Back to technical analysis page | Back to virtual memory overview
Attention: This page only addresses Filter Factory for Photoshop/Win32.
This data structure contains important parameters and is referenced as follows:
[PTR DS:[1C006004]] in Filter Factory 3.0.4 and 3.1.x for Photoshop for Windows.
[PTR DS:[1C008004]] in Filter Factory 3.00, 3.00a, and 3.00b for Photoshop for Windows.
[EDI] in the OPER context, defined by "prolog".
It is the *data pointer of the Filter Entrypoint method, that is kept by Photoshop to let the
plugin remember its internal state.
It is allocated using
GlobalAlloc in 3.00x and Plugin.Dll:NewPtr in 3.0.4 (which itself allocates
memory using GlobalAlloc).
The size is always 6638h (26168 bytes) for all versions of Filter Factory for
Windows/Photoshop.
The contents are:
| Offset | Length | Type | Description |
| EDI+0000h | 4 | int32 | r (Source) |
| EDI+0004h | 4 | int32 | g (Source) |
| EDI+0008h | 4 | int32 | b (Source) |
| EDI+000Ch | 4 | int32 | a (Source) |
| EDI+0010h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+0014h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+0018h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+001Ch | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+0020h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+0024h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+0028h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+002Ch | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+0030h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+0034h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+0038h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+003Ch | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+0040h | 4 | int32 | x |
| EDI+0044h | 4 | int32 | xmin |
| EDI+0048h | 4 | int32 | X |
| EDI+004Ch | 4 | int32 | y |
| EDI+0050h | 4 | int32 | ymin |
| EDI+0054h | 4 | int32 | Y |
| EDI+0058h | 4 | int32 | z |
| EDI+005Ch | 4 | int32 | zmin |
| EDI+0060h | 4 | int32 | Z |
| EDI+0064h | 20h | int32[8] | ctl[0..7] used by ctl() and val() |
| EDI+0084h | 4 | int32 | inRect left |
| EDI+0088h | 4 | int32 | inRect top |
| EDI+008Ch | 4 | int32 | inRect right |
| EDI+0090h | 4 | int32 | inRect bottom |
| EDI+0094h | 4 | uint16[2] | RND_INDEX_COUNTER[0..1] (0=add_idx, 1=sub_idx) used by rnd() |
| EDI+0098h | E0h | uint32[56] | RND_LOOKUP[0..55] used by rnd() |
| EDI+0178h | 100h | uint8[256] | map[0, 0..255] used by map(i,n) |
| EDI+0278h | 100h | uint8[256] | map[1, 0..255] used by map(i,n) |
| EDI+0378h | 100h | uint8[256] | map[2, 0..255] used by map(i,n) |
| EDI+0478h | 100h | uint8[256] | map[3, 0..255] used by map(i,n) |
| EDI+0578h | 800h | sint16[1024] | COS_LOOKUP[0..1023] lookup array used by cos(), sin(), r2x(), r2y(), tan(), rad() |
| EDI+0D78h | 800h | uint16[1024] | C2D_LOOKUP[0..1023]
lookup array used by d,
c2d() Calculation: C2D_LOOKUP[i] = Plugin.dll:FixATan2(1024, i+1); |
| EDI+1578h | 800h | uint16[1024] | C2M_LOOKUP[0..1023]
lookup array used by M,
m, c2m() Calculation: C2M_LOOKUP[i] = floor((sqrt(i*i + 1024*1024) - 1023.5) * 64); |
| EDI+1D78h | 800h? | uint16[1024]? | RESERVED (not found in the disassembly of any version) |
| EDI+2578h | 800h? | uint16[1024]? | RESERVED (not found in the disassembly of any version) |
| EDI+2D78h | 800h? | uint16[1024]? | RESERVED (not found in the disassembly of any version) |
| EDI+3578h | 400h | int32[256] | cell[0..255] used by get() and put() |
| EDI+3978h | 400h? | int32[256]? | RESERVED (not found in the disassembly of any version) |
| EDI+3D78h | 400h? | int32[256]? | RESERVED (not found in the disassembly of any version) |
| EDI+4178h | 400h? | int32[256]? | RESERVED (not found in the disassembly of any version) |
