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dbd0aeff BV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 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 <glib.h> | |
23 | #include "libsigrok.h" | |
24 | #include "libsigrok-internal.h" | |
25 | ||
26 | #define LOG_PREFIX "output/bits" | |
27 | ||
28 | #define DEFAULT_SAMPLES_PER_LINE 64 | |
29 | ||
30 | struct context { | |
31 | unsigned int num_enabled_channels; | |
32 | int samples_per_line; | |
33 | int spl_cnt; | |
34 | int trigger; | |
35159a6b | 35 | uint64_t samplerate; |
dbd0aeff BV |
36 | int *channel_index; |
37 | char **channel_names; | |
35159a6b | 38 | gboolean header_done; |
dbd0aeff | 39 | GString **lines; |
dbd0aeff BV |
40 | }; |
41 | ||
42 | static int init(struct sr_output *o) | |
43 | { | |
44 | struct context *ctx; | |
45 | struct sr_channel *ch; | |
46 | GSList *l; | |
dba3e682 BV |
47 | GHashTableIter iter; |
48 | gpointer key, value; | |
dbd0aeff | 49 | unsigned int i, j; |
35159a6b | 50 | int spl; |
dbd0aeff BV |
51 | |
52 | if (!o || !o->sdi) | |
53 | return SR_ERR_ARG; | |
dba3e682 BV |
54 | |
55 | spl = DEFAULT_SAMPLES_PER_LINE; | |
56 | g_hash_table_iter_init(&iter, o->params); | |
57 | while (g_hash_table_iter_next(&iter, &key, &value)) { | |
58 | if (!strcmp(key, "width")) { | |
59 | if ((spl = strtoul(value, NULL, 10)) < 1) { | |
60 | sr_err("Invalid width."); | |
61 | return SR_ERR_ARG; | |
62 | } | |
63 | } else { | |
64 | sr_err("Unknown parameter '%s'.", key); | |
65 | return SR_ERR_ARG; | |
66 | } | |
67 | } | |
68 | ||
dbd0aeff BV |
69 | ctx = g_malloc0(sizeof(struct context)); |
70 | o->internal = ctx; | |
71 | ctx->trigger = -1; | |
dbd0aeff BV |
72 | ctx->samples_per_line = spl; |
73 | ||
74 | for (l = o->sdi->channels; l; l = l->next) { | |
75 | ch = l->data; | |
76 | if (ch->type != SR_CHANNEL_LOGIC) | |
77 | continue; | |
78 | if (!ch->enabled) | |
79 | continue; | |
80 | ctx->num_enabled_channels++; | |
81 | } | |
82 | ctx->channel_index = g_malloc(sizeof(int) * ctx->num_enabled_channels); | |
83 | ctx->channel_names = g_malloc(sizeof(char *) * ctx->num_enabled_channels); | |
84 | ctx->lines = g_malloc(sizeof(GString *) * ctx->num_enabled_channels); | |
85 | ||
86 | j = 0; | |
87 | for (i = 0, l = o->sdi->channels; l; l = l->next, i++) { | |
88 | ch = l->data; | |
89 | if (ch->type != SR_CHANNEL_LOGIC) | |
90 | continue; | |
91 | if (!ch->enabled) | |
92 | continue; | |
93 | ctx->channel_index[j] = ch->index; | |
94 | ctx->channel_names[j] = ch->name; | |
95 | ctx->lines[j] = g_string_sized_new(80); | |
96 | g_string_printf(ctx->lines[j], "%s:", ch->name); | |
97 | j++; | |
98 | } | |
99 | ||
35159a6b BV |
100 | return SR_OK; |
101 | } | |
102 | ||
103 | static GString *gen_header(struct sr_output *o) | |
104 | { | |
105 | struct context *ctx; | |
106 | GVariant *gvar; | |
107 | GString *header; | |
108 | int num_channels; | |
109 | char *samplerate_s; | |
110 | ||
111 | ctx = o->internal; | |
112 | if (ctx->samplerate == 0) { | |
113 | if (sr_config_get(o->sdi->driver, o->sdi, NULL, SR_CONF_SAMPLERATE, | |
114 | &gvar) == SR_OK) { | |
115 | ctx->samplerate = g_variant_get_uint64(gvar); | |
116 | g_variant_unref(gvar); | |
117 | } | |
118 | } | |
119 | ||
120 | header = g_string_sized_new(512); | |
121 | g_string_printf(header, "%s\n", PACKAGE_STRING); | |
dbd0aeff | 122 | num_channels = g_slist_length(o->sdi->channels); |
35159a6b BV |
123 | g_string_append_printf(header, "Acquisition with %d/%d channels", |
124 | ctx->num_enabled_channels, num_channels); | |
125 | if (ctx->samplerate != 0) { | |
126 | samplerate_s = sr_samplerate_string(ctx->samplerate); | |
127 | g_string_append_printf(header, " at %s", samplerate_s); | |
dbd0aeff | 128 | g_free(samplerate_s); |
dbd0aeff | 129 | } |
35159a6b | 130 | g_string_append_printf(header, "\n"); |
dbd0aeff | 131 | |
