diff options
| author | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
|---|---|---|
| committer | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
| commit | 22e28216336da876e1fd17f380ce42eaf1446769 (patch) | |
| tree | 444dad3dc7e2656992d29f34f7bce31970c122a5 /ffmpeg/libavcodec/eaidct.c | |
| parent | ae5e8541f6e06e64c28719467cdf366ac57aff31 (diff) | |
chasing indexing error
Diffstat (limited to 'ffmpeg/libavcodec/eaidct.c')
| -rw-r--r-- | ffmpeg/libavcodec/eaidct.c | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/ffmpeg/libavcodec/eaidct.c b/ffmpeg/libavcodec/eaidct.c deleted file mode 100644 index e4840f2..0000000 --- a/ffmpeg/libavcodec/eaidct.c +++ /dev/null @@ -1,88 +0,0 @@ -/* - * Electronic Arts TGQ/TQI/MAD IDCT algorithm - * Copyright (c) 2007-2008 Peter Ross <pross@xvid.org> - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * Electronic Arts TGQ/TQI/MAD IDCT algorithm - * @author Peter Ross <pross@xvid.org> - */ - -#include "eaidct.h" -#include "libavutil/common.h" - -#define ASQRT 181 /* (1/sqrt(2))<<8 */ -#define A4 669 /* cos(pi/8)*sqrt(2)<<9 */ -#define A2 277 /* sin(pi/8)*sqrt(2)<<9 */ -#define A5 196 /* sin(pi/8)<<9 */ - -#define IDCT_TRANSFORM(dest,s0,s1,s2,s3,s4,s5,s6,s7,d0,d1,d2,d3,d4,d5,d6,d7,munge,src) {\ - const int a1 = (src)[s1] + (src)[s7]; \ - const int a7 = (src)[s1] - (src)[s7]; \ - const int a5 = (src)[s5] + (src)[s3]; \ - const int a3 = (src)[s5] - (src)[s3]; \ - const int a2 = (src)[s2] + (src)[s6]; \ - const int a6 = (ASQRT*((src)[s2] - (src)[s6]))>>8; \ - const int a0 = (src)[s0] + (src)[s4]; \ - const int a4 = (src)[s0] - (src)[s4]; \ - const int b0 = (((A4-A5)*a7 - A5*a3)>>9) + a1+a5; \ - const int b1 = (((A4-A5)*a7 - A5*a3)>>9) + ((ASQRT*(a1-a5))>>8); \ - const int b2 = (((A2+A5)*a3 + A5*a7)>>9) + ((ASQRT*(a1-a5))>>8); \ - const int b3 = ((A2+A5)*a3 + A5*a7)>>9; \ - (dest)[d0] = munge(a0+a2+a6+b0); \ - (dest)[d1] = munge(a4+a6 +b1); \ - (dest)[d2] = munge(a4-a6 +b2); \ - (dest)[d3] = munge(a0-a2-a6+b3); \ - (dest)[d4] = munge(a0-a2-a6-b3); \ - (dest)[d5] = munge(a4-a6 -b2); \ - (dest)[d6] = munge(a4+a6 -b1); \ - (dest)[d7] = munge(a0+a2+a6-b0); \ -} -/* end IDCT_TRANSFORM macro */ - -#define MUNGE_NONE(x) (x) -#define IDCT_COL(dest,src) IDCT_TRANSFORM(dest,0,8,16,24,32,40,48,56,0,8,16,24,32,40,48,56,MUNGE_NONE,src) - -#define MUNGE_8BIT(x) av_clip_uint8((x)>>4) -#define IDCT_ROW(dest,src) IDCT_TRANSFORM(dest,0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,MUNGE_8BIT,src) - -static inline void ea_idct_col(int16_t *dest, const int16_t *src) { - if ((src[8]|src[16]|src[24]|src[32]|src[40]|src[48]|src[56])==0) { - dest[0] = - dest[8] = - dest[16] = - dest[24] = - dest[32] = - dest[40] = - dest[48] = - dest[56] = src[0]; - }else - IDCT_COL(dest, src); -} - -void ff_ea_idct_put_c(uint8_t *dest, int linesize, int16_t *block) { - int i; - int16_t temp[64]; - block[0] += 4; - for (i=0; i<8; i++) - ea_idct_col(&temp[i], &block[i]); - for (i=0; i<8; i++) - IDCT_ROW( (&dest[i*linesize]), (&temp[8*i]) ); -} |
