Added a check for sidplay

Original commit message from CVS:
Added a check for sidplay
Added a capsfilter example

configure.ac

@@ -570,8 +570,10 @@ dnl *** sidplay ***
 dnl FIXME : make this work
 translit(dnm, m, l) AM_CONDITIONAL(USE_SIDPLAY, true)
 GST_CHECK_FEATURE(SIDPLAY, [sidplay plugin], sidplay, [
-  GST_CHECK_LIBHEADER(SIDPLAY, sidplay, sidTune(), ,sidplay/sidtune.h,SIDPLAY_LIBS="-lsidplay")
+  AC_LANG_PUSH(C++)
+  AC_CHECK_HEADER(sidplay/sidtune.h, SIDPLAY_LIBS="-lsidplay", )
   AC_SUBST(SIDPLAY_LIBS)
+  AC_LANG_POP()
 ])
 
 dnl *** smoothwave ***
@@ -1011,6 +1013,7 @@ sys/v4l/Makefile
 sys/vcd/Makefile
 sys/vga/Makefile
 sys/xvideo/Makefile
+examples/capsfilter/Makefile
 ext/Makefile
 ext/a52dec/Makefile
 ext/aalib/Makefile

examples/capsfilter/Makefile.am

@@ -0,0 +1,6 @@
+noinst_PROGRAMS = capsfilter1
+
+LDADD = $(GST_LIBS)
+AM_CFLAGS = $(GST_CFLAGS)
+
+

examples/capsfilter/capsfilter1.c

@@ -0,0 +1,90 @@
+#include <gst/gst.h>
+
+/* This app uses a filter to connect colorspace and videosink
+ * so that only RGB data can pass the connection, colorspace will use
+ * a converter to convert the I420 data to RGB. Without a filter, this
+ * connection would use the I420 format (assuming Xv is enabled) */
+
+static void
+new_pad_func (GstElement *element, GstPad *newpad, gpointer data)
+{
+  GstElement *pipeline = (GstElement *) data;
+  GstElement *queue = gst_bin_get_by_name (GST_BIN (pipeline), "queue");
+
+  if (!strcmp (gst_pad_get_name (newpad), "video_00")) {
+    gst_element_set_state (pipeline, GST_STATE_PAUSED);
+    gst_pad_connect (newpad, gst_element_get_pad (queue, "sink"));
+    gst_element_set_state (pipeline, GST_STATE_PLAYING);
+  }
+}
+
+gint
+main (gint argc, gchar *argv[])
+{
+  GstElement *pipeline;
+  GstElement *filesrc;
+  GstElement *demux;
+  GstElement *thread;
+  GstElement *queue;
+  GstElement *mpeg2dec;
+  GstElement *colorspace;
+  GstElement *xvideosink;
+  gboolean res;
+
+  gst_init (&argc, &argv);
+
+  if (argc < 2) {
+    g_print ("usage: %s <mpeg1 system stream>\n", argv[0]);
+    return (-1);
+  }
+
+  pipeline = gst_pipeline_new ("main_pipeline");
+  filesrc = gst_elementfactory_make ("filesrc", "filesrc");
+  g_return_val_if_fail (filesrc, -1);
+  g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
+  demux = gst_elementfactory_make ("mpegdemux", "demux");
+  g_return_val_if_fail (demux, -1);
+  g_signal_connect (G_OBJECT (demux), "new_pad", G_CALLBACK (new_pad_func), pipeline);
+
+  thread = gst_thread_new ("thread");
+  queue = gst_elementfactory_make ("queue", "queue");
+  mpeg2dec = gst_elementfactory_make ("mpeg2dec", "mpeg2dec");
+  g_return_val_if_fail (mpeg2dec, -1);
+  colorspace = gst_elementfactory_make ("colorspace", "colorspace");
+  g_return_val_if_fail (colorspace, -1);
+  xvideosink = gst_elementfactory_make ("xvideosink", "xvideosink");
+  g_return_val_if_fail (xvideosink, -1);
+  g_object_set (G_OBJECT (xvideosink), "toplevel", TRUE, NULL);
+
+  gst_bin_add (GST_BIN (pipeline), filesrc);
+  gst_bin_add (GST_BIN (pipeline), demux);
+  
+  gst_bin_add (GST_BIN (thread), queue);
+  gst_bin_add (GST_BIN (thread), mpeg2dec);
+  gst_bin_add (GST_BIN (thread), colorspace);
+  gst_bin_add (GST_BIN (thread), xvideosink);
+  gst_bin_add (GST_BIN (pipeline), thread);
+
+  gst_element_connect (filesrc, "src", demux, "sink");
+  gst_element_connect (queue, "src", mpeg2dec, "sink");
+  gst_element_connect (mpeg2dec, "src", colorspace, "sink");
+  /* force RGB data passing between colorspace and xvideosink */
+  res = gst_element_connect_filtered (colorspace, "src", xvideosink, "sink",
+		        GST_CAPS_NEW (
+			  "filtercaps",
+			  "video/raw",
+			    "format",  GST_PROPS_FOURCC (GST_STR_FOURCC ("RGB "))
+			));
+  if (!res) {
+    g_print ("could not connect colorspace and xvideosink\n");
+    return -1;
+  }
+
+  gst_element_set_state (pipeline, GST_STATE_PLAYING);
+
+  while (gst_bin_iterate (GST_BIN (pipeline)));
+  
+  gst_element_set_state (pipeline, GST_STATE_NULL);
+
+  return 0;
+}