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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010-2012 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 <stdlib.h> | |
21 | #include <sys/types.h> | |
22 | #include <sys/stat.h> | |
23 | #include <fcntl.h> | |
24 | #include <unistd.h> | |
25 | #include <sys/time.h> | |
26 | #include "libsigrok.h" | |
27 | #include "libsigrok-internal.h" | |
28 | ||
29 | #define CHUNKSIZE (512 * 1024) | |
30 | #define DEFAULT_NUM_PROBES 8 | |
31 | ||
32 | struct context { | |
33 | uint64_t samplerate; | |
34 | }; | |
35 | ||
36 | static int format_match(const char *filename) | |
37 | { | |
38 | /* suppress compiler warning */ | |
39 | (void)filename; | |
40 | ||
41 | /* this module will handle anything you throw at it */ | |
42 | return TRUE; | |
43 | } | |
44 | ||
45 | static int init(struct sr_input *in) | |
46 | { | |
47 | struct sr_probe *probe; | |
48 | int num_probes, i; | |
49 | char name[SR_MAX_PROBENAME_LEN + 1]; | |
50 | char *param; | |
51 | struct context *ctx; | |
52 | ||
53 | if (!(ctx = g_try_malloc0(sizeof(*ctx)))) { | |
54 | sr_err("binary in: %s: ctx malloc failed", __func__); | |
55 | return SR_ERR_MALLOC; | |
56 | } | |
57 | ||
58 | num_probes = DEFAULT_NUM_PROBES; | |
59 | ctx->samplerate = 0; | |
60 | ||
61 | if(in->param) { | |
62 | param = g_hash_table_lookup(in->param, "numprobes"); | |
63 | if (param) { | |
64 | num_probes = strtoul(param, NULL, 10); | |
65 | if (num_probes < 1) | |
66 | return SR_ERR; | |
67 | } | |
68 | ||
69 | param = g_hash_table_lookup(in->param, "samplerate"); | |
70 | if (param) { | |
71 | if (sr_parse_sizestring(param, &ctx->samplerate) != SR_OK) | |
72 | return SR_ERR; | |
73 | } | |
74 | } | |
75 | ||
76 | /* Create a virtual device. */ | |
77 | in->sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, NULL, NULL, NULL); | |
78 | in->internal = ctx; | |
79 | ||
80 | for (i = 0; i < num_probes; i++) { | |
81 | snprintf(name, SR_MAX_PROBENAME_LEN, "%d", i); | |
82 | /* TODO: Check return value. */ | |
83 | if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, name))) | |
84 | return SR_ERR; | |
85 | in->sdi->probes = g_slist_append(in->sdi->probes, probe); | |
86 | } | |
87 | ||
88 | return SR_OK; | |
89 | } | |
90 | ||
91 | static int loadfile(struct sr_input *in, const char *filename) | |
92 | { | |
93 | struct sr_datafeed_header header; | |
94 | struct sr_datafeed_packet packet; | |
95 | struct sr_datafeed_meta_logic meta; | |
96 | struct sr_datafeed_logic logic; | |
97 | unsigned char buffer[CHUNKSIZE]; | |
98 | int fd, size, num_probes; | |
99 | struct context *ctx; | |
100 | ||
101 | ctx = in->internal; | |
102 | ||
103 | if ((fd = open(filename, O_RDONLY)) == -1) | |
104 | return SR_ERR; | |
105 | ||
106 | num_probes = g_slist_length(in->sdi->probes); | |
107 | ||
108 | /* send header */ | |
109 | header.feed_version = 1; | |
110 | gettimeofday(&header.starttime, NULL); | |
111 | packet.type = SR_DF_HEADER; | |
112 | packet.payload = &header; | |
113 | sr_session_send(in->sdi, &packet); | |
114 | ||
115 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
116 | packet.type = SR_DF_META_LOGIC; | |
117 | packet.payload = &meta; | |
118 | meta.samplerate = ctx->samplerate; | |
119 | meta.num_probes = num_probes; | |
120 | sr_session_send(in->sdi, &packet); | |
121 | ||
122 | /* chop up the input file into chunks and feed it into the session bus */ | |
123 | packet.type = SR_DF_LOGIC; | |
124 | packet.payload = &logic; | |
125 | logic.unitsize = (num_probes + 7) / 8; | |
126 | logic.data = buffer; | |
127 | while ((size = read(fd, buffer, CHUNKSIZE)) > 0) { | |
128 | logic.length = size; | |
129 | sr_session_send(in->sdi, &packet); | |
130 | } | |
131 | close(fd); | |
132 | ||
133 | /* end of stream */ | |
134 | packet.type = SR_DF_END; | |
135 | sr_session_send(in->sdi, &packet); | |
136 | ||
137 | g_free(ctx); | |
138 | in->internal = NULL; | |
139 | ||
140 | return SR_OK; | |
141 | } | |
142 | ||
143 | SR_PRIV struct sr_input_format input_binary = { | |
144 | .id = "binary", | |
145 | .description = "Raw binary", | |
146 | .format_match = format_match, | |
147 | .init = init, | |
148 | .loadfile = loadfile, | |
149 | }; |