From 001fa08542dd5fc79571f7c803b2d3dd59c04a06 Mon Sep 17 00:00:00 2001
From: Andre McCurdy <armccurdy@gmail.com>
Date: Tue, 9 Feb 2016 14:00:00 -0800
Subject: [PATCH] ensure valid sentinals for gst_structure_get() etc

For GStreamer functions declared with G_GNUC_NULL_TERMINATED,
ie __attribute__((__sentinel__)), gcc will generate a warning if the
last parameter passed to the function is not NULL (where a valid NULL
in this context is defined as zero with any pointer type).

The C callers to such functions within gst-plugins-bad use the C NULL
definition (ie ((void*)0)), which is a valid sentinel.

However the C++ NULL definition (ie 0L), is not a valid sentinel
without an explicit cast to a pointer type.

Upstream-Status: Pending

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>

---
 sys/decklink/gstdecklink.cpp          | 10 +++++-----
 sys/decklink/gstdecklinkaudiosrc.cpp  |  2 +-
 sys/decklink/gstdecklinkvideosink.cpp |  2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/sys/decklink/gstdecklink.cpp b/sys/decklink/gstdecklink.cpp
index 3f79deb..96600c6 100644
--- a/sys/decklink/gstdecklink.cpp
+++ b/sys/decklink/gstdecklink.cpp
@@ -680,7 +680,7 @@ gst_decklink_mode_get_generic_structure (GstDecklinkModeEnum e)
       "pixel-aspect-ratio", GST_TYPE_FRACTION, mode->par_n, mode->par_d,
       "interlace-mode", G_TYPE_STRING,
       mode->interlaced ? "interleaved" : "progressive",
-      "framerate", GST_TYPE_FRACTION, mode->fps_n, mode->fps_d, NULL);
+      "framerate", GST_TYPE_FRACTION, mode->fps_n, mode->fps_d, (void*)NULL);
 
   return s;
 }
@@ -705,16 +705,16 @@ gst_decklink_mode_get_structure (GstDecklinkModeEnum e, BMDPixelFormat f,
     case bmdFormat8BitYUV:     /* '2vuy' */
       gst_structure_set (s, "format", G_TYPE_STRING, "UYVY",
           "colorimetry", G_TYPE_STRING, mode->colorimetry,
-          "chroma-site", G_TYPE_STRING, "mpeg2", NULL);
+          "chroma-site", G_TYPE_STRING, "mpeg2", (void*)NULL);
       break;
     case bmdFormat10BitYUV:    /* 'v210' */
-      gst_structure_set (s, "format", G_TYPE_STRING, "v210", NULL);
+      gst_structure_set (s, "format", G_TYPE_STRING, "v210", (void*)NULL);
       break;
     case bmdFormat8BitARGB:    /* 'ARGB' */
-      gst_structure_set (s, "format", G_TYPE_STRING, "ARGB", NULL);
+      gst_structure_set (s, "format", G_TYPE_STRING, "ARGB", (void*)NULL);
       break;
     case bmdFormat8BitBGRA:    /* 'BGRA' */
-      gst_structure_set (s, "format", G_TYPE_STRING, "BGRA", NULL);
+      gst_structure_set (s, "format", G_TYPE_STRING, "BGRA", (void*)NULL);
       break;
     case bmdFormat10BitRGB:    /* 'r210' Big-endian RGB 10-bit per component with SMPTE video levels (64-960). Packed as 2:10:10:10 */
     case bmdFormat12BitRGB:    /* 'R12B' Big-endian RGB 12-bit per component with full range (0-4095). Packed as 12-bit per component */
diff --git a/sys/decklink/gstdecklinkaudiosrc.cpp b/sys/decklink/gstdecklinkaudiosrc.cpp
index 50ad5cc..d209180 100644
--- a/sys/decklink/gstdecklinkaudiosrc.cpp
+++ b/sys/decklink/gstdecklinkaudiosrc.cpp
@@ -388,7 +388,7 @@ gst_decklink_audio_src_start (GstDecklinkAudioSrc * self)
       g_mutex_unlock (&self->input->lock);
 
       if (videosrc) {
-        g_object_get (videosrc, "connection", &vconn, NULL);
+        g_object_get (videosrc, "connection", &vconn, (void *) NULL);
         gst_object_unref (videosrc);
 
         switch (vconn) {
diff --git a/sys/decklink/gstdecklinkvideosink.cpp b/sys/decklink/gstdecklinkvideosink.cpp
index a64c046..07a09e8 100644
--- a/sys/decklink/gstdecklinkvideosink.cpp
+++ b/sys/decklink/gstdecklinkvideosink.cpp
@@ -288,7 +288,7 @@ reset_framerate (GstCapsFeatures * features, GstStructure * structure,
     gpointer user_data)
 {
   gst_structure_set (structure, "framerate", GST_TYPE_FRACTION_RANGE, 0, 1,
-      G_MAXINT, 1, NULL);
+      G_MAXINT, 1, (void *) NULL);
 
   return TRUE;
 }