user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<si_camera_demux_gen>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %edx,-0x34(%rbp)
  mov    %ecx,-0x38(%rbp)
  mov    %r8d,-0x3c(%rbp)
  mov    -0x34(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,-0xc(%rbp)
  mov    -0x34(%rbp),%eax
  imul   %eax,%eax
  mov    %eax,-0x18(%rbp)
  movl   $0x0,-0x14(%rbp)
  movl   $0x0,-0x10(%rbp)
  movl   $0x0,-0x18(%rbp)
  movl   $0x0,-0x14(%rbp)
  jmp    L24
L1:
  movl   $0x0,-0x10(%rbp)
  jmp    L11
L27:
  mov    -0x18(%rbp),%eax
  cltq
  lea    (%rax,%rax,1),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x14(%rbp),%edx
  add    $0x2,%edx
  mov    %edx,%ecx
  imul   -0x34(%rbp),%ecx
  mov    -0x10(%rbp),%edx
  add    $0x1,%edx
  add    %ecx,%edx
  movslq %edx,%rdx
  lea    (%rdx,%rdx,1),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  movzwl (%rax),%eax
  mov    %ax,(%rdx)
  mov    -0x10(%rbp),%eax
  lea    0x1(%rax),%ecx
  mov    -0x38(%rbp),%eax
  sub    %ecx,%eax
  mov    %eax,%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x8(%rbp)
  mov    -0x14(%rbp),%eax
  lea    0x1(%rax),%ecx
  mov    -0x3c(%rbp),%eax
  sub    %ecx,%eax
  mov    %eax,%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x4(%rbp)
  mov    -0x18(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    -0x14(%rbp),%edx
  add    $0x2,%edx
  mov    %edx,%ecx
  imul   -0x34(%rbp),%ecx
  mov    -0x8(%rbp),%edx
  add    %ecx,%edx
  movslq %edx,%rdx
  lea    (%rdx,%rdx,1),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  movzwl (%rax),%eax
  mov    %ax,(%rdx)
  mov    -0x18(%rbp),%eax
  cltq
  add    $0x2,%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x30(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x4(%rbp),%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x10(%rbp),%eax
  add    %edx,%eax
  cltq
  add    $0x1,%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  movzwl (%rcx),%eax
  mov    %ax,(%rdx)
  mov    -0x18(%rbp),%eax
  cltq
  add    $0x3,%rax
  lea    (%rax,%rax,1),%rdx
  mov    -0x30(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x4(%rbp),%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    (%rax,%rax,1),%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  movzwl (%rcx),%eax
  mov    %ax,(%rdx)
  addl   $0x4,-0x18(%rbp)
  addl   $0x1,-0x10(%rbp)
L11:
  mov    -0x10(%rbp),%eax
  cmp    -0x38(%rbp),%eax
  jl     L27
  addl   $0x1,-0x14(%rbp)
L24:
  mov    -0x14(%rbp),%eax
  cmp    -0x3c(%rbp),%eax
  jl     L1
  nop
  nop
  pop    %rbp
  ret
```

assistant: ```c
void si_camera_demux_gen(unsigned short *out, unsigned short *in, int size, int serlen, int parlen) {
  int so2, tot, row, col, irow, icol;
  so2 = size / 2;
  tot = size * size;
  row = 0;
  col = 0;
  tot = 0;
  for (row = 0; row < parlen; row++) {
    for (col = 0; col < serlen; col++) {
      out[(row + 2) * size + (col + 1)] = in[tot];
      icol = (serlen - (col + 1)) + so2;
      irow = (parlen - (row + 1)) + so2;
      out[(row + 2) * size + icol] = in[tot + 1];
      out[irow * size + col + 1] = in[tot + 2];
      out[irow * size + icol] = in[tot + 3];
      tot += 4;
    }
  }
}
```