// File: /workspace/github_c_makefile_star2_O3/jsummers[P]deark/modules/ogg.c
// Function: do_vorbis_page
static void do_vorbis_page(deark *c, lctx *d, struct page_info *pgi, struct stream_info *si)
{
	u8 firstbyte;

	if(pgi->is_first_page) {
		// The first Ogg page of a bitstream usually contains enough data to be
		// useful. So, we'll try to process it directly, without reconstructing
		// the codec bitstream.
		do_vorbis_id_header(c, d, pgi, si);
	}

	// We want to save a copy of the Comment and Setup header data,
	// but not the Identification header which is handled elsewhere.

	if(si->stream_state!=0) {
		// We've already handled the Comment & Setup headers.
		goto done;
	}

	if(pgi->dlen<1) goto done;

	firstbyte = de_getbyte(pgi->dpos);

	if(si->page_count==0 || pgi->page_seq_num==0 || (pgi->hdr_type&0x02)) {
		// This appears to be the Identification header page. Skip it.
		goto done;
	}

	if(pgi->page_seq_num>=1 && (firstbyte&0x01)) {
		// This appears to be one of the pages we care about.
		// Save its data for later.
		if(!si->header_stream) {
			si->header_stream = dbuf_create_membuf(c, 1048576, 1);
		}
		dbuf_copy(c->infile, pgi->dpos, pgi->dlen, si->header_stream);
	}
	else if((firstbyte&0x01)==0) {
		// Reached the end of headers (by encountering a non-header page).
		// (There is required to be an Ogg page break immediately after the
		// Vorbis headers, so the start of the first data *page* must correspond
		// to the start of the first data *packet*. A Vorbis data packet always
		// begins with a byte whose low bit is 0.)
		do_theora_vorbis_after_headers(c, d, si);
	}

done:
	;
}

// Assembly:
pushq %r15
pushq %r14
pushq %r12
pushq %rbx
pushq %rax
movq %rcx, %r14
movq %rdx, %r15
movq %rdi, %rbx
cmpl $0x0, 0x4(%rdx)
je 0x88d4b
movq 0x20(%r15), %rax
addq $0x7, %rax
movq %rsp, %r12
movq %rax, (%r12)
movq 0x18(%rbx), %rdi
movq %r12, %rsi
callq 0xeed83
leaq 0xae0f3(%rip), %rsi     # 0x136d84
movq %rbx, %rdi
movl %eax, %edx
xorl %eax, %eax
callq 0xe8617
movq 0x18(%rbx), %rdi
movq %r12, %rsi
callq 0xeeb4b
movzbl %al, %edx
leaq 0xa4085(%rip), %rsi     # 0x12cd38
movq %rbx, %rdi
xorl %eax, %eax
callq 0xe8617
movq 0x18(%rbx), %rdi
movq %r12, %rsi
callq 0xeed83
leaq 0xa4075(%rip), %rsi     # 0x12cd45
movq %rbx, %rdi
movl %eax, %edx
xorl %eax, %eax
callq 0xe8617
movq 0x18(%rbx), %rdi
movq (%r12), %rsi
callq 0xeedfa
addq $0x4, (%r12)
leaq 0xa4060(%rip), %rsi     # 0x12cd55
movq %rbx, %rdi
movl %eax, %edx
xorl %eax, %eax
callq 0xe8617
movq 0x18(%rbx), %rdi
movq (%r12), %rsi
callq 0xeedfa
addq $0x4, (%r12)
leaq 0xa404b(%rip), %rsi     # 0x12cd65
movq %rbx, %rdi
movl %eax, %edx
xorl %eax, %eax
callq 0xe8617
movq 0x18(%rbx), %rdi
movq (%r12), %rsi
callq 0xeedfa
addq $0x4, (%r12)
leaq 0xa403a(%rip), %rsi     # 0x12cd79
movq %rbx, %rdi
movl %eax, %edx
xorl %eax, %eax
callq 0xe8617
cmpl $0x0, 0x20(%r14)
je 0x88d5e
addq $0x8, %rsp
popq %rbx
popq %r12
popq %r14
popq %r15
retq
cmpq $0x0, 0x28(%r15)
jle 0x88d52
movq 0x18(%rbx), %rdi
movq 0x20(%r15), %rsi
callq 0xeead3
cmpq $0x0, 0x18(%r14)
je 0x88d52
movq 0x18(%r15), %rcx
testq %rcx, %rcx
je 0x88d52
testb $0x2, 0x1(%r15)
jne 0x88d52
testq %rcx, %rcx
setle %cl
testb $0x1, %al
sete %dl
orb %cl, %dl
je 0x88da9
testb $0x1, %al
jne 0x88d52
movq %rbx, %rdi
movq %r14, %rsi
callq 0x897c7
jmp 0x88d52
movq 0x28(%r14), %rcx
testq %rcx, %rcx
jne 0x88dcb
movl $0x100000, %esi         # imm = 0x100000
movq %rbx, %rdi
movl $0x1, %edx
callq 0xf09c5
movq %rax, %rcx
movq %rax, 0x28(%r14)
movq 0x18(%rbx), %rdi
movq 0x20(%r15), %rsi
movq 0x28(%r15), %rdx
callq 0xef481
jmp 0x88d52