[libsigrok.git] / output / gnuplot.c

/*
 * This file is part of the sigrok project.
 *
 * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include "config.h"
#include "sigrok.h"
#include "sigrok-internal.h"

struct context {
	unsigned int num_enabled_probes;
	unsigned int unitsize;
	char *probelist[SR_MAX_NUM_PROBES + 1];
	char *header;
};

#define MAX_HEADER_LEN \
	(1024 + (SR_MAX_NUM_PROBES * (SR_MAX_PROBENAME_LEN + 10)))

static const char *gnuplot_header = "\
# Sample data in space-separated columns format usable by gnuplot\n\
#\n\
# Generated by: %s on %s%s\
# Period: %s\n\
#\n\
# Column\tProbe\n\
# -------------------------------------\
----------------------------------------\n\
# 0\t\tSample counter (for internal gnuplot purposes)\n%s\n";

static const char *gnuplot_header_comment = "\
# Comment: Acquisition with %d/%d probes at %s\n";

static int init(struct sr_output *o)
{
	struct context *ctx;
	struct sr_probe *probe;
	GSList *l;
	uint64_t samplerate;
	unsigned int i;
	int b, num_probes;
	char *c, *frequency_s;
	char wbuf[1000], comment[128];
	time_t t;

	if (!o) {
		sr_err("gnuplot out: %s: o was NULL", __func__);
		return SR_ERR_ARG;
	}

	if (!o->dev) {
		sr_err("gnuplot out: %s: o->dev was NULL", __func__);
		return SR_ERR_ARG;
	}

	if (!o->dev->plugin) {
		sr_err("gnuplot out: %s: o->dev->plugin was NULL", __func__);
		return SR_ERR_ARG;
	}

	if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
		sr_err("gnuplot out: %s: ctx malloc failed", __func__);
		return SR_ERR_MALLOC;
	}

	if (!(ctx->header = g_try_malloc0(MAX_HEADER_LEN + 1))) {
		sr_err("gnuplot out: %s: ctx->header malloc failed", __func__);
		g_free(ctx);
		return SR_ERR_MALLOC;
	}

	o->internal = ctx;
	ctx->num_enabled_probes = 0;
	for (l = o->dev->probes; l; l = l->next) {
		probe = l->data; /* TODO: Error checks. */
		if (!probe->enabled)
			continue;
		ctx->probelist[ctx->num_enabled_probes++] = probe->name;
	}
	ctx->probelist[ctx->num_enabled_probes] = 0;
	ctx->unitsize = (ctx->num_enabled_probes + 7) / 8;

	num_probes = g_slist_length(o->dev->probes);
	comment[0] = '\0';
	if (sr_dev_has_hwcap(o->dev, SR_HWCAP_SAMPLERATE)) {
		samplerate = *((uint64_t *) o->dev->plugin->dev_info_get(
				o->dev->plugin_index, SR_DI_CUR_SAMPLERATE));
		if (!(frequency_s = sr_samplerate_string(samplerate))) {
			sr_err("gnuplot out: %s: sr_samplerate_string failed",
			       __func__);
			g_free(ctx->header);
			g_free(ctx);
			return SR_ERR;
		}
		snprintf(comment, 127, gnuplot_header_comment,
			ctx->num_enabled_probes, num_probes, frequency_s);
		g_free(frequency_s);
	}

	/* Columns / channels */
	wbuf[0] = '\0';
	for (i = 0; i < ctx->num_enabled_probes; i++) {
		c = (char *)&wbuf + strlen((char *)&wbuf);
		sprintf(c, "# %d\t\t%s\n", i + 1, ctx->probelist[i]);
	}

	if (!(frequency_s = sr_period_string(samplerate))) {
		sr_err("gnuplot out: %s: sr_period_string failed", __func__);
		g_free(ctx->header);
		g_free(ctx);
		return SR_ERR;
	}

	t = time(NULL);
	b = snprintf(ctx->header, MAX_HEADER_LEN, gnuplot_header,
		     PACKAGE_STRING, ctime(&t), comment, frequency_s,
		     (char *)&wbuf);
	g_free(frequency_s);

	if (b < 0) {
		sr_err("gnuplot out: %s: sprintf failed", __func__);
		g_free(ctx->header);
		g_free(ctx);
		return SR_ERR;
	}

