the #GstAllocator to initialize with
the parent #GstMemory to initialize with
the #GstGLContext to initialize with
the #GstGLTextureTarget for this #GstGLMemory
the #GstGLFormat for this #GstGLMemory
the GstAllocationParams to initialize with
the #GstVideoInfo for this #GstGLMemory
the plane number (starting from 0) for this #GstGLMemory
optional #GstVideoAlignment parameters
user data to call notify with
a #GDestroyNotify
Initializes mem with the required parameters. info is assumed to have already have been modified with gstvideo.video_info.VideoInfo.align_.