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deinterlace: Provide documentation for GST_DEINTERLACE_BUFFER_STATE

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More information available in
https://gstconf.ubicast.tv/videos/interlacing-and-telecine-in-gstreamer/

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/866>
This commit is contained in:
Robert Swain 2021-02-03 17:10:20 +02:00 committed by Vivia Nikolaidou
parent c7b11482d0
commit 25f98ab134
1 changed files with 13 additions and 0 deletions
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13
gst/deinterlace/gstdeinterlace.c
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@ -73,12 +73,25 @@ enum
PROP_DROP_ORPHANS
};
/* P is progressive, meaning the top and bottom fields belong to
* the same frame, i.e. they were sampled at the same time */
#define GST_DEINTERLACE_BUFFER_STATE_P (1<<0)
/* I is interlaced meaning that the two fields were sampled at
* different times, usually equidistant in time so one at 1/60,
* the other at 2/60 */
#define GST_DEINTERLACE_BUFFER_STATE_I (1<<1)
/* TC is telecine, B means bottom, T means top */
#define GST_DEINTERLACE_BUFFER_STATE_TC_B (1<<2)
#define GST_DEINTERLACE_BUFFER_STATE_TC_T (1<<3)
/* TC_P means telecine progressive meaning that the two fields
* in the frame were sampled at the same time */
#define GST_DEINTERLACE_BUFFER_STATE_TC_P (1<<4)
/* TC_M i think means telecine mixed, meaning that the two fields
* are sampled at different times so you need to find the other field
* in the previous or next frame */
#define GST_DEINTERLACE_BUFFER_STATE_TC_M (1<<5)
/* RFF means repeat field flag and indicates a field that has
* previously been seen */
#define GST_DEINTERLACE_BUFFER_STATE_RFF (1<<6)
#define GST_ONE \