File content as of revision 3:1fcb46ab18df:

/**
*  @file PIMAArray.h
*  @brief PIMA Array class definition
*  @author Dwayne Dilbeck
*  @date 8/23/2013
* 
* mbed USBHostPTP Library(PIMA15740 Array definition)
* @par Copyright:
*  Copyright (c) 2013 Dwayne Dilbeck
* @par License:
*  This software is distributed under the terms of the GNU Lesser General Public License
*/

/**
*  Class PIMA array
*
*  The PIMA15740 standard defines an array as an unsigned 32bit number of elements followed by a list
*   of insinged 16bit codes;
*/
class PIMAArray {
public:
  /**
  *   Constructor
  *  @param None
  *
  *   Zeros the number of elements and sets codes pointer to NUll
  */
  PIMAArray() {
     numberOfElements=0;
     codes=NULL;
  };
  
  /**
  * Destructor
  *
  * Frees assigned storage for codes.
  * @param None
  */
  ~PIMAArray() {
    if( codes !=NULL)
        free(codes);
  };

  /**
   *  Create and fill array storage from a supplied buffer pointer
   *
   *  @param currentPtr a unit8_t pointer to a buffer location where a PIMAArray should be read
   *  
   *  @return The number of bytes used from the buffer to create the PIMA array.
   */
 int FillArray(uint8_t *currentPtr) {
     SetNumberOfElements(*((uint32_t *)currentPtr));
     SetCodes((uint16_t *)(currentPtr+4));
     return (2*numberOfElements) + 4;
}

   ///Number of elelments stored in the array
   uint32_t numberOfElements;
   ///Pointer to Code storage
   uint16_t *codes;

private:
/**
 * Function to allocate array storage space and set the number of elements
 *
 * @param uint8_t The number of elements to create storage space for.
 * @return none
 */
 void SetNumberOfElements(uint8_t length) {
     this->numberOfElements=length;
     if( codes !=NULL)
        free(codes);
     codes = (uint16_t *) malloc(sizeof(uint16_t)*length);
 };
 
 /**
 * Function to read codes form a uint8t buffer and store them.
 * @param buffer pointer to a uint8_t buffer
 */
 void SetCodes(uint16_t *buffer){
     if(buffer!=NULL && codes !=NULL)
       for(int i=0;i<this->numberOfElements;i++)
           codes[i]=buffer[i];
 };
  
};