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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 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 <sigrok.h> | |
27 | ||
28 | #define CHUNKSIZE 4096 | |
29 | #define DEFAULT_NUM_PROBES 8 | |
30 | ||
31 | static int format_match(const char *filename) | |
32 | { | |
33 | /* suppress compiler warning */ | |
34 | (void)filename; | |
35 | ||
36 | /* this module will handle anything you throw at it */ | |
37 | return TRUE; | |
38 | } | |
39 | ||
40 | static int init(struct sr_input *in) | |
41 | { | |
42 | int num_probes, i; | |
43 | char name[SR_MAX_PROBENAME_LEN + 1]; | |
44 | ||
45 | if (in->param && in->param[0]) { | |
46 | num_probes = strtoul(in->param, NULL, 10); | |
47 | if (num_probes < 1) | |
48 | return SR_ERR; | |
49 | } else { | |
50 | num_probes = DEFAULT_NUM_PROBES; | |
51 | } | |
52 | ||
53 | /* Create a virtual device. */ | |
54 | in->vdevice = sr_device_new(NULL, 0); | |
55 | ||
56 | for (i = 0; i < num_probes; i++) { | |
57 | snprintf(name, SR_MAX_PROBENAME_LEN, "%d", i); | |
58 | /* TODO: Check return value. */ | |
59 | sr_device_probe_add(in->vdevice, name); | |
60 | } | |
61 | ||
62 | return SR_OK; | |
63 | } | |
64 | ||
65 | static int loadfile(struct sr_input *in, const char *filename) | |
66 | { | |
67 | struct sr_datafeed_header header; | |
68 | struct sr_datafeed_packet packet; | |
69 | struct sr_datafeed_logic logic; | |
70 | unsigned char buffer[CHUNKSIZE]; | |
71 | int fd, size, num_probes; | |
72 | ||
73 | if ((fd = open(filename, O_RDONLY)) == -1) | |
74 | return SR_ERR; | |
75 | ||
76 | num_probes = g_slist_length(in->vdevice->probes); | |
77 | ||
78 | /* send header */ | |
79 | header.feed_version = 1; | |
80 | header.num_logic_probes = num_probes; | |
81 | header.num_analog_probes = 0; | |
82 | header.samplerate = 0; | |
83 | gettimeofday(&header.starttime, NULL); | |
84 | packet.type = SR_DF_HEADER; | |
85 | packet.payload = &header; | |
86 | sr_session_bus(in->vdevice, &packet); | |
87 | ||
88 | /* chop up the input file into chunks and feed it into the session bus */ | |
89 | packet.type = SR_DF_LOGIC; | |
90 | packet.payload = &logic; | |
91 | logic.unitsize = (num_probes + 7) / 8; | |
92 | logic.data = buffer; | |
93 | while ((size = read(fd, buffer, CHUNKSIZE)) > 0) { | |
94 | logic.length = size; | |
95 | sr_session_bus(in->vdevice, &packet); | |
96 | } | |
97 | close(fd); | |
98 | ||
99 | /* end of stream */ | |
100 | packet.type = SR_DF_END; | |
101 | sr_session_bus(in->vdevice, &packet); | |
102 | ||
103 | return SR_OK; | |
104 | } | |
105 | ||
106 | struct sr_input_format input_binary = { | |
107 | .id = "binary", | |
108 | .description = "Raw binary", | |
109 | .format_match = format_match, | |
110 | .init = init, | |
111 | .loadfile = loadfile, | |
112 | }; |