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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 <config.h> | |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
23 | #include <glib.h> | |
24 | #include <libsigrok/libsigrok.h> | |
25 | #include "libsigrok-internal.h" | |
26 | ||
27 | #define LOG_PREFIX "output/hex" | |
28 | ||
29 | #define DEFAULT_SAMPLES_PER_LINE 192 | |
30 | ||
31 | struct context { | |
32 | unsigned int num_enabled_channels; | |
33 | int spl; | |
34 | int bit_cnt; | |
35 | int spl_cnt; | |
36 | int trigger; | |
37 | uint64_t samplerate; | |
38 | int *channel_index; | |
39 | char **channel_names; | |
40 | char **line_values; | |
41 | uint8_t *sample_buf; | |
42 | gboolean header_done; | |
43 | GString **lines; | |
44 | }; | |
45 | ||
46 | static int init(struct sr_output *o, GHashTable *options) | |
47 | { | |
48 | struct context *ctx; | |
49 | struct sr_channel *ch; | |
50 | GSList *l; | |
51 | unsigned int i, j; | |
52 | ||
53 | if (!o || !o->sdi) | |
54 | return SR_ERR_ARG; | |
55 | ||
56 | ctx = g_malloc0(sizeof(struct context)); | |
57 | o->priv = ctx; | |
58 | ctx->trigger = -1; | |
59 | ctx->spl = g_variant_get_uint32(g_hash_table_lookup(options, "width")); | |
60 | ||
61 | for (l = o->sdi->channels; l; l = l->next) { | |
62 | ch = l->data; | |
63 | if (ch->type != SR_CHANNEL_LOGIC) | |
64 | continue; | |
65 | if (!ch->enabled) | |
66 | continue; | |
67 | ctx->num_enabled_channels++; | |
68 | } | |
69 | ctx->channel_index = g_malloc(sizeof(int) * ctx->num_enabled_channels); | |
70 | ctx->channel_names = g_malloc(sizeof(char *) * ctx->num_enabled_channels); | |
71 | ctx->lines = g_malloc(sizeof(GString *) * ctx->num_enabled_channels); | |
72 | ctx->sample_buf = g_malloc(ctx->num_enabled_channels); | |
73 | ||
74 | j = 0; | |
75 | for (i = 0, l = o->sdi->channels; l; l = l->next, i++) { | |
76 | ch = l->data; | |
77 | if (ch->type != SR_CHANNEL_LOGIC) | |
78 | continue; | |
79 | if (!ch->enabled) | |
80 | continue; | |
81 | ctx->channel_index[j] = ch->index; | |
82 | ctx->channel_names[j] = ch->name; | |
83 | ctx->lines[j] = g_string_sized_new(80); | |
84 | ctx->sample_buf[j] = 0; | |
85 | g_string_printf(ctx->lines[j], "%s:", ch->name); | |
86 | j++; | |
87 | } | |
88 | ||
89 | return SR_OK; | |
90 | } | |
91 | ||
92 | static GString *gen_header(const struct sr_output *o) | |
93 | { | |
94 | struct context *ctx; | |
95 | GVariant *gvar; | |
96 | GString *header; | |
97 | int num_channels; | |
98 | char *samplerate_s; | |
99 | ||
100 | ctx = o->priv; | |
101 | if (ctx->samplerate == 0) { | |
102 | if (sr_config_get(o->sdi->driver, o->sdi, NULL, SR_CONF_SAMPLERATE, | |
103 | &gvar) == SR_OK) { | |
104 | ctx->samplerate = g_variant_get_uint64(gvar); | |
105 | g_variant_unref(gvar); | |
106 | } | |
107 | } | |
108 | ||
109 | header = g_string_sized_new(512); | |
110 | g_string_printf(header, "%s %s\n", PACKAGE_NAME, SR_PACKAGE_VERSION_STRING); | |
111 | num_channels = g_slist_length(o->sdi->channels); | |
112 | g_string_append_printf(header, "Acquisition with %d/%d channels", | |
113 | ctx->num_enabled_channels, num_channels); | |
114 | if (ctx->samplerate != 0) { | |
115 | samplerate_s = sr_samplerate_string(ctx->samplerate); | |
116 | g_string_append_printf(header, " at %s", samplerate_s); | |
117 | g_free(samplerate_s); | |
118 | } | |
119 | g_string_append_printf(header, "\n"); | |
120 | ||
121 | return header; | |
122 | } | |
123 | ||
124 | static int receive(const struct sr_output *o, const struct sr_datafeed_packet *packet, | |
125 | GString **out) | |
126 | { | |
127 | const struct sr_datafeed_meta *meta; | |
128 | const struct sr_datafeed_logic *logic; | |
129 | const struct sr_config *src; | |
130 | GSList *l; | |
131 | struct context *ctx; | |
132 | int idx, pos, offset; | |
133 | uint64_t i, j; | |
134 | gchar *p; | |
135 | ||
136 | *out = NULL; | |
137 | if (!o || !o->sdi) | |
138 | return SR_ERR_ARG; | |
139 | if (!(ctx = o->priv)) | |
