Function at 0x454a20
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 0x454b3d
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.0048cb80
add esp, 0xc
test eax, eax
jne 0x454b3d
mov eax, dword [esi + 4]
mov edi, 0x516db0
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 0x516db0
push esi
call fcn.0048cb80
add esp, 0xc
test eax, eax
jne 0x454b3d
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.0048cb80
add esp, 0xc
test eax, eax
jne 0x454ac3
test esi, esi
lea ebx, [edi + 8]
jne 0x454afa
jmp 0x454ae2
push 4
push 0x516da0
push edi
call fcn.0048cb80
add esp, 0xc
test eax, eax
jne 0x454ae2
mov ebp, dword [esp + 0x1c]
lea esi, [edi + 8]
test ebx, ebx
jne 0x454afe
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 0x454a9f
test ebx, ebx
je 0x454b3d
test esi, esi
je 0x454b3d
test ebp, ebp
jbe 0x454b3d
push 0x4c
call fcn.0049d99f
mov dword [esp + 0x24], eax
mov dword [eax + 8], ebp
mov edx, dword [esp + 0x24]
mov eax, dword [edx + 8]
push eax
call fcn.0048df47
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 0x454b47
push eax
call fcn.0049d9c8
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.00454810
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 0x455050
push eax
add eax, 4
push ebx
push eax
call fcn.00454880
mov eax, dword [esp + 0x30]
add esp, 0x10
mov edi, 4
lea edx, [eax + 0x24]
push edx
push edi
push eax
push 0x454e00
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateThread]
mov ecx, dword [esp + 0x20]
push 0x531aa0
mov dword [ecx + 0x20], eax
call dword [sym.imp.KERNEL32.dll_EnterCriticalSection]
mov eax, dword [0x531ac0]
mov edx, dword [0x531ac4]
sub edx, eax
mov esi, eax
sar edx, 2
cmp edx, 1
jae 0x454d23
mov edx, dword [0x531abc]
test edx, edx
je 0x454c52
mov ecx, eax
sub ecx, edx
sar ecx, 2
cmp ecx, 1
jbe 0x454c52
mov ecx, eax
sub ecx, edx
sar ecx, 2
jmp 0x454c57
mov ecx, 1
test edx, edx
jne 0x454c5f
xor eax, eax
jmp 0x454c64
sub eax, edx
sar eax, 2
add eax, ecx
test eax, eax
mov dword [esp + 0x1c], eax
jge 0x454c70
xor eax, eax
lea edx, [eax*4]
push edx
call fcn.0049d99f
mov edi, dword [0x531abc]
add esp, 4
mov ebp, eax
cmp edi, esi
mov ebx, ebp
je 0x454ca2
push edi
push ebx
call fcn.00455110
add edi, 4
add esp, 8
add ebx, 4
cmp edi, esi
jne 0x454c8e
lea eax, [esp + 0x20]
push eax
push ebx
call fcn.00455110
mov edi, dword [0x531ac0]
add esp, 8
add ebx, 4
cmp esi, edi
je 0x454cd1
push esi
push ebx
call fcn.00455110
add esi, 4
add esp, 8
add ebx, 4
cmp esi, edi
jne 0x454cbd
mov ecx, dword [0x531ac0]
mov edx, dword [0x531abc]
push ecx
push edx
mov ecx, 0x531ab8
call fcn.00444620
mov eax, dword [0x531abc]
push eax
call fcn.0049d9c8
mov ecx, dword [esp + 0x20]
add esp, 4
lea edx, [ebp + ecx*4]
mov ecx, 0x531ab8
mov dword [0x531ac4], edx
call fcn.00455090
lea eax, [ebp + eax*4 + 4]
mov dword [0x531abc], ebp
mov dword [0x531ac0], eax
jmp 0x454dc0
mov ecx, eax
sub ecx, esi
sar ecx, 2
cmp ecx, 1
jae 0x454d7d
lea edx, [esi + 4]
mov ecx, 0x531ab8
push edx
push eax
push esi
call fcn.004550b0
lea eax, [esp + 0x20]
mov edx, 1
push eax
mov eax, dword [0x531ac0]
mov ecx, eax
sub ecx, esi
sar ecx, 2
sub edx, ecx
mov ecx, 0x531ab8
push edx
push eax
call fcn.004550e0
mov ecx, dword [0x531ac0]
mov eax, esi
cmp esi, ecx
je 0x454dba
mov edx, dword [esp + 0x20]
mov dword [eax], edx
add eax, edi
cmp eax, ecx
jne 0x454d6f
jmp 0x454dba
push eax
push eax
add eax, 0xfffffffc
mov ecx, 0x531ab8
push eax
call fcn.004550b0
mov eax, dword [0x531ac0]
mov ecx, eax
add eax, 0xfffffffc
cmp esi, eax
je 0x454da7
sub eax, edi
sub ecx, edi
cmp eax, esi
mov edx, dword [eax]
mov dword [ecx], edx
jne 0x454d9b
lea eax, [esi + 4]
cmp esi, eax
je 0x454dba
mov ecx, dword [esp + 0x20]
mov dword [esi], ecx
add esi, edi
cmp esi, eax
jne 0x454dae
add dword [0x531ac0], edi
push 0x531aa0
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