[media] videodev2.h: add defines for the VBI field start lines
While working with raw and sliced VBI support in several applications I noticed that you really need to know the start linenumbers for each video field in order to correctly convert the start line numbers reported by v4l2_vbi_format to the line numbers used in v4l2_sliced_vbi_format. This patch adds four defines that specify the start lines for each field for both 525 and 625 line standards. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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1c6f3db04f
Коммит
273886b4f7
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@ -1642,6 +1642,12 @@ struct v4l2_vbi_format {
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#define V4L2_VBI_UNSYNC (1 << 0)
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#define V4L2_VBI_INTERLACED (1 << 1)
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/* ITU-R start lines for each field */
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#define V4L2_VBI_ITU_525_F1_START (1)
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#define V4L2_VBI_ITU_525_F2_START (264)
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#define V4L2_VBI_ITU_625_F1_START (1)
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#define V4L2_VBI_ITU_625_F2_START (314)
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/* Sliced VBI
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*
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* This implements is a proposal V4L2 API to allow SLICED VBI
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