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.

53 files changed, 261 insertions, 188 deletions

diff --git a/ChangeLog b/ChangeLog
index 578b3e69..f08df9e3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,78 @@
+2008-03-03  Sebastian Dröge  <slomo@circular-chaos.org>
+
+	* 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.
+
 2008-03-02  Tim-Philipp Müller  <tim at centricular dot net>
 
 	Patch by: José Alburquerque <jaalburqu svn gnome org>
diff --git a/ext/alsa/gstalsamixertrack.c b/ext/alsa/gstalsamixertrack.c
index 90f3fee5..12831b5b 100644
--- a/ext/alsa/gstalsamixertrack.c
+++ b/ext/alsa/gstalsamixertrack.c
@@ -47,7 +47,7 @@ gst_alsa_mixer_track_get_type (void)
       sizeof (GstAlsaMixerTrack),
       0,
       (GInstanceInitFunc) gst_alsa_mixer_track_init,
-      0
+      NULL
     };
 
     track_type =
diff --git a/ext/alsa/gstalsasink.c b/ext/alsa/gstalsasink.c
index 1e90108c..63c4e7fb 100644
--- a/ext/alsa/gstalsasink.c
+++ b/ext/alsa/gstalsasink.c
@@ -371,7 +371,7 @@ retry:
       no_channels);
   /* set the stream rate */
   rrate = alsa->rate;
-  CHECK (snd_pcm_hw_params_set_rate_near (alsa->handle, params, &rrate, 0),
+  CHECK (snd_pcm_hw_params_set_rate_near (alsa->handle, params, &rrate, NULL),
       no_rate);
   if (rrate != alsa->rate)
     goto rate_match;
diff --git a/ext/alsa/gstalsasrc.c b/ext/alsa/gstalsasrc.c
index 806e0442..b9464b2f 100644
--- a/ext/alsa/gstalsasrc.c
+++ b/ext/alsa/gstalsasrc.c
@@ -363,7 +363,7 @@ set_hwparams (GstAlsaSrc * alsa)
       no_channels);
   /* set the stream rate */
   rrate = alsa->rate;
-  CHECK (snd_pcm_hw_params_set_rate_near (alsa->handle, params, &rrate, 0),
+  CHECK (snd_pcm_hw_params_set_rate_near (alsa->handle, params, &rrate, NULL),
       no_rate);
   if (rrate != alsa->rate)
     goto rate_match;
diff --git a/ext/gio/gstgio.c b/ext/gio/gstgio.c
index cfe41db8..6420d536 100644
--- a/ext/gio/gstgio.c
+++ b/ext/gio/gstgio.c
@@ -127,7 +127,7 @@ gst_gio_uri_handler_get_uri (GstURIHandler * handler)
   GstElement *element = GST_ELEMENT (handler);
   const gchar *uri;
 
-  g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
+  g_return_val_if_fail (GST_IS_ELEMENT (element), NULL);
 
   g_object_get (G_OBJECT (element), "location", &uri, NULL);
 
diff --git a/ext/ogg/gstoggmux.h b/ext/ogg/gstoggmux.h
index 7564fbe9..5a510c03 100644
--- a/ext/ogg/gstoggmux.h
+++ b/ext/ogg/gstoggmux.h
@@ -122,6 +122,8 @@ struct _GstOggMuxClass
   GstElementClass parent_class;
 };
 
+GType gst_ogg_mux_get_type (void);
+
 G_END_DECLS
 
 #endif /* __GST_OGG_MUX_H__ */
diff --git a/ext/ogg/gstogmparse.c b/ext/ogg/gstogmparse.c
index e4acdcd0..cdf3c752 100644
--- a/ext/ogg/gstogmparse.c
+++ b/ext/ogg/gstogmparse.c
@@ -231,7 +231,7 @@ gst_ogm_audio_parse_get_type (void)
   return ogm_audio_parse_type;
 }
 
-GType
+static GType
 gst_ogm_video_parse_get_type (void)
 {
   static GType ogm_video_parse_type = 0;
@@ -257,7 +257,7 @@ gst_ogm_video_parse_get_type (void)
   return ogm_video_parse_type;
 }
 
-GType
+static GType
 gst_ogm_text_parse_get_type (void)
 {
   static GType ogm_text_parse_type = 0;
diff --git a/gst-libs/gst/audio/audio.c b/gst-libs/gst/audio/audio.c
index 86888b74..99425d82 100644
--- a/gst-libs/gst/audio/audio.c
+++ b/gst-libs/gst/audio/audio.c
@@ -239,6 +239,7 @@ typedef enum
   GST_AUDIO_FIELD_SIGNED = (1 << 5),
 } GstAudioFieldFlag;
 #endif /* GST_DISABLE_DEPRECATED */
+
 void
 gst_audio_structure_set_int (GstStructure * structure, GstAudioFieldFlag flag)
 {
diff --git a/gst-libs/gst/fft/kiss_fft_f64.c b/gst-libs/gst/fft/kiss_fft_f64.c
index c75a4a0b..4f0cbc5a 100644
--- a/gst-libs/gst/fft/kiss_fft_f64.c
+++ b/gst-libs/gst/fft/kiss_fft_f64.c
@@ -344,6 +344,8 @@ kiss_fft_f64_cfg
 kiss_fft_f64_alloc (int nfft, int inverse_fft, void *mem, size_t * lenmem)
 {
   kiss_fft_f64_cfg st = NULL;
+  const double pi =
+      3.141592653589793238462643383279502884197169399375105820974944;
   size_t memneeded = sizeof (struct kiss_fft_f64_state)
       + sizeof (kiss_fft_f64_cpx) * (nfft - 1); /* twiddle factors */
 
@@ -361,8 +363,6 @@ kiss_fft_f64_alloc (int nfft, int inverse_fft, void *mem, size_t * lenmem)
     st->inverse = inverse_fft;
 
     for (i = 0; i < nfft; ++i) {
-      const double pi =
-          3.141592653589793238462643383279502884197169399375105820974944;
       double phase = -2 * pi * i / nfft;
 
       if (st->inverse)
diff --git a/gst-libs/gst/pbutils/missing-plugins.c b/gst-libs/gst/pbutils/missing-plugins.c
index 18c1eff5..6b7693ed 100644
--- a/gst-libs/gst/pbutils/missing-plugins.c
+++ b/gst-libs/gst/pbutils/missing-plugins.c
@@ -202,9 +202,9 @@ gst_missing_uri_sink_message_new (GstElement * element, const gchar * protocol)
   GstStructure *s;
   gchar *description;
 
-  g_return_val_if_fail (element != NULL, FALSE);
-  g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
-  g_return_val_if_fail (protocol != NULL, FALSE);
+  g_return_val_if_fail (element != NULL, NULL);
+  g_return_val_if_fail (GST_IS_ELEMENT (element), NULL);
+  g_return_val_if_fail (protocol != NULL, NULL);
 
   description = gst_pb_utils_get_sink_description (protocol);
 
