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1 | /* | |
2 | * This file is part of the libsigrok project. | |
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 | ||
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
22 | #include <math.h> | |
23 | #include <glib.h> | |
24 | #include "libsigrok.h" | |
25 | #include "libsigrok-internal.h" | |
26 | ||
27 | #define LOG_PREFIX "output/analog" | |
28 | ||
29 | struct context { | |
30 | int num_enabled_channels; | |
31 | GPtrArray *channellist; | |
32 | int digits; | |
33 | }; | |
34 | ||
35 | enum { | |
36 | DIGITS_ALL, | |
37 | DIGITS_SPEC, | |
38 | }; | |
39 | ||
40 | static int init(struct sr_output *o, GHashTable *options) | |
41 | { | |
42 | struct context *ctx; | |
43 | struct sr_channel *ch; | |
44 | GSList *l; | |
45 | const char *s; | |
46 | ||
47 | if (!o || !o->sdi) | |
48 | return SR_ERR_ARG; | |
49 | ||
50 | o->priv = ctx = g_malloc0(sizeof(struct context)); | |
51 | s = g_variant_get_string(g_hash_table_lookup(options, "digits"), NULL); | |
52 | if (!strcmp(s, "all")) | |
53 | ctx->digits = DIGITS_ALL; | |
54 | else | |
55 | ctx->digits = DIGITS_SPEC; | |
56 | ||
57 | /* Get the number of channels and their names. */ | |
58 | ctx->channellist = g_ptr_array_new(); | |
59 | for (l = o->sdi->channels; l; l = l->next) { | |
60 | ch = l->data; | |
61 | if (!ch || !ch->enabled) | |
62 | continue; | |
63 | g_ptr_array_add(ctx->channellist, ch->name); | |
64 | ctx->num_enabled_channels++; | |
65 | } | |
66 | ||
67 | return SR_OK; | |
68 | } | |
69 | ||
70 | static void si_printf(float value, GString *out, char *unitstr) | |
71 | { | |
72 | float v; | |
73 | ||
74 | if (signbit(value)) | |
75 | v = -(value); | |
76 | else | |
77 | v = value; | |
78 | ||
79 | if (v < 1e-12 || v > 1e+12) | |
80 | g_string_append_printf(out, "%f %s", value, unitstr); | |
81 | else if (v > 1e+9) | |
82 | g_string_append_printf(out, "%f G%s", value / 1e+9, unitstr); | |
83 | else if (v > 1e+6) | |
84 | g_string_append_printf(out, "%f M%s", value / 1e+6, unitstr); | |
85 | else if (v > 1e+3) | |
86 | g_string_append_printf(out, "%f k%s", value / 1e+3, unitstr); | |
87 | else if (v < 1e-9) | |
88 | g_string_append_printf(out, "%f n%s", value * 1e+9, unitstr); | |
89 | else if (v < 1e-6) | |
90 | g_string_append_printf(out, "%f u%s", value * 1e+6, unitstr); | |
91 | else if (v < 1e-3) | |
92 | g_string_append_printf(out, "%f m%s", value * 1e+3, unitstr); | |
93 | else | |
94 | g_string_append_printf(out, "%f %s", value, unitstr); | |
95 | ||
96 | } | |
97 | ||
98 | static void fancyprint(int unit, int mqflags, float value, GString *out) | |
99 | { | |
100 | switch (unit) { | |
101 | case SR_UNIT_VOLT: | |
102 | si_printf(value, out, "V"); | |
103 | break; | |
104 | case SR_UNIT_AMPERE: | |
105 | si_printf(value, out, "A"); | |
106 | break; | |
107 | case SR_UNIT_OHM: | |
108 | si_printf(value, out, ""); | |
109 | g_string_append_unichar(out, 0x2126); | |
110 | break; | |
111 | case SR_UNIT_FARAD: | |
112 | si_printf(value, out, "F"); | |
113 | break; | |
114 | case SR_UNIT_HENRY: | |
115 | si_printf(value, out, "H"); | |
116 | break; | |
117 | case SR_UNIT_KELVIN: | |
118 | si_printf(value, out, "K"); | |
119 | break; | |
120 | case SR_UNIT_CELSIUS: | |
121 | si_printf(value, out, ""); | |
122 | g_string_append_unichar(out, 0x00b0); | |
123 | g_string_append_c(out, 'C'); | |
124 | break; | |
125 | case SR_UNIT_FAHRENHEIT: | |
126 | si_printf(value, out, ""); | |
127 | g_string_append_unichar(out, 0x00b0); | |
128 | g_string_append_c(out, 'F'); | |
129 | break; | |
130 | case SR_UNIT_HERTZ: | |
131 | si_printf(value, out, "Hz"); | |
132 | break; | |
133 | case SR_UNIT_PERCENTAGE: | |
134 | g_string_append_printf(out, "%f %%", value); | |
135 | break; | |
136 | case SR_UNIT_BOOLEAN: | |
