Update comment for quality_level

Allow user set VAEncMiscParameterBufferQualityLevel::quality_level
to 0 to use default quality level

Signed-off-by: Xiang, Haihao <haihao.xiang@intel.com>
(cherry picked from commit b05e38f64c5aa2d6edfc2bd1d6e1f4339a54095a)

Conflicts:
	va/va.h

1 files changed, 3 insertions, 1 deletions

diff --git a/va/va.h b/va/va.h
index adb0d6e..a11cdfe 100644
--- a/va/va.h
+++ b/va/va.h
@@ -1092,7 +1092,9 @@ typedef struct _VAEncMiscParameterBufferMaxFrameSize {
  * consumption, with higher quality corresponds to lower speed and higher power consumption. 
  */
 typedef struct _VAEncMiscParameterBufferQualityLevel {
-    /** \brief Encoding quality level setting. */
+    /** \brief Encoding quality level setting. When set to 0, default quality
+     * level is used.
+     */
     unsigned int                quality_level;
 } VAEncMiscParameterBufferQualityLevel;