[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

#define SIGROK_MAJOR_VERSION @SIGROK_MAJOR_VERSION@
#define SIGROK_MINOR_VERSION @SIGROK_MINOR_VERSION@
#define SIGROK_MICRO_VERSION @SIGROK_MICRO_VERSION@
#define SIGROK_VERSION       "@SIGROK_VERSION@"

/*
 * 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_NULL,
};

#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	#define SIGROK_MAJOR_VERSION @SIGROK_MAJOR_VERSION@
	37	#define SIGROK_MINOR_VERSION @SIGROK_MINOR_VERSION@
	38	#define SIGROK_MICRO_VERSION @SIGROK_MICRO_VERSION@
	39	#define SIGROK_VERSION "@SIGROK_VERSION@"
	40
	41	/*
	42	* Status/error codes returned by libsigrok functions.
	43	*
	44	* All possible return codes of libsigrok functions must be listed here.
	45	* Functions should never return hardcoded numbers as status, but rather
	46	* use these #defines instead. All error codes are negative numbers.
	47	*
	48	* The error codes are globally unique in libsigrok, i.e. if one of the
	49	* libsigrok functions returns a "malloc error" it must be exactly the same
	50	* return value as used by all other functions to indicate "malloc error".
	51	* There must be no functions which indicate two different errors via the
	52	* same return code.
	53	*
	54	* Also, for compatibility reasons, no defined return codes are ever removed
	55	* or reused for different #defines later. You can only add new #defines and
	56	* return codes, but never remove or redefine existing ones.
	57	*/
	58	#define SR_OK 0 /* No error */
	59	#define SR_ERR -1 /* Generic/unspecified error */
	60	#define SR_ERR_MALLOC -2 /* Malloc/calloc/realloc error */
	61	#define SR_ERR_ARG -3 /* Function argument error */
	62	#define SR_ERR_SAMPLERATE -4 /* Incorrect samplerate */
	63
	64	#define SR_MAX_NUM_PROBES 64 /* Limited by uint64_t. */
	65	#define SR_MAX_PROBENAME_LEN 32
	66
	67	/* Handy little macros */
	68	#define SR_HZ(n) (n)
	69	#define SR_KHZ(n) ((n) * 1000)
	70	#define SR_MHZ(n) ((n) * 1000000)
	71	#define SR_GHZ(n) ((n) * 1000000000)
	72
	73	#define SR_HZ_TO_NS(n) (1000000000 / (n))
	74
	75	/* libsigrok loglevels. */
	76	#define SR_LOG_NONE 0
	77	#define SR_LOG_ERR 1
	78	#define SR_LOG_WARN 2
	79	#define SR_LOG_INFO 3
	80	#define SR_LOG_DBG 4
	81	#define SR_LOG_SPEW 5
	82
	83	typedef int (sr_receive_data_callback) (int fd, int revents, void user_data);
	84
	85	/* Data types used by hardware plugins for set_configuration() */
	86	enum {
	87	SR_T_UINT64,
	88	SR_T_CHAR,
	89	SR_T_NULL,
	90	};
	91
	92	#if 0
	93	/* (Unused) protocol decoder stack entry */
	94	struct sr_protocol {
	95	char *name;
	96	int id;
	97	int stackindex;
	98	};
	99	#endif
	100
	101	/* sr_datafeed_packet.type values */
	102	enum {
	103	SR_DF_HEADER,
	104	SR_DF_END,
	105	SR_DF_TRIGGER,
	106	SR_DF_LOGIC,
	107	SR_DF_ANALOG,
	108	SR_DF_PD,
	109	};
	110
	111	struct sr_datafeed_packet {
	112	uint16_t type;
	113	/* timeoffset since start, in picoseconds */
	114	uint64_t timeoffset;
	115	/* duration of data in this packet, in picoseconds */
	116	uint64_t duration;
	117	void *payload;
	118	};
	119
	120	struct sr_datafeed_header {
	121	int feed_version;
	122	struct timeval starttime;
	123	uint64_t samplerate;
	124	int num_analog_probes;
	125	int num_logic_probes;
	126	};
	127
	128	struct sr_datafeed_logic {
	129	uint64_t length;
	130	uint16_t unitsize;
	131	void *data;
	132	};
	133
	134	struct sr_datafeed_pd {
	135	char *protocol;
	136	char *annotation;
	137	unsigned char *data;
	138	};
	139
	140	#if defined(HAVE_LA_ALSA)
	141	struct sr_analog_probe {
	142	uint8_t att;
	143	uint8_t res; /* Needs to be a power of 2, FIXME */
	144	uint16_t val; /* Max hardware ADC width is 16bits */
	145	};
	146
	147	struct sr_analog_sample {
	148	uint8_t num_probes; /* Max hardware probes is 256 */
	149	struct sr_analog_probe probes[];
	150	};
	151	#endif
	152
	153	struct sr_input {
	154	struct sr_input_format *format;
	155	char *param;
	156	struct sr_device *vdevice;
	157	};
	158
	159	struct sr_input_format {
	160	char *id;
	161	char *description;
	162	int (format_match) (const char filename);
	163	int (init) (struct sr_input in);
	164	int (loadfile) (struct sr_input in, const char *filename);
	165	};
	166
	167	struct sr_output {
	168	struct sr_output_format *format;
	169	struct sr_device *device;
	170	char *param;
	171	void *internal;
	172	};
	173
	174	struct sr_output_format {
	175	char *id;
	176	char *description;
	177	int df_type;
	178	int (init) (struct sr_output o);
	179	int (data) (struct sr_output o, const char *data_in,
	180	uint64_t length_in, char *data_out, uint64_t length_out);
	181	int (event) (struct sr_output o, int event_type, char **data_out,
	182	uint64_t *length_out);
	183	};
	184
	185	#if 0
	186	struct sr_analyzer {
	187	char *name;
	188	char *filename;
	189	/*
	190	* TODO: Parameters? If so, configured plugins need another struct.
