Added an example audio mixer.

Original commit message from CVS:
Added an example audio mixer.

diff --git a/examples/autoplug/autoplug.c b/examples/autoplug/autoplug.c
index 23acf5c..ce3b00e 100644 (file)
--- a/examples/autoplug/autoplug.c
+++ b/examples/autoplug/autoplug.c
@@ -9,8 +9,10 @@ gst_play_have_type (GstElement *sink, GstElement *sink2, gpointer data)
   *(gboolean *)data = TRUE;
 }
 
-gboolean idle_func(gpointer data) {
-  return gst_bin_iterate(GST_BIN(data));
+gboolean 
+idle_func (gpointer data)
+{
+  return gst_bin_iterate (GST_BIN (data));
 }
 
 static GstCaps*

diff --git a/examples/mixer/.gitignore b/examples/mixer/.gitignore
new file mode 100644 (file)
index 0000000..31e0fce
--- /dev/null
+++ b/examples/mixer/.gitignore
@@ -0,0 +1 @@
+helloworld

diff --git a/examples/mixer/Makefile.am b/examples/mixer/Makefile.am
new file mode 100644 (file)
index 0000000..9c5573b
--- /dev/null
+++ b/examples/mixer/Makefile.am
@@ -0,0 +1,4 @@
+noinst_PROGRAMS = mixer
+
+LIBS += $(GST_LIBS)
+CFLAGS += $(GST_CFLAGS)

