2 * This file is part of the sigrok project.
4 * Copyright (C) 2011 Bert Vermeulen <bert@biot.com>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #define DEFAULT_SAMPLES_PER_LINE 10
33 unsigned int num_enabled_probes;
34 char *probelist[MAX_NUM_PROBES];
36 unsigned int unitsize;
45 static void flush_linebufs(struct context *ctx, char *outbuf)
47 static int max_probename_len = 0;
50 if (ctx->linebuf[0] == 0)
53 if (max_probename_len == 0) {
54 /* First time through... */
55 for (i = 0; ctx->probelist[i]; i++) {
56 len = strlen(ctx->probelist[i]);
57 if (len > max_probename_len)
58 max_probename_len = len;
62 for (i = 0; ctx->probelist[i]; i++) {
63 sprintf(outbuf + strlen(outbuf), "%*s:%s\n", max_probename_len,
64 ctx->probelist[i], ctx->linebuf + i * ctx->linebuf_len);
67 /* Mark trigger with a ^ character. */
68 if (ctx->mark_trigger != -1)
69 sprintf(outbuf + strlen(outbuf), "T:%*s^\n",
70 ctx->mark_trigger * (VALUE_LEN+1), "");
72 memset(ctx->linebuf, 0, i * ctx->linebuf_len);
75 static int init(struct output *o)
84 if (!(ctx = calloc(1, sizeof(struct context))))
85 return SIGROK_ERR_MALLOC;
87 if (!(ctx->header = malloc(512))) {
89 return SIGROK_ERR_MALLOC;
93 ctx->num_enabled_probes = 0;
94 ctx->mark_trigger = -1;
95 if (o->param && o->param[0]) {
96 ctx->samples_per_line = strtoul(o->param, NULL, 10);
97 if (ctx->samples_per_line < 1)
100 ctx->samples_per_line = DEFAULT_SAMPLES_PER_LINE;
102 for (l = o->device->probes; l; l = l->next) {
106 ctx->probelist[ctx->num_enabled_probes++] = probe->name;
108 ctx->unitsize = sizeof(double) * ctx->num_enabled_probes;
110 snprintf(ctx->header, 511, "%s\n", PACKAGE_STRING);
111 if (o->device->plugin) {
112 num_probes = g_slist_length(o->device->probes);
113 samplerate = *((uint64_t *) o->device->plugin->get_device_info(
114 o->device->plugin_index, DI_CUR_SAMPLERATE));
115 if (!(samplerate_s = sigrok_samplerate_string(samplerate))) {
120 snprintf(ctx->header + strlen(ctx->header),
121 511 - strlen(ctx->header),
122 "Acquisition with %d/%d probes at %s\n",
123 ctx->num_enabled_probes, num_probes, samplerate_s);
127 ctx->linebuf_len = MAX_PROBENAME_LEN + ctx->samples_per_line * VALUE_LEN
128 + ctx->samples_per_line + 4;
129 if (!(ctx->linebuf = calloc(1, ctx->num_enabled_probes * ctx->linebuf_len))) {
132 return SIGROK_ERR_MALLOC;
138 static int data(struct output *o, char *data_in, uint64_t length_in,
139 char **data_out, uint64_t *length_out)
143 unsigned int max_linelen, outsize, offset, p;
144 char *outbuf, s[VALUE_LEN+2];
147 max_linelen = MAX_PROBENAME_LEN + 3 + ctx->samples_per_line * VALUE_LEN
148 + ctx->samples_per_line / 8;
149 outsize = length_in / ctx->unitsize * ctx->num_enabled_probes
150 / ctx->samples_per_line * max_linelen + 512;
151 if (!(outbuf = calloc(1, outsize + 1)))
152 return SIGROK_ERR_MALLOC;
156 /* The header is still here, this must be the first packet. */
157 strncpy(outbuf, ctx->header, outsize);
162 if (length_in >= ctx->unitsize) {
163 for (offset = 0; offset <= length_in - ctx->unitsize;
164 offset += ctx->unitsize) {
165 for (p = 0; p < ctx->num_enabled_probes; p++) {
166 memcpy(&probe_sample, data_in + offset * p, sizeof(double));
167 snprintf(s, VALUE_LEN+2, "% 6.2f ", probe_sample);
168 strcat(ctx->linebuf + p * ctx->linebuf_len + ctx->line_offset, s);
169 ctx->line_offset += strlen(s);
174 if (ctx->spl_cnt >= ctx->samples_per_line) {
175 flush_linebufs(ctx, outbuf);
176 ctx->line_offset = ctx->spl_cnt = 0;
177 ctx->mark_trigger = -1;
183 g_message("short buffer (length_in=%" PRIu64 ")", length_in);
187 *length_out = strlen(outbuf);
192 static int event(struct output *o, int event_type, char **data_out,
193 uint64_t *length_out)
198 switch (event_type) {
200 ctx->mark_trigger = ctx->spl_cnt;
217 struct output_format output_analog = {
219 "Analog data (takes argument, default 10)",