[libsigrok.git] / src / output / analog.c

/*
 * This file is part of the libsigrok project.
 *
 * 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 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/>.
 */

#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <glib.h>
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"

#define LOG_PREFIX "output/analog"

struct context {
	int num_enabled_channels;
	GPtrArray *channellist;
	int digits;
	float *fdata;
};

enum {
	DIGITS_ALL,
	DIGITS_SPEC,
};

static int init(struct sr_output *o, GHashTable *options)
{
	struct context *ctx;
	struct sr_channel *ch;
	GSList *l;
	const char *s;

	if (!o || !o->sdi)
		return SR_ERR_ARG;

	o->priv = ctx = g_malloc0(sizeof(struct context));
	s = g_variant_get_string(g_hash_table_lookup(options, "digits"), NULL);
	if (!strcmp(s, "all"))
		ctx->digits = DIGITS_ALL;
	else
		ctx->digits = DIGITS_SPEC;

	/* Get the number of channels and their names. */
	ctx->channellist = g_ptr_array_new();
	for (l = o->sdi->channels; l; l = l->next) {
		ch = l->data;
		if (!ch || !ch->enabled)
			continue;
		g_ptr_array_add(ctx->channellist, ch->name);
		ctx->num_enabled_channels++;
	}
	ctx->fdata = NULL;

	return SR_OK;
}

static void si_printf(float value, GString *out, const char *unitstr)
{
	float v;

	if (signbit(value))
		v = -(value);
	else
		v = value;

	if (v < 1e-12 || v > 1e+12)
		g_string_append_printf(out, "%f %s", value, unitstr);
	else if (v > 1e+9)
		g_string_append_printf(out, "%f G%s", value / 1e+9, unitstr);
	else if (v > 1e+6)
		g_string_append_printf(out, "%f M%s", value / 1e+6, unitstr);
	else if (v > 1e+3)
		g_string_append_printf(out, "%f k%s", value / 1e+3, unitstr);
	else if (v < 1e-9)
		g_string_append_printf(out, "%f n%s", value * 1e+9, unitstr);
	else if (v < 1e-6)
		g_string_append_printf(out, "%f u%s", value * 1e+6, unitstr);
	else if (v < 1e-3)
		g_string_append_printf(out, "%f m%s", value * 1e+3, unitstr);
	else
		g_string_append_printf(out, "%f %s", value, unitstr);

