Function at 0x490830
Capabilities:
Create thread
Resume thread

Disassembly:
mov eax, dword [esp + 8]
sub esp, 8
cmp eax, 0x24
push ebx
push ebp
push esi
push edi
jl 0x49094d
mov edi, str.RIFF
or ecx, 0xffffffff
xor eax, eax
mov esi, dword [esp + 0x1c]
repne scasb al, byte es:[edi]
not ecx
dec ecx
push ecx
push str.RIFF
push esi
call fcn.004eafa0
add esp, 0xc
test eax, eax
jne 0x49094d
mov eax, dword [esi + 4]
mov edi, str.WAVE
mov dword [esp + 0x14], eax
or ecx, 0xffffffff
xor eax, eax
add esi, 8
repne scasb al, byte es:[edi]
not ecx
dec ecx
push ecx
push str.WAVE
push esi
call fcn.004eafa0
add esp, 0xc
test eax, eax
jne 0x49094d
mov ecx, dword [esp + 0x1c]
xor ebx, ebx
xor esi, esi
xor ebp, ebp
lea edi, [ecx + 0xc]
mov dword [esp + 0x10], edi
mov edx, dword [edi + 4]
push 4
push str.fmt
push edi
mov dword [esp + 0x28], edx
call fcn.004eafa0
add esp, 0xc
test eax, eax
jne 0x4908d3
test esi, esi
lea ebx, [edi + 8]
jne 0x49090a
jmp 0x4908f2
push 4
push 0x81d1ac
push edi
call fcn.004eafa0
add esp, 0xc
test eax, eax
jne 0x4908f2
mov ebp, dword [esp + 0x1c]
lea esi, [edi + 8]
test ebx, ebx
jne 0x49090e
mov eax, dword [esp + 0x1c]
mov edx, dword [esp + 0x10]
lea edi, [edi + eax + 8]
mov eax, dword [esp + 0x14]
mov ecx, edi
sub ecx, edx
cmp ecx, eax
jb 0x4908af
test ebx, ebx
je 0x49094d
test esi, esi
je 0x49094d
test ebp, ebp
jbe 0x49094d
push 0x4c
call fcn.004fbef4
mov dword [esp + 0x24], eax
mov dword [eax + 8], ebp
mov edx, dword [esp + 0x24]
mov eax, dword [edx + 8]
push eax
call fcn.004ec437
mov ecx, dword [esp + 0x28]
add esp, 8
mov dword [ecx], eax
mov eax, dword [esp + 0x20]
mov edi, dword [eax]
test edi, edi
jne 0x490957
push eax
call fcn.004fbf1d
add esp, 4
pop edi
pop esi
pop ebp
xor eax, eax
pop ebx
add esp, 8
ret
mov ecx, ebp
push 0x14
mov edx, ecx
push 0x3c00
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov eax, dword [esp + 0x28]
mov ecx, dword [esp + 0x2c]
mov dword [eax + 0x48], ecx
mov edx, dword [esp + 0x28]
mov dword [edx + 0x1c], 0
call fcn.00490620
mov ecx, dword [esp + 0x28]
add esp, 8
push 0
push 0
push 1
push 0
mov dword [ecx + 0xc], eax
call dword [sym.imp.KERNEL32.dll_CreateEventA]
mov edx, dword [esp + 0x20]
push 0
push 0x14
push 0x14
push 0
mov dword [edx + 0x2c], eax
call dword [sym.imp.KERNEL32.dll_CreateSemaphoreA]
mov ecx, dword [esp + 0x20]
mov dword [ecx + 0x28], eax
mov edx, dword [esp + 0x20]
mov dword [edx + 0x14], 0
mov eax, dword [esp + 0x20]
mov dword [eax + 0x10], 0x14
mov ecx, dword [esp + 0x20]
add ecx, 0x30
push ecx
call dword [sym.imp.KERNEL32.dll_InitializeCriticalSection]
mov eax, dword [esp + 0x20]
push 0x490e60
push eax
add eax, 4
push ebx
push eax
call fcn.00490690
mov eax, dword [esp + 0x30]
add esp, 0x10
mov edi, 4
lea edx, [eax + 0x24]
push edx
push edi
