// File: /workspace/github_cpp_makefile_star2_O1/alan0201tw[P]RayTracer/include/stb_image_write.h
// Function: stbi_write_png_to_mem
STBIWDEF unsigned char *stbi_write_png_to_mem(const unsigned char *pixels, int stride_bytes, int x, int y, int n, int *out_len)
{
   int force_filter = stbi_write_force_png_filter;
   int ctype[5] = { -1, 0, 4, 2, 6 };
   unsigned char sig[8] = { 137,80,78,71,13,10,26,10 };
   unsigned char *out,*o, *filt, *zlib;
   signed char *line_buffer;
   int j,zlen;

   if (stride_bytes == 0)
      stride_bytes = x * n;

   if (force_filter >= 5) {
      force_filter = -1;
   }

   filt = (unsigned char *) STBIW_MALLOC((x*n+1) * y); if (!filt) return 0;
   line_buffer = (signed char *) STBIW_MALLOC(x * n); if (!line_buffer) { STBIW_FREE(filt); return 0; }
   for (j=0; j < y; ++j) {
      int filter_type;
      if (force_filter > -1) {
         filter_type = force_filter;
         stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, force_filter, line_buffer);
      } else { // Estimate the best filter by running through all of them:
         int best_filter = 0, best_filter_val = 0x7fffffff, est, i;
         for (filter_type = 0; filter_type < 5; filter_type++) {
            stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, filter_type, line_buffer);

            // Estimate the entropy of the line using this filter; the less, the better.
            est = 0;
            for (i = 0; i < x*n; ++i) {
               est += abs((signed char) line_buffer[i]);
            }
            if (est < best_filter_val) {
               best_filter_val = est;
               best_filter = filter_type;
            }
         }
         if (filter_type != best_filter) {  // If the last iteration already got us the best filter, don't redo it
            stbiw__encode_png_line((unsigned char*)(pixels), stride_bytes, x, y, j, n, best_filter, line_buffer);
            filter_type = best_filter;
         }
      }
      // when we get here, filter_type contains the filter type, and line_buffer contains the data
      filt[j*(x*n+1)] = (unsigned char) filter_type;
      STBIW_MEMMOVE(filt+j*(x*n+1)+1, line_buffer, x*n);
   }
   STBIW_FREE(line_buffer);
   zlib = stbi_zlib_compress(filt, y*( x*n+1), &zlen, stbi_write_png_compression_level);
   STBIW_FREE(filt);
   if (!zlib) return 0;

   // each tag requires 12 bytes of overhead
   out = (unsigned char *) STBIW_MALLOC(8 + 12+13 + 12+zlen + 12);
   if (!out) return 0;
   *out_len = 8 + 12+13 + 12+zlen + 12;

   o=out;
   STBIW_MEMMOVE(o,sig,8); o+= 8;
   stbiw__wp32(o, 13); // header length
   stbiw__wptag(o, "IHDR");
   stbiw__wp32(o, x);
   stbiw__wp32(o, y);
   *o++ = 8;
   *o++ = STBIW_UCHAR(ctype[n]);
   *o++ = 0;
   *o++ = 0;
   *o++ = 0;
   stbiw__wpcrc(&o,13);

   stbiw__wp32(o, zlen);
   stbiw__wptag(o, "IDAT");
   STBIW_MEMMOVE(o, zlib, zlen);
   o += zlen;
   STBIW_FREE(zlib);
   stbiw__wpcrc(&o, zlen);

   stbiw__wp32(o,0);
   stbiw__wptag(o, "IEND");
   stbiw__wpcrc(&o,0);

