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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 | ||
6ec6c43b | 20 | #include <config.h> |
13a12913 | 21 | #include <stdlib.h> |
34e4813f BV |
22 | #include <sys/types.h> |
23 | #include <sys/stat.h> | |
24 | #include <fcntl.h> | |
25 | #include <unistd.h> | |
26 | #include <sys/time.h> | |
c1aae900 | 27 | #include <libsigrok/libsigrok.h> |
45c59c8b | 28 | #include "libsigrok-internal.h" |
34e4813f | 29 | |
3544f848 | 30 | #define LOG_PREFIX "input/binary" |
8e7f1cfd | 31 | |
8bc2fa6d | 32 | #define CHUNK_SIZE (4 * 1024 * 1024) |
d9251a2c UH |
33 | #define DEFAULT_NUM_CHANNELS 8 |
34 | #define DEFAULT_SAMPLERATE 0 | |
13a12913 | 35 | |
c506a6a6 | 36 | struct context { |
b84cba4d | 37 | gboolean started; |
0d1297a2 | 38 | uint64_t samplerate; |
408b6ab4 | 39 | uint16_t unitsize; |
c506a6a6 TŠ |
40 | }; |
41 | ||
b84cba4d | 42 | static int init(struct sr_input *in, GHashTable *options) |
13a12913 | 43 | { |
b84cba4d | 44 | struct context *inc; |
ba7dd8bb | 45 | int num_channels, i; |
b84cba4d | 46 | char name[16]; |
543d45c5 | 47 | |
b84cba4d BV |
48 | num_channels = g_variant_get_int32(g_hash_table_lookup(options, "numchannels")); |
49 | if (num_channels < 1) { | |
50 | sr_err("Invalid value for numchannels: must be at least 1."); | |
51 | return SR_ERR_ARG; | |
c506a6a6 | 52 | } |
13a12913 | 53 | |
aac29cc1 | 54 | in->sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
b84cba4d | 55 | in->priv = inc = g_malloc0(sizeof(struct context)); |
10288172 BV |
56 | |
57 | inc->samplerate = g_variant_get_uint64(g_hash_table_lookup(options, "samplerate")); | |
464d12c7 | 58 | |
ba7dd8bb | 59 | for (i = 0; i < num_channels; i++) { |
00ed77f2 | 60 | snprintf(name, sizeof(name), "%d", i); |
5e23fcab | 61 | sr_channel_new(in->sdi, i, SR_CHANNEL_LOGIC, TRUE, name); |
464d12c7 | 62 | } |
13a12913 | 63 | |
408b6ab4 UH |
64 | inc->unitsize = (g_slist_length(in->sdi->channels) + 7) / 8; |
65 | ||
e46b8fb1 | 66 | return SR_OK; |
13a12913 BV |
67 | } |
68 | ||
7066fd46 | 69 | static int process_buffer(struct sr_input *in) |
34e4813f | 70 | { |
b9c735a2 | 71 | struct sr_datafeed_packet packet; |
9c939c51 | 72 | struct sr_datafeed_logic logic; |
b84cba4d BV |
73 | struct context *inc; |
74 | gsize chunk_size, i; | |
7066fd46 | 75 | int chunk; |
c506a6a6 | 76 | |
b84cba4d | 77 | inc = in->priv; |
88189019 | 78 | if (!inc->started) { |
bee2b016 | 79 | std_session_send_df_header(in->sdi); |
88189019 | 80 | |
d0181813 | 81 | if (inc->samplerate) { |
f8a8d4bb GS |
82 | (void)sr_session_send_meta(in->sdi, SR_CONF_SAMPLERATE, |
83 | g_variant_new_uint64(inc->samplerate)); | |
d0181813 BV |
84 | } |
85 | ||
86 | inc->started = TRUE; | |
88189019 | 87 | } |
f366e86c | 88 | |
5a2326a7 | 89 | packet.type = SR_DF_LOGIC; |
9c939c51 | 90 | packet.payload = &logic; |
408b6ab4 | 91 | logic.unitsize = inc->unitsize; |
b84cba4d BV |
92 | |
93 | /* Cut off at multiple of unitsize. */ | |
