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2be182e6 BV |
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 | ||
d486cbdd | 20 | #include <config.h> |
a8b4041a | 21 | #include <sys/types.h> |
8d52f788 | 22 | #include <sys/stat.h> |
a8b4041a BV |
23 | #include <fcntl.h> |
24 | #include <unistd.h> | |
8d52f788 DH |
25 | #include <errno.h> |
26 | #include <stdlib.h> | |
27 | #include <string.h> | |
2be182e6 | 28 | #include <glib.h> |
662a1e27 | 29 | #include "sigrok-cli.h" |
2be182e6 | 30 | |
7ac79fb6 | 31 | #define CHUNK_SIZE (4 * 1024 * 1024) |
2be182e6 | 32 | |
1c950633 | 33 | static void load_input_file_module(struct df_arg_desc *df_arg) |
2be182e6 | 34 | { |
4bf77ec6 | 35 | struct sr_session *session; |
a8b4041a BV |
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; | |
64f9f5b2 BV |
42 | gboolean got_sdi; |
43 | int fd; | |
a8b4041a BV |
44 | ssize_t len; |
45 | char *mod_id; | |
a30c837a | 46 | gboolean is_stdin; |
2b29fb39 | 47 | gboolean push_scan_data; |
2be182e6 | 48 | |
a8b4041a BV |
49 | if (!sr_input_list()) |
50 | g_critical("No supported input formats available."); | |
2be182e6 | 51 | |
a8b4041a BV |
52 | mod_id = NULL; |
53 | mod_args = NULL; | |
54 | if (opt_input_format) { | |
cad0cba6 | 55 | mod_args = parse_generic_arg(opt_input_format, TRUE, NULL); |
a8b4041a | 56 | mod_id = g_hash_table_lookup(mod_args, "sigrok_key"); |
2be182e6 BV |
57 | } |
58 | ||
a30c837a | 59 | is_stdin = strcmp(opt_input_file, "-") == 0; |
2b29fb39 | 60 | push_scan_data = FALSE; |
64f9f5b2 | 61 | fd = 0; |
7ac79fb6 | 62 | buf = g_string_sized_new(CHUNK_SIZE); |
a8b4041a BV |
63 | if (mod_id) { |
64 | /* User specified an input module to use. */ | |
65 | if (!(imod = sr_input_find(mod_id))) | |
66 | g_critical("Error: unknown input module '%s'.", mod_id); | |
67 | g_hash_table_remove(mod_args, "sigrok_key"); | |
68 | if ((options = sr_input_options_get(imod))) { | |
69 | mod_opts = generic_arg_to_opt(options, mod_args); | |
cfad6a30 | 70 | (void)warn_unknown_keys(options, mod_args, NULL); |
f3e44829 | 71 | sr_input_options_free(options); |
cfad6a30 | 72 | } else { |
a8b4041a | 73 | mod_opts = NULL; |
cfad6a30 | 74 | } |
a8b4041a BV |
75 | if (!(in = sr_input_new(imod, mod_opts))) |
76 | g_critical("Error: failed to initialize input module."); | |
77 | if (mod_opts) | |
78 | g_hash_table_destroy(mod_opts); | |
79 | if (mod_args) | |
80 | g_hash_table_destroy(mod_args); | |
a30c837a | 81 | if (!is_stdin && (fd = open(opt_input_file, O_RDONLY)) < 0) |
a8b4041a | 82 | g_critical("Failed to load %s: %s.", opt_input_file, |
19bdd3dd | 83 | g_strerror(errno)); |
a8b4041a | 84 | } else { |
a30c837a | 85 | if (!is_stdin) { |
47f97410 BV |
86 | /* |
87 | * An actual filename: let the input modules try to | |
88 | * identify the file. | |
89 | */ | |
b66260b9 BV |
90 | if (sr_input_scan_file(opt_input_file, &in) == SR_OK) { |
91 | /* That worked, reopen the file for reading. */ | |
92 | fd = open(opt_input_file, O_RDONLY); | |
93 | } | |
47f97410 BV |
94 | } else { |
95 | /* | |
96 | * Taking input from a pipe: let the input modules try | |
97 | * to identify the stream content. | |
98 | */ | |
a30c837a | 99 | if (is_stdin) { |
47f97410 BV |
100 | /* stdin */ |
101 | fd = 0; | |
102 | } else { | |
a30c837a GS |
103 | fd = open(opt_input_file, O_RDONLY); |
104 | if (fd == -1) | |
47f97410 | 105 | g_critical("Failed to load %s: %s.", opt_input_file, |
19bdd3dd | 106 | g_strerror(errno)); |
47f97410 | 107 | } |
f3e44829 | 108 | if ((len = read(fd, buf->str, buf->allocated_len)) < 1) |
47f97410 | 109 | g_critical("Failed to read %s: %s.", opt_input_file, |
19bdd3dd | 110 | g_strerror(errno)); |
47f97410 | 111 | buf->len = len; |
b66260b9 | 112 | sr_input_scan_buffer(buf, &in); |
2b29fb39 | 113 | push_scan_data = TRUE; |
47f97410 BV |
114 | } |
115 | if (!in) | |
a8b4041a | 116 | g_critical("Error: no input module found for this file."); |
2be182e6 | 117 | } |
3d24ca2d | 118 | sr_session_new(sr_ctx, &session); |
1c950633 GS |
119 | df_arg->session = session; |
120 | sr_session_datafeed_callback_add(session, datafeed_in, df_arg); | |
2be182e6 | 121 | |
2b29fb39 GS |
122 | /* |
123 | * Implementation detail: The combination of reading from stdin | |
124 | * and automatic file format detection may have pushed the first | |
125 | * chunk of input data into the input module's data accumulator, | |
