Correct all relevant warnings found by the sparse semantic code analyzer. This include marking several symbols static...

Original commit message from CVS:
* ext/alsa/gstalsamixertrack.c: (gst_alsa_mixer_track_get_type):
* ext/alsa/gstalsasink.c: (set_hwparams):
* ext/alsa/gstalsasrc.c: (set_hwparams):
* ext/gio/gstgio.c: (gst_gio_uri_handler_get_uri):
* ext/ogg/gstoggmux.h:
* ext/ogg/gstogmparse.c:
* gst-libs/gst/audio/audio.c:
* gst-libs/gst/fft/kiss_fft_f64.c: (kiss_fft_f64_alloc):
* gst-libs/gst/pbutils/missing-plugins.c:
(gst_missing_uri_sink_message_new),
(gst_missing_element_message_new),
(gst_missing_decoder_message_new),
(gst_missing_encoder_message_new):
* gst-libs/gst/rtp/gstbasertppayload.c:
* gst-libs/gst/rtp/gstrtcpbuffer.c:
(gst_rtcp_packet_bye_get_reason):
* gst/audioconvert/gstaudioconvert.c:
* gst/audioresample/gstaudioresample.c:
* gst/ffmpegcolorspace/imgconvert.c:
* gst/playback/test.c: (gen_video_element), (gen_audio_element):
* gst/typefind/gsttypefindfunctions.c:
* gst/videoscale/vs_4tap.c:
* gst/videoscale/vs_4tap.h:
* sys/v4l/gstv4lelement.c:
* sys/v4l/gstv4lsrc.c: (gst_v4lsrc_get_any_caps):
* sys/v4l/v4l_calls.c:
* sys/v4l/v4lsrc_calls.c: (gst_v4lsrc_capture_init),
(gst_v4lsrc_try_capture):
* sys/ximage/ximagesink.c: (gst_ximagesink_check_xshm_calls),
(gst_ximagesink_ximage_new):
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_check_xshm_calls),
(gst_xvimagesink_xvimage_new):
* tests/check/elements/audioconvert.c:
* tests/check/elements/audioresample.c:
(fail_unless_perfect_stream):
* tests/check/elements/audiotestsrc.c: (setup_audiotestsrc):
* tests/check/elements/decodebin.c:
* tests/check/elements/gdpdepay.c: (setup_gdpdepay),
(setup_gdpdepay_streamheader):
* tests/check/elements/gdppay.c: (setup_gdppay), (GST_START_TEST),
(setup_gdppay_streamheader):
* tests/check/elements/gnomevfssink.c: (setup_gnomevfssink):
* tests/check/elements/multifdsink.c: (setup_multifdsink):
* tests/check/elements/textoverlay.c:
* tests/check/elements/videorate.c: (setup_videorate):
* tests/check/elements/videotestsrc.c: (setup_videotestsrc):
* tests/check/elements/volume.c: (setup_volume):
* tests/check/elements/vorbisdec.c: (setup_vorbisdec):
* tests/check/elements/vorbistag.c:
* tests/check/generic/clock-selection.c:
* tests/check/generic/states.c: (setup), (teardown):
* tests/check/libs/cddabasesrc.c:
* tests/check/libs/video.c:
* tests/check/pipelines/gio.c:
* tests/check/pipelines/oggmux.c:
* tests/check/pipelines/simple-launch-lines.c:
(simple_launch_lines_suite):
* tests/check/pipelines/streamheader.c:
* tests/check/pipelines/theoraenc.c:
* tests/check/pipelines/vorbisdec.c:
* tests/check/pipelines/vorbisenc.c:
* tests/examples/seek/scrubby.c:
* tests/examples/seek/seek.c: (query_positions_elems),
(query_positions_pads):
* tests/icles/stress-xoverlay.c: (myclock):
Correct all relevant warnings found by the sparse semantic code
analyzer. This include marking several symbols static, using
NULL instead of 0 for pointers and using "foo (void)" instead
of "foo ()" for declarations.
* win32/common/libgstrtp.def:
Add gst_rtp_buffer_set_extension_data to the symbol definition file.

tests/check/elements/gdpdepay.c

@@ -25,12 +25,10 @@
 #include <gst/check/gstcheck.h>
 #include <gst/dataprotocol/dataprotocol.h>
 
-gboolean have_eos = FALSE;
-
 /* For ease of programming we use globals to keep refs for our floating
  * src and sink pads we create; otherwise we always have to do get_pad,
  * get_peer, and then remove references in every test function */
-GstPad *mysrcpad, *mysinkpad, *myshsinkpad;
+static GstPad *mysrcpad, *mysinkpad, *myshsinkpad;
 
 #define AUDIO_CAPS_TEMPLATE_STRING \
   "audio/x-raw-int, " \
@@ -63,8 +61,8 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     );
 
 /* takes over reference for outcaps */
-GstElement *
-setup_gdpdepay ()
+static GstElement *
+setup_gdpdepay (void)
 {
   GstElement *gdpdepay;
 
