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1437e893 BV |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2011 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 <stdint.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <sigrok.h> | |
24 | #include <config.h> | |
25 | ||
26 | ||
9b36e360 | 27 | #define DEFAULT_SAMPLES_PER_LINE 10 |
1437e893 BV |
28 | /* -10.25 */ |
29 | #define VALUE_LEN 6 | |
30 | ||
31 | struct context { | |
32 | char *header; | |
33 | unsigned int num_enabled_probes; | |
34 | char *probelist[MAX_NUM_PROBES]; | |
35 | int samples_per_line; | |
36 | unsigned int unitsize; | |
37 | int line_offset; | |
38 | int linebuf_len; | |
39 | char *linebuf; | |
40 | int spl_cnt; | |
41 | int mark_trigger; | |
42 | }; | |
43 | ||
44 | ||
45 | static void flush_linebufs(struct context *ctx, char *outbuf) | |
46 | { | |
47 | static int max_probename_len = 0; | |
48 | int len, i; | |
49 | ||
50 | if (ctx->linebuf[0] == 0) | |
51 | return; | |
52 | ||
53 | if (max_probename_len == 0) { | |
54 | /* First time through... */ | |
55 | for (i = 0; ctx->probelist[i]; i++) { | |
56 | len = strlen(ctx->probelist[i]); | |
57 | if (len > max_probename_len) | |
58 | max_probename_len = len; | |
59 | } | |
60 | } | |
61 | ||
62 | for (i = 0; ctx->probelist[i]; i++) { | |
63 | sprintf(outbuf + strlen(outbuf), "%*s:%s\n", max_probename_len, | |
64 | ctx->probelist[i], ctx->linebuf + i * ctx->linebuf_len); | |
65 | } | |
66 | ||
67 | /* Mark trigger with a ^ character. */ | |
68 | if (ctx->mark_trigger != -1) | |
69 | sprintf(outbuf + strlen(outbuf), "T:%*s^\n", | |
70 | ctx->mark_trigger * (VALUE_LEN+1), ""); | |
71 | ||
72 | memset(ctx->linebuf, 0, i * ctx->linebuf_len); | |
73 | } | |
74 | ||
75 | static int init(struct output *o) | |
76 | { | |
77 | struct context *ctx; | |
78 | struct probe *probe; | |
79 | GSList *l; | |
80 | uint64_t samplerate; | |
81 | int num_probes; | |
82 | char *samplerate_s; | |
83 | ||
84 | if (!(ctx = calloc(1, sizeof(struct context)))) | |
85 | return SIGROK_ERR_MALLOC; | |
86 | ||
87 | if (!(ctx->header = malloc(512))) { | |
88 | free(ctx); | |
89 | return SIGROK_ERR_MALLOC; | |
90 | } | |
91 | ||
92 | o->internal = ctx; | |
1437e893 BV |
93 | ctx->num_enabled_probes = 0; |
94 | ctx->mark_trigger = -1; | |
9b36e360 BV |
95 | if (o->param && o->param[0]) { |
96 | ctx->samples_per_line = strtoul(o->param, NULL, 10); | |
97 | if (ctx->samples_per_line < 1) | |
98 | return SIGROK_ERR; | |
99 | } else | |
100 | ctx->samples_per_line = DEFAULT_SAMPLES_PER_LINE; | |
101 | ||
1437e893 BV |
102 | for (l = o->device->probes; l; l = l->next) { |
103 | probe = l->data; | |
104 | if (!probe->enabled) | |
105 | continue; | |
106 | ctx->probelist[ctx->num_enabled_probes++] = probe->name; | |
107 | } | |
108 | ctx->unitsize = sizeof(double) * ctx->num_enabled_probes; | |
109 | ||
110 | snprintf(ctx->header, 511, "%s\n", PACKAGE_STRING); | |
111 | if (o->device->plugin) { | |
112 | num_probes = g_slist_length(o->device->probes); | |
113 | samplerate = *((uint64_t *) o->device->plugin->get_device_info( | |
114 | o->device->plugin_index, DI_CUR_SAMPLERATE)); | |
115 | if (!(samplerate_s = sigrok_samplerate_string(samplerate))) { | |
116 | free(ctx->header); | |
117 | free(ctx); | |
118 | return SIGROK_ERR; | |
119 | } | |
