Need urgent help

[arduino]

Hii all,

I want to play the samples continuosly without opening the sd card everytime. That means I want to play the samples from the buffer. I played samples continously but everytime I am opening the sd card. How to play
the samples from buffer?. Please find the attachment of the code. 

 

boolean buffill()
    {
      boolean ret = false;
      if (play)
      {

        // The buffer must be filled only if the previous buffer was finished to be read

        ret = true;
        // If we the sample read has arrived to the end of the file, we must 
          stop the sample reading

        if (possample >= (endofsample – bufsize))
        {
          closefile = true;

        }

        // OPEN FILE
        if (openfile)
        {
          myFile = SD.open(samplen, O_READ);
          size_t length1 =  myFile.read(&header, sizeof(header));       
          endofsample = header.chunk_size – bufsize;
          length1 = myFile.read(buf, sizeof(buf));
          possample = length1 + sizeof(header);
          openfile = false;
        }
        else
        {
          // CLOSE FILE
          myFile.close();
          play = false;

         }

      }
          return ret;

    }

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