| EDI+4578h | 4 | uint32 | RND_SEED used (written) by rst() |
| EDI+457Ch | 4 | uint32 | RND_SEED_SAVE -- compared with RND_SEED in the executable in order to check if RND_LOOKUP needs to be initialized part |
| EDI+4580h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+4584h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+4588h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+458Ch | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+4590h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+4594h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+4598h | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+459Ch | 4? | int32? | RESERVED (not found in the disassembly of any version) |
| EDI+45A0h | 4 | int32 | Filter Record inRowBytes (ROW_SIZE used by cnv(), src(), rad()) |
| EDI+45A4h | 4 | int32 | Filter Record outRowBytes |
| EDI+45A8h | 4 | void* | Filter Record inData (Pointer to CANVAS used by cnv(), src(), rad()) |
| EDI+45ACh | 4 | int32 | Filter Record outData |
| EDI+45B0h | 4 | int32 | First working copy of inData |
| EDI+45B4h | 4 | int32 | First working copy of outData |
| EDI+45B8h | 4 | int32 | Second working copy of inData |
| EDI+45BCh | 4 | int32 | Second working copy of outData |
| EDI+45C0h | 4 | int32 | Flag set to 1 by FilterPrepare, and set to 0 in the first FilterStart invocation |
| EDI+45C4h | 4 | int32 | Flag that is set when an expression is changed, but not yet checked (will be checked in a timer procedure). |
| EDI+45C8h | 4 | int32 | Expression 0 (R) expression error flag |
| EDI+45CCh | 4 | int32 | Expression 1 (G) expression error flag |
| EDI+45D0h | 4 | int32 | Expression 2 (B) expression error flag |
| EDI+45D4h | 4 | int32 | Expression 3 (A) expression error flag |
| EDI+45D8h | 4 | int32 | Expression 0 (R) Error selection start pos (WParam of EM_SETSEL) |
| EDI+45DCh | 4 | int32 | Expression 1 (G) Error selection start pos (WParam of EM_SETSEL) |
| EDI+45E0h | 4 | int32 | Expression 2 (B) Error selection start pos (WParam of EM_SETSEL) |
| EDI+45E4h | 4 | int32 | Expression 3 (A) Error selection start pos (WParam of EM_SETSEL) |
| EDI+45E8h | 4 | int32 | Expression 0 (R) Error selection end pos (LParam of EM_SETSEL) |
| EDI+45ECh | 4 | int32 | Expression 1 (G) Error selection end pos (LParam of EM_SETSEL) |
| EDI+45F0h | 4 | int32 | Expression 2 (B) Error selection end pos (LParam of EM_SETSEL) |
| EDI+45F4h | 4 | int32 | Expression 3 (A) Error selection end pos (LParam of EM_SETSEL) |
| EDI+45F8h | 4 | size_t | Size of compiled r assembly code |
| EDI+45FCh | 4 | size_t | Size of compiled g assembly code |
| EDI+4600h | 4 | size_t | Size of compiled b assembly code |
| EDI+4604h | 4 | size_t | Size of compiled a assembly code |
| EDI+4608h | 800h | byte[2048] | Compiled code for r processing. The formula includes "prolog" and "epilog", all together in assembly code. |
| EDI+4E08h | 800h | byte[2048] | Compiled code for g processing. The formula includes "prolog" and "epilog", all together in assembly code. |
| EDI+5608h | 800h | byte[2048] | Compiled code for b processing. The formula includes "prolog" and "epilog", all together in assembly code. |
| EDI+5E08h | 800h | byte[2048] | Compiled code for a processing. The formula includes "prolog" and "epilog", all together in assembly code. |
| EDI+6608h | 4 | void* | Pointer to the "PARM" location |
| EDI+660Ch | 4 | void* | Pointer that holds the new "PARM" structure when a filter is built. |
| EDI+6610h | 4 | handle | Window handle |
| EDI+6614h | 21h | char[33] | Position where the filtername (without .8bf) will be written to! (Zero-Terminated string) |
| EDI+6635h | 3 | byte[3] | Padding |