137 lines
3.8 KiB
C
137 lines
3.8 KiB
C
/*
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* This file is part of the libsigrok 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 subsystem-specific prefix string. */
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#define LOG_PREFIX "output/ascii: "
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#define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
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#define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
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#define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
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#define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
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#define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
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#define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
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SR_PRIV int init_ascii(struct sr_output *o)
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{
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return init(o, DEFAULT_BPL_ASCII, MODE_ASCII);
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}
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SR_PRIV int data_ascii(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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const uint8_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 / 8;
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/*
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* Calculate space needed for probes. Set aside 512 bytes for
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* extra output, e.g. trigger.
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*/
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outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line)
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* (ctx->num_enabled_probes * max_linelen);
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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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if (length_in >= ctx->unitsize) {
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for (offset = 0; offset <= length_in - ctx->unitsize;
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offset += ctx->unitsize) {
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sample = data_in + offset;
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char tmpval[ctx->num_enabled_probes];
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for (p = 0; p < ctx->num_enabled_probes; p++) {
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uint8_t curbit = (sample[p / 8] & ((uint8_t) 1 << (p % 8)));
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uint8_t prevbit = (ctx->prevsample[p / 8] &
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((uint8_t) 1 << (p % 8)));
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if (curbit < prevbit && ctx->line_offset > 0) {
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ctx->linebuf[p * ctx->linebuf_len +
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ctx->line_offset-1] = '\\';
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}
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if (curbit > prevbit) {
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tmpval[p] = '/';
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} else {
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if (curbit)
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tmpval[p] = '"';
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else
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tmpval[p] = '.';
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}
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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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ctx->mark_trigger = -1;
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}
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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] = tmpval[p];
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}
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ctx->line_offset++;
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ctx->spl_cnt++;
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memcpy(ctx->prevsample, sample, ctx->unitsize);
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}
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} else {
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sr_info("Short buffer (length_in=%" PRIu64 ").", length_in);
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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_ascii = {
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.id = "ascii",
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.description = "ASCII",
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.df_type = SR_DF_LOGIC,
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.init = init_ascii,
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.data = data_ascii,
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.event = event,
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};
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