2 * This file is part of the libsigrok project.
4 * Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de>
5 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
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 2 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, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 * This implements version 1.3 of the output format for the OpenBench Logic
24 * Sniffer "Alternative" Java client. Details:
25 * https://github.com/jawi/ols/wiki/OLS-data-file-format
31 #include "libsigrok.h"
32 #include "libsigrok-internal.h"
34 #define LOG_PREFIX "output/ols"
41 static int init(struct sr_output *o)
45 if (!(ctx = g_try_malloc(sizeof(struct context)))) {
46 sr_err("%s: ctx malloc failed", __func__);
57 static GString *gen_header(const struct sr_dev_inst *sdi, struct context *ctx)
59 struct sr_probe *probe;
63 int num_enabled_probes;
65 if (!ctx->samplerate && sr_config_get(sdi->driver, sdi, NULL,
66 SR_CONF_SAMPLERATE, &gvar) == SR_OK) {
67 ctx->samplerate = g_variant_get_uint64(gvar);
68 g_variant_unref(gvar);
71 num_enabled_probes = 0;
72 for (l = sdi->probes; l; l = l->next) {
78 s = g_string_sized_new(512);
79 g_string_append_printf(s, ";Rate: %"PRIu64"\n", ctx->samplerate);
80 g_string_append_printf(s, ";Channels: %d\n", num_enabled_probes);
81 g_string_append_printf(s, ";EnabledChannels: -1\n");
82 g_string_append_printf(s, ";Compressed: true\n");
83 g_string_append_printf(s, ";CursorEnabled: false\n");
88 static int receive(struct sr_output *o, const struct sr_dev_inst *sdi,
89 const struct sr_datafeed_packet *packet, GString **out)
92 const struct sr_datafeed_meta *meta;
93 const struct sr_datafeed_logic *logic;
94 const struct sr_config *src;
104 switch (packet->type) {
106 meta = packet->payload;
107 for (l = meta->config; l; l = l->next) {
109 if (src->key == SR_CONF_SAMPLERATE)
110 ctx->samplerate = g_variant_get_uint64(src->data);
114 logic = packet->payload;
115 if (ctx->num_samples == 0) {
116 /* First logic packet in the feed. */
117 *out = gen_header(sdi, ctx);
119 *out = g_string_sized_new(512);
120 for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) {
121 for (j = 0; j < logic->unitsize; j++) {
122 /* The OLS format wants the samples presented MSB first. */
123 c = *((uint8_t *)logic->data + i + logic->unitsize - 1 - j);
124 g_string_append_printf(*out, "%02x", c);
126 g_string_append_printf(*out, "@%"PRIu64"\n", ctx->num_samples++);
134 static int cleanup(struct sr_output *o)
148 SR_PRIV struct sr_output_format output_ols = {
150 .description = "OpenBench Logic Sniffer",
151 .df_type = SR_DF_LOGIC,