vpx_roi_map: add delta range info

Change-Id: If2ef4400562075b4e7abadc01638a46c0c7f1859

diff --git a/vpx/vp8cx.h b/vpx/vp8cx.h
index 28bd861..47c38d3 100644 (file)
--- a/vpx/vp8cx.h
+++ b/vpx/vp8cx.h
@@ -808,8 +808,8 @@ typedef struct vpx_roi_map {
   unsigned int rows; /**< Number of rows. */
   unsigned int cols; /**< Number of columns. */
   /*! VP8 only uses the first 4 segments. VP9 uses 8 segments. */
-  int delta_q[8];  /**< Quantizer deltas. */
-  int delta_lf[8]; /**< Loop filter deltas. */
+  int delta_q[8];  /**< Quantizer deltas. Valid range: [-63, 63].*/
+  int delta_lf[8]; /**< Loop filter deltas. Valid range: [-63, 63].*/
   /*! skip and ref frame segment is only used in VP9. */
   int skip[8];      /**< Skip this block. */
   int ref_frame[8]; /**< Reference frame for this block. */