Phtcache.bin: Difference between revisions
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== File Header == | |||
{| class="wikitable" border="1" | |||
|- | |||
! Offset | |||
! Size | |||
! Description | |||
|- | |||
| 0x0 | |||
| 0x8 | |||
| Always "1UJQ00_1" | |||
|- | |||
| 0x8 | |||
| 0x4 | |||
| Number of Pictures + 1 | |||
|- | |||
| 0xC | |||
| 0x2 | |||
| Total number of photo entries(including unused entries) stored here, this is normally value 3000 (500 on NAND). | |||
|- | |||
| 0xE | |||
| 0x2 | |||
| This u16 must be < 2, this is normally value 1 (0 for NAND). | |||
|- | |||
| 0x10 | |||
| 0x2 | |||
| Unknown, normally value zero. | |||
|- | |||
| 0x12 | |||
| 0x2 | |||
| Total number of photos(used entries), excluding 2D dups. | |||
|- | |||
| 0x14 | |||
| 0x2 | |||
| CRC16 over the entire file with this CRC field set to zero when calculating the CRC, with initialval=0 and polynomial=0xA001. | |||
|- | |||
| 0x16 | |||
| 0x2 | |||
| Size of this header, must be >=0x18(this is always value 0x18). | |||
|- | |||
| 0x18 | |||
| 0x98 * Number of Pictures | |||
| Pictures Property, index refereed by 3DS Camera | |||
|} | |||
The phtcache.bin actual filesize must be at least the following size: hdrsizefield + totalstoredentries*0x98. | |||
== Pictures Property == | |||
{| class="wikitable" border="1" | |||
|- | |||
! Offset | |||
! Size | |||
! Description | |||
|- | |||
| 0x0 | |||
| 0x04 | |||
| Null-terminated file extension: MPO, JPG, or AVI. | |||
|- | |||
| 0x4 | |||
| 0x8 | |||
| Image file name, without the extension. | |||
|- | |||
| 0xC | |||
| 0x8 | |||
| Directory name under the DCIM directory. | |||
|- | |||
| 0x14 | |||
| 0x4 | |||
| Time taken based on "DS epoch" (start of 1/1/2000) (UNIX+946684800) | |||
|- | |||
| 0x1C | |||
| 0x4 | |||
| Time last viewed? | |||
|- | |||
| 0x24 | |||
| 0x4 | |||
| ? | |||
|- | |||
| 0x28 | |||
| 0x4 | |||
| ? | |||
|- | |||
| 0x2C | |||
| 0x4 | |||
| ? | |||
|- | |||
| 0x30 | |||
| 0x4 | |||
| ? | |||
|- | |||
| 0x34 | |||
| 0x4 | |||
| ? | |||
|- | |||
| 0x38 | |||
| 0x4 | |||
| ? | |||
|- | |||
| 0x3C | |||
| 0x4 | |||
| ? | |||
|- | |||
| 0x40 | |||
| 0x4 | |||
| File size | |||
|- | |||
| 0x50 | |||
| 0x18*4 | |||
| 4 blocks, where each block is 0x18-bytes. | |||
|} | |||
Latest revision as of 19:10, 11 December 2014
File Header
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x8 | Always "1UJQ00_1" |
| 0x8 | 0x4 | Number of Pictures + 1 |
| 0xC | 0x2 | Total number of photo entries(including unused entries) stored here, this is normally value 3000 (500 on NAND). |
| 0xE | 0x2 | This u16 must be < 2, this is normally value 1 (0 for NAND). |
| 0x10 | 0x2 | Unknown, normally value zero. |
| 0x12 | 0x2 | Total number of photos(used entries), excluding 2D dups. |
| 0x14 | 0x2 | CRC16 over the entire file with this CRC field set to zero when calculating the CRC, with initialval=0 and polynomial=0xA001. |
| 0x16 | 0x2 | Size of this header, must be >=0x18(this is always value 0x18). |
| 0x18 | 0x98 * Number of Pictures | Pictures Property, index refereed by 3DS Camera |
The phtcache.bin actual filesize must be at least the following size: hdrsizefield + totalstoredentries*0x98.
Pictures Property
| Offset | Size | Description |
|---|---|---|
| 0x0 | 0x04 | Null-terminated file extension: MPO, JPG, or AVI. |
| 0x4 | 0x8 | Image file name, without the extension. |
| 0xC | 0x8 | Directory name under the DCIM directory. |
| 0x14 | 0x4 | Time taken based on "DS epoch" (start of 1/1/2000) (UNIX+946684800) |
| 0x1C | 0x4 | Time last viewed? |
| 0x24 | 0x4 | ? |
| 0x28 | 0x4 | ? |
| 0x2C | 0x4 | ? |
| 0x30 | 0x4 | ? |
| 0x34 | 0x4 | ? |
| 0x38 | 0x4 | ? |
| 0x3C | 0x4 | ? |
| 0x40 | 0x4 | File size |
| 0x50 | 0x18*4 | 4 blocks, where each block is 0x18-bytes. |