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MP4編解C源代碼
代碼片段和文件信息
/**************************************************************************
?*????????????????????????????????????????????????????????????????????????*
?*?This?code?has?been?developed?by?Andrea?Graziani.?This?software?is?an???*
?*?implementation?of?a?part?of?one?or?more?MPEG-4?Video?tools?as??????????*
?*?specified?in?ISO/IEC?14496-2?standard.??Those?intending?to?use?this????*
?*?software?module?in?hardware?or?software?products?are?advised?that?its??*
?*?use?may?infringe?existing?patents?or?copyrights?and?any?such?use??????*
?*?would?be?at?such?party‘s?own?risk.??The?original?developer?of?this?????*
?*?software?module?and?his/her?company?and?subsequent?editors?and?their??*
?*?companies?(including?Project?Mayo)?will?have?no?liability?for?use?of??*
?*?this?software?or?modifications?or?derivatives?thereof.?????????????????*
?*????????????????????????????????????????????????????????????????????????*
?*?Project?Mayo?gives?users?of?the?Codec?a?license?to?this?software???????*
?*?module?or?modifications?thereof?for?use?in?hardware?or?software????????*
?*?products?claiming?conformance?to?the?MPEG-4?Video?Standard?as??????????*
?*?described?in?the?Open?DivX?license.????????????????????????????????????*
?*????????????????????????????????????????????????????????????????????????*
?*?The?complete?Open?DivX?license?can?be?found?at?????????????????????????*
?*?http://www.projectmayo.com/opendivx/license.php????????????????????????*
?*????????????????????????????????????????????????????????????????????????*
?**************************************************************************/
/**
*??Copyright?(C)?2001?-?Project?Mayo
?*
?*?Andrea?Graziani?(Ag)
?*
?*?DivX?Advanced?Research?Center?
*
**/
#include?“basic_prediction.h“
/*
half_flag[t]
t?=?0 horizontal?component
t?=?1 vertical?component
*/
//?Purpose:?specialized?basic?motion?compensation?routines
void?CopyBlock(unsigned?char?*?Src?unsigned?char?*?Dst?int?Stride)
{
int?dy;
#ifdef?BIG_ENDIAN
char?*lpSrc?=?(char?*)?Src;
char?*lpDst?=?(char?*)?Dst;
int?lpStride?=?Stride;
for?(dy?=?0;?dy?8;?dy++)?{
lpDst[0]?=?lpSrc[0];
lpDst[1]?=?lpSrc[1];
lpDst[2]?=?lpSrc[2];
lpDst[3]?=?lpSrc[3];
lpDst[4]?=?lpSrc[4];
lpDst[5]?=?lpSrc[5];
lpDst[6]?=?lpSrc[6];
lpDst[7]?=?lpSrc[7];
lpSrc?+=?lpStride;
lpDst?+=?lpStride;
}
#else
long?*lpSrc?=?(long?*)?Src;
long?*lpDst?=?(long?*)?Dst;
int?lpStride?=?Stride?>>?2;
for?(dy?=?0;?dy?8;?dy++)?{
lpDst[0]?=?lpSrc[0];
lpDst[1]?=?lpSrc[1];
lpSrc?+=?lpStride;
lpDst?+=?lpStride;
}
#endif
}
/**/
void?CopyBlockHor(unsigned?char?*?Src?unsigned?char?*?Dst?int?Stride)
{
int?dy?dx;
for?(dy?=?0;?dy?8;?dy++)?{
for?(dx?=?0;?dx?8;?dx++)?{
Dst[dx]?=?(Src[dx]?+?Src[dx+1]+1)?>>?1;?//?hor?interpolation?with?rounding
}
Src?+=?Stride;
Dst?+=?Stride;
}
}
/**/
void?CopyBlockVer(unsigned?char?*?Src?unsigned?char?*?Dst?int?
?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????13??2001-04-20?08:18??mpeg4decsrc\DECORE\BUILD\CVS\Entries
?????文件?????????23??2001-04-20?08:18??mpeg4decsrc\DECORE\BUILD\CVS\Repository
?????文件?????????51??2001-04-20?08:18??mpeg4decsrc\DECORE\BUILD\CVS\Root
????..AD...?????????0??2002-07-27?17:09??mpeg4decsrc\DECORE\BUILD\CVS
?????文件???????7251??2002-07-27?17:19??mpeg4decsrc\DECORE\BUILD\WIN32\console.dsp
?????文件???????3055??2004-12-08?00:16??mpeg4decsrc\DECORE\BUILD\WIN32\console.plg
?????文件????????145??2001-04-20?08:18??mpeg4decsrc\DECORE\BUILD\WIN32\CVS\Entries
?????文件?????????29??2001-04-20?08:18??mpeg4decsrc\DECORE\BUILD\WIN32\CVS\Repository
?????文件?????????51??2001-04-20?08:18??mpeg4decsrc\DECORE\BUILD\WIN32\CVS\Root
????..AD...?????????0??2002-07-27?17:09??mpeg4decsrc\DECORE\BUILD\WIN32\CVS
?????目錄??????????0??2004-12-08?00:15??mpeg4decsrc\DECORE\BUILD\WIN32\Debug
?????文件??????18514??2001-04-20?08:53??mpeg4decsrc\DECORE\BUILD\WIN32\DECORE.DSP
?????文件????????724??2002-07-27?17:11??mpeg4decsrc\DECORE\BUILD\WIN32\DECORE.DSW
?????文件?????132096??2004-12-08?00:20??mpeg4decsrc\DECORE\BUILD\WIN32\DECORE.ncb
?????文件??????58880??2004-12-08?00:19??mpeg4decsrc\DECORE\BUILD\WIN32\DECORE.OPT
?????文件????????127??2001-04-20?08:18??mpeg4decsrc\DECORE\BUILD\WIN32\TEST\CVS\Entries
?????文件?????????34??2001-04-20?08:18??mpeg4decsrc\DECORE\BUILD\WIN32\TEST\CVS\Repository
?????文件?????????51??2001-04-20?08:18??mpeg4decsrc\DECORE\BUILD\WIN32\TEST\CVS\Root
????..AD...?????????0??2002-07-27?17:09??mpeg4decsrc\DECORE\BUILD\WIN32\TEST\CVS
?????文件???????4128??2001-03-21?19:07??mpeg4decsrc\DECORE\BUILD\WIN32\TEST\test_basic_prediction.dsp
?????文件????????566??2001-03-21?19:07??mpeg4decsrc\DECORE\BUILD\WIN32\TEST\test_basic_prediction.dsw
????..AD...?????????0??2002-07-27?17:09??mpeg4decsrc\DECORE\BUILD\WIN32\TEST
????..AD...?????????0??2002-07-27?17:09??mpeg4decsrc\DECORE\BUILD\WIN32
????..AD...?????????0??2002-07-27?17:09??mpeg4decsrc\DECORE\BUILD
?????文件?????????36??2001-04-20?08:18??mpeg4decsrc\DECORE\CVS\Entries
?????文件?????????17??2001-04-20?08:18??mpeg4decsrc\DECORE\CVS\Repository
?????文件?????????51??2001-04-20?08:18??mpeg4decsrc\DECORE\CVS\Root
????..AD...?????????0??2002-07-27?17:09??mpeg4decsrc\DECORE\CVS
?????文件??????15798??2001-04-19?11:12??mpeg4decsrc\DECORE\SRC\ATT_MMX\basic_prediction_mmx.c
?????文件?????????59??2001-04-20?08:18??mpeg4decsrc\DECORE\SRC\ATT_MMX\CVS\Entries
............此處省略98個文件信息
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