	return 0;
}

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

	if (!o) {
		sr_err("gnuplot out: %s: o was NULL", __func__);
		return SR_ERR_ARG;
	}

	if (!data_out) {
		sr_err("gnuplot out: %s: data_out was NULL", __func__);
		return SR_ERR_ARG;
	}

	if (!length_out) {
		sr_err("gnuplot out: %s: length_out was NULL", __func__);
		return SR_ERR_ARG;
	}

	ctx = o->internal;

	switch (event_type) {
	case SR_DF_TRIGGER:
		/* TODO: Can a trigger mark be in a gnuplot data file? */
		break;
	case SR_DF_END:
		g_free(o->internal);
		o->internal = NULL;
		break;
	default:
		sr_err("gnuplot out: %s: unsupported event type: %d",
		       __func__, event_type);
		break;
	}

	*data_out = NULL;
	*length_out = 0;

	return SR_OK;
}

static int data(struct sr_output *o, const char *data_in, uint64_t length_in,
		char **data_out, uint64_t *length_out)
{
	struct context *ctx;
	unsigned int max_linelen, outsize, p, curbit, i;
	uint64_t sample;
	static uint64_t samplecount = 0, old_sample = 0;
	char *outbuf, *c;

	if (!o) {
		sr_err("gnuplot out: %s: o was NULL", __func__);
		return SR_ERR_ARG;
	}

	if (!o->internal) {
		sr_err("gnuplot out: %s: o->internal was NULL", __func__);
		return SR_ERR_ARG;
	}

	if (!data_in) {
		sr_err("gnuplot out: %s: data_in was NULL", __func__);
		return SR_ERR_ARG;
	}

	if (!data_out) {
		sr_err("gnuplot out: %s: data_out was NULL", __func__);
		return SR_ERR_ARG;
	}

	if (!length_out) {
		sr_err("gnuplot out: %s: length_out was NULL", __func__);
		return SR_ERR_ARG;
	}

	ctx = o->internal;
	max_linelen = 16 + ctx->num_enabled_probes * 2;
	outsize = length_in / ctx->unitsize * max_linelen;
	if (ctx->header)
		outsize += strlen(ctx->header);

	if (!(outbuf = g_try_malloc0(outsize))) {
		sr_err("gnuplot out: %s: outbuf malloc failed", __func__);
		return SR_ERR_MALLOC;
	}

	outbuf[0] = '\0';
	if (ctx->header) {
		/* The header is still here, this must be the first packet. */
		strncpy(outbuf, ctx->header, outsize);
		g_free(ctx->header);
		ctx->header = NULL;
	}

	for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) {

		memcpy(&sample, data_in + i, ctx->unitsize);

		/*
		 * Don't output the same samples multiple times. However, make
		 * sure to output at least the first and last sample.
		 */
		if (samplecount++ != 0 && sample == old_sample) {
			if (i != (length_in - ctx->unitsize))
				continue;
		}
		old_sample = sample;

		/* The first column is a counter (needed for gnuplot). */
		c = outbuf + strlen(outbuf);
		sprintf(c, "%" PRIu64 "\t", samplecount++);

		/* The next columns are the values of all channels. */
		for (p = 0; p < ctx->num_enabled_probes; p++) {
			curbit = (sample & ((uint64_t) (1 << p))) >> p;
			c = outbuf + strlen(outbuf);
			sprintf(c, "%d ", curbit);
		}

		c = outbuf + strlen(outbuf);
		sprintf(c, "\n");
	}

	*data_out = outbuf;
	*length_out = strlen(outbuf);

	return SR_OK;
}

SR_PRIV struct sr_output_format output_gnuplot = {
	.id = "gnuplot",
	.description = "Gnuplot",
	.df_type = SR_DF_LOGIC,
	.init = init,
	.data = data,
	.event = event,
};

