]>
Commit | Line | Data |
---|---|---|
83e9d586 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
83e9d586 UH |
3 | * |
4 | * Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * | |
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. | |
10 | * | |
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. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <stdlib.h> | |
22 | #include <fcntl.h> | |
23 | #include <unistd.h> | |
36423d04 | 24 | #include <sys/stat.h> |
45c59c8b BV |
25 | #include "libsigrok.h" |
26 | #include "libsigrok-internal.h" | |
83e9d586 | 27 | |
b95dd761 | 28 | #define LOG_PREFIX "input/chronovu-la8" |
8e7f1cfd | 29 | |
02e24c0c | 30 | #define DEFAULT_NUM_CHANNELS 8 |
edd28877 | 31 | #define DEFAULT_SAMPLERATE 100000000L |
02e24c0c BV |
32 | #define MAX_CHUNK_SIZE 4096 |
33 | #define CHRONOVU_LA8_FILESIZE 8 * 1024 * 1024 + 5 | |
83e9d586 | 34 | |
02e24c0c BV |
35 | struct context { |
36 | gboolean started; | |
37 | uint64_t samplerate; | |
38 | }; | |
83e9d586 | 39 | |
02e24c0c | 40 | static int format_match(GHashTable *metadata) |
83e9d586 | 41 | { |
02e24c0c | 42 | int size; |
83e9d586 | 43 | |
02e24c0c BV |
44 | size = GPOINTER_TO_INT(g_hash_table_lookup(metadata, |
45 | GINT_TO_POINTER(SR_INPUT_META_FILESIZE))); | |
46 | if (size == CHRONOVU_LA8_FILESIZE) | |
4f979115 | 47 | return SR_OK; |
83e9d586 | 48 | |
4f979115 | 49 | return SR_ERR; |
83e9d586 UH |
50 | } |
51 | ||
02e24c0c | 52 | static int init(struct sr_input *in, GHashTable *options) |
83e9d586 | 53 | { |
ba7dd8bb | 54 | struct sr_channel *ch; |
02e24c0c | 55 | struct context *inc; |
ba7dd8bb | 56 | int num_channels, i; |
02e24c0c BV |
57 | char name[16]; |
58 | ||
59 | num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels")); | |
60 | if (num_channels < 1) { | |
61 | sr_err("Invalid value for numchannels: must be at least 1."); | |
62 | return SR_ERR_ARG; | |
63 | } | |
64 | ||
5c3c1241 | 65 | in->sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, NULL, NULL, NULL); |
02e24c0c | 66 | in->priv = inc = g_malloc0(sizeof(struct context)); |
edd28877 BV |
67 | |
68 | inc->samplerate = g_variant_get_uint64(g_hash_table_lookup(options, "samplerate")); | |
464d12c7 | 69 | |
ba7dd8bb | 70 | for (i = 0; i < num_channels; i++) { |
02e24c0c BV |
71 | snprintf(name, 16, "%d", i); |
72 | ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, name); | |
ba7dd8bb | 73 | in->sdi->channels = g_slist_append(in->sdi->channels, ch); |
464d12c7 | 74 | } |
83e9d586 UH |
75 | |
76 | return SR_OK; | |
77 | } | |
78 | ||
02e24c0c | 79 | static int receive(const struct sr_input *in, GString *buf) |
83e9d586 | 80 | { |
83e9d586 | 81 | struct sr_datafeed_packet packet; |
2df1e819 | 82 | struct sr_datafeed_meta meta; |
9c939c51 | 83 | struct sr_datafeed_logic logic; |
2df1e819 | 84 | struct sr_config *src; |
02e24c0c BV |
85 | struct context *inc; |
86 | gsize chunk_size, i; | |
87 | int chunk, num_channels; | |
83e9d586 | 88 | |
02e24c0c | 89 | inc = in->priv; |
