3dbrew - User contributions [en]

Phtcache.bin

2013-03-21T23:13:08Z

Safirion:

<pre>File header:
00000-00007: Header 1UJQ00_1
00008-0000B: Number of pictures plus 1 (why?)
0000C-00011: Unknown static value : B8-0B-01-00-00-00
00012-00013: Total number of photos (excluding 2D dups)
00014-00017: Appears to be file size. It's only 32 bits = 4GB max. A few hundred K
larger than the actual size of every file in DCIM (?)
1607971 vs DCIM/100NIN = 1441792 vs DCIM = 147560 vs files = 1409024
vs non-disk usage = 1224857
phtcache non-disk = 456024, disk = 458752
phtcache (non) + files (non) = 1680881 - 1607971 = 72910 = 72K hmm...
maybe the 72910 is some kind of checksum?
( I have no clue, all these notes were probably worthless)

From 0x0018, one block per picture. Each block is 0x152 bytes long and formatted as such:
00000-00003: Preferred image file format. Should be MPO\x00, JPG\x00 or AVI\x00.
00004-0000B: Name of image
0000C-00013: Subfolder of image
00014-0001B: Time taken based on "DS epoch" (start of 1/1/2000) (UNIX+946684800)
0001C-00023: Time last viewed?
00024-00027: UNKNOWN
00028-0002B: UNKNOWN
0002C-0002D: UNKNOWN
0002E-0002F: UNKNOWN
00030-0003F: UNKNOWN
00040-00043: File size

</pre>

== File Header ==
{| class="wikitable" border="1"
|-
! Name
! Size
! Description
|-
| Unknown
| 0x08
| always 1UJQ00_1
|-
| Number of Pictures
| 0x04
|
|-
| Unknown
| 0x06
| Always B8-0B-01-00-00-00
|-
| Total number of photos
| 0x02
| excluding 2D dups
|-
| Unknown
| 0x06
| File size ?
|-
| Pictures Property
| 0x152 * Number of Pictures
| Index refereed by 3DS Camera
|-
|}

== Pictures Property ==
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| Extension
| 0x04
|
|-
|}

== Infos ==

'''The file seems to be guards against all external changes.'''

Talk:Phtcache.bin

2013-03-21T13:40:19Z

Safirion:

Yes, I know. This page is a mess. I just thought throwing this out there would be helpful to somebody. Right now I'm trying to figure out if I can get the 3DS camera program to take a file it didn't create. [[User:Pcdude2143|Pcdude2143]] 04:16, 11 April 2011 (CEST)

: Yes, the 3DS camera program will take a file it didn't create. It just has to follow similar naming conventions as the files the 3DS camera writes (though the letters and numbers can be different). [[User:Balrog|Balrog]] 18:33, 11 April 2011 (CEST)

I've seen this page, although very useful, was not updated when I wanted to create a utility for changing the phtcache.bin. So soon I will update this if I see past oversights or errors. It seems that the layout file phtcache.bin have changed since the last update of this page. Blocks of information on image / video are now 152 bytes and not 98.
Sorry for my bad English. [[User:Safirion|Safirion]] 15:39, 21 March 2013 (GTM + 1)

Talk:Phtcache.bin

2013-03-21T13:39:18Z

Safirion:

Talk:Phtcache.bin

2013-03-21T13:38:48Z

Safirion: /* Update */ new section

Yes, I know. This page is a mess. I just thought throwing this out there would be helpful to somebody. Right now I'm trying to figure out if I can get the 3DS camera program to take a file it didn't create. [[User:Pcdude2143|Pcdude2143]] 04:16, 11 April 2011 (CEST)

: Yes, the 3DS camera program will take a file it didn't create. It just has to follow similar naming conventions as the files the 3DS camera writes (though the letters and numbers can be different). [[User:Balrog|Balrog]] 18:33, 11 April 2011 (CEST)

== Update ==

I've seen this page, although very useful, was not updated when I wanted to create a utility for changing the phtcache.bin. So soon I will update this if I see past oversights or errors. It seems that the layout file phtcache.bin have changed since the last update of this page. Blocks of information on image / video are now 152 bytes and not 98.
Sorry for my bad English.

Phtcache.bin

2013-03-21T13:03:55Z

Safirion: /* File Header */

Phtcache.bin

2013-03-21T13:02:26Z

Safirion:

<pre>File header:
00000-00007: Header 1UJQ00_1
00008-0000B: Number of pictures plus 1 (why?)
0000C-00011: Unknown static value : B8-0B-01-00-00-00
00012-00013: Total number of photos (excluding 2D dups)
00014-00017: Appears to be file size. It's only 32 bits = 4GB max. A few hundred K
larger than the actual size of every file in DCIM (?)
1607971 vs DCIM/100NIN = 1441792 vs DCIM = 147560 vs files = 1409024
vs non-disk usage = 1224857
phtcache non-disk = 456024, disk = 458752
phtcache (non) + files (non) = 1680881 - 1607971 = 72910 = 72K hmm...
maybe the 72910 is some kind of checksum?
( I have no clue, all these notes were probably worthless)

From 0x0018, one block per picture. Each block is 0x152 bytes long and formatted as such:
00000-00003: Preferred image file format. Should be MPO\x00, JPG\x00 or AVI\x00.
00004-0000B: Name of image
0000C-00013: Subfolder of image
00014-0001B: Time taken based on "DS epoch" (start of 1/1/2000) (UNIX+946684800)
0001C-00023: Time last viewed?
00024-00027: UNKNOWN
00028-0002B: UNKNOWN
0002C-0002D: UNKNOWN
0002E-0002F: UNKNOWN
00030-0003F: UNKNOWN
00040-00043: File size

</pre>

== File Header ==
{| class="wikitable" border="1"
|-
! Name
! Size
! Description
|-
| Unknown
| 0x08
| always 1UJQ00_1
|-
| Number of Pictures
| 0x04
|
|-
| Unknown
| 0x06
| seems to be static?
|-
| Total number of photos
| 0x02
| excluding 2D dups
|-
| Unknown
| 0x06
| File size?
|-
| Pictures Property
| 0x152 * Number of Pictures
| Index refereed by 3DS Camera
|-
|}

== Pictures Property ==
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| Extension
| 0x04
|
|-
|}