@@ -235,9 +235,9 @@ gst_missing_element_message_new (GstElement * element,
   GstStructure *s;
   gchar *description;
 
-  g_return_val_if_fail (element != NULL, FALSE);
-  g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
-  g_return_val_if_fail (factory_name != NULL, FALSE);
+  g_return_val_if_fail (element != NULL, NULL);
+  g_return_val_if_fail (GST_IS_ELEMENT (element), NULL);
+  g_return_val_if_fail (factory_name != NULL, NULL);
 
   description = gst_pb_utils_get_element_description (factory_name);
 
@@ -268,13 +268,13 @@ gst_missing_decoder_message_new (GstElement * element,
   GstCaps *caps;
   gchar *description;
 
-  g_return_val_if_fail (element != NULL, FALSE);
-  g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
-  g_return_val_if_fail (decode_caps != NULL, FALSE);
-  g_return_val_if_fail (GST_IS_CAPS (decode_caps), FALSE);
-  g_return_val_if_fail (!gst_caps_is_any (decode_caps), FALSE);
-  g_return_val_if_fail (!gst_caps_is_empty (decode_caps), FALSE);
-  g_return_val_if_fail (gst_caps_is_fixed (decode_caps), FALSE);
+  g_return_val_if_fail (element != NULL, NULL);
+  g_return_val_if_fail (GST_IS_ELEMENT (element), NULL);
+  g_return_val_if_fail (decode_caps != NULL, NULL);
+  g_return_val_if_fail (GST_IS_CAPS (decode_caps), NULL);
+  g_return_val_if_fail (!gst_caps_is_any (decode_caps), NULL);
+  g_return_val_if_fail (!gst_caps_is_empty (decode_caps), NULL);
+  g_return_val_if_fail (gst_caps_is_fixed (decode_caps), NULL);
 
   description = gst_pb_utils_get_decoder_description (decode_caps);
   caps = copy_and_clean_caps (decode_caps);
@@ -308,13 +308,13 @@ gst_missing_encoder_message_new (GstElement * element,
   GstCaps *caps;
   gchar *description;
 
-  g_return_val_if_fail (element != NULL, FALSE);
-  g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
-  g_return_val_if_fail (encode_caps != NULL, FALSE);
-  g_return_val_if_fail (GST_IS_CAPS (encode_caps), FALSE);
-  g_return_val_if_fail (!gst_caps_is_any (encode_caps), FALSE);
-  g_return_val_if_fail (!gst_caps_is_empty (encode_caps), FALSE);
-  g_return_val_if_fail (gst_caps_is_fixed (encode_caps), FALSE);
+  g_return_val_if_fail (element != NULL, NULL);
+  g_return_val_if_fail (GST_IS_ELEMENT (element), NULL);
+  g_return_val_if_fail (encode_caps != NULL, NULL);
+  g_return_val_if_fail (GST_IS_CAPS (encode_caps), NULL);
+  g_return_val_if_fail (!gst_caps_is_any (encode_caps), NULL);
+  g_return_val_if_fail (!gst_caps_is_empty (encode_caps), NULL);
+  g_return_val_if_fail (gst_caps_is_fixed (encode_caps), NULL);
 
   description = gst_pb_utils_get_encoder_description (encode_caps);
   caps = copy_and_clean_caps (encode_caps);
diff --git a/gst-libs/gst/rtp/gstbasertppayload.c b/gst-libs/gst/rtp/gstbasertppayload.c
index 5399c8f1..aa347e73 100644
--- a/gst-libs/gst/rtp/gstbasertppayload.c
+++ b/gst-libs/gst/rtp/gstbasertppayload.c
@@ -438,7 +438,7 @@ gst_basertppayload_set_options (GstBaseRTPPayload * payload,
   payload->clock_rate = clock_rate;
 }
 
-gboolean
+static gboolean
 copy_fixed (GQuark field_id, const GValue * value, GstStructure * dest)
 {
   if (gst_value_is_fixed (value)) {
diff --git a/gst-libs/gst/rtp/gstrtcpbuffer.c b/gst-libs/gst/rtp/gstrtcpbuffer.c
index 6804531b..787174a3 100644
--- a/gst-libs/gst/rtp/gstrtcpbuffer.c
+++ b/gst-libs/gst/rtp/gstrtcpbuffer.c
@@ -1533,7 +1533,7 @@ gst_rtcp_packet_bye_get_reason (GstRTCPPacket * packet)
   guint8 len;
 
   g_return_val_if_fail (packet != NULL, NULL);
-  g_return_val_if_fail (packet->type == GST_RTCP_TYPE_BYE, 0);
+  g_return_val_if_fail (packet->type == GST_RTCP_TYPE_BYE, NULL);
   g_return_val_if_fail (GST_IS_BUFFER (packet->buffer), NULL);
 
   roffset = get_reason_offset (packet);
diff --git a/gst/audioconvert/gstaudioconvert.c b/gst/audioconvert/gstaudioconvert.c
index bcbb0ea5..5b67079c 100644
--- a/gst/audioconvert/gstaudioconvert.c
+++ b/gst/audioconvert/gstaudioconvert.c
@@ -723,7 +723,7 @@ static const GstAudioChannelPosition default_positions[8][8] = {
       }
 };
 
-const GValue *
+static const GValue *
 find_suitable_channel_layout (const GValue * val, guint chans)
 {
   /* if output layout is fixed already and looks sane, we're done */
diff --git a/gst/audioresample/gstaudioresample.c b/gst/audioresample/gstaudioresample.c
index ebcd1ea6..2ff585c8 100644
--- a/gst/audioresample/gstaudioresample.c
+++ b/gst/audioresample/gstaudioresample.c
@@ -50,7 +50,7 @@
 #include <gst/audio/audio.h>
 #include <gst/base/gstbasetransform.h>
 
-GST_DEBUG_CATEGORY (audioresample_debug);
+GST_DEBUG_CATEGORY_STATIC (audioresample_debug);
 #define GST_CAT_DEFAULT audioresample_debug
 
 /* elementfactory information */
diff --git a/gst/ffmpegcolorspace/imgconvert.c b/gst/ffmpegcolorspace/imgconvert.c
index c73e16b4..b7d47cbc 100644
--- a/gst/ffmpegcolorspace/imgconvert.c
+++ b/gst/ffmpegcolorspace/imgconvert.c
@@ -439,7 +439,8 @@ avcodec_get_pix_fmt (const char *name)
   return pix_fmt_info[i].format;
 }
 
