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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de> | |
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 2 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <glib.h> | |
24 | #include "config.h" | |
25 | #include "libsigrok.h" | |
26 | #include "libsigrok-internal.h" | |
27 | ||
28 | struct context { | |
29 | unsigned int num_enabled_probes; | |
30 | unsigned int unitsize; | |
31 | char *probelist[SR_MAX_NUM_PROBES + 1]; | |
32 | char *header; | |
33 | }; | |
34 | ||
35 | #define MAX_HEADER_LEN \ | |
36 | (1024 + (SR_MAX_NUM_PROBES * (SR_MAX_PROBENAME_LEN + 10))) | |
37 | ||
38 | static const char *gnuplot_header = "\ | |
39 | # Sample data in space-separated columns format usable by gnuplot\n\ | |
40 | #\n\ | |
41 | # Generated by: %s on %s%s\ | |
42 | # Period: %s\n\ | |
43 | #\n\ | |
44 | # Column\tProbe\n\ | |
45 | # -------------------------------------\ | |
46 | ----------------------------------------\n\ | |
47 | # 0\t\tSample counter (for internal gnuplot purposes)\n%s\n"; | |
48 | ||
49 | static const char *gnuplot_header_comment = "\ | |
50 | # Comment: Acquisition with %d/%d probes at %s\n"; | |
51 | ||
52 | static int init(struct sr_output *o) | |
53 | { | |
54 | struct context *ctx; | |
55 | struct sr_probe *probe; | |
56 | GSList *l; | |
57 | uint64_t *samplerate; | |
58 | unsigned int i; | |
59 | int b, num_probes; | |
60 | char *c, *frequency_s; | |
61 | char wbuf[1000], comment[128]; | |
62 | time_t t; | |
63 | ||
64 | if (!o) { | |
65 | sr_err("gnuplot out: %s: o was NULL", __func__); | |
66 | return SR_ERR_ARG; | |
67 | } | |
68 | ||
69 | if (!o->sdi) { | |
70 | sr_err("gnuplot out: %s: o->sdi was NULL", __func__); | |
71 | return SR_ERR_ARG; | |
72 | } | |
73 | ||
74 | if (!o->sdi->driver) { | |
75 | sr_err("gnuplot out: %s: o->sdi->driver was NULL", __func__); | |
76 | return SR_ERR_ARG; | |
77 | } | |
78 | ||
79 | if (!(ctx = g_try_malloc0(sizeof(struct context)))) { | |
80 | sr_err("gnuplot out: %s: ctx malloc failed", __func__); | |
81 | return SR_ERR_MALLOC; | |
82 | } | |
83 | ||
84 | if (!(ctx->header = g_try_malloc0(MAX_HEADER_LEN + 1))) { | |
85 | sr_err("gnuplot out: %s: ctx->header malloc failed", __func__); | |
86 | g_free(ctx); | |
87 | return SR_ERR_MALLOC; | |
88 | } | |
89 | ||
90 | o->internal = ctx; | |
91 | ctx->num_enabled_probes = 0; | |
92 | for (l = o->sdi->probes; l; l = l->next) { | |
93 | probe = l->data; /* TODO: Error checks. */ | |
94 | if (!probe->enabled) | |
95 | continue; | |
96 | ctx->probelist[ctx->num_enabled_probes++] = probe->name; | |
97 | } | |
98 | ctx->probelist[ctx->num_enabled_probes] = 0; | |
99 | ctx->unitsize = (ctx->num_enabled_probes + 7) / 8; | |
100 | ||
101 | num_probes = g_slist_length(o->sdi->probes); | |
102 | comment[0] = '\0'; | |
103 | if (sr_dev_has_hwcap(o->sdi, SR_HWCAP_SAMPLERATE)) { | |
104 | o->sdi->driver->info_get(SR_DI_CUR_SAMPLERATE, | |
105 | (const void **)&samplerate, o->sdi); | |
106 | if (!(frequency_s = sr_samplerate_string(*samplerate))) { | |
107 | sr_err("gnuplot out: %s: sr_samplerate_string failed", | |
108 | __func__); | |
109 | g_free(ctx->header); | |
110 | g_free(ctx); | |
111 | return SR_ERR; | |
112 | } | |
113 | snprintf(comment, 127, gnuplot_header_comment, | |
114 | ctx->num_enabled_probes, num_probes, frequency_s); | |
115 | g_free(frequency_s); | |
116 | } | |
117 | ||
118 | /* Columns / channels */ | |
119 | wbuf[0] = '\0'; | |
120 | for (i = 0; i < ctx->num_enabled_probes; i++) { | |
