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/*
* mur.sat
*
* Somewhen in the year 2012, mur.at will have a nano satellite launched
* into a low earth orbit (310 km above the surface of our planet). The
* satellite itself is a TubeSat personal satellite kit, developed and
* launched by interorbital systems. mur.sat is a joint venture of mur.at,
* ESC im Labor and realraum.
*
* Please visit the project hompage at sat.mur.at for further information.
*
*
* Copyright (C) 2011 Christian Pointner <equinox@mur.at>
*
* This file is part of mur.sat.
*
* mur.sat 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.
*
* mur.sat 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 mur.sat. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <gst/gst.h>
#include <string.h>
#include <errno.h>
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
static gboolean bus_call (GstBus *bus, GstMessage *msg, gpointer data)
{
GMainLoop *loop = (GMainLoop *) data;
switch (GST_MESSAGE_TYPE (msg)) {
case GST_MESSAGE_EOS:
g_print ("End of stream\n");
g_main_loop_quit (loop);
break;
case GST_MESSAGE_ERROR: {
gchar *debug;
GError *error;
gst_message_parse_error (msg, &error, &debug);
g_free (debug);
g_printerr ("Error: %s\n", error->message);
g_error_free (error);
g_main_loop_quit (loop);
break;
}
default:
break;
}
return TRUE;
}
struct thread_param {
GstElement* element;
GMainLoop* loop;
};
static GThread *reader_thread;
static gpointer reader_thread_func(gpointer data)
{
struct thread_param* param = (struct thread_param *)data;
GMainLoop* loop = param->loop;
GstElement* element = param->element;
free(param);
printf("reader thread started\n");
struct termios tio;
tcgetattr(fileno(stdin), &tio);
tio.c_lflag &= ~ICANON;
tcsetattr(fileno(stdin), TCSANOW, &tio);
int code = -1;
for(;;) {
char sign;
int ret = read(0, &sign, 1);
if(!ret) break;
if(ret < 0) {
printf("read error: %s", strerror(errno));
break;
}
GstStructure* st;
GstEvent* ev;
if(sign != 's') {
if(code != -1) {
st = gst_structure_new ("dtmf-event", "type", G_TYPE_INT, 1, "number", G_TYPE_INT, code, "start", G_TYPE_BOOLEAN, FALSE, NULL);
ev = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM, st);
gst_element_send_event(element, ev);
}
code = -1;
sign=tolower(sign);
switch(sign) {
case '0': code = 0; break;
case '1': code = 1; break;
case '2': code = 2; break;
case '3': code = 3; break;
case '4': code = 4; break;
case '5': code = 5; break;
case '6': code = 6; break;
case '7': code = 7; break;
case '8': code = 8; break;
case '9': code = 9; break;
case '*': code = 10; break;
case '#': code = 11; break;
case 'a': code = 12; break;
case 'b': code = 13; break;
case 'c': code = 14; break;
case 'd': code = 15; break;
default: continue;
}
st = gst_structure_new ("dtmf-event", "type", G_TYPE_INT, 1, "number", G_TYPE_INT, code, "volume", G_TYPE_INT, 25, "start", G_TYPE_BOOLEAN, TRUE, NULL);
ev = gst_event_new_custom(GST_EVENT_CUSTOM_UPSTREAM, st);
gst_element_send_event(element, ev);
} else if(code != -1) {
st = gst_structure_new ("dtmf-event", "type", G_TYPE_INT, 1, "number", G_TYPE_INT, code, "start", G_TYPE_BOOLEAN, FALSE, NULL);
ev = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM, st);
gst_element_send_event(element, ev);
code = -1;
}
}
g_main_loop_quit(loop);
return NULL;
}
int init_code_reader(GMainLoop *loop, GstElement* element)
{
g_assert(!reader_thread);
struct thread_param* p = malloc(sizeof(struct thread_param));
if(!p)
return -1;
p->element = element;
p->loop = loop;
reader_thread = g_thread_create(reader_thread_func, p, TRUE, NULL);
if(!reader_thread)
return -1;
return 0;
}
int main (int argc, char *argv[])
{
GMainLoop *loop;
GstElement *pipeline, *source, *demuxer, *decoder, *conv, *sink;
GstBus *bus;
/* Initialisation */
gst_init (&argc, &argv);
loop = g_main_loop_new (NULL, FALSE);
/* Create gstreamer elements */
pipeline = gst_pipeline_new ("gst-dtmf");
source = gst_element_factory_make ("dtmfsrc", "source");
sink = gst_element_factory_make ("autoaudiosink", "output");
if (!pipeline || !source || !sink) {
g_printerr ("One element could not be created. Exiting.\n");
return -1;
}
g_object_set(G_OBJECT (source), "interval", 10, NULL);
/* Set up the pipeline */
/* we add a message handler */
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_watch (bus, bus_call, loop);
gst_object_unref (bus);
/* we add all elements into the pipeline */
/* file-source | ogg-demuxer | vorbis-decoder | converter | alsa-output */
gst_bin_add_many (GST_BIN (pipeline), source, sink, NULL);
gst_element_link_many (source, sink, NULL);
/* Set the pipeline to "playing" state*/
gst_element_set_state (pipeline, GST_STATE_PLAYING);
init_code_reader(loop, pipeline);
/* Iterate */
g_print ("Running...\n");
g_main_loop_run (loop);
/* Out of the main loop, clean up nicely */
g_print ("Returned, stopping playback\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
g_print ("Deleting pipeline\n");
gst_object_unref (GST_OBJECT (pipeline));
return 0;
}
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