-int
+#if 0
+static int
 avpicture_layout (const AVPicture * src, int pix_fmt, int width, int height,
     unsigned char *dest, int dest_size)
 {
@@ -490,6 +491,7 @@ avpicture_layout (const AVPicture * src, int pix_fmt, int width, int height,
 
   return size;
 }
+#endif
 
 int
 avpicture_get_size (int pix_fmt, int width, int height)
@@ -670,7 +672,7 @@ img_copy_plane (uint8_t * dst, int dst_wrap,
 /**
  * Copy image 'src' to 'dst'.
  */
-void
+static void
 img_copy (AVPicture * dst, const AVPicture * src,
     int pix_fmt, int width, int height)
 {
@@ -2198,7 +2200,7 @@ get_convert_table_entry (int src_pix_fmt, int dst_pix_fmt)
   return NULL;
 }
 
-int
+static int
 avpicture_alloc (AVPicture * picture, int pix_fmt, int width, int height)
 {
   unsigned int size;
@@ -2215,7 +2217,7 @@ fail:
   return -1;
 }
 
-void
+static void
 avpicture_free (AVPicture * picture)
 {
   av_free (picture->data[0]);
@@ -2593,6 +2595,7 @@ img_get_alpha_info (const AVPicture * src, int pix_fmt, int width, int height)
 #endif
 
 /* filter parameters: [-1 4 2 4 -1] // 8 */
+#if 0
 static void
 deinterlace_line (uint8_t * dst,
     const uint8_t * lum_m4, const uint8_t * lum_m3,
@@ -2684,10 +2687,12 @@ deinterlace_line_inplace (uint8_t * lum_m4, uint8_t * lum_m3, uint8_t * lum_m2,
   }
 #endif
 }
+#endif
 
 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
    top field is copied as is, but the bottom field is deinterlaced
    against the top field. */
+#if 0
 static void
 deinterlace_bottom_field (uint8_t * dst, int dst_wrap,
     const uint8_t * src1, int src_wrap, int width, int height)
@@ -2743,10 +2748,11 @@ deinterlace_bottom_field_inplace (uint8_t * src1, int src_wrap,
   deinterlace_line_inplace (buf, src_m1, src_0, src_0, src_0, width);
   av_free (buf);
 }
-
+#endif
 
 /* deinterlace - if not supported return -1 */
-int
+#if 0
+static int
 avpicture_deinterlace (AVPicture * dst, const AVPicture * src,
     int pix_fmt, int width, int height)
 {
@@ -2789,5 +2795,6 @@ avpicture_deinterlace (AVPicture * dst, const AVPicture * src,
 #endif
   return 0;
 }
+#endif
 
 #undef FIX
diff --git a/gst/playback/test.c b/gst/playback/test.c
index 0d368382..7117b630 100644
--- a/gst/playback/test.c
+++ b/gst/playback/test.c
@@ -27,7 +27,7 @@
 static GMainLoop *loop;
 
 static GstElement *
-gen_video_element ()
+gen_video_element (void)
 {
   GstElement *element;
   GstElement *conv;
@@ -50,7 +50,7 @@ gen_video_element ()
 }
 
 static GstElement *
-gen_audio_element ()
+gen_audio_element (void)
 {
   GstElement *element;
   GstElement *conv;
diff --git a/gst/typefind/gsttypefindfunctions.c b/gst/typefind/gsttypefindfunctions.c
index a735a4f8..bf8cbba5 100644
--- a/gst/typefind/gsttypefindfunctions.c
+++ b/gst/typefind/gsttypefindfunctions.c
@@ -1421,7 +1421,7 @@ static GstStaticCaps mpegts_caps = GST_STATIC_CAPS ("video/mpegts, "
 
 /* Helper function to search ahead at intervals of packet_size for mpegts
  * headers */
-gint
+static gint
 mpeg_ts_probe_headers (GstTypeFind * tf, guint64 offset, gint packet_size)
 {
   /* We always enter this function having found at least one header already */
diff --git a/gst/videoscale/vs_4tap.c b/gst/videoscale/vs_4tap.c
index 97e79b0b..b2548207 100644
--- a/gst/videoscale/vs_4tap.c
+++ b/gst/videoscale/vs_4tap.c
@@ -28,6 +28,8 @@
 #include "vs_image.h"
 #include "vs_scanline.h"
 
+#include "vs_4tap.h"
+
 #include <liboil/liboil.h>
 #include <math.h>
 
@@ -45,9 +47,9 @@
 #define rint(x) (floor((x)+0.5))
 #endif
 
-int16_t vs_4tap_taps[256][4];
+static int16_t vs_4tap_taps[256][4];
 
-double
+static double
 vs_4tap_func (double x)
 {
 #if 0
diff --git a/gst/videoscale/vs_4tap.h b/gst/videoscale/vs_4tap.h
index 830441ae..aae3850e 100644
--- a/gst/videoscale/vs_4tap.h
+++ b/gst/videoscale/vs_4tap.h
@@ -34,7 +34,7 @@
 
 void vs_4tap_init (void);
 void vs_scanline_resample_4tap_Y (uint8_t *dest, uint8_t *src,
-    int n, int *xacc, int increment);
+    int n, int src_width, int *xacc, int increment);
 void vs_scanline_merge_4tap_Y (uint8_t *dest, uint8_t *src1, uint8_t *src2,
     uint8_t *src3, uint8_t *src4, int n, int acc);
 void vs_image_scale_4tap_Y (const VSImage * dest, const VSImage * src,
diff --git a/sys/v4l/gstv4lelement.c b/sys/v4l/gstv4lelement.c
index c9c9621a..1f04d8f7 100644
--- a/sys/v4l/gstv4lelement.c
+++ b/sys/v4l/gstv4lelement.c
@@ -245,7 +245,7 @@ gst_v4l_property_probe_interface_init (GstPropertyProbeInterface * iface)
 }
 
 #define GST_TYPE_V4L_DEVICE_FLAGS (gst_v4l_device_get_type ())
-GType
+static GType
 gst_v4l_device_get_type (void)
 {
   static GType v4l_device_type = 0;
diff --git a/sys/v4l/gstv4lsrc.c b/sys/v4l/gstv4lsrc.c
index 6e410e9f..802e9e6c 100644
--- a/sys/v4l/gstv4lsrc.c
+++ b/sys/v4l/gstv4lsrc.c
@@ -349,7 +349,7 @@ gst_v4lsrc_palette_to_caps (int palette)
 }
 
 static GstCaps *
-gst_v4lsrc_get_any_caps ()
+gst_v4lsrc_get_any_caps (void)
 {
   gint i;
   GstCaps *caps = gst_caps_new_empty (), *one;
diff --git a/sys/v4l/v4l_calls.c b/sys/v4l/v4l_calls.c
index 285ac26e..4d336d4f 100644
--- a/sys/v4l/v4l_calls.c
+++ b/sys/v4l/v4l_calls.c
@@ -277,7 +277,7 @@ gst_v4l_close (GstV4lElement * v4lelement)
  * return value: the number of video input channels
  ******************************************************/
 
