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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 BV |
29 | |
30 | struct context { | |
ba7dd8bb UH |
31 | int num_enabled_channels; |
32 | GPtrArray *channellist; | |
820c48f8 | 33 | int digits; |
2dbe445d | 34 | float *fdata; |
820c48f8 BV |
35 | }; |
36 | ||
37 | enum { | |
38 | DIGITS_ALL, | |
39 | DIGITS_SPEC, | |
161a8a27 BV |
40 | }; |
41 | ||
a755b0e1 | 42 | static int init(struct sr_output *o, GHashTable *options) |
161a8a27 BV |
43 | { |
44 | struct context *ctx; | |
ba7dd8bb | 45 | struct sr_channel *ch; |
161a8a27 | 46 | GSList *l; |
820c48f8 | 47 | const char *s; |
a944a84b | 48 | |
161a8a27 BV |
49 | if (!o || !o->sdi) |
50 | return SR_ERR_ARG; | |
51 | ||
91219afc | 52 | o->priv = ctx = g_malloc0(sizeof(struct context)); |
820c48f8 BV |
53 | s = g_variant_get_string(g_hash_table_lookup(options, "digits"), NULL); |
54 | if (!strcmp(s, "all")) | |
55 | ctx->digits = DIGITS_ALL; | |
56 | else | |
57 | ctx->digits = DIGITS_SPEC; | |
161a8a27 | 58 | |
ba7dd8bb UH |
59 | /* Get the number of channels and their names. */ |
60 | ctx->channellist = g_ptr_array_new(); | |
61 | for (l = o->sdi->channels; l; l = l->next) { | |
62 | ch = l->data; | |
63 | if (!ch || !ch->enabled) | |
161a8a27 | 64 | continue; |
ba7dd8bb UH |
65 | g_ptr_array_add(ctx->channellist, ch->name); |
66 | ctx->num_enabled_channels++; | |
161a8a27 | 67 | } |
2dbe445d | 68 | ctx->fdata = NULL; |
161a8a27 | 69 | |
161a8a27 BV |
70 | return SR_OK; |
71 | } | |
72 | ||
a755b0e1 | 73 | static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet, |
dba3e682 | 74 | GString **out) |
161a8a27 | 75 | { |
820c48f8 | 76 | struct context *ctx; |
edb691fc | 77 | const struct sr_datafeed_analog *analog; |
688e44ae FS |
78 | const struct sr_datafeed_meta *meta; |
79 | const struct sr_config *src; | |
80 | const struct sr_key_info *srci; | |
ba7dd8bb | 81 | struct sr_channel *ch; |
69e19dd7 | 82 | GSList *l; |
e02e9e6a BV |
83 | float *fdata; |
84 | unsigned int i; | |
6ca578fe | 85 | int num_channels, c, ret, digits, actual_digits; |
a24da9a8 | 86 | char *number, *suffix; |
161a8a27 | 87 | |
17f63de6 | 88 | *out = NULL; |
161a8a27 | 89 | if (!o || !o->sdi) |
17f63de6 | 90 | return SR_ERR_ARG; |
820c48f8 | 91 | ctx = o->priv; |
161a8a27 | 92 | |
161a8a27 | 93 | switch (packet->type) { |
161a8a27 | 94 | case SR_DF_FRAME_BEGIN: |
17f63de6 | 95 | *out = g_string_new("FRAME-BEGIN\n"); |
161a8a27 BV |
96 | break; |
97 | case SR_DF_FRAME_END: | |
17f63de6 | 98 | *out = g_string_new("FRAME-END\n"); |
161a8a27 | 99 | break; |
688e44ae FS |
100 | case SR_DF_META: |
101 | meta = packet->payload; | |
102 | for (l = meta->config; l; l = l->next) { | |
103 | src = l->data; | |
104 | if (!(srci = sr_key_info_get(SR_KEY_CONFIG, src->key))) | |
105 | return SR_ERR; | |
106 | *out = g_string_sized_new(512); | |
107 | g_string_append(*out, "META "); | |
108 | g_string_append_printf(*out, "%s: ", srci->id); | |
109 | if (srci->datatype == SR_T_BOOL) { | |
110 | g_string_append_printf(*out, "%u", | |
111 | g_variant_get_boolean(src->data)); | |
112 | } else if (srci->datatype == SR_T_FLOAT) { | |
113 | g_string_append_printf(*out, "%f", | |
114 | g_variant_get_double(src->data)); | |
115 | } else if (srci->datatype == SR_T_UINT64) { | |
374b0a94 UH |
116 | g_string_append_printf(*out, "%" |
117 | G_GUINT64_FORMAT, | |
688e44ae FS |
118 | g_variant_get_uint64(src->data)); |
119 | } | |
120 | g_string_append(*out, "\n"); | |
121 | } | |
122 | break; | |
edb691fc UH |
123 | case SR_DF_ANALOG: |
124 | analog = packet->payload; | |