push eax
push 0x490c10
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateThread]
mov ecx, dword [esp + 0x20]
push 0x83b548
mov dword [ecx + 0x20], eax
call dword [sym.imp.KERNEL32.dll_EnterCriticalSection]
mov eax, dword [0x83b568]
mov edx, dword [0x83b56c]
sub edx, eax
mov esi, eax
sar edx, 2
cmp edx, 1
jae 0x490b33
mov edx, dword [0x83b564]
test edx, edx
je 0x490a62
mov ecx, eax
sub ecx, edx
sar ecx, 2
cmp ecx, 1
jbe 0x490a62
mov ecx, eax
sub ecx, edx
sar ecx, 2
jmp 0x490a67
mov ecx, 1
test edx, edx
jne 0x490a6f
xor eax, eax
jmp 0x490a74
sub eax, edx
sar eax, 2
add eax, ecx
test eax, eax
mov dword [esp + 0x1c], eax
jge 0x490a80
xor eax, eax
lea edx, [eax*4]
push edx
call fcn.004fbef4
mov edi, dword [0x83b564]
add esp, 4
mov ebp, eax
cmp edi, esi
mov ebx, ebp
je 0x490ab2
push edi
push ebx
call fcn.00491170
add edi, 4
add esp, 8
add ebx, 4
cmp edi, esi
jne 0x490a9e
lea eax, [esp + 0x20]
push eax
push ebx
call fcn.00491170
mov edi, dword [0x83b568]
add esp, 8
add ebx, 4
cmp esi, edi
je 0x490ae1
push esi
push ebx
call fcn.00491170
add esi, 4
add esp, 8
add ebx, 4
cmp esi, edi
jne 0x490acd
mov ecx, dword [0x83b568]
mov edx, dword [0x83b564]
push ecx
push edx
mov ecx, 0x83b560
call fcn.00490ef0
mov eax, dword [0x83b564]
push eax
call fcn.004fbf1d
mov ecx, dword [esp + 0x20]
add esp, 4
lea edx, [ebp + ecx*4]
mov ecx, 0x83b560
mov dword [0x83b56c], edx
call fcn.00490ea0
lea eax, [ebp + eax*4 + 4]
mov dword [0x83b564], ebp
mov dword [0x83b568], eax
jmp 0x490bd0
mov ecx, eax
sub ecx, esi
sar ecx, 2
cmp ecx, 1
jae 0x490b8d
lea edx, [esi + 4]
mov ecx, 0x83b560
push edx
push eax
push esi
call fcn.00491110
lea eax, [esp + 0x20]
mov edx, 1
push eax
mov eax, dword [0x83b568]
mov ecx, eax
sub ecx, esi
sar ecx, 2
sub edx, ecx
mov ecx, 0x83b560
push edx
push eax
call fcn.00491140
mov ecx, dword [0x83b568]
mov eax, esi
cmp esi, ecx
je 0x490bca
mov edx, dword [esp + 0x20]
mov dword [eax], edx
add eax, edi
cmp eax, ecx
jne 0x490b7f
jmp 0x490bca
push eax
push eax
add eax, 0xfffffffc
mov ecx, 0x83b560
push eax
call fcn.00491110
mov eax, dword [0x83b568]
mov ecx, eax
add eax, 0xfffffffc
cmp esi, eax
je 0x490bb7
sub eax, edi
sub ecx, edi
cmp eax, esi
mov edx, dword [eax]
mov dword [ecx], edx
jne 0x490bab
lea eax, [esi + 4]
cmp esi, eax
je 0x490bca
mov ecx, dword [esp + 0x20]
mov dword [esi], ecx
add esi, edi
cmp esi, eax
jne 0x490bbe
add dword [0x83b568], edi
push 0x83b548
call dword [sym.imp.KERNEL32.dll_LeaveCriticalSection]
mov edx, dword [esp + 0x20]
mov eax, dword [edx + 0x20]
push eax
call dword [sym.imp.KERNEL32.dll_ResumeThread]
mov ecx, dword [esp + 0x20]
push 0
push 0x14
mov edx, dword [ecx + 0x28]
push edx
call dword [sym.imp.KERNEL32.dll_ReleaseSemaphore]
pop edi
pop esi
pop ebp
mov eax, 1
pop ebx
add esp, 8
ret