-gint
+static gint
 gst_v4l_get_num_chans (GstV4lElement * v4lelement)
 {
   GST_DEBUG_OBJECT (v4lelement, "getting number of channels");
diff --git a/sys/v4l/v4lsrc_calls.c b/sys/v4l/v4lsrc_calls.c
index a110c161..54bf55f8 100644
--- a/sys/v4l/v4lsrc_calls.c
+++ b/sys/v4l/v4lsrc_calls.c
@@ -49,7 +49,7 @@ GST_DEBUG_CATEGORY_EXTERN (v4l_debug);
 
 #ifndef GST_DISABLE_GST_DEBUG
 /* palette names */
-const char *v4l_palette_name[] = {
+static const char *v4l_palette_name[] = {
   "",                           /* 0 */
   "grayscale",                  /* VIDEO_PALETTE_GREY */
   "Hi-420",                     /* VIDEO_PALETTE_HI420 */
@@ -197,7 +197,7 @@ gst_v4lsrc_capture_init (GstV4lSrc * v4lsrc)
   v4lsrc->cond_queue_state = g_cond_new ();
 
   /* Map the buffers */
-  GST_V4LELEMENT (v4lsrc)->buffer = mmap (0, v4lsrc->mbuf.size,
+  GST_V4LELEMENT (v4lsrc)->buffer = mmap (NULL, v4lsrc->mbuf.size,
       PROT_READ | PROT_WRITE, MAP_SHARED, GST_V4LELEMENT (v4lsrc)->video_fd, 0);
   if (GST_V4LELEMENT (v4lsrc)->buffer == MAP_FAILED) {
     GST_ELEMENT_ERROR (v4lsrc, RESOURCE, OPEN_READ_WRITE, (NULL),
@@ -461,7 +461,7 @@ gst_v4lsrc_try_capture (GstV4lSrc * v4lsrc, gint width, gint height,
     return FALSE;
   }
   /* Map the buffers */
-  buffer = mmap (0, vmbuf.size, PROT_READ | PROT_WRITE,
+  buffer = mmap (NULL, vmbuf.size, PROT_READ | PROT_WRITE,
       MAP_SHARED, GST_V4LELEMENT (v4lsrc)->video_fd, 0);
   if (buffer == MAP_FAILED) {
     GST_ELEMENT_ERROR (v4lsrc, RESOURCE, OPEN_READ_WRITE, (NULL),
@@ -634,7 +634,7 @@ static void gst_v4lsrc_buffer_finalize (GstV4lSrcBuffer * v4lsrc_buffer);
 
 static GstBufferClass *v4lbuffer_parent_class = NULL;
 
-GType
+static GType
 gst_v4lsrc_buffer_get_type (void)
 {
   static GType _gst_v4lsrc_buffer_type;
diff --git a/sys/ximage/ximagesink.c b/sys/ximage/ximagesink.c
index d6757f88..5d9bd3f7 100644
--- a/sys/ximage/ximagesink.c
+++ b/sys/ximage/ximagesink.c
@@ -275,7 +275,7 @@ gst_ximage_buffer_class_init (gpointer g_class, gpointer class_data)
       gst_ximage_buffer_finalize;
 }
 
-GType
+static GType
 gst_ximage_buffer_get_type (void)
 {
   static GType _gst_ximage_buffer_type;
@@ -361,18 +361,18 @@ gst_ximagesink_check_xshm_calls (GstXImageSink * ximagesink,
     goto beach;
   }
 
-  SHMInfo.shmaddr = shmat (SHMInfo.shmid, 0, 0);
+  SHMInfo.shmaddr = shmat (SHMInfo.shmid, NULL, 0);
   if (SHMInfo.shmaddr == ((void *) -1)) {
     GST_WARNING ("Failed to shmat: %s", g_strerror (errno));
     /* Clean up shm seg */
-    shmctl (SHMInfo.shmid, IPC_RMID, 0);
+    shmctl (SHMInfo.shmid, IPC_RMID, NULL);
     goto beach;
   }
 
   /* Delete the shared memory segment as soon as we manage to attach. 
    * This way, it will be deleted as soon as we detach later, and not
    * leaked if we crash. */
-  shmctl (SHMInfo.shmid, IPC_RMID, 0);
+  shmctl (SHMInfo.shmid, IPC_RMID, NULL);
 
   ximage->data = SHMInfo.shmaddr;
   SHMInfo.readOnly = FALSE;
@@ -476,7 +476,7 @@ gst_ximagesink_ximage_new (GstXImageSink * ximagesink, GstCaps * caps)
       goto beach;
     }
 
-    ximage->SHMInfo.shmaddr = shmat (ximage->SHMInfo.shmid, 0, 0);
+    ximage->SHMInfo.shmaddr = shmat (ximage->SHMInfo.shmid, NULL, 0);
     if (ximage->SHMInfo.shmaddr == ((void *) -1)) {
       g_mutex_unlock (ximagesink->x_lock);
       GST_ELEMENT_ERROR (ximagesink, RESOURCE, WRITE,
@@ -484,14 +484,14 @@ gst_ximagesink_ximage_new (GstXImageSink * ximagesink, GstCaps * caps)
               ximage->width, ximage->height),
           ("Failed to shmat: %s", g_strerror (errno)));
       /* Clean up the shared memory segment */
-      shmctl (ximage->SHMInfo.shmid, IPC_RMID, 0);
+      shmctl (ximage->SHMInfo.shmid, IPC_RMID, NULL);
       goto beach;
     }
 
     /* Now that we've attached, we can delete the shared memory segment.
      * This way, it will be deleted as soon as we detach later, and not
      * leaked if we crash. */
-    shmctl (ximage->SHMInfo.shmid, IPC_RMID, 0);
+    shmctl (ximage->SHMInfo.shmid, IPC_RMID, NULL);
 
     ximage->ximage->data = ximage->SHMInfo.shmaddr;
     ximage->SHMInfo.readOnly = FALSE;
diff --git a/sys/xvimage/xvimagesink.c b/sys/xvimage/xvimagesink.c
index c9b63b57..92ac60df 100644
--- a/sys/xvimage/xvimagesink.c
+++ b/sys/xvimage/xvimagesink.c
@@ -369,7 +369,7 @@ gst_xvimage_buffer_class_init (gpointer g_class, gpointer class_data)
       gst_xvimage_buffer_finalize;
 }
 
-GType
+static GType
 gst_xvimage_buffer_get_type (void)
 {
   static GType _gst_xvimage_buffer_type;
@@ -453,18 +453,18 @@ gst_xvimagesink_check_xshm_calls (GstXContext * xcontext)
     goto beach;
   }
 
