114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/*
|
|
* This file is part of the libsigrok project.
|
|
*
|
|
* Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
|
|
* Copyright (C) 2011 Håvard Espeland <gus@ping.uio.no>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <glib.h>
|
|
#include "libsigrok.h"
|
|
#include "libsigrok-internal.h"
|
|
#include "text.h"
|
|
|
|
#define LOG_PREFIX "output/bits"
|
|
|
|
SR_PRIV int init_bits(struct sr_output *o)
|
|
{
|
|
return init(o, DEFAULT_BPL_BITS, MODE_BITS);
|
|
}
|
|
|
|
SR_PRIV int data_bits(struct sr_output *o, const uint8_t *data_in,
|
|
uint64_t length_in, uint8_t **data_out,
|
|
uint64_t *length_out)
|
|
{
|
|
struct context *ctx;
|
|
unsigned int outsize, offset, p;
|
|
int max_linelen;
|
|
const uint8_t *sample;
|
|
uint8_t *outbuf, c;
|
|
|
|
ctx = o->internal;
|
|
max_linelen = SR_MAX_PROBENAME_LEN + 3 + ctx->samples_per_line
|
|
+ ctx->samples_per_line / 8;
|
|
/*
|
|
* Calculate space needed for probes. Set aside 512 bytes for
|
|
* extra output, e.g. trigger.
|
|
*/
|
|
outsize = 512 + (1 + (length_in / ctx->unitsize) / ctx->samples_per_line)
|
|
* (ctx->num_enabled_probes * max_linelen);
|
|
|
|
if (!(outbuf = g_try_malloc0(outsize + 1))) {
|
|
sr_err("%s: outbuf malloc failed", __func__);
|
|
return SR_ERR_MALLOC;
|
|
}
|
|
|
|
outbuf[0] = '\0';
|
|
if (ctx->header) {
|
|
/* The header is still here, this must be the first packet. */
|
|
strncpy((char *)outbuf, ctx->header, outsize);
|
|
g_free(ctx->header);
|
|
ctx->header = NULL;
|
|
}
|
|
|
|
if (length_in >= ctx->unitsize) {
|
|
for (offset = 0; offset <= length_in - ctx->unitsize;
|
|
offset += ctx->unitsize) {
|
|
sample = data_in + offset;
|
|
for (p = 0; p < ctx->num_enabled_probes; p++) {
|
|
c = (sample[p / 8] & ((uint8_t) 1 << (p % 8))) ? '1' : '0';
|
|
ctx->linebuf[p * ctx->linebuf_len +
|
|
ctx->line_offset] = c;
|
|
}
|
|
ctx->line_offset++;
|
|
ctx->spl_cnt++;
|
|
|
|
/* Add a space every 8th bit. */
|
|
if ((ctx->spl_cnt & 7) == 0) {
|
|
for (p = 0; p < ctx->num_enabled_probes; p++)
|
|
ctx->linebuf[p * ctx->linebuf_len +
|
|
ctx->line_offset] = ' ';
|
|
ctx->line_offset++;
|
|
}
|
|
|
|
/* End of line. */
|
|
if (ctx->spl_cnt >= ctx->samples_per_line) {
|
|
flush_linebufs(ctx, outbuf);
|
|
ctx->line_offset = ctx->spl_cnt = 0;
|
|
ctx->mark_trigger = -1;
|
|
}
|
|
}
|
|
} else {
|
|
sr_info("Short buffer (length_in=%" PRIu64 ").", length_in);
|
|
}
|
|
|
|
*data_out = outbuf;
|
|
*length_out = strlen((const char *)outbuf);
|
|
|
|
return SR_OK;
|
|
}
|
|
|
|
SR_PRIV struct sr_output_format output_text_bits = {
|
|
.id = "bits",
|
|
.description = "Bits",
|
|
.df_type = SR_DF_LOGIC,
|
|
.init = init_bits,
|
|
.data = data_bits,
|
|
.event = event,
|
|
.cleanup = text_cleanup,
|
|
};
|