pub unsafe extern "C" fn gst_buffer_add_video_gl_texture_upload_meta(
buffer: *mut GstBuffer,
texture_orientation: GstVideoGLTextureOrientation,
n_textures: c_uint,
texture_type: *mut GstVideoGLTextureType,
upload: GstVideoGLTextureUpload,
user_data: gpointer,
user_data_copy: GBoxedCopyFunc,
user_data_free: GBoxedFreeFunc
) -> *mut GstVideoGLTextureUploadMeta