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 /* Message logging helpers with subsystem-specific prefix string. */
35 #define LOG_PREFIX "output/ols: "
36 #define sr_log(l, s, args...) sr_log(l, LOG_PREFIX s, ## args)
37 #define sr_spew(s, args...) sr_spew(LOG_PREFIX s, ## args)
38 #define sr_dbg(s, args...) sr_dbg(LOG_PREFIX s, ## args)
39 #define sr_info(s, args...) sr_info(LOG_PREFIX s, ## args)
40 #define sr_warn(s, args...) sr_warn(LOG_PREFIX s, ## args)
41 #define sr_err(s, args...) sr_err(LOG_PREFIX s, ## args)
48 static int init(struct sr_output *o)
52 if (!(ctx = g_try_malloc(sizeof(struct context)))) {
53 sr_err("%s: ctx malloc failed", __func__);
64 static GString *gen_header(const struct sr_dev_inst *sdi, struct context *ctx)
66 struct sr_probe *probe;
70 int num_enabled_probes;
72 if (!ctx->samplerate && sr_config_get(sdi->driver, sdi, NULL,
73 SR_CONF_SAMPLERATE, &gvar) == SR_OK) {
74 ctx->samplerate = g_variant_get_uint64(gvar);
75 g_variant_unref(gvar);
78 num_enabled_probes = 0;
79 for (l = sdi->probes; l; l = l->next) {
85 s = g_string_sized_new(512);
86 g_string_append_printf(s, ";Rate: %"PRIu64"\n", ctx->samplerate);
87 g_string_append_printf(s, ";Channels: %d\n", num_enabled_probes);
88 g_string_append_printf(s, ";EnabledChannels: -1\n");
89 g_string_append_printf(s, ";Compressed: true\n");
90 g_string_append_printf(s, ";CursorEnabled: false\n");
95 static int receive(struct sr_output *o, const struct sr_dev_inst *sdi,
96 const struct sr_datafeed_packet *packet, GString **out)
99 const struct sr_datafeed_meta *meta;
100 const struct sr_datafeed_logic *logic;
101 const struct sr_config *src;
111 switch (packet->type) {
113 meta = packet->payload;
114 for (l = meta->config; l; l = l->next) {
116 if (src->key == SR_CONF_SAMPLERATE)
117 ctx->samplerate = g_variant_get_uint64(src->data);
121 logic = packet->payload;
122 if (ctx->num_samples == 0) {
123 /* First logic packet in the feed. */
124 *out = gen_header(sdi, ctx);
126 *out = g_string_sized_new(512);
127 for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) {
128 for (j = 0; j < logic->unitsize; j++) {
129 /* The OLS format wants the samples presented MSB first. */
130 c = *((uint8_t *)logic->data + i + logic->unitsize - 1 - j);
131 g_string_append_printf(*out, "%02x", c);
133 g_string_append_printf(*out, "@%"PRIu64"\n", ctx->num_samples++);
141 static int cleanup(struct sr_output *o)
155 SR_PRIV struct sr_output_format output_ols = {
157 .description = "OpenBench Logic Sniffer",
158 .df_type = SR_DF_LOGIC,