113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/*
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* This file is part of the sigrok project.
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*
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* Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
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* Copyright (C) 2011 Håvard Espeland <gus@ping.uio.no>
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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 "libsigrok.h"
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#include "libsigrok-internal.h"
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#include "text.h"
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/* Message logging helpers with driver-specific prefix string. */
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#define DRIVER_LOG_DOMAIN "output/hex: "
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#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args)
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#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args)
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#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args)
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#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args)
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#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args)
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#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args)
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SR_PRIV int init_hex(struct sr_output *o)
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{
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return init(o, DEFAULT_BPL_HEX, MODE_HEX);
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}
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SR_PRIV int data_hex(struct sr_output *o, const uint8_t *data_in,
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uint64_t length_in, 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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unsigned int outsize, offset, p;
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int max_linelen;
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uint64_t sample;
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uint8_t *outbuf;
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ctx = o->internal;
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max_linelen = SR_MAX_PROBENAME_LEN + 3 + ctx->samples_per_line
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+ ctx->samples_per_line / 2;
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outsize = length_in / ctx->unitsize * ctx->num_enabled_probes
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/ ctx->samples_per_line * max_linelen + 512;
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if (!(outbuf = g_try_malloc0(outsize + 1))) {
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sr_err("%s: outbuf malloc failed", __func__);
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return SR_ERR_MALLOC;
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}
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outbuf[0] = '\0';
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if (ctx->header) {
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/* The header is still here, this must be the first packet. */
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strncpy((char *)outbuf, ctx->header, outsize);
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g_free(ctx->header);
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ctx->header = NULL;
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}
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ctx->line_offset = 0;
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for (offset = 0; offset <= length_in - ctx->unitsize;
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offset += ctx->unitsize) {
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memcpy(&sample, data_in + offset, ctx->unitsize);
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for (p = 0; p < ctx->num_enabled_probes; p++) {
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ctx->linevalues[p] <<= 1;
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if (sample & ((uint64_t) 1 << p))
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ctx->linevalues[p] |= 1;
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sprintf((char *)ctx->linebuf + (p * ctx->linebuf_len) +
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ctx->line_offset, "%.2x", ctx->linevalues[p]);
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}
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ctx->spl_cnt++;
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/* Add a space after every complete hex byte. */
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if ((ctx->spl_cnt & 7) == 0) {
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for (p = 0; p < ctx->num_enabled_probes; p++)
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ctx->linebuf[p * ctx->linebuf_len +
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ctx->line_offset + 2] = ' ';
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ctx->line_offset += 3;
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}
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/* End of line. */
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if (ctx->spl_cnt >= ctx->samples_per_line) {
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flush_linebufs(ctx, outbuf);
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ctx->line_offset = ctx->spl_cnt = 0;
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}
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}
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*data_out = outbuf;
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*length_out = strlen((const char *)outbuf);
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return SR_OK;
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}
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SR_PRIV struct sr_output_format output_text_hex = {
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.id = "hex",
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.description = "Hexadecimal",
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.df_type = SR_DF_LOGIC,
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.init = init_hex,
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.data = data_hex,
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.event = event,
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};
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