2 * This file is part of the libsigrok project.
4 * Copyright (C) 2010-2012 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/>.
24 #include "libsigrok.h"
25 #include "libsigrok-internal.h"
28 /* Message logging helpers with subsystem-specific prefix string. */
29 #define LOG_PREFIX "output/ascii: "
30 #define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
31 #define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
32 #define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
33 #define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
34 #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
35 #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
37 SR_PRIV int init_ascii(struct sr_output *o)
39 return init(o, DEFAULT_BPL_ASCII, MODE_ASCII);
42 SR_PRIV int data_ascii(struct sr_output *o, const uint8_t *data_in,
43 uint64_t length_in, uint8_t **data_out,
47 unsigned int outsize, offset, p;
49 const uint8_t *sample;
53 max_linelen = SR_MAX_PROBENAME_LEN + 3 + ctx->samples_per_line
54 + ctx->samples_per_line / 8;
56 * Calculate space needed for probes. Set aside 512 bytes for
57 * extra output, e.g. trigger.
59 outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line)
60 * (ctx->num_enabled_probes * max_linelen);
62 if (!(outbuf = g_try_malloc0(outsize + 1))) {
63 sr_err("%s: outbuf malloc failed", __func__);
69 /* The header is still here, this must be the first packet. */
70 strncpy((char *)outbuf, ctx->header, outsize);
75 if (length_in >= ctx->unitsize) {
76 for (offset = 0; offset <= length_in - ctx->unitsize;
77 offset += ctx->unitsize) {
78 sample = data_in + offset;
80 char tmpval[ctx->num_enabled_probes];
82 for (p = 0; p < ctx->num_enabled_probes; p++) {
83 uint8_t curbit = (sample[p / 8] & ((uint8_t) 1 << (p % 8)));
84 uint8_t prevbit = (ctx->prevsample[p / 8] &
85 ((uint8_t) 1 << (p % 8)));
87 if (curbit < prevbit && ctx->line_offset > 0) {
88 ctx->linebuf[p * ctx->linebuf_len +
89 ctx->line_offset-1] = '\\';
92 if (curbit > prevbit) {
103 if (ctx->spl_cnt >= ctx->samples_per_line) {
104 flush_linebufs(ctx, outbuf);
105 ctx->line_offset = ctx->spl_cnt = 0;
106 ctx->mark_trigger = -1;
109 for (p = 0; p < ctx->num_enabled_probes; p++) {
110 ctx->linebuf[p * ctx->linebuf_len +
111 ctx->line_offset] = tmpval[p];
117 memcpy(ctx->prevsample, sample, ctx->unitsize);
120 sr_info("Short buffer (length_in=%" PRIu64 ").", length_in);
124 *length_out = strlen((const char *)outbuf);
129 SR_PRIV struct sr_output_format output_text_ascii = {
131 .description = "ASCII",
132 .df_type = SR_DF_LOGIC,
136 .cleanup = text_cleanup,