2 * This file is part of the libsigrok project.
4 * Copyright (C) 2014 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/>.
23 #include "libsigrok.h"
24 #include "libsigrok-internal.h"
26 #define LOG_PREFIX "output/bits"
28 #define DEFAULT_SAMPLES_PER_LINE 64
31 unsigned int num_enabled_channels;
42 static int init(struct sr_output *o, GHashTable *options)
45 struct sr_channel *ch;
55 spl = DEFAULT_SAMPLES_PER_LINE;
57 g_hash_table_iter_init(&iter, options);
58 while (g_hash_table_iter_next(&iter, &key, &value)) {
59 if (!strcmp(key, "width")) {
60 if (!g_variant_is_of_type(value, G_VARIANT_TYPE_UINT32)) {
61 sr_err("Invalid type for 'width' option.");
64 if (!(spl = g_variant_get_uint32(value))) {
65 sr_err("Invalid width.");
69 sr_err("Unknown option '%s'.", key);
74 ctx = g_malloc0(sizeof(struct context));
77 ctx->samples_per_line = spl;
79 for (l = o->sdi->channels; l; l = l->next) {
81 if (ch->type != SR_CHANNEL_LOGIC)
85 ctx->num_enabled_channels++;
87 ctx->channel_index = g_malloc(sizeof(int) * ctx->num_enabled_channels);
88 ctx->channel_names = g_malloc(sizeof(char *) * ctx->num_enabled_channels);
89 ctx->lines = g_malloc(sizeof(GString *) * ctx->num_enabled_channels);
92 for (i = 0, l = o->sdi->channels; l; l = l->next, i++) {
94 if (ch->type != SR_CHANNEL_LOGIC)
98 ctx->channel_index[j] = ch->index;
99 ctx->channel_names[j] = ch->name;
100 ctx->lines[j] = g_string_sized_new(80);
101 g_string_printf(ctx->lines[j], "%s:", ch->name);
108 static GString *gen_header(const struct sr_output *o)
117 if (ctx->samplerate == 0) {
118 if (sr_config_get(o->sdi->driver, o->sdi, NULL, SR_CONF_SAMPLERATE,
120 ctx->samplerate = g_variant_get_uint64(gvar);
121 g_variant_unref(gvar);
125 header = g_string_sized_new(512);
126 g_string_printf(header, "%s\n", PACKAGE_STRING);
127 num_channels = g_slist_length(o->sdi->channels);
128 g_string_append_printf(header, "Acquisition with %d/%d channels",
129 ctx->num_enabled_channels, num_channels);
130 if (ctx->samplerate != 0) {
131 samplerate_s = sr_samplerate_string(ctx->samplerate);
132 g_string_append_printf(header, " at %s", samplerate_s);
133 g_free(samplerate_s);
135 g_string_append_printf(header, "\n");
140 static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet,
143 const struct sr_datafeed_meta *meta;
144 const struct sr_datafeed_logic *logic;
145 const struct sr_config *src;
155 if (!(ctx = o->internal))
158 switch (packet->type) {
160 meta = packet->payload;
161 for (l = meta->config; l; l = l->next) {
163 if (src->key != SR_CONF_SAMPLERATE)
165 ctx->samplerate = g_variant_get_uint64(src->data);
169 ctx->trigger = ctx->spl_cnt;
172 if (!ctx->header_done) {
173 *out = gen_header(o);
174 ctx->header_done = TRUE;
176 *out = g_string_sized_new(512);
178 logic = packet->payload;
179 for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) {
181 for (j = 0; j < ctx->num_enabled_channels; j++) {
182 idx = ctx->channel_index[j];
183 p = logic->data + i + idx / 8;
184 c = (*p & (1 << (idx % 8))) ? '1' : '0';
185 g_string_append_c(ctx->lines[j], c);
187 if (ctx->spl_cnt == ctx->samples_per_line) {
188 /* Flush line buffers. */
189 g_string_append_len(*out, ctx->lines[j]->str, ctx->lines[j]->len);
190 g_string_append_c(*out, '\n');
191 if (j == ctx->num_enabled_channels - 1 && ctx->trigger > -1) {
192 offset = ctx->trigger + ctx->trigger / 8;
193 g_string_append_printf(*out, "T:%*s^ %d\n", offset, "", ctx->trigger);
196 g_string_printf(ctx->lines[j], "%s:", ctx->channel_names[j]);
197 } else if ((ctx->spl_cnt & 7) == 0) {
198 /* Add a space every 8th bit. */
199 g_string_append_c(ctx->lines[j], ' ');
202 if (ctx->spl_cnt == ctx->samples_per_line)
203 /* Line buffers were already flushed. */
209 /* Line buffers need flushing. */
210 *out = g_string_sized_new(512);
211 for (i = 0; i < ctx->num_enabled_channels; i++) {
212 g_string_append_len(*out, ctx->lines[i]->str, ctx->lines[i]->len);
213 g_string_append_c(*out, '\n');
222 static int cleanup(struct sr_output *o)
230 if (!(ctx = o->internal))
233 g_free(ctx->channel_index);
234 g_free(ctx->channel_names);
235 for (i = 0; i < ctx->num_enabled_channels; i++)
236 g_string_free(ctx->lines[i], TRUE);
244 static struct sr_option options[] = {
245 { "width", "Width", "Number of samples per line", NULL, NULL },
249 static struct sr_option *get_options(gboolean cached)
254 options[0].def = g_variant_new_uint32(DEFAULT_SAMPLES_PER_LINE);
255 g_variant_ref_sink(options[0].def);
260 SR_PRIV struct sr_output_module output_bits = {
263 .desc = "0/1 digits",
264 .options = get_options,