/* Temporarily disabled. */
#if 0
static int analog_init(struct sr_output *o)
{
	struct context *ctx;
	struct sr_probe *probe;
	GSList *l;
	uint64_t samplerate;
	unsigned int i;
	int b, num_probes;
	char *c, *frequency_s;
	char wbuf[1000], comment[128];
	time_t t;

	if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
		sr_err("gnuplot out: %s: ctx malloc failed", __func__);
		return SR_ERR_MALLOC;
	}

	if (!(ctx->header = g_try_malloc0(MAX_HEADER_LEN + 1))) {
		g_free(ctx);
		sr_err("gnuplot out: %s: ctx->header malloc failed", __func__);
		return SR_ERR_MALLOC;
	}

	o->internal = ctx;
	ctx->num_enabled_probes = 0;
	for (l = o->dev->probes; l; l = l->next) {
		probe = l->data;
		if (!probe->enabled)
			continue;
		ctx->probelist[ctx->num_enabled_probes++] = probe->name;
	}
	ctx->probelist[ctx->num_enabled_probes] = 0;
//	ctx->unitsize = (ctx->num_enabled_probes + 7) / 8;
	ctx->unitsize = sizeof(struct sr_analog_sample) +
			(ctx->num_enabled_probes * sizeof(struct sr_analog_probe));

	num_probes = g_slist_length(o->dev->probes);
	comment[0] = '\0';
	if (o->dev->plugin && sr_dev_has_hwcap(o->dev, SR_HWCAP_SAMPLERATE)) {
		samplerate = *((uint64_t *) o->dev->plugin->dev_info_get(
				o->dev->plugin_index, SR_DI_CUR_SAMPLERATE));
		if (!(frequency_s = sr_samplerate_string(samplerate))) {
			g_free(ctx->header);
			g_free(ctx);
			return SR_ERR;
		}
		snprintf(comment, 127, gnuplot_header_comment,
			ctx->num_enabled_probes, num_probes, frequency_s);
		g_free(frequency_s);
	}

	/* Columns / channels */
	wbuf[0] = '\0';
	for (i = 0; i < ctx->num_enabled_probes; i++) {
		c = (char *)&wbuf + strlen((char *)&wbuf);
		sprintf(c, "# %d\t\t%s\n", i + 1, ctx->probelist[i]);
	}

	if (!(frequency_s = sr_period_string(samplerate))) {
		g_free(ctx->header);
		g_free(ctx);
		return SR_ERR;
	}
	t = time(NULL);
	b = snprintf(ctx->header, MAX_HEADER_LEN, gnuplot_header,
		     PACKAGE_STRING, ctime(&t), comment, frequency_s,
		     (char *)&wbuf);
	g_free(frequency_s);

	if (b < 0) {
		g_free(ctx->header);
		g_free(ctx);
		return SR_ERR;
	}

	return 0;
}

static int analog_data(struct sr_output *o, char *data_in, uint64_t length_in,
		char **data_out, uint64_t *length_out)
{
	struct context *ctx;
	unsigned int max_linelen, outsize, p, /* curbit, */ i;
//	uint64_t sample;
	static uint64_t samplecount = 0;
	char *outbuf, *c;
	struct sr_analog_sample *sample;

	ctx = o->internal;
//	max_linelen = 16 + ctx->num_enabled_probes * 2;
	max_linelen = 16 + ctx->num_enabled_probes * 30;
	outsize = length_in / ctx->unitsize * max_linelen;
	if (ctx->header)
		outsize += strlen(ctx->header);

	if (!(outbuf = g_try_malloc0(outsize))) {
		sr_err("gnuplot out: %s: outbuf malloc failed", __func__);
		return SR_ERR_MALLOC;
	}

	outbuf[0] = '\0';
	if (ctx->header) {
		/* The header is still here, this must be the first packet. */
		strncpy(outbuf, ctx->header, outsize);
		g_free(ctx->header);
		ctx->header = NULL;
	}

	for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) {
//		memcpy(&sample, data_in + i, ctx->unitsize);
		sample = (struct sr_analog_sample *) (data_in + i);

		/* The first column is a counter (needed for gnuplot). */
		c = outbuf + strlen(outbuf);
		sprintf(c, "%" PRIu64 "\t", samplecount++);