}

/* Please use the same order as in enum sr_unit (libsigrok.h). */
static void fancyprint(int unit, int mqflags, float value, GString *out)
{
	switch (unit) {
	case SR_UNIT_VOLT:
		si_printf(value, out, "V");
		break;
	case SR_UNIT_AMPERE:
		si_printf(value, out, "A");
		break;
	case SR_UNIT_OHM:
		si_printf(value, out, "");
		g_string_append_unichar(out, 0x2126);
		break;
	case SR_UNIT_FARAD:
		si_printf(value, out, "F");
		break;
	case SR_UNIT_KELVIN:
		si_printf(value, out, "K");
		break;
	case SR_UNIT_CELSIUS:
		si_printf(value, out, "");
		g_string_append_unichar(out, 0x00b0);
		g_string_append_c(out, 'C');
		break;
	case SR_UNIT_FAHRENHEIT:
		si_printf(value, out, "");
		g_string_append_unichar(out, 0x00b0);
		g_string_append_c(out, 'F');
		break;
	case SR_UNIT_HERTZ:
		si_printf(value, out, "Hz");
		break;
	case SR_UNIT_PERCENTAGE:
		g_string_append_printf(out, "%f %%", value);
		break;
	case SR_UNIT_BOOLEAN:
		if (value > 0)
			g_string_append_printf(out, "TRUE");
		else
			g_string_append_printf(out, "FALSE");
		break;
	case SR_UNIT_SECOND:
		si_printf(value, out, "s");
		break;
	case SR_UNIT_SIEMENS:
		si_printf(value, out, "S");
		break;
	case SR_UNIT_DECIBEL_MW:
		si_printf(value, out, "dBu");
		break;
	case SR_UNIT_DECIBEL_VOLT:
		si_printf(value, out, "dBV");
		break;
	case SR_UNIT_UNITLESS:
		si_printf(value, out, "");
		break;
	case SR_UNIT_DECIBEL_SPL:
		if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A)
			si_printf(value, out, "dB(A)");
		else if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_C)
			si_printf(value, out, "dB(C)");
		else if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_Z)
			si_printf(value, out, "dB(Z)");
		else
			/* No frequency weighting, or non-standard "flat" */
			si_printf(value, out, "dB(SPL)");
		if (mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_S)
			g_string_append(out, " S");
		else if (mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F)
			g_string_append(out, " F");
		if (mqflags & SR_MQFLAG_SPL_LAT)
			g_string_append(out, " LAT");
		else if (mqflags & SR_MQFLAG_SPL_PCT_OVER_ALARM)
			/* Not a standard function for SLMs, so this is
			 * a made-up notation. */
			g_string_append(out, " %oA");
		break;
	case SR_UNIT_CONCENTRATION:
		g_string_append_printf(out, "%f ppm", value * (1000 * 1000));
		break;
	case SR_UNIT_REVOLUTIONS_PER_MINUTE:
		si_printf(value, out, "RPM");
		break;
	case SR_UNIT_VOLT_AMPERE:
		si_printf(value, out, "VA");
		break;
	case SR_UNIT_WATT:
		si_printf(value, out, "W");
		break;
	case SR_UNIT_WATT_HOUR:
		si_printf(value, out, "Wh");
		break;
	case SR_UNIT_METER_SECOND:
		si_printf(value, out, "m/s");
		break;
	case SR_UNIT_HECTOPASCAL:
		si_printf(value, out, "hPa");
		break;
	case SR_UNIT_HUMIDITY_293K:
		si_printf(value, out, "%rF");
		break;
	case SR_UNIT_DEGREE:
		si_printf(value, out, "");
		g_string_append_unichar(out, 0x00b0);
		break;
	case SR_UNIT_HENRY:
		si_printf(value, out, "H");
		break;
	case SR_UNIT_GRAM:
		si_printf(value, out, "g");
		break;
	case SR_UNIT_CARAT:
		si_printf(value, out, "ct");
		break;
	case SR_UNIT_OUNCE:
		si_printf(value, out, "oz");
		break;
	case SR_UNIT_TROY_OUNCE:
		si_printf(value, out, "oz t");
		break;
	case SR_UNIT_POUND:
		si_printf(value, out, "lb");
		break;
	case SR_UNIT_PENNYWEIGHT:
		si_printf(value, out, "dwt");
		break;
	case SR_UNIT_GRAIN:
		si_printf(value, out, "gr");
		break;
	case SR_UNIT_TAEL:
		si_printf(value, out, "tael");
		break;
	case SR_UNIT_MOMME:
		si_printf(value, out, "momme");
		break;
	case SR_UNIT_TOLA:
		si_printf(value, out, "tola");
		break;
	case SR_UNIT_PIECE:
		si_printf(value, out, "pcs");
		break;
	default:
		si_printf(value, out, "");
		break;
	}