-  SHMInfo.shmaddr = shmat (SHMInfo.shmid, 0, 0);
+  SHMInfo.shmaddr = shmat (SHMInfo.shmid, NULL, 0);
   if (SHMInfo.shmaddr == ((void *) -1)) {
     GST_WARNING ("Failed to shmat: %s", g_strerror (errno));
     /* Clean up the shared memory segment */
-    shmctl (SHMInfo.shmid, IPC_RMID, 0);
+    shmctl (SHMInfo.shmid, IPC_RMID, NULL);
     goto beach;
   }
 
   /* Delete the shared memory segment as soon as we manage to attach.
    * This way, it will be deleted as soon as we detach later, and not
    * leaked if we crash. */
-  shmctl (SHMInfo.shmid, IPC_RMID, 0);
+  shmctl (SHMInfo.shmid, IPC_RMID, NULL);
 
   xvimage->data = SHMInfo.shmaddr;
   SHMInfo.readOnly = FALSE;
@@ -623,7 +623,7 @@ gst_xvimagesink_xvimage_new (GstXvImageSink * xvimagesink, GstCaps * caps)
       goto beach_unlocked;
     }
 
-    xvimage->SHMInfo.shmaddr = shmat (xvimage->SHMInfo.shmid, 0, 0);
+    xvimage->SHMInfo.shmaddr = shmat (xvimage->SHMInfo.shmid, NULL, 0);
     if (xvimage->SHMInfo.shmaddr == ((void *) -1)) {
       g_mutex_unlock (xvimagesink->x_lock);
       GST_ELEMENT_ERROR (xvimagesink, RESOURCE, WRITE,
@@ -631,14 +631,14 @@ gst_xvimagesink_xvimage_new (GstXvImageSink * xvimagesink, GstCaps * caps)
               xvimage->width, xvimage->height),
           ("Failed to shmat: %s", g_strerror (errno)));
       /* Clean up the shared memory segment */
-      shmctl (xvimage->SHMInfo.shmid, IPC_RMID, 0);
+      shmctl (xvimage->SHMInfo.shmid, IPC_RMID, NULL);
       goto beach_unlocked;
     }
 
     /* Delete the shared memory segment as soon as we manage to attach.
      * This way, it will be deleted as soon as we detach later, and not
      * leaked if we crash. */
-    shmctl (xvimage->SHMInfo.shmid, IPC_RMID, 0);
+    shmctl (xvimage->SHMInfo.shmid, IPC_RMID, NULL);
 
     xvimage->xvimage->data = xvimage->SHMInfo.shmaddr;
     xvimage->SHMInfo.readOnly = FALSE;
diff --git a/tests/check/elements/audioconvert.c b/tests/check/elements/audioconvert.c
index 5624a91f..c61d7e9b 100644
--- a/tests/check/elements/audioconvert.c
+++ b/tests/check/elements/audioconvert.c
@@ -26,12 +26,10 @@
 #include <gst/check/gstcheck.h>
 #include <gst/audio/multichannel.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;
+static GstPad *mysrcpad, *mysinkpad;
 
 #define CONVERT_CAPS_TEMPLATE_STRING    \
   "audio/x-raw-float, " \
@@ -80,7 +78,7 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     );
 
 /* takes over reference for outcaps */
-GstElement *
+static GstElement *
 setup_audioconvert (GstCaps * outcaps)
 {
   GstElement *audioconvert;
@@ -106,7 +104,7 @@ setup_audioconvert (GstCaps * outcaps)
   return audioconvert;
 }
 
-void
+static void
 cleanup_audioconvert (GstElement * audioconvert)
 {
   GST_DEBUG ("cleanup_audioconvert");
@@ -850,7 +848,7 @@ GST_START_TEST (test_caps_negotiation)
 GST_END_TEST;
 
 
-Suite *
+static Suite *
 audioconvert_suite (void)
 {
   Suite *s = suite_create ("audioconvert");
diff --git a/tests/check/elements/audioresample.c b/tests/check/elements/audioresample.c
index 4fc18636..4145be19 100644
--- a/tests/check/elements/audioresample.c
+++ b/tests/check/elements/audioresample.c
@@ -25,12 +25,10 @@
 
 #include <gst/check/gstcheck.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;
+static GstPad *mysrcpad, *mysinkpad;
 
 
 #define RESAMPLE_CAPS_TEMPLATE_STRING   \
@@ -53,7 +51,7 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_STATIC_CAPS (RESAMPLE_CAPS_TEMPLATE_STRING)
     );
 
-GstElement *
+static GstElement *
 setup_audioresample (int channels, int inrate, int outrate)
 {
   GstElement *audioresample;
@@ -100,7 +98,7 @@ setup_audioresample (int channels, int inrate, int outrate)
   return audioresample;
 }
 
-void
+static void
 cleanup_audioresample (GstElement * audioresample)
 {
   GST_DEBUG ("cleanup_audioresample");
@@ -116,7 +114,7 @@ cleanup_audioresample (GstElement * audioresample)
 }
 
 static void
-fail_unless_perfect_stream ()
+fail_unless_perfect_stream (void)
 {
   guint64 timestamp = 0L, duration = 0L;
   guint64 offset = 0L, offset_end = 0L;
diff --git a/tests/check/elements/audiotestsrc.c b/tests/check/elements/audiotestsrc.c
index 4b392d44..cd2dec64 100644
--- a/tests/check/elements/audiotestsrc.c
+++ b/tests/check/elements/audiotestsrc.c
@@ -24,12 +24,10 @@
 
 #include <gst/check/gstcheck.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 *mysinkpad;
+static GstPad *mysinkpad;
 
 
 #define CAPS_TEMPLATE_STRING            \
@@ -47,8 +45,8 @@ static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_STATIC_CAPS (CAPS_TEMPLATE_STRING)
     );
 
-GstElement *
-setup_audiotestsrc ()
+static GstElement *
+setup_audiotestsrc (void)
 {
   GstElement *audiotestsrc;
 
@@ -60,7 +58,7 @@ setup_audiotestsrc ()
   return audiotestsrc;
 }
 
-void
+static void
 cleanup_audiotestsrc (GstElement * audiotestsrc)
 {
   GST_DEBUG ("cleanup_audiotestsrc");
@@ -115,7 +113,7 @@ GST_START_TEST (test_all_waves)
 
 GST_END_TEST;
 
-Suite *
+static Suite *
 audiotestsrc_suite (void)
 {
   Suite *s = suite_create ("audiotestsrc");
diff --git a/tests/check/elements/decodebin.c b/tests/check/elements/decodebin.c
index 24d9ea7d..eb6f38a4 100644
--- a/tests/check/elements/decodebin.c
+++ b/tests/check/elements/decodebin.c
@@ -25,7 +25,8 @@
 #include <gst/check/gstcheck.h>
 #include <unistd.h>
 
