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added example program to show how cutter plugin works
Original commit message from CVS: added example program to show how cutter plugin works
This commit is contained in:
Thomas Vander Stichele
parent
f9023ba24e
commit
b997098405
6 changed files with 348 additions and 0 deletions
5
examples/cutter/Makefile.am
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5
examples/cutter/Makefile.am
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noinst_PROGRAMS = cutter
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noinst_HEADERS = cutter.h
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LIBS += $(GST_LIBS)
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CFLAGS += $(GST_CFLAGS)
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155
examples/cutter/cutter.c
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155
examples/cutter/cutter.c
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/*
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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 ! disksink
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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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#define DEBUG
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gboolean playing = TRUE;
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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 *cutter;
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GstElement *disksink;
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GstElement *encoder;
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char buffer[255];
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/* signal callbacks */
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void 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, disconnect cutter and disksink
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* create a new disksink to a real file, reconnect, and set to play
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*/
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g_print ("DEBUG: cut_start: main_bin paused\n");
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gst_element_set_state (main_bin, GST_STATE_PAUSED);
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sprintf (buffer, "/tmp/test%d.raw", id);
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g_print ("DEBUG: cut_start: setting new location to %s\n", buffer);
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gtk_object_set (GTK_OBJECT (disksink), "location", buffer, NULL);
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/*
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gtk_object_set (GTK_OBJECT (disksink), "type", 4, NULL);
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*/
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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 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, disconnect disksink, create a fake disksink,
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* connect 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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gtk_object_set (GTK_OBJECT (disksink), "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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int 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_elementfactory_make ("cutter", "cutter");
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gtk_object_set (GTK_OBJECT (cutter),
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"threshold_dB", -60.0,
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"runlength", 2.0,
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NULL);
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/* create an audio src */
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audiosrc = gst_elementfactory_make ("osssrc", "audio_src");
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/* set params */
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gtk_object_set (GTK_OBJECT (audiosrc), "frequency", 44100,
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"channels", 2,
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"format", 16, NULL);
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encoder = gst_elementfactory_make ("passthrough", "encoder");
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disksink = gst_elementfactory_make ("disksink", "disk_sink");
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gtk_object_set (GTK_OBJECT (disksink), "location", "/dev/null", NULL);
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/* create main bin */
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main_bin = gst_pipeline_new ("bin");
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/* add elements to bin */
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gst_bin_add (GST_BIN (main_bin), cutter);
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gst_bin_add (GST_BIN (main_bin), audiosrc);
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gst_bin_add (GST_BIN (main_bin), encoder);
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gst_bin_add (GST_BIN (main_bin), disksink);
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/* connect adder and disksink */
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gst_pad_connect (gst_element_get_pad (audiosrc, "src"),
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gst_element_get_pad (cutter,"sink"));
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gst_pad_connect (gst_element_get_pad (cutter, "src"),
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gst_element_get_pad (encoder, "sink"));
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gst_pad_connect (gst_element_get_pad (encoder, "src"),
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gst_element_get_pad (disksink, "sink"));
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/* set signal handlers */
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g_print ("setting signal handlers\n");
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gtk_signal_connect (GTK_OBJECT(cutter), "cut_start",
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GTK_SIGNAL_FUNC(cut_start), NULL);
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gtk_signal_connect (GTK_OBJECT(cutter), "cut_stop",
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GTK_SIGNAL_FUNC(cut_stop), 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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while (playing)
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{
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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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}
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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_destroy (GST_OBJECT (disksink));
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gst_object_destroy (GST_OBJECT (main_bin));
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exit(0);
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}
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14
examples/cutter/cutter.h
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14
examples/cutter/cutter.h
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/*
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* cutter.h header file
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* thomas@apestaart.org
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*/
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typedef struct
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{
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GstElement *pipe;
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GstElement *disksink;
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GstElement *audiosink;
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char *location;
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int channel_id;
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} output_channel_t;
