Adaptively deriving rice parameter values for high bit-depth video coding

A device for binarizing or inverse binarizing video data, the device comprising:

• a memory configured to store video data;
• and
• a processing system comprising one or more processors implemented in circuitry, the processing system being configured to:
• calculate an intermediate local sum of absolute values (intermediateLocSumAbs value) of neighboring coefficients to a current coefficient of a current block of video data;
• derive a shift value from the intermediateLocSumAbs value;
• calculate a normalized locSumAbs value using the intermediateLocSumAbs value and the shift value, wherein to calculate the normalized locSumAbs value, the processing system is configured to calculate intermediateLocSumAbs>>shift, wherein shift represents the shift value;
• determine a Rice parameter using the normalized locSumAbs value;
• and
• binarize or inverse binarize the current coefficient using the Rice parameter.

A device for decoding video data, the device comprising:

• means for calculating an intermediate local sum of absolute values (intermediateLocSumAbs value) of neighboring coefficients to a current coefficient of a current block of video data;
• means for deriving a shift value from the intermediateLocSumAbs value;
• means for calculating a normalized locSumAbs value using the shift value, including means for calculating the normalized locSumAbs value according to intermediateLocSumAbs>>shift, wherein shift represents the shift value;
• means for determining a Rice parameter using the normalized locSumAbs value;
• and
• means for decoding the video data using the Rice parameter.