diff options
Diffstat (limited to 'gst/deinterlace')
| -rw-r--r-- | gst/deinterlace/gstdeinterlace.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/gst/deinterlace/gstdeinterlace.c b/gst/deinterlace/gstdeinterlace.c index 20da65cc..0b178492 100644 --- a/gst/deinterlace/gstdeinterlace.c +++ b/gst/deinterlace/gstdeinterlace.c @@ -27,6 +27,21 @@ #include <gst/video/video.h> #include "gstdeinterlace.h" +/* these macros are adapted from videotestsrc, paint_setup_I420() */ +#define ROUND_UP_2(x) (((x)+1)&~1) +#define ROUND_UP_4(x) (((x)+3)&~3) +#define ROUND_UP_8(x) (((x)+7)&~7) + +#define GST_VIDEO_I420_Y_ROWSTRIDE(width) (ROUND_UP_4(width)) +#define GST_VIDEO_I420_U_ROWSTRIDE(width) (ROUND_UP_8(width)/2) +#define GST_VIDEO_I420_V_ROWSTRIDE(width) ((ROUND_UP_8(GST_VIDEO_I420_Y_ROWSTRIDE(width)))/2) + +#define GST_VIDEO_I420_Y_OFFSET(w,h) (0) +#define GST_VIDEO_I420_U_OFFSET(w,h) (GST_VIDEO_I420_Y_OFFSET(w,h)+(GST_VIDEO_I420_Y_ROWSTRIDE(w)*ROUND_UP_2(h))) +#define GST_VIDEO_I420_V_OFFSET(w,h) (GST_VIDEO_I420_U_OFFSET(w,h)+(GST_VIDEO_I420_U_ROWSTRIDE(w)*ROUND_UP_2(h)/2)) + +#define GST_VIDEO_I420_SIZE(w,h) (GST_VIDEO_I420_V_OFFSET(w,h)+(GST_VIDEO_I420_V_ROWSTRIDE(w)*ROUND_UP_2(h)/2)) + /* elementfactory information */ static GstElementDetails deinterlace_details = GST_ELEMENT_DETAILS ("Deinterlace", @@ -173,10 +188,10 @@ gst_deinterlace_link (GstPad * pad, const GstCaps * caps) gst_structure_get_int (structure, "width", &filter->width); gst_structure_get_int (structure, "height", &filter->height); - if (filter->picsize != (filter->width * filter->height)) { + if (filter->picsize != GST_VIDEO_I420_SIZE (filter->width, filter->height)) { if (filter->src) g_free (filter->src); - filter->picsize = filter->width * filter->height; + filter->picsize = GST_VIDEO_I420_SIZE (filter->width, filter->height); filter->src = g_malloc (filter->picsize); } @@ -250,7 +265,7 @@ gst_deinterlace_chain (GstPad * pad, GstData * _data) /* 2 pixels per 2 lines = 4 pixel and we don't want to change */ /* the color of */ - y_line = width; + y_line = GST_VIDEO_I420_Y_ROWSTRIDE (width); y_src = src; iThreshold = iThreshold * iThreshold * 4; |