code: function decodeLineTransparencyRight(colors, frameData, frameReadOffset, decodeCount, zeroCount, palFile, setPixel) {
      // Total # of explicit pixels.
      var regularCount = decodeCount - zeroCount;
  
      // Implicit transparent pixels.
      for (var i = 0; i < regularCount; i++) {
          setPixel(colors, palFile.colors[frameData[frameReadOffset + i]]);
      }
  
      // Explicit transparent pixels (zeroes).
      for (i = 0; i < zeroCount; i++) {
          setPixel(colors, TRANSPARENT_COLOR);
      }
  
      // Explicit regular pixels.
      for (i = decodeCount; i < 32; i++) {
          setPixel(colors, TRANSPARENT_COLOR);
      }
  }
docs: Decodes a line of the frame, where decodeCount is the total # of
  explicit pixels, and zeroCount is the total # of explicit transparent
  pixels, and the rest of the line is implictly transparent.
  
  Each line is assumed to have a width of 32 pixels.