[libsigrok.git] / output / float.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 "libsigrok.h"
#include "libsigrok-internal.h"

struct context {
	unsigned int num_enabled_probes;
	GPtrArray *probelist;
};

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

	if (!o)
		return SR_ERR_ARG;

	if (!o->sdi)
		return SR_ERR_ARG;

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

	if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
		sr_err("output/float: Context malloc failed.");
		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++;
	}

	return SR_OK;
}

static int event(struct sr_output *o, int event_type, uint8_t **data_out,
		 uint64_t *length_out)
{
	struct context *ctx;

	if (!o)
		return SR_ERR_ARG;

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

	if (!data_out)
		return SR_ERR_ARG;

	switch (event_type) {
	case SR_DF_FRAME_BEGIN:
		*data_out = (uint8_t *)g_strdup("FRAME-BEGIN\n");
		*length_out = 12;
		break;
	case SR_DF_FRAME_END:
		*data_out = (uint8_t *)g_strdup("FRAME-END\n");
		*length_out = 10;
		break;
	case SR_DF_END:
		*data_out = NULL;
		*length_out = 0;
		g_ptr_array_free(ctx->probelist, TRUE);
		g_free(o->internal);
		o->internal = NULL;
		break;
	default:
		/* Ignore everything else. */
		*data_out = NULL;
		*length_out = 0;
		break;
	}

	return SR_OK;
}

static int data(struct sr_output *o, const uint8_t *data_in,
		uint64_t length_in, uint8_t **data_out, uint64_t *length_out)
{
	struct context *ctx;
	GString *outstr;
	float *fdata;
	uint64_t max, i;
	unsigned int j;

	if (!o)
		return SR_ERR_ARG;

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

	if (!data_in || !data_out)
		return SR_ERR_ARG;

	outstr = g_string_sized_new(512);

	fdata = (float *)data_in;
	max = length_in / sizeof(float);
	for (i = 0; i < max;) {
		for (j = 0; j < ctx->num_enabled_probes; j++) {
			g_string_append_printf(outstr, "%s: %.12f\n",
					(char *)g_ptr_array_index(ctx->probelist, j),
					fdata[i++]);
		}
	}

	*data_out = (uint8_t *)outstr->str;
	*length_out = outstr->len;
	g_string_free(outstr, FALSE);

	return SR_OK;
}

SR_PRIV struct sr_output_format output_float = {
	.id = "float",
	.description = "Floating point",
	.df_type = SR_DF_ANALOG,
	.init = init,
	.data = data,
	.event = event,
};
Commit	Line	Data
d27e406e 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>
45c59c8b BV	23	#include "libsigrok.h"
45c59c8b BV	24	#include "libsigrok-internal.h"
d27e406e BV	25
	26	struct context {
	27	unsigned int num_enabled_probes;
	28	GPtrArray *probelist;
	29	};
	30
	31	static int init(struct sr_output *o)
	32	{
	33	struct context *ctx;
	34	struct sr_probe *probe;
	35	GSList *l;
	36
	37	if (!o)
	38	return SR_ERR_ARG;
	39
5c3c1241	40	if (!o->sdi)
d27e406e BV	41	return SR_ERR_ARG;
d27e406e BV	42
5c3c1241	43	if (!o->sdi->driver)
d27e406e BV	44	return SR_ERR_ARG;
d27e406e BV	45
886a52b6 UH	46	if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
886a52b6 UH	47	sr_err("output/float: Context malloc failed.");
d27e406e	48	return SR_ERR_MALLOC;
886a52b6	49	}
d27e406e BV	50
	51	o->internal = ctx;
	52
	53	/* Get the number of probes and their names. */
	54	ctx->probelist = g_ptr_array_new();
5c3c1241	55	for (l = o->sdi->probes; l; l = l->next) {
d27e406e BV	56	probe = l->data;
	57	if (!probe \|\| !probe->enabled)
	58	continue;
	59	g_ptr_array_add(ctx->probelist, probe->name);
	60	ctx->num_enabled_probes++;
	61	}
	62
	63	return SR_OK;
	64	}
	65
	66	static int event(struct sr_output o, int event_type, uint8_t *data_out,
	67	uint64_t *length_out)
	68	{
	69	struct context *ctx;
	70
	71	if (!o)
	72	return SR_ERR_ARG;
	73
	74	if (!(ctx = o->internal))
	75	return SR_ERR_ARG;
	76
	77	if (!data_out)
	78	return SR_ERR_ARG;
	79
	80	switch (event_type) {
	81	case SR_DF_FRAME_BEGIN:
	82	data_out = (uint8_t )g_strdup("FRAME-BEGIN\n");
	83	*length_out = 12;
	84	break;
	85	case SR_DF_FRAME_END:
	86	data_out = (uint8_t )g_strdup("FRAME-END\n");
	87	*length_out = 10;
	88	break;
	89	case SR_DF_END:
	90	*data_out = NULL;
	91	*length_out = 0;
	92	g_ptr_array_free(ctx->probelist, TRUE);
	93	g_free(o->internal);
	94	o->internal = NULL;
	95	break;
	96	default:
	97	/* Ignore everything else. */
	98	*data_out = NULL;
	99	*length_out = 0;
	100	break;
	101	}
	102
	103	return SR_OK;
	104	}
	105
	106	static int data(struct sr_output o, const uint8_t data_in,
	107	uint64_t length_in, uint8_t *data_out, uint64_t length_out)
	108	{
	109	struct context *ctx;
	110	GString *outstr;
	111	float *fdata;
	112	uint64_t max, i;
	113	unsigned int j;
	114
	115	if (!o)
	116	return SR_ERR_ARG;
	117
	118	if (!(ctx = o->internal))
	119	return SR_ERR_ARG;
120
121	if (!data_in \|\| !data_out)
122	return SR_ERR_ARG;
123
124	outstr = g_string_sized_new(512);
125
126	fdata = (float *)data_in;
127	max = length_in / sizeof(float);
128	for (i = 0; i < max;) {
129	for (j = 0; j < ctx->num_enabled_probes; j++) {
40578aa4	130	g_string_append_printf(outstr, "%s: %.12f\n",
d27e406e BV	131	(char *)g_ptr_array_index(ctx->probelist, j),
	132	fdata[i++]);
	133	}
	134	}
	135
	136	data_out = (uint8_t )outstr->str;
	137	*length_out = outstr->len;
	138	g_string_free(outstr, FALSE);
	139
	140	return SR_OK;
	141	}
	142
	143	SR_PRIV struct sr_output_format output_float = {
	144	.id = "float",
	145	.description = "Floating point",
	146	.df_type = SR_DF_ANALOG,
	147	.init = init,
	148	.data = data,
	149	.event = event,
	150	};