83e9d586 | 90 | |
02e24c0c | 91 | g_string_append_len(in->buf, buf->str, buf->len); |
83e9d586 | 92 | |
02e24c0c | 93 | num_channels = g_slist_length(in->sdi->channels); |
83e9d586 | 94 | |
29a27196 | 95 | std_session_send_df_header(in->sdi, LOG_PREFIX); |
02e24c0c | 96 | inc->started = TRUE; |
f366e86c | 97 | |
2df1e819 | 98 | packet.type = SR_DF_META; |
f366e86c | 99 | packet.payload = &meta; |
02e24c0c | 100 | src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(inc->samplerate)); |
2df1e819 | 101 | meta.config = g_slist_append(NULL, src); |
5c3c1241 | 102 | sr_session_send(in->sdi, &packet); |
ec4063b8 | 103 | sr_config_free(src); |
83e9d586 | 104 | |
83e9d586 | 105 | packet.type = SR_DF_LOGIC; |
9c939c51 | 106 | packet.payload = &logic; |
ba7dd8bb | 107 | logic.unitsize = (num_channels + 7) / 8; |
02e24c0c BV |
108 | logic.data = in->buf->str; |
109 | ||
110 | /* Cut off at multiple of unitsize. */ | |
111 | chunk_size = in->buf->len / logic.unitsize * logic.unitsize; | |
83e9d586 | 112 | |
02e24c0c BV |
113 | chunk = 0; |
114 | for (i = 0; i < chunk_size; i += chunk) { | |
115 | chunk = MAX(MAX_CHUNK_SIZE, chunk_size - i); | |
116 | logic.length = chunk; | |
5c3c1241 | 117 | sr_session_send(in->sdi, &packet); |
83e9d586 | 118 | } |
83e9d586 | 119 | |
02e24c0c BV |
120 | if (in->buf->len > chunk_size) |
121 | g_string_erase(in->buf, 0, in->buf->len - chunk_size); | |
122 | ||
123 | return SR_OK; | |
124 | } | |
125 | ||
126 | static int cleanup(struct sr_input *in) | |
127 | { | |
128 | struct sr_datafeed_packet packet; | |
129 | struct context *inc; | |
130 | ||
131 | inc = in->priv; | |
132 | ||
133 | if (inc->started) { | |
134 | packet.type = SR_DF_END; | |
135 | sr_session_send(in->sdi, &packet); | |
136 | } | |
137 | g_free(in->priv); | |
138 | in->priv = NULL; | |
83e9d586 UH |
139 | |
140 | return SR_OK; | |
141 | } | |
142 | ||
02e24c0c BV |
143 | static struct sr_option options[] = { |
144 | { "numchannels", "Number of channels", "Number of channels", NULL, NULL }, | |
145 | { "samplerate", "Sample rate", "Sample rate", NULL, NULL }, | |
06ad20be | 146 | ALL_ZERO |
02e24c0c BV |
147 | }; |
148 | ||
149 | static struct sr_option *get_options(void) | |
150 | { | |
151 | if (!options[0].def) { | |
152 | options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS)); | |
edd28877 | 153 | options[1].def = g_variant_ref_sink(g_variant_new_uint64(DEFAULT_SAMPLERATE)); |
02e24c0c BV |
154 | } |
155 | ||
156 | return options; | |
157 | } | |
158 | ||
d4c93774 | 159 | SR_PRIV struct sr_input_module input_chronovu_la8 = { |
83e9d586 | 160 | .id = "chronovu-la8", |
02e24c0c | 161 | .name = "Chronovu-LA8", |
17bfaca6 | 162 | .desc = "ChronoVu LA8", |
02e24c0c BV |
163 | .metadata = { SR_INPUT_META_FILESIZE | SR_INPUT_META_REQUIRED }, |
164 | .options = get_options, | |
83e9d586 UH |
165 | .format_match = format_match, |
166 | .init = init, | |
02e24c0c BV |
167 | .receive = receive, |
168 | .cleanup = cleanup, | |
83e9d586 | 169 | }; |