2 * This file is part of the sigrok-cli project.
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
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.
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.
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/>.
21 #include <sys/types.h>
29 #include "sigrok-cli.h"
31 #define BUFSIZE (16 * 1024)
33 static void load_input_file_module(void)
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;
48 g_critical("No supported input formats available.");
52 if (opt_input_format) {
53 mod_args = parse_generic_arg(opt_input_format, TRUE);
54 mod_id = g_hash_table_lookup(mod_args, "sigrok_key");
58 buf = g_string_sized_new(BUFSIZE);
60 /* User specified an input module to use. */
61 if (!(imod = sr_input_find(mod_id)))
62 g_critical("Error: unknown input module '%s'.", mod_id);
63 g_hash_table_remove(mod_args, "sigrok_key");
64 if ((options = sr_input_options_get(imod))) {
65 mod_opts = generic_arg_to_opt(options, mod_args);
66 sr_output_options_free(options);
69 if (!(in = sr_input_new(imod, mod_opts)))
70 g_critical("Error: failed to initialize input module.");
72 g_hash_table_destroy(mod_opts);
74 g_hash_table_destroy(mod_args);
75 if ((fd = open(opt_input_file, O_RDONLY)) == -1)
76 g_critical("Failed to load %s: %s.", opt_input_file,
79 if (strcmp(opt_input_file, "-")) {
81 * An actual filename: let the input modules try to
84 if (sr_input_scan_file(opt_input_file, &in) == SR_OK) {
85 /* That worked, reopen the file for reading. */
86 fd = open(opt_input_file, O_RDONLY);
90 * Taking input from a pipe: let the input modules try
91 * to identify the stream content.
93 if (!strcmp(opt_input_file, "-")) {
97 if ((fd = open(opt_input_file, O_RDONLY)) == -1)
98 g_critical("Failed to load %s: %s.", opt_input_file,
101 if ((len = read(fd, buf->str, BUFSIZE)) < 1)
102 g_critical("Failed to read %s: %s.", opt_input_file,
105 sr_input_scan_buffer(buf, &in);
108 g_critical("Error: no input module found for this file.");
110 sr_session_new(sr_ctx, &session);
111 sr_session_datafeed_callback_add(session, &datafeed_in, NULL);
115 g_string_truncate(buf, 0);
116 len = read(fd, buf->str, BUFSIZE);
118 g_critical("Read failed: %s", g_strerror(errno));
120 /* End of file or stream. */
123 if (sr_input_send(in, buf) != SR_OK)
126 sdi = sr_input_dev_inst_get(in);
127 if (!got_sdi && sdi) {
128 /* First time we got a valid sdi. */
129 if (select_channels(sdi) != SR_OK)
131 if (sr_session_dev_add(session, sdi) != SR_OK) {
132 g_critical("Failed to use device.");
133 sr_session_destroy(session);
141 g_string_free(buf, TRUE);
143 sr_session_destroy(session);
147 void load_input_file(void)
149 struct sr_session *session;
150 struct sr_dev_inst *sdi;
152 GMainLoop *main_loop;
155 if (!strcmp(opt_input_file, "-")) {
156 /* Input from stdin is never a session file. */
157 load_input_file_module();
159 if ((ret = sr_session_load(sr_ctx, opt_input_file,
160 &session)) == SR_OK) {
161 /* sigrok session file */
162 ret = sr_session_dev_list(session, &devices);
163 if (ret != SR_OK || !devices || !devices->data) {
164 g_critical("Failed to access session device.");
165 g_slist_free(devices);
166 sr_session_destroy(session);
170 g_slist_free(devices);
171 if (select_channels(sdi) != SR_OK) {
172 sr_session_destroy(session);
175 main_loop = g_main_loop_new(NULL, FALSE);
177 sr_session_datafeed_callback_add(session, datafeed_in, NULL);
178 sr_session_stopped_callback_set(session,
179 (sr_session_stopped_callback)g_main_loop_quit,
181 if (sr_session_start(session) == SR_OK)
182 g_main_loop_run(main_loop);
184 g_main_loop_unref(main_loop);
185 sr_session_destroy(session);
186 } else if (ret != SR_ERR) {
187 /* It's a session file, but it didn't work out somehow. */
188 g_critical("Failed to load session file.");
190 /* Fall back on input modules. */
191 load_input_file_module();