[libsigrok.git] / output / analog.c

/*
 * This file is part of the sigrok 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 <stdlib.h>
#include <string.h>
#include <glib.h>
#include "config.h"
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include <math.h>

struct context {
	int num_enabled_probes;
	GPtrArray *probelist;
	GString *out;
};


static int init(struct sr_output *o)
{
	struct context *ctx;
	struct sr_probe *probe;
	GSList *l;

	sr_spew("output/analog: initializing");
	if (!o || !o->sdi)
		return SR_ERR_ARG;

	if (!(ctx = g_try_malloc0(sizeof(struct context))))
		return SR_ERR_MALLOC;
	o->internal = ctx;

	/* Get the number of probes and their names. */
	ctx->probelist = g_ptr_array_new();
	for (l = o->sdi->probes; l; l = l->next) {
		probe = l->data;
		if (!probe || !probe->enabled)
			continue;
		g_ptr_array_add(ctx->probelist, probe->name);
		ctx->num_enabled_probes++;
	}

	ctx->out = g_string_sized_new(512);

	return SR_OK;
}

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

	if (value > 1000000000L)
		g_string_append_printf(out, "%f G%s", value / 1000000000L, unitstr);
	else if (value > 1000000)
		g_string_append_printf(out, "%f M%s", value / 1000000, unitstr);
	else if (value > 1000)
		g_string_append_printf(out, "%f k%s", value / 1000, unitstr);
	else if (value < 0.000000000001)
		g_string_append_printf(out, "%f p%s", value * 1000000000000, unitstr);
	else if (value < 0.000000001)
		g_string_append_printf(out, "%f n%s", value * 1000000000, unitstr);
	else if (value < 0.000001)
		g_string_append_printf(out, "%f u%s", value * 1000000, unitstr);
	else if (value < 0.001)
		g_string_append_printf(out, "%f m%s", value * 1000, unitstr);
	else
		g_string_append_printf(out, "%f %s", value, unitstr);

}

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;
	}
	if (mqflags & SR_MQFLAG_AC)
		g_string_append_printf(out, " AC");
	else if (mqflags & SR_MQFLAG_DC)
		g_string_append_printf(out, " DC");
	g_string_append_c(out, '\n');

}

static GString *recv(struct sr_output *o, const struct sr_dev_inst *sdi,
		struct sr_datafeed_packet *packet)
{
	struct sr_datafeed_analog *analog;
	struct context *ctx;
	float *fdata;
	int i, j;

	if (!o || !o->sdi)
		return NULL;
	ctx = o->internal;

	g_string_set_size(ctx->out, 0);
	switch (packet->type) {
	case SR_DF_HEADER:
		break;
	case SR_DF_FRAME_BEGIN:
		g_string_append_printf(ctx->out, "FRAME-BEGIN\n");
		break;
	case SR_DF_FRAME_END:
		g_string_append_printf(ctx->out, "FRAME-END\n");
		break;
	case SR_DF_ANALOG:
		analog = packet->payload;
		fdata = (float *)analog->data;
		for (i = 0; i < analog->num_samples; i++) {
			for (j = 0; j < ctx->num_enabled_probes; j++) {
				g_string_append_printf(ctx->out, "%s: ",
						(char *)g_ptr_array_index(ctx->probelist, j));
				fancyprint(analog->unit, analog->mqflags,
						fdata[i + j], ctx->out);
			}
		}
		break;
	}

	return ctx->out;
}

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

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

	g_ptr_array_free(ctx->probelist, 1);
	g_string_free(ctx->out, 1);
	g_free(ctx);
	o->internal = NULL;

