_output_format {
	170	char *id;
	171	char *description;
	172	int df_type;
	173	int (init) (struct sr_output o);
	174	int (data) (struct sr_output o, const char *data_in,
	175	uint64_t length_in, char *data_out, uint64_t length_out);
	176	int (event) (struct sr_output o, int event_type, char **data_out,
	177	uint64_t *length_out);
	178	};
	179
	180	#if 0
	181	struct sr_analyzer {
	182	char *name;
	183	char *filename;
	184	/*
	185	* TODO: Parameters? If so, configured plugins need another struct.
	186	* TODO: Input and output format?
	187	*/
	188	};
	189	#endif
	190
	191	struct sr_datastore {
	192	/* Size in bytes of the number of units stored in this datastore */
	193	int ds_unitsize;
	194	unsigned int num_units; /* TODO: uint64_t */
	195	GSList *chunklist;
	196	};
	197
	198	/*
	199	* This represents a generic device connected to the system.
	200	* For device-specific information, ask the plugin. The plugin_index refers
	201	* to the device index within that plugin; it may be handling more than one
	202	* device. All relevant plugin calls take a device_index parameter for this.
	203	*/
	204	struct sr_device {
	205	/* Which plugin handles this device */
	206	struct sr_device_plugin *plugin;
	207	/* A plugin may handle multiple devices of the same type */
	208	int plugin_index;
	209	/* List of struct sr_probe* */
	210	GSList *probes;
	211	/* Data acquired by this device, if any */
	212	struct sr_datastore *datastore;
	213	};
	214
	215	enum {
	216	SR_PROBE_TYPE_LOGIC,
	217	SR_PROBE_TYPE_ANALOG,
	218	};
	219
	220	struct sr_probe {
	221	int index;
	222	int type;
	223	gboolean enabled;
	224	char *name;
	225	char *trigger;
	226	};
	227
	228	/* TODO: Get rid of this global variable. */
	229	extern GSList *devices;
	230
	231	/* Hardware plugin capabilities */
	232	enum {
	233	SR_HWCAP_DUMMY, /* Used to terminate lists */
	234
	235	/--- Device classes ------------------------------------------------/
	236
	237	/** The device can act as logic analyzer. */
	238	SR_HWCAP_LOGIC_ANALYZER,
	239
	240	/* TODO: SR_HWCAP_SCOPE, SW_HWCAP_PATTERN_GENERATOR, etc.? */
	241
	242	/--- Device options ------------------------------------------------/
	243
	244	/** The device supports setting/changing its samplerate. */
	245	SR_HWCAP_SAMPLERATE,
	246
	247	/* TODO: Better description? Rename to PROBE_AND_TRIGGER_CONFIG? */
	248	/** The device supports setting a probe mask. */
	249	SR_HWCAP_PROBECONFIG,
	250
	251	/** The device supports setting a pre/post-trigger capture ratio. */
	252	SR_HWCAP_CAPTURE_RATIO,
	253
	254	/* TODO? */
	255	/** The device supports setting a pattern (pattern generator mode). */
	256	SR_HWCAP_PATTERN_MODE,
	257
	258	/** The device supports Run Length Encoding. */
	259	SR_HWCAP_RLE,
	260
	261	/--- Special stuff -------------------------------------------------/
	262
	263	/* TODO: Better description. */
	264	/** The device supports specifying a capturefile to inject. */
	265	SR_HWCAP_CAPTUREFILE,
	266
	267	/* TODO: Better description. */
	268	/** The device supports specifying the capturefile unit size. */
	269	SR_HWCAP_CAPTURE_UNITSIZE,
	270
	271	/* TODO: Better description. */
	272	/** The device supports setting the number of probes. */
	273	SR_HWCAP_CAPTURE_NUM_PROBES,
	274
	275	/--- Acquisition modes ---------------------------------------------/
	276
	277	/**
	278	* The device supports setting a sample time limit, i.e. how long the
	279	* sample acquisition should run (in ms).
	280	*/
	281	SR_HWCAP_LIMIT_MSEC,
	282
	283	/**
	284	* The device supports setting a sample number limit, i.e. how many
	285	* samples should be acquired.