	/* Please use the same order as in enum sr_mqflag (libsigrok.h). */
	if (mqflags & SR_MQFLAG_AC)
		g_string_append_printf(out, " AC");
	if (mqflags & SR_MQFLAG_DC)
		g_string_append_printf(out, " DC");
	if (mqflags & SR_MQFLAG_RMS)
		g_string_append_printf(out, " RMS");
	if (mqflags & SR_MQFLAG_DIODE)
		g_string_append_printf(out, " DIODE");
	if (mqflags & SR_MQFLAG_HOLD)
		g_string_append_printf(out, " HOLD");
	if (mqflags & SR_MQFLAG_MAX)
		g_string_append_printf(out, " MAX");
	if (mqflags & SR_MQFLAG_MIN)
		g_string_append_printf(out, " MIN");
	if (mqflags & SR_MQFLAG_AUTORANGE)
		g_string_append_printf(out, " AUTO");
	if (mqflags & SR_MQFLAG_RELATIVE)
		g_string_append_printf(out, " REL");
	/* Note: SR_MQFLAG_SPL_* is handled above. */
	if (mqflags & SR_MQFLAG_DURATION)
		g_string_append_printf(out, " DURATION");
	if (mqflags & SR_MQFLAG_AVG)
		g_string_append_printf(out, " AVG");
	if (mqflags & SR_MQFLAG_REFERENCE)
		g_string_append_printf(out, " REF");
	if (mqflags & SR_MQFLAG_UNSTABLE)
		g_string_append_printf(out, " UNSTABLE");
	if (mqflags & SR_MQFLAG_FOUR_WIRE)
		g_string_append_printf(out, " 4-WIRE");
	g_string_append_c(out, '\n');
}

static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet,
		GString **out)
{
	struct context *ctx;
	const struct sr_datafeed_analog_old *analog_old;
	const struct sr_datafeed_analog *analog;
	struct sr_channel *ch;
	GSList *l;
	float *fdata;
	unsigned int i;
	int num_channels, c, ret, si, digits;
	char *number, *suffix;

	*out = NULL;
	if (!o || !o->sdi)
		return SR_ERR_ARG;
	ctx = o->priv;

	switch (packet->type) {
	case SR_DF_FRAME_BEGIN:
		*out = g_string_new("FRAME-BEGIN\n");
		break;
	case SR_DF_FRAME_END:
		*out = g_string_new("FRAME-END\n");
		break;
	case SR_DF_ANALOG_OLD:
		analog_old = packet->payload;
		fdata = (float *)analog_old->data;
		*out = g_string_sized_new(512);
		num_channels = g_slist_length(analog_old->channels);
		for (si = 0; si < analog_old->num_samples; si++) {
			for (l = analog_old->channels, c = 0; l; l = l->next, c++) {
				ch = l->data;
				g_string_append_printf(*out, "%s: ", ch->name);
				fancyprint(analog_old->unit, analog_old->mqflags,
						fdata[si * num_channels + c], *out);
			}
		}
		break;
	case SR_DF_ANALOG:
		analog = packet->payload;
		num_channels = g_slist_length(analog->meaning->channels);
		if (!(fdata = g_try_realloc(ctx->fdata,
						analog->num_samples * num_channels * sizeof(float))))
			return SR_ERR_MALLOC;
		ctx->fdata = fdata;
		if ((ret = sr_analog_to_float(analog, fdata)) != SR_OK)
			return ret;
		*out = g_string_sized_new(512);
		if (analog->encoding->is_digits_decimal) {
			if (ctx->digits == DIGITS_ALL)
				digits = analog->encoding->digits;
			else
				digits = analog->spec->spec_digits;
		} else {
			/* TODO we don't know how to print by number of bits yet. */
			digits = 6;
		}
		sr_analog_unit_to_string(analog, &suffix);
		for (i = 0; i < analog->num_samples; i++) {
			for (l = analog->meaning->channels, c = 0; l; l = l->next, c++) {
				ch = l->data;
				g_string_append_printf(*out, "%s: ", ch->name);
				number = g_strdup_printf("%.*f", digits,
						fdata[i * num_channels + c]);
				g_string_append(*out, number);
				g_free(number);
				g_string_append(*out, " ");
				g_string_append(*out, suffix);
				g_string_append(*out, "\n");
			}
		}
		g_free(suffix);
		break;
	}

	return SR_OK;
}

static struct sr_option options[] = {
	{ "digits", "Digits", "Digits to show", NULL, NULL },
	ALL_ZERO
};

static const struct sr_option *get_options(void)
{
	if (!options[0].def) {
		options[0].def = g_variant_ref_sink(g_variant_new_string("all"));
		options[0].values = g_slist_append(options[0].values,
				g_variant_ref_sink(g_variant_new_string("all")));
		options[0].values = g_slist_append(options[0].values,
				g_variant_ref_sink(g_variant_new_string("spec")));
	}

