150 lines
3.2 KiB
C
150 lines
3.2 KiB
C
/*
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* This file is part of the sigrok project.
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*
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* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <glib.h>
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#include "config.h"
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#include "libsigrok.h"
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#include "libsigrok-internal.h"
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struct context {
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unsigned int num_enabled_probes;
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GPtrArray *probelist;
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};
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static int init(struct sr_output *o)
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{
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struct context *ctx;
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struct sr_probe *probe;
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GSList *l;
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if (!o)
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return SR_ERR_ARG;
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if (!o->dev)
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return SR_ERR_ARG;
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if (!o->dev->driver)
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return SR_ERR_ARG;
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if (!(ctx = g_try_malloc0(sizeof(struct context))))
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return SR_ERR_MALLOC;
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o->internal = ctx;
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/* Get the number of probes and their names. */
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ctx->probelist = g_ptr_array_new();
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for (l = o->dev->probes; l; l = l->next) {
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probe = l->data;
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if (!probe || !probe->enabled)
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continue;
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g_ptr_array_add(ctx->probelist, probe->name);
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ctx->num_enabled_probes++;
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}
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return SR_OK;
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}
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static int event(struct sr_output *o, int event_type, uint8_t **data_out,
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uint64_t *length_out)
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{
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struct context *ctx;
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if (!o)
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return SR_ERR_ARG;
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if (!(ctx = o->internal))
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return SR_ERR_ARG;
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if (!data_out)
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return SR_ERR_ARG;
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switch (event_type) {
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case SR_DF_FRAME_BEGIN:
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*data_out = (uint8_t *)g_strdup("FRAME-BEGIN\n");
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*length_out = 12;
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break;
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case SR_DF_FRAME_END:
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*data_out = (uint8_t *)g_strdup("FRAME-END\n");
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*length_out = 10;
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break;
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case SR_DF_END:
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*data_out = NULL;
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*length_out = 0;
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g_ptr_array_free(ctx->probelist, TRUE);
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g_free(o->internal);
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o->internal = NULL;
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break;
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default:
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/* Ignore everything else. */
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*data_out = NULL;
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*length_out = 0;
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break;
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}
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return SR_OK;
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}
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static int data(struct sr_output *o, const uint8_t *data_in,
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uint64_t length_in, uint8_t **data_out, uint64_t *length_out)
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{
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struct context *ctx;
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GString *outstr;
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float *fdata;
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uint64_t max, i;
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unsigned int j;
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if (!o)
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return SR_ERR_ARG;
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if (!(ctx = o->internal))
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return SR_ERR_ARG;
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if (!data_in || !data_out)
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return SR_ERR_ARG;
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outstr = g_string_sized_new(512);
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fdata = (float *)data_in;
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max = length_in / sizeof(float);
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for (i = 0; i < max;) {
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for (j = 0; j < ctx->num_enabled_probes; j++) {
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g_string_append_printf(outstr, "%s: %f\n",
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(char *)g_ptr_array_index(ctx->probelist, j),
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fdata[i++]);
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}
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}
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*data_out = (uint8_t *)outstr->str;
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*length_out = outstr->len;
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g_string_free(outstr, FALSE);
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return SR_OK;
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}
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SR_PRIV struct sr_output_format output_float = {
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.id = "float",
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.description = "Floating point",
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.df_type = SR_DF_ANALOG,
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.init = init,
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.data = data,
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.event = event,
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};
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