[libsigrok.git] / output / 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 <sigrok.h>
#include "config.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) {
		g_warning("gnuplot out: %s: o was NULL", __func__);
		return SR_ERR_ARG;
	}

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

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

	if (!(ctx = calloc(1, sizeof(struct context)))) {
		g_warning("gnuplot out: %s: ctx calloc failed", __func__);
		return SR_ERR_MALLOC;
	}

	if (!(ctx->header = calloc(1, MAX_HEADER_LEN + 1))) {
		g_warning("gnuplot out: %s: ctx->header calloc failed",
			  __func__);
		free(ctx);
		return SR_ERR_MALLOC;
	}

	o->internal = ctx;
	ctx->num_enabled_probes = 0;
	for (l = o->device->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->device->probes);
	comment[0] = '\0';
	if (sr_device_has_hwcap(o->device, SR_HWCAP_SAMPLERATE)) {
		samplerate = *((uint64_t *) o->device->plugin->get_device_info(
				o->device->plugin_index, SR_DI_CUR_SAMPLERATE));
		if (!(frequency_s = sr_samplerate_string(samplerate))) {
			g_warning("gnuplot out: %s: sr_samplerate_string "
				  "failed", __func__);
			free(ctx->header);
			free(ctx);
			return SR_ERR;
		}
		snprintf(comment, 127, gnuplot_header_comment,
			ctx->num_enabled_probes, num_probes, frequency_s);
		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_warning("gnuplot out: %s: sr_period_string failed", __func__);
		free(ctx->header);
		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);
	free(frequency_s);

	if (b < 0) {
		g_warning("gnuplot out: %s: sprintf failed", __func__);
		free(ctx->header);
		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) {
		g_warning("gnuplot out: %s: o was NULL", __func__);
		return SR_ERR_ARG;
	}

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

	if (!length_out) {
		g_warning("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:
		free(o->internal);
		o->internal = NULL;
		break;
	default:
		g_warning("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;
	char *outbuf, *c;

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

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

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

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

	if (!length_out) {
		g_warning("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 = calloc(1, outsize))) {
		g_warning("gnuplot out: %s: outbuf calloc 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);
		free(ctx->header);
		ctx->header = NULL;
	}

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

		/* 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;
}

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 = calloc(1, sizeof(struct context))))
		return SR_ERR_MALLOC;

	if (!(ctx->header = calloc(1, MAX_HEADER_LEN + 1))) {
		free(ctx);
		return SR_ERR_MALLOC;
	}

	o->internal = ctx;
	ctx->num_enabled_probes = 0;
	for (l = o->device->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->device->probes);
	comment[0] = '\0';
	if (o->device->plugin && sr_device_has_hwcap(o->device, SR_HWCAP_SAMPLERATE)) {
		samplerate = *((uint64_t *) o->device->plugin->get_device_info(
				o->device->plugin_index, SR_DI_CUR_SAMPLERATE));
		if (!(frequency_s = sr_samplerate_string(samplerate))) {
			free(ctx->header);
			free(ctx);
			return SR_ERR;
		}
		snprintf(comment, 127, gnuplot_header_comment,
			ctx->num_enabled_probes, num_probes, frequency_s);
		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))) {
		free(ctx->header);
		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);
	free(frequency_s);