121 | c = (char *)&wbuf + strlen((const char *)&wbuf); | |
122 | sprintf(c, "# %d\t\t%s\n", i + 1, ctx->probelist[i]); | |
123 | } | |
124 | ||
125 | if (!(frequency_s = sr_period_string(*samplerate))) { | |
126 | sr_err("gnuplot out: %s: sr_period_string failed", __func__); | |
127 | g_free(ctx->header); | |
128 | g_free(ctx); | |
129 | return SR_ERR; | |
130 | } | |
131 | ||
132 | t = time(NULL); | |
133 | b = snprintf(ctx->header, MAX_HEADER_LEN, gnuplot_header, | |
134 | PACKAGE_STRING, ctime(&t), comment, frequency_s, | |
135 | (char *)&wbuf); | |
136 | g_free(frequency_s); | |
137 | ||
138 | if (b < 0) { | |
139 | sr_err("gnuplot out: %s: sprintf failed", __func__); | |
140 | g_free(ctx->header); | |
141 | g_free(ctx); | |
142 | return SR_ERR; | |
143 | } | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
148 | static int event(struct sr_output *o, int event_type, uint8_t **data_out, | |
149 | uint64_t *length_out) | |
150 | { | |
151 | if (!o) { | |
152 | sr_err("gnuplot out: %s: o was NULL", __func__); | |
153 | return SR_ERR_ARG; | |
154 | } | |
155 | ||
156 | if (!data_out) { | |
157 | sr_err("gnuplot out: %s: data_out was NULL", __func__); | |
158 | return SR_ERR_ARG; | |
159 | } | |
160 | ||
161 | if (!length_out) { | |
162 | sr_err("gnuplot out: %s: length_out was NULL", __func__); | |
163 | return SR_ERR_ARG; | |
164 | } | |
165 | ||
166 | switch (event_type) { | |
167 | case SR_DF_TRIGGER: | |
168 | /* TODO: Can a trigger mark be in a gnuplot data file? */ | |
169 | break; | |
170 | case SR_DF_END: | |
171 | g_free(o->internal); | |
172 | o->internal = NULL; | |
173 | break; | |
174 | default: | |
175 | sr_err("gnuplot out: %s: unsupported event type: %d", | |
176 | __func__, event_type); | |
177 | break; | |
178 | } | |
179 | ||
180 | *data_out = NULL; | |
181 | *length_out = 0; | |
182 | ||
183 | return SR_OK; | |
184 | } | |
185 | ||
186 | static int data(struct sr_output *o, const uint8_t *data_in, | |
187 | uint64_t length_in, uint8_t **data_out, uint64_t *length_out) | |
188 | { | |
189 | struct context *ctx; | |
190 | unsigned int max_linelen, outsize, p, curbit, i; | |
191 | uint64_t sample; | |
192 | static uint64_t samplecount = 0, old_sample = 0; | |
193 | uint8_t *outbuf, *c; | |
194 | ||
195 | if (!o) { | |
196 | sr_err("gnuplot out: %s: o was NULL", __func__); | |
197 | return SR_ERR_ARG; | |
198 | } | |
199 | ||
200 | if (!o->internal) { | |
201 | sr_err("gnuplot out: %s: o->internal was NULL", __func__); | |
202 | return SR_ERR_ARG; | |
203 | } | |
204 | ||
205 | if (!data_in) { | |
206 | sr_err("gnuplot out: %s: data_in was NULL", __func__); | |
207 | return SR_ERR_ARG; | |
208 | } | |
209 | ||
210 | if (!data_out) { | |
211 | sr_err("gnuplot out: %s: data_out was NULL", __func__); | |
212 | return SR_ERR_ARG; | |
213 | } | |
214 | ||
215 | if (!length_out) { | |
216 | sr_err("gnuplot out: %s: length_out was NULL", __func__); | |
217 | return SR_ERR_ARG; | |
218 | } | |
219 | ||
220 | ctx = o->internal; | |
221 | max_linelen = 16 + ctx->num_enabled_probes * 2; | |
222 | outsize = length_in / ctx->unitsize * max_linelen; | |
223 | if (ctx->header) | |
224 | outsize += strlen(ctx->header); | |
225 | ||
226 | if (!(outbuf = g_try_malloc0(outsize))) { | |
227 | sr_err("gnuplot out: %s: outbuf malloc failed", __func__); | |
228 | return SR_ERR_MALLOC; | |
229 | } | |
230 | ||
231 | outbuf[0] = '\0'; | |
232 | if (ctx->header) { | |
233 | /* The header is still here, this must be the first packet. */ | |
