user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<NV12TileToNV12>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x58,%rsp
  mov    %rdi,0x30(%rsp)
  mov    %rsi,0x38(%rsp)
  mov    %edx,%ebp
  mov    %fs:0x28,%rax
  mov    %rax,0x48(%rsp)
  xor    %eax,%eax
  lea    -0x1(%rcx),%eax
  mov    %ecx,%edx
  and    $0x1,%edx
  mov    %edx,0x2c(%rsp)
  cmove  %ecx,%eax
  mov    %eax,0x28(%rsp)
  mov    %ebp,%eax
  shr    $0x1f,%eax
  add    %ebp,%eax
  sar    %eax
  mov    %eax,0x10(%rsp)
  mov    %ebp,%eax
  shl    $0xb,%eax
  cltq
  mov    %rax,0x8(%rsp)
  mov    %ebp,%eax
  shl    $0xc,%eax
  cltq
  shl    $0x2,%rax
  mov    %rax,0x20(%rsp)
  mov    %rsi,0x18(%rsp)
  mov    %rdi,%r14
  movl   $0x0,0x14(%rsp)
  lea    0x40(%rsp),%r12
  jmp    L74
L91:
  mov    %ebx,%r13d
  shl    $0x7,%r13d
  movslq %r13d,%r13
  mov    0x8(%rsp),%rax
  add    %r13,%rax
  lea    (%r14,%rax,4),%r15
  mov    %ebp,%edx
  mov    %r12,%rsi
  mov    %r15,%rdi
  call   <copyTile@plt>
  lea    0x100(%r15),%rdi
  mov    %ebp,%edx
  mov    %r12,%rsi
  call   <copyTile@plt>
  lea    (%r14,%r13,4),%r13
  mov    %ebp,%edx
  mov    %r12,%rsi
  mov    %r13,%rdi
  call   <copyTile@plt>
  lea    0x100(%r13),%rdi
  mov    %ebp,%edx
  mov    %r12,%rsi
  call   <copyTile@plt>
L12:
  add    $0x1,%ebx
  cmp    0x10(%rsp),%ebx
  jge    L90
L61:
  test   $0x1,%bl
  jne    L91
  mov    %ebx,%r13d
  shl    $0x7,%r13d
  movslq %r13d,%r13
  lea    (%r14,%r13,4),%r15
  mov    %ebp,%edx
  mov    %r12,%rsi
  mov    %r15,%rdi
  call   <copyTile@plt>
  lea    0x100(%r15),%rdi
  mov    %ebp,%edx
  mov    %r12,%rsi
  call   <copyTile@plt>
  add    0x8(%rsp),%r13
  lea    (%r14,%r13,4),%r13
  mov    %ebp,%edx
  mov    %r12,%rsi
  mov    %r13,%rdi
  call   <copyTile@plt>
  lea    0x100(%r13),%rdi
  mov    %ebp,%edx
  mov    %r12,%rsi
  call   <copyTile@plt>
  jmp    L12
L90:
  mov    0x20(%rsp),%rcx
  add    %rcx,0x18(%rsp)
  add    %rcx,%r14
  addl   $0x2,0x14(%rsp)
L74:
  mov    0x28(%rsp),%ecx
  cmp    %ecx,0x14(%rsp)
  jge    L51
  mov    0x18(%rsp),%rax
  mov    %rax,0x40(%rsp)
  cmp    $0x1,%ebp
  jle    L90
  mov    $0x0,%ebx
  jmp    L61
L51:
  lea    0x1(%rcx),%eax
  shr    %eax
  mov    %eax,%eax
  cmp    $0xffffffff,%ecx
  mov    $0x0,%edx
  cmovl  %rdx,%rax
  imul   0x20(%rsp),%rax
  mov    0x30(%rsp),%r12
  add    %rax,%r12
  add    0x38(%rsp),%rax
  cmpl   $0x0,0x2c(%rsp)
  je     L75
  mov    %rax,0x40(%rsp)
  test   %ebp,%ebp
  jle    L75
  mov    %r12,%rbx
  mov    %ebp,%eax
  shl    $0x8,%rax
  add    %rax,%r12
  lea    0x40(%rsp),%r13
L53:
  mov    %ebp,%edx
  mov    %r13,%rsi
  mov    %rbx,%rdi
  call   <copyTile@plt>
  add    $0x100,%rbx
  cmp    %r12,%rbx
  jne    L53
L75:
  mov    0x48(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L30
  add    $0x58,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L30:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void NV12TileToNV12(uint8_t *dst_head, uint8_t *src_head, int wTiles, int hTiles) {
  int loop = 0;
  int Z = 0;
  uint8_t *src = src_head;
  uint8_t *dst = dst_head;
  for (loop = 0; loop < (hTiles % 2 == 0 ? hTiles : hTiles - 1); loop = loop + 2) {
    src = src_head;
    for (Z = 0; Z < (wTiles / 2); Z++) {
      dst = dst_head;
      if (Z % 2 == 0) {
        dst = dst + (Z * 2 * 64);
        copyTile(dst, &src, wTiles);
        dst = dst + 64;
        copyTile(dst, &src, wTiles);
        dst = dst_head + (wTiles * (64 * 32));
        dst = dst + (Z * 2 * 64);
        copyTile(dst, &src, wTiles);
        dst = dst + 64;
        copyTile(dst, &src, wTiles);
      } else {
        dst = dst_head + (wTiles * (64 * 32));
        dst = dst + (Z * 2 * 64);
        copyTile(dst, &src, wTiles);
        dst = dst + 64;
        copyTile(dst, &src, wTiles);
        dst = dst_head + (Z * 2 * 64);
        copyTile(dst, &src, wTiles);
        dst = dst + 64;
        copyTile(dst, &src, wTiles);
      }
    }
    src_head = src_head + (2 * (64 * 32) * wTiles);
    dst_head = dst_head + (2 * wTiles * (64 * 32));
  }
  if (hTiles % 2) {
    src = src_head;
    for (loop = 0; loop < wTiles; loop++) {
      dst = dst_head + (loop * 64);
      copyTile(dst, &src, wTiles);
    }
  }
}
```