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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) 2010-2012 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 "sigrok-internal.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_try_malloc(sizeof(struct context)))) { | |
49 | sr_err("ols out: %s: ctx malloc failed", __func__); | |
50 | return SR_ERR_MALLOC; | |
51 | } | |
52 | o->internal = ctx; | |
53 | ||
54 | ctx->num_samples = 0; | |
55 | num_enabled_probes = 0; | |
56 | for (l = o->dev->probes; l; l = l->next) { | |
57 | probe = l->data; | |
58 | if (probe->enabled) | |
59 | num_enabled_probes++; | |
60 | } | |
61 | ctx->unitsize = (num_enabled_probes + 7) / 8; | |
62 | ||
63 | if (o->dev->driver && sr_dev_has_hwcap(o->dev, SR_HWCAP_SAMPLERATE)) | |
64 | samplerate = *((uint64_t *) o->dev->driver->dev_info_get( | |
65 | o->dev->driver_index, SR_DI_CUR_SAMPLERATE)); | |
66 | else | |
67 | samplerate = 0; | |
68 | ||
69 | ctx->header = g_string_sized_new(512); | |
70 | g_string_append_printf(ctx->header, ";Rate: %"PRIu64"\n", samplerate); | |
71 | g_string_append_printf(ctx->header, ";Channels: %d\n", num_enabled_probes); | |
72 | g_string_append_printf(ctx->header, ";EnabledChannels: -1\n"); | |
73 | g_string_append_printf(ctx->header, ";Compressed: true\n"); | |
74 | g_string_append_printf(ctx->header, ";CursorEnabled: false\n"); | |
75 | ||
76 | return SR_OK; | |
77 | } | |
78 | ||
79 | static int event(struct sr_output *o, int event_type, char **data_out, | |
80 | uint64_t *length_out) | |
81 | { | |
82 | struct context *ctx; | |
83 | ||
84 | ctx = o->internal; | |
85 | ||
86 | if (ctx && event_type == SR_DF_END) { | |
87 | g_string_free(ctx->header, TRUE); | |
88 | g_free(o->internal); | |
89 | o->internal = NULL; | |
90 | } | |
91 | ||
92 | *data_out = NULL; | |
93 | *length_out = 0; | |
94 | ||
95 | return SR_OK; | |
96 | } | |
97 | ||
98 | static int data(struct sr_output *o, const char *data_in, uint64_t length_in, | |
99 | char **data_out, uint64_t *length_out) | |
100 | { | |
101 | GString *out; | |
102 | struct context *ctx; | |
103 | uint64_t sample; | |
104 | unsigned int i; | |
105 | ||
106 | ctx = o->internal; | |
107 | if (ctx->header) { | |
108 | /* first data packet */ | |
109 | out = ctx->header; | |
110 | ctx->header = NULL; | |
111 | } else | |
112 | out = g_string_sized_new(512); | |
113 | ||
114 | for (i = 0; i <= length_in - ctx->unitsize; i += ctx->unitsize) { | |
115 | sample = 0; | |
116 | memcpy(&sample, data_in + i, ctx->unitsize); | |
117 | g_string_append_printf(out, "%08x@%"PRIu64"\n", | |
118 | (uint32_t) sample, ctx->num_samples++); | |
119 | } | |
120 | *data_out = out->str; | |
121 | *length_out = out->len; | |
122 | g_string_free(out, FALSE); | |
123 | ||
124 | return SR_OK; | |
125 | } | |
126 | ||
127 | SR_PRIV struct sr_output_format output_ols = { | |
128 | .id = "ols", | |
129 | .description = "OpenBench Logic Sniffer", | |
130 | .df_type = SR_DF_LOGIC, | |
131 | .init = init, | |
132 | .data = data, | |
133 | .event = event, | |
134 | }; |