	return SR_OK;
}


SR_PRIV struct sr_output_format output_analog = {
	.id = "analog",
	.description = "Analog data",
	.df_type = SR_DF_ANALOG,
	.init = init,
	.recv = recv,
	.cleanup = cleanup
};
Commit	Line	Data
161a8a27 BV	1	/*
	2	* This file is part of the sigrok 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 <stdlib.h>
	21	#include <string.h>
	22	#include <glib.h>
	23	#include "config.h"
	24	#include "libsigrok.h"
	25	#include "libsigrok-internal.h"
	26	#include <math.h>
	27
	28	struct context {
	29	int num_enabled_probes;
	30	GPtrArray *probelist;
	31	GString *out;
	32	};
	33
	34
	35	static int init(struct sr_output *o)
	36	{
	37	struct context *ctx;
	38	struct sr_probe *probe;
	39	GSList *l;
	40
	41	sr_spew("output/analog: initializing");
	42	if (!o \|\| !o->sdi)
	43	return SR_ERR_ARG;
	44
	45	if (!(ctx = g_try_malloc0(sizeof(struct context))))
	46	return SR_ERR_MALLOC;
	47	o->internal = ctx;
	48
	49	/* Get the number of probes and their names. */
	50	ctx->probelist = g_ptr_array_new();
	51	for (l = o->sdi->probes; l; l = l->next) {
	52	probe = l->data;
	53	if (!probe \|\| !probe->enabled)
	54	continue;
	55	g_ptr_array_add(ctx->probelist, probe->name);
	56	ctx->num_enabled_probes++;
	57	}
	58
	59	ctx->out = g_string_sized_new(512);
	60
	61	return SR_OK;
	62	}
	63
	64	static void si_printf(float value, GString out, char unitstr)
65	{
66
67	if (value > 1000000000L)
68	g_string_append_printf(out, "%f G%s", value / 1000000000L, unitstr);
69	else if (value > 1000000)
70	g_string_append_printf(out, "%f M%s", value / 1000000, unitstr);
71	else if (value > 1000)
72	g_string_append_printf(out, "%f k%s", value / 1000, unitstr);
73	else if (value < 0.000000000001)
74	g_string_append_printf(out, "%f p%s", value * 1000000000000, unitstr);
75	else if (value < 0.000000001)
76	g_string_append_printf(out, "%f n%s", value * 1000000000, unitstr);
77	else if (value < 0.000001)
78	g_string_append_printf(out, "%f u%s", value * 1000000, unitstr);
79	else if (value < 0.001)
80	g_string_append_printf(out, "%f m%s", value * 1000, unitstr);
81	else
82	g_string_append_printf(out, "%f %s", value, unitstr);
83
84	}
85
86	static void fancyprint(int unit, int mqflags, float value, GString *out)
87	{
88
89	switch (unit) {
90	case SR_UNIT_VOLT:
91	si_printf(value, out, "V");
92	break;
93	case SR_UNIT_AMPERE:
94	si_printf(value, out, "A");
95	break;
96	case SR_UNIT_OHM:
97	si_printf(value, out, "");
98	g_string_append_unichar(out, 0x2126);
99	break;
100	case SR_UNIT_FARAD:
101	si_printf(value, out, "F");
102	break;
103	case SR_UNIT_KELVIN:
104	si_printf(value, out, "K");
105	break;
106	case SR_UNIT_CELSIUS:
107	si_printf(value, out, "");
108	g_string_append_unichar(out, 0x00b0);
109	g_string_append_c(out, 'C');
110	break;
111	case SR_UNIT_FAHRENHEIT:
112	si_printf(value, out, "");
113	g_string_append_unichar(out, 0x00b0);
114	g_string_append_c(out, 'F');
115	break;
116	case SR_UNIT_HERTZ:
117	si_printf(value, out, "Hz");
118	break;
119	case SR_UNIT_PERCENTAGE:
120	g_string_append_printf(out, "%f%%", value);
121	break;
122	case SR_UNIT_BOOLEAN:
123	if (value > 0)
124	g_string_append_printf(out, "TRUE");
125	else
126	g_string_append_printf(out, "FALSE");
127	break;
aa839a5c BV	128	case SR_UNIT_SECOND:
	129	si_printf(value, out, "s");
	130	break;
161a8a27 BV	131	}
	132	if (mqflags & SR_MQFLAG_AC)
	133	g_string_append_printf(out, " AC");
	134	else if (mqflags & SR_MQFLAG_DC)
	135	g_string_append_printf(out, " DC");
	136	g_string_append_c(out, '\n');
	137
	138	}
	139
	140	static GString recv(struct sr_output o, const struct sr_dev_inst *sdi,
	141	struct sr_datafeed_packet *packet)
	142	{
	143	struct sr_datafeed_analog *analog;
	144	struct context *ctx;
	145	float *fdata;
	146	int i, j;
	147
	148	if (!o \|\| !o->sdi)
	149	return NULL;
	150	ctx = o->internal;
	151
	152	g_string_set_size(ctx->out, 0);
	153	switch (packet->type) {
	154	case SR_DF_HEADER:
	155	break;
	156	case SR_DF_FRAME_BEGIN:
	157	g_string_append_printf(ctx->out, "FRAME-BEGIN\n");
	158	break;
	159	case SR_DF_FRAME_END:
	160	g_string_append_printf(ctx->out, "FRAME-END\n");
	161	break;
	162	case SR_DF_ANALOG:
	163	analog = packet->payload;
	164	fdata = (float *)analog->data;
	165	for (i = 0; i < analog->num_samples; i++) {
	166	for (j = 0; j < ctx->num_enabled_probes; j++) {
	167	g_string_append_printf(ctx->out, "%s: ",
	168	(char *)g_ptr_array_index(ctx->probelist, j));
	169	fancyprint(analog->unit, analog->mqflags,
	170	fdata[i + j], ctx->out);
	171	}
	172	}
	173	break;
	174	}
	175
	176	return ctx->out;
	177	}
	178
	179	static int cleanup(struct sr_output *o)
	180	{
	181	struct context *ctx;
	182
	183	if (!o \|\| !o->sdi)
	184	return SR_ERR_ARG;
	185	ctx = o->internal;
	186
	187	g_ptr_array_free(ctx->probelist, 1);
	188	g_string_free(ctx->out, 1);
	189	g_free(ctx);
	190	o->internal = NULL;
	191
	192	return SR_OK;
	193	}
	194
195
196	SR_PRIV struct sr_output_format output_analog = {
197	.id = "analog",
198	.description = "Analog data",
199	.df_type = SR_DF_ANALOG,
200	.init = init,
201	.recv = recv,
202	.cleanup = cleanup
203	};