   STBIW_ASSERT(o == out + *out_len);

   return out;
}

// Assembly:
pushq %rbp
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
subq $0x68, %rsp
movq %r9, %r15
movq %rdi, 0x30(%rsp)
movl 0x27906(%rip), %eax     # 0x4f408
movl %r8d, 0x14(%rsp)
movl %r8d, %r13d
movl %edx, 0x10(%rsp)
imull %edx, %r13d
testl %esi, %esi
cmovel %r13d, %esi
movl %esi, 0x1c(%rsp)
cmpl $0x5, %eax
movl $0xffffffff, %edx       # imm = 0xFFFFFFFF
cmovll %eax, %edx
movl %edx, 0x18(%rsp)
leal 0x1(%r13), %ebx
movl %ebx, %ebp
movl %ecx, 0xc(%rsp)
imull %ecx, %ebp
movslq %ebp, %rdi
callq 0x64c0
testq %rax, %rax
je 0x27e47
movq %rax, %r12
movslq %r13d, %rdi
movq %rdi, 0x58(%rsp)
callq 0x64c0
testq %rax, %rax
je 0x27e3f
movq %rax, %r14
movl %ebp, 0x20(%rsp)
movq %r13, 0x28(%rsp)
movq %r15, 0x38(%rsp)
cmpl $0x0, 0xc(%rsp)
movl 0x18(%rsp), %r15d
jle 0x27c85
movslq %ebx, %rax
movq %rax, 0x50(%rsp)
movl 0xc(%rsp), %eax
movq %rax, 0x48(%rsp)
movl 0x28(%rsp), %ebx
xorl %r13d, %r13d
movq %r12, 0x40(%rsp)
movl %r15d, %ebp
testl %r15d, %r15d
jns 0x27c2f
xorl %ebp, %ebp
movl $0x7fffffff, %r12d      # imm = 0x7FFFFFFF
xorl %r15d, %r15d
movq 0x30(%rsp), %rdi
movl 0x1c(%rsp), %esi
movl 0x10(%rsp), %edx
movl 0xc(%rsp), %ecx
movl %r13d, %r8d
movl 0x14(%rsp), %r9d
pushq %r14
pushq %r15
callq 0x27e5b
addq $0x10, %rsp
movl $0x0, %eax
cmpl $0x0, 0x28(%rsp)
jle 0x27c0a
xorl %ecx, %ecx
xorl %eax, %eax
movb (%r14,%rcx), %dl
movl %edx, %esi
sarb $0x7, %sil
xorb %sil, %dl
subb %sil, %dl
movzbl %dl, %edx
addl %edx, %eax
incq %rcx
cmpq %rcx, %rbx
jne 0x27bed
cmpl %r12d, %eax
cmovll %r15d, %ebp
cmovll %eax, %r12d
incl %r15d
cmpl $0x5, %r15d
jne 0x27bb7
movb $0x5, %al
cmpl $0x5, %ebp
movq 0x40(%rsp), %r12
movl 0x18(%rsp), %r15d
je 0x27c56
movq 0x30(%rsp), %rdi
movl 0x1c(%rsp), %esi
movl 0x10(%rsp), %edx
movl 0xc(%rsp), %ecx
movl %r13d, %r8d
movl 0x14(%rsp), %r9d
pushq %r14
pushq %rbp
callq 0x27e5b
addq $0x10, %rsp
movl %ebp, %eax
movq %r13, %rcx
imulq 0x50(%rsp), %rcx
movb %al, (%r12,%rcx)
leaq (%r12,%rcx), %rdi
incq %rdi
movq %r14, %rsi
movq 0x58(%rsp), %rdx
callq 0x6330
incq %r13
cmpq 0x48(%rsp), %r13
jne 0x27ba0
movq %r14, %rdi
callq 0x6490
movl 0x2776d(%rip), %ecx     # 0x4f400
leaq 0x24(%rsp), %rdx
movq %r12, %rdi
movl 0x20(%rsp), %esi
callq 0x27177
movq %rax, %r15
movq %r12, %rdi
callq 0x6490
testq %r15, %r15