		/* The next columns are the values of all channels. */
		for (p = 0; p < ctx->num_enabled_probes; p++) {
//			curbit = (sample & ((uint64_t) (1 << p))) >> p;
			c = outbuf + strlen(outbuf);
//			sprintf(c, "%d ", curbit);
			/*
			 * FIXME: Should be doing proper raw->voltage conversion
			 * here, casting to int16_t isn't it. Remember that if
			 * res = 1 conversion isn't necessary.
			 */
			sprintf(c, "%f ", (double) ((int16_t) (sample->probes[p].val &
					((1 << sample->probes[p].res) - 1))));
		}

		c = outbuf + strlen(outbuf);
		sprintf(c, "\n");
	}

	*data_out = outbuf;
	*length_out = strlen(outbuf);

	return SR_OK;
}

struct sr_output_format output_analog_gnuplot = {
	.id = "analog_gnuplot",
	.description = "Gnuplot analog",
	.df_type = SR_DF_ANALOG,
	.init = analog_init,
	.data = analog_data,
	.event = event,
};
#endif
Commit	Line	Data
e2ad47b5 UH	1	/*
	2	* This file is part of the sigrok project.
	3	*
	4	* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
	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 2 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, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include <stdlib.h>
	22	#include <string.h>
	23	#include <glib.h>
1a081ca6	24	#include "config.h"
cd315a80 UH	25	#include "sigrok.h"
cd315a80 UH	26	#include "sigrok-internal.h"
e2ad47b5 UH	27
e2ad47b5 UH	28	struct context {
afc8e4de UH	29	unsigned int num_enabled_probes;
afc8e4de UH	30	unsigned int unitsize;
9688b443	31	char *probelist[SR_MAX_NUM_PROBES + 1];
e2ad47b5 UH	32	char *header;
	33	};
	34
9688b443 UH	35	#define MAX_HEADER_LEN \
	36	(1024 + (SR_MAX_NUM_PROBES * (SR_MAX_PROBENAME_LEN + 10)))
	37
d078d2e5	38	static const char *gnuplot_header = "\
e2ad47b5 UH	39	# Sample data in space-separated columns format usable by gnuplot\n\
e2ad47b5 UH	40	#\n\
5cca9adb	41	# Generated by: %s on %s%s\
d4ae8eaa	42	# Period: %s\n\
114fb93f UH	43	#\n\
	44	# Column\tProbe\n\
	45	# -------------------------------------\
	46	----------------------------------------\n\
	47	# 0\t\tSample counter (for internal gnuplot purposes)\n%s\n";
e2ad47b5	48
d078d2e5	49	static const char *gnuplot_header_comment = "\
7aae7462 BV	50	# Comment: Acquisition with %d/%d probes at %s\n";
7aae7462 BV	51
f50f3f40	52	static int init(struct sr_output *o)
e2ad47b5	53	{
e2ad47b5	54	struct context *ctx;
1afe8989	55	struct sr_probe *probe;
e2ad47b5 UH	56	GSList *l;
e2ad47b5 UH	57	uint64_t samplerate;
afc8e4de UH	58	unsigned int i;
afc8e4de UH	59	int b, num_probes;
d4ae8eaa	60	char c, frequency_s;
7aae7462	61	char wbuf[1000], comment[128];
5cca9adb	62	time_t t;
e2ad47b5	63
20ebd1fe	64	if (!o) {
133a37bf	65	sr_err("gnuplot out: %s: o was NULL", __func__);
20ebd1fe UH	66	return SR_ERR_ARG;
	67	}
	68
bb7ef793 UH	69	if (!o->dev) {
bb7ef793 UH	70	sr_err("gnuplot out: %s: o->dev was NULL", __func__);
20ebd1fe UH	71	return SR_ERR_ARG;
	72	}
	73
bb7ef793 UH	74	if (!o->dev->plugin) {
bb7ef793 UH	75	sr_err("gnuplot out: %s: o->dev->plugin was NULL", __func__);
20ebd1fe UH	76	return SR_ERR_ARG;
	77	}
	78