140 | return SR_ERR_ARG; | |
141 | ||
142 | switch (packet->type) { | |
143 | case SR_DF_META: | |
144 | meta = packet->payload; | |
145 | for (l = meta->config; l; l = l->next) { | |
146 | src = l->data; | |
147 | if (src->key != SR_CONF_SAMPLERATE) | |
148 | continue; | |
149 | ctx->samplerate = g_variant_get_uint64(src->data); | |
150 | } | |
151 | break; | |
152 | case SR_DF_TRIGGER: | |
153 | ctx->trigger = ctx->spl_cnt; | |
154 | break; | |
155 | case SR_DF_LOGIC: | |
156 | if (!ctx->header_done) { | |
157 | *out = gen_header(o); | |
158 | ctx->header_done = TRUE; | |
159 | } else | |
160 | *out = g_string_sized_new(512); | |
161 | ||
162 | logic = packet->payload; | |
163 | for (i = 0; i <= logic->length - logic->unitsize; i += logic->unitsize) { | |
164 | ctx->spl_cnt++; | |
165 | pos = ctx->spl_cnt & 7; | |
166 | for (j = 0; j < ctx->num_enabled_channels; j++) { | |
167 | idx = ctx->channel_index[j]; | |
168 | p = logic->data + i + idx / 8; | |
169 | ctx->sample_buf[j] <<= 1; | |
170 | if (*p & (1 << (idx % 8))) | |
171 | ctx->sample_buf[j] |= 1; | |
172 | if (ctx->spl_cnt && pos == 0) { | |
173 | /* Buffered a byte's worth, output hex. */ | |
174 | g_string_append_printf(ctx->lines[j], "%.2x ", | |
175 | ctx->sample_buf[j]); | |
176 | ctx->sample_buf[j] = 0; | |
177 | } | |
178 | ||
179 | if (ctx->spl_cnt == ctx->spl) { | |
180 | /* Flush line buffers. */ | |
181 | g_string_append_len(*out, ctx->lines[j]->str, ctx->lines[j]->len); | |
182 | g_string_append_c(*out, '\n'); | |
183 | if (j == ctx->num_enabled_channels - 1 && ctx->trigger > -1) { | |
184 | offset = ctx->trigger + ctx->trigger / 8; | |
185 | g_string_append_printf(*out, "T:%*s^ %d\n", offset, "", ctx->trigger); | |
186 | ctx->trigger = -1; | |
187 | } | |
188 | g_string_printf(ctx->lines[j], "%s:", ctx->channel_names[j]); | |
189 | } | |
190 | } | |
191 | if (ctx->spl_cnt == ctx->spl) | |
192 | /* Line buffers were already flushed. */ | |
193 | ctx->spl_cnt = 0; | |
194 | } | |
195 | break; | |
196 | case SR_DF_END: | |
197 | if (ctx->spl_cnt) { | |
198 | /* Line buffers need flushing. */ | |
199 | *out = g_string_sized_new(512); | |
200 | for (i = 0; i < ctx->num_enabled_channels; i++) { | |
201 | if (ctx->spl_cnt & 7) | |
202 | g_string_append_printf(ctx->lines[i], "%.2x ", | |
203 | ctx->sample_buf[i] << (8 - (ctx->spl_cnt & 7))); | |
204 | g_string_append_len(*out, ctx->lines[i]->str, ctx->lines[i]->len); | |
205 | g_string_append_c(*out, '\n'); | |
206 | } | |
207 | } | |
208 | break; | |
209 | } | |
210 | ||
211 | return SR_OK; | |
212 | } | |
213 | ||
214 | static int cleanup(struct sr_output *o) | |
215 | { | |
216 | struct context *ctx; | |
217 | unsigned int i; | |
218 | ||
219 | if (!o) | |
220 | return SR_ERR_ARG; | |
221 | ||
222 | if (!(ctx = o->priv)) | |
223 | return SR_OK; | |
224 | ||
225 | g_free(ctx->channel_index); | |
226 | g_free(ctx->sample_buf); | |
227 | g_free(ctx->channel_names); | |
228 | for (i = 0; i < ctx->num_enabled_channels; i++) | |
229 | g_string_free(ctx->lines[i], TRUE); | |
230 | g_free(ctx->lines); | |
231 | g_free(ctx); | |
232 | o->priv = NULL; | |
233 | ||
234 | return SR_OK; | |
235 | } | |
236 | ||
237 | static struct sr_option options[] = { | |
238 | { "width", "Width", "Number of samples per line", NULL, NULL }, | |
239 | ALL_ZERO | |
240 | }; | |
241 | ||
242 | static const struct sr_option *get_options(void) | |
243 | { | |
244 | if (!options[0].def) { | |
245 | options[0].def = g_variant_new_uint32(DEFAULT_SAMPLES_PER_LINE); | |
246 | g_variant_ref_sink(options[0].def); | |
247 | } | |
248 | ||
249 | return options; | |
250 | } | |
251 | ||
252 | SR_PRIV struct sr_output_module output_hex = { | |
253 | .id = "hex", | |
254 | .name = "Hexadecimal", | |
255 | .desc = "Hexadecimal digits", | |
256 | .exts = (const char*[]){"txt", NULL}, | |
257 | .flags = 0, | |
258 | .options = get_options, | |
259 | .init = init, | |
260 | .receive = receive, | |
261 | .cleanup = cleanup, | |
262 | }; |