@@ -78,7 +76,7 @@ setup_gdpdepay ()
   return gdpdepay;
 }
 
-void
+static void
 cleanup_gdpdepay (GstElement * gdpdepay)
 {
   GST_DEBUG ("cleanup_gdpdepay");
@@ -266,8 +264,8 @@ static GstStaticPadTemplate shsinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_STATIC_CAPS ("application/x-gst-test-streamheader")
     );
 
-GstElement *
-setup_gdpdepay_streamheader ()
+static GstElement *
+setup_gdpdepay_streamheader (void)
 {
   GstElement *gdpdepay;
 
@@ -402,7 +400,7 @@ GST_END_TEST;
 
 #endif /* ifndef HAVE_CPU_PPC64 */
 
-Suite *
+static Suite *
 gdpdepay_suite (void)
 {
   Suite *s = suite_create ("gdpdepay");

tests/check/elements/gdppay.c

@@ -24,12 +24,10 @@
 #include <gst/check/gstcheck.h>
 #include <gst/dataprotocol/dataprotocol.h>
 
-gboolean have_eos = FALSE;
-
 /* For ease of programming we use globals to keep refs for our floating
  * src and sink pads we create; otherwise we always have to do get_pad,
  * get_peer, and then remove references in every test function */
-GstPad *mysrcpad, *myshsrcpad, *mysinkpad;
+static GstPad *mysrcpad, *myshsrcpad, *mysinkpad;
 
 #define AUDIO_CAPS_TEMPLATE_STRING \
   "audio/x-raw-int, " \
@@ -62,8 +60,8 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     );
 
 /* takes over reference for outcaps */
-GstElement *
-setup_gdppay ()
+static GstElement *
+setup_gdppay (void)
 {
   GstElement *gdppay;
 
@@ -77,7 +75,7 @@ setup_gdppay ()
   return gdppay;
 }
 
-void
+static void
 cleanup_gdppay (GstElement * gdppay)
 {
   GST_DEBUG ("cleanup_gdppay");
@@ -204,7 +202,7 @@ GST_START_TEST (test_audio)
   g_list_free (buffers);
   buffers = NULL;
   ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
-  gst_object_unref (gdppay);
+  cleanup_gdppay (gdppay);
 }
 
 GST_END_TEST;
@@ -216,8 +214,8 @@ static GstStaticPadTemplate shsrctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     );
 
 
-GstElement *
-setup_gdppay_streamheader ()
+static GstElement *
+setup_gdppay_streamheader (void)
 {
   GstElement *gdppay;
 
@@ -378,7 +376,7 @@ GST_START_TEST (test_streamheader)
   g_list_free (buffers);
   buffers = NULL;
   ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
-  gst_object_unref (gdppay);
+  cleanup_gdppay (gdppay);
 }
 
 GST_END_TEST;
@@ -411,7 +409,7 @@ GST_START_TEST (test_first_no_caps)
   g_list_free (buffers);
   buffers = NULL;
   ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
-  gst_object_unref (gdppay);
+  cleanup_gdppay (gdppay);
 }
 
 GST_END_TEST;
@@ -434,6 +432,7 @@ GST_START_TEST (test_first_no_new_segment)
   inbuffer = gst_buffer_new_and_alloc (4);
   caps = gst_caps_from_string (AUDIO_CAPS_STRING);
   gst_buffer_set_caps (inbuffer, caps);
+  gst_caps_unref (caps);
 
   ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
 
@@ -452,7 +451,7 @@ GST_START_TEST (test_first_no_new_segment)
   g_list_free (buffers);
   buffers = NULL;
   ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
-  gst_object_unref (gdppay);
+  cleanup_gdppay (gdppay);
 }
 
 GST_END_TEST;
@@ -542,13 +541,13 @@ GST_START_TEST (test_crc)
   g_list_free (buffers);
   buffers = NULL;
   ASSERT_OBJECT_REFCOUNT (gdppay, "gdppay", 1);
-  gst_object_unref (gdppay);
+  cleanup_gdppay (gdppay);
 }
 
 GST_END_TEST;
 
 
-Suite *
+static Suite *
 gdppay_suite (void)
 {
   Suite *s = suite_create ("gdppay");

tests/check/pipelines/streamheader.c

@@ -36,7 +36,7 @@
 
 static int n_tags = 0;
 
-gboolean
+static gboolean
 tag_event_probe_cb (GstPad * pad, GstEvent * event, GMainLoop * loop)
 {
   switch (GST_EVENT_TYPE (event)) {
@@ -113,7 +113,7 @@ GST_END_TEST;
 
 static int n_in_caps = 0;
 
-gboolean
+static gboolean
 buffer_probe_cb (GstPad * pad, GstBuffer * buffer)
 {
   if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_IN_CAPS)) {
@@ -208,7 +208,7 @@ GST_END_TEST;
 
 #endif /* #ifndef GST_DISABLE_PARSE */
 
-Suite *
+static Suite *
 streamheader_suite (void)
 {
   Suite *s = suite_create ("streamheader");