/*
?*?Author:?Adrian?Keet
?*?Last?modified:?December?30?2007
?*
?*?This?code?is?in?the?public?domain.?Go?ahead?and?use?it?for?whatever?you
?*?want.?I?don‘t?care.?:）
?*/

#include?
#include?
#include?
#include?
#include?
#include?

int?usage（）
{
????fprintf（stderr?“Usage:?oggextract?“）;
????return?255;
}

int?findpattern（unsigned?char?*data?int?datalen?int?start）
{
????int?i;

????for?（i?=?start;?i?????????if?（*（int?*）（data?+?i）?==?0x5367674f）?/*?“OggS“?*/
????????????return?i;
????return?-1;
}

int?ogg_ispage（unsigned?char?*data）
{
????/*?capture?pattern?*/
????if?（*（int?*）data?!=?0x5367674f）?/*?“OggS“?*/
????????return?0;

????/*?stream?structure?version?*/
????if?（data[4]?!=?0x00）
????????return?0;

????/*?header?type?flag?*/
????if?（（data[5]?&?~7）?!=?0x00）
????????return?0;

????/*?I?think?we?can?reasonably?assume?it?is?a?real?page?now?*/
?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????3318??2007-12-30?19:57??oggextract.c
?????文件???????12851??2007-12-30?19:57??oggextract.exe
?????文件?????1873811??2007-01-31?03:33??cygwin1.dll