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34e4813f | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
34e4813f | 3 | * |
13d8e03c | 4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> |
34e4813f BV |
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 3 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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
13a12913 | 20 | #include <stdlib.h> |
34e4813f BV |
21 | #include <sys/types.h> |
22 | #include <sys/stat.h> | |
23 | #include <fcntl.h> | |
24 | #include <unistd.h> | |
25 | #include <sys/time.h> | |
45c59c8b BV |
26 | #include "libsigrok.h" |
27 | #include "libsigrok-internal.h" | |
34e4813f | 28 | |
3544f848 | 29 | #define LOG_PREFIX "input/binary" |
8e7f1cfd | 30 | |
b84cba4d | 31 | #define MAX_CHUNK_SIZE 4096 |
3f239f08 | 32 | #define DEFAULT_NUM_CHANNELS 8 |
10288172 | 33 | #define DEFAULT_SAMPLERATE 0 |
13a12913 | 34 | |
c506a6a6 | 35 | struct context { |
b84cba4d | 36 | gboolean started; |
0d1297a2 | 37 | uint64_t samplerate; |
c506a6a6 TŠ |
38 | }; |
39 | ||
b84cba4d | 40 | static int init(struct sr_input *in, GHashTable *options) |
13a12913 | 41 | { |
ba7dd8bb | 42 | struct sr_channel *ch; |
b84cba4d | 43 | struct context *inc; |
ba7dd8bb | 44 | int num_channels, i; |
b84cba4d | 45 | char name[16]; |
543d45c5 | 46 | |
b84cba4d BV |
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."); | |
50 | return SR_ERR_ARG; | |
c506a6a6 | 51 | } |
13a12913 | 52 | |
5c3c1241 | 53 | in->sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, NULL, NULL, NULL); |
b84cba4d | 54 | in->priv = inc = g_malloc0(sizeof(struct context)); |
10288172 BV |
55 | |
56 | inc->samplerate = g_variant_get_uint64(g_hash_table_lookup(options, "samplerate")); | |
464d12c7 | 57 | |
ba7dd8bb | 58 | for (i = 0; i < num_channels; i++) { |
b84cba4d BV |
59 | snprintf(name, 16, "%d", i); |
60 | ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, name); | |
ba7dd8bb | 61 | in->sdi->channels = g_slist_append(in->sdi->channels, ch); |
464d12c7 | 62 | } |
13a12913 | 63 | |
e46b8fb1 | 64 | return SR_OK; |
13a12913 BV |
65 | } |
66 | ||
b84cba4d | 67 | static int receive(const struct sr_input *in, GString *buf) |
34e4813f | 68 | { |
b9c735a2 | 69 | struct sr_datafeed_packet packet; |
2df1e819 | 70 | struct sr_datafeed_meta meta; |
9c939c51 | 71 | struct sr_datafeed_logic logic; |
2df1e819 | 72 | struct sr_config *src; |
b84cba4d BV |
73 | struct context *inc; |
74 | gsize chunk_size, i; | |
75 | int chunk, num_channels; | |
c506a6a6 | 76 | |
b84cba4d | 77 | inc = in->priv; |
34e4813f | 78 | |
b84cba4d | 79 | g_string_append_len(in->buf, buf->str, buf->len); |
34e4813f | 80 | |
ba7dd8bb | 81 | num_channels = g_slist_length(in->sdi->channels); |
db91a1c3 | 82 | |
29a27196 | 83 | std_session_send_df_header(in->sdi, LOG_PREFIX); |
b84cba4d | 84 | inc->started = TRUE; |
34e4813f | 85 | |
b84cba4d BV |
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); | |
91 | sr_config_free(src); | |
f366e86c | 92 | |
5a2326a7 | 93 | packet.type = SR_DF_LOGIC; |
9c939c51 | 94 | packet.payload = &logic; |
ba7dd8bb | 95 | logic.unitsize = (num_channels + 7) / 8; |
b84cba4d BV |
96 | logic.data = in->buf->str; |
97 | ||
98 | /* Cut off at multiple of unitsize. */ | |
99 | chunk_size = in->buf->len / logic.unitsize * logic.unitsize; | |
100 | ||
101 | chunk = 0; | |
102 | for (i = 0; i < chunk_size; i += chunk) { | |
103 | chunk = MAX(MAX_CHUNK_SIZE, chunk_size - i); | |
104 | logic.length = chunk; | |
5c3c1241 | 105 | sr_session_send(in->sdi, &packet); |
34e4813f | 106 | } |
34e4813f | 107 | |
b84cba4d BV |
108 | if (in->buf->len > chunk_size) |
109 | g_string_erase(in->buf, 0, in->buf->len - chunk_size); | |
110 | ||
111 | return SR_OK; | |
112 | } | |
113 | ||
114 | static int cleanup(struct sr_input *in) | |
115 | { | |
116 | struct sr_datafeed_packet packet; | |
117 | struct context *inc; | |
34e4813f | 118 | |
b84cba4d BV |
119 | inc = in->priv; |
120 | ||
121 | if (inc->started) { | |
122 | packet.type = SR_DF_END; | |
123 | sr_session_send(in->sdi, &packet); | |
124 | } | |
125 | g_free(in->priv); | |
126 | in->priv = NULL; | |
c506a6a6 | 127 | |
e46b8fb1 | 128 | return SR_OK; |
34e4813f BV |
129 | } |
130 | ||
b84cba4d BV |
131 | static struct sr_option options[] = { |
132 | { "numchannels", "Number of channels", "Number of channels", NULL, NULL }, | |
133 | { "samplerate", "Sample rate", "Sample rate", NULL, NULL }, | |
06ad20be | 134 | ALL_ZERO |
b84cba4d BV |
135 | }; |
136 | ||
137 | static struct sr_option *get_options(void) | |
138 | { | |
139 | if (!options[0].def) { | |
140 | options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS)); | |
10288172 | 141 | options[1].def = g_variant_ref_sink(g_variant_new_uint64(DEFAULT_SAMPLERATE)); |
b84cba4d BV |
142 | } |
143 | ||
144 | return options; | |
145 | } | |
146 | ||
d4c93774 | 147 | SR_PRIV struct sr_input_module input_binary = { |
cdb3573c | 148 | .id = "binary", |
b84cba4d | 149 | .name = "Binary", |
17bfaca6 | 150 | .desc = "Raw binary", |
b84cba4d | 151 | .options = get_options, |
d494a4aa | 152 | .init = init, |
b84cba4d BV |
153 | .receive = receive, |
154 | .cleanup = cleanup, | |
34e4813f | 155 | }; |