234 | strncpy((char *)outbuf, ctx->header, outsize); | |
235 | g_free(ctx->header); | |
236 | ctx->header = NULL; | |
237 | } | |
238 | ||
239 | for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) { | |
240 | ||
241 | memcpy(&sample, data_in + i, ctx->unitsize); | |
242 | ||
243 | /* | |
244 | * Don't output the same samples multiple times. However, make | |
245 | * sure to output at least the first and last sample. | |
246 | */ | |
247 | if (samplecount++ != 0 && sample == old_sample) { | |
248 | if (i != (length_in - ctx->unitsize)) | |
249 | continue; | |
250 | } | |
251 | old_sample = sample; | |
252 | ||
253 | /* The first column is a counter (needed for gnuplot). */ | |
254 | c = outbuf + strlen((const char *)outbuf); | |
255 | sprintf((char *)c, "%" PRIu64 "\t", samplecount++); | |
256 | ||
257 | /* The next columns are the values of all channels. */ | |
258 | for (p = 0; p < ctx->num_enabled_probes; p++) { | |
259 | curbit = (sample & ((uint64_t) (1 << p))) >> p; | |
260 | c = outbuf + strlen((const char *)outbuf); | |
261 | sprintf((char *)c, "%d ", curbit); | |
262 | } | |
263 | ||
264 | c = outbuf + strlen((const char *)outbuf); | |
265 | sprintf((char *)c, "\n"); | |
266 | } | |
267 | ||
268 | *data_out = outbuf; | |
269 | *length_out = strlen((const char *)outbuf); | |
270 | ||
271 | return SR_OK; | |
272 | } | |
273 | ||
274 | SR_PRIV struct sr_output_format output_gnuplot = { | |
275 | .id = "gnuplot", | |
276 | .description = "Gnuplot", | |
277 | .df_type = SR_DF_LOGIC, | |
278 | .init = init, | |
279 | .data = data, | |
280 | .event = event, | |
281 | }; | |
282 | ||
283 | /* Temporarily disabled. */ | |
284 | #if 0 | |
285 | static int analog_init(struct sr_output *o) | |
286 | { | |
287 | struct context *ctx; | |
288 | struct sr_probe *probe; | |
289 | GSList *l; | |
290 | uint64_t samplerate; | |
291 | unsigned int i; | |
292 | int b, num_probes; | |
293 | char *c, *frequency_s; | |
294 | char wbuf[1000], comment[128]; | |
295 | time_t t; | |
296 | ||
297 | if (!(ctx = g_try_malloc0(sizeof(struct context)))) { | |
298 | sr_err("gnuplot out: %s: ctx malloc failed", __func__); | |
299 | return SR_ERR_MALLOC; | |
300 | } | |
301 | ||
302 | if (!(ctx->header = g_try_malloc0(MAX_HEADER_LEN + 1))) { | |
303 | g_free(ctx); | |
304 | sr_err("gnuplot out: %s: ctx->header malloc failed", __func__); | |
305 | return SR_ERR_MALLOC; | |
306 | } | |
307 | ||
308 | o->internal = ctx; | |
309 | ctx->num_enabled_probes = 0; | |
310 | for (l = o->dev->probes; l; l = l->next) { | |
311 | probe = l->data; | |
312 | if (!probe->enabled) | |
313 | continue; | |
314 | ctx->probelist[ctx->num_enabled_probes++] = probe->name; | |
315 | } | |
316 | ctx->probelist[ctx->num_enabled_probes] = 0; | |
317 | // ctx->unitsize = (ctx->num_enabled_probes + 7) / 8; | |
318 | ctx->unitsize = sizeof(struct sr_analog_sample) + | |
319 | (ctx->num_enabled_probes * sizeof(struct sr_analog_probe)); | |
320 | ||
321 | num_probes = g_slist_length(o->dev->probes); | |
322 | comment[0] = '\0'; | |
323 | if (o->dev->driver && sr_dev_has_hwcap(o->dev, SR_HWCAP_SAMPLERATE)) { | |
324 | samplerate = *((uint64_t *) o->dev->driver->dev_info_get( | |
325 | o->dev->driver_index, SR_DI_CUR_SAMPLERATE)); | |
326 | if (!(frequency_s = sr_samplerate_string(samplerate))) { | |
327 | g_free(ctx->header); | |
328 | g_free(ctx); | |
329 | return SR_ERR; | |
330 | } | |
331 | snprintf(comment, 127, gnuplot_header_comment, | |
