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

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2014 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/libsigrok.h>
#include "libsigrok-internal.h"

#define LOG_PREFIX "output/hex"

#define DEFAULT_SAMPLES_PER_LINE 192

struct context {
	unsigned int num_enabled_channels;
	int spl;
	int bit_cnt;
	int spl_cnt;
	int trigger;
	uint64_t samplerate;
	int *channel_index;
	char **channel_names;
	char **line_values;
	uint8_t *sample_buf;
	gboolean header_done;
	GString **lines;
};

static int init(struct sr_output *o, GHashTable *options)
{
	struct context *ctx;
	struct sr_channel *ch;
	GSList *l;
	unsigned int i, j;

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

	ctx = g_malloc0(sizeof(struct context));
	o->priv = ctx;
	ctx->trigger = -1;
	ctx->spl = g_variant_get_uint32(g_hash_table_lookup(options, "width"));

	for (l = o->sdi->channels; l; l = l->next) {
		ch = l->data;
		if (ch->type != SR_CHANNEL_LOGIC)
			continue;
		if (!ch->enabled)
			continue;
		ctx->num_enabled_channels++;
	}
	ctx->channel_index = g_malloc(sizeof(int) * ctx->num_enabled_channels);
	ctx->channel_names = g_malloc(sizeof(char *) * ctx->num_enabled_channels);
	ctx->lines = g_malloc(sizeof(GString *) * ctx->num_enabled_channels);
	ctx->sample_buf = g_malloc(ctx->num_enabled_channels);

	j = 0;
	for (i = 0, l = o->sdi->channels; l; l = l->next, i++) {
		ch = l->data;
		if (ch->type != SR_CHANNEL_LOGIC)
			continue;
		if (!ch->enabled)
			continue;
		ctx->channel_index[j] = ch->index;
		ctx->channel_names[j] = ch->name;
		ctx->lines[j] = g_string_sized_new(80);
		ctx->sample_buf[j] = 0;
		g_string_printf(ctx->lines[j], "%s:", ch->name);
		j++;
	}

	return SR_OK;
}

static GString *gen_header(const struct sr_output *o)
{
	struct context *ctx;
	GVariant *gvar;
	GString *header;
	int num_channels;
	char *samplerate_s;

	ctx = o->priv;
	if (ctx->samplerate == 0) {
		if (sr_config_get(o->sdi->driver, o->sdi, NULL, SR_CONF_SAMPLERATE,
				&gvar) == SR_OK) {
			ctx->samplerate = g_variant_get_uint64(gvar);
			g_variant_unref(gvar);
		}
	}

	header = g_string_sized_new(512);
	g_string_printf(header, "%s\n", PACKAGE_STRING);
	num_channels = g_slist_length(o->sdi->channels);
	g_string_append_printf(header, "Acquisition with %d/%d channels",
			ctx->num_enabled_channels, num_channels);
	if (ctx->samplerate != 0) {
		samplerate_s = sr_samplerate_string(ctx->samplerate);
		g_string_append_printf(header, " at %s", samplerate_s);
		g_free(samplerate_s);
	}
	g_string_append_printf(header, "\n");

	return header;
}

static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet,
		GString **out)
{
	const struct sr_datafeed_meta *meta;
	const struct sr_datafeed_logic *logic;
	const struct sr_config *src;
	GSList *l;
	struct context *ctx;
	int idx, pos, offset;
	uint64_t i, j;
	gchar *p;

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

	switch (packet->type) {
	case SR_DF_META:
		meta = packet->payload;
		for (l = meta->config; l; l = l->next) {
			src = l->data;
			if (src->key != SR_CONF_SAMPLERATE)
				continue;
			ctx->samplerate = g_variant_get_uint64(src->data);
		}
		break;
	case SR_DF_TRIGGER:
		ctx->trigger = ctx->spl_cnt;
		break;
	case SR_DF_LOGIC:
		if (!ctx->header_done) {
			*out = gen_header(o);
			ctx->header_done = TRUE;
		} else
			*out = g_string_sized_new(512);

