137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
/*
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* This file is part of the sigrok project.
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*
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* Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de>
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* Copyright (C) 2010-2012 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 2 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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* This implements version 1.3 of the output format for the OpenBench Logic
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* Sniffer "Alternative" Java client. Details:
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* https://github.com/jawi/ols/wiki/OLS-data-file-format
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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 "libsigrok.h"
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#include "libsigrok-internal.h"
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struct context {
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GString *header;
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uint64_t num_samples;
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unsigned int unitsize;
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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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uint64_t *samplerate, tmp;
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int num_enabled_probes;
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if (!(ctx = g_try_malloc(sizeof(struct context)))) {
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sr_err("ols out: %s: ctx malloc failed", __func__);
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return SR_ERR_MALLOC;
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}
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o->internal = ctx;
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ctx->num_samples = 0;
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num_enabled_probes = 0;
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for (l = o->sdi->probes; l; l = l->next) {
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probe = l->data;
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if (probe->enabled)
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num_enabled_probes++;
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}
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ctx->unitsize = (num_enabled_probes + 7) / 8;
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if (o->sdi->driver && sr_dev_has_hwcap(o->sdi, SR_HWCAP_SAMPLERATE))
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o->sdi->driver->info_get(SR_DI_CUR_SAMPLERATE,
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(const void **)&samplerate, o->sdi);
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else {
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tmp = 0;
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samplerate = &tmp;
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}
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ctx->header = g_string_sized_new(512);
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g_string_append_printf(ctx->header, ";Rate: %"PRIu64"\n", *samplerate);
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g_string_append_printf(ctx->header, ";Channels: %d\n", num_enabled_probes);
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g_string_append_printf(ctx->header, ";EnabledChannels: -1\n");
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g_string_append_printf(ctx->header, ";Compressed: true\n");
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g_string_append_printf(ctx->header, ";CursorEnabled: false\n");
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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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ctx = o->internal;
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if (ctx && event_type == SR_DF_END) {
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g_string_free(ctx->header, TRUE);
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g_free(o->internal);
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o->internal = NULL;
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}
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*data_out = NULL;
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*length_out = 0;
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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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GString *out;
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struct context *ctx;
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uint64_t sample;
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unsigned int i;
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ctx = o->internal;
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if (ctx->header) {
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/* first data packet */
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out = ctx->header;
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ctx->header = NULL;
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} else
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out = g_string_sized_new(512);
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for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) {
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sample = 0;
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memcpy(&sample, data_in + i, ctx->unitsize);
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g_string_append_printf(out, "%08x@%"PRIu64"\n",
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(uint32_t) sample, ctx->num_samples++);
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}
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*data_out = (uint8_t *)out->str;
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*length_out = out->len;
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g_string_free(out, FALSE);
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return SR_OK;
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}
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SR_PRIV struct sr_output_format output_ols = {
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.id = "ols",
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.description = "OpenBench Logic Sniffer",
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.df_type = SR_DF_LOGIC,
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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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