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1 | /* | |
2 | * This file is part of the sigrok-cli project. | |
3 | * | |
4 | * Copyright (C) 2013 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 "sigrok-cli.h" | |
21 | #include "config.h" | |
22 | #include <sys/types.h> | |
23 | #include <sys/stat.h> | |
24 | #include <fcntl.h> | |
25 | #include <unistd.h> | |
26 | #include <errno.h> | |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
29 | #include <glib.h> | |
30 | ||
31 | #define BUFSIZE 16384 | |
32 | ||
33 | static void load_input_file_module(void) | |
34 | { | |
35 | struct sr_session *session; | |
36 | const struct sr_input *in; | |
37 | const struct sr_input_module *imod; | |
38 | const struct sr_option **options; | |
39 | struct sr_dev_inst *sdi; | |
40 | GHashTable *mod_args, *mod_opts; | |
41 | GString *buf; | |
42 | int fd; | |
43 | ssize_t len; | |
44 | char *mod_id; | |
45 | ||
46 | if (!sr_input_list()) | |
47 | g_critical("No supported input formats available."); | |
48 | ||
49 | mod_id = NULL; | |
50 | mod_args = NULL; | |
51 | if (opt_input_format) { | |
52 | mod_args = parse_generic_arg(opt_input_format, TRUE); | |
53 | mod_id = g_hash_table_lookup(mod_args, "sigrok_key"); | |
54 | } | |
55 | ||
56 | buf = g_string_sized_new(BUFSIZE); | |
57 | if (mod_id) { | |
58 | /* User specified an input module to use. */ | |
59 | if (!(imod = sr_input_find(mod_id))) | |
60 | g_critical("Error: unknown input module '%s'.", mod_id); | |
61 | g_hash_table_remove(mod_args, "sigrok_key"); | |
62 | if ((options = sr_input_options_get(imod))) { | |
63 | mod_opts = generic_arg_to_opt(options, mod_args); | |
64 | sr_output_options_free(options); | |
65 | } else | |
66 | mod_opts = NULL; | |
67 | if (!(in = sr_input_new(imod, mod_opts))) | |
68 | g_critical("Error: failed to initialize input module."); | |
69 | if (mod_opts) | |
70 | g_hash_table_destroy(mod_opts); | |
71 | if (mod_args) | |
72 | g_hash_table_destroy(mod_args); | |
73 | if ((fd = open(opt_input_file, O_RDONLY)) == -1) | |
74 | g_critical("Failed to load %s: %s.", opt_input_file, | |
75 | strerror(errno)); | |
76 | } else { | |
77 | if (strcmp(opt_input_file, "-")) { | |
78 | /* | |
79 | * An actual filename: let the input modules try to | |
80 | * identify the file. | |
81 | */ | |
82 | if (sr_input_scan_file(opt_input_file, &in) == SR_OK) { | |
83 | /* That worked, reopen the file for reading. */ | |
84 | fd = open(opt_input_file, O_RDONLY); | |
85 | } | |
86 | } else { | |
87 | /* | |
88 | * Taking input from a pipe: let the input modules try | |
89 | * to identify the stream content. | |
90 | */ | |
91 | if (!strcmp(opt_input_file, "-")) { | |
92 | /* stdin */ | |
93 | fd = 0; | |
94 | } else { | |
95 | if ((fd = open(opt_input_file, O_RDONLY)) == -1) | |
96 | g_critical("Failed to load %s: %s.", opt_input_file, | |
97 | strerror(errno)); | |
98 | } | |
99 | if ((len = read(fd, buf->str, BUFSIZE)) < 1) | |
100 | g_critical("Failed to read %s: %s.", opt_input_file, | |
101 | strerror(errno)); | |
102 | buf->len = len; | |
103 | sr_input_scan_buffer(buf, &in); | |
104 | } | |
105 | if (!in) | |
106 | g_critical("Error: no input module found for this file."); | |
107 | } | |
108 | sdi = sr_input_dev_inst_get(in); | |
109 | ||
110 | if (select_channels(sdi) != SR_OK) | |
111 | return; | |
112 | ||
113 | sr_session_new(&session); | |
114 | sr_session_datafeed_callback_add(session, &datafeed_in, NULL); | |
115 | if (sr_session_dev_add(session, sdi) != SR_OK) { | |
116 | g_critical("Failed to use device."); | |
117 | sr_session_destroy(session); | |
118 | return; | |
119 | } | |
120 | ||
121 | while(TRUE) { | |
122 | g_string_truncate(buf, 0); | |
123 | len = read(fd, buf->str, BUFSIZE); | |
124 | if (len < 0) | |
125 | g_critical("Read failed: %s", strerror(errno)); | |
126 | buf->len = len; | |
127 | if (sr_input_send(in, buf) != SR_OK) | |
128 | break; | |
129 | if (len < BUFSIZE) | |
130 | break; | |
131 | } | |
132 | sr_input_free(in); | |
133 | g_string_free(buf, TRUE); | |
134 | ||
135 | sr_session_destroy(session); | |
136 | ||
137 | } | |
138 | ||
139 | void load_input_file(void) | |
140 | { | |
141 | struct sr_session *session; | |
142 | struct sr_dev_inst *sdi; | |
143 | GSList *devices; | |
144 | int ret; | |
145 | ||
146 | if (strcmp(opt_input_file, "-") || sr_session_load(opt_input_file, &session) == SR_OK) { | |
147 | /* sigrok session file */ | |
148 | ret = sr_session_dev_list(session, &devices); | |
149 | if (ret != SR_OK || !devices->data) { | |
150 | g_critical("Failed to access session device."); | |
151 | sr_session_destroy(session); | |
152 | return; | |
153 | } | |
154 | sdi = devices->data; | |
155 | if (select_channels(sdi) != SR_OK) { | |
156 | sr_session_destroy(session); | |
157 | return; | |
158 | } | |
159 | sr_session_datafeed_callback_add(session, datafeed_in, NULL); | |
160 | sr_session_start(session); | |
161 | sr_session_run(session); | |
162 | sr_session_stop(session); | |
163 | } | |
164 | else { | |
165 | /* fall back on input modules */ | |
166 | load_input_file_module(); | |
167 | } | |
168 | } |