2003.04.29 16:12 "Newbie Question (StripOffsets/StripByteCount)", by
Harring Figueiredo
Thread
2003.04.29 19:51 "RE: Newbie Question (StripOffsets/StripByteCount)", by John Carter
Hi Harring
I think I'm right in making a correction to your condition. I think it should be ( count * size_of_type >= 4) rather than ( count * size_of_type > 4)
I made that mistake too, and it took me a while to spot it.
also (on slightly related point)
don't forget to cast the ifd_entry.value_offset
such as compression below, switching on ifd_entry.value_offset
directly can give you some strange results.
case COMPRESSION:
tiff_data->compression = (TIFF_SHORT)ifd_entry.value_offset;
if(DEBUG&LOAD_PAGE_DEBUG){
printf("COMPRESSION:\n");
switch(tiff_data->compression){
case 1:
printf(" Image is not compressed\n");
break;
case 2:
printf(" Uses 1d Huffman run length encoding\n");
break;
case 3:
printf(" T4 Bilevel compression\n");
break;
case 4:
printf(" T6 Bilevel compression\n");
break;
case 5:
printf(" LZW compression\n");
break;
case 6:
printf(" JPEG compression\n");
break;
case 32773:
printf(" PackBits on Raster image data\n");
break;
default:
printf(" No case for compression type %d\n",
ifd_entry.value_offset);
printf(" in file %s %d\n",__FILE__,__LINE__);
break;
}
}
break;