bufferIndex += 4;
        bufferIndex += 4; // Reserved2

        this.inputData = createInputDecodable();
        this.outputData = this.outputBuffer == null ? createOutputDecodable() : null;

        if ( this.inputData != null ) {
            this.inputData.decode(buffer, inputOffset, inputCount);
        }
        bufferIndex = Math.max(inputOffset + inputCount, bufferIndex);