133a37bf UH	79	if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
133a37bf UH	80	sr_err("gnuplot out: %s: ctx malloc failed", __func__);
e46b8fb1	81	return SR_ERR_MALLOC;
20ebd1fe	82	}
a821069b	83
133a37bf UH	84	if (!(ctx->header = g_try_malloc0(MAX_HEADER_LEN + 1))) {
	85	sr_err("gnuplot out: %s: ctx->header malloc failed", __func__);
	86	g_free(ctx);
e46b8fb1	87	return SR_ERR_MALLOC;
d4ae8eaa BV	88	}
d4ae8eaa BV	89
e2ad47b5 UH	90	o->internal = ctx;
e2ad47b5 UH	91	ctx->num_enabled_probes = 0;
bb7ef793	92	for (l = o->dev->probes; l; l = l->next) {
20ebd1fe	93	probe = l->data; /* TODO: Error checks. */
757b8c62 UH	94	if (!probe->enabled)
	95	continue;
	96	ctx->probelist[ctx->num_enabled_probes++] = probe->name;
e2ad47b5	97	}
e2ad47b5 UH	98	ctx->probelist[ctx->num_enabled_probes] = 0;
	99	ctx->unitsize = (ctx->num_enabled_probes + 7) / 8;
	100
bb7ef793	101	num_probes = g_slist_length(o->dev->probes);
a821069b	102	comment[0] = '\0';
bb7ef793	103	if (sr_dev_has_hwcap(o->dev, SR_HWCAP_SAMPLERATE)) {
5097b0d0	104	samplerate = ((uint64_t ) o->dev->plugin->dev_info_get(
bb7ef793	105	o->dev->plugin_index, SR_DI_CUR_SAMPLERATE));
a00ba012	106	if (!(frequency_s = sr_samplerate_string(samplerate))) {
133a37bf UH	107	sr_err("gnuplot out: %s: sr_samplerate_string failed",
	108	__func__);
	109	g_free(ctx->header);
	110	g_free(ctx);
e46b8fb1	111	return SR_ERR;
a821069b UH	112	}
a821069b UH	113	snprintf(comment, 127, gnuplot_header_comment,
d4ae8eaa	114	ctx->num_enabled_probes, num_probes, frequency_s);
133a37bf	115	g_free(frequency_s);
7aae7462	116	}
e2ad47b5 UH	117
	118	/* Columns / channels */
	119	wbuf[0] = '\0';
	120	for (i = 0; i < ctx->num_enabled_probes; i++) {
	121	c = (char )&wbuf + strlen((char )&wbuf);
114fb93f	122	sprintf(c, "# %d\t\t%s\n", i + 1, ctx->probelist[i]);
e2ad47b5 UH	123	}
e2ad47b5 UH	124
a00ba012	125	if (!(frequency_s = sr_period_string(samplerate))) {
133a37bf UH	126	sr_err("gnuplot out: %s: sr_period_string failed", __func__);
	127	g_free(ctx->header);
	128	g_free(ctx);
e46b8fb1	129	return SR_ERR;
d4ae8eaa	130	}
20ebd1fe	131
5cca9adb	132	t = time(NULL);
e2ad47b5	133	b = snprintf(ctx->header, MAX_HEADER_LEN, gnuplot_header,
d4ae8eaa	134	PACKAGE_STRING, ctime(&t), comment, frequency_s,
5cca9adb	135	(char *)&wbuf);
133a37bf	136	g_free(frequency_s);
e2ad47b5	137
d4ae8eaa	138	if (b < 0) {
133a37bf UH	139	sr_err("gnuplot out: %s: sprintf failed", __func__);
	140	g_free(ctx->header);
	141	g_free(ctx);
e46b8fb1	142	return SR_ERR;
d4ae8eaa	143	}
e2ad47b5 UH	144
	145	return 0;
	146	}
	147
f50f3f40	148	static int event(struct sr_output o, int event_type, char *data_out,
e2ad47b5 UH	149	uint64_t *length_out)
	150	{
	151	struct context *ctx;
e2ad47b5	152
20ebd1fe	153	if (!o) {
133a37bf	154	sr_err("gnuplot out: %s: o was NULL", __func__);
20ebd1fe UH	155	return SR_ERR_ARG;
	156	}
	157
	158	if (!data_out) {
133a37bf	159	sr_err("gnuplot out: %s: data_out was NULL", __func__);
20ebd1fe UH	160	return SR_ERR_ARG;
	161	}
	162
	163	if (!length_out) {
