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video: add fields interlacing enum

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Add an enum and docs for the fields interlace mode.
Improve the video caps docs for the fields interlace mode.
This commit is contained in:
Wim Taymans 2012-04-25 14:44:33 +02:00
parent 777d044357
commit 07d34f576a
2 changed files with 10 additions and 2 deletions
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3
docs/design/part-mediatype-video-raw.txt
View file

@ -31,7 +31,8 @@ Media Types
the frame and fields.
"fields" : 2 fields are stored in one buffer, use the frame ID
to get access to the required field. For multiview (the
views property > 1) the second field of view N is at N * 2.
'views' property > 1) the second field of view N is at N +
'views'.
Each view has only half the amount of lines as noted in the
height property, pads specifying the "fields" property
must be prepared for this. This mode requires multiple

9
gst-libs/gst/video/video.h
View file

@ -316,6 +316,12 @@ typedef struct _GstVideoFrame GstVideoFrame;
* are interlaced in one frame.
* @GST_VIDEO_INTERLACE_MODE_MIXED: video contains both interlaced and
* progressive frames, the buffer flags describe the frame and fields.
* @GST_VIDEO_INTERLACE_MODE_FIELDS: 2 fields are stored in one buffer, use the
* frame ID to get access to the required field. For multiview (the
* 'views' property > 1) the second field of view N is at N + 'views'.
* Each view has only half the amount of lines as noted in the
* height property. This mode requires multiple GstVideoMeta metadata
* to describe the fields.
*
* The possible values of the #GstVideoInterlaceMode describing the interlace
* mode of the stream.
@ -323,7 +329,8 @@ typedef struct _GstVideoFrame GstVideoFrame;
typedef enum {
GST_VIDEO_INTERLACE_MODE_PROGRESSIVE = 0,
GST_VIDEO_INTERLACE_MODE_INTERLEAVED,
GST_VIDEO_INTERLACE_MODE_MIXED
GST_VIDEO_INTERLACE_MODE_MIXED,
GST_VIDEO_INTERLACE_MODE_FIELDS
} GstVideoInterlaceMode;
/**