35159a6b | 132 | return header; |
dbd0aeff BV |
133 | } |
134 | ||
dba3e682 BV |
135 | static int receive(struct sr_output *o, const struct sr_datafeed_packet *packet, |
136 | GString **out) | |
dbd0aeff | 137 | { |
35159a6b | 138 | const struct sr_datafeed_meta *meta; |
dbd0aeff | 139 | const struct sr_datafeed_logic *logic; |
35159a6b | 140 | const struct sr_config *src; |
dbd0aeff | 141 | struct context *ctx; |
35159a6b | 142 | GSList *l; |
dbd0aeff BV |
143 | int idx, offset; |
144 | uint64_t i, j; | |
145 | gchar *p, c; | |
146 | ||
dbd0aeff BV |
147 | *out = NULL; |
148 | if (!o || !o->sdi) | |
149 | return SR_ERR_ARG; | |
150 | if (!(ctx = o->internal)) | |
151 | return SR_ERR_ARG; | |
152 | ||
153 | switch (packet->type) { | |
35159a6b BV |
154 | case SR_DF_META: |
155 | meta = packet->payload; | |
156 | for (l = meta->config; l; l = l->next) { | |
157 | src = l->data; | |
158 | if (src->key != SR_CONF_SAMPLERATE) | |
159 | continue; | |
160 | ctx->samplerate = g_variant_get_uint64(src->data); | |
161 | } | |
162 | break; | |
dbd0aeff BV |
163 | case SR_DF_TRIGGER: |
164 | ctx->trigger = ctx->spl_cnt; | |
165 | break; | |
166 | case SR_DF_LOGIC: | |
35159a6b BV |
167 | if (!ctx->header_done) { |
168 | *out = gen_header(o); | |
169 | ctx->header_done = TRUE; | |
dbd0aeff BV |
170 | } else |
171 | *out = g_string_sized_new(512); | |
172 | ||
173 | logic = packet->payload; | |
174 | for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) { | |
175 | ctx->spl_cnt++; | |
176 | for (j = 0; j < ctx->num_enabled_channels; j++) { | |
177 | idx = ctx->channel_index[j]; | |
178 | p = logic->data + i + idx / 8; | |
179 | c = (*p & (1 << (idx % 8))) ? '1' : '0'; | |
180 | g_string_append_c(ctx->lines[j], c); | |
181 | ||
182 | if (ctx->spl_cnt == ctx->samples_per_line) { | |
183 | /* Flush line buffers. */ | |
184 | g_string_append_len(*out, ctx->lines[j]->str, ctx->lines[j]->len); | |
185 | g_string_append_c(*out, '\n'); | |
186 | if (j == ctx->num_enabled_channels - 1 && ctx->trigger > -1) { | |
187 | offset = ctx->trigger + ctx->trigger / 8; | |
188 | g_string_append_printf(*out, "T:%*s^ %d\n", offset, "", ctx->trigger); | |
189 | ctx->trigger = -1; | |
190 | } | |
191 | g_string_printf(ctx->lines[j], "%s:", ctx->channel_names[j]); | |
192 | } else if ((ctx->spl_cnt & 7) == 0) { | |
193 | /* Add a space every 8th bit. */ | |
194 | g_string_append_c(ctx->lines[j], ' '); | |
195 | } | |
196 | } | |
197 | if (ctx->spl_cnt == ctx->samples_per_line) | |
198 | /* Line buffers were already flushed. */ | |
199 | ctx->spl_cnt = 0; | |
200 | } | |
201 | break; | |
202 | case SR_DF_END: | |
203 | if (ctx->spl_cnt) { | |
204 | /* Line buffers need flushing. */ | |
205 | *out = g_string_sized_new(512); | |
206 | for (i = 0; i < ctx->num_enabled_channels; i++) { | |
207 | g_string_append_len(*out, ctx->lines[i]->str, ctx->lines[i]->len); | |
208 | g_string_append_c(*out, '\n'); | |
209 | } | |
210 | } | |
211 | break; | |
212 | } | |
213 | ||
214 | return SR_OK; | |
215 | } | |
216 | ||
217 | static int cleanup(struct sr_output *o) | |
218 | { | |
219 | struct context *ctx; | |
220 | unsigned int i; | |
221 | ||
222 | if (!o) | |
223 | return SR_ERR_ARG; | |
224 | ||
225 | if (!(ctx = o->internal)) | |
226 | return SR_OK; | |
227 | ||
dbd0aeff BV |
228 | g_free(ctx->channel_index); |
229 | g_free(ctx->channel_names); | |
230 | for (i = 0; i < ctx->num_enabled_channels; i++) | |
231 | g_string_free(ctx->lines[i], TRUE); | |
232 | g_free(ctx->lines); | |
dbd0aeff BV |
233 | g_free(ctx); |
234 | o->internal = NULL; | |
235 | ||
236 | return SR_OK; | |
237 | } | |
238 | ||
239 | SR_PRIV struct sr_output_format output_bits = { | |
240 | .id = "bits", | |
241 | .description = "Bits", | |
242 | .init = init, | |
243 | .receive = receive, | |
244 | .cleanup = cleanup, | |
245 | }; |