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/*
* cutter.c - cut audio into pieces based on silence - thomas@apestaart.org
*
* construct a simple pipeline osssrc ! cutter ! disksink
* pause when necessary, change output
*
* Latest change : 03/06/2001
*
* Version : 0.3
*/
#include <stdlib.h>
#include <gst/gst.h>
#include <unistd.h>
#include <time.h>
#define DEBUG
gboolean playing = TRUE;
gboolean cut_start_signalled = FALSE;
gboolean cut_stop_signalled = FALSE;
int id = 0; /* increment this for each new cut */
GstElement *main_bin;
GstElement *audiosrc;
GstElement *queue;
GstElement *thread;
GstElement *cutter;
GstElement *disksink;
GstElement *encoder;
char buffer[255];
/* signal callbacks */
void cut_start (GstElement *element)
{
g_print ("\nDEBUG: main: cut start\n");
/* we should pause the pipeline, disconnect cutter and disksink
* create a new disksink to a real file, reconnect, and set to play
*/
g_print ("DEBUG: cut_start: main_bin pausing\n");
gst_element_set_state (main_bin, GST_STATE_PAUSED);
g_print ("DEBUG: cut_start: main_bin paused\n");
{
long seconds;
struct tm *ct;
time (&seconds);
ct = localtime (&seconds);
// sprintf (buffer, "/news/incoming/audio/cutter.%06d.wav", id);
sprintf (buffer, "/news/incoming/audio/cutter.%04d%02d%02d.%02d%02d%02d.wav",
ct->tm_year + 1900, ct->tm_mon, ct->tm_mday,
ct->tm_hour, ct->tm_min, ct->tm_sec);
}
g_print ("DEBUG: cut_start: setting new location to %s\n", buffer);
gtk_object_set (GTK_OBJECT (disksink), "location", buffer, NULL);
gtk_object_set (GTK_OBJECT (disksink), "type", 4, NULL);
gst_element_set_state (main_bin, GST_STATE_PLAYING);
++id;
g_print ("start_cut_signal done\n");
return;
}
void cut_start_signal (GstElement *element)
{
g_print ("\nDEBUG: main: cut start signal\n");
cut_start_signalled = TRUE;
}
void cut_stop (GstElement *element)
{
g_print ("\nDEBUG: main: cut stop\n");
/* we should pause the pipeline, disconnect disksink, create a fake disksink,
* connect to pipeline, and set to play
*/
g_print ("DEBUG: cut_stop: main_bin paused\n");
gst_element_set_state (main_bin, GST_STATE_PAUSED);
g_print ("DEBUG: cut_stop: setting new location\n");
gtk_object_set (GTK_OBJECT (disksink), "location", "/dev/null", NULL);
gst_element_set_state (main_bin, GST_STATE_PLAYING);
g_print ("stop_cut_signal done\n");
return;
}
void cut_stop_signal (GstElement *element)
{
g_print ("\nDEBUG: main: cut stop signal\n");
cut_stop_signalled = TRUE;
}
int main (int argc, char *argv[])
{
//int i, j;
//gboolean done;
//char buffer[20];
//output_channel_t *channel_out;
GstElement *audiosrc;
gst_init (&argc,&argv);
/*
if (argc == 1)
{
g_print("usage: %s <filename1> <filename2> <...>\n", argv[0]);
exit(-1);
}*/
/* set up input channel and main bin */
g_print ("creating main bin\n");
/* create cutter */
cutter = gst_elementfactory_make ("cutter", "cutter");
gtk_object_set (GTK_OBJECT (cutter),
"threshold_dB", -40.0,
"runlength", 0.5,
NULL);
/* create an audio src */
audiosrc = gst_elementfactory_make ("osssrc", "audio_src");
/* set params */
gtk_object_set (GTK_OBJECT (audiosrc), "frequency", 44100,
"channels", 1,
"format", 16, NULL);
encoder = gst_elementfactory_make ("passthrough", "encoder");
disksink = gst_elementfactory_make ("afsink", "disk_sink");
gtk_object_set (GTK_OBJECT (disksink), "location", "/dev/null", NULL);
thread = gst_thread_new ("thread");
g_assert (thread != NULL);
/* create main bin */
main_bin = gst_pipeline_new ("bin");
g_assert (main_bin != NULL);
queue = gst_elementfactory_make ("queue", "queue");
/* add elements to bin */
gst_bin_add (GST_BIN (main_bin), audiosrc);
gst_bin_add (GST_BIN (thread), queue);
gst_bin_add (GST_BIN (thread), cutter);
gst_bin_add (GST_BIN (thread), encoder);
gst_bin_add (GST_BIN (thread), disksink);
/* connect adder and disksink */
gst_pad_connect (gst_element_get_pad (audiosrc, "src"),
gst_element_get_pad (queue, "sink"));
gst_pad_connect (gst_element_get_pad (queue, "src"),
gst_element_get_pad (cutter, "sink"));
gst_pad_connect (gst_element_get_pad (cutter, "src"),
gst_element_get_pad (encoder, "sink"));
gst_pad_connect (gst_element_get_pad (encoder, "src"),
gst_element_get_pad (disksink, "sink"));
gst_bin_add (GST_BIN (main_bin), thread);
/* set signal handlers */
g_print ("setting signal handlers\n");
gtk_signal_connect (GTK_OBJECT(cutter), "cut_start",
GTK_SIGNAL_FUNC(cut_start_signal), NULL);
gtk_signal_connect (GTK_OBJECT(cutter), "cut_stop",
GTK_SIGNAL_FUNC(cut_stop_signal), NULL);
/* start playing */
g_print ("setting to play\n");
gst_element_set_state (main_bin, GST_STATE_PLAYING);
/*
g_print ("setting thread to play\n");
gst_element_set_state (GST_ELEMENT (thread), GST_STATE_PLAYING);
*/
while (playing)
{
// g_print ("> ");
gst_bin_iterate (GST_BIN (main_bin));
// g_print (" <");
if (cut_start_signalled)
{
g_print ("\nDEBUG: main: cut_start_signalled true !\n");
cut_start (cutter);
cut_start_signalled = FALSE;
}
if (cut_stop_signalled)
{
g_print ("\nDEBUG: main: cut_stop_signalled true !\n");
cut_stop (cutter);
cut_stop_signalled = FALSE;
}
}
g_print ("we're done iterating.\n");
/* stop the bin */
gst_element_set_state (main_bin, GST_STATE_NULL);
gst_object_destroy (GST_OBJECT (disksink));
gst_object_destroy (GST_OBJECT (main_bin));
exit(0);
}
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