137 | if (value > 0) | |
138 | g_string_append_printf(out, "TRUE"); | |
139 | else | |
140 | g_string_append_printf(out, "FALSE"); | |
141 | break; | |
142 | case SR_UNIT_SECOND: | |
143 | si_printf(value, out, "s"); | |
144 | break; | |
145 | case SR_UNIT_SIEMENS: | |
146 | si_printf(value, out, "S"); | |
147 | break; | |
148 | case SR_UNIT_DECIBEL_MW: | |
149 | si_printf(value, out, "dBu"); | |
150 | break; | |
151 | case SR_UNIT_DECIBEL_VOLT: | |
152 | si_printf(value, out, "dBV"); | |
153 | break; | |
154 | case SR_UNIT_DECIBEL_SPL: | |
155 | if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A) | |
156 | si_printf(value, out, "dB(A)"); | |
157 | else if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_C) | |
158 | si_printf(value, out, "dB(C)"); | |
159 | else if (mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_Z) | |
160 | si_printf(value, out, "dB(Z)"); | |
161 | else | |
162 | /* No frequency weighting, or non-standard "flat" */ | |
163 | si_printf(value, out, "dB(SPL)"); | |
164 | if (mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_S) | |
165 | g_string_append(out, " S"); | |
166 | else if (mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F) | |
167 | g_string_append(out, " F"); | |
168 | if (mqflags & SR_MQFLAG_SPL_LAT) | |
169 | g_string_append(out, " LAT"); | |
170 | else if (mqflags & SR_MQFLAG_SPL_PCT_OVER_ALARM) | |
171 | /* Not a standard function for SLMs, so this is | |
172 | * a made-up notation. */ | |
173 | g_string_append(out, " %oA"); | |
174 | break; | |
175 | case SR_UNIT_CONCENTRATION: | |
176 | g_string_append_printf(out, "%f ppm", value * 1000000); | |
177 | break; | |
178 | case SR_UNIT_REVOLUTIONS_PER_MINUTE: | |
179 | si_printf(value, out, "RPM"); | |
180 | break; | |
181 | case SR_UNIT_VOLT_AMPERE: | |
182 | si_printf(value, out, "VA"); | |
183 | break; | |
184 | case SR_UNIT_WATT: | |
185 | si_printf(value, out, "W"); | |
186 | break; | |
187 | case SR_UNIT_WATT_HOUR: | |
188 | si_printf(value, out, "Wh"); | |
189 | break; | |
190 | case SR_UNIT_METER_SECOND: | |
191 | si_printf(value, out, "m/s"); | |
192 | break; | |
193 | case SR_UNIT_HECTOPASCAL: | |
194 | si_printf(value, out, "hPa"); | |
195 | break; | |
196 | case SR_UNIT_HUMIDITY_293K: | |
197 | si_printf(value, out, "%rF"); | |
198 | break; | |
199 | case SR_UNIT_DEGREE: | |
200 | si_printf(value, out, ""); | |
201 | g_string_append_unichar(out, 0x00b0); | |
202 | break; | |
203 | default: | |
204 | si_printf(value, out, ""); | |
205 | break; | |
206 | } | |
207 | ||
208 | if (mqflags & SR_MQFLAG_AC) | |
209 | g_string_append_printf(out, " AC"); | |
210 | if (mqflags & SR_MQFLAG_DC) | |
211 | g_string_append_printf(out, " DC"); | |
212 | if (mqflags & SR_MQFLAG_RMS) | |
213 | g_string_append_printf(out, " RMS"); | |
214 | if (mqflags & SR_MQFLAG_DIODE) | |
215 | g_string_append_printf(out, " DIODE"); | |
216 | if (mqflags & SR_MQFLAG_HOLD) | |
217 | g_string_append_printf(out, " HOLD"); | |
218 | if (mqflags & SR_MQFLAG_MAX) | |
219 | g_string_append_printf(out, " MAX"); | |
220 | if (mqflags & SR_MQFLAG_MIN) | |
221 | g_string_append_printf(out, " MIN"); | |
222 | if (mqflags & SR_MQFLAG_AUTORANGE) | |
223 | g_string_append_printf(out, " AUTO"); | |
224 | if (mqflags & SR_MQFLAG_RELATIVE) | |
225 | g_string_append_printf(out, " REL"); | |
226 | if (mqflags & SR_MQFLAG_AVG) | |
227 | g_string_append_printf(out, " AVG"); | |
228 | if (mqflags & SR_MQFLAG_REFERENCE) | |
229 | g_string_append_printf(out, " REF"); | |
230 | g_string_append_c(out, '\n'); | |
231 | } | |
232 | ||
233 | static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet, | |
234 | GString **out) | |
235 | { | |
236 | struct context *ctx; | |
237 | const struct sr_datafeed_analog *analog; | |
238 | const struct sr_datafeed_analog2 *analog2; | |