126 | * _bypassing_ the .receive() callback. It is essential to call | |
127 | * .receive() before calling .end() for files of size smaller than | |
128 | * CHUNK_SIZE (which is a typical case). So that sdi becomes ready. | |
129 | * Fortunately all input modules accept .receive() calls with | |
130 | * a zero length, and inspect whatever was accumulated so far. | |
131 | * | |
132 | * After that optional initial push of data which was queued | |
133 | * above during format detection, continue reading remaining | |
134 | * chunks from the input file until EOF is seen. | |
135 | */ | |
64f9f5b2 | 136 | got_sdi = FALSE; |
f0f54487 | 137 | while (TRUE) { |
a8b4041a | 138 | g_string_truncate(buf, 0); |
2b29fb39 GS |
139 | if (push_scan_data) |
140 | len = 0; | |
141 | else | |
f3e44829 | 142 | len = read(fd, buf->str, buf->allocated_len); |
a8b4041a | 143 | if (len < 0) |
19bdd3dd | 144 | g_critical("Read failed: %s", g_strerror(errno)); |
2b29fb39 | 145 | if (len == 0 && !push_scan_data) |
64f9f5b2 BV |
146 | /* End of file or stream. */ |
147 | break; | |
2b29fb39 | 148 | push_scan_data = FALSE; |
a8b4041a | 149 | buf->len = len; |
a9b64d89 GS |
150 | if (sr_input_send(in, buf) != SR_OK) { |
151 | g_critical("File import failed (read)"); | |
a8b4041a | 152 | break; |
a9b64d89 | 153 | } |
64f9f5b2 BV |
154 | |
155 | sdi = sr_input_dev_inst_get(in); | |
f0f54487 | 156 | if (!got_sdi && sdi) { |
64f9f5b2 | 157 | /* First time we got a valid sdi. */ |
a9b64d89 GS |
158 | if (select_channels(sdi) != SR_OK) { |
159 | g_critical("File import failed (channels)"); | |
64f9f5b2 | 160 | return; |
a9b64d89 | 161 | } |
64f9f5b2 BV |
162 | if (sr_session_dev_add(session, sdi) != SR_OK) { |
163 | g_critical("Failed to use device."); | |
164 | sr_session_destroy(session); | |
165 | return; | |
166 | } | |
167 | got_sdi = TRUE; | |
168 | } | |
a8b4041a | 169 | } |
67a00747 | 170 | sr_input_end(in); |
a8b4041a BV |
171 | sr_input_free(in); |
172 | g_string_free(buf, TRUE); | |
f3e44829 | 173 | close(fd); |
2be182e6 | 174 | |
1c950633 | 175 | df_arg->session = NULL; |
4bf77ec6 | 176 | sr_session_destroy(session); |
2be182e6 BV |
177 | } |
178 | ||
1c950633 | 179 | void load_input_file(gboolean do_props) |
2be182e6 | 180 | { |
1c950633 | 181 | struct df_arg_desc df_arg; |
4bf77ec6 | 182 | struct sr_session *session; |
e1ec80fa | 183 | struct sr_dev_inst *sdi; |
a8b4041a | 184 | GSList *devices; |
1ef118ab | 185 | GMainLoop *main_loop; |
e1ec80fa | 186 | int ret; |
2be182e6 | 187 | |
1c950633 GS |
188 | memset(&df_arg, 0, sizeof(df_arg)); |
189 | df_arg.do_props = do_props; | |
190 | ||
f5531096 BV |
191 | if (!strcmp(opt_input_file, "-")) { |
192 | /* Input from stdin is never a session file. */ | |
1c950633 | 193 | load_input_file_module(&df_arg); |
f5531096 | 194 | } else { |
3d24ca2d ML |
195 | if ((ret = sr_session_load(sr_ctx, opt_input_file, |
196 | &session)) == SR_OK) { | |
f5531096 BV |
197 | /* sigrok session file */ |
198 | ret = sr_session_dev_list(session, &devices); | |
199 | if (ret != SR_OK || !devices || !devices->data) { | |
200 | g_critical("Failed to access session device."); | |
1ef118ab | 201 | g_slist_free(devices); |
f5531096 BV |
202 | sr_session_destroy(session); |
203 | return; | |
204 | } | |
205 | sdi = devices->data; | |
1ef118ab | 206 | g_slist_free(devices); |
f5531096 BV |
207 | if (select_channels(sdi) != SR_OK) { |
208 | sr_session_destroy(session); | |
209 | return; | |
210 | } | |
1ef118ab DE |
211 | main_loop = g_main_loop_new(NULL, FALSE); |
212 | ||
1c950633 GS |
213 | df_arg.session = session; |
214 | sr_session_datafeed_callback_add(session, | |
215 | datafeed_in, &df_arg); | |
1ef118ab DE |
216 | sr_session_stopped_callback_set(session, |
217 | (sr_session_stopped_callback)g_main_loop_quit, | |
218 | main_loop); | |
219 | if (sr_session_start(session) == SR_OK) | |
220 | g_main_loop_run(main_loop); | |
221 | ||
222 | g_main_loop_unref(main_loop); | |
1c950633 | 223 | df_arg.session = NULL; |
1ef118ab | 224 | sr_session_destroy(session); |
f5531096 BV |
225 | } else if (ret != SR_ERR) { |
226 | /* It's a session file, but it didn't work out somehow. */ | |
227 | g_critical("Failed to load session file."); | |
228 | } else { | |
229 | /* Fall back on input modules. */ | |
1c950633 | 230 | load_input_file_module(&df_arg); |
f5531096 | 231 | } |
2be182e6 BV |
232 | } |
233 | } |