diff --git a/examples/mixer/mixer.c b/examples/mixer/mixer.c
new file mode 100644 (file)
index 0000000..8d3a54a
--- /dev/null
+++ b/examples/mixer/mixer.c
@@ -0,0 +1,168 @@
+#include <stdlib.h>
+#include <gst/gst.h>
+
+gboolean playing;
+
+/* example based on helloworld by thomas@apestaart.org
+   demonstrates the adder plugin and the volume envelope plugin */
+
+/* eos will be called when the src element has an end of stream */
+void eos(GstElement *element) 
+{
+  g_print("have eos, quitting\n");
+
+  playing = FALSE;
+}
+
+int main(int argc,char *argv[]) 
+{
+  GstElement *bin_in1, *bin_in2, *main_bin;
+  GstElement *disksrc1, *decoder1, *volenv1;
+  GstElement *disksrc2, *decoder2, *volenv2;
+  GstElement *adder;
+  GstElement *audiosink;
+
+  GstPad *pad; /* to request pads for the adder */
+
+  gst_init(&argc,&argv);
+
+  if (argc != 3) {
+    g_print("usage: %s <filename1> <filename2>\n", argv[0]);
+    exit(-1);
+  }
+
+  /* create input bins */
+
+  /* create bins to hold the input elements */
+  bin_in1 = gst_bin_new("bin");
+  bin_in2 = gst_bin_new("bin");
+
+  /* first input bin */
+
+  /* create elements */
+
+  disksrc1 = gst_elementfactory_make("disksrc", "disk_source1");
+  gtk_object_set(GTK_OBJECT(disksrc1),"location", argv[1],NULL);
+  gtk_signal_connect(GTK_OBJECT(disksrc1),"eos",
+                     GTK_SIGNAL_FUNC(eos),NULL);
+  decoder1 = gst_elementfactory_make("mad","decoder1");
+  volenv1 = gst_elementfactory_make("volenv", "volume1");
+
+  /* add to the bin */
+
+  gst_bin_add(GST_BIN(bin_in1), disksrc1);
+  gst_bin_add(GST_BIN(bin_in1), decoder1);
+  gst_bin_add(GST_BIN(bin_in1), volenv1);
+
+  /* connect elements */
+  gst_pad_connect(gst_element_get_pad(disksrc1,"src"),
+                  gst_element_get_pad(decoder1,"sink"));
+  gst_pad_connect(gst_element_get_pad(decoder1,"src"),
+                  gst_element_get_pad(volenv1,"sink"));
+
+  /* add a ghost pad */
+  gst_element_add_ghost_pad (bin_in1, gst_element_get_pad (volenv1, "src"), "channel1");
+
+  /* second input bin */
+
+  /* create elements */
+
+  disksrc2 = gst_elementfactory_make("disksrc", "disk_source2");
+  gtk_object_set(GTK_OBJECT(disksrc2),"location", argv[2],NULL);
+  gtk_signal_connect(GTK_OBJECT(disksrc2),"eos",
+                     GTK_SIGNAL_FUNC(eos),NULL);
+  decoder2 = gst_elementfactory_make("mad","decoder2");
+  volenv2 = gst_elementfactory_make("volenv", "volume2");
+
+  /* add to the bin */
+
+  gst_bin_add(GST_BIN(bin_in2), disksrc2);
+  gst_bin_add(GST_BIN(bin_in2), decoder2);
+  gst_bin_add(GST_BIN(bin_in2), volenv2);
+
+  /* connect elements */
+  gst_pad_connect(gst_element_get_pad(disksrc2,"src"),
+                  gst_element_get_pad(decoder2,"sink"));
+  gst_pad_connect(gst_element_get_pad(decoder2,"src"),
+                  gst_element_get_pad(volenv2,"sink"));
+
+  /* add a ghost pad */
+  gst_element_add_ghost_pad (bin_in2, gst_element_get_pad (volenv2, "src"), "channel2");
+  
+
+  /* create adder */
+  adder = gst_elementfactory_make("adder", "adderel");
+
+  /* create an audio sink */
+  audiosink = gst_elementfactory_make("esdsink", "play_audio");
+
+  /* now create main bin */
+  main_bin = gst_bin_new("bin");
+
+  gst_bin_add(GST_BIN(main_bin), bin_in1);
+  gst_bin_add(GST_BIN(main_bin), bin_in2);
+  gst_bin_add(GST_BIN(main_bin), adder);
+  gst_bin_add(GST_BIN(main_bin), audiosink);
+
+  /* request pads and connect to adder */
+
+  pad = gst_element_request_pad_by_name (adder, "sink%d");
+  g_print ("new pad %s\n", gst_pad_get_name (pad));
+  gst_pad_connect (gst_element_get_pad (bin_in1, "channel1"), pad);
+  pad = gst_element_request_pad_by_name (adder, "sink%d");
+  g_print ("new pad %s\n", gst_pad_get_name (pad));
+  gst_pad_connect (gst_element_get_pad (bin_in2, "channel2"), pad);
+
+  /* connect adder and audiosink */
+
+  gst_pad_connect(gst_element_get_pad(adder,"src"),
+                  gst_element_get_pad(audiosink,"sink"));
+
+  /* register the volume envelope */
+
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "0:0.0001", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "2:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "4:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "5:.1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "6:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "7:.1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "8:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "15:0.8", NULL);
+
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "0:0.001", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "4:0.001", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "5:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "6:.1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "7:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "8:.1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "15:0.001", NULL);
+
+  /* start playing */
+  gst_element_set_state(main_bin, GST_STATE_PLAYING);
+
+  playing = TRUE;
+
+  while (playing) {
+    gst_bin_iterate(GST_BIN(main_bin));
+  }
+
+  /* stop the bin */
+  gst_element_set_state(main_bin, GST_STATE_NULL);
+
+  gst_object_destroy(GST_OBJECT(audiosink));
+
+  gst_object_destroy(GST_OBJECT(disksrc1));
+  gst_object_destroy(GST_OBJECT(decoder1));
+  gst_object_destroy(GST_OBJECT(volenv1));
+
+  gst_object_destroy(GST_OBJECT(disksrc2));
+  gst_object_destroy(GST_OBJECT(decoder2));
+  gst_object_destroy(GST_OBJECT(volenv2));
+
+  gst_object_destroy(GST_OBJECT(bin_in1));
+  gst_object_destroy(GST_OBJECT(bin_in2));
+  gst_object_destroy(GST_OBJECT(main_bin));
+
+  exit(0);
+}
+

diff --git a/tests/old/examples/autoplug/autoplug.c b/tests/old/examples/autoplug/autoplug.c
index 23acf5c..ce3b00e 100644 (file)
--- a/tests/old/examples/autoplug/autoplug.c
+++ b/tests/old/examples/autoplug/autoplug.c
@@ -9,8 +9,10 @@ gst_play_have_type (GstElement *sink, GstElement *sink2, gpointer data)
   *(gboolean *)data = TRUE;
 }
 