239 | struct sr_channel *ch; | |
240 | GSList *l; | |
241 | float *fdata; | |
242 | unsigned int i; | |
243 | int num_channels, c, ret, si, digits; | |
244 | char *number, *suffix; | |
245 | ||
246 | *out = NULL; | |
247 | if (!o || !o->sdi) | |
248 | return SR_ERR_ARG; | |
249 | ctx = o->priv; | |
250 | ||
251 | switch (packet->type) { | |
252 | case SR_DF_FRAME_BEGIN: | |
253 | *out = g_string_new("FRAME-BEGIN\n"); | |
254 | break; | |
255 | case SR_DF_FRAME_END: | |
256 | *out = g_string_new("FRAME-END\n"); | |
257 | break; | |
258 | case SR_DF_ANALOG: | |
259 | analog = packet->payload; | |
260 | fdata = (float *)analog->data; | |
261 | *out = g_string_sized_new(512); | |
262 | num_channels = g_slist_length(analog->channels); | |
263 | for (si = 0; si < analog->num_samples; si++) { | |
264 | for (l = analog->channels, c = 0; l; l = l->next, c++) { | |
265 | ch = l->data; | |
266 | g_string_append_printf(*out, "%s: ", ch->name); | |
267 | fancyprint(analog->unit, analog->mqflags, | |
268 | fdata[si * num_channels + c], *out); | |
269 | } | |
270 | } | |
271 | break; | |
272 | case SR_DF_ANALOG2: | |
273 | analog2 = packet->payload; | |
274 | if (!(fdata = g_try_malloc(analog2->num_samples * sizeof(float)))) | |
275 | return SR_ERR_MALLOC; | |
276 | if ((ret = sr_analog_to_float(analog2, fdata)) != SR_OK) | |
277 | return ret; | |
278 | *out = g_string_sized_new(512); | |
279 | if (analog2->encoding->is_digits_decimal) { | |
280 | if (ctx->digits == DIGITS_ALL) | |
281 | digits = analog2->encoding->digits; | |
282 | else | |
283 | digits = analog2->spec->spec_digits; | |
284 | } else { | |
285 | /* TODO we don't know how to print by number of bits yet. */ | |
286 | digits = 6; | |
287 | } | |
288 | sr_analog_unit_to_string(analog2, &suffix); | |
289 | num_channels = g_slist_length(analog2->meaning->channels); | |
290 | for (i = 0; i < analog2->num_samples; i++) { | |
291 | for (l = analog2->meaning->channels, c = 0; l; l = l->next, c++) { | |
292 | ch = l->data; | |
293 | g_string_append_printf(*out, "%s: ", ch->name); | |
294 | sr_analog_float_to_string(fdata[i * num_channels + c], | |
295 | digits, &number); | |
296 | g_string_append(*out, number); | |
297 | g_free(number); | |
298 | g_string_append(*out, " "); | |
299 | g_string_append(*out, suffix); | |
300 | g_string_append(*out, "\n"); | |
301 | } | |
302 | } | |
303 | g_free(suffix); | |
304 | break; | |
305 | } | |
306 | ||
307 | return SR_OK; | |
308 | } | |
309 | ||
310 | static int cleanup(struct sr_output *o) | |
311 | { | |
312 | struct context *ctx; | |
313 | ||
314 | if (!o || !o->sdi) | |
315 | return SR_ERR_ARG; | |
316 | ctx = o->priv; | |
317 | ||
318 | g_ptr_array_free(ctx->channellist, 1); | |
319 | g_free(ctx); | |
320 | o->priv = NULL; | |
321 | ||
322 | return SR_OK; | |
323 | } | |
324 | ||
325 | static struct sr_option options[] = { | |
326 | { "digits", "Digits", "Digits to show", NULL, NULL }, | |
327 | ALL_ZERO | |
328 | }; | |
329 | ||
330 | static const struct sr_option *get_options(void) | |
331 | { | |
332 | if (!options[0].def) { | |
333 | options[0].def = g_variant_ref_sink(g_variant_new_string("all")); | |
334 | options[0].values = g_slist_append(options[0].values, | |
335 | g_variant_ref_sink(g_variant_new_string("all"))); | |
336 | options[0].values = g_slist_append(options[0].values, | |
337 | g_variant_ref_sink(g_variant_new_string("spec"))); | |
338 | } | |
339 | ||
340 | return options; | |
341 | } | |
342 | ||
343 | SR_PRIV struct sr_output_module output_analog = { | |
344 | .id = "analog", | |
345 | .name = "Analog", | |
346 | .desc = "Analog data and types", | |
347 | .exts = NULL, | |
348 | .options = get_options, | |
349 | .init = init, | |
350 | .receive = receive, | |
351 | .cleanup = cleanup | |
352 | }; |