	return options;
}

static int cleanup(struct sr_output *o)
{
	struct context *ctx;

	if (!o || !o->sdi)
		return SR_ERR_ARG;
	ctx = o->priv;

	g_ptr_array_free(ctx->channellist, 1);
	g_variant_unref(options[0].def);
	g_slist_free_full(options[0].values, (GDestroyNotify)g_variant_unref);
	g_free(ctx->fdata);
	g_free(ctx);
	o->priv = NULL;

	return SR_OK;
}

SR_PRIV struct sr_output_module output_analog = {
	.id = "analog",
	.name = "Analog",
	.desc = "Analog data and types",
	.exts = NULL,
	.flags = 0,
	.options = get_options,
	.init = init,
	.receive = receive,
	.cleanup = cleanup
};
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 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	#include <config.h>
	21	#include <stdlib.h>
	22	#include <string.h>
	23	#include <math.h>
	24	#include <glib.h>
	25	#include <libsigrok/libsigrok.h>
	26	#include "libsigrok-internal.h"
	27
	28	#define LOG_PREFIX "output/analog"
	29
	30	struct context {
	31	int num_enabled_channels;
	32	GPtrArray *channellist;
	33	int digits;
	34	float *fdata;
	35	};
	36
	37	enum {
	38	DIGITS_ALL,
	39	DIGITS_SPEC,
	40	};
	41
	42	static int init(struct sr_output o, GHashTable options)
	43	{
	44	struct context *ctx;
	45	struct sr_channel *ch;
	46	GSList *l;
	47	const char *s;
	48
	49	if (!o \|\| !o->sdi)
	50	return SR_ERR_ARG;
	51
	52	o->priv = ctx = g_malloc0(sizeof(struct context));
	53	s = g_variant_get_string(g_hash_table_lookup(options, "digits"), NULL);
	54	if (!strcmp(s, "all"))
	55	ctx->digits = DIGITS_ALL;
	56	else
	57	ctx->digits = DIGITS_SPEC;
	58
	59	/* Get the number of channels and their names. */
	60	ctx->channellist = g_ptr_array_new();
	61	for (l = o->sdi->channels; l; l = l->next) {
	62	ch = l->data;
	63	if (!ch \|\| !ch->enabled)
	64	continue;
	65	g_ptr_array_add(ctx->channellist, ch->name);
	66	ctx->num_enabled_channels++;
	67	}
	68	ctx->fdata = NULL;
	69
	70	return SR_OK;
	71	}
	72
	73	static void si_printf(float value, GString out, const char unitstr)
	74	{
	75	float v;
	76
	77	if (signbit(value))
	78	v = -(value);
	79	else
	80	v = value;
	81
	82	if (v < 1e-12 \|\| v > 1e+12)
	83	g_string_append_printf(out, "%f %s", value, unitstr);
	84	else if (v > 1e+9)
	85	g_string_append_printf(out, "%f G%s", value / 1e+9, unitstr);
	86	else if (v > 1e+6)
	87	g_string_append_printf(out, "%f M%s", value / 1e+6, unitstr);
	88	else if (v > 1e+3)
	89	g_string_append_printf(out, "%f k%s", value / 1e+3, unitstr);
	90	else if (v < 1e-9)
	91	g_string_append_printf(out, "%f n%s", value * 1e+9, unitstr);
	92	else if (v < 1e-6)
	93	g_string_append_printf(out, "%f u%s", value * 1e+6, unitstr);
	94	else if (v < 1e-3)
	95	g_string_append_printf(out, "%f m%s", value * 1e+3, unitstr);
	96	else
	97	g_string_append_printf(out, "%f %s", value, unitstr);
	98
	99	}
	100
	101	/* Please use the same order as in enum sr_unit (libsigrok.h). */
	102	static void fancyprint(int unit, int mqflags, float value, GString *out)
	103	{
	104	switch (unit) {
	105	case SR_UNIT_VOLT:
