diff options
Diffstat (limited to 'media/libtremor/lib/tremor_window.c')
-rw-r--r-- | media/libtremor/lib/tremor_window.c | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/media/libtremor/lib/tremor_window.c b/media/libtremor/lib/tremor_window.c deleted file mode 100644 index 006a1ee6b..000000000 --- a/media/libtremor/lib/tremor_window.c +++ /dev/null @@ -1,83 +0,0 @@ -/******************************************************************** - * * - * THIS FILE IS PART OF THE OggVorbis 'TREMOR' 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 OggVorbis 'TREMOR' SOURCE CODE IS (C) COPYRIGHT 1994-2002 * - * BY THE Xiph.Org FOUNDATION http://www.xiph.org/ * - * * - ******************************************************************** - - function: window functions - - ********************************************************************/ - -#include <stdlib.h> -#include <math.h> -#include "misc.h" -#include "window.h" -#include "window_lookup.h" - -const void *_vorbis_window(int type, int left){ - - switch(type){ - case 0: - - switch(left){ - case 32: - return vwin64; - case 64: - return vwin128; - case 128: - return vwin256; - case 256: - return vwin512; - case 512: - return vwin1024; - case 1024: - return vwin2048; - case 2048: - return vwin4096; - case 4096: - return vwin8192; - default: - return(0); - } - break; - default: - return(0); - } -} - -void _vorbis_apply_window(ogg_int32_t *d,const void *window_p[2], - long *blocksizes, - int lW,int W,int nW){ - - LOOKUP_T *window[2]={window_p[0],window_p[1]}; - long n=blocksizes[W]; - long ln=blocksizes[lW]; - long rn=blocksizes[nW]; - - long leftbegin=n/4-ln/4; - long leftend=leftbegin+ln/2; - - long rightbegin=n/2+n/4-rn/4; - long rightend=rightbegin+rn/2; - - int i,p; - - for(i=0;i<leftbegin;i++) - d[i]=0; - - for(p=0;i<leftend;i++,p++) - d[i]=MULT31(d[i],window[lW][p]); - - for(i=rightbegin,p=rn/2-1;i<rightend;i++,p--) - d[i]=MULT31(d[i],window[nW][p]); - - for(;i<n;i++) - d[i]=0; -} |