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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/hex" | |
27 | ||
28 | #define DEFAULT_SAMPLES_PER_LINE 192 | |
29 | ||
30 | struct context { | |
31 | unsigned int num_enabled_channels; | |
32 | int spl; | |
33 | int bit_cnt; | |
34 | int spl_cnt; | |
35 | int trigger; | |
36 | uint64_t samplerate; | |
37 | int *channel_index; | |
38 | char **channel_names; | |
39 | char **line_values; | |
40 | uint8_t *sample_buf; | |
41 | gboolean header_done; | |
42 | GString **lines; | |
43 | }; | |
44 | ||
45 | static int init(struct sr_output *o, GHashTable *options) | |
46 | { | |
47 | struct context *ctx; | |
48 | struct sr_channel *ch; | |
49 | GSList *l; | |
50 | unsigned int i, j; | |
51 | ||
52 | if (!o || !o->sdi) | |
53 | return SR_ERR_ARG; | |
54 | ||
55 | ctx = g_malloc0(sizeof(struct context)); | |
56 | o->priv = ctx; | |
57 | ctx->trigger = -1; | |
58 | ctx->spl = g_variant_get_uint32(g_hash_table_lookup(options, "width")); | |
59 | ||
60 | for (l = o->sdi->channels; l; l = l->next) { | |
61 | ch = l->data; | |
62 | if (ch->type != SR_CHANNEL_LOGIC) | |
63 | continue; | |
64 | if (!ch->enabled) | |
65 | continue; | |
66 | ctx->num_enabled_channels++; | |
67 | } | |
68 | ctx->channel_index = g_malloc(sizeof(int) * ctx->num_enabled_channels); | |
69 | ctx->channel_names = g_malloc(sizeof(char *) * ctx->num_enabled_channels); | |
70 | ctx->lines = g_malloc(sizeof(GString *) * ctx->num_enabled_channels); | |
71 | ctx->sample_buf = g_malloc(ctx->num_enabled_channels); | |
72 | ||
73 | j = 0; | |
74 | for (i = 0, l = o->sdi->channels; l; l = l->next, i++) { | |
75 | ch = l->data; | |
76 | if (ch->type != SR_CHANNEL_LOGIC) | |
77 | continue; | |
78 | if (!ch->enabled) | |
79 | continue; | |
80 | ctx->channel_index[j] = ch->index; | |
81 | ctx->channel_names[j] = ch->name; | |
82 | ctx->lines[j] = g_string_sized_new(80); | |
83 | ctx->sample_buf[j] = 0; | |
84 | g_string_printf(ctx->lines[j], "%s:", ch->name); | |
85 | j++; | |
86 | } | |
87 | ||
88 | return SR_OK; | |
89 | } | |
90 | ||
91 | static GString *gen_header(const struct sr_output *o) | |
92 | { | |
93 | struct context *ctx; | |
94 | GVariant *gvar; | |
95 | GString *header; | |
96 | int num_channels; | |
97 | char *samplerate_s; | |
98 | ||
99 | ctx = o->priv; | |
100 | if (ctx->samplerate == 0) { | |
101 | if (sr_config_get(o->sdi->driver, o->sdi, NULL, SR_CONF_SAMPLERATE, | |
102 | &gvar) == SR_OK) { | |
103 | ctx->samplerate = g_variant_get_uint64(gvar); | |
104 | g_variant_unref(gvar); | |
105 | } | |
106 | } | |
107 | ||
108 | header = g_string_sized_new(512); | |
109 | g_string_printf(header, "%s\n", PACKAGE_STRING); | |
110 | num_channels = g_slist_length(o->sdi->channels); | |
111 | g_string_append_printf(header, "Acquisition with %d/%d channels", | |
112 | ctx->num_enabled_channels, num_channels); | |
113 | if (ctx->samplerate != 0) { | |
114 | samplerate_s = sr_samplerate_string(ctx->samplerate); | |
115 | g_string_append_printf(header, " at %s", samplerate_s); | |
116 | g_free(samplerate_s); | |
117 | } | |
118 | g_string_append_printf(header, "\n"); | |
119 | ||
120 | return header; | |
121 | } | |
122 | ||
123 | static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet, | |
124 | GString **out) | |
125 | { | |
126 | const struct sr_datafeed_meta *meta; | |
127 | const struct sr_datafeed_logic *logic; | |
128 | const struct sr_config *src; | |
129 | GSList *l; | |
130 | struct context *ctx; | |
131 | int idx, pos, offset; | |
132 | uint64_t i, j; | |
133 | gchar *p; | |
134 | ||
135 | *out = NULL; | |
136 | if (!o || !o->sdi) | |
137 | return SR_ERR_ARG; | |
138 | if (!(ctx = o->priv)) | |
139 | return SR_ERR_ARG; | |
140 | ||
141 | switch (packet->type) { | |
142 | case SR_DF_META: | |