	106	si_printf(value, out, "V");
	107	break;
	108	case SR_UNIT_AMPERE:
	109	si_printf(value, out, "A");
	110	break;
	111	case SR_UNIT_OHM:
	112	si_printf(value, out, "");
	113	g_string_append_unichar(out, 0x2126);
	114	break;
	115	case SR_UNIT_FARAD:
	116	si_printf(value, out, "F");
	117	break;
	118	case SR_UNIT_KELVIN:
	119	si_printf(value, out, "K");
	120	break;
	121	case SR_UNIT_CELSIUS:
	122	si_printf(value, out, "");
	123	g_string_append_unichar(out, 0x00b0);
	124	g_string_append_c(out, 'C');
	125	break;
	126	case SR_UNIT_FAHRENHEIT:
	127	si_printf(value, out, "");
	128	g_string_append_unichar(out, 0x00b0);
	129	g_string_append_c(out, 'F');
	130	break;
	131	case SR_UNIT_HERTZ:
	132	si_printf(value, out, "Hz");
	133	break;
	134	case SR_UNIT_PERCENTAGE:
	135	g_string_append_printf(out, "%f %%", value);
	136	break;
	137	case SR_UNIT_BOOLEAN:
	138	if (value > 0)
	139	g_string_append_printf(out, "TRUE");
	140	else
	141	g_string_append_printf(out, "FALSE");
	142	break;
	143	case SR_UNIT_SECOND:
	144	si_printf(value, out, "s");
	145	break;
	146	case SR_UNIT_SIEMENS:
	147	si_printf(value, out, "S");
	148	break;
	149	case SR_UNIT_DECIBEL_MW:
	150	si_printf(value, out, "dBu");
	151	break;
	152	case SR_UNIT_DECIBEL_VOLT:
	153	si_printf(value, out, "dBV");
	154	break;
	155	case SR_UNIT_UNITLESS:
	156	si_printf(value, out, "");
	157	break;
	158	case SR_UNIT_DECIBEL_SPL:
	159	if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A)
	160	si_printf(value, out, "dB(A)");
	161	else if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_C)
	162	si_printf(value, out, "dB(C)");
	163	else if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_Z)
	164	si_printf(value, out, "dB(Z)");
	165	else
	166	/* No frequency weighting, or non-standard "flat" */
	167	si_printf(value, out, "dB(SPL)");
	168	if (mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_S)
	169	g_string_append(out, " S");
	170	else if (mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F)
	171	g_string_append(out, " F");
	172	if (mqflags & SR_MQFLAG_SPL_LAT)
	173	g_string_append(out, " LAT");
	174	else if (mqflags & SR_MQFLAG_SPL_PCT_OVER_ALARM)
	175	/* Not a standard function for SLMs, so this is
	176	* a made-up notation. */
	177	g_string_append(out, " %oA");
	178	break;
	179	case SR_UNIT_CONCENTRATION:
	180	g_string_append_printf(out, "%f ppm", value * (1000 * 1000));
	181	break;
	182	case SR_UNIT_REVOLUTIONS_PER_MINUTE:
	183	si_printf(value, out, "RPM");
	184	break;
	185	case SR_UNIT_VOLT_AMPERE:
	186	si_printf(value, out, "VA");
	187	break;
	188	case SR_UNIT_WATT:
	189	si_printf(value, out, "W");
	190	break;
	191	case SR_UNIT_WATT_HOUR:
	192	si_printf(value, out, "Wh");
	193	break;
	194	case SR_UNIT_METER_SECOND:
	195	si_printf(value, out, "m/s");
	196	break;
	197	case SR_UNIT_HECTOPASCAL:
	198	si_printf(value, out, "hPa");
	199	break;
	200	case SR_UNIT_HUMIDITY_293K:
	201	si_printf(value, out, "%rF");
	202	break;
	203	case SR_UNIT_DEGREE:
	204	si_printf(value, out, "");