332 | ctx->num_enabled_probes, num_probes, frequency_s); | |
333 | g_free(frequency_s); | |
334 | } | |
335 | ||
336 | /* Columns / channels */ | |
337 | wbuf[0] = '\0'; | |
338 | for (i = 0; i < ctx->num_enabled_probes; i++) { | |
339 | c = (char *)&wbuf + strlen((char *)&wbuf); | |
340 | sprintf(c, "# %d\t\t%s\n", i + 1, ctx->probelist[i]); | |
341 | } | |
342 | ||
343 | if (!(frequency_s = sr_period_string(samplerate))) { | |
344 | g_free(ctx->header); | |
345 | g_free(ctx); | |
346 | return SR_ERR; | |
347 | } | |
348 | t = time(NULL); | |
349 | b = snprintf(ctx->header, MAX_HEADER_LEN, gnuplot_header, | |
350 | PACKAGE_STRING, ctime(&t), comment, frequency_s, | |
351 | (char *)&wbuf); | |
352 | g_free(frequency_s); | |
353 | ||
354 | if (b < 0) { | |
355 | g_free(ctx->header); | |
356 | g_free(ctx); | |
357 | return SR_ERR; | |
358 | } | |
359 | ||
360 | return 0; | |
361 | } | |
362 | ||
363 | static int analog_data(struct sr_output *o, uint8_t *data_in, | |
364 | uint64_t length_in, uint8_t **data_out, | |
365 | uint64_t *length_out) | |
366 | { | |
367 | struct context *ctx; | |
368 | unsigned int max_linelen, outsize, p, /* curbit, */ i; | |
369 | // uint64_t sample; | |
370 | static uint64_t samplecount = 0; | |
371 | uint8_t *outbuf, *c; | |
372 | struct sr_analog_sample *sample; | |
373 | ||
374 | ctx = o->internal; | |
375 | // max_linelen = 16 + ctx->num_enabled_probes * 2; | |
376 | max_linelen = 16 + ctx->num_enabled_probes * 30; | |
377 | outsize = length_in / ctx->unitsize * max_linelen; | |
378 | if (ctx->header) | |
379 | outsize += strlen(ctx->header); | |
380 | ||
381 | if (!(outbuf = g_try_malloc0(outsize))) { | |
382 | sr_err("gnuplot out: %s: outbuf malloc failed", __func__); | |
383 | return SR_ERR_MALLOC; | |
384 | } | |
385 | ||
386 | outbuf[0] = '\0'; | |
387 | if (ctx->header) { | |
388 | /* The header is still here, this must be the first packet. */ | |
389 | strncpy(outbuf, ctx->header, outsize); | |
390 | g_free(ctx->header); | |
391 | ctx->header = NULL; | |
392 | } | |
393 | ||
394 | for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) { | |
395 | // memcpy(&sample, data_in + i, ctx->unitsize); | |
396 | sample = (struct sr_analog_sample *) (data_in + i); | |
397 | ||
398 | /* The first column is a counter (needed for gnuplot). */ | |
399 | c = outbuf + strlen(outbuf); | |
400 | sprintf(c, "%" PRIu64 "\t", samplecount++); | |
401 | ||
402 | /* The next columns are the values of all channels. */ | |
403 | for (p = 0; p < ctx->num_enabled_probes; p++) { | |
404 | // curbit = (sample & ((uint64_t) (1 << p))) >> p; | |
405 | c = outbuf + strlen(outbuf); | |
406 | // sprintf(c, "%d ", curbit); | |
407 | /* | |
408 | * FIXME: Should be doing proper raw->voltage conversion | |
409 | * here, casting to int16_t isn't it. Remember that if | |
410 | * res = 1 conversion isn't necessary. | |
411 | */ | |
412 | sprintf(c, "%f ", (double) ((int16_t) (sample->probes[p].val & | |
413 | ((1 << sample->probes[p].res) - 1)))); | |
414 | } | |
415 | ||
416 | c = outbuf + strlen(outbuf); | |
417 | sprintf(c, "\n"); | |
418 | } | |
419 | ||
420 | *data_out = outbuf; | |
421 | *length_out = strlen(outbuf); | |
422 | ||
423 | return SR_OK; | |
424 | } | |
425 | ||
426 | struct sr_output_format output_analog_gnuplot = { | |
427 | .id = "analog_gnuplot", | |
428 | .description = "Gnuplot analog", | |
429 | .df_type = SR_DF_ANALOG, | |
430 | .init = analog_init, | |
431 | .data = analog_data, | |
432 | .event = event, | |
433 | }; | |
434 | #endif |