-gboolean idle_func(gpointer data) {
-  return gst_bin_iterate(GST_BIN(data));
+gboolean 
+idle_func (gpointer data)
+{
+  return gst_bin_iterate (GST_BIN (data));
 }
 
 static GstCaps*

diff --git a/tests/old/examples/mixer/.gitignore b/tests/old/examples/mixer/.gitignore
new file mode 100644 (file)
index 0000000..31e0fce
--- /dev/null
+++ b/tests/old/examples/mixer/.gitignore
@@ -0,0 +1 @@
+helloworld

diff --git a/tests/old/examples/mixer/Makefile.am b/tests/old/examples/mixer/Makefile.am
new file mode 100644 (file)
index 0000000..9c5573b
--- /dev/null
+++ b/tests/old/examples/mixer/Makefile.am
@@ -0,0 +1,4 @@
+noinst_PROGRAMS = mixer
+
+LIBS += $(GST_LIBS)
+CFLAGS += $(GST_CFLAGS)

diff --git a/tests/old/examples/mixer/mixer.c b/tests/old/examples/mixer/mixer.c
new file mode 100644 (file)
index 0000000..8d3a54a
--- /dev/null
+++ b/tests/old/examples/mixer/mixer.c
@@ -0,0 +1,168 @@
+#include <stdlib.h>
+#include <gst/gst.h>
+
+gboolean playing;
+
+/* example based on helloworld by thomas@apestaart.org
+   demonstrates the adder plugin and the volume envelope plugin */
+
+/* eos will be called when the src element has an end of stream */
+void eos(GstElement *element) 
+{
+  g_print("have eos, quitting\n");
+
+  playing = FALSE;
+}
+
+int main(int argc,char *argv[]) 
+{
+  GstElement *bin_in1, *bin_in2, *main_bin;
+  GstElement *disksrc1, *decoder1, *volenv1;
+  GstElement *disksrc2, *decoder2, *volenv2;
+  GstElement *adder;
+  GstElement *audiosink;
+
+  GstPad *pad; /* to request pads for the adder */
+
+  gst_init(&argc,&argv);
+
+  if (argc != 3) {
+    g_print("usage: %s <filename1> <filename2>\n", argv[0]);
+    exit(-1);
+  }
+
+  /* create input bins */
+
+  /* create bins to hold the input elements */
+  bin_in1 = gst_bin_new("bin");
+  bin_in2 = gst_bin_new("bin");
+
+  /* first input bin */
+
+  /* create elements */
+
+  disksrc1 = gst_elementfactory_make("disksrc", "disk_source1");
+  gtk_object_set(GTK_OBJECT(disksrc1),"location", argv[1],NULL);
+  gtk_signal_connect(GTK_OBJECT(disksrc1),"eos",
+                     GTK_SIGNAL_FUNC(eos),NULL);
+  decoder1 = gst_elementfactory_make("mad","decoder1");
+  volenv1 = gst_elementfactory_make("volenv", "volume1");
+
+  /* add to the bin */
+
+  gst_bin_add(GST_BIN(bin_in1), disksrc1);
+  gst_bin_add(GST_BIN(bin_in1), decoder1);
+  gst_bin_add(GST_BIN(bin_in1), volenv1);
+
+  /* connect elements */
+  gst_pad_connect(gst_element_get_pad(disksrc1,"src"),
+                  gst_element_get_pad(decoder1,"sink"));
+  gst_pad_connect(gst_element_get_pad(decoder1,"src"),
+                  gst_element_get_pad(volenv1,"sink"));
+
+  /* add a ghost pad */
+  gst_element_add_ghost_pad (bin_in1, gst_element_get_pad (volenv1, "src"), "channel1");
+
+  /* second input bin */
+
+  /* create elements */
+
+  disksrc2 = gst_elementfactory_make("disksrc", "disk_source2");
+  gtk_object_set(GTK_OBJECT(disksrc2),"location", argv[2],NULL);
+  gtk_signal_connect(GTK_OBJECT(disksrc2),"eos",
+                     GTK_SIGNAL_FUNC(eos),NULL);
+  decoder2 = gst_elementfactory_make("mad","decoder2");
+  volenv2 = gst_elementfactory_make("volenv", "volume2");
+
+  /* add to the bin */
+