133a37bf	164	sr_err("gnuplot out: %s: length_out was NULL", __func__);
20ebd1fe UH	165	return SR_ERR_ARG;
	166	}
	167
e2ad47b5	168	ctx = o->internal;
20ebd1fe	169
99c1fc59	170	switch (event_type) {
5a2326a7	171	case SR_DF_TRIGGER:
20ebd1fe	172	/* TODO: Can a trigger mark be in a gnuplot data file? */
e2ad47b5	173	break;
5a2326a7	174	case SR_DF_END:
133a37bf	175	g_free(o->internal);
e2ad47b5 UH	176	o->internal = NULL;
e2ad47b5 UH	177	break;
20ebd1fe	178	default:
133a37bf UH	179	sr_err("gnuplot out: %s: unsupported event type: %d",
133a37bf UH	180	__func__, event_type);
20ebd1fe	181	break;
e2ad47b5 UH	182	}
e2ad47b5 UH	183
9ab95e54 BV	184	*data_out = NULL;
	185	*length_out = 0;
	186
e46b8fb1	187	return SR_OK;
e2ad47b5 UH	188	}
e2ad47b5 UH	189
54ac5277	190	static int data(struct sr_output o, const char data_in, uint64_t length_in,
e2ad47b5 UH	191	char *data_out, uint64_t length_out)
	192	{
	193	struct context *ctx;
d4ae8eaa	194	unsigned int max_linelen, outsize, p, curbit, i;
086eac7c	195	uint64_t sample;
50959ddc	196	static uint64_t samplecount = 0, old_sample = 0;
e2ad47b5 UH	197	char outbuf, c;
e2ad47b5 UH	198
20ebd1fe	199	if (!o) {
133a37bf	200	sr_err("gnuplot out: %s: o was NULL", __func__);
20ebd1fe UH	201	return SR_ERR_ARG;
	202	}
	203
	204	if (!o->internal) {
133a37bf	205	sr_err("gnuplot out: %s: o->internal was NULL", __func__);
20ebd1fe UH	206	return SR_ERR_ARG;
	207	}
	208
	209	if (!data_in) {
133a37bf	210	sr_err("gnuplot out: %s: data_in was NULL", __func__);
20ebd1fe UH	211	return SR_ERR_ARG;
	212	}
	213
	214	if (!data_out) {
133a37bf	215	sr_err("gnuplot out: %s: data_out was NULL", __func__);
20ebd1fe UH	216	return SR_ERR_ARG;
	217	}
	218
	219	if (!length_out) {
133a37bf	220	sr_err("gnuplot out: %s: length_out was NULL", __func__);
20ebd1fe UH	221	return SR_ERR_ARG;
	222	}
	223
e2ad47b5	224	ctx = o->internal;
d4ae8eaa BV	225	max_linelen = 16 + ctx->num_enabled_probes * 2;
d4ae8eaa BV	226	outsize = length_in / ctx->unitsize * max_linelen;
e273a904	227	if (ctx->header)
d4ae8eaa	228	outsize += strlen(ctx->header);
a821069b	229
133a37bf UH	230	if (!(outbuf = g_try_malloc0(outsize))) {
133a37bf UH	231	sr_err("gnuplot out: %s: outbuf malloc failed", __func__);
e46b8fb1	232	return SR_ERR_MALLOC;
20ebd1fe	233	}
a821069b UH	234
a821069b UH	235	outbuf[0] = '\0';
e2ad47b5 UH	236	if (ctx->header) {
	237	/* The header is still here, this must be the first packet. */
	238	strncpy(outbuf, ctx->header, outsize);
133a37bf	239	g_free(ctx->header);
e2ad47b5	240	ctx->header = NULL;
e2ad47b5 UH	241	}
e2ad47b5 UH	242
607b58de	243	for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) {
50959ddc	244
607b58de	245	memcpy(&sample, data_in + i, ctx->unitsize);
e2ad47b5	246
50959ddc UH	247	/*
	248	* Don't output the same samples multiple times. However, make
	249	* sure to output at least the first and last sample.
	250	*/
	251	if (samplecount++ != 0 && sample == old_sample) {
	252	if (i != (length_in - ctx->unitsize))
	253	continue;
	254	}
	255	old_sample = sample;
	256
e2ad47b5 UH	257	/* The first column is a counter (needed for gnuplot). */