	191	* TODO: Input and output format?
	192	*/
	193	};
	194	#endif
	195
	196	struct sr_datastore {
	197	/* Size in bytes of the number of units stored in this datastore */
	198	int ds_unitsize;
	199	unsigned int num_units; /* TODO: uint64_t */
	200	GSList *chunklist;
	201	};
	202
	203	/*
	204	* This represents a generic device connected to the system.
	205	* For device-specific information, ask the plugin. The plugin_index refers
	206	* to the device index within that plugin; it may be handling more than one
	207	* device. All relevant plugin calls take a device_index parameter for this.
	208	*/
	209	struct sr_device {
	210	/* Which plugin handles this device */
	211	struct sr_device_plugin *plugin;
	212	/* A plugin may handle multiple devices of the same type */
	213	int plugin_index;
	214	/* List of struct sr_probe* */
	215	GSList *probes;
	216	/* Data acquired by this device, if any */
	217	struct sr_datastore *datastore;
	218	};
	219
	220	enum {
	221	SR_PROBE_TYPE_LOGIC,
	222	SR_PROBE_TYPE_ANALOG,
	223	};
	224
	225	struct sr_probe {
	226	int index;
	227	int type;
	228	gboolean enabled;
	229	char *name;
	230	char *trigger;
	231	};
	232
	233	/* TODO: Get rid of this global variable. */
	234	extern GSList *devices;
	235
	236	/* Hardware plugin capabilities */
	237	enum {
	238	SR_HWCAP_DUMMY, /* Used to terminate lists */
	239
	240	/--- Device classes ------------------------------------------------/
	241
	242	/** The device can act as logic analyzer. */
	243	SR_HWCAP_LOGIC_ANALYZER,
	244
	245	/* TODO: SR_HWCAP_SCOPE, SW_HWCAP_PATTERN_GENERATOR, etc.? */
	246
	247	/--- Device options ------------------------------------------------/
	248
	249	/** The device supports setting/changing its samplerate. */
	250	SR_HWCAP_SAMPLERATE,
	251
	252	/* TODO: Better description? Rename to PROBE_AND_TRIGGER_CONFIG? */
	253	/** The device supports setting a probe mask. */
	254	SR_HWCAP_PROBECONFIG,
	255
	256	/** The device supports setting a pre/post-trigger capture ratio. */
	257	SR_HWCAP_CAPTURE_RATIO,
	258
	259	/* TODO? */
	260	/** The device supports setting a pattern (pattern generator mode). */
	261	SR_HWCAP_PATTERN_MODE,
	262
	263	/** The device supports Run Length Encoding. */
	264	SR_HWCAP_RLE,
	265
	266	/--- Special stuff -------------------------------------------------/
	267
	268	/* TODO: Better description. */
	269	/** The device supports specifying a capturefile to inject. */
	270	SR_HWCAP_CAPTUREFILE,
	271
	272	/* TODO: Better description. */
	273	/** The device supports specifying the capturefile unit size. */
	274	SR_HWCAP_CAPTURE_UNITSIZE,
	275
	276	/* TODO: Better description. */
	277	/** The device supports setting the number of probes. */
	278	SR_HWCAP_CAPTURE_NUM_PROBES,
	279
	280	/--- Acquisition modes ---------------------------------------------/
	281
	282	/**
	283	* The device supports setting a sample time limit, i.e. how long the
	284	* sample acquisition should run (in ms).
