Validate input chroma in transform filter, make it work with Packed YUV...

Validate input chroma in transform filter, make it work with Packed YUV (tested with YUY2 only but should work with other variants). Other misc changes.

modules/video_filter/adjust.c

@@ -125,18 +125,7 @@ static int Create( vlc_object_t *p_this )
 
     switch( p_filter->fmt_in.video.i_chroma )
     {
-        case VLC_FOURCC('I','4','2','0'):
-        case VLC_FOURCC('I','Y','U','V'):
-        case VLC_FOURCC('J','4','2','0'):
-        case VLC_FOURCC('Y','V','1','2'):
-        case VLC_FOURCC('I','4','1','1'):
-        case VLC_FOURCC('I','4','1','0'):
-        case VLC_FOURCC('Y','V','U','9'):
-        case VLC_FOURCC('I','4','2','2'):
-        case VLC_FOURCC('J','4','2','2'):
-        case VLC_FOURCC('I','4','4','4'):
-        case VLC_FOURCC('J','4','4','4'):
-        case VLC_FOURCC('Y','U','V','A'):
+        CASE_PLANAR_YUV
             /* Planar YUV */
             p_filter->pf_video_filter = FilterPlanar;
             break;

modules/video_filter/filter_picture.h

@@ -21,8 +21,21 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  *****************************************************************************/
 
+#define CASE_PLANAR_YUV                     \
+        case VLC_FOURCC('I','4','2','0'):   \
+        case VLC_FOURCC('I','Y','U','V'):   \
+        case VLC_FOURCC('J','4','2','0'):   \
+        case VLC_FOURCC('Y','V','1','2'):   \
+        case VLC_FOURCC('I','4','1','1'):   \
+        case VLC_FOURCC('I','4','1','0'):   \
+        case VLC_FOURCC('Y','V','U','9'):   \
+        case VLC_FOURCC('I','4','2','2'):   \
+        case VLC_FOURCC('J','4','2','2'):   \
+        case VLC_FOURCC('I','4','4','4'):   \
+        case VLC_FOURCC('J','4','4','4'):   \
+        case VLC_FOURCC('Y','U','V','A'):
+
 #define CASE_PACKED_YUV_422                 \
-        case VLC_FOURCC('I','U','Y','V'):   \
         case VLC_FOURCC('U','Y','V','Y'):   \
         case VLC_FOURCC('U','Y','N','V'):   \
         case VLC_FOURCC('Y','4','2','2'):   \
@@ -36,7 +49,6 @@ static inline int GetPackedYuvOffsets( vlc_fourcc_t i_chroma,
 {
     switch( i_chroma )
     {
-        case VLC_FOURCC('I','U','Y','V'): /* <-- FIXME: interlaced */
         case VLC_FOURCC('U','Y','V','Y'):
         case VLC_FOURCC('U','Y','N','V'):
         case VLC_FOURCC('Y','4','2','2'):