e2ad47b5 UH	258	c = outbuf + strlen(outbuf);
d4ae8eaa	259	sprintf(c, "%" PRIu64 "\t", samplecount++);
e2ad47b5 UH	260
	261	/* The next columns are the values of all channels. */
	262	for (p = 0; p < ctx->num_enabled_probes; p++) {
fbe2f794	263	curbit = (sample & ((uint64_t) (1 << p))) >> p;
e2ad47b5 UH	264	c = outbuf + strlen(outbuf);
	265	sprintf(c, "%d ", curbit);
	266	}
	267
	268	c = outbuf + strlen(outbuf);
	269	sprintf(c, "\n");
e2ad47b5 UH	270	}
	271
	272	*data_out = outbuf;
	273	*length_out = strlen(outbuf);
	274
e46b8fb1	275	return SR_OK;
e2ad47b5 UH	276	}
e2ad47b5 UH	277
7c1d391c	278	SR_PRIV struct sr_output_format output_gnuplot = {
cdb3573c	279	.id = "gnuplot",
d494a4aa UH	280	.description = "Gnuplot",
	281	.df_type = SR_DF_LOGIC,
	282	.init = init,
	283	.data = data,
	284	.event = event,
77b45442 UH	285	};
	286
	287	/* Temporarily disabled. */
	288	#if 0
f50f3f40	289	static int analog_init(struct sr_output *o)
81bbdf6a DR	290	{
81bbdf6a DR	291	struct context *ctx;
1afe8989	292	struct sr_probe *probe;
81bbdf6a DR	293	GSList *l;
	294	uint64_t samplerate;
	295	unsigned int i;
	296	int b, num_probes;
	297	char c, frequency_s;
	298	char wbuf[1000], comment[128];
	299	time_t t;
	300
133a37bf UH	301	if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
133a37bf UH	302	sr_err("gnuplot out: %s: ctx malloc failed", __func__);
e46b8fb1	303	return SR_ERR_MALLOC;
133a37bf	304	}
81bbdf6a	305
133a37bf UH	306	if (!(ctx->header = g_try_malloc0(MAX_HEADER_LEN + 1))) {
	307	g_free(ctx);
	308	sr_err("gnuplot out: %s: ctx->header malloc failed", __func__);
e46b8fb1	309	return SR_ERR_MALLOC;
81bbdf6a DR	310	}
	311
	312	o->internal = ctx;
	313	ctx->num_enabled_probes = 0;
bb7ef793	314	for (l = o->dev->probes; l; l = l->next) {
81bbdf6a DR	315	probe = l->data;
	316	if (!probe->enabled)
	317	continue;
	318	ctx->probelist[ctx->num_enabled_probes++] = probe->name;
	319	}
	320	ctx->probelist[ctx->num_enabled_probes] = 0;
	321	// ctx->unitsize = (ctx->num_enabled_probes + 7) / 8;
809c5f20 UH	322	ctx->unitsize = sizeof(struct sr_analog_sample) +
809c5f20 UH	323	(ctx->num_enabled_probes * sizeof(struct sr_analog_probe));
81bbdf6a	324
bb7ef793	325	num_probes = g_slist_length(o->dev->probes);
81bbdf6a	326	comment[0] = '\0';
bb7ef793	327	if (o->dev->plugin && sr_dev_has_hwcap(o->dev, SR_HWCAP_SAMPLERATE)) {
5097b0d0	328	samplerate = ((uint64_t ) o->dev->plugin->dev_info_get(
bb7ef793	329	o->dev->plugin_index, SR_DI_CUR_SAMPLERATE));
a00ba012	330	if (!(frequency_s = sr_samplerate_string(samplerate))) {
133a37bf UH	331	g_free(ctx->header);
133a37bf UH	332	g_free(ctx);
e46b8fb1	333	return SR_ERR;
81bbdf6a DR	334	}
	335	snprintf(comment, 127, gnuplot_header_comment,
	336	ctx->num_enabled_probes, num_probes, frequency_s);
133a37bf	337	g_free(frequency_s);
81bbdf6a DR	338	}
	339
	340	/* Columns / channels */
	341	wbuf[0] = '\0';
	342	for (i = 0; i < ctx->num_enabled_probes; i++) {
	343	c = (char )&wbuf + strlen((char )&wbuf);
	344	sprintf(c, "# %d\t\t%s\n", i + 1, ctx->probelist[i]);
	345	}
