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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * Copyright (C) 2011 Bert Vermeulen <bert@biot.com> | |
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 2 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, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | /* | |
23 | * This implements version 1.3 of the output format for the OpenBench Logic | |
24 | * Sniffer "Alternative" Java client. Details: | |
25 | * https://github.com/jawi/ols/wiki/OLS-data-file-format | |
26 | */ | |
27 | ||
28 | #include <stdlib.h> | |
29 | #include <string.h> | |
30 | #include <glib.h> | |
31 | #include <sigrok.h> | |
32 | #include "config.h" | |
33 | ||
34 | struct context { | |
35 | GString *header; | |
36 | uint64_t num_samples; | |
37 | unsigned int unitsize; | |
38 | }; | |
39 | ||
40 | static int init(struct sr_output *o) | |
41 | { | |
42 | struct context *ctx; | |
43 | struct sr_probe *probe; | |
44 | GSList *l; | |
45 | uint64_t samplerate; | |
46 | int num_enabled_probes; | |
47 | ||
48 | if (!(ctx = g_malloc(sizeof(struct context)))) | |
49 | return SR_ERR_MALLOC; | |
50 | o->internal = ctx; | |
51 | ||
52 | ctx->num_samples = 0; | |
53 | num_enabled_probes = 0; | |
54 | for (l = o->device->probes; l; l = l->next) { | |
55 | probe = l->data; | |
56 | if (probe->enabled) | |
57 | num_enabled_probes++; | |
58 | } | |
59 | ctx->unitsize = (num_enabled_probes + 7) / 8; | |
60 | ||
61 | if (o->device->plugin && sr_device_has_hwcap(o->device, SR_HWCAP_SAMPLERATE)) | |
62 | samplerate = *((uint64_t *) o->device->plugin->get_device_info( | |
63 | o->device->plugin_index, SR_DI_CUR_SAMPLERATE)); | |
64 | else | |
65 | samplerate = 0; | |
66 | ||
67 | ctx->header = g_string_sized_new(512); | |
68 | g_string_append_printf(ctx->header, ";Rate: %"PRIu64"\n", samplerate); | |
69 | g_string_append_printf(ctx->header, ";Channels: %d\n", num_enabled_probes); | |
70 | g_string_append_printf(ctx->header, ";EnabledChannels: -1\n"); | |
71 | g_string_append_printf(ctx->header, ";Compressed: true\n"); | |
72 | g_string_append_printf(ctx->header, ";CursorEnabled: false\n"); | |
73 | ||
74 | return SR_OK; | |
75 | } | |
76 | ||
77 | static int event(struct sr_output *o, int event_type, char **data_out, | |
78 | uint64_t *length_out) | |
79 | { | |
80 | struct context *ctx; | |
81 | ||
82 | ctx = o->internal; | |
83 | ||
84 | if (ctx && event_type == SR_DF_END) { | |
85 | if (ctx->header) | |
86 | g_string_free(ctx->header, TRUE); | |
87 | free(o->internal); | |
88 | o->internal = NULL; | |
89 | } | |
90 | ||
91 | *data_out = NULL; | |
92 | *length_out = 0; | |
93 | ||
94 | return SR_OK; | |
95 | } | |
96 | ||
97 | static int data(struct sr_output *o, const char *data_in, uint64_t length_in, | |
98 | char **data_out, uint64_t *length_out) | |
99 | { | |
100 | GString *out; | |
101 | struct context *ctx; | |
102 | uint64_t sample; | |
103 | unsigned int i; | |
104 | ||
105 | ctx = o->internal; | |
106 | if (ctx->header) { | |
107 | /* first data packet */ | |
108 | out = ctx->header; | |
109 | ctx->header = NULL; | |
110 | } else | |
111 | out = g_string_sized_new(512); | |
112 | ||
113 | for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) { | |
114 | sample = 0; | |
115 | memcpy(&sample, data_in + i, ctx->unitsize); | |
116 | g_string_append_printf(out, "%08x@%"PRIu64"\n", | |
117 | (uint32_t) sample, ctx->num_samples++); | |
118 | } | |
119 | *data_out = out->str; | |
120 | *length_out = out->len; | |
121 | g_string_free(out, FALSE); | |
122 | ||
123 | return SR_OK; | |
124 | } | |
125 | ||
126 | struct sr_output_format output_ols = { | |
127 | .extension = "ols", | |
128 | .description = "OpenBench Logic Sniffer", | |
129 | .df_type = SR_DF_LOGIC, | |
130 | .init = init, | |
131 | .data = data, | |
132 | .event = event, | |
133 | }; |