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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 | ||
32 | static int format_match(const char *filename) | |
33 | { | |
34 | /* suppress compiler warning */ | |
35 | (void)filename; | |
36 | ||
37 | /* this module will handle anything you throw at it */ | |
38 | return TRUE; | |
39 | } | |
40 | ||
41 | static int init(struct sr_input *in) | |
42 | { | |
43 | int num_probes; | |
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 | /* create a virtual device */ | |
53 | in->vdevice = sr_device_new(NULL, 0, num_probes); | |
54 | ||
55 | return SR_OK; | |
56 | } | |
57 | ||
58 | static int loadfile(struct sr_input *in, const char *filename) | |
59 | { | |
60 | struct sr_datafeed_header header; | |
61 | struct sr_datafeed_packet packet; | |
62 | struct sr_datafeed_logic logic; | |
63 | unsigned char buffer[CHUNKSIZE]; | |
64 | int fd, size, num_probes; | |
65 | ||
66 | if ((fd = open(filename, O_RDONLY)) == -1) | |
67 | return SR_ERR; | |
68 | ||
69 | num_probes = g_slist_length(in->vdevice->probes); | |
70 | ||
71 | /* send header */ | |
72 | header.feed_version = 1; | |
73 | header.num_logic_probes = num_probes; | |
74 | header.num_analog_probes = 0; | |
75 | header.samplerate = 0; | |
76 | gettimeofday(&header.starttime, NULL); | |
77 | packet.type = SR_DF_HEADER; | |
78 | packet.payload = &header; | |
79 | sr_session_bus(in->vdevice, &packet); | |
80 | ||
81 | /* chop up the input file into chunks and feed it into the session bus */ | |
82 | packet.type = SR_DF_LOGIC; | |
83 | packet.payload = &logic; | |
84 | logic.unitsize = (num_probes + 7) / 8; | |
85 | logic.data = buffer; | |
86 | while ((size = read(fd, buffer, CHUNKSIZE)) > 0) { | |
87 | logic.length = size; | |
88 | sr_session_bus(in->vdevice, &packet); | |
89 | } | |
90 | close(fd); | |
91 | ||
92 | /* end of stream */ | |
93 | packet.type = SR_DF_END; | |
94 | sr_session_bus(in->vdevice, &packet); | |
95 | ||
96 | return SR_OK; | |
97 | } | |
98 | ||
99 | struct sr_input_format input_binary = { | |
100 | .id = "binary", | |
101 | .description = "Raw binary", | |
102 | .format_match = format_match, | |
103 | .init = init, | |
104 | .loadfile = loadfile, | |
105 | }; |