	346
a00ba012	347	if (!(frequency_s = sr_period_string(samplerate))) {
133a37bf UH	348	g_free(ctx->header);
133a37bf UH	349	g_free(ctx);
e46b8fb1	350	return SR_ERR;
81bbdf6a DR	351	}
	352	t = time(NULL);
	353	b = snprintf(ctx->header, MAX_HEADER_LEN, gnuplot_header,
	354	PACKAGE_STRING, ctime(&t), comment, frequency_s,
	355	(char *)&wbuf);
133a37bf	356	g_free(frequency_s);
81bbdf6a DR	357
81bbdf6a DR	358	if (b < 0) {
133a37bf UH	359	g_free(ctx->header);
133a37bf UH	360	g_free(ctx);
e46b8fb1	361	return SR_ERR;
81bbdf6a DR	362	}
	363
	364	return 0;
	365	}
	366
f50f3f40	367	static int analog_data(struct sr_output o, char data_in, uint64_t length_in,
81bbdf6a DR	368	char *data_out, uint64_t length_out)
	369	{
	370	struct context *ctx;
ff35879b	371	unsigned int max_linelen, outsize, p, /* curbit, */ i;
81bbdf6a DR	372	// uint64_t sample;
	373	static uint64_t samplecount = 0;
	374	char outbuf, c;
809c5f20	375	struct sr_analog_sample *sample;
81bbdf6a DR	376
	377	ctx = o->internal;
	378	// max_linelen = 16 + ctx->num_enabled_probes * 2;
	379	max_linelen = 16 + ctx->num_enabled_probes * 30;
	380	outsize = length_in / ctx->unitsize * max_linelen;
	381	if (ctx->header)
	382	outsize += strlen(ctx->header);
	383
133a37bf UH	384	if (!(outbuf = g_try_malloc0(outsize))) {
133a37bf UH	385	sr_err("gnuplot out: %s: outbuf malloc failed", __func__);
e46b8fb1	386	return SR_ERR_MALLOC;
133a37bf	387	}
81bbdf6a DR	388
	389	outbuf[0] = '\0';
	390	if (ctx->header) {
	391	/* The header is still here, this must be the first packet. */
	392	strncpy(outbuf, ctx->header, outsize);
133a37bf	393	g_free(ctx->header);
81bbdf6a DR	394	ctx->header = NULL;
	395	}
	396
	397	for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) {
	398	// memcpy(&sample, data_in + i, ctx->unitsize);
809c5f20	399	sample = (struct sr_analog_sample *) (data_in + i);
81bbdf6a DR	400
	401	/* The first column is a counter (needed for gnuplot). */
	402	c = outbuf + strlen(outbuf);
	403	sprintf(c, "%" PRIu64 "\t", samplecount++);
	404
	405	/* The next columns are the values of all channels. */
	406	for (p = 0; p < ctx->num_enabled_probes; p++) {
	407	// curbit = (sample & ((uint64_t) (1 << p))) >> p;
	408	c = outbuf + strlen(outbuf);
	409	// sprintf(c, "%d ", curbit);
	410	/*
	411	* FIXME: Should be doing proper raw->voltage conversion
	412	* here, casting to int16_t isn't it. Remember that if
	413	* res = 1 conversion isn't necessary.
	414	*/
	415	sprintf(c, "%f ", (double) ((int16_t) (sample->probes[p].val &
	416	((1 << sample->probes[p].res) - 1))));
	417	}
	418
	419	c = outbuf + strlen(outbuf);
	420	sprintf(c, "\n");
	421	}
	422
	423	*data_out = outbuf;
	424	*length_out = strlen(outbuf);
	425
e46b8fb1	426	return SR_OK;
81bbdf6a DR	427	}
81bbdf6a DR	428
f50f3f40	429	struct sr_output_format output_analog_gnuplot = {
cdb3573c	430	.id = "analog_gnuplot",
d494a4aa UH	431	.description = "Gnuplot analog",
	432	.df_type = SR_DF_ANALOG,
	433	.init = analog_init,
	434	.data = analog_data,
	435	.event = event,
81bbdf6a	436	};
77b45442	437	#endif