125 | num_channels = g_slist_length(analog->meaning->channels); | |
2dbe445d | 126 | if (!(fdata = g_try_realloc(ctx->fdata, |
edb691fc | 127 | analog->num_samples * num_channels * sizeof(float)))) |
e02e9e6a | 128 | return SR_ERR_MALLOC; |
2dbe445d | 129 | ctx->fdata = fdata; |
edb691fc | 130 | if ((ret = sr_analog_to_float(analog, fdata)) != SR_OK) |
e02e9e6a BV |
131 | return ret; |
132 | *out = g_string_sized_new(512); | |
edb691fc | 133 | if (analog->encoding->is_digits_decimal) { |
820c48f8 | 134 | if (ctx->digits == DIGITS_ALL) |
edb691fc | 135 | digits = analog->encoding->digits; |
820c48f8 | 136 | else |
edb691fc | 137 | digits = analog->spec->spec_digits; |
820c48f8 BV |
138 | } else { |
139 | /* TODO we don't know how to print by number of bits yet. */ | |
140 | digits = 6; | |
141 | } | |
5728718b | 142 | gboolean si_friendly = sr_analog_si_prefix_friendly(analog->meaning->unit); |
edb691fc UH |
143 | sr_analog_unit_to_string(analog, &suffix); |
144 | for (i = 0; i < analog->num_samples; i++) { | |
145 | for (l = analog->meaning->channels, c = 0; l; l = l->next, c++) { | |
962172e4 | 146 | float value = fdata[i * num_channels + c]; |
5728718b | 147 | const char *prefix = ""; |
6ca578fe | 148 | actual_digits = digits; |
5728718b | 149 | if (si_friendly) |
6ca578fe | 150 | prefix = sr_analog_si_prefix(&value, &actual_digits); |
e02e9e6a BV |
151 | ch = l->data; |
152 | g_string_append_printf(*out, "%s: ", ch->name); | |
6ca578fe | 153 | number = g_strdup_printf("%.*f", MAX(actual_digits, 0), value); |
820c48f8 | 154 | g_string_append(*out, number); |
a24da9a8 | 155 | g_free(number); |
820c48f8 | 156 | g_string_append(*out, " "); |
962172e4 | 157 | g_string_append(*out, prefix); |
820c48f8 BV |
158 | g_string_append(*out, suffix); |
159 | g_string_append(*out, "\n"); | |
161a8a27 BV |
160 | } |
161 | } | |
a24da9a8 | 162 | g_free(suffix); |
161a8a27 BV |
163 | break; |
164 | } | |
165 | ||
17f63de6 | 166 | return SR_OK; |
161a8a27 BV |
167 | } |
168 | ||
820c48f8 BV |
169 | static struct sr_option options[] = { |
170 | { "digits", "Digits", "Digits to show", NULL, NULL }, | |
171 | ALL_ZERO | |
172 | }; | |
173 | ||
174 | static const struct sr_option *get_options(void) | |
175 | { | |
176 | if (!options[0].def) { | |
177 | options[0].def = g_variant_ref_sink(g_variant_new_string("all")); | |
178 | options[0].values = g_slist_append(options[0].values, | |
179 | g_variant_ref_sink(g_variant_new_string("all"))); | |
180 | options[0].values = g_slist_append(options[0].values, | |
181 | g_variant_ref_sink(g_variant_new_string("spec"))); | |
182 | } | |
183 | ||
184 | return options; | |
185 | } | |
186 | ||
da3d141f SB |
187 | static int cleanup(struct sr_output *o) |
188 | { | |
189 | struct context *ctx; | |
190 | ||
191 | if (!o || !o->sdi) | |
192 | return SR_ERR_ARG; | |
193 | ctx = o->priv; | |
194 | ||
195 | g_ptr_array_free(ctx->channellist, 1); | |
196 | g_variant_unref(options[0].def); | |
197 | g_slist_free_full(options[0].values, (GDestroyNotify)g_variant_unref); | |
198 | g_free(ctx->fdata); | |
199 | g_free(ctx); | |
200 | o->priv = NULL; | |
201 | ||
202 | return SR_OK; | |
203 | } | |
204 | ||
a755b0e1 | 205 | SR_PRIV struct sr_output_module output_analog = { |
161a8a27 | 206 | .id = "analog", |
a755b0e1 BV |
207 | .name = "Analog", |
208 | .desc = "Analog data and types", | |
8a174d23 | 209 | .exts = NULL, |
3cd4b381 | 210 | .flags = 0, |
820c48f8 | 211 | .options = get_options, |
161a8a27 | 212 | .init = init, |
17f63de6 | 213 | .receive = receive, |
161a8a27 BV |
214 | .cleanup = cleanup |
215 | }; |