2 * This file is part of the libsigrok project.
4 * Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de>
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 2 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/>.
25 #include <libsigrok/libsigrok.h>
26 #include "libsigrok-internal.h"
28 #define LOG_PREFIX "input/chronovu-la8"
30 #define DEFAULT_NUM_CHANNELS 8
31 #define DEFAULT_SAMPLERATE SR_MHZ(100)
32 #define CHUNK_SIZE (4 * 1024 * 1024)
33 #define CHRONOVU_LA8_FILESIZE ((8 * 1024 * 1024) + 5)
40 static int format_match(GHashTable *metadata)
44 size = GPOINTER_TO_INT(g_hash_table_lookup(metadata,
45 GINT_TO_POINTER(SR_INPUT_META_FILESIZE)));
46 if (size == CHRONOVU_LA8_FILESIZE)
52 static int init(struct sr_input *in, GHashTable *options)
58 num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels"));
59 if (num_channels < 1) {
60 sr_err("Invalid value for numchannels: must be at least 1.");
64 in->sdi = g_malloc0(sizeof(struct sr_dev_inst));
65 in->priv = inc = g_malloc0(sizeof(struct context));
67 inc->samplerate = g_variant_get_uint64(g_hash_table_lookup(options, "samplerate"));
69 for (i = 0; i < num_channels; i++) {
70 snprintf(name, sizeof(name), "%d", i);
71 sr_channel_new(in->sdi, i, SR_CHANNEL_LOGIC, TRUE, name);
77 static int process_buffer(struct sr_input *in)
79 struct sr_datafeed_packet packet;
80 struct sr_datafeed_meta meta;
81 struct sr_datafeed_logic logic;
82 struct sr_config *src;
89 std_session_send_df_header(in->sdi);
91 if (inc->samplerate) {
92 packet.type = SR_DF_META;
93 packet.payload = &meta;
94 src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(inc->samplerate));
95 meta.config = g_slist_append(NULL, src);
96 sr_session_send(in->sdi, &packet);
97 g_slist_free(meta.config);
104 packet.type = SR_DF_LOGIC;
105 packet.payload = &logic;
106 logic.unitsize = (g_slist_length(in->sdi->channels) + 7) / 8;
108 /* Cut off at multiple of unitsize. */
109 chunk_size = in->buf->len / logic.unitsize * logic.unitsize;
111 for (i = 0; i < chunk_size; i += chunk) {
112 logic.data = in->buf->str + i;
113 chunk = MIN(CHUNK_SIZE, chunk_size - i);
114 logic.length = chunk;
115 sr_session_send(in->sdi, &packet);
117 g_string_erase(in->buf, 0, chunk_size);
122 static int receive(struct sr_input *in, GString *buf)
126 g_string_append_len(in->buf, buf->str, buf->len);
128 if (!in->sdi_ready) {
129 /* sdi is ready, notify frontend. */
130 in->sdi_ready = TRUE;
134 ret = process_buffer(in);
139 static int end(struct sr_input *in)
145 ret = process_buffer(in);
151 std_session_send_df_end(in->sdi);
156 static int reset(struct sr_input *in)
158 struct context *inc = in->priv;
160 inc->started = FALSE;
161 g_string_truncate(in->buf, 0);
166 static struct sr_option options[] = {
167 { "numchannels", "Number of logic channels", "The number of (logic) channels in the data", NULL, NULL },
168 { "samplerate", "Sample rate (Hz)", "The sample rate of the (logic) data in Hz", NULL, NULL },
172 static const struct sr_option *get_options(void)
174 if (!options[0].def) {
175 options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS));
176 options[1].def = g_variant_ref_sink(g_variant_new_uint64(DEFAULT_SAMPLERATE));
182 SR_PRIV struct sr_input_module input_chronovu_la8 = {
183 .id = "chronovu-la8",
184 .name = "ChronoVu LA8",
185 .desc = "ChronoVu LA8 native file format data",
186 .exts = (const char*[]){"kdt", NULL},
187 .metadata = { SR_INPUT_META_FILESIZE | SR_INPUT_META_REQUIRED },
188 .options = get_options,
189 .format_match = format_match,