	if (b < 0) {
		free(ctx->header);
		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 = calloc(1, outsize)))
		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);
		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>
	24	#include <sigrok.h>
	25	#include "config.h"
	26
	27	struct context {
afc8e4de UH	28	unsigned int num_enabled_probes;
afc8e4de UH	29	unsigned int unitsize;
9688b443	30	char *probelist[SR_MAX_NUM_PROBES + 1];
e2ad47b5 UH	31	char *header;
	32	};
	33
9688b443 UH	34	#define MAX_HEADER_LEN \
	35	(1024 + (SR_MAX_NUM_PROBES * (SR_MAX_PROBENAME_LEN + 10)))
	36
d078d2e5	37	static const char *gnuplot_header = "\
e2ad47b5 UH	38	# Sample data in space-separated columns format usable by gnuplot\n\
e2ad47b5 UH	39	#\n\
5cca9adb	40	# Generated by: %s on %s%s\
d4ae8eaa	41	# Period: %s\n\
114fb93f UH	42	#\n\
	43	# Column\tProbe\n\
	44	# -------------------------------------\
	45	----------------------------------------\n\
	46	# 0\t\tSample counter (for internal gnuplot purposes)\n%s\n";
e2ad47b5	47
d078d2e5	48	static const char *gnuplot_header_comment = "\
7aae7462 BV	49	# Comment: Acquisition with %d/%d probes at %s\n";
7aae7462 BV	50
f50f3f40	51	static int init(struct sr_output *o)
e2ad47b5	52	{
e2ad47b5	53	struct context *ctx;
1afe8989	54	struct sr_probe *probe;
e2ad47b5 UH	55	GSList *l;
e2ad47b5 UH	56	uint64_t samplerate;
afc8e4de UH	57	unsigned int i;
afc8e4de UH	58	int b, num_probes;
d4ae8eaa	59	char c, frequency_s;
7aae7462	60	char wbuf[1000], comment[128];
5cca9adb	61	time_t t;
e2ad47b5	62
20ebd1fe UH	63	if (!o) {
	64	g_warning("gnuplot out: %s: o was NULL", __func__);
	65	return SR_ERR_ARG;
	66	}
	67
	68	if (!o->device) {
	69	g_warning("gnuplot out: %s: o->device was NULL", __func__);
	70	return SR_ERR_ARG;
	71	}
	72
	73	if (!o->device->plugin) {
	74	g_warning("gnuplot out: %s: o->device->plugin was NULL",
	75	__func__);
	76	return SR_ERR_ARG;
	77	}
	78
	79	if (!(ctx = calloc(1, sizeof(struct context)))) {
	80	g_warning("gnuplot out: %s: ctx calloc failed", __func__);
e46b8fb1	81	return SR_ERR_MALLOC;
20ebd1fe	82	}
a821069b	83
d4ae8eaa	84	if (!(ctx->header = calloc(1, MAX_HEADER_LEN + 1))) {
20ebd1fe UH	85	g_warning("gnuplot out: %s: ctx->header calloc failed",
20ebd1fe UH	86	__func__);
d4ae8eaa	87	free(ctx);
e46b8fb1	88	return SR_ERR_MALLOC;
d4ae8eaa BV	89	}
d4ae8eaa BV	90
e2ad47b5 UH	91	o->internal = ctx;
	92	ctx->num_enabled_probes = 0;
	93	for (l = o->device->probes; l; l = l->next) {
20ebd1fe	94	probe = l->data; /* TODO: Error checks. */
757b8c62 UH	95	if (!probe->enabled)
	96	continue;
	97	ctx->probelist[ctx->num_enabled_probes++] = probe->name;
e2ad47b5	98	}
e2ad47b5 UH	99	ctx->probelist[ctx->num_enabled_probes] = 0;
	100	ctx->unitsize = (ctx->num_enabled_probes + 7) / 8;
	101
e2ad47b5	102	num_probes = g_slist_length(o->device->probes);
a821069b	103	comment[0] = '\0';
20ebd1fe	104	if (sr_device_has_hwcap(o->device, SR_HWCAP_SAMPLERATE)) {
7aae7462	105	samplerate = ((uint64_t ) o->device->plugin->get_device_info(
5a2326a7	106	o->device->plugin_index, SR_DI_CUR_SAMPLERATE));
a00ba012	107	if (!(frequency_s = sr_samplerate_string(samplerate))) {
20ebd1fe UH	108	g_warning("gnuplot out: %s: sr_samplerate_string "
20ebd1fe UH	109	"failed", __func__);
a821069b UH	110	free(ctx->header);
a821069b UH	111	free(ctx);
