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161a8a27 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
161a8a27 BV |
3 | * |
4 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> | |
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> |
161a8a27 BV |
21 | #include <stdlib.h> |
22 | #include <string.h> | |
a944a84b | 23 | #include <math.h> |
161a8a27 | 24 | #include <glib.h> |
c1aae900 | 25 | #include <libsigrok/libsigrok.h> |
161a8a27 | 26 | #include "libsigrok-internal.h" |
a944a84b | 27 | |
3544f848 | 28 | #define LOG_PREFIX "output/analog" |
161a8a27 | 29 | |
8cd15dd4 UH |
30 | #define BIN_TO_DEC_DIGITS (log(2) / log(10)) |
31 | ||
161a8a27 | 32 | struct context { |
ba7dd8bb UH |
33 | int num_enabled_channels; |
34 | GPtrArray *channellist; | |
820c48f8 | 35 | int digits; |
2dbe445d | 36 | float *fdata; |
820c48f8 BV |
37 | }; |
38 | ||
39 | enum { | |
40 | DIGITS_ALL, | |
41 | DIGITS_SPEC, | |
161a8a27 BV |
42 | }; |
43 | ||
a755b0e1 | 44 | static int init(struct sr_output *o, GHashTable *options) |
161a8a27 BV |
45 | { |
46 | struct context *ctx; | |
ba7dd8bb | 47 | struct sr_channel *ch; |
161a8a27 | 48 | GSList *l; |
820c48f8 | 49 | const char *s; |
a944a84b | 50 | |
161a8a27 BV |
51 | if (!o || !o->sdi) |
52 | return SR_ERR_ARG; | |
53 | ||
91219afc | 54 | o->priv = ctx = g_malloc0(sizeof(struct context)); |
820c48f8 BV |
55 | s = g_variant_get_string(g_hash_table_lookup(options, "digits"), NULL); |
56 | if (!strcmp(s, "all")) | |
57 | ctx->digits = DIGITS_ALL; | |
58 | else | |
59 | ctx->digits = DIGITS_SPEC; | |
161a8a27 | 60 | |
ba7dd8bb UH |
61 | /* Get the number of channels and their names. */ |
62 | ctx->channellist = g_ptr_array_new(); | |
63 | for (l = o->sdi->channels; l; l = l->next) { | |
64 | ch = l->data; | |
65 | if (!ch || !ch->enabled) | |
161a8a27 | 66 | continue; |
ba7dd8bb UH |
67 | g_ptr_array_add(ctx->channellist, ch->name); |
68 | ctx->num_enabled_channels++; | |
161a8a27 | 69 | } |
2dbe445d | 70 | ctx->fdata = NULL; |
161a8a27 | 71 | |
161a8a27 BV |
72 | return SR_OK; |
73 | } | |
74 | ||
a755b0e1 | 75 | static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet, |
dba3e682 | 76 | GString **out) |
161a8a27 | 77 | { |
820c48f8 | 78 | struct context *ctx; |
edb691fc | 79 | const struct sr_datafeed_analog *analog; |
8cd15dd4 UH |
80 | const struct sr_datafeed_meta *meta; |
81 | const struct sr_config *src; | |
82 | const struct sr_key_info *srci; | |
ba7dd8bb | 83 | struct sr_channel *ch; |
69e19dd7 | 84 | GSList *l; |
e02e9e6a BV |
85 | float *fdata; |
86 | unsigned int i; | |
6ca578fe | 87 | int num_channels, c, ret, digits, actual_digits; |
a24da9a8 | 88 | char *number, *suffix; |
161a8a27 | 89 | |
17f63de6 | 90 | *out = NULL; |
161a8a27 | 91 | if (!o || !o->sdi) |
17f63de6 | 92 | return SR_ERR_ARG; |
820c48f8 | 93 | ctx = o->priv; |
161a8a27 | 94 | |
161a8a27 | 95 | switch (packet->type) { |
161a8a27 | 96 | case SR_DF_FRAME_BEGIN: |
17f63de6 | 97 | *out = g_string_new("FRAME-BEGIN\n"); |
161a8a27 BV |
98 | break; |
99 | case SR_DF_FRAME_END: | |
17f63de6 | 100 | *out = g_string_new("FRAME-END\n"); |
161a8a27 | 101 | break; |
8cd15dd4 UH |
102 | case SR_DF_META: |
103 | meta = packet->payload; | |
104 | for (l = meta->config; l; l = l->next) { | |
105 | src = l->data; | |
106 | if (!(srci = sr_key_info_get(SR_KEY_CONFIG, src->key))) | |
107 | return SR_ERR; | |
108 | *out = g_string_sized_new(512); | |
109 | g_string_append(*out, "META "); | |
110 | g_string_append_printf(*out, "%s: ", srci->id); | |
111 | if (srci->datatype == SR_T_BOOL) { | |
112 | g_string_append_printf(*out, "%u", | |
113 | g_variant_get_boolean(src->data)); | |
114 | } else if (srci->datatype == SR_T_FLOAT) { | |
115 | g_string_append_printf(*out, "%f", | |
116 | g_variant_get_double(src->data)); | |