+  gst_bin_add(GST_BIN(bin_in2), disksrc2);
+  gst_bin_add(GST_BIN(bin_in2), decoder2);
+  gst_bin_add(GST_BIN(bin_in2), volenv2);
+
+  /* connect elements */
+  gst_pad_connect(gst_element_get_pad(disksrc2,"src"),
+                  gst_element_get_pad(decoder2,"sink"));
+  gst_pad_connect(gst_element_get_pad(decoder2,"src"),
+                  gst_element_get_pad(volenv2,"sink"));
+
+  /* add a ghost pad */
+  gst_element_add_ghost_pad (bin_in2, gst_element_get_pad (volenv2, "src"), "channel2");
+  
+
+  /* create adder */
+  adder = gst_elementfactory_make("adder", "adderel");
+
+  /* create an audio sink */
+  audiosink = gst_elementfactory_make("esdsink", "play_audio");
+
+  /* now create main bin */
+  main_bin = gst_bin_new("bin");
+
+  gst_bin_add(GST_BIN(main_bin), bin_in1);
+  gst_bin_add(GST_BIN(main_bin), bin_in2);
+  gst_bin_add(GST_BIN(main_bin), adder);
+  gst_bin_add(GST_BIN(main_bin), audiosink);
+
+  /* request pads and connect to adder */
+
+  pad = gst_element_request_pad_by_name (adder, "sink%d");
+  g_print ("new pad %s\n", gst_pad_get_name (pad));
+  gst_pad_connect (gst_element_get_pad (bin_in1, "channel1"), pad);
+  pad = gst_element_request_pad_by_name (adder, "sink%d");
+  g_print ("new pad %s\n", gst_pad_get_name (pad));
+  gst_pad_connect (gst_element_get_pad (bin_in2, "channel2"), pad);
+
+  /* connect adder and audiosink */
+
+  gst_pad_connect(gst_element_get_pad(adder,"src"),
+                  gst_element_get_pad(audiosink,"sink"));
+
+  /* register the volume envelope */
+
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "0:0.0001", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "2:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "4:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "5:.1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "6:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "7:.1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "8:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv1), "controlpoint", "15:0.8", NULL);
+
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "0:0.001", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "4:0.001", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "5:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "6:.1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "7:1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "8:.1", NULL);
+  gtk_object_set(GTK_OBJECT(volenv2), "controlpoint", "15:0.001", NULL);
+
+  /* start playing */
+  gst_element_set_state(main_bin, GST_STATE_PLAYING);
+
+  playing = TRUE;
+
+  while (playing) {
+    gst_bin_iterate(GST_BIN(main_bin));
+  }
+
+  /* stop the bin */
+  gst_element_set_state(main_bin, GST_STATE_NULL);
+
+  gst_object_destroy(GST_OBJECT(audiosink));
+
+  gst_object_destroy(GST_OBJECT(disksrc1));
+  gst_object_destroy(GST_OBJECT(decoder1));
+  gst_object_destroy(GST_OBJECT(volenv1));
+
+  gst_object_destroy(GST_OBJECT(disksrc2));
+  gst_object_destroy(GST_OBJECT(decoder2));
+  gst_object_destroy(GST_OBJECT(volenv2));
+
+  gst_object_destroy(GST_OBJECT(bin_in1));
+  gst_object_destroy(GST_OBJECT(bin_in2));
+  gst_object_destroy(GST_OBJECT(main_bin));
+
+  exit(0);
+}
+