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288f61d21f
Original commit message from CVS: expand tabs
203 lines
5.2 KiB
C
203 lines
5.2 KiB
C
/*
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* cutter.c - cut audio into pieces based on silence - thomas@apestaart.org
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*
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* construct a simple pipeline osssrc ! cutter ! filesink
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* pause when necessary, change output
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*
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* Latest change : 03/06/2001
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*
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* Version : 0.3
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*/
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#include <stdlib.h>
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#include <gst/gst.h>
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#include <unistd.h>
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#include <time.h>
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#define DEBUG
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gboolean playing = TRUE;
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gboolean cut_start_signalled = FALSE;
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gboolean cut_stop_signalled = FALSE;
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int id = 0; /* increment this for each new cut */
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GstElement *main_bin;
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GstElement *audiosrc;
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GstElement *queue;
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GstElement *thread;
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GstElement *cutter;
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GstElement *filesink;
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GstElement *encoder;
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char buffer[255];
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/* signal callbacks */
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void
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cut_start (GstElement * element)
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{
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g_print ("\nDEBUG: main: cut start\n");
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/* we should pause the pipeline, unlink cutter and filesink
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* create a new filesink to a real file, relink, and set to play
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*/
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g_print ("DEBUG: cut_start: main_bin pausing\n");
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gst_element_set_state (main_bin, GST_STATE_PAUSED);
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g_print ("DEBUG: cut_start: main_bin paused\n");
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{
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time_t seconds;
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struct tm *ct;
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time (&seconds);
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ct = localtime (&seconds);
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/* sprintf (buffer, "/news/incoming/audio/cutter.%06d.wav", id); */
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sprintf (buffer,
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"/news/incoming/audio/cutter.%04d%02d%02d.%02d%02d%02d.wav",
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ct->tm_year + 1900, ct->tm_mon, ct->tm_mday, ct->tm_hour, ct->tm_min,
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ct->tm_sec);
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}
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g_print ("DEBUG: cut_start: setting new location to %s\n", buffer);
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g_object_set (G_OBJECT (filesink), "location", buffer, NULL);
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g_object_set (G_OBJECT (filesink), "type", 4, NULL);
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gst_element_set_state (main_bin, GST_STATE_PLAYING);
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++id;
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g_print ("start_cut_signal done\n");
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return;
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}
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void
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cut_start_signal (GstElement * element)
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{
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g_print ("\nDEBUG: main: cut start signal\n");
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cut_start_signalled = TRUE;
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}
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void
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cut_stop (GstElement * element)
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{
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g_print ("\nDEBUG: main: cut stop\n");
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/* we should pause the pipeline, unlink filesink, create a fake filesink,
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* link to pipeline, and set to play
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*/
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g_print ("DEBUG: cut_stop: main_bin paused\n");
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gst_element_set_state (main_bin, GST_STATE_PAUSED);
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g_print ("DEBUG: cut_stop: setting new location\n");
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g_object_set (G_OBJECT (filesink), "location", "/dev/null", NULL);
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gst_element_set_state (main_bin, GST_STATE_PLAYING);
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g_print ("stop_cut_signal done\n");
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return;
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}
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void
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cut_stop_signal (GstElement * element)
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{
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g_print ("\nDEBUG: main: cut stop signal\n");
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cut_stop_signalled = TRUE;
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}
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int
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main (int argc, char *argv[])
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{
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/*int i, j; */
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/*gboolean done; */
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/*char buffer[20]; */
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/*output_channel_t *channel_out; */
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GstElement *audiosrc;
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gst_init (&argc, &argv);
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/*
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if (argc == 1)
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{
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g_print("usage: %s <filename1> <filename2> <...>\n", argv[0]);
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exit(-1);
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}*/
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/* set up input channel and main bin */
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g_print ("creating main bin\n");
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/* create cutter */
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cutter = gst_element_factory_make ("cutter", "cutter");
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g_object_set (G_OBJECT (cutter),
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"threshold_dB", -40.0, "runlength", 0.5, "prelength", 1.0, NULL);
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/* create an audio src */
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if (!(audiosrc = gst_element_factory_make ("osssrc", "audio_src")))
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g_error ("Could not create 'osssrc' element !\n");
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/* set params */
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g_object_set (G_OBJECT (audiosrc), "frequency", 44100,
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"channels", 1, "format", 16, NULL);
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if (!(encoder = gst_element_factory_make ("passthrough", "encoder")))
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g_error ("Could not create 'passthrough' element !\n");
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if (!(filesink = gst_element_factory_make ("afsink", "disk_sink")))
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g_error ("Could not create 'afsink' element !\n");
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g_object_set (G_OBJECT (filesink), "location", "/dev/null", NULL);
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thread = gst_thread_new ("thread");
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g_assert (thread != NULL);
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/* create main bin */
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main_bin = gst_pipeline_new ("bin");
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g_assert (main_bin != NULL);
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queue = gst_element_factory_make ("queue", "queue");
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g_assert (queue);
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/* add elements to bin */
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gst_bin_add (GST_BIN (main_bin), audiosrc);
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gst_bin_add (GST_BIN (thread), queue);
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gst_bin_add_many (GST_BIN (thread), cutter, encoder, filesink, NULL);
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gst_element_link_many (audiosrc, queue, cutter, encoder, filesink, NULL);
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gst_bin_add (GST_BIN (main_bin), thread);
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/* set signal handlers */
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g_print ("setting signal handlers\n");
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g_signal_connect (G_OBJECT (cutter), "cut_start",
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(GCallback) cut_start_signal, NULL);
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g_signal_connect (G_OBJECT (cutter), "cut_stop",
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(GCallback) cut_stop_signal, NULL);
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/* start playing */
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g_print ("setting to play\n");
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gst_element_set_state (main_bin, GST_STATE_PLAYING);
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/*
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g_print ("setting thread to play\n");
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gst_element_set_state (GST_ELEMENT (thread), GST_STATE_PLAYING);
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*/
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while (playing) {
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/* g_print ("> "); */
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gst_bin_iterate (GST_BIN (main_bin));
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/* g_print (" <"); */
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if (cut_start_signalled) {
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g_print ("\nDEBUG: main: cut_start_signalled true !\n");
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cut_start (cutter);
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cut_start_signalled = FALSE;
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}
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if (cut_stop_signalled) {
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g_print ("\nDEBUG: main: cut_stop_signalled true !\n");
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cut_stop (cutter);
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cut_stop_signalled = FALSE;
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}
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}
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g_print ("we're done iterating.\n");
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/* stop the bin */
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gst_element_set_state (main_bin, GST_STATE_NULL);
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gst_object_unref (filesink);
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gst_object_unref (main_bin);
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exit (0);
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}
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