	286	*/
	287	SR_HWCAP_LIMIT_SAMPLES,
	288
	289	/**
	290	* The device supports continuous sampling, i.e. neither a time limit
	291	* nor a sample number limit has to be supplied, it will just acquire
	292	* samples continuously, until explicitly stopped by a certain command.
	293	*/
	294	SR_HWCAP_CONTINUOUS,
	295
	296	/* TODO: SR_HWCAP_JUST_SAMPLE or similar. */
	297	};
	298
	299	struct sr_hwcap_option {
	300	int capability;
	301	int type;
	302	char *description;
	303	char *shortname;
	304	};
	305
	306	struct sr_device_instance {
	307	int index;
	308	int status;
	309	int instance_type;
	310	char *vendor;
	311	char *model;
	312	char *version;
	313	void *priv;
	314	union {
	315	struct sr_usb_device_instance *usb;
	316	struct sr_serial_device_instance *serial;
	317	};
	318	};
	319
	320	/* sr_device_instance types */
	321	enum {
	322	SR_USB_INSTANCE,
	323	SR_SERIAL_INSTANCE,
	324	};
	325
	326	#ifdef HAVE_LIBUSB_1_0
	327	struct sr_usb_device_instance {
	328	uint8_t bus;
	329	uint8_t address;
	330	struct libusb_device_handle *devhdl;
	331	};
	332	#endif
	333
	334	struct sr_serial_device_instance {
	335	char *port;
	336	int fd;
	337	};
	338
	339	/* Device instance status */
	340	enum {
	341	SR_ST_NOT_FOUND,
	342	/* Found, but still booting */
	343	SR_ST_INITIALIZING,
	344	/* Live, but not in use */
	345	SR_ST_INACTIVE,
	346	/* Actively in use in a session */
	347	SR_ST_ACTIVE,
	348	};
	349
	350	/*
	351	* TODO: This sucks, you just kinda have to "know" the returned type.
	352	* TODO: Need a DI to return the number of trigger stages supported.
	353	*/
	354
	355	/* Device info IDs */
	356	enum {
	357	/* struct sr_device_instance for this specific device */
	358	SR_DI_INSTANCE,
	359	/* The number of probes connected to this device */
	360	SR_DI_NUM_PROBES,
	361	/* Samplerates supported by this device, (struct sr_samplerates) */
	362	SR_DI_SAMPLERATES,
	363	/* Types of trigger supported, out of "01crf" (char ) /
	364	SR_DI_TRIGGER_TYPES,
	365	/* The currently set samplerate in Hz (uint64_t) */
	366	SR_DI_CUR_SAMPLERATE,
	367	/* Supported pattern generator modes */
	368	SR_DI_PATTERNMODES,
	369	};
	370
	371	/*
	372	* A device supports either a range of samplerates with steps of a given
	373	* granularity, or is limited to a set of defined samplerates. Use either
	374	* step or list, but not both.
	375	*/
	376	struct sr_samplerates {
	377	uint64_t low;
	378	uint64_t high;
	379	uint64_t step;
	380	uint64_t *list;
	381	};
	382
	383	struct sr_device_plugin {
	384	/* Plugin-specific */
	385	char *name;
	386	char *longname;
	387	int api_version;
	388	int (init) (const char deviceinfo);
	389	void (*cleanup) (void);
	390
	391	/* Device-specific */
	392	int (*opendev) (int device_index);
	393	int (*closedev) (int device_index);
	394	void (get_device_info) (int device_index, int device_info_id);
	395	int (*get_status) (int device_index);
	396	int (get_capabilities) (void);
	397	int (set_configuration) (int device_index, int capability, void value);
	398	int (*start_acquisition) (int device_index, gpointer session_device_id);
	399	void (*stop_acquisition) (int device_index, gpointer session_device_id);
	400	};
	401
	402	struct sr_session {
	403	/* List of struct sr_device* */
	404	GSList *devices;
	405	/* List of struct analyzer* */
	406	GSList *analyzers;
	407	/* list of sr_receive_data_callback */
	408	GSList *datafeed_callbacks;
	409	GTimeVal starttime;
	410	gboolean running;
	411	};
	412
	413	#include "sigrok-proto.h"
	414
	415	#ifdef __cplusplus
	416	}
	417	#endif
	418
	419	#endif