120 | snprintf(ctx->header + strlen(ctx->header), | |
121 | 511 - strlen(ctx->header), | |
122 | "Acquisition with %d/%d probes at %s\n", | |
123 | ctx->num_enabled_probes, num_probes, samplerate_s); | |
124 | free(samplerate_s); | |
125 | } | |
126 | ||
127 | ctx->linebuf_len = MAX_PROBENAME_LEN + ctx->samples_per_line * VALUE_LEN | |
128 | + ctx->samples_per_line + 4; | |
129 | if (!(ctx->linebuf = calloc(1, ctx->num_enabled_probes * ctx->linebuf_len))) { | |
130 | free(ctx->header); | |
131 | free(ctx); | |
132 | return SIGROK_ERR_MALLOC; | |
133 | } | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | static int data(struct output *o, char *data_in, uint64_t length_in, | |
139 | char **data_out, uint64_t *length_out) | |
140 | { | |
141 | struct context *ctx; | |
142 | double probe_sample; | |
143 | unsigned int max_linelen, outsize, offset, p; | |
144 | char *outbuf, s[VALUE_LEN+2]; | |
145 | ||
146 | ctx = o->internal; | |
147 | max_linelen = MAX_PROBENAME_LEN + 3 + ctx->samples_per_line * VALUE_LEN | |
148 | + ctx->samples_per_line / 8; | |
149 | outsize = length_in / ctx->unitsize * ctx->num_enabled_probes | |
150 | / ctx->samples_per_line * max_linelen + 512; | |
151 | if (!(outbuf = calloc(1, outsize + 1))) | |
152 | return SIGROK_ERR_MALLOC; | |
153 | ||
154 | outbuf[0] = '\0'; | |
155 | if (ctx->header) { | |
156 | /* The header is still here, this must be the first packet. */ | |
157 | strncpy(outbuf, ctx->header, outsize); | |
158 | free(ctx->header); | |
159 | ctx->header = NULL; | |
160 | } | |
161 | ||
162 | if (length_in >= ctx->unitsize) { | |
163 | for (offset = 0; offset <= length_in - ctx->unitsize; | |
164 | offset += ctx->unitsize) { | |
165 | for (p = 0; p < ctx->num_enabled_probes; p++) { | |
166 | memcpy(&probe_sample, data_in + offset * p, sizeof(double)); | |
167 | snprintf(s, VALUE_LEN+2, "% 6.2f ", probe_sample); | |
168 | strcat(ctx->linebuf + p * ctx->linebuf_len + ctx->line_offset, s); | |
169 | ctx->line_offset += strlen(s); | |
170 | ctx->spl_cnt++; | |
171 | } | |
172 | ||
173 | /* End of line. */ | |
174 | if (ctx->spl_cnt >= ctx->samples_per_line) { | |
175 | flush_linebufs(ctx, outbuf); | |
176 | ctx->line_offset = ctx->spl_cnt = 0; | |
177 | ctx->mark_trigger = -1; | |
178 | } | |
179 | ||
180 | ||
181 | } | |
182 | } else { | |
183 | g_message("short buffer (length_in=%" PRIu64 ")", length_in); | |
184 | } | |
185 | ||
186 | *data_out = outbuf; | |
187 | *length_out = strlen(outbuf); | |
188 | ||
189 | return SIGROK_OK; | |
190 | } | |
191 | ||
192 | static int event(struct output *o, int event_type, char **data_out, | |
193 | uint64_t *length_out) | |
194 | { | |
195 | struct context *ctx; | |
196 | ||
197 | ctx = o->internal; | |
198 | switch (event_type) { | |
199 | case DF_TRIGGER: | |
200 | ctx->mark_trigger = ctx->spl_cnt; | |
201 | break; | |
202 | case DF_END: | |
203 | if (ctx->header) | |
204 | free(ctx->header); | |
205 | free(ctx->linebuf); | |
206 | free(o->internal); | |
207 | o->internal = NULL; | |
208 | break; | |
209 | } | |
210 | ||
211 | *data_out = NULL; | |
212 | *length_out = 0; | |
213 | ||
214 | return SIGROK_OK; | |
215 | } | |
216 | ||
217 | struct output_format output_analog = { | |
218 | "analog", | |
219 | "Analog data", | |
220 | DF_ANALOG, | |
221 | init, | |
222 | data, | |
223 | event, | |
224 | }; | |
225 |