alloc

Description:

public Memory alloc (uint32 drm_fourcc, uint32 width, uint32 height, out uint32 out_pitch)

Allocated a DRM buffer object for the specific drm_fourcc, width and height.

Note that the DRM Dumb allocation interface is agnostic to the pixel format. This drm_fourcc is converted into a bpp ( bit-per-pixel) number and the height is scaled according to the sub-sampling.

Parameters:

this	the allocator instance
drm_fourcc	the DRM format to allocate for
width	padded width for this allocation
height	padded height for this allocation
out_pitch	the pitch as returned by the driver

Returns:

a new DRM Dumb Memory. Use gst_memory_unref to release the memory after usage.