GstVideo.VideoInfoDmaDrm¶

Fields¶

Name	Type	Access	Description
drm_fourcc	`int`	r/w	the fourcc defined by drm
drm_modifier	`int`	r/w	the drm modifier
vinfo	`GstVideo.VideoInfo`	r/w	the associated `GstVideo.VideoInfo`

Methods¶

class	`from_caps` (caps)
class	`from_video_info` (info, modifier)
class	`init` ()
class	`new` ()
class	`new_from_caps` (caps)
	`free` ()
	`to_caps` ()
	`to_video_info` ()

Details¶

class GstVideo.VideoInfoDmaDrm¶

Information describing a DMABuf image properties. It wraps GstVideo.VideoInfo and adds DRM information such as drm-fourcc and drm-modifier, required for negotiation and mapping.

New in version 1.24.

classmethod from_caps(caps)[source]¶

Parameters:

caps (Gst.Caps) – a Gst.Caps

Returns:

True if caps could be parsed

drm_info:: GstVideo.VideoInfoDmaDrm

Return type:

(bool, drm_info: GstVideo.VideoInfoDmaDrm)

Parse caps and update info. Please note that the caps should be a dma drm caps. The GstVideo.video_is_dma_drm_caps() can be used to verify it before calling this function.

New in version 1.24.

classmethod from_video_info(info, modifier)[source]¶

Parameters:

info (GstVideo.VideoInfo) – a GstVideo.VideoInfo
modifier (int) – the associated modifier value.

Returns:

True if drm_info is filled correctly.

drm_info:: GstVideo.VideoInfoDmaDrm

Return type:

(bool, drm_info: GstVideo.VideoInfoDmaDrm)

Fills drm_info if info's format has a valid drm format and modifier is also valid

New in version 1.24.

classmethod init()[source]¶

Returns:: a GstVideo.VideoInfoDmaDrm
Return type:: drm_info: GstVideo.VideoInfoDmaDrm

Initialize drm_info with default values.

New in version 1.24.

classmethod new()[source]¶

Returns:: a new GstVideo.VideoInfoDmaDrm. Free it with GstVideo.VideoInfoDmaDrm.free().
Return type:: GstVideo.VideoInfoDmaDrm

Allocate a new GstVideo.VideoInfoDmaDrm that is also initialized with GstVideo.VideoInfoDmaDrm.init().

New in version 1.24.

classmethod new_from_caps(caps)[source]¶

Parameters:: caps (Gst.Caps) – a Gst.Caps
Returns:: A GstVideo.VideoInfoDmaDrm, or None if caps couldn’t be parsed.
Return type:: GstVideo.VideoInfoDmaDrm or None

Parse caps to generate a GstVideo.VideoInfoDmaDrm. Please note that the caps should be a dma drm caps. The GstVideo.video_is_dma_drm_caps() can be used to verify it before calling this function.

New in version 1.24.

free()[source]¶: Free a GstVideo.VideoInfoDmaDrm structure previously allocated with GstVideo.VideoInfoDmaDrm.new()

New in version 1.24.

to_caps()[source]¶

Returns:: a new Gst.Caps containing the info in self.
Return type:: Gst.Caps or None

Convert the values of self into a Gst.Caps. Please note that the caps returned will be a dma drm caps which sets format field to DMA_DRM, and contains a new drm-format field. The value of drm-format field is composed of a drm fourcc and a modifier, such as NV12:0x0100000000000002.

New in version 1.24.

to_video_info()[source]¶

Returns:

True if info is converted correctly.

info:: GstVideo.VideoInfo

Return type:

(bool, info: GstVideo.VideoInfo)

Convert the GstVideo.VideoInfoDmaDrm into a traditional GstVideo.VideoInfo with recognized video format. For DMA kind memory, the non linear DMA format should be recognized as GstVideo.VideoFormat.DMA_DRM. This helper function sets info's video format into the default value according to self's drm_fourcc field.

New in version 1.24.