+++ /dev/null
-/*
- * This file is part of the libsigrok 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" /* Needed for PACKAGE_STRING and others. */
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-
-/* Message logging helpers with driver-specific prefix string. */
-#define DRIVER_LOG_DOMAIN "output/gnuplot: "
-#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args)
-#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args)
-#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args)
-#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args)
-#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args)
-#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args)
-
-struct context {
- unsigned int num_enabled_probes;
- unsigned int unitsize;
- char *header;
- uint8_t *old_sample;
-};
-
-#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;
- GVariant *gvar;
- 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("%s: o was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- if (!o->sdi) {
- sr_err("%s: o->sdi was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- if (!o->sdi->driver) {
- sr_err("%s: o->sdi->driver was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
- sr_err("%s: ctx malloc failed", __func__);
- return SR_ERR_MALLOC;
- }
-
- if (!(ctx->header = g_try_malloc0(MAX_HEADER_LEN + 1))) {
- sr_err("%s: ctx->header malloc failed", __func__);
- g_free(ctx);
- return SR_ERR_MALLOC;
- }
-
- o->internal = ctx;
- ctx->num_enabled_probes = 0;
- for (l = o->sdi->probes; l; l = l->next) {
- probe = l->data;
- if (probe->enabled)
- ctx->num_enabled_probes++;
- }
- ctx->unitsize = (ctx->num_enabled_probes + 7) / 8;
-
- num_probes = g_slist_length(o->sdi->probes);
- comment[0] = '\0';
- samplerate = 0;
- if (sr_dev_has_option(o->sdi, SR_CONF_SAMPLERATE)) {
- o->sdi->driver->config_get(SR_CONF_SAMPLERATE, &gvar, o->sdi);
- samplerate = g_variant_get_uint64(gvar);
- if (!(frequency_s = sr_samplerate_string(samplerate))) {
- sr_err("%s: sr_samplerate_string failed", __func__);
- g_free(ctx->header);
- g_free(ctx);
- g_variant_unref(gvar);
- return SR_ERR;
- }
- snprintf(comment, 127, gnuplot_header_comment,
- ctx->num_enabled_probes, num_probes, frequency_s);
- g_free(frequency_s);
- g_variant_unref(gvar);
- }
-
- /* Columns / channels */
- wbuf[0] = '\0';
- for (i = 0, l = o->sdi->probes; l; l = l->next, i++) {
- probe = l->data;
- if (!probe->enabled)
- continue;
- c = (char *)&wbuf + strlen((const char *)&wbuf);
- sprintf(c, "# %d\t\t%s\n", i + 1, probe->name);
- }
-
- if (!(frequency_s = sr_period_string(samplerate))) {
- sr_err("%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("%s: sprintf failed", __func__);
- g_free(ctx->header);
- g_free(ctx);
- return SR_ERR;
- }
-
- if (!(ctx->old_sample = g_try_malloc0(ctx->unitsize))) {
- sr_err("%s: ctx->old_sample malloc failed", __func__);
- g_free(ctx->header);
- g_free(ctx);
- return SR_ERR_MALLOC;
- }
-
- return 0;
-}
-
-static int event(struct sr_output *o, int event_type, uint8_t **data_out,
- uint64_t *length_out)
-{
- if (!o) {
- sr_err("%s: o was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- if (!data_out) {
- sr_err("%s: data_out was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- if (!length_out) {
- sr_err("%s: length_out was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- 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("%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 uint8_t *data_in,
- uint64_t length_in, uint8_t **data_out, uint64_t *length_out)
-{
- struct context *ctx;
- unsigned int max_linelen, outsize, p, curbit, i;
- const uint8_t *sample;
- static uint64_t samplecount = 0;
- uint8_t *outbuf, *c;
-
- if (!o) {
- sr_err("%s: o was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- if (!o->internal) {
- sr_err("%s: o->internal was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- if (!data_in) {
- sr_err("%s: data_in was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- if (!data_out) {
- sr_err("%s: data_out was NULL", __func__);
- return SR_ERR_ARG;
- }
-
- if (!length_out) {
- sr_err("%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("%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((char *)outbuf, ctx->header, outsize);
- g_free(ctx->header);
- ctx->header = NULL;
- }
-
- for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) {
-
- sample = data_in + i;
-
- /*
- * Don't output the same samples multiple times. However, make
- * sure to output at least the first and last sample.
- */
- if (samplecount++ != 0 &&
- !memcmp(sample, ctx->old_sample, ctx->unitsize)) {
- if (i != (length_in - ctx->unitsize))
- continue;
- }
- memcpy(ctx->old_sample, sample, ctx->unitsize);
-
- /* The first column is a counter (needed for gnuplot). */
- c = outbuf + strlen((const char *)outbuf);
- sprintf((char *)c, "%" PRIu64 "\t", samplecount++);
-
- /* The next columns are the values of all channels. */
- for (p = 0; p < ctx->num_enabled_probes; p++) {
- curbit = (sample[p / 8] & ((uint8_t) (1 << (p % 8)))) >> (p % 8);
- c = outbuf + strlen((const char *)outbuf);
- sprintf((char *)c, "%d ", curbit);
- }
-
- c = outbuf + strlen((const char *)outbuf);
- sprintf((char *)c, "\n");
- }
-
- *data_out = outbuf;
- *length_out = strlen((const char *)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,
-};
projects / libsigrok.git / blobdiff