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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2011 Bert Vermeulen <bert@biot.com> | |
5 | * Copyright (C) 2011 HÃ¥vard Espeland <gus@ping.uio.no> | |
6 | * | |
7 | * This program is free software: you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation, either version 3 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <stdlib.h> | |
22 | #include <stdio.h> | |
23 | #include <string.h> | |
24 | #include <glib.h> | |
25 | #include <sigrok.h> | |
26 | #include "config.h" | |
27 | #include "text.h" | |
28 | ||
29 | ||
30 | void flush_linebufs(struct context *ctx, char *outbuf) | |
31 | { | |
32 | static int max_probename_len = 0; | |
33 | int len, i; | |
34 | ||
35 | if (ctx->linebuf[0] == 0) | |
36 | return; | |
37 | ||
38 | if (max_probename_len == 0) { | |
39 | /* First time through... */ | |
40 | for (i = 0; ctx->probelist[i]; i++) { | |
41 | len = strlen(ctx->probelist[i]); | |
42 | if (len > max_probename_len) | |
43 | max_probename_len = len; | |
44 | } | |
45 | } | |
46 | ||
47 | for (i = 0; ctx->probelist[i]; i++) { | |
48 | sprintf(outbuf + strlen(outbuf), "%*s:%s\n", max_probename_len, | |
49 | ctx->probelist[i], ctx->linebuf + i * ctx->linebuf_len); | |
50 | } | |
51 | ||
52 | /* Mark trigger with a ^ character. */ | |
53 | if (ctx->mark_trigger != -1) | |
54 | { | |
55 | int space_offset = ctx->mark_trigger / 8; | |
56 | ||
57 | if (ctx->mode == MODE_ASCII) | |
58 | space_offset = 0; | |
59 | ||
60 | sprintf(outbuf + strlen(outbuf), "T:%*s^\n", | |
61 | ctx->mark_trigger + space_offset, ""); | |
62 | } | |
63 | ||
64 | memset(ctx->linebuf, 0, i * ctx->linebuf_len); | |
65 | } | |
66 | ||
67 | int init(struct sr_output *o, int default_spl, enum outputmode mode) | |
68 | { | |
69 | struct context *ctx; | |
70 | struct sr_probe *probe; | |
71 | GSList *l; | |
72 | uint64_t samplerate; | |
73 | int num_probes; | |
74 | char *samplerate_s; | |
75 | ||
76 | if (!(ctx = calloc(1, sizeof(struct context)))) | |
77 | return SR_ERR_MALLOC; | |
78 | ||
79 | o->internal = ctx; | |
80 | ctx->num_enabled_probes = 0; | |
81 | ||
82 | for (l = o->device->probes; l; l = l->next) { | |
83 | probe = l->data; | |
84 | if (!probe->enabled) | |
85 | continue; | |
86 | ctx->probelist[ctx->num_enabled_probes++] = probe->name; | |
87 | } | |
88 | ||
89 | ctx->probelist[ctx->num_enabled_probes] = 0; | |
90 | ctx->unitsize = (ctx->num_enabled_probes + 7) / 8; | |
91 | ctx->line_offset = 0; | |
92 | ctx->spl_cnt = 0; | |
93 | ctx->mark_trigger = -1; | |
94 | ctx->mode = mode; | |
95 | ||
96 | if (o->param && o->param[0]) { | |
97 | ctx->samples_per_line = strtoul(o->param, NULL, 10); | |
98 | if (ctx->samples_per_line < 1) | |
99 | return SR_ERR; | |
100 | } else | |
101 | ctx->samples_per_line = default_spl; | |
102 | ||
103 | if (!(ctx->header = malloc(512))) { | |
104 | free(ctx); | |
105 | return SR_ERR_MALLOC; | |
106 | } | |
107 | ||
108 | snprintf(ctx->header, 511, "%s\n", PACKAGE_STRING); | |
109 | num_probes = g_slist_length(o->device->probes); | |
110 | if (o->device->plugin || device_has_hwcap(o->device, SR_HWCAP_SAMPLERATE)) { | |
111 | samplerate = *((uint64_t *) o->device->plugin->get_device_info( | |
112 | o->device->plugin_index, SR_DI_CUR_SAMPLERATE)); | |
113 | if (!(samplerate_s = sr_samplerate_string(samplerate))) { | |
114 | free(ctx->header); | |
115 | free(ctx); | |
116 | return SR_ERR; | |
117 | } | |
118 | snprintf(ctx->header + strlen(ctx->header), | |
119 | 511 - strlen(ctx->header), | |
120 | "Acquisition with %d/%d probes at %s\n", | |
121 | ctx->num_enabled_probes, num_probes, samplerate_s); | |
122 | free(samplerate_s); | |
123 | } | |
124 | ||
125 | ctx->linebuf_len = ctx->samples_per_line * 2 + 4; | |
126 | if (!(ctx->linebuf = calloc(1, num_probes * ctx->linebuf_len))) { | |
127 | free(ctx->header); | |
128 | free(ctx); | |
129 | return SR_ERR_MALLOC; | |
130 | } | |
131 | if (!(ctx->linevalues = calloc(1, num_probes))) { | |
132 | free(ctx->header); | |
133 | free(ctx); | |
134 | return SR_ERR_MALLOC; | |
135 | } | |
136 | ||
137 | return SR_OK; | |
138 | } | |
139 | ||
140 | int event(struct sr_output *o, int event_type, char **data_out, | |
141 | uint64_t *length_out) | |
142 | { | |
143 | struct context *ctx; | |
144 | int outsize; | |
145 | char *outbuf; | |
146 | ||
147 | ctx = o->internal; | |
148 | switch (event_type) { | |
149 | case SR_DF_TRIGGER: | |
150 | ctx->mark_trigger = ctx->spl_cnt; | |
151 | *data_out = NULL; | |
152 | *length_out = 0; | |
153 | break; | |
154 | case SR_DF_END: | |
155 | outsize = ctx->num_enabled_probes | |
156 | * (ctx->samples_per_line + 20) + 512; | |
157 | if (!(outbuf = calloc(1, outsize))) | |
158 | return SR_ERR_MALLOC; | |
159 | flush_linebufs(ctx, outbuf); | |
160 | *data_out = outbuf; | |
161 | *length_out = strlen(outbuf); | |
162 | free(o->internal); | |
163 | o->internal = NULL; | |
164 | break; | |
165 | default: | |
166 | *data_out = NULL; | |
167 | *length_out = 0; | |
168 | break; | |
169 | } | |
170 | ||
171 | return SR_OK; | |
172 | } | |
173 |