94 | chunk_size = in->buf->len / logic.unitsize * logic.unitsize; | |
95 | ||
b84cba4d | 96 | for (i = 0; i < chunk_size; i += chunk) { |
88189019 | 97 | logic.data = in->buf->str + i; |
8bc2fa6d | 98 | chunk = MIN(CHUNK_SIZE, chunk_size - i); |
cb0fedd9 GS |
99 | chunk /= logic.unitsize; |
100 | chunk *= logic.unitsize; | |
b84cba4d | 101 | logic.length = chunk; |
5c3c1241 | 102 | sr_session_send(in->sdi, &packet); |
34e4813f | 103 | } |
88189019 | 104 | g_string_erase(in->buf, 0, chunk_size); |
b84cba4d BV |
105 | |
106 | return SR_OK; | |
107 | } | |
108 | ||
7066fd46 BV |
109 | static int receive(struct sr_input *in, GString *buf) |
110 | { | |
111 | int ret; | |
112 | ||
113 | g_string_append_len(in->buf, buf->str, buf->len); | |
114 | ||
115 | if (!in->sdi_ready) { | |
116 | /* sdi is ready, notify frontend. */ | |
117 | in->sdi_ready = TRUE; | |
118 | return SR_OK; | |
119 | } | |
120 | ||
121 | ret = process_buffer(in); | |
122 | ||
123 | return ret; | |
124 | } | |
125 | ||
126 | static int end(struct sr_input *in) | |
b84cba4d | 127 | { |
b84cba4d | 128 | struct context *inc; |
7066fd46 | 129 | int ret; |
34e4813f | 130 | |
7066fd46 BV |
131 | if (in->sdi_ready) |
132 | ret = process_buffer(in); | |
133 | else | |
134 | ret = SR_OK; | |
b84cba4d | 135 | |
7066fd46 | 136 | inc = in->priv; |
3be42bc2 | 137 | if (inc->started) |
bee2b016 | 138 | std_session_send_df_end(in->sdi); |
c506a6a6 | 139 | |
7066fd46 | 140 | return ret; |
34e4813f BV |
141 | } |
142 | ||
3781b65d SA |
143 | static int reset(struct sr_input *in) |
144 | { | |
145 | struct context *inc = in->priv; | |
146 | ||
147 | inc->started = FALSE; | |
148 | g_string_truncate(in->buf, 0); | |
149 | ||
150 | return SR_OK; | |
151 | } | |
152 | ||
b84cba4d | 153 | static struct sr_option options[] = { |
867293a1 UH |
154 | { "numchannels", "Number of logic channels", "The number of (logic) channels in the data", NULL, NULL }, |
155 | { "samplerate", "Sample rate (Hz)", "The sample rate of the (logic) data in Hz", NULL, NULL }, | |
06ad20be | 156 | ALL_ZERO |
b84cba4d BV |
157 | }; |
158 | ||
2c240774 | 159 | static const struct sr_option *get_options(void) |
b84cba4d BV |
160 | { |
161 | if (!options[0].def) { | |
162 | options[0].def = g_variant_ref_sink(g_variant_new_int32(DEFAULT_NUM_CHANNELS)); | |
10288172 | 163 | options[1].def = g_variant_ref_sink(g_variant_new_uint64(DEFAULT_SAMPLERATE)); |
b84cba4d BV |
164 | } |
165 | ||
166 | return options; | |
167 | } | |
168 | ||
d4c93774 | 169 | SR_PRIV struct sr_input_module input_binary = { |
cdb3573c | 170 | .id = "binary", |
b84cba4d | 171 | .name = "Binary", |
b20eb520 | 172 | .desc = "Raw binary logic data", |
c7bc82ff | 173 | .exts = NULL, |
b84cba4d | 174 | .options = get_options, |
d494a4aa | 175 | .init = init, |
b84cba4d | 176 | .receive = receive, |
7066fd46 | 177 | .end = end, |
3781b65d | 178 | .reset = reset, |
34e4813f | 179 | }; |