143 | meta = packet->payload; | |
144 | for (l = meta->config; l; l = l->next) { | |
145 | src = l->data; | |
146 | if (src->key != SR_CONF_SAMPLERATE) | |
147 | continue; | |
148 | ctx->samplerate = g_variant_get_uint64(src->data); | |
149 | } | |
150 | break; | |
151 | case SR_DF_TRIGGER: | |
152 | ctx->trigger = ctx->spl_cnt; | |
153 | break; | |
154 | case SR_DF_LOGIC: | |
155 | if (!ctx->header_done) { | |
156 | *out = gen_header(o); | |
157 | ctx->header_done = TRUE; | |
158 | } else | |
159 | *out = g_string_sized_new(512); | |
160 | ||
161 | logic = packet->payload; | |
162 | for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) { | |
163 | ctx->spl_cnt++; | |
164 | pos = ctx->spl_cnt & 7; | |
165 | for (j = 0; j < ctx->num_enabled_channels; j++) { | |
166 | idx = ctx->channel_index[j]; | |
167 | p = logic->data + i + idx / 8; | |
168 | ctx->sample_buf[j] <<= 1; | |
169 | if (*p & (1 << (idx % 8))) | |
170 | ctx->sample_buf[j] |= 1; | |
171 | if (ctx->spl_cnt && pos == 0) { | |
172 | /* Buffered a byte's worth, output hex. */ | |
173 | g_string_append_printf(ctx->lines[j], "%.2x ", | |
174 | ctx->sample_buf[j]); | |
175 | ctx->sample_buf[j] = 0; | |
176 | } | |
177 | ||
178 | if (ctx->spl_cnt == ctx->spl) { | |
179 | /* Flush line buffers. */ | |
180 | g_string_append_len(*out, ctx->lines[j]->str, ctx->lines[j]->len); | |
181 | g_string_append_c(*out, '\n'); | |
182 | if (j == ctx->num_enabled_channels - 1 && ctx->trigger > -1) { | |
183 | offset = ctx->trigger + ctx->trigger / 8; | |
184 | g_string_append_printf(*out, "T:%*s^ %d\n", offset, "", ctx->trigger); | |
185 | ctx->trigger = -1; | |
186 | } | |
187 | g_string_printf(ctx->lines[j], "%s:", ctx->channel_names[j]); | |
188 | } | |
189 | } | |
190 | if (ctx->spl_cnt == ctx->spl) | |
191 | /* Line buffers were already flushed. */ | |
192 | ctx->spl_cnt = 0; | |
193 | } | |
194 | break; | |
195 | case SR_DF_END: | |
196 | if (ctx->spl_cnt) { | |
197 | /* Line buffers need flushing. */ | |
198 | *out = g_string_sized_new(512); | |
199 | for (i = 0; i < ctx->num_enabled_channels; i++) { | |
200 | if (ctx->spl_cnt & 7) | |
201 | g_string_append_printf(ctx->lines[i], "%.2x ", | |
202 | ctx->sample_buf[i] << (8 - (ctx->spl_cnt & 7))); | |
203 | g_string_append_len(*out, ctx->lines[i]->str, ctx->lines[i]->len); | |
204 | g_string_append_c(*out, '\n'); | |
205 | } | |
206 | } | |
207 | break; | |
208 | } | |
209 | ||
210 | return SR_OK; | |
211 | } | |
212 | ||
213 | static int cleanup(struct sr_output *o) | |
214 | { | |
215 | struct context *ctx; | |
216 | unsigned int i; | |
217 | ||
218 | if (!o) | |
219 | return SR_ERR_ARG; | |
220 | ||
221 | if (!(ctx = o->priv)) | |
222 | return SR_OK; | |
223 | ||
224 | g_free(ctx->channel_index); | |
225 | g_free(ctx->sample_buf); | |
226 | g_free(ctx->channel_names); | |
227 | for (i = 0; i < ctx->num_enabled_channels; i++) | |
228 | g_string_free(ctx->lines[i], TRUE); | |
229 | g_free(ctx->lines); | |
230 | g_free(ctx); | |
231 | o->priv = NULL; | |
232 | ||
233 | return SR_OK; | |
234 | } | |
235 | ||
236 | static struct sr_option options[] = { | |
237 | { "width", "Width", "Number of samples per line", NULL, NULL }, | |
238 | ALL_ZERO | |
239 | }; | |
240 | ||
241 | static const struct sr_option *get_options(void) | |
242 | { | |
243 | if (!options[0].def) { | |
244 | options[0].def = g_variant_new_uint32(DEFAULT_SAMPLES_PER_LINE); | |
245 | g_variant_ref_sink(options[0].def); | |
246 | } | |
247 | ||
248 | return options; | |
249 | } | |
250 | ||
251 | SR_PRIV struct sr_output_module output_hex = { | |
252 | .id = "hex", | |
253 | .name = "Hexadecimal", | |
254 | .desc = "Hexadecimal digits", | |
255 | .options = get_options, | |
256 | .init = init, | |
257 | .receive = receive, | |
258 | .cleanup = cleanup, | |
259 | }; | |
260 |