-const gchar dummytext[] = "Quick Brown Fox Jumps over a Lazy Frog Quick Brown "
+static const gchar dummytext[] =
+    "Quick Brown Fox Jumps over a Lazy Frog Quick Brown "
     "Fox Jumps over a Lazy Frog Quick Brown Fox Jumps over a Lazy Frog Quick "
     "Brown Fox Jumps over a Lazy Frog Quick Brown Fox Jumps over a Lazy Frog "
     "Quick Brown Fox Jumps over a Lazy Frog Quick Brown Fox Jumps over a Lazy "
diff --git a/tests/check/elements/gdpdepay.c b/tests/check/elements/gdpdepay.c
index 119f1cdf..703e0ade 100644
--- a/tests/check/elements/gdpdepay.c
+++ b/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");
diff --git a/tests/check/elements/gdppay.c b/tests/check/elements/gdppay.c
index 80f386fe..267b266d 100644
--- a/tests/check/elements/gdppay.c
+++ b/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");
diff --git a/tests/check/elements/gnomevfssink.c b/tests/check/elements/gnomevfssink.c
index 4aa83c7a..61effa76 100644
--- a/tests/check/elements/gnomevfssink.c
+++ b/tests/check/elements/gnomevfssink.c
@@ -34,9 +34,7 @@
 
 #include <gst/check/gstcheck.h>
 
-gboolean have_eos = FALSE;
-
-GstPad *mysrcpad;
+static GstPad *mysrcpad;
 
 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
@@ -44,7 +42,7 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_STATIC_CAPS_ANY);
 
 static GstElement *
-setup_gnomevfssink ()
+setup_gnomevfssink (void)
 {
   GstElement *gnomevfssink;
 
diff --git a/tests/check/elements/multifdsink.c b/tests/check/elements/multifdsink.c
index 6e934974..a45230bf 100644
--- a/tests/check/elements/multifdsink.c
+++ b/tests/check/elements/multifdsink.c
@@ -26,7 +26,7 @@
 
 #include <gst/check/gstcheck.h>
 
-GstPad *mysrcpad;
+static GstPad *mysrcpad;
 
 static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
@@ -34,8 +34,8 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_STATIC_CAPS ("application/x-gst-check")
     );
 
-GstElement *
-setup_multifdsink ()
+static GstElement *
+setup_multifdsink (void)
 {
   GstElement *multifdsink;
 
@@ -46,7 +46,7 @@ setup_multifdsink ()
   return multifdsink;
 }
 
-void
+static void
 cleanup_multifdsink (GstElement * multifdsink)
 {
   GST_DEBUG ("cleanup_multifdsink");
@@ -844,7 +844,7 @@ GST_END_TEST;
  * an old client still needs to read from before the new streamheaders
  * a new client gets the new streamheaders
  */
-Suite *
+static Suite *
 multifdsink_suite (void)
 {
   Suite *s = suite_create ("multifdsink");
diff --git a/tests/check/elements/textoverlay.c b/tests/check/elements/textoverlay.c
index 1a0e27c9..c5ad3202 100644
--- a/tests/check/elements/textoverlay.c
+++ b/tests/check/elements/textoverlay.c
@@ -35,8 +35,6 @@
 #define WIDTH 240
 #define HEIGHT 120
 
-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 */
diff --git a/tests/check/elements/videorate.c b/tests/check/elements/videorate.c
index 163914e4..485545bf 100644
--- a/tests/check/elements/videorate.c
+++ b/tests/check/elements/videorate.c
@@ -24,12 +24,10 @@
 
 #include <gst/check/gstcheck.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;
+static GstPad *mysrcpad, *mysinkpad;
 
 
 #define VIDEO_CAPS_TEMPLATE_STRING     \
@@ -66,7 +64,7 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_STATIC_CAPS (VIDEO_CAPS_TEMPLATE_STRING)
     );
 
-void
+static void
 assert_videorate_stats (GstElement * videorate, gchar * reason,
     guint64 xin, guint64 xout, guint64 xdropped, guint64 xduplicated)
 {
@@ -90,8 +88,8 @@ G_STMT_START {                                                          \
   _assert_equals_uint64 (duplicated, xduplicated);
 }
 
-GstElement *
-setup_videorate ()
+static GstElement *
+setup_videorate (void)
 {
   GstElement *videorate;
 
@@ -105,7 +103,7 @@ setup_videorate ()
   return videorate;
 }
 
-void
+static void
 cleanup_videorate (GstElement * videorate)
 {
   GST_DEBUG ("cleanup_videorate");
diff --git a/tests/check/elements/videotestsrc.c b/tests/check/elements/videotestsrc.c
index d7860c35..a2a8c7b2 100644
--- a/tests/check/elements/videotestsrc.c
+++ b/tests/check/elements/videotestsrc.c
@@ -33,12 +33,10 @@
 
 #include <gst/check/gstcheck.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 *mysinkpad;
+static GstPad *mysinkpad;
 
 
 #define CAPS_TEMPLATE_STRING            \
@@ -54,8 +52,8 @@ static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_STATIC_CAPS (CAPS_TEMPLATE_STRING)
     );
 
-GstElement *
-setup_videotestsrc ()
+static GstElement *
+setup_videotestsrc (void)
 {
   GstElement *videotestsrc;
 
@@ -67,7 +65,7 @@ setup_videotestsrc ()
   return videotestsrc;
 }
 
-void
+static void
 cleanup_videotestsrc (GstElement * videotestsrc)
 {
   GST_DEBUG ("cleanup_videotestsrc");
diff --git a/tests/check/elements/volume.c b/tests/check/elements/volume.c
index 0bb12f49..e1124880 100644
--- a/tests/check/elements/volume.c
+++ b/tests/check/elements/volume.c
@@ -26,12 +26,10 @@
 #include <gst/check/gstcheck.h>
 #include <gst/controller/gstcontroller.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;
+static GstPad *mysrcpad, *mysinkpad;
 
 
 #define VOLUME_CAPS_TEMPLATE_STRING     \
@@ -119,8 +117,8 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_STATIC_CAPS (VOLUME_CAPS_TEMPLATE_STRING)
     );
 
-GstElement *
-setup_volume ()
+static GstElement *
+setup_volume (void)
 {
   GstElement *volume;
 
@@ -134,7 +132,7 @@ setup_volume ()
   return volume;
 }
 
-void
+static void
 cleanup_volume (GstElement * volume)
 {
   GST_DEBUG ("cleanup_volume");
diff --git a/tests/check/elements/vorbisdec.c b/tests/check/elements/vorbisdec.c
index fa412ec9..66d7ba12 100644
--- a/tests/check/elements/vorbisdec.c
+++ b/tests/check/elements/vorbisdec.c
@@ -30,10 +30,10 @@
 /* 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;
+static GstPad *mysrcpad, *mysinkpad;
 