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5
tests/old/examples/cutter/Makefile.am
Normal file
5
tests/old/examples/cutter/Makefile.am
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@ -0,0 +1,5 @@
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noinst_PROGRAMS = cutter
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noinst_HEADERS = cutter.h
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LIBS += $(GST_LIBS)
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CFLAGS += $(GST_CFLAGS)
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155
tests/old/examples/cutter/cutter.c
Normal file
155
tests/old/examples/cutter/cutter.c
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@ -0,0 +1,155 @@
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/*
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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 ! disksink
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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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#define DEBUG
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gboolean playing = TRUE;
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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 *cutter;
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GstElement *disksink;
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GstElement *encoder;
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char buffer[255];
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/* signal callbacks */
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void 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, disconnect cutter and disksink
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* create a new disksink to a real file, reconnect, and set to play
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*/
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g_print ("DEBUG: cut_start: main_bin paused\n");
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gst_element_set_state (main_bin, GST_STATE_PAUSED);
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sprintf (buffer, "/tmp/test%d.raw", id);
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g_print ("DEBUG: cut_start: setting new location to %s\n", buffer);
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gtk_object_set (GTK_OBJECT (disksink), "location", buffer, NULL);
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/*
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gtk_object_set (GTK_OBJECT (disksink), "type", 4, NULL);
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*/
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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 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, disconnect disksink, create a fake disksink,
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* connect 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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gtk_object_set (GTK_OBJECT (disksink), "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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int 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_elementfactory_make ("cutter", "cutter");
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gtk_object_set (GTK_OBJECT (cutter),
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"threshold_dB", -60.0,
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"runlength", 2.0,
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NULL);
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/* create an audio src */
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audiosrc = gst_elementfactory_make ("osssrc", "audio_src");
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/* set params */
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gtk_object_set (GTK_OBJECT (audiosrc), "frequency", 44100,
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"channels", 2,
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"format", 16, NULL);
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encoder = gst_elementfactory_make ("passthrough", "encoder");
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disksink = gst_elementfactory_make ("disksink", "disk_sink");
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gtk_object_set (GTK_OBJECT (disksink), "location", "/dev/null", NULL);
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/* create main bin */
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main_bin = gst_pipeline_new ("bin");
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/* add elements to bin */
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gst_bin_add (GST_BIN (main_bin), cutter);
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gst_bin_add (GST_BIN (main_bin), audiosrc);
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gst_bin_add (GST_BIN (main_bin), encoder);
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gst_bin_add (GST_BIN (main_bin), disksink);
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/* connect adder and disksink */
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gst_pad_connect (gst_element_get_pad (audiosrc, "src"),
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gst_element_get_pad (cutter,"sink"));
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gst_pad_connect (gst_element_get_pad (cutter, "src"),
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gst_element_get_pad (encoder, "sink"));
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gst_pad_connect (gst_element_get_pad (encoder, "src"),
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gst_element_get_pad (disksink, "sink"));
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/* set signal handlers */
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g_print ("setting signal handlers\n");
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gtk_signal_connect (GTK_OBJECT(cutter), "cut_start",
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GTK_SIGNAL_FUNC(cut_start), NULL);
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gtk_signal_connect (GTK_OBJECT(cutter), "cut_stop",
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GTK_SIGNAL_FUNC(cut_stop), 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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while (playing)
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{
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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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}
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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_destroy (GST_OBJECT (disksink));
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gst_object_destroy (GST_OBJECT (main_bin));
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exit(0);
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}
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14
tests/old/examples/cutter/cutter.h
Normal file
14
tests/old/examples/cutter/cutter.h
Normal file
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@ -0,0 +1,14 @@
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/*
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* cutter.h header file
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* thomas@apestaart.org
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*/
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typedef struct
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{
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GstElement *pipe;
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GstElement *disksink;
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GstElement *audiosink;
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char *location;
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int channel_id;
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} output_channel_t;
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