media/libtheora/lib/fragment.c@b8a032363ba2 (annotated)
media/libtheora/lib/fragment.c
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /******************************************************************** |
| michael@0 | 2 | * * |
| michael@0 | 3 | * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. * |
| michael@0 | 4 | * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
| michael@0 | 5 | * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
| michael@0 | 6 | * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
| michael@0 | 7 | * * |
| michael@0 | 8 | * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 * |
| michael@0 | 9 | * by the Xiph.Org Foundation and contributors http://www.xiph.org/ * |
| michael@0 | 10 | * * |
| michael@0 | 11 | ******************************************************************** |
| michael@0 | 12 | |
| michael@0 | 13 | function: |
| michael@0 | 14 | last mod: $Id: fragment.c 17410 2010-09-21 21:53:48Z tterribe $ |
| michael@0 | 15 | |
| michael@0 | 16 | ********************************************************************/ |
| michael@0 | 17 | #include <string.h> |
| michael@0 | 18 | #include "internal.h" |
| michael@0 | 19 | |
| michael@0 | 20 | void oc_frag_copy_c(unsigned char *_dst,const unsigned char *_src,int _ystride){ |
| michael@0 | 21 | int i; |
| michael@0 | 22 | for(i=8;i-->0;){ |
| michael@0 | 23 | memcpy(_dst,_src,8*sizeof(*_dst)); |
| michael@0 | 24 | _dst+=_ystride; |
| michael@0 | 25 | _src+=_ystride; |
| michael@0 | 26 | } |
| michael@0 | 27 | } |
| michael@0 | 28 | |
| michael@0 | 29 | /*Copies the fragments specified by the lists of fragment indices from one |
| michael@0 | 30 | frame to another. |
| michael@0 | 31 | _dst_frame: The reference frame to copy to. |
| michael@0 | 32 | _src_frame: The reference frame to copy from. |
| michael@0 | 33 | _ystride: The row stride of the reference frames. |
| michael@0 | 34 | _fragis: A pointer to a list of fragment indices. |
| michael@0 | 35 | _nfragis: The number of fragment indices to copy. |
| michael@0 | 36 | _frag_buf_offs: The offsets of fragments in the reference frames.*/ |
| michael@0 | 37 | void oc_frag_copy_list_c(unsigned char *_dst_frame, |
| michael@0 | 38 | const unsigned char *_src_frame,int _ystride, |
| michael@0 | 39 | const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs){ |
| michael@0 | 40 | ptrdiff_t fragii; |
| michael@0 | 41 | for(fragii=0;fragii<_nfragis;fragii++){ |
| michael@0 | 42 | ptrdiff_t frag_buf_off; |
| michael@0 | 43 | frag_buf_off=_frag_buf_offs[_fragis[fragii]]; |
| michael@0 | 44 | oc_frag_copy_c(_dst_frame+frag_buf_off, |
| michael@0 | 45 | _src_frame+frag_buf_off,_ystride); |
| michael@0 | 46 | } |
| michael@0 | 47 | } |
| michael@0 | 48 | |
| michael@0 | 49 | void oc_frag_recon_intra_c(unsigned char *_dst,int _ystride, |
| michael@0 | 50 | const ogg_int16_t _residue[64]){ |
| michael@0 | 51 | int i; |
| michael@0 | 52 | for(i=0;i<8;i++){ |
| michael@0 | 53 | int j; |
| michael@0 | 54 | for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+128); |
| michael@0 | 55 | _dst+=_ystride; |
| michael@0 | 56 | } |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | void oc_frag_recon_inter_c(unsigned char *_dst, |
| michael@0 | 60 | const unsigned char *_src,int _ystride,const ogg_int16_t _residue[64]){ |
| michael@0 | 61 | int i; |
| michael@0 | 62 | for(i=0;i<8;i++){ |
| michael@0 | 63 | int j; |
| michael@0 | 64 | for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+_src[j]); |
| michael@0 | 65 | _dst+=_ystride; |
| michael@0 | 66 | _src+=_ystride; |
| michael@0 | 67 | } |
| michael@0 | 68 | } |
| michael@0 | 69 | |
| michael@0 | 70 | void oc_frag_recon_inter2_c(unsigned char *_dst,const unsigned char *_src1, |
| michael@0 | 71 | const unsigned char *_src2,int _ystride,const ogg_int16_t _residue[64]){ |
| michael@0 | 72 | int i; |
| michael@0 | 73 | for(i=0;i<8;i++){ |
| michael@0 | 74 | int j; |
| michael@0 | 75 | for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+(_src1[j]+_src2[j]>>1)); |
| michael@0 | 76 | _dst+=_ystride; |
| michael@0 | 77 | _src1+=_ystride; |
| michael@0 | 78 | _src2+=_ystride; |
| michael@0 | 79 | } |
| michael@0 | 80 | } |
| michael@0 | 81 | |
| michael@0 | 82 | void oc_restore_fpu_c(void){} |
