2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 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/>.
21 #include <sys/types.h>
26 #include "libsigrok.h"
27 #include "libsigrok-internal.h"
29 #define LOG_PREFIX "input/binary"
31 #define MAX_CHUNK_SIZE 4096
32 #define DEFAULT_NUM_CHANNELS 8
33 #define DEFAULT_SAMPLERATE 0
40 static int init(struct sr_input *in, GHashTable *options)
46 num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels"));
47 if (num_channels < 1) {
48 sr_err("Invalid value for numchannels: must be at least 1.");
52 in->sdi = g_malloc0(sizeof(struct sr_dev_inst));
53 in->priv = inc = g_malloc0(sizeof(struct context));
55 inc->samplerate = g_variant_get_uint64(g_hash_table_lookup(options, "samplerate"));
57 for (i = 0; i < num_channels; i++) {
58 snprintf(name, 16, "%d", i);
59 sr_channel_new(in->sdi, i, SR_CHANNEL_LOGIC, TRUE, name);
65 static int process_buffer(struct sr_input *in)
67 struct sr_datafeed_packet packet;
68 struct sr_datafeed_meta meta;
69 struct sr_datafeed_logic logic;
70 struct sr_config *src;
77 std_session_send_df_header(in->sdi, LOG_PREFIX);
79 if (inc->samplerate) {
80 packet.type = SR_DF_META;
81 packet.payload = &meta;
82 src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(inc->samplerate));
83 meta.config = g_slist_append(NULL, src);
84 sr_session_send(in->sdi, &packet);
91 packet.type = SR_DF_LOGIC;
92 packet.payload = &logic;
93 logic.unitsize = (g_slist_length(in->sdi->channels) + 7) / 8;
95 /* Cut off at multiple of unitsize. */
96 chunk_size = in->buf->len / logic.unitsize * logic.unitsize;
98 for (i = 0; i < chunk_size; i += chunk) {
99 logic.data = in->buf->str + i;
100 chunk = MIN(MAX_CHUNK_SIZE, chunk_size - i);
101 logic.length = chunk;
102 sr_session_send(in->sdi, &packet);
104 g_string_erase(in->buf, 0, chunk_size);
109 static int receive(struct sr_input *in, GString *buf)
113 g_string_append_len(in->buf, buf->str, buf->len);
115 if (!in->sdi_ready) {
116 /* sdi is ready, notify frontend. */
117 in->sdi_ready = TRUE;
121 ret = process_buffer(in);
126 static int end(struct sr_input *in)
129 struct sr_datafeed_packet packet;
133 ret = process_buffer(in);
139 packet.type = SR_DF_END;
140 sr_session_send(in->sdi, &packet);
146 static struct sr_option options[] = {
147 { "numchannels", "Number of channels", "Number of channels", NULL, NULL },
148 { "samplerate", "Sample rate", "Sample rate", NULL, NULL },
152 static struct sr_option *get_options(void)
154 if (!options[0].def) {
155 options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS));
156 options[1].def = g_variant_ref_sink(g_variant_new_uint64(DEFAULT_SAMPLERATE));
162 SR_PRIV struct sr_input_module input_binary = {
165 .desc = "Raw binary",
167 .options = get_options,