 /* a valid first header packet */
-guchar identification_header[30] = {
+static guchar identification_header[30] = {
   1,                            /* packet_type */
   'v', 'o', 'r', 'b', 'i', 's',
   0, 0, 0, 0,                   /* vorbis_version */
@@ -46,7 +46,7 @@ guchar identification_header[30] = {
   0x01,                         /* framing_flag */
 };
 
-guchar comment_header[] = {
+static guchar comment_header[] = {
   3,                            /* packet_type */
   'v', 'o', 'r', 'b', 'i', 's',
   2, 0, 0, 0,                   /* vendor_length */
@@ -66,8 +66,8 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS_ANY);
 
-GstElement *
-setup_vorbisdec ()
+static GstElement *
+setup_vorbisdec (void)
 {
   GstElement *vorbisdec;
 
@@ -81,7 +81,7 @@ setup_vorbisdec ()
   return vorbisdec;
 }
 
-void
+static void
 cleanup_vorbisdec (GstElement * vorbisdec)
 {
   GST_DEBUG ("cleanup_vorbisdec");
@@ -233,10 +233,10 @@ GST_START_TEST (test_identification_header)
 
 GST_END_TEST;
 
-vorbis_comment vc;
-vorbis_dsp_state vd;
-vorbis_info vi;
-vorbis_block vb;
+static vorbis_comment vc;
+static vorbis_dsp_state vd;
+static vorbis_info vi;
+static vorbis_block vb;
 
 static GstBuffer *
 _create_codebook_header_buffer (void)
diff --git a/tests/check/elements/vorbistag.c b/tests/check/elements/vorbistag.c
index 4dc95866..4b20d6d7 100644
--- a/tests/check/elements/vorbistag.c
+++ b/tests/check/elements/vorbistag.c
@@ -30,7 +30,7 @@
 #include <gst/check/gstcheck.h>
 
 /* a valid first header packet */
-guchar identification_header[30] = {
+static guchar identification_header[30] = {
   1,                            /* packet_type */
   'v', 'o', 'r', 'b', 'i', 's',
   0, 0, 0, 0,                   /* vorbis_version */
@@ -43,7 +43,7 @@ guchar identification_header[30] = {
   0x01                          /* framing_flag */
 };
 
-guchar artist_comment_header[] = {
+static guchar artist_comment_header[] = {
   3,                            /* packet_type */
   'v', 'o', 'r', 'b', 'i', 's',
   2, 0, 0, 0,                   /* vendor_length */
@@ -54,7 +54,7 @@ guchar artist_comment_header[] = {
   0x01,                         /* framing bit */
 };
 
-guchar title_comment_header[] = {
+static guchar title_comment_header[] = {
   3,                            /* packet_type */
   'v', 'o', 'r', 'b', 'i', 's',
   2, 0, 0, 0,                   /* vendor_length */
@@ -65,7 +65,7 @@ guchar title_comment_header[] = {
   0x01,                         /* framing bit */
 };
 
-guchar empty_comment_header[] = {
+static guchar empty_comment_header[] = {
   3,                            /* packet_type */
   'v', 'o', 'r', 'b', 'i', 's',
   2, 0, 0, 0,                   /* vendor_length */
@@ -84,8 +84,8 @@ static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS_ANY);
 
-GstPad *mysrcpad, *mysinkpad;
-GAsyncQueue *pending_buffers;
+static GstPad *mysrcpad, *mysinkpad;
+static GAsyncQueue *pending_buffers;
 static gulong id;
 
 
@@ -160,10 +160,10 @@ stop_pipeline (GstElement * element)
   pending_buffers = NULL;
 }
 
-vorbis_comment vc;
-vorbis_dsp_state vd;
-vorbis_info vi;
-vorbis_block vb;
+static vorbis_comment vc;
+static vorbis_dsp_state vd;
+static vorbis_info vi;
+static vorbis_block vb;
 
 static GstBuffer *
 _create_codebook_header_buffer (void)
diff --git a/tests/check/generic/clock-selection.c b/tests/check/generic/clock-selection.c
index b09c5a52..8e332f81 100644
--- a/tests/check/generic/clock-selection.c
+++ b/tests/check/generic/clock-selection.c
@@ -42,7 +42,7 @@ GST_START_TEST (test_add)
 
 GST_END_TEST;
 
-Suite *
+static Suite *
 volume_suite (void)
 {
   Suite *s = suite_create ("clocks");
diff --git a/tests/check/generic/states.c b/tests/check/generic/states.c
index 6b5ab990..c6ebd6b1 100644
--- a/tests/check/generic/states.c
+++ b/tests/check/generic/states.c
@@ -31,7 +31,7 @@
 static GList *elements = NULL;
 
 static void
-setup ()
+setup (void)
 {
   GList *features, *f;
   GList *plugins, *p;
@@ -88,7 +88,7 @@ setup ()
 }
 
 static void
-teardown ()
+teardown (void)
 {
   GList *e;
 
@@ -204,7 +204,7 @@ GST_START_TEST (test_state_changes_down_seq)
 GST_END_TEST;
 
 
-Suite *
+static Suite *
 states_suite (void)
 {
   Suite *s = suite_create ("states");
diff --git a/tests/check/libs/cddabasesrc.c b/tests/check/libs/cddabasesrc.c
index 0daf4996..c737c8c0 100644
--- a/tests/check/libs/cddabasesrc.c
+++ b/tests/check/libs/cddabasesrc.c
@@ -154,7 +154,7 @@ struct _test_disc
 
 /* FIXME: now we just need to find out how to treat
  * data tracks for the cddb id calculation .... */
-struct _test_disc test_discs[NUM_TEST_DISCS] = {
+static struct _test_disc test_discs[NUM_TEST_DISCS] = {
   {nh_cd2_tracks, G_N_ELEMENTS (nh_cd2_tracks), 0xae11900e,
       NULL},
   {mb_sample_tracks, G_N_ELEMENTS (mb_sample_tracks), 0x00000000,
diff --git a/tests/check/pipelines/gio.c b/tests/check/pipelines/gio.c
index 07ca0136..c4b17f2a 100644
--- a/tests/check/pipelines/gio.c
+++ b/tests/check/pipelines/gio.c
@@ -135,7 +135,7 @@ GST_START_TEST (test_memory_stream)
 
 GST_END_TEST;
 
