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)
42 struct sr_channel *ch;
47 num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels"));
48 if (num_channels < 1) {
49 sr_err("Invalid value for numchannels: must be at least 1.");
53 in->sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, NULL, NULL, NULL);
54 in->priv = inc = g_malloc0(sizeof(struct context));
56 inc->samplerate = g_variant_get_uint64(g_hash_table_lookup(options, "samplerate"));
58 for (i = 0; i < num_channels; i++) {
59 snprintf(name, 16, "%d", i);
60 ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, name);
61 in->sdi->channels = g_slist_append(in->sdi->channels, ch);
67 static int receive(const struct sr_input *in, GString *buf)
69 struct sr_datafeed_packet packet;
70 struct sr_datafeed_meta meta;
71 struct sr_datafeed_logic logic;
72 struct sr_config *src;
75 int chunk, num_channels;
79 g_string_append_len(in->buf, buf->str, buf->len);
81 num_channels = g_slist_length(in->sdi->channels);
83 std_session_send_df_header(in->sdi, LOG_PREFIX);
86 packet.type = SR_DF_META;
87 packet.payload = &meta;
88 src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(inc->samplerate));
89 meta.config = g_slist_append(NULL, src);
90 sr_session_send(in->sdi, &packet);
93 packet.type = SR_DF_LOGIC;
94 packet.payload = &logic;
95 logic.unitsize = (num_channels + 7) / 8;
96 logic.data = in->buf->str;
98 /* Cut off at multiple of unitsize. */
99 chunk_size = in->buf->len / logic.unitsize * logic.unitsize;
102 for (i = 0; i < chunk_size; i += chunk) {
103 chunk = MAX(MAX_CHUNK_SIZE, chunk_size - i);
104 logic.length = chunk;
105 sr_session_send(in->sdi, &packet);
108 if (in->buf->len > chunk_size)
109 g_string_erase(in->buf, 0, in->buf->len - chunk_size);
114 static int cleanup(struct sr_input *in)
116 struct sr_datafeed_packet packet;
122 packet.type = SR_DF_END;
123 sr_session_send(in->sdi, &packet);
131 static struct sr_option options[] = {
132 { "numchannels", "Number of channels", "Number of channels", NULL, NULL },
133 { "samplerate", "Sample rate", "Sample rate", NULL, NULL },
137 static struct sr_option *get_options(void)
139 if (!options[0].def) {
140 options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS));
141 options[1].def = g_variant_ref_sink(g_variant_new_uint64(DEFAULT_SAMPLERATE));
147 SR_PRIV struct sr_input_module input_binary = {
150 .desc = "Raw binary",
151 .options = get_options,