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video: Add GST_VIDEO_INFO_FIELD_HEIGHT() macro

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Add a new macro that gives you the height of a field. It returns the
height of the full frame unless split-field (alternate) interlacing is
in use. Also GST_VIDEO_INFO_COMP_HEIGHT macro now uses this new macro to
get the height for its calculation.

https://bugzilla.gnome.org/show_bug.cgi?id=796106
This commit is contained in:
Zeeshan Ali 2018-07-02 23:48:04 +02:00 committed by Nicolas Dufresne
parent 0c034f3894
commit 4879983253
2 changed files with 11 additions and 6 deletions
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6
gst-libs/gst/video/video-info.c
View file

@ -731,11 +731,7 @@ fill_planes (GstVideoInfo * info)
gint bpp = 0, i;
width = (gsize) info->width;
if (GST_VIDEO_INFO_INTERLACE_MODE (info) ==
GST_VIDEO_INTERLACE_MODE_ALTERNATE)
height = (gsize) info->height / 2;
else
height = (gsize) info->height;
height = (gsize) GST_VIDEO_INFO_FIELD_HEIGHT (info);
/* Sanity check the resulting frame size for overflows */
for (i = 0; i < GST_VIDEO_INFO_N_COMPONENTS (info); i++)

11
gst-libs/gst/video/video-info.h
View file

@ -351,6 +351,15 @@ GType gst_video_info_get_type (void);
#define GST_VIDEO_INFO_FLAGS(i) ((i)->flags)
#define GST_VIDEO_INFO_WIDTH(i) ((i)->width)
#define GST_VIDEO_INFO_HEIGHT(i) ((i)->height)
/**
* GST_VIDEO_INFO_FIELD_HEIGHT:
*
* The height of a field. It's the height of the full frame unless split-field
* (alternate) interlacing is in use.
*
* Since: 1.16.
*/
#define GST_VIDEO_INFO_FIELD_HEIGHT(i) ((i)->interlace_mode == GST_VIDEO_INTERLACE_MODE_ALTERNATE? (i)->height / 2 : (i)->height)
#define GST_VIDEO_INFO_SIZE(i) ((i)->size)
#define GST_VIDEO_INFO_VIEWS(i) ((i)->views)
#define GST_VIDEO_INFO_PAR_N(i) ((i)->par_n)
@ -381,7 +390,7 @@ GType gst_video_info_get_type (void);
#define GST_VIDEO_INFO_COMP_OFFSET(i,c) GST_VIDEO_FORMAT_INFO_OFFSET((i)->finfo,(i)->offset,(c))
#define GST_VIDEO_INFO_COMP_STRIDE(i,c) GST_VIDEO_FORMAT_INFO_STRIDE((i)->finfo,(i)->stride,(c))
#define GST_VIDEO_INFO_COMP_WIDTH(i,c) GST_VIDEO_FORMAT_INFO_SCALE_WIDTH((i)->finfo,(c),(i)->width)
#define GST_VIDEO_INFO_COMP_HEIGHT(i,c) GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT((i)->finfo,(c),(i)->height)
#define GST_VIDEO_INFO_COMP_HEIGHT(i,c) GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT((i)->finfo,(c),GST_VIDEO_INFO_FIELD_HEIGHT(i))
#define GST_VIDEO_INFO_COMP_PLANE(i,c) GST_VIDEO_FORMAT_INFO_PLANE((i)->finfo,(c))
#define GST_VIDEO_INFO_COMP_PSTRIDE(i,c) GST_VIDEO_FORMAT_INFO_PSTRIDE((i)->finfo,(c))
#define GST_VIDEO_INFO_COMP_POFFSET(i,c) GST_VIDEO_FORMAT_INFO_POFFSET((i)->finfo,(c))