static MagickBooleanType InsertRow(int bpp,unsigned char *p,ssize_t y,
  Image *image)
{
  ExceptionInfo
    *exception;

  int
    bit;

  ssize_t
    x;

  register PixelPacket
    *q;

  IndexPacket
    index;

  register IndexPacket
    *indexes;

  exception=(&image->exception);
  q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
  if (q == (PixelPacket *) NULL)
    return(MagickFalse);
  indexes=GetAuthenticIndexQueue(image);
  switch (bpp)
    {
    case 1:  /* Convert bitmap scanline. */
      {
        for (x=0; x < ((ssize_t) image->columns-7); x+=8)
          {
            for (bit=0; bit < 8; bit++)
              {
                index=((*p) & (0x80 >> bit) ? 0x01 : 0x00);
                SetPixelIndex(indexes+x+bit,index);
                if (index < image->colors)
                  SetPixelRGBO(q,image->colormap+(ssize_t) index);
                q++;
              }
            p++;
          }
        if ((image->columns % 8) != 0)
          {
            for (bit=0; bit < (ssize_t) (image->columns % 8); bit++)
              {
                index=((*p) & (0x80 >> bit) ? 0x01 : 0x00);
                SetPixelIndex(indexes+x+bit,index);
                if (index < image->colors)
                  SetPixelRGBO(q,image->colormap+(ssize_t) index);
                q++;
              }
            p++;
          }
        break;
      }
    case 2:  /* Convert PseudoColor scanline. */
      {
        if ((image->storage_class != PseudoClass) ||
            (indexes == (IndexPacket *) NULL))
          break;
        for (x=0; x < ((ssize_t) image->columns-3); x+=4)
        {
            index=ConstrainColormapIndex(image,(*p >> 6) & 0x3);
            SetPixelIndex(indexes+x,index);
            if (index < image->colors)
              SetPixelRGBO(q,image->colormap+(ssize_t) index);
            q++;
            index=ConstrainColormapIndex(image,(*p >> 4) & 0x3);
            SetPixelIndex(indexes+x,index);
            if (index < image->colors)
              SetPixelRGBO(q,image->colormap+(ssize_t) index);
            q++;
            index=ConstrainColormapIndex(image,(*p >> 2) & 0x3);
            SetPixelIndex(indexes+x,index);
            if (index < image->colors)
              SetPixelRGBO(q,image->colormap+(ssize_t) index);
            q++;
            index=ConstrainColormapIndex(image,(*p) & 0x3);
            SetPixelIndex(indexes+x+1,index);
            if (index < image->colors)
              SetPixelRGBO(q,image->colormap+(ssize_t) index);
            q++;
            p++;
        }
       if ((image->columns % 4) != 0)
          {
            index=ConstrainColormapIndex(image,(*p >> 6) & 0x3);
            SetPixelIndex(indexes+x,index);
            if (index < image->colors)
              SetPixelRGBO(q,image->colormap+(ssize_t) index);
            q++;
            if ((image->columns % 4) > 1)
              {
                index=ConstrainColormapIndex(image,(*p >> 4) & 0x3);
                SetPixelIndex(indexes+x,index);
                if (index < image->colors)
                  SetPixelRGBO(q,image->colormap+(ssize_t) index);
                q++;
                if ((image->columns % 4) > 2)
                  {
                    index=ConstrainColormapIndex(image,(*p >> 2) & 0x3);
                    SetPixelIndex(indexes+x,index);
                    if (index < image->colors)
                      SetPixelRGBO(q,image->colormap+(ssize_t) index);
                    q++;
                  }
              }
            p++;
          }
        break;
      }

    case 4:  /* Convert PseudoColor scanline. */
      {
        for (x=0; x < ((ssize_t) image->columns-1); x+=2)
          {
            index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f);
            SetPixelIndex(indexes+x,index);
            if (index < image->colors)
              SetPixelRGBO(q,image->colormap+(ssize_t) index);
            q++;
            index=ConstrainColormapIndex(image,(*p) & 0x0f);
            SetPixelIndex(indexes+x+1,index);
            if (index < image->colors)
              SetPixelRGBO(q,image->colormap+(ssize_t) index);
            p++;
            q++;
          }
        if ((image->columns % 2) != 0)
          {
            index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f);
            SetPixelIndex(indexes+x,index);
            if (index < image->colors)
              SetPixelRGBO(q,image->colormap+(ssize_t) index);
            p++;
            q++;
          }
        break;
      }
    case 8: /* Convert PseudoColor scanline. */
      {
        for (x=0; x < (ssize_t) image->columns; x++)
          {
            index=ConstrainColormapIndex(image,*p);
            SetPixelIndex(indexes+x,index);
            if (index < image->colors)
              SetPixelRGBO(q,image->colormap+(ssize_t) index);
            p++;
            q++;
          }
      }
      break;

    case 24:     /*  Convert DirectColor scanline.  */
      for (x=0; x < (ssize_t) image->columns; x++)
        {
          SetPixelRed(q,ScaleCharToQuantum(*p++));
          SetPixelGreen(q,ScaleCharToQuantum(*p++));
          SetPixelBlue(q,ScaleCharToQuantum(*p++));
          q++;
        }
      break;
    }
  if (!SyncAuthenticPixels(image,exception))
    return(MagickFalse);
  return(MagickTrue);
}