e46b8fb1	112	return SR_ERR;
a821069b UH	113	}
a821069b UH	114	snprintf(comment, 127, gnuplot_header_comment,
d4ae8eaa BV	115	ctx->num_enabled_probes, num_probes, frequency_s);
d4ae8eaa BV	116	free(frequency_s);
7aae7462	117	}
e2ad47b5 UH	118
	119	/* Columns / channels */
	120	wbuf[0] = '\0';
	121	for (i = 0; i < ctx->num_enabled_probes; i++) {
	122	c = (char )&wbuf + strlen((char )&wbuf);
114fb93f	123	sprintf(c, "# %d\t\t%s\n", i + 1, ctx->probelist[i]);
e2ad47b5 UH	124	}
e2ad47b5 UH	125
a00ba012	126	if (!(frequency_s = sr_period_string(samplerate))) {
20ebd1fe	127	g_warning("gnuplot out: %s: sr_period_string failed", __func__);
d4ae8eaa BV	128	free(ctx->header);
d4ae8eaa BV	129	free(ctx);
e46b8fb1	130	return SR_ERR;
d4ae8eaa	131	}
20ebd1fe	132
5cca9adb	133	t = time(NULL);
e2ad47b5	134	b = snprintf(ctx->header, MAX_HEADER_LEN, gnuplot_header,
d4ae8eaa	135	PACKAGE_STRING, ctime(&t), comment, frequency_s,
5cca9adb	136	(char *)&wbuf);
d4ae8eaa	137	free(frequency_s);
e2ad47b5	138
d4ae8eaa	139	if (b < 0) {
20ebd1fe	140	g_warning("gnuplot out: %s: sprintf failed", __func__);
d4ae8eaa BV	141	free(ctx->header);
d4ae8eaa BV	142	free(ctx);
e46b8fb1	143	return SR_ERR;
d4ae8eaa	144	}
e2ad47b5 UH	145
	146	return 0;
	147	}
	148
f50f3f40	149	static int event(struct sr_output o, int event_type, char *data_out,
e2ad47b5 UH	150	uint64_t *length_out)
	151	{
	152	struct context *ctx;
e2ad47b5	153
20ebd1fe UH	154	if (!o) {
	155	g_warning("gnuplot out: %s: o was NULL", __func__);
	156	return SR_ERR_ARG;
	157	}
	158
	159	if (!data_out) {
	160	g_warning("gnuplot out: %s: data_out was NULL", __func__);
	161	return SR_ERR_ARG;
	162	}
	163
	164	if (!length_out) {
	165	g_warning("gnuplot out: %s: length_out was NULL", __func__);
	166	return SR_ERR_ARG;
	167	}
	168
e2ad47b5	169	ctx = o->internal;
20ebd1fe	170
99c1fc59	171	switch (event_type) {
5a2326a7	172	case SR_DF_TRIGGER:
20ebd1fe	173	/* TODO: Can a trigger mark be in a gnuplot data file? */
e2ad47b5	174	break;
5a2326a7	175	case SR_DF_END:
e2ad47b5 UH	176	free(o->internal);
	177	o->internal = NULL;
	178	break;
20ebd1fe UH	179	default:
	180	g_warning("gnuplot out: %s: unsupported event type: %d",
	181	__func__, event_type);
	182	break;
e2ad47b5 UH	183	}
e2ad47b5 UH	184
9ab95e54 BV	185	*data_out = NULL;
	186	*length_out = 0;
	187
e46b8fb1	188	return SR_OK;
e2ad47b5 UH	189	}
e2ad47b5 UH	190
54ac5277	191	static int data(struct sr_output o, const char data_in, uint64_t length_in,
e2ad47b5 UH	192	char *data_out, uint64_t length_out)
	193	{
	194	struct context *ctx;
d4ae8eaa	195	unsigned int max_linelen, outsize, p, curbit, i;
086eac7c UH	196	uint64_t sample;
086eac7c UH	197	static uint64_t samplecount = 0;
e2ad47b5 UH	198	char outbuf, c;
e2ad47b5 UH	199
20ebd1fe UH	200	if (!o) {
	201	g_warning("gnuplot out: %s: o was NULL", __func__);
	202	return SR_ERR_ARG;
	203	}
	204
	205	if (!o->internal) {
	206	g_warning("gnuplot out: %s: o->internal was NULL", __func__);
	207	return SR_ERR_ARG;
	208	}
	209
	210	if (!data_in) {
	211	g_warning("gnuplot out: %s: data_in was NULL", __func__);
	212	return SR_ERR_ARG;
	213	}
	214
	215	if (!data_out) {
	216	g_warning("gnuplot out: %s: data_out was NULL", __func__);
	217	return SR_ERR_ARG;
	218	}
	219
	220	if (!length_out) {
	221	g_warning("gnuplot out: %s: length_out was NULL", __func__);
