3dbrew - User contributions [en]

Talk:Phtcache.bin

2011-04-11T00:16:14Z

Pcdude2143: Created page with "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 t..."

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)

Phtcache.bin

2011-04-11T00:13:34Z

Pcdude2143:

<pre>00000-00007: Header 1UJQ00_1
00008-0000B: Number of pictures plus 1 (why?)
0000C-00011: Unknown value (seems to be static?) B80B01000000
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)
00018-0001B: Preferred image file format. Should be MPO\x00 or JPG\x00. The inner cam is the only
one that will yield JPG. 3D pictures are taken even with screen switched to 2D.
0001C-00023: Name of image
00024-0002B: Subfolder of image
0002C-00033: Time taken based on "DS epoch" (start of 1/1/2000) (UNIX+946684800)
00034-00037: Time last viewed?
0003C-0003F: UNKNOWN
00040-00043: UNKNOWN
00044-00045: UNKNOWN
00046-00047: UNKNOWN
00048-0004B: UNKNOWN
00058-0005B: File size

</pre>

Phtcache.bin

2011-04-11T00:13:13Z

Pcdude2143: Created page with "<nowiki><pre>00000-00007: Header 1UJQ00_1 00008-0000B: Number of pictures plus 1 (why?) 0000C-00011: Unknown value (seems to be static?) B80B01000000 00012-00013: Total number of..."

<nowiki><pre>00000-00007: Header 1UJQ00_1
00008-0000B: Number of pictures plus 1 (why?)
0000C-00011: Unknown value (seems to be static?) B80B01000000
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)
00018-0001B: Preferred image file format. Should be MPO\x00 or JPG\x00. The inner cam is the only
one that will yield JPG. 3D pictures are taken even with screen switched to 2D.
0001C-00023: Name of image
00024-0002B: Subfolder of image
0002C-00033: Time taken based on "DS epoch" (start of 1/1/2000) (UNIX+946684800)
00034-00037: Time last viewed?
0003C-0003F: UNKNOWN
00040-00043: UNKNOWN
00044-00045: UNKNOWN
00046-00047: UNKNOWN
00048-0004B: UNKNOWN
00058-0005B: File size

</pre></nowiki>

SD Filesystem

2011-04-11T00:10:01Z

Pcdude2143:

The 3DS uses an SD Card for general storage of additional game data and photos taken with the 3DS.

/DCIM - Photos
/Nintendo 3DS - Game Data

Additional game data is stored here:

/Nintendo 3DS/<SomeID>/<SomeID>/extdata/00000000

0000033c - Super Streetfighter IV 3D - EUR
0000034d - Samurai Warriors Chronicles - USA
0000033b - Ridge Racer 3D - EUR
00000358 - Ridge Racer 3D - USA
0000022d - Face Raiders - EUR
00000227 - Mii Plaza - EUR
0000020d - 顔シューティング - JPN
00000207 - すれちがいMii広場 - JPN
All "extra data" under extdata is encrypted. Although these files use 0xFF blocks similar to EEPROM [[Savegames|saves]], extdata can't be decrypted with the xorpad fail like EEPROM saves. All "extra data" files can't be copied to other 3DS SD cards, they are locked to the console.

"Private" data is stored here:

/Nintendo 3DS/Private/<Title ID Low>/

00020500 - Nintendo 3DS Sound
00020400 - Nintendo 3DS Camera

"Private" data for 3DS Sound/Camera are cleartext.
Under the camera priv dir is [[phtcache.bin]], this seems to list the pictures on SD card?
Under the sound priv dir is: voice/XX/*.m4a. Where XX is 01-10, with sound saved as .m4a.