X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=output%2Fgnuplot.c;h=631fefdaa3535e5ca7283138c1f22486bf54e203;hb=HEAD;hp=a9feec67ba056f2f55daeed75990fca6eb1619e9;hpb=83023573d9a3c0fc1d5823d4dc5f9e85b72084d9;p=libsigrok.git diff --git a/output/gnuplot.c b/output/gnuplot.c deleted file mode 100644 index a9feec67..00000000 --- a/output/gnuplot.c +++ /dev/null @@ -1,224 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2010 Uwe Hermann - * - * 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 -#include -#include -#include "config.h" /* Needed for PACKAGE_STRING and others. */ -#include "libsigrok.h" -#include "libsigrok-internal.h" - -#define LOG_PREFIX "output/gnuplot" - -struct context { - unsigned int num_enabled_channels; - uint64_t samplerate; - uint64_t samplecount; - gboolean header_done; - uint8_t *prevsample; - int *channel_index; -}; - -static const char *gnuplot_header = "\ -# Sample data in space-separated columns format usable by gnuplot.\n"; -static const char *gnuplot_header2 = "\ -#\n# Column\tChannel\n\ -# -----------------------------------------------------------------------------\n\ -# 0\t\tSample counter (for internal gnuplot purposes)\n"; - - -static int init(struct sr_output *o) -{ - struct context *ctx; - struct sr_channel *ch; - GSList *l; - unsigned int i; - - if (!o || !o->sdi) - return SR_ERR_ARG; - - ctx = g_malloc0(sizeof(struct context)); - o->internal = ctx; - ctx->num_enabled_channels = 0; - 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++; - } - if (ctx->num_enabled_channels <= 0) { - sr_err("No logic channel enabled."); - return SR_ERR; - } - ctx->channel_index = g_malloc(sizeof(int) * ctx->num_enabled_channels); - - /* Once more to map the enabled channels. */ - for (i = 0, l = o->sdi->channels; l; l = l->next) { - ch = l->data; - if (ch->type != SR_CHANNEL_LOGIC) - continue; - if (!ch->enabled) - continue; - ctx->channel_index[i++] = ch->index; - } - - return SR_OK; -} - -static GString *gen_header(struct sr_output *o) -{ - struct context *ctx; - struct sr_channel *ch; - GVariant *gvar; - GString *header; - time_t t; - unsigned int num_channels, i; - char *samplerate_s; - - ctx = o->internal; - 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); - } - } - - t = time(NULL); - header = g_string_sized_new(512); - g_string_printf(header, "%s", gnuplot_header); - g_string_append_printf(header, "# Generated by %s on %s", - PACKAGE_STRING, ctime(&t)); - - 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"); - - g_string_append_printf(header, "%s", gnuplot_header2); - - /* Columns / channels */ - for (i = 0; i < ctx->num_enabled_channels; i++) { - ch = g_slist_nth_data(o->sdi->channels, ctx->channel_index[i]); - g_string_append_printf(header, "# %d\t\t%s\n", i + 1, ch->name); - } - - return header; -} - -static int receive(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; - const uint8_t *sample; - unsigned int curbit, p, idx, i; - - *out = NULL; - if (!o || !o->internal) - return SR_ERR_BUG; - ctx = o->internal; - - if (packet->type == 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); - } - } - - if (packet->type != SR_DF_LOGIC) - return SR_OK; - logic = packet->payload; - - if (!ctx->prevsample) { - /* Can't allocate this until we know the stream's unitsize. */ - ctx->prevsample = g_malloc0(logic->unitsize); - } - - if (!ctx->header_done) { - *out = gen_header(o); - ctx->header_done = TRUE; - } else { - *out = g_string_sized_new(512); - } - - for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) { - sample = logic->data + i; - ctx->samplecount++; - - /* - * Don't output the same sample multiple times, but make - * sure to output at least the first and last sample. - */ - if (i > 0 && i < logic->length - logic->unitsize) { - if (!memcmp(sample, ctx->prevsample, logic->unitsize)) - continue; - } - memcpy(ctx->prevsample, sample, logic->unitsize); - - /* The first column is a counter (needed for gnuplot). */ - g_string_append_printf(*out, "%" PRIu64 "\t", ctx->samplecount); - - /* The next columns are the values of all channels. */ - for (p = 0; p < ctx->num_enabled_channels; p++) { - idx = ctx->channel_index[p]; - curbit = (sample[idx / 8] & ((uint8_t) (1 << (idx % 8)))) >> (idx % 8); - g_string_append_printf(*out, "%d ", curbit); - } - g_string_append_printf(*out, "\n"); - } - - return SR_OK; -} - -static int cleanup(struct sr_output *o) -{ - struct context *ctx; - - if (!o || !o->internal) - return SR_ERR_BUG; - ctx = o->internal; - g_free(ctx->channel_index); - g_free(ctx->prevsample); - g_free(ctx); - - return SR_OK; -} - -SR_PRIV struct sr_output_format output_gnuplot = { - .id = "gnuplot", - .description = "Gnuplot", - .init = init, - .receive = receive, - .cleanup = cleanup, -};