	222	return SR_ERR_ARG;
	223	}
	224
e2ad47b5	225	ctx = o->internal;
d4ae8eaa BV	226	max_linelen = 16 + ctx->num_enabled_probes * 2;
d4ae8eaa BV	227	outsize = length_in / ctx->unitsize * max_linelen;
e273a904	228	if (ctx->header)
d4ae8eaa	229	outsize += strlen(ctx->header);
a821069b	230
20ebd1fe UH	231	if (!(outbuf = calloc(1, outsize))) {
20ebd1fe UH	232	g_warning("gnuplot out: %s: outbuf calloc failed", __func__);
e46b8fb1	233	return SR_ERR_MALLOC;
20ebd1fe	234	}
a821069b UH	235
a821069b UH	236	outbuf[0] = '\0';
e2ad47b5 UH	237	if (ctx->header) {
	238	/* The header is still here, this must be the first packet. */
	239	strncpy(outbuf, ctx->header, outsize);
	240	free(ctx->header);
	241	ctx->header = NULL;
e2ad47b5 UH	242	}
e2ad47b5 UH	243
607b58de UH	244	for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) {
607b58de UH	245	memcpy(&sample, data_in + i, ctx->unitsize);
e2ad47b5 UH	246
	247	/* The first column is a counter (needed for gnuplot). */
	248	c = outbuf + strlen(outbuf);
d4ae8eaa	249	sprintf(c, "%" PRIu64 "\t", samplecount++);
e2ad47b5 UH	250
	251	/* The next columns are the values of all channels. */
	252	for (p = 0; p < ctx->num_enabled_probes; p++) {
fbe2f794	253	curbit = (sample & ((uint64_t) (1 << p))) >> p;
e2ad47b5 UH	254	c = outbuf + strlen(outbuf);
	255	sprintf(c, "%d ", curbit);
	256	}
	257
	258	c = outbuf + strlen(outbuf);
	259	sprintf(c, "\n");
e2ad47b5 UH	260	}
	261
	262	*data_out = outbuf;
	263	*length_out = strlen(outbuf);
	264
e46b8fb1	265	return SR_OK;
e2ad47b5 UH	266	}
e2ad47b5 UH	267
77b45442	268	struct sr_output_format output_gnuplot = {
cdb3573c	269	.id = "gnuplot",
d494a4aa UH	270	.description = "Gnuplot",
	271	.df_type = SR_DF_LOGIC,
	272	.init = init,
	273	.data = data,
	274	.event = event,
77b45442 UH	275	};
	276
	277	/* Temporarily disabled. */
	278	#if 0
f50f3f40	279	static int analog_init(struct sr_output *o)
81bbdf6a DR	280	{
81bbdf6a DR	281	struct context *ctx;
1afe8989	282	struct sr_probe *probe;
81bbdf6a DR	283	GSList *l;
	284	uint64_t samplerate;
	285	unsigned int i;
	286	int b, num_probes;
	287	char c, frequency_s;
	288	char wbuf[1000], comment[128];
	289	time_t t;
	290
	291	if (!(ctx = calloc(1, sizeof(struct context))))
e46b8fb1	292	return SR_ERR_MALLOC;
81bbdf6a DR	293
	294	if (!(ctx->header = calloc(1, MAX_HEADER_LEN + 1))) {
	295	free(ctx);
e46b8fb1	296	return SR_ERR_MALLOC;
81bbdf6a DR	297	}
	298
	299	o->internal = ctx;
	300	ctx->num_enabled_probes = 0;
	301	for (l = o->device->probes; l; l = l->next) {
	302	probe = l->data;
	303	if (!probe->enabled)
	304	continue;
	305	ctx->probelist[ctx->num_enabled_probes++] = probe->name;
	306	}
	307	ctx->probelist[ctx->num_enabled_probes] = 0;
	308	// ctx->unitsize = (ctx->num_enabled_probes + 7) / 8;
809c5f20 UH	309	ctx->unitsize = sizeof(struct sr_analog_sample) +
809c5f20 UH	310	(ctx->num_enabled_probes * sizeof(struct sr_analog_probe));
81bbdf6a DR	311
	312	num_probes = g_slist_length(o->device->probes);
	313	comment[0] = '\0';
2bf4aca6	314	if (o->device->plugin && sr_device_has_hwcap(o->device, SR_HWCAP_SAMPLERATE)) {
81bbdf6a	315	samplerate = ((uint64_t ) o->device->plugin->get_device_info(
5a2326a7	316	o->device->plugin_index, SR_DI_CUR_SAMPLERATE));
a00ba012	317	if (!(frequency_s = sr_samplerate_string(samplerate))) {