-Suite *
+static Suite *
 gio_testsuite (void)
 {
   Suite *s = suite_create ("gio");
diff --git a/tests/check/pipelines/oggmux.c b/tests/check/pipelines/oggmux.c
index 254f810d..dbb607b9 100644
--- a/tests/check/pipelines/oggmux.c
+++ b/tests/check/pipelines/oggmux.c
@@ -46,8 +46,8 @@ typedef struct
   ChainCodec codec;
 } ChainState;
 
-ogg_sync_state oggsync;
-GHashTable *eos_chain_states;
+static ogg_sync_state oggsync;
+static GHashTable *eos_chain_states;
 static gulong probe_id;
 
 
diff --git a/tests/check/pipelines/simple-launch-lines.c b/tests/check/pipelines/simple-launch-lines.c
index 3f0bdc17..51c3052e 100644
--- a/tests/check/pipelines/simple-launch-lines.c
+++ b/tests/check/pipelines/simple-launch-lines.c
@@ -129,7 +129,8 @@ GST_START_TEST (test_element_negotiation)
 #endif
 }
 
-GST_END_TEST
+GST_END_TEST;
+
 GST_START_TEST (test_basetransform_based)
 {
   /* Each of these tests is to check whether various basetransform based 
@@ -201,9 +202,11 @@ GST_START_TEST (test_basetransform_based)
       GST_MESSAGE_UNKNOWN);
 }
 
-GST_END_TEST
+GST_END_TEST;
+
 #endif /* #ifndef GST_DISABLE_PARSE */
-    Suite * simple_launch_lines_suite (void)
+static Suite *
+simple_launch_lines_suite (void)
 {
   Suite *s = suite_create ("Pipelines");
   TCase *tc_chain = tcase_create ("linear");
diff --git a/tests/check/pipelines/streamheader.c b/tests/check/pipelines/streamheader.c
index d5814820..ebd86e46 100644
--- a/tests/check/pipelines/streamheader.c
+++ b/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");
diff --git a/tests/check/pipelines/theoraenc.c b/tests/check/pipelines/theoraenc.c
index 673fa01c..76cb8a9b 100644
--- a/tests/check/pipelines/theoraenc.c
+++ b/tests/check/pipelines/theoraenc.c
@@ -426,7 +426,7 @@ GST_END_TEST;
 
 #endif /* #ifndef GST_DISABLE_PARSE */
 
-Suite *
+static Suite *
 theoraenc_suite (void)
 {
   Suite *s = suite_create ("theoraenc");
diff --git a/tests/check/pipelines/vorbisdec.c b/tests/check/pipelines/vorbisdec.c
index cd8bd06b..9d467607 100644
--- a/tests/check/pipelines/vorbisdec.c
+++ b/tests/check/pipelines/vorbisdec.c
@@ -25,10 +25,10 @@
 
 #ifndef GST_DISABLE_PARSE
 
-GMainLoop *loop;
-gint messages = 0;
+static GMainLoop *loop;
+static gint messages = 0;
 
-void
+static void
 element_message_cb (GstBus * bus, GstMessage * message, gpointer user_data)
 {
   gchar *s;
@@ -40,7 +40,7 @@ element_message_cb (GstBus * bus, GstMessage * message, gpointer user_data)
   messages++;
 }
 
-void
+static void
 eos_message_cb (GstBus * bus, GstMessage * message, gpointer user_data)
 {
   GST_DEBUG ("Received eos");
@@ -93,7 +93,7 @@ GST_START_TEST (test_timestamps)
 GST_END_TEST;
 #endif /* #ifndef GST_DISABLE_PARSE */
 
-Suite *
+static Suite *
 vorbisenc_suite (void)
 {
   Suite *s = suite_create ("vorbisenc");
diff --git a/tests/check/pipelines/vorbisenc.c b/tests/check/pipelines/vorbisenc.c
index 5d12ac54..0f2bff0f 100644
--- a/tests/check/pipelines/vorbisenc.c
+++ b/tests/check/pipelines/vorbisenc.c
@@ -376,7 +376,7 @@ GST_END_TEST;
 
 #endif /* #ifndef GST_DISABLE_PARSE */
 
-Suite *
+static Suite *
 vorbisenc_suite (void)
 {
   Suite *s = suite_create ("vorbisenc");
diff --git a/tests/examples/seek/scrubby.c b/tests/examples/seek/scrubby.c
index c8f62487..f619b872 100644
--- a/tests/examples/seek/scrubby.c
+++ b/tests/examples/seek/scrubby.c
@@ -34,12 +34,12 @@ static guint schanged_id = 0;
 #define SEGMENT_LEN 100
 #define UPDATE_INTERVAL 500
 
-gdouble prev_range = -1.0;
-GstClockTime prev_time = GST_CLOCK_TIME_NONE;
-gdouble cur_range;
-GstClockTime cur_time;
-GstClockTimeDiff diff;
-gdouble cur_speed = 1.0;
+static gdouble prev_range = -1.0;
+static GstClockTime prev_time = GST_CLOCK_TIME_NONE;
+static gdouble cur_range;
+static GstClockTime cur_time;
+static GstClockTimeDiff diff;
+static gdouble cur_speed = 1.0;
 
 typedef struct
 {
diff --git a/tests/examples/seek/seek.c b/tests/examples/seek/seek.c
index c954daad..d4aa9856 100644
--- a/tests/examples/seek/seek.c
+++ b/tests/examples/seek/seek.c
@@ -994,7 +994,7 @@ query_rates (void)
 }
 
 G_GNUC_UNUSED static void
-query_positions_elems ()
+query_positions_elems (void)
 {
   GList *walk = seekable_elements;
 
@@ -1026,7 +1026,7 @@ query_positions_elems ()
 }
 
 G_GNUC_UNUSED static void
-query_positions_pads ()
+query_positions_pads (void)
 {
   GList *walk = seekable_pads;
 
diff --git a/tests/icles/stress-xoverlay.c b/tests/icles/stress-xoverlay.c
index 8dcaaef6..41a6c923 100644
--- a/tests/icles/stress-xoverlay.c
+++ b/tests/icles/stress-xoverlay.c
@@ -39,7 +39,7 @@ static gint width = 320, height = 240, x = 0, y = 0;
 static gint disp_width, disp_height;
 
 static inline long
-myclock ()
+myclock (void)
 {
   struct timeval tv;
 
diff --git a/win32/common/libgstrtp.def b/win32/common/libgstrtp.def
index d9f91c26..4c14a5a2 100644
--- a/win32/common/libgstrtp.def
+++ b/win32/common/libgstrtp.def
@@ -87,6 +87,7 @@ EXPORTS
 	gst_rtp_buffer_pad_to
 	gst_rtp_buffer_set_csrc
 	gst_rtp_buffer_set_extension
+	gst_rtp_buffer_set_extension_data
 	gst_rtp_buffer_set_marker
 	gst_rtp_buffer_set_packet_len
 	gst_rtp_buffer_set_padding