		logic = packet->payload;
		for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) {
			ctx->spl_cnt++;
			pos = ctx->spl_cnt & 7;
			for (j = 0; j < ctx->num_enabled_channels; j++) {
				idx = ctx->channel_index[j];
				p = logic->data + i + idx / 8;
				ctx->sample_buf[j] <<= 1;
				if (*p & (1 << (idx % 8)))
					ctx->sample_buf[j] |= 1;
				if (ctx->spl_cnt && pos == 0) {
					/* Buffered a byte's worth, output hex. */
					g_string_append_printf(ctx->lines[j], "%.2x ",
							ctx->sample_buf[j]);
					ctx->sample_buf[j] = 0;
				}

				if (ctx->spl_cnt == ctx->spl) {
					/* Flush line buffers. */
					g_string_append_len(*out, ctx->lines[j]->str, ctx->lines[j]->len);
					g_string_append_c(*out, '\n');
					if (j == ctx->num_enabled_channels  - 1 && ctx->trigger > -1) {
						offset = ctx->trigger + ctx->trigger / 8;
						g_string_append_printf(*out, "T:%*s^ %d\n", offset, "", ctx->trigger);
						ctx->trigger = -1;
					}
					g_string_printf(ctx->lines[j], "%s:", ctx->channel_names[j]);
				}
			}
			if (ctx->spl_cnt == ctx->spl)
				/* Line buffers were already flushed. */
				ctx->spl_cnt = 0;
		}
		break;
	case SR_DF_END:
		if (ctx->spl_cnt) {
			/* Line buffers need flushing. */
			*out = g_string_sized_new(512);
			for (i = 0; i < ctx->num_enabled_channels; i++) {
				if (ctx->spl_cnt & 7)
					g_string_append_printf(ctx->lines[i], "%.2x ",
							ctx->sample_buf[i] << (8 - (ctx->spl_cnt & 7)));
				g_string_append_len(*out, ctx->lines[i]->str, ctx->lines[i]->len);
				g_string_append_c(*out, '\n');
			}
		}
		break;
	}

	return SR_OK;
}

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

	if (!o)
		return SR_ERR_ARG;

	if (!(ctx = o->priv))
		return SR_OK;

	g_free(ctx->channel_index);
	g_free(ctx->sample_buf);
	g_free(ctx->channel_names);
	for (i = 0; i < ctx->num_enabled_channels; i++)
		g_string_free(ctx->lines[i], TRUE);
	g_free(ctx->lines);
	g_free(ctx);
	o->priv = NULL;

	return SR_OK;
}

static struct sr_option options[] = {
	{ "width", "Width", "Number of samples per line", NULL, NULL },
	ALL_ZERO
};

static const struct sr_option *get_options(void)
{
	if (!options[0].def) {
		options[0].def = g_variant_new_uint32(DEFAULT_SAMPLES_PER_LINE);
		g_variant_ref_sink(options[0].def);
	}

