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