	285	*/
	286	SR_HWCAP_LIMIT_MSEC,
	287
	288	/**
	289	* The device supports setting a sample number limit, i.e. how many
	290	* samples should be acquired.
	291	*/
	292	SR_HWCAP_LIMIT_SAMPLES,
	293
	294	/**
	295	* The device supports continuous sampling, i.e. neither a time limit
	296	* nor a sample number limit has to be supplied, it will just acquire
	297	* samples continuously, until explicitly stopped by a certain command.
	298	*/
	299	SR_HWCAP_CONTINUOUS,
	300
	301	/* TODO: SR_HWCAP_JUST_SAMPLE or similar. */
	302	};
	303
	304	struct sr_hwcap_option {
	305	int capability;
	306	int type;
	307	char *description;
	308	char *shortname;
	309	};
	310
	311	struct sr_device_instance {
	312	int index;
	313	int status;
	314	int instance_type;
	315	char *vendor;
	316	char *model;
	317	char *version;
	318	void *priv;
	319	union {
	320	struct sr_usb_device_instance *usb;
	321	struct sr_serial_device_instance *serial;
	322	};
	323	};
	324
	325	/* sr_device_instance types */
	326	enum {
	327	SR_USB_INSTANCE,
	328	SR_SERIAL_INSTANCE,
	329	};
	330
	331	#ifdef HAVE_LIBUSB_1_0
	332	struct sr_usb_device_instance {
	333	uint8_t bus;
	334	uint8_t address;
	335	struct libusb_device_handle *devhdl;
	336	};
	337	#endif
	338
	339	struct sr_serial_device_instance {
	340	char *port;
	341	int fd;
	342	};
	343
	344	/* Device instance status */
	345	enum {
	346	SR_ST_NOT_FOUND,
	347	/* Found, but still booting */
	348	SR_ST_INITIALIZING,
	349	/* Live, but not in use */
	350	SR_ST_INACTIVE,
	351	/* Actively in use in a session */
	352	SR_ST_ACTIVE,
	353	};
	354
	355	/*
	356	* TODO: This sucks, you just kinda have to "know" the returned type.
	357	* TODO: Need a DI to return the number of trigger stages supported.
	358	*/
	359
	360	/* Device info IDs */
	361	enum {
	362	/* struct sr_device_instance for this specific device */
	363	SR_DI_INSTANCE,
	364	/* The number of probes connected to this device */
	365	SR_DI_NUM_PROBES,
	366	/* Samplerates supported by this device, (struct sr_samplerates) */
	367	SR_DI_SAMPLERATES,
	368	/* Types of trigger supported, out of "01crf" (char ) /
	369	SR_DI_TRIGGER_TYPES,
	370	/* The currently set samplerate in Hz (uint64_t) */
	371	SR_DI_CUR_SAMPLERATE,
	372	/* Supported pattern generator modes */
	373	SR_DI_PATTERNMODES,
	374	};
	375
	376	/*
	377	* A device supports either a range of samplerates with steps of a given
	378	* granularity, or is limited to a set of defined samplerates. Use either
	379	* step or list, but not both.
	380	*/
	381	struct sr_samplerates {
	382	uint64_t low;
	383	uint64_t high;
	384	uint64_t step;
	385	uint64_t *list;
	386	};
	387
	388	struct sr_device_plugin {
	389	/* Plugin-specific */
	390	char *name;
	391	char *longname;
	392	int api_version;
	393	int (init) (const char deviceinfo);
	394	void (*cleanup) (void);
	395
	396	/* Device-specific */
	397	int (*opendev) (int device_index);
	398	int (*closedev) (int device_index);
	399	void (get_device_info) (int device_index, int device_info_id);
	400	int (*get_status) (int device_index);
	401	int (get_capabilities) (void);
	402	int (set_configuration) (int device_index, int capability, void value);
	403	int (*start_acquisition) (int device_index, gpointer session_device_id);
	404	void (*stop_acquisition) (int device_index, gpointer session_device_id);
	405	};
	406
	407	struct sr_session {
	408	/* List of struct sr_device* */
	409	GSList *devices;
	410	/* List of struct analyzer* */
	411	GSList *analyzers;
	412	/* list of sr_receive_data_callback */
	413	GSList *datafeed_callbacks;
	414	GTimeVal starttime;
	415	gboolean running;
	416	};
	417
	418	#include "sigrok-proto.h"
	419
	420	#ifdef __cplusplus
	421	}
	422	#endif
	423
	424	#endif