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pstCtx->va_dpy = vaGetDisplay((void *)(&gx11_display));

va_status = vaInitialize(pstCtx->va_dpy, &major_ver, &minor_ver);
CHECK_VASTATUS(va_status, "vaInitialize");

num_display_attrs = 0; /* XXX: workaround old GMA500 bug */
va_status = vaQueryDisplayAttributes(pstCtx->va_dpy, display_attrs, &num_display_attrs);
if (!vaapi_check_status(va_status, "vaQueryDisplayAttributes()"))
{
    printf("#########################vaQueryDisplayAttributes\n");
    free(display_attrs);
    assert(0);
}

 for (i = 0; i < num_display_attrs; i++) {
    VADisplayAttribute * const display_attr = &display_attrs[i];
    printf("   (%s/%s) min %d max %d value 0x%x\n",
          (display_attr->flags & VA_DISPLAY_ATTRIB_GETTABLE) ? "get" : "---",
          (display_attr->flags & VA_DISPLAY_ATTRIB_SETTABLE) ? "set" : "---",
          display_attr->min_value,
          display_attr->max_value,
          display_attr->value);
}

VADisplayAttribute attr;
attr.type  = VADisplayAttribRotation;
attr.value = VA_ROTATION_180;
attr.flags = VA_DISPLAY_ATTRIB_SETTABLE;
va_status = vaSetDisplayAttributes(pstCtx->va_dpy, &attr, 1);
if (!vaapi_check_status(va_status, "vaSetDisplayAttributes()"))
{
    printf("###########################vaSetDisplayAttributes failed\n");
    assert(0);
}
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