je 0x27e47
movslq 0x24(%rsp), %r12
leaq 0x39(%r12), %r14
movq %r14, %rdi
callq 0x64c0
testq %rax, %rax
je 0x27e47
movq %rax, %rbp
movq 0x38(%rsp), %r13
movl %r14d, (%r13)
leaq 0x60(%rsp), %r14
movq %rax, (%r14)
movabsq $0xa1a0a0d474e5089, %rax # imm = 0xA1A0A0D474E5089
movq %rax, (%rbp)
leaq 0x8(%rbp), %rax
movq %rax, (%r14)
movl $0xd000000, 0x8(%rbp)   # imm = 0xD000000
leaq 0xc(%rbp), %rax
movq %rax, (%r14)
movl $0x52444849, 0xc(%rbp)  # imm = 0x52444849
leaq 0x10(%rbp), %rax
movq %rax, (%r14)
movl 0x10(%rsp), %ecx
movl %ecx, %eax
shrl $0x18, %eax
movb %al, 0x10(%rbp)
movl %ecx, %eax
shrl $0x10, %eax
movb %al, 0x11(%rbp)
movb %ch, 0x12(%rbp)
movb %cl, 0x13(%rbp)
leaq 0x14(%rbp), %rax
movq %rax, (%r14)
movl 0xc(%rsp), %ecx
movl %ecx, %eax
shrl $0x18, %eax
movb %al, 0x14(%rbp)
movl %ecx, %eax
shrl $0x10, %eax
movb %al, 0x15(%rbp)
movb %ch, 0x16(%rbp)
movb %cl, 0x17(%rbp)
leaq 0x19(%rbp), %rax
movq %rax, (%r14)
movb $0x8, 0x18(%rbp)
movslq 0x14(%rsp), %rax
leaq 0x158d6(%rip), %rcx     # 0x3d640
movb (%rcx,%rax,4), %al
leaq 0x1a(%rbp), %rcx
movq %rcx, (%r14)
movb %al, 0x19(%rbp)
leaq 0x1b(%rbp), %rax
movq %rax, (%r14)
xorl %eax, %eax
movb %al, 0x1a(%rbp)
leaq 0x1c(%rbp), %rcx
movq %rcx, (%r14)
movb %al, 0x1b(%rbp)
leaq 0x1d(%rbp), %rcx
movq %rcx, (%r14)
movb %al, 0x1c(%rbp)
movq %r14, %rdi
movl $0xd, %esi
callq 0x280fe
movq (%r14), %rbx
movl %r12d, %eax
bswapl %eax
movl %eax, (%rbx)
leaq 0x4(%rbx), %rax
movq %rax, (%r14)
movl $0x54414449, 0x4(%rbx)  # imm = 0x54414449
leaq 0x8(%rbx), %rdi
movq %rdi, (%r14)
movq %r15, %rsi
movq %r12, %rdx
callq 0x6640
leaq (%rbx,%r12), %rax
addq $0x8, %rax
movq %rax, (%r14)
movq %r15, %rdi
callq 0x6490
movq %r14, %rdi
movl %r12d, %esi
callq 0x280fe
movq (%r14), %rax
leaq 0x4(%rax), %rcx
movl $0x0, (%rax)
movq %rcx, (%r14)
movl $0x444e4549, 0x4(%rax)  # imm = 0x444E4549
addq $0x8, %rax
movq %rax, (%r14)
movq %r14, %rdi
xorl %esi, %esi
callq 0x280fe
movslq (%r13), %rax
addq %rbp, %rax
cmpq %rax, (%r14)
je 0x27e49
leaq 0x176d8(%rip), %rdi     # 0x3f4ff
leaq 0x17673(%rip), %rsi     # 0x3f4a1
leaq 0x176de(%rip), %rcx     # 0x3f513
movl $0x483, %edx            # imm = 0x483
callq 0x6250
movq %r12, %rdi
callq 0x6490
xorl %ebp, %ebp
movq %rbp, %rax
addq $0x68, %rsp
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
retq