* rocDecode/AV1: Fixed a bug in the calculation of the floor of the base 2 logarithm. (#367)

2024-06-10 14:02:10 -04:00
parent 63d3245176
commit ac272886b1
1 changed files with 2 additions and 1 deletions
@@ -430,12 +430,13 @@ protected:
     * \return the location of the most significant bit in x
     */
    inline uint32_t FloorLog2(uint32_t x) {
+        uint32_t saved_x = x;
        uint32_t s = 0;
        while (x != 0) {
            x = x >> 1;
            s++;
        }
-        return x ? s - 1 : 0;
+        return saved_x ? s - 1 : 0;
    }

    /*! \brief Function to read variable length unsigned n-bit number appearing directly in the bitstream. 4.10.3. uvlc().