libs:filter: Fix color balance filter calling
When set multiple settings of color balance like hue, saturation, brightness and contrast for vaapipostproc, they should be input into media driver as the parameters of color balance filter at the same color balance filter calling. Otherwise, multiple color balance filter calling will cause previous setting is reset by the last calling with default value.
Fixes #182 (closed).
Signed-off-by: Yan Wang yan.wang@linux.intel.com
Edited by Yan Wang