gsc_prepare_addr
int gsc_prepare_addr(struct gsc_ctx *ctx, struct vb2_buffer *vb,
ret = gsc_prepare_addr(ctx, &src_vb->vb2_buf, s_frame, &s_frame->addr);
ret = gsc_prepare_addr(ctx, &dst_vb->vb2_buf, d_frame, &d_frame->addr);