ImageKit: what format does memory mode on 10.7 use?

  • When I use memory transfer mode on 10.8 , ImageKit calls my scannerDevice:didScanToURL:data: with an NSData object containing TIFF data that can be used with +[NSBitmapImageRep initWithData:].

    When I try the same thing on 10.7, the NSData isn't TIFF, it looks like this:

    $ hexdump -C -n 256  ~/Desktop/Canon-MG4220mystery
    00000000  70 00 00 00 01 00 00 00  f0 09 00 00 e7 0c 00 00  |p...............|
    00000010  d0 1d 00 00 01 00 00 00  08 00 00 00 18 00 00 00  |................|
    00000020  01 00 00 00 00 00 00 00  01 00 00 00 2c 01 00 00  |............,...|
    00000030  73 63 61 6e 6e 65 72 2e  72 65 66 6c 65 63 74 69  |scanner.reflecti|
    00000040  76 65 2e 52 47 42 2e 70  6f 73 69 74 69 76 65 00  |ve.RGB.positive.|
    00000050  ee ee ed f0 ee ed ed ef  ee ef ee ee f0 ed ed ef  |................|
    00000060  ed ea e9 f0 ed ed ee ee  ef ef ed ee ec eb f0 eb  |................|
    00000070  21 20 22 21 20 22 20 1f  22 23 23 22 22 20 22 23  |! "! " ."##"" "#|
    00000080  24 23 24 25 23 27 2a 2b  53 53 4d a6 9e 9d dc dd  |$#$%#'*+SSM.....|
    00000090  df ea e7 e7 ea ea e9 ea  eb eb eb eb ef ea ed eb  |................|
    000000a0  ed eb ea eb eb e9 ea ea  ea eb ea ec ec ed ec ed  |................|
    000000b0  ea ec ec ec ec ed ea eb  ee eb eb e9 ea eb ed ed  |................|
    000000c0  ec ef eb eb ed ed ed ec  ea ed eb eb eb eb ed ec  |................|
    000000d0  ee e9 ea e6 e4 eb ed ea  ec ec eb ed ee ea ec ef  |................|
    000000e0  eb ec ed eb ea ec ea ed  eb e9 eb ec eb ed ed ee  |................|
    000000f0  ee ef ed ec ee ec ec ef  eb ed ee ec ed ee ea ea  |................|

    What format is this?

    Or better, How can I tell ImageKit that I want TIFF data?

    Thanks in advance!
  • This is reported as rdar://13966809

    On May 22, 2013, at 3:24 PM, Eric Slosser <eric.slosser...> wrote:

    > When I use memory transfer mode on 10.8 , ImageKit calls my scannerDevice:didScanToURL:data: with an NSData object containing TIFF data that can be used with +[NSBitmapImageRep initWithData:].
    >
    > When I try the same thing on 10.7, the NSData isn't TIFF, it looks like this:
    >
    > $ hexdump -C -n 256  ~/Desktop/Canon-MG4220mystery
    > 00000000  70 00 00 00 01 00 00 00  f0 09 00 00 e7 0c 00 00  |p...............|
    > 00000010  d0 1d 00 00 01 00 00 00  08 00 00 00 18 00 00 00  |................|
    > 00000020  01 00 00 00 00 00 00 00  01 00 00 00 2c 01 00 00  |............,...|
    > 00000030  73 63 61 6e 6e 65 72 2e  72 65 66 6c 65 63 74 69  |scanner.reflecti|
    > 00000040  76 65 2e 52 47 42 2e 70  6f 73 69 74 69 76 65 00  |ve.RGB.positive.|
    > 00000050  ee ee ed f0 ee ed ed ef  ee ef ee ee f0 ed ed ef  |................|
    > 00000060  ed ea e9 f0 ed ed ee ee  ef ef ed ee ec eb f0 eb  |................|
    > 00000070  21 20 22 21 20 22 20 1f  22 23 23 22 22 20 22 23  |! "! " ."##"" "#|
    > 00000080  24 23 24 25 23 27 2a 2b  53 53 4d a6 9e 9d dc dd  |$#$%#'*+SSM.....|
    > 00000090  df ea e7 e7 ea ea e9 ea  eb eb eb eb ef ea ed eb  |................|
    > 000000a0  ed eb ea eb eb e9 ea ea  ea eb ea ec ec ed ec ed  |................|
    > 000000b0  ea ec ec ec ec ed ea eb  ee eb eb e9 ea eb ed ed  |................|
    > 000000c0  ec ef eb eb ed ed ed ec  ea ed eb eb eb eb ed ec  |................|
    > 000000d0  ee e9 ea e6 e4 eb ed ea  ec ec eb ed ee ea ec ef  |................|
    > 000000e0  eb ec ed eb ea ec ea ed  eb e9 eb ec eb ed ed ee  |................|
    > 000000f0  ee ef ed ec ee ec ec ef  eb ed ee ec ed ee ea ea  |................|
    >
    > What format is this?
    >
    > Or better, How can I tell ImageKit that I want TIFF data?
previous month may 2013 next month
MTWTFSS
    1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31    
Go to today