| /* |
| * This file is part of the sigrok-cli project. |
| * |
| * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> |
| * |
| * This program is free software: you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation, either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include <config.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <glib.h> |
| #include "sigrok-cli.h" |
| |
| #define BUFSIZE (16 * 1024) |
| |
| static void load_input_file_module(void) |
| { |
| struct sr_session *session; |
| const struct sr_input *in; |
| const struct sr_input_module *imod; |
| const struct sr_option **options; |
| struct sr_dev_inst *sdi; |
| GHashTable *mod_args, *mod_opts; |
| GString *buf; |
| gboolean got_sdi; |
| int fd; |
| ssize_t len; |
| char *mod_id; |
| |
| if (!sr_input_list()) |
| g_critical("No supported input formats available."); |
| |
| mod_id = NULL; |
| mod_args = NULL; |
| if (opt_input_format) { |
| mod_args = parse_generic_arg(opt_input_format, TRUE); |
| mod_id = g_hash_table_lookup(mod_args, "sigrok_key"); |
| } |
| |
| fd = 0; |
| buf = g_string_sized_new(BUFSIZE); |
| if (mod_id) { |
| /* User specified an input module to use. */ |
| if (!(imod = sr_input_find(mod_id))) |
| g_critical("Error: unknown input module '%s'.", mod_id); |
| g_hash_table_remove(mod_args, "sigrok_key"); |
| if ((options = sr_input_options_get(imod))) { |
| mod_opts = generic_arg_to_opt(options, mod_args); |
| sr_output_options_free(options); |
| } else |
| mod_opts = NULL; |
| if (!(in = sr_input_new(imod, mod_opts))) |
| g_critical("Error: failed to initialize input module."); |
| if (mod_opts) |
| g_hash_table_destroy(mod_opts); |
| if (mod_args) |
| g_hash_table_destroy(mod_args); |
| if ((fd = open(opt_input_file, O_RDONLY)) == -1) |
| g_critical("Failed to load %s: %s.", opt_input_file, |
| g_strerror(errno)); |
| } else { |
| if (strcmp(opt_input_file, "-")) { |
| /* |
| * An actual filename: let the input modules try to |
| * identify the file. |
| */ |
| if (sr_input_scan_file(opt_input_file, &in) == SR_OK) { |
| /* That worked, reopen the file for reading. */ |
| fd = open(opt_input_file, O_RDONLY); |
| } |
| } else { |
| /* |
| * Taking input from a pipe: let the input modules try |
| * to identify the stream content. |
| */ |
| if (!strcmp(opt_input_file, "-")) { |
| /* stdin */ |
| fd = 0; |
| } else { |
| if ((fd = open(opt_input_file, O_RDONLY)) == -1) |
| g_critical("Failed to load %s: %s.", opt_input_file, |
| g_strerror(errno)); |
| } |
| if ((len = read(fd, buf->str, BUFSIZE)) < 1) |
| g_critical("Failed to read %s: %s.", opt_input_file, |
| g_strerror(errno)); |
| buf->len = len; |
| sr_input_scan_buffer(buf, &in); |
| } |
| if (!in) |
| g_critical("Error: no input module found for this file."); |
| } |
| sr_session_new(sr_ctx, &session); |
| sr_session_datafeed_callback_add(session, &datafeed_in, NULL); |
| |
| got_sdi = FALSE; |
| while (TRUE) { |
| g_string_truncate(buf, 0); |
| len = read(fd, buf->str, BUFSIZE); |
| if (len < 0) |
| g_critical("Read failed: %s", g_strerror(errno)); |
| if (len == 0) |
| /* End of file or stream. */ |
| break; |
| buf->len = len; |
| if (sr_input_send(in, buf) != SR_OK) |
| break; |
| |
| sdi = sr_input_dev_inst_get(in); |
| if (!got_sdi && sdi) { |
| /* First time we got a valid sdi. */ |
| if (select_channels(sdi) != SR_OK) |
| return; |
| if (sr_session_dev_add(session, sdi) != SR_OK) { |
| g_critical("Failed to use device."); |
| sr_session_destroy(session); |
| return; |
| } |
| got_sdi = TRUE; |
| } |
| } |
| sr_input_end(in); |
| sr_input_free(in); |
| g_string_free(buf, TRUE); |
| |
| sr_session_destroy(session); |
| |
| } |
| |
| void load_input_file(void) |
| { |
| struct sr_session *session; |
| struct sr_dev_inst *sdi; |
| GSList *devices; |
| GMainLoop *main_loop; |
| int ret; |
| |
| if (!strcmp(opt_input_file, "-")) { |
| /* Input from stdin is never a session file. */ |
| load_input_file_module(); |
| } else { |
| if ((ret = sr_session_load(sr_ctx, opt_input_file, |
| &session)) == SR_OK) { |
| /* sigrok session file */ |
| ret = sr_session_dev_list(session, &devices); |
| if (ret != SR_OK || !devices || !devices->data) { |
| g_critical("Failed to access session device."); |
| g_slist_free(devices); |
| sr_session_destroy(session); |
| return; |
| } |
| sdi = devices->data; |
| g_slist_free(devices); |
| if (select_channels(sdi) != SR_OK) { |
| sr_session_destroy(session); |
| return; |
| } |
| main_loop = g_main_loop_new(NULL, FALSE); |
| |
| sr_session_datafeed_callback_add(session, datafeed_in, NULL); |
| sr_session_stopped_callback_set(session, |
| (sr_session_stopped_callback)g_main_loop_quit, |
| main_loop); |
| if (sr_session_start(session) == SR_OK) |
| g_main_loop_run(main_loop); |
| |
| g_main_loop_unref(main_loop); |
| sr_session_destroy(session); |
| } else if (ret != SR_ERR) { |
| /* It's a session file, but it didn't work out somehow. */ |
| g_critical("Failed to load session file."); |
| } else { |
| /* Fall back on input modules. */ |
| load_input_file_module(); |
| } |
| } |
| } |