+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2011 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"
-
-#define LOG_PREFIX "output/csv"
-
-struct context {
- unsigned int num_enabled_channels;
- uint64_t samplerate;
- char separator;
- gboolean header_done;
- int *channel_index;
-};
-
-/*
- * TODO:
- * - Option to specify delimiter character and/or string.
- * - Option to (not) print metadata as comments.
- * - Option to specify the comment character(s), e.g. # or ; or C/C++-style.
- * - Option to (not) print samplenumber / time as extra column.
- * - Option to "compress" output (only print changed samples, VCD-like).
- * - Option to print comma-separated bits, or whole bytes/words (for 8/16
- * channel LAs) as ASCII/hex etc. etc.
- * - Trigger support.
- */
-
-static int init(struct sr_output *o)
-{
- struct context *ctx;
- struct sr_channel *ch;
- GSList *l;
- int i;
-
- if (!o || !o->sdi)
- return SR_ERR_ARG;
-
- ctx = g_malloc0(sizeof(struct context));
- o->internal = ctx;
- ctx->separator = ',';
-
- /* Get the number of channels, and the unitsize. */
- 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);
-
- /* 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;
- GSList *l;
- time_t t;
- int num_channels, i;
- char *samplerate_s;
-
- ctx = o->internal;
- header = g_string_sized_new(512);
-
- /* Some metadata */
- t = time(NULL);
- g_string_append_printf(header, "; CSV, generated by %s on %s",
- PACKAGE_STRING, ctime(&t));
-
- /* Columns / channels */
- num_channels = g_slist_length(o->sdi->channels);
- g_string_append_printf(header, "; Channels (%d/%d):",
- ctx->num_enabled_channels, num_channels);
- 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;
- g_string_append_printf(header, " %s,", ch->name);
- }
- if (o->sdi->channels)
- /* Drop last separator. */
- g_string_truncate(header, header->len - 1);
- g_string_append_printf(header, "\n");
-
- 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);
- }
- }
- if (ctx->samplerate != 0) {
- samplerate_s = sr_samplerate_string(ctx->samplerate);
- g_string_append_printf(header, "; Samplerate: %s\n", samplerate_s);
- g_free(samplerate_s);
- }
-
- 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;
- int idx;
- uint64_t i, j;
- gchar *p, c;
-
- *out = NULL;
- if (!o || !o->sdi)
- return SR_ERR_ARG;
- if (!(ctx = o->internal))
- 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_LOGIC:
- logic = packet->payload;
- 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) {
- for (j = 0; j < ctx->num_enabled_channels; j++) {
- idx = ctx->channel_index[j];
- p = logic->data + i + idx / 8;
- c = *p & (1 << (idx % 8));
- g_string_append_c(*out, c ? '1' : '0');
- g_string_append_c(*out, ctx->separator);
- }
- if (j) {
- /* Drop last separator. */
- g_string_truncate(*out, (*out)->len - 1);
- }
- g_string_append_printf(*out, "\n");
- }
- break;
- }
-
- return SR_OK;
-}
-
-static int cleanup(struct sr_output *o)
-{
- struct context *ctx;
-
- if (!o || !o->sdi)
- return SR_ERR_ARG;
-
- if (o->internal) {
- ctx = o->internal;
- g_free(ctx->channel_index);
- g_free(o->internal);
- o->internal = NULL;
- }
-
- return SR_OK;
-}
-
-SR_PRIV struct sr_output_format output_csv = {
- .id = "csv",
- .description = "Comma-separated values (CSV)",
- .init = init,
- .receive = receive,
- .cleanup = cleanup,
-};
projects / libsigrok.git / blobdiff