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Diffstat (limited to 'src/sydra-launch.c')
| -rw-r--r-- | src/sydra-launch.c | 325 |
1 files changed, 325 insertions, 0 deletions
diff --git a/src/sydra-launch.c b/src/sydra-launch.c new file mode 100644 index 0000000..8417695 --- /dev/null +++ b/src/sydra-launch.c @@ -0,0 +1,325 @@ +/* + * sydra + * + * sydra is a toolbox which allows you to set up multiple bidirectional + * Video/Audio streams from external locations. + * sydra has been written to be used for the Elevate Festival in Graz + * Austria in order to involve external locations to present themselves + * at the festival. + * + * + * Copyright (C) 2014 Christian Pointner <equinox@spreadspace.org> + * + * This file is part of sydra. + * + * sydra 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 + * any later version. + * + * sydra 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 sydra. If not, see <http://www.gnu.org/licenses/>. + * + * In addition, as a special exception, the copyright holders hereby + * grant permission for non-GPL-compatible GStreamer plugins to be used + * and distributed together with GStreamer and sydra. + * This permission goes above and beyond the permissions granted by the + * GPL license sydra is covered by. + */ + +#define _GNU_SOURCE +#include <stdlib.h> +#include <stdio.h> +#include <errno.h> +#include <string.h> +#include <sys/types.h> +#include <sys/socket.h> + +#include <glib.h> +#include <glib-unix.h> +#include <gst/gst.h> + +#include "datatypes.h" +#include "options-launch.h" +#include "log.h" +#include "daemon.h" +#include "utils.h" +#include "pipelines-launch.h" + + +static gboolean sig_handler_terminate(gpointer user_data) +{ + GMainLoop *loop = (GMainLoop *)user_data; + + log_printf(NOTICE, "signal received, closing application"); + g_main_loop_quit(loop); + return TRUE; +} + +static gboolean bus_call(GstBus *bus, GstMessage *msg, gpointer data) +{ + GMainLoop *loop = (GMainLoop *)data; + + switch (GST_MESSAGE_TYPE(msg)) { + case GST_MESSAGE_EOS: { + log_printf(NOTICE, "End of stream"); + g_main_loop_quit(loop); + break; + } + case GST_MESSAGE_APPLICATION: { + log_printf(DEBUG, "Got Application Message!"); + const GstStructure* ms = gst_message_get_structure(msg); + gboolean quit; + gst_structure_get_boolean(ms, "quit", &quit); + if(quit) { + const gchar* reason = gst_structure_get_string (ms, "reason"); + log_printf(NOTICE, "closing due to message: %s", reason); + g_main_loop_quit(loop); + } + break; + } + case GST_MESSAGE_INFO: { + GError *info; + gst_message_parse_info(msg, &info, NULL); + log_printf(INFO, "%s", info->message); + g_error_free(info); + break; + } + case GST_MESSAGE_WARNING: { + GError *warning; + gst_message_parse_warning(msg, &warning, NULL); + log_printf(WARNING, "%s", warning->message); + g_error_free(warning); + break; + } + case GST_MESSAGE_ERROR: { + GError *error; + gst_message_parse_error(msg, &error, NULL); + log_printf(ERROR, "%s", error->message); + g_error_free(error); + g_main_loop_quit(loop); + break; + } + case GST_MESSAGE_STATE_CHANGED: { + GstState old_state, new_state; + gst_message_parse_state_changed(msg, &old_state, &new_state, NULL); + log_printf(DEBUG, "Element '%s' changed state from %s to %s", + (msg->src ? GST_OBJECT_NAME(msg->src) : "NULL"), + gst_element_state_get_name(old_state), + gst_element_state_get_name(new_state)); + break; + } + case GST_MESSAGE_NEW_CLOCK: + { + GstClock *clock; + gst_message_parse_new_clock(msg, &clock); + log_printf(NOTICE, "New clock: %s", (clock ? GST_OBJECT_NAME (clock) : "NULL")); + break; + } + case GST_MESSAGE_QOS: { + guint64 running_time, stream_time, timestamp, duration; + gst_message_parse_qos(msg, NULL, &running_time, &stream_time, ×tamp, &duration); + log_printf(WARNING, "Element '%s' dropped frames running_time=%lu, stream_time=%lu, timestamp=%lu, duration=%lu", + (msg->src ? GST_OBJECT_NAME(msg->src) : "NULL"), running_time, stream_time, timestamp, duration); + break; + } + /* case GST_MESSAGE_STREAM_STATUS: */ + /* { */ + /* GstStreamStatusType type; */ + /* GstElement *owner; */ + /* const GValue *val; */ + /* gchar *path, *ownerstr; */ + /* GstTask *task = NULL; */ + + /* gst_message_parse_stream_status (msg, &type, &owner); */ + /* val = gst_message_get_stream_status_object (msg); */ + + /* path = gst_object_get_path_string (GST_MESSAGE_SRC (msg)); */ + /* ownerstr = gst_object_get_path_string (GST_OBJECT (owner)); */ + /* log_printf(DEBUG,"Recevied Stream-Status message type: %d, source: %s, owner: %s, object: type %s, value %p", */ + /* type, path, ownerstr, G_VALUE_TYPE_NAME (val), g_value_get_object (val)); */ + /* g_free (path); */ + /* g_free (ownerstr); */ + + /* /\* see if we know how to deal with this object *\/ */ + /* if (G_VALUE_TYPE (val) == GST_TYPE_TASK) { */ + /* task = g_value_get_object (val); */ + /* } */ + + /* switch (type) { */ + /* case GST_STREAM_STATUS_TYPE_CREATE: */ + /* log_printf(DEBUG," created task %p", task); */ + /* break; */ + /* case GST_STREAM_STATUS_TYPE_ENTER: */ + /* /\* log_printf(DEBUG," raising task priority"); *\/ */ + /* /\* setpriority (PRIO_PROCESS, 0, -10); *\/ */ + /* break; */ + /* case GST_STREAM_STATUS_TYPE_LEAVE: */ + /* break; */ + /* default: */ + /* break; */ + /* } */ + /* break; */ + /* } */ + default: + /* log_printf(DEBUG, "unkonwn message %s from %s", GST_MESSAGE_TYPE_NAME(msg), GST_MESSAGE_SRC_NAME(msg)); */ + return TRUE; + } + return TRUE; +} + +int main_loop(options_t* opt) +{ + log_printf(NOTICE, "entering main loop"); + + GstElement *pipeline = create_pipeline(opt); + if(!pipeline) { + log_printf(ERROR, "creating pipeline failed - exitting"); + return -1; + } + + GMainLoop *loop = g_main_loop_new(NULL, FALSE); + + GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline)); + gst_bus_add_watch(bus, bus_call, loop); + gst_object_unref(GST_OBJECT(bus)); + + gulong deep_notify_id = 0; + if(opt->debug_) { + deep_notify_id = g_signal_connect(pipeline, "deep-notify", + G_CALLBACK(gst_object_default_deep_notify), NULL); + } + + log_printf(NOTICE, "Set State: Paused"); + gst_element_set_state(pipeline, GST_STATE_PAUSED); + log_printf(NOTICE, "Set State: Playing"); + gst_element_set_state(pipeline, GST_STATE_PLAYING); + + g_unix_signal_add(SIGHUP, sig_handler_terminate, loop); + g_unix_signal_add(SIGINT, sig_handler_terminate, loop); + g_unix_signal_add(SIGTERM, sig_handler_terminate, loop); + g_main_loop_run(loop); + + if (deep_notify_id != 0) + g_signal_handler_disconnect(pipeline, deep_notify_id); + + log_printf(NOTICE, "Stopping pipeline"); + gst_element_set_state(pipeline, GST_STATE_NULL); + gst_object_unref(GST_OBJECT(pipeline)); + + return 0; +} + +int main(int argc, char* argv[]) +{ + log_init(); + log_close(); + + options_t opt; + int ret = options_parse(&opt, argc, argv); + if(ret) { + if(ret == -1) { + options_print_version(); + ret = 0; + } + options_clear(&opt); + log_close(); + exit(ret); + } + + guint len = g_strv_length(opt.log_targets_); + guint i; + for(i = 0; i < len; ++i) { + ret = log_add_target(opt.log_targets_[i]); + if(ret) { + switch(ret) { + case -2: fprintf(stderr, "memory error on log_add_target, exitting\n"); break; + case -3: fprintf(stderr, "unknown log target: '%s', exitting\n", (char*)(opt.log_targets_[i])); break; + case -4: fprintf(stderr, "this log target is only allowed once: '%s', exitting\n", (char*)(opt.log_targets_[i])); break; + default: fprintf(stderr, "syntax error near: '%s', exitting\n", (char*)(opt.log_targets_[i])); break; + } + + options_clear(&opt); + log_close(); + exit(ret); + } + } + + log_printf(NOTICE, "just started..."); + + if(opt.debug_) + options_print(&opt); + + if(opt.appname_) + g_set_prgname (opt.appname_); + else + g_set_prgname (opt.progname_); + + priv_info_t priv; + if(opt.username_) + if(priv_init(&priv, opt.username_, opt.groupname_)) { + options_clear(&opt); + log_close(); + exit(-1); + } + + FILE* pid_file = NULL; + if(opt.pid_file_) { + pid_file = fopen(opt.pid_file_, "w"); + if(!pid_file) { + log_printf(WARNING, "unable to open pid file: %s", strerror(errno)); + } + } + + if(opt.chroot_dir_) + if(do_chroot(opt.chroot_dir_)) { + options_clear(&opt); + log_close(); + exit(-1); + } + if(opt.username_) + if(priv_drop(&priv)) { + options_clear(&opt); + log_close(); + exit(-1); + } + + if(opt.daemonize_) { + pid_t oldpid = getpid(); + daemonize(); + log_printf(INFO, "running in background now (old pid: %d)", oldpid); + } + + if(pid_file) { + pid_t pid = getpid(); + fprintf(pid_file, "%d", pid); + fclose(pid_file); + } + + const gchar *nano_str; + guint major, minor, micro, nano; + gst_version(&major, &minor, µ, &nano); + if (nano == 1) + nano_str = " (CVS)"; + else if (nano == 2) + nano_str = " (Prerelease)"; + else + nano_str = ""; + log_printf(NOTICE, "sydra-launch linked against GStreamer %d.%d.%d%s", major, minor, micro, nano_str); + + ret = main_loop(&opt); + + options_clear(&opt); + + log_printf(NOTICE, "sydra-launch shutdown"); + + gst_deinit(); + log_close(); + + return ret; +} |