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47a102f9 GS |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2020 Gerhard Sittig <gerhard.sittig@gmx.net> | |
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 <libsigrok/libsigrok.h> | |
21 | #include "libsigrok-internal.h" | |
22 | #include <string.h> | |
23 | ||
24 | struct feed_queue_logic { | |
57140e5a | 25 | const struct sr_dev_inst *sdi; |
47a102f9 GS |
26 | size_t unit_size; |
27 | size_t alloc_count; | |
28 | size_t fill_count; | |
29 | uint8_t *data_bytes; | |
30 | struct sr_datafeed_packet packet; | |
31 | struct sr_datafeed_logic logic; | |
32 | }; | |
33 | ||
57140e5a GS |
34 | SR_API struct feed_queue_logic *feed_queue_logic_alloc( |
35 | const struct sr_dev_inst *sdi, | |
47a102f9 GS |
36 | size_t sample_count, size_t unit_size) |
37 | { | |
38 | struct feed_queue_logic *q; | |
39 | ||
40 | q = g_malloc0(sizeof(*q)); | |
41 | q->sdi = sdi; | |
42 | q->unit_size = unit_size; | |
43 | q->alloc_count = sample_count; | |
44 | q->data_bytes = g_try_malloc(q->alloc_count * q->unit_size); | |
45 | if (!q->data_bytes) { | |
46 | g_free(q); | |
47 | return NULL; | |
48 | } | |
49 | ||
50 | memset(&q->packet, 0, sizeof(q->packet)); | |
51 | memset(&q->logic, 0, sizeof(q->logic)); | |
52 | q->packet.type = SR_DF_LOGIC; | |
53 | q->packet.payload = &q->logic; | |
54 | q->logic.unitsize = q->unit_size; | |
55 | q->logic.data = q->data_bytes; | |
56 | ||
57 | return q; | |
58 | } | |
59 | ||
f40d8479 GS |
60 | SR_API int feed_queue_logic_submit_one(struct feed_queue_logic *q, |
61 | const uint8_t *data, size_t repeat_count) | |
47a102f9 GS |
62 | { |
63 | uint8_t *wrptr; | |
64 | int ret; | |
65 | ||
66 | wrptr = &q->data_bytes[q->fill_count * q->unit_size]; | |
f40d8479 | 67 | while (repeat_count--) { |
47a102f9 GS |
68 | memcpy(wrptr, data, q->unit_size); |
69 | wrptr += q->unit_size; | |
70 | q->fill_count++; | |
71 | if (q->fill_count == q->alloc_count) { | |
72 | ret = feed_queue_logic_flush(q); | |
73 | if (ret != SR_OK) | |
74 | return ret; | |
75 | wrptr = &q->data_bytes[0]; | |
76 | } | |
77 | } | |
78 | ||
79 | return SR_OK; | |
80 | } | |
81 | ||
f70db77a GS |
82 | SR_API int feed_queue_logic_submit_many(struct feed_queue_logic *q, |
83 | const uint8_t *data, size_t samples_count) | |
84 | { | |
85 | uint8_t *wrptr; | |
86 | size_t space, copy_count; | |
87 | int ret; | |
88 | ||
89 | wrptr = &q->data_bytes[q->fill_count * q->unit_size]; | |
90 | while (samples_count) { | |
91 | space = q->alloc_count - q->fill_count; | |
92 | copy_count = samples_count; | |
93 | if (copy_count > space) | |
94 | copy_count = space; | |
95 | memcpy(wrptr, data, copy_count * q->unit_size); | |
96 | data += copy_count * q->unit_size; | |
97 | samples_count -= copy_count; | |
98 | wrptr += copy_count * q->unit_size; | |
99 | q->fill_count += copy_count; | |
100 | if (q->fill_count == q->alloc_count) { | |
101 | ret = feed_queue_logic_flush(q); | |
102 | if (ret != SR_OK) | |
103 | return ret; | |
104 | wrptr = &q->data_bytes[0]; | |
105 | } | |
106 | } | |
107 | ||
108 | return SR_OK; | |
109 | } | |
110 | ||
47a102f9 GS |
111 | SR_API int feed_queue_logic_flush(struct feed_queue_logic *q) |
112 | { | |
113 | int ret; | |
114 | ||
115 | if (!q->fill_count) | |
116 | return SR_OK; | |
117 | ||
118 | q->logic.length = q->fill_count * q->unit_size; | |
119 | ret = sr_session_send(q->sdi, &q->packet); | |
120 | if (ret != SR_OK) | |
121 | return ret; | |
122 | q->fill_count = 0; | |
123 | ||
124 | return SR_OK; | |
125 | } | |
126 | ||
f478c3e6 GS |
127 | SR_API int feed_queue_logic_send_trigger(struct feed_queue_logic *q) |
128 | { | |
129 | int ret; | |
130 | ||
131 | ret = feed_queue_logic_flush(q); | |
132 | if (ret != SR_OK) | |
133 | return ret; | |
134 | ||
135 | ret = std_session_send_df_trigger(q->sdi); | |
136 | if (ret != SR_OK) | |
137 | return ret; | |
138 | ||
139 | return SR_OK; | |
140 | } | |
141 | ||
47a102f9 GS |