117 | } else if (srci->datatype == SR_T_UINT64) { | |
118 | g_string_append_printf(*out, "%" | |
119 | G_GUINT64_FORMAT, | |
120 | g_variant_get_uint64(src->data)); | |
121 | } | |
122 | g_string_append(*out, "\n"); | |
123 | } | |
124 | break; | |
edb691fc UH |
125 | case SR_DF_ANALOG: |
126 | analog = packet->payload; | |
127 | num_channels = g_slist_length(analog->meaning->channels); | |
2dbe445d | 128 | if (!(fdata = g_try_realloc(ctx->fdata, |
edb691fc | 129 | analog->num_samples * num_channels * sizeof(float)))) |
e02e9e6a | 130 | return SR_ERR_MALLOC; |
2dbe445d | 131 | ctx->fdata = fdata; |
edb691fc | 132 | if ((ret = sr_analog_to_float(analog, fdata)) != SR_OK) |
e02e9e6a BV |
133 | return ret; |
134 | *out = g_string_sized_new(512); | |
8cd15dd4 UH |
135 | if (ctx->digits == DIGITS_ALL) |
136 | digits = analog->encoding->digits; | |
137 | else | |
138 | digits = analog->spec->spec_digits; | |
139 | if (!analog->encoding->is_digits_decimal) | |
140 | digits = copysign(ceil(abs(digits) * BIN_TO_DEC_DIGITS), digits); | |
5728718b | 141 | gboolean si_friendly = sr_analog_si_prefix_friendly(analog->meaning->unit); |
edb691fc UH |
142 | sr_analog_unit_to_string(analog, &suffix); |
143 | for (i = 0; i < analog->num_samples; i++) { | |
144 | for (l = analog->meaning->channels, c = 0; l; l = l->next, c++) { | |
962172e4 | 145 | float value = fdata[i * num_channels + c]; |
5728718b | 146 | const char *prefix = ""; |
6ca578fe | 147 | actual_digits = digits; |
5728718b | 148 | if (si_friendly) |
6ca578fe | 149 | prefix = sr_analog_si_prefix(&value, &actual_digits); |
e02e9e6a BV |
150 | ch = l->data; |
151 | g_string_append_printf(*out, "%s: ", ch->name); | |
6ca578fe | 152 | number = g_strdup_printf("%.*f", MAX(actual_digits, 0), value); |
820c48f8 | 153 | g_string_append(*out, number); |
a24da9a8 | 154 | g_free(number); |
820c48f8 | 155 | g_string_append(*out, " "); |
962172e4 | 156 | g_string_append(*out, prefix); |
820c48f8 BV |
157 | g_string_append(*out, suffix); |
158 | g_string_append(*out, "\n"); | |
161a8a27 BV |
159 | } |
160 | } | |
a24da9a8 | 161 | g_free(suffix); |
161a8a27 BV |
162 | break; |
163 | } | |
164 | ||
17f63de6 | 165 | return SR_OK; |
161a8a27 BV |
166 | } |
167 | ||
820c48f8 BV |
168 | static struct sr_option options[] = { |
169 | { "digits", "Digits", "Digits to show", NULL, NULL }, | |
170 | ALL_ZERO | |
171 | }; | |
172 | ||
173 | static const struct sr_option *get_options(void) | |
174 | { | |
175 | if (!options[0].def) { | |
176 | options[0].def = g_variant_ref_sink(g_variant_new_string("all")); | |
177 | options[0].values = g_slist_append(options[0].values, | |
178 | g_variant_ref_sink(g_variant_new_string("all"))); | |
179 | options[0].values = g_slist_append(options[0].values, | |
180 | g_variant_ref_sink(g_variant_new_string("spec"))); | |
181 | } | |
182 | ||
183 | return options; | |
184 | } | |
185 | ||
da3d141f SB |
186 | static int cleanup(struct sr_output *o) |
187 | { | |
188 | struct context *ctx; | |
189 | ||
190 | if (!o || !o->sdi) | |
191 | return SR_ERR_ARG; | |
192 | ctx = o->priv; | |
193 | ||
194 | g_ptr_array_free(ctx->channellist, 1); | |
195 | g_variant_unref(options[0].def); | |
196 | g_slist_free_full(options[0].values, (GDestroyNotify)g_variant_unref); | |
197 | g_free(ctx->fdata); | |
198 | g_free(ctx); | |
199 | o->priv = NULL; | |
200 | ||
201 | return SR_OK; | |
202 | } | |
203 | ||
a755b0e1 | 204 | SR_PRIV struct sr_output_module output_analog = { |
161a8a27 | 205 | .id = "analog", |
a755b0e1 | 206 | .name = "Analog", |
8cd15dd4 | 207 | .desc = "ASCII analog data values and units", |
8a174d23 | 208 | .exts = NULL, |
3cd4b381 | 209 | .flags = 0, |
820c48f8 | 210 | .options = get_options, |
161a8a27 | 211 | .init = init, |
17f63de6 | 212 | .receive = receive, |
161a8a27 BV |
213 | .cleanup = cleanup |
214 | }; |