81bbdf6a DR	318	free(ctx->header);
81bbdf6a DR	319	free(ctx);
e46b8fb1	320	return SR_ERR;
81bbdf6a DR	321	}
	322	snprintf(comment, 127, gnuplot_header_comment,
	323	ctx->num_enabled_probes, num_probes, frequency_s);
	324	free(frequency_s);
	325	}
	326
	327	/* Columns / channels */
	328	wbuf[0] = '\0';
	329	for (i = 0; i < ctx->num_enabled_probes; i++) {
	330	c = (char )&wbuf + strlen((char )&wbuf);
	331	sprintf(c, "# %d\t\t%s\n", i + 1, ctx->probelist[i]);
	332	}
	333
a00ba012	334	if (!(frequency_s = sr_period_string(samplerate))) {
81bbdf6a DR	335	free(ctx->header);
81bbdf6a DR	336	free(ctx);
e46b8fb1	337	return SR_ERR;
81bbdf6a DR	338	}
	339	t = time(NULL);
	340	b = snprintf(ctx->header, MAX_HEADER_LEN, gnuplot_header,
	341	PACKAGE_STRING, ctime(&t), comment, frequency_s,
	342	(char *)&wbuf);
	343	free(frequency_s);
	344
	345	if (b < 0) {
	346	free(ctx->header);
	347	free(ctx);
e46b8fb1	348	return SR_ERR;
81bbdf6a DR	349	}
	350
	351	return 0;
	352	}
	353
f50f3f40	354	static int analog_data(struct sr_output o, char data_in, uint64_t length_in,
81bbdf6a DR	355	char *data_out, uint64_t length_out)
	356	{
	357	struct context *ctx;
ff35879b	358	unsigned int max_linelen, outsize, p, /* curbit, */ i;
81bbdf6a DR	359	// uint64_t sample;
	360	static uint64_t samplecount = 0;
	361	char outbuf, c;
809c5f20	362	struct sr_analog_sample *sample;
81bbdf6a DR	363
	364	ctx = o->internal;
	365	// max_linelen = 16 + ctx->num_enabled_probes * 2;
	366	max_linelen = 16 + ctx->num_enabled_probes * 30;
	367	outsize = length_in / ctx->unitsize * max_linelen;
	368	if (ctx->header)
	369	outsize += strlen(ctx->header);
	370
	371	if (!(outbuf = calloc(1, outsize)))
e46b8fb1	372	return SR_ERR_MALLOC;
81bbdf6a DR	373
	374	outbuf[0] = '\0';
	375	if (ctx->header) {
	376	/* The header is still here, this must be the first packet. */
	377	strncpy(outbuf, ctx->header, outsize);
	378	free(ctx->header);
	379	ctx->header = NULL;
	380	}
	381
	382	for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) {
	383	// memcpy(&sample, data_in + i, ctx->unitsize);
809c5f20	384	sample = (struct sr_analog_sample *) (data_in + i);
81bbdf6a DR	385
	386	/* The first column is a counter (needed for gnuplot). */
	387	c = outbuf + strlen(outbuf);
	388	sprintf(c, "%" PRIu64 "\t", samplecount++);
	389
	390	/* The next columns are the values of all channels. */
	391	for (p = 0; p < ctx->num_enabled_probes; p++) {
	392	// curbit = (sample & ((uint64_t) (1 << p))) >> p;
	393	c = outbuf + strlen(outbuf);
	394	// sprintf(c, "%d ", curbit);
	395	/*
	396	* FIXME: Should be doing proper raw->voltage conversion
	397	* here, casting to int16_t isn't it. Remember that if
	398	* res = 1 conversion isn't necessary.
	399	*/
	400	sprintf(c, "%f ", (double) ((int16_t) (sample->probes[p].val &
	401	((1 << sample->probes[p].res) - 1))));
	402	}
	403
	404	c = outbuf + strlen(outbuf);
	405	sprintf(c, "\n");
	406	}
	407
	408	*data_out = outbuf;
	409	*length_out = strlen(outbuf);
	410
e46b8fb1	411	return SR_OK;
81bbdf6a DR	412	}
81bbdf6a DR	413
f50f3f40	414	struct sr_output_format output_analog_gnuplot = {
cdb3573c	415	.id = "analog_gnuplot",
d494a4aa UH	416	.description = "Gnuplot analog",
	417	.df_type = SR_DF_ANALOG,
	418	.init = analog_init,
	419	.data = analog_data,
	420	.event = event,
81bbdf6a	421	};
77b45442	422	#endif