114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
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/*
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* This file is part of the sigrok project.
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*
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* Copyright (C) 2011 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 <sigrok.h>
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#include "text.h"
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int init_bits(struct output *o)
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{
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return init(o, DEFAULT_BPL_BITS, MODE_BITS);
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}
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int data_bits(struct output *o, char *data_in, uint64_t length_in,
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char **data_out, 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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char *outbuf, c;
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ctx = o->internal;
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max_linelen = 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 = calloc(1, outsize + 1)))
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return SIGROK_ERR_MALLOC;
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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(outbuf, ctx->header, outsize);
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free(ctx->header);
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ctx->header = NULL;
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/* Ensure first transition. */
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memcpy(&ctx->prevsample, data_in, ctx->unitsize);
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ctx->prevsample = ~ctx->prevsample;
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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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memcpy(&sample, data_in + offset, ctx->unitsize);
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for (p = 0; p < ctx->num_enabled_probes; p++) {
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c = (sample & ((uint64_t) 1 << p)) ? '1' : '0';
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ctx->linebuf[p * ctx->linebuf_len +
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ctx->line_offset] = c;
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}
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ctx->line_offset++;
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ctx->spl_cnt++;
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/* Add a space every 8th bit. */
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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] = ' ';
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ctx->line_offset++;
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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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}
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} else {
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g_message("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(outbuf);
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return SIGROK_OK;
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}
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struct output_format output_text_bits = {
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"bits",
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"Bits (takes argument, default 64)",
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DF_LOGIC,
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init_bits,
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data_bits,
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event,
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};
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