	return options;
}

SR_PRIV struct sr_output_module output_hex = {
	.id = "hex",
	.name = "Hexadecimal",
	.desc = "Hexadecimal digits",
	.exts = (const char*[]){"txt", 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) 2014 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 <libsigrok/libsigrok.h>
	24	#include "libsigrok-internal.h"
	25
	26	#define LOG_PREFIX "output/hex"
	27
	28	#define DEFAULT_SAMPLES_PER_LINE 192
	29
	30	struct context {
	31	unsigned int num_enabled_channels;
	32	int spl;
	33	int bit_cnt;
	34	int spl_cnt;
	35	int trigger;
	36	uint64_t samplerate;
	37	int *channel_index;
	38	char **channel_names;
	39	char **line_values;
	40	uint8_t *sample_buf;
	41	gboolean header_done;
	42	GString **lines;
	43	};
	44
	45	static int init(struct sr_output o, GHashTable options)
	46	{
	47	struct context *ctx;
	48	struct sr_channel *ch;
	49	GSList *l;
	50	unsigned int i, j;
	51
	52	if (!o \|\| !o->sdi)
	53	return SR_ERR_ARG;
	54
	55	ctx = g_malloc0(sizeof(struct context));
	56	o->priv = ctx;
	57	ctx->trigger = -1;
	58	ctx->spl = g_variant_get_uint32(g_hash_table_lookup(options, "width"));
	59
	60	for (l = o->sdi->channels; l; l = l->next) {
	61	ch = l->data;
	62	if (ch->type != SR_CHANNEL_LOGIC)
	63	continue;
	64	if (!ch->enabled)
	65	continue;
	66	ctx->num_enabled_channels++;
	67	}
	68	ctx->channel_index = g_malloc(sizeof(int) * ctx->num_enabled_channels);
	69	ctx->channel_names = g_malloc(sizeof(char ) ctx->num_enabled_channels);
	70	ctx->lines = g_malloc(sizeof(GString ) ctx->num_enabled_channels);
	71	ctx->sample_buf = g_malloc(ctx->num_enabled_channels);
	72
	73	j = 0;
	74	for (i = 0, l = o->sdi->channels; l; l = l->next, i++) {
	75	ch = l->data;
	76	if (ch->type != SR_CHANNEL_LOGIC)
	77	continue;
	78	if (!ch->enabled)
	79	continue;
	80	ctx->channel_index[j] = ch->index;
	81	ctx->channel_names[j] = ch->name;
	82	ctx->lines[j] = g_string_sized_new(80);
	83	ctx->sample_buf[j] = 0;
	84	g_string_printf(ctx->lines[j], "%s:", ch->name);
	85	j++;
	86	}
	87
	88	return SR_OK;
	89	}
	90
	91	static GString gen_header(const struct sr_output o)
	92	{
	93	struct context *ctx;
	94	GVariant *gvar;
	95	GString *header;
	96	int num_channels;
	97	char *samplerate_s;
	98
	99	ctx = o->priv;
	100	if (ctx->samplerate == 0) {
	101	if (sr_config_get(o->sdi->driver, o->sdi, NULL, SR_CONF_SAMPLERATE,
	102	&gvar) == SR_OK) {
	103	ctx->samplerate = g_variant_get_uint64(gvar);
	104	g_variant_unref(gvar);
	105	}
	106	}
	107
	108	header = g_string_sized_new(512);
	109	g_string_printf(header, "%s\n", PACKAGE_STRING);
	110	num_channels = g_slist_length(o->sdi->channels);
	111	g_string_append_printf(header, "Acquisition with %d/%d channels",
	112	ctx->num_enabled_channels, num_channels);
	113	if (ctx->samplerate != 0) {
	114	samplerate_s = sr_samplerate_string(ctx->samplerate);
	115	g_string_append_printf(header, " at %s", samplerate_s);
	116	g_free(samplerate_s);
	117	}
	118	g_string_append_printf(header, "\n");
	119
	120	return header;
	121	}
	122
	123	static int receive(const struct sr_output o, const struct sr_datafeed_packet packet,
	124	GString **out)
	125	{
	126	const struct sr_datafeed_meta *meta;
	127	const struct sr_datafeed_logic *logic;
	128	const struct sr_config *src;
	129	GSList *l;
	130	struct context *ctx;
	131	int idx, pos, offset;
	132	uint64_t i, j;
	133	gchar *p;
	134
	135	*out = NULL;
	136	if (!o \|\| !o->sdi)
	137	return SR_ERR_ARG;
