我正在使用专有DLL（CP5200.dll）与10个滚动消息LED标志进行通信。我正在使用openFrameworks生成并保存我想要显示的文本的图像，然后使用DLL将图像打包成符号可以处理的数据。
我每分钟调用几次以下函数，并返回2-4kb的文件，具体取决于图像大小，但在某个时刻 - 启动后大约3小时45分钟，它们开始返回128字节的文件，上传时会导致LED显示为空白。我假设dll中有一个缓冲区没有被清空，或类似的东西，但我无法理解反编译的代码。
以下是功能：
int CP5200_Program_AddPicture(HOBJECT hObj, int nWinNo, const char* pPictFile, int nMode, int nEffect, int nSpeed, int nStay, int nCompress)
int CP5200_Program_SaveToFile(HOBJECT hObj, const char* pFilename)
反编译功能：
Exported fn(): CP5200_Program_AddImage - Ord:00C3h
:1000FD20 51 push ecx
:1000FD21 55 push ebp
:1000FD22 8B6C240C mov ebp, dword ptr [esp+0C]
:1000FD26 85ED test ebp, ebp
:1000FD28 7508 jne 1000FD32
:1000FD2A 83C8FF or eax, FFFFFFFF
:1000FD2D 5D pop ebp
:1000FD2E 59 pop ecx
:1000FD2F C23000 ret 0030
功能完全拆解。我无法反编译。
:1000FC50 ; Exported entry 15. CP5200_Program_AddPicture
:1000FC50
:1000FC50 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
:1000FC50
:1000FC50
:1000FC50 public CP5200_Program_AddPicture
:1000FC50 CP5200_Program_AddPicture proc near
:1000FC50
:1000FC50 arg_0 = dword ptr 8
:1000FC50 arg_4 = dword ptr 0Ch
:1000FC50 arg_8 = dword ptr 10h
:1000FC50 arg_C = dword ptr 14h
:1000FC50 arg_10 = dword ptr 18h
:1000FC50 arg_14 = dword ptr 1Ch
:1000FC50 arg_18 = dword ptr 20h
:1000FC50 arg_1C = dword ptr 24h
:1000FC50
:1000FC50 push ebx
:1000FC51 mov ebx, [esp+arg_0]
:1000FC55 test ebx, ebx
:1000FC57 jnz short loc_1000FC60
:1000FC59 or eax, 0FFFFFFFFh
:1000FC5C pop ebx
:1000FC5D retn 20h
:1000FC60 ; ---------------------------------------------------------------------------
:1000FC60
:1000FC60 loc_1000FC60: ; CODE XREF: CP5200_Program_AddPicture+7j
:1000FC60 push esi
:1000FC61 push edi
:1000FC62 mov edi, ebx
:1000FC64 mov esi, offset aCprogram ; "CProgram"
:1000FC69 mov ecx, 9
:1000FC6E xor eax, eax
:1000FC70 repe cmpsb
:1000FC72 jz short loc_1000FC79
:1000FC74 sbb eax, eax
:1000FC76 sbb eax, 0FFFFFFFFh
:1000FC79
:1000FC79 loc_1000FC79: ; CODE XREF: CP5200_Program_AddPicture+22j
:1000FC79 test eax, eax
:1000FC7B jz short loc_1000FC86
:1000FC7D pop edi
:1000FC7E pop esi
:1000FC7F or eax, 0FFFFFFFFh
:1000FC82 pop ebx
:1000FC83 retn 20h
:1000FC86 ; ---------------------------------------------------------------------------
:1000FC86
:1000FC86 loc_1000FC86: ; CODE XREF: CP5200_Program_AddPicture+2Bj
:1000FC86 mov esi, [esp+8+arg_4]
:1000FC8A test esi, esi
:1000FC8C jl short loc_1000FD07
:1000FC8E mov ecx, ebx
:1000FC90 call sub_10018020
:1000FC95 cmp esi, eax
:1000FC97 jge short loc_1000FD07
:1000FC99 push esi
:1000FC9A mov ecx, ebx
:1000FC9C call sub_10018030
:1000FCA1 push 3Eh
:1000FCA3 mov edi, eax
:1000FCA5 call ??2@YAPAXI@Z ; operator new(uint)
:1000FCAA add esp, 4
:1000FCAD test eax, eax
:1000FCAF jz short loc_1000FCBE
:1000FCB1 mov ecx, eax
:1000FCB3 call sub_100012E0
:1000FCB8 mov esi, eax
:1000FCBA test esi, esi
:1000FCBC jnz short loc_1000FCC9
:1000FCBE
:1000FCBE loc_1000FCBE: ; CODE XREF: CP5200_Program_AddPicture+5Fj
:1000FCBE pop edi
:1000FCBF pop esi
:1000FCC0 mov eax, 0FFFFFFFCh
:1000FCC5 pop ebx
:1000FCC6 retn 20h
:1000FCC9 ; ---------------------------------------------------------------------------
:1000FCC9
:1000FCC9 loc_1000FCC9: ; CODE XREF: CP5200_Program_AddPicture+6Cj
:1000FCC9 mov eax, [esp+8+arg_8]
:1000FCCD push eax
:1000FCCE lea ecx, [esi+25h]
:1000FCD1 call sub_100076A0
:1000FCD6 mov ecx, [esp+8+arg_C]
:1000FCDA mov edx, [esp+8+arg_10]
:1000FCDE mov eax, [esp+8+arg_14]
:1000FCE2 mov [esi+2Ah], ecx
:1000FCE5 mov ecx, [esp+8+arg_18]
:1000FCE9 mov [esi+2Eh], edx
:1000FCEC mov edx, [esp+8+arg_1C]
:1000FCF0 mov [esi+36h], ecx
:1000FCF3 push esi
:1000FCF4 mov ecx, edi
:1000FCF6 mov [esi+32h], eax
:1000FCF9 mov [esi+3Ah], edx
:1000FCFC call sub_100015A0
:1000FD01 pop edi
:1000FD02 pop esi
:1000FD03 pop ebx
:1000FD04 retn 20h
:1000FD0F CP5200_Program_AddPicture endp
Exported fn(): CP5200_Program_SaveToFile - Ord:0013h
:1000CE80 8B542404 mov edx, dword ptr [esp+04]
:1000CE84 85D2 test edx, edx
:1000CE86 741F je 1000CEA7
:1000CE88 56 push esi
:1000CE89 57 push edi
:1000CE8A 8BFA mov edi, edx
:1000CE8C BE8C060610 mov esi, 1006068C
:1000CE91 B909000000 mov ecx, 00000009
:1000CE96 33C0 xor eax, eax
:1000CE98 F3 repz
:1000CE99 A6 cmpsb
:1000CE9A 5F pop edi
:1000CE9B 5E pop esi
:1000CE9C 7405 je 1000CEA3
:1000CE9E 1BC0 sbb eax, eax
:1000CEA0 83D8FF sbb eax, FFFFFFFF
我在VS 2012中写作，openframeworks版本为_v0.8.3_vs_release。
反编译代码是否提供了导致此行为的DLL中发生的任何线索？