	205	g_string_append_unichar(out, 0x00b0);
	206	break;
	207	case SR_UNIT_HENRY:
	208	si_printf(value, out, "H");
	209	break;
	210	case SR_UNIT_GRAM:
	211	si_printf(value, out, "g");
	212	break;
	213	case SR_UNIT_CARAT:
	214	si_printf(value, out, "ct");
	215	break;
	216	case SR_UNIT_OUNCE:
	217	si_printf(value, out, "oz");
	218	break;
	219	case SR_UNIT_TROY_OUNCE:
	220	si_printf(value, out, "oz t");
	221	break;
	222	case SR_UNIT_POUND:
	223	si_printf(value, out, "lb");
	224	break;
	225	case SR_UNIT_PENNYWEIGHT:
	226	si_printf(value, out, "dwt");
	227	break;
	228	case SR_UNIT_GRAIN:
	229	si_printf(value, out, "gr");
	230	break;
	231	case SR_UNIT_TAEL:
	232	si_printf(value, out, "tael");
	233	break;
	234	case SR_UNIT_MOMME:
	235	si_printf(value, out, "momme");
	236	break;
	237	case SR_UNIT_TOLA:
	238	si_printf(value, out, "tola");
	239	break;
	240	case SR_UNIT_PIECE:
	241	si_printf(value, out, "pcs");
	242	break;
	243	default:
	244	si_printf(value, out, "");
	245	break;
	246	}
	247
	248	/* Please use the same order as in enum sr_mqflag (libsigrok.h). */
	249	if (mqflags & SR_MQFLAG_AC)
	250	g_string_append_printf(out, " AC");
	251	if (mqflags & SR_MQFLAG_DC)
	252	g_string_append_printf(out, " DC");
	253	if (mqflags & SR_MQFLAG_RMS)
	254	g_string_append_printf(out, " RMS");
	255	if (mqflags & SR_MQFLAG_DIODE)
	256	g_string_append_printf(out, " DIODE");
	257	if (mqflags & SR_MQFLAG_HOLD)
	258	g_string_append_printf(out, " HOLD");
	259	if (mqflags & SR_MQFLAG_MAX)
	260	g_string_append_printf(out, " MAX");
	261	if (mqflags & SR_MQFLAG_MIN)
	262	g_string_append_printf(out, " MIN");
	263	if (mqflags & SR_MQFLAG_AUTORANGE)
	264	g_string_append_printf(out, " AUTO");
	265	if (mqflags & SR_MQFLAG_RELATIVE)
	266	g_string_append_printf(out, " REL");
	267	/* Note: SR_MQFLAG_SPL_* is handled above. */
	268	if (mqflags & SR_MQFLAG_DURATION)
	269	g_string_append_printf(out, " DURATION");
	270	if (mqflags & SR_MQFLAG_AVG)
	271	g_string_append_printf(out, " AVG");
	272	if (mqflags & SR_MQFLAG_REFERENCE)
	273	g_string_append_printf(out, " REF");
	274	if (mqflags & SR_MQFLAG_UNSTABLE)
	275	g_string_append_printf(out, " UNSTABLE");
	276	if (mqflags & SR_MQFLAG_FOUR_WIRE)
	277	g_string_append_printf(out, " 4-WIRE");
	278	g_string_append_c(out, '\n');
	279	}
	280
	281	static int receive(const struct sr_output o, const struct sr_datafeed_packet packet,
	282	GString **out)
	283	{
	284	struct context *ctx;
	285	const struct sr_datafeed_analog_old *analog_old;
	286	const struct sr_datafeed_analog *analog;
	287	struct sr_channel *ch;
	288	GSList *l;
	289	float *fdata;
	290	unsigned int i;
	291	int num_channels, c, ret, si, digits;
	292	char number, suffix;
	293
	294	*out = NULL;
	295	if (!o \|\| !o->sdi)
	296	return SR_ERR_ARG;
	297	ctx = o->priv;
	298
	299	switch (packet->type) {
	300	case SR_DF_FRAME_BEGIN:
	301	*out = g_string_new("FRAME-BEGIN\n");
	302	break;
	303	case SR_DF_FRAME_END:
	304	*out = g_string_new("FRAME-END\n");
	305	break;
	306	case SR_DF_ANALOG_OLD:
