1 /********************************************************************
2 * *
3 * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
5 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
6 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
7 * *
8 * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
9 * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
10 * *
11 ********************************************************************
12
13 function:
14 last mod: $Id$
15
16 ********************************************************************/
17 #include <string.h>
18 #include "internal.h"
19
oc_frag_copy_c(unsigned char * _dst,const unsigned char * _src,int _ystride)20 void oc_frag_copy_c(unsigned char *_dst,const unsigned char *_src,int _ystride){
21 int i;
22 for(i=8;i-->0;){
23 memcpy(_dst,_src,8*sizeof(*_dst));
24 _dst+=_ystride;
25 _src+=_ystride;
26 }
27 }
28
29 /*Copies the fragments specified by the lists of fragment indices from one
30 frame to another.
31 _dst_frame: The reference frame to copy to.
32 _src_frame: The reference frame to copy from.
33 _ystride: The row stride of the reference frames.
34 _fragis: A pointer to a list of fragment indices.
35 _nfragis: The number of fragment indices to copy.
36 _frag_buf_offs: The offsets of fragments in the reference frames.*/
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)37 void oc_frag_copy_list_c(unsigned char *_dst_frame,
38 const unsigned char *_src_frame,int _ystride,
39 const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs){
40 ptrdiff_t fragii;
41 for(fragii=0;fragii<_nfragis;fragii++){
42 ptrdiff_t frag_buf_off;
43 frag_buf_off=_frag_buf_offs[_fragis[fragii]];
44 oc_frag_copy_c(_dst_frame+frag_buf_off,
45 _src_frame+frag_buf_off,_ystride);
46 }
47 }
48
oc_frag_recon_intra_c(unsigned char * _dst,int _ystride,const ogg_int16_t _residue[64])49 void oc_frag_recon_intra_c(unsigned char *_dst,int _ystride,
50 const ogg_int16_t _residue[64]){
51 int i;
52 for(i=0;i<8;i++){
53 int j;
54 for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+128);
55 _dst+=_ystride;
56 }
57 }
58
oc_frag_recon_inter_c(unsigned char * _dst,const unsigned char * _src,int _ystride,const ogg_int16_t _residue[64])59 void oc_frag_recon_inter_c(unsigned char *_dst,
60 const unsigned char *_src,int _ystride,const ogg_int16_t _residue[64]){
61 int i;
62 for(i=0;i<8;i++){
63 int j;
64 for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+_src[j]);
65 _dst+=_ystride;
66 _src+=_ystride;
67 }
68 }
69
oc_frag_recon_inter2_c(unsigned char * _dst,const unsigned char * _src1,const unsigned char * _src2,int _ystride,const ogg_int16_t _residue[64])70 void oc_frag_recon_inter2_c(unsigned char *_dst,const unsigned char *_src1,
71 const unsigned char *_src2,int _ystride,const ogg_int16_t _residue[64]){
72 int i;
73 for(i=0;i<8;i++){
74 int j;
75 for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+(_src1[j]+_src2[j]>>1));
76 _dst+=_ystride;
77 _src1+=_ystride;
78 _src2+=_ystride;
79 }
80 }
81
oc_restore_fpu_c(void)82 void oc_restore_fpu_c(void){}
83