	138	if (!(ctx = o->priv))
	139	return SR_ERR_ARG;
	140
	141	switch (packet->type) {
	142	case SR_DF_META:
	143	meta = packet->payload;
	144	for (l = meta->config; l; l = l->next) {
	145	src = l->data;
	146	if (src->key != SR_CONF_SAMPLERATE)
	147	continue;
	148	ctx->samplerate = g_variant_get_uint64(src->data);
	149	}
	150	break;
	151	case SR_DF_TRIGGER:
	152	ctx->trigger = ctx->spl_cnt;
	153	break;
	154	case SR_DF_LOGIC:
	155	if (!ctx->header_done) {
	156	*out = gen_header(o);
	157	ctx->header_done = TRUE;
	158	} else
	159	*out = g_string_sized_new(512);
	160
	161	logic = packet->payload;
	162	for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) {
	163	ctx->spl_cnt++;
	164	pos = ctx->spl_cnt & 7;
	165	for (j = 0; j < ctx->num_enabled_channels; j++) {
	166	idx = ctx->channel_index[j];
	167	p = logic->data + i + idx / 8;
	168	ctx->sample_buf[j] <<= 1;
	169	if (*p & (1 << (idx % 8)))
	170	ctx->sample_buf[j] \|= 1;
	171	if (ctx->spl_cnt && pos == 0) {
	172	/* Buffered a byte's worth, output hex. */
	173	g_string_append_printf(ctx->lines[j], "%.2x ",
	174	ctx->sample_buf[j]);
	175	ctx->sample_buf[j] = 0;
	176	}
	177
	178	if (ctx->spl_cnt == ctx->spl) {
	179	/* Flush line buffers. */
	180	g_string_append_len(*out, ctx->lines[j]->str, ctx->lines[j]->len);
	181	g_string_append_c(*out, '\n');
	182	if (j == ctx->num_enabled_channels - 1 && ctx->trigger > -1) {
	183	offset = ctx->trigger + ctx->trigger / 8;
	184	g_string_append_printf(out, "T:%s^ %d\n", offset, "", ctx->trigger);
	185	ctx->trigger = -1;
	186	}
	187	g_string_printf(ctx->lines[j], "%s:", ctx->channel_names[j]);
	188	}
	189	}
	190	if (ctx->spl_cnt == ctx->spl)
	191	/* Line buffers were already flushed. */
	192	ctx->spl_cnt = 0;
	193	}
	194	break;
	195	case SR_DF_END:
	196	if (ctx->spl_cnt) {
	197	/* Line buffers need flushing. */
	198	*out = g_string_sized_new(512);
	199	for (i = 0; i < ctx->num_enabled_channels; i++) {
	200	if (ctx->spl_cnt & 7)
	201	g_string_append_printf(ctx->lines[i], "%.2x ",
	202	ctx->sample_buf[i] << (8 - (ctx->spl_cnt & 7)));
	203	g_string_append_len(*out, ctx->lines[i]->str, ctx->lines[i]->len);
	204	g_string_append_c(*out, '\n');
	205	}
	206	}
	207	break;
	208	}
	209
	210	return SR_OK;
	211	}
	212
	213	static int cleanup(struct sr_output *o)
	214	{
	215	struct context *ctx;
	216	unsigned int i;
	217
	218	if (!o)
	219	return SR_ERR_ARG;
	220
	221	if (!(ctx = o->priv))
	222	return SR_OK;
	223
	224	g_free(ctx->channel_index);
	225	g_free(ctx->sample_buf);
	226	g_free(ctx->channel_names);
	227	for (i = 0; i < ctx->num_enabled_channels; i++)
	228	g_string_free(ctx->lines[i], TRUE);
	229	g_free(ctx->lines);
	230	g_free(ctx);
	231	o->priv = NULL;
	232
	233	return SR_OK;
	234	}
	235
	236	static struct sr_option options[] = {
	237	{ "width", "Width", "Number of samples per line", NULL, NULL },
	238	ALL_ZERO
	239	};
	240
	241	static const struct sr_option *get_options(void)
	242	{
	243	if (!options[0].def) {
	244	options[0].def = g_variant_new_uint32(DEFAULT_SAMPLES_PER_LINE);
	245	g_variant_ref_sink(options[0].def);
	246	}
	247
	248	return options;
	249	}
	250
	251	SR_PRIV struct sr_output_module output_hex = {
	252	.id = "hex",
	253	.name = "Hexadecimal",
	254	.desc = "Hexadecimal digits",
	255	.exts = (const char*[]){"txt", NULL},
	256	.flags = 0,
	257	.options = get_options,
	258	.init = init,
	259	.receive = receive,
	260	.cleanup = cleanup,
	261	};