	307	analog_old = packet->payload;
	308	fdata = (float *)analog_old->data;
	309	*out = g_string_sized_new(512);
	310	num_channels = g_slist_length(analog_old->channels);
	311	for (si = 0; si < analog_old->num_samples; si++) {
	312	for (l = analog_old->channels, c = 0; l; l = l->next, c++) {
	313	ch = l->data;
	314	g_string_append_printf(*out, "%s: ", ch->name);
	315	fancyprint(analog_old->unit, analog_old->mqflags,
	316	fdata[si * num_channels + c], *out);
	317	}
	318	}
	319	break;
	320	case SR_DF_ANALOG:
	321	analog = packet->payload;
	322	num_channels = g_slist_length(analog->meaning->channels);
	323	if (!(fdata = g_try_realloc(ctx->fdata,
	324	analog->num_samples * num_channels * sizeof(float))))
	325	return SR_ERR_MALLOC;
	326	ctx->fdata = fdata;
	327	if ((ret = sr_analog_to_float(analog, fdata)) != SR_OK)
	328	return ret;
	329	*out = g_string_sized_new(512);
	330	if (analog->encoding->is_digits_decimal) {
	331	if (ctx->digits == DIGITS_ALL)
	332	digits = analog->encoding->digits;
	333	else
	334	digits = analog->spec->spec_digits;
	335	} else {
	336	/* TODO we don't know how to print by number of bits yet. */
	337	digits = 6;
	338	}
	339	sr_analog_unit_to_string(analog, &suffix);
	340	for (i = 0; i < analog->num_samples; i++) {
	341	for (l = analog->meaning->channels, c = 0; l; l = l->next, c++) {
	342	ch = l->data;
	343	g_string_append_printf(*out, "%s: ", ch->name);
	344	number = g_strdup_printf("%.*f", digits,
	345	fdata[i * num_channels + c]);
	346	g_string_append(*out, number);
	347	g_free(number);
	348	g_string_append(*out, " ");
	349	g_string_append(*out, suffix);
	350	g_string_append(*out, "\n");
	351	}
	352	}
	353	g_free(suffix);
	354	break;
	355	}
	356
	357	return SR_OK;
	358	}
	359
	360	static struct sr_option options[] = {
	361	{ "digits", "Digits", "Digits to show", NULL, NULL },
	362	ALL_ZERO
	363	};
	364
	365	static const struct sr_option *get_options(void)
	366	{
	367	if (!options[0].def) {
	368	options[0].def = g_variant_ref_sink(g_variant_new_string("all"));
	369	options[0].values = g_slist_append(options[0].values,
	370	g_variant_ref_sink(g_variant_new_string("all")));
	371	options[0].values = g_slist_append(options[0].values,
	372	g_variant_ref_sink(g_variant_new_string("spec")));
	373	}
	374
	375	return options;
	376	}
	377
	378	static int cleanup(struct sr_output *o)
	379	{
	380	struct context *ctx;
	381
	382	if (!o \|\| !o->sdi)
	383	return SR_ERR_ARG;
	384	ctx = o->priv;
	385
	386	g_ptr_array_free(ctx->channellist, 1);
	387	g_variant_unref(options[0].def);
	388	g_slist_free_full(options[0].values, (GDestroyNotify)g_variant_unref);
	389	g_free(ctx->fdata);
	390	g_free(ctx);
	391	o->priv = NULL;
	392
	393	return SR_OK;
	394	}
	395
	396	SR_PRIV struct sr_output_module output_analog = {
	397	.id = "analog",
	398	.name = "Analog",
	399	.desc = "Analog data and types",
	400	.exts = NULL,
	401	.flags = 0,
	402	.options = get_options,
	403	.init = init,
	404	.receive = receive,
	405	.cleanup = cleanup
	406	};