X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=output%2Fgnuplot.c;h=631fefdaa3535e5ca7283138c1f22486bf54e203;hb=HEAD;hp=33a3ee0af305c6810b81c1f8ccb19072d854014a;hpb=dba3e6826e3d37309ed49dd77cde346b369bc5a9;p=libsigrok.git diff --git a/output/gnuplot.c b/output/gnuplot.c deleted file mode 100644 index 33a3ee0a..00000000 --- a/output/gnuplot.c +++ /dev/null @@ -1,222 +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 samplecount; - GString *header; - uint8_t *prevsample; - int *channel_index; -}; - -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\tChannel\n\ -# -------------------------------------\ -----------------------------------------\n\ -# 0\t\tSample counter (for internal gnuplot purposes)\n%s\n"; - -static const char *gnuplot_header_comment = "\ -# Comment: Acquisition with %d/%d channels at %s\n"; - -static int init(struct sr_output *o) -{ - struct context *ctx; - struct sr_channel *ch; - GSList *l; - GVariant *gvar; - uint64_t samplerate; - unsigned int i, j; - int num_channels; - char *c, *frequency_s; - char wbuf[1000], comment[128]; - time_t t; - - if (!o) - return SR_ERR_ARG; - - if (!o->sdi) - return SR_ERR_ARG; - - if (!(ctx = g_malloc0(sizeof(struct context)))) - return SR_ERR_MALLOC; - - 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); - - num_channels = g_slist_length(o->sdi->channels); - comment[0] = '\0'; - samplerate = 0; - if (sr_config_get(o->sdi->driver, o->sdi, NULL, SR_CONF_SAMPLERATE, - &gvar) == SR_OK) { - samplerate = g_variant_get_uint64(gvar); - g_variant_unref(gvar); - if (!(frequency_s = sr_samplerate_string(samplerate))) { - sr_err("%s: sr_samplerate_string failed", __func__); - g_free(ctx); - return SR_ERR; - } - snprintf(comment, 127, gnuplot_header_comment, - ctx->num_enabled_channels, num_channels, frequency_s); - g_free(frequency_s); - } - - /* Columns / channels */ - wbuf[0] = '\0'; - for (i = 0, j = 0, l = o->sdi->channels; l; l = l->next, i++) { - ch = l->data; - if (ch->type != SR_CHANNEL_LOGIC) - continue; - if (!ch->enabled) - continue; - c = (char *)&wbuf + strlen((const char *)&wbuf); - sprintf(c, "# %d\t\t%s\n", i + 1, ch->name); - /* Remember the enabled channel's index while we're at it. */ - ctx->channel_index[j++] = i; - } - - if (!(frequency_s = sr_period_string(samplerate))) { - sr_err("%s: sr_period_string failed", __func__); - g_free(ctx); - return SR_ERR; - } - - t = time(NULL); - ctx->header = g_string_sized_new(512); - g_string_printf(ctx->header, gnuplot_header, PACKAGE_STRING, - ctime(&t), comment, frequency_s, (char *)&wbuf); - g_free(frequency_s); - - return 0; -} - -static int receive(struct sr_output *o, const struct sr_datafeed_packet *packet, - GString **out) -{ - const struct sr_datafeed_logic *logic; - 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_LOGIC) - return SR_OK; - logic = packet->payload; - - if (!ctx->prevsample) { - /* Can't allocate this until we know the stream's unitsize. */ - if (!(ctx->prevsample = g_malloc0(logic->unitsize))) { - g_free(ctx); - sr_err("%s: ctx->prevsample malloc failed", __func__); - return SR_ERR_MALLOC; - } - } - - if (ctx->header) { - /* The header is still here, this must be the first packet. */ - *out = ctx->header; - ctx->header = NULL; - ctx->samplecount = 0; - } 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); - if (ctx->header) - g_string_free(ctx->header, TRUE); - g_free(ctx); - - return SR_OK; -} - -SR_PRIV struct sr_output_format output_gnuplot = { - .id = "gnuplot", - .description = "Gnuplot", - .init = init, - .receive = receive, - .cleanup = cleanup, -};