2 * This file is part of the sigrok project.
4 * Copyright (C) 2011 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2011 HÃ¥vard Espeland <gus@ping.uio.no>
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "sigrok-internal.h"
28 SR_PRIV int init_bits(struct sr_output *o)
30 return init(o, DEFAULT_BPL_BITS, MODE_BITS);
33 SR_PRIV int data_bits(struct sr_output *o, const char *data_in,
34 uint64_t length_in, char **data_out, uint64_t *length_out)
37 unsigned int outsize, offset, p;
43 max_linelen = SR_MAX_PROBENAME_LEN + 3 + ctx->samples_per_line
44 + ctx->samples_per_line / 8;
46 * Calculate space needed for probes. Set aside 512 bytes for
47 * extra output, e.g. trigger.
49 outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line)
50 * (ctx->num_enabled_probes * max_linelen);
52 if (!(outbuf = g_try_malloc0(outsize + 1))) {
53 sr_err("bits out: %s: outbuf malloc failed", __func__);
59 /* The header is still here, this must be the first packet. */
60 strncpy(outbuf, ctx->header, outsize);
64 /* Ensure first transition. */
65 memcpy(&ctx->prevsample, data_in, ctx->unitsize);
66 ctx->prevsample = ~ctx->prevsample;
69 if (length_in >= ctx->unitsize) {
70 for (offset = 0; offset <= length_in - ctx->unitsize;
71 offset += ctx->unitsize) {
72 memcpy(&sample, data_in + offset, ctx->unitsize);
73 for (p = 0; p < ctx->num_enabled_probes; p++) {
74 c = (sample & ((uint64_t) 1 << p)) ? '1' : '0';
75 ctx->linebuf[p * ctx->linebuf_len +
76 ctx->line_offset] = c;
81 /* Add a space every 8th bit. */
82 if ((ctx->spl_cnt & 7) == 0) {
83 for (p = 0; p < ctx->num_enabled_probes; p++)
84 ctx->linebuf[p * ctx->linebuf_len +
85 ctx->line_offset] = ' ';
90 if (ctx->spl_cnt >= ctx->samples_per_line) {
91 flush_linebufs(ctx, outbuf);
92 ctx->line_offset = ctx->spl_cnt = 0;
93 ctx->mark_trigger = -1;
97 sr_info("short buffer (length_in=%" PRIu64 ")", length_in);
101 *length_out = strlen(outbuf);
106 SR_PRIV struct sr_output_format output_text_bits = {
108 .description = "Bits (takes argument, default 64)",
109 .df_type = SR_DF_LOGIC,