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/********************************************************************
* *
* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
* *
********************************************************************
function:
last mod: $Id: fragment.c 17410 2010-09-21 21:53:48Z tterribe $
********************************************************************/
#include <string.h>
#include "internal.h"
void oc_frag_copy_c(unsigned char *_dst,const unsigned char *_src,int _ystride){
int i;
for(i=8;i-->0;){
memcpy(_dst,_src,8*sizeof(*_dst));
_dst+=_ystride;
_src+=_ystride;
}
}
/*Copies the fragments specified by the lists of fragment indices from one
frame to another.
_dst_frame: The reference frame to copy to.
_src_frame: The reference frame to copy from.
_ystride: The row stride of the reference frames.
_fragis: A pointer to a list of fragment indices.
_nfragis: The number of fragment indices to copy.
_frag_buf_offs: The offsets of fragments in the reference frames.*/
void oc_frag_copy_list_c(unsigned char *_dst_frame,
const unsigned char *_src_frame,int _ystride,
const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs){
ptrdiff_t fragii;
for(fragii=0;fragii<_nfragis;fragii++){
ptrdiff_t frag_buf_off;
frag_buf_off=_frag_buf_offs[_fragis[fragii]];
oc_frag_copy_c(_dst_frame+frag_buf_off,
_src_frame+frag_buf_off,_ystride);
}
}
void oc_frag_recon_intra_c(unsigned char *_dst,int _ystride,
const ogg_int16_t _residue[64]){
int i;
for(i=0;i<8;i++){
int j;
for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+128);
_dst+=_ystride;
}
}
void oc_frag_recon_inter_c(unsigned char *_dst,
const unsigned char *_src,int _ystride,const ogg_int16_t _residue[64]){
int i;
for(i=0;i<8;i++){
int j;
for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+_src[j]);
_dst+=_ystride;
_src+=_ystride;
}
}
void oc_frag_recon_inter2_c(unsigned char *_dst,const unsigned char *_src1,
const unsigned char *_src2,int _ystride,const ogg_int16_t _residue[64]){
int i;
for(i=0;i<8;i++){
int j;
for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+(_src1[j]+_src2[j]>>1));
_dst+=_ystride;
_src1+=_ystride;
_src2+=_ystride;
}
}
void oc_restore_fpu_c(void){}
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