142 | SR_API void feed_queue_logic_free(struct feed_queue_logic *q) |
143 | { | |
144 | ||
145 | if (!q) | |
146 | return; | |
147 | ||
148 | g_free(q->data_bytes); | |
149 | g_free(q); | |
150 | } | |
151 | ||
152 | struct feed_queue_analog { | |
57140e5a | 153 | const struct sr_dev_inst *sdi; |
47a102f9 GS |
154 | size_t alloc_count; |
155 | size_t fill_count; | |
156 | float *data_values; | |
157 | int digits; | |
158 | struct sr_datafeed_packet packet; | |
159 | struct sr_datafeed_analog analog; | |
160 | struct sr_analog_encoding encoding; | |
161 | struct sr_analog_meaning meaning; | |
162 | struct sr_analog_spec spec; | |
163 | GSList *channels; | |
164 | }; | |
165 | ||
57140e5a GS |
166 | SR_API struct feed_queue_analog *feed_queue_analog_alloc( |
167 | const struct sr_dev_inst *sdi, | |
47a102f9 GS |
168 | size_t sample_count, int digits, struct sr_channel *ch) |
169 | { | |
170 | struct feed_queue_analog *q; | |
171 | ||
172 | q = g_malloc0(sizeof(*q)); | |
173 | q->sdi = sdi; | |
174 | q->alloc_count = sample_count; | |
175 | q->data_values = g_try_malloc(q->alloc_count * sizeof(float)); | |
176 | if (!q->data_values) { | |
177 | g_free(q); | |
178 | return NULL; | |
179 | } | |
180 | q->digits = digits; | |
181 | q->channels = g_slist_append(NULL, ch); | |
182 | ||
183 | memset(&q->packet, 0, sizeof(q->packet)); | |
184 | sr_analog_init(&q->analog, &q->encoding, &q->meaning, &q->spec, digits); | |
185 | q->packet.type = SR_DF_ANALOG; | |
186 | q->packet.payload = &q->analog; | |
187 | q->encoding.is_signed = TRUE; | |
188 | q->meaning.channels = q->channels; | |
189 | q->analog.data = q->data_values; | |
190 | ||
191 | return q; | |
192 | } | |
193 | ||
cc8b162f | 194 | SR_API int feed_queue_analog_mq_unit(struct feed_queue_analog *q, |
43e6f7a7 GS |
195 | enum sr_mq mq, enum sr_mqflag mq_flag, enum sr_unit unit) |
196 | { | |
197 | int ret; | |
198 | ||
199 | if (!q) | |
200 | return SR_ERR_ARG; | |
201 | ||
202 | ret = feed_queue_analog_flush(q); | |
203 | if (ret != SR_OK) | |
204 | return ret; | |
205 | ||
69b0005b GS |
206 | q->meaning.mq = mq; |
207 | q->meaning.mqflags = mq_flag; | |
208 | q->meaning.unit = unit; | |
43e6f7a7 GS |
209 | |
210 | return SR_OK; | |
211 | } | |
212 | ||
cc8b162f GS |
213 | SR_API int feed_queue_analog_scale_offset(struct feed_queue_analog *q, |
214 | const struct sr_rational *scale, const struct sr_rational *offset) | |
215 | { | |
216 | int ret; | |
217 | ||
218 | if (!q) | |
219 | return SR_ERR_ARG; | |
220 | ||
221 | ret = feed_queue_analog_flush(q); | |
222 | if (ret != SR_OK) | |
223 | return ret; | |
224 | ||
225 | if (scale) | |
226 | q->encoding.scale = *scale; | |
227 | if (offset) | |
228 | q->encoding.offset = *offset; | |
229 | ||
230 | return SR_OK; | |
231 | } | |
232 | ||
f40d8479 GS |
233 | SR_API int feed_queue_analog_submit_one(struct feed_queue_analog *q, |
234 | float data, size_t repeat_count) | |
47a102f9 GS |
235 | { |
236 | int ret; | |
237 | ||
f40d8479 | 238 | while (repeat_count--) { |
47a102f9 GS |
239 | q->data_values[q->fill_count++] = data; |
240 | if (q->fill_count == q->alloc_count) { | |
241 | ret = feed_queue_analog_flush(q); | |
242 | if (ret != SR_OK) | |
243 | return ret; | |
244 | } | |
245 | } | |
246 | ||
247 | return SR_OK; | |
248 | } | |
249 | ||
250 | SR_API int feed_queue_analog_flush(struct feed_queue_analog *q) | |
251 | { | |
252 | int ret; | |
253 | ||
254 | if (!q->fill_count) | |
255 | return SR_OK; | |
256 | ||
257 | q->analog.num_samples = q->fill_count; | |
258 | ret = sr_session_send(q->sdi, &q->packet); | |
259 | if (ret != SR_OK) | |
260 | return ret; | |
261 | q->fill_count = 0; | |
262 | ||
263 | return SR_OK; | |
264 | } | |
265 | ||
266 | SR_API void feed_queue_analog_free(struct feed_queue_analog *q) | |
267 | { | |
268 | ||
269 | if (!q) | |
270 | return; | |
271 | ||
272 | g_free(q->data_values); | |
273 | g_slist_free(q->channels); | |
274 | g_free(q); | |
275 | } |