From 741fb4b9e135cfb161a749db88713229038577bb Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Thu, 5 Sep 2013 17:55:35 +0100
Subject: making act segmenter

---
 ffmpeg1/libavcodec/faanidct.c | 169 ------------------------------------------
 1 file changed, 169 deletions(-)
 delete mode 100644 ffmpeg1/libavcodec/faanidct.c

(limited to 'ffmpeg1/libavcodec/faanidct.c')

diff --git a/ffmpeg1/libavcodec/faanidct.c b/ffmpeg1/libavcodec/faanidct.c
deleted file mode 100644
index 5f34fa5..0000000
--- a/ffmpeg1/libavcodec/faanidct.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * Floating point AAN IDCT
- * Copyright (c) 2008 Michael Niedermayer <michaelni@gmx.at>
- *
- * 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
- */
-#include "faanidct.h"
-#include "libavutil/common.h"
-
-/* To allow switching to double. */
-#define FLOAT float
-
-#define B0 1.0000000000000000000000
-#define B1 1.3870398453221474618216 // cos(pi*1/16)sqrt(2)
-#define B2 1.3065629648763765278566 // cos(pi*2/16)sqrt(2)
-#define B3 1.1758756024193587169745 // cos(pi*3/16)sqrt(2)
-#define B4 1.0000000000000000000000 // cos(pi*4/16)sqrt(2)
-#define B5 0.7856949583871021812779 // cos(pi*5/16)sqrt(2)
-#define B6 0.5411961001461969843997 // cos(pi*6/16)sqrt(2)
-#define B7 0.2758993792829430123360 // cos(pi*7/16)sqrt(2)
-
-#define A4 0.70710678118654752438 // cos(pi*4/16)
-#define A2 0.92387953251128675613 // cos(pi*2/16)
-
-static const FLOAT prescale[64]={
-B0*B0/8, B0*B1/8, B0*B2/8, B0*B3/8, B0*B4/8, B0*B5/8, B0*B6/8, B0*B7/8,
-B1*B0/8, B1*B1/8, B1*B2/8, B1*B3/8, B1*B4/8, B1*B5/8, B1*B6/8, B1*B7/8,
-B2*B0/8, B2*B1/8, B2*B2/8, B2*B3/8, B2*B4/8, B2*B5/8, B2*B6/8, B2*B7/8,
-B3*B0/8, B3*B1/8, B3*B2/8, B3*B3/8, B3*B4/8, B3*B5/8, B3*B6/8, B3*B7/8,
-B4*B0/8, B4*B1/8, B4*B2/8, B4*B3/8, B4*B4/8, B4*B5/8, B4*B6/8, B4*B7/8,
-B5*B0/8, B5*B1/8, B5*B2/8, B5*B3/8, B5*B4/8, B5*B5/8, B5*B6/8, B5*B7/8,
-B6*B0/8, B6*B1/8, B6*B2/8, B6*B3/8, B6*B4/8, B6*B5/8, B6*B6/8, B6*B7/8,
-B7*B0/8, B7*B1/8, B7*B2/8, B7*B3/8, B7*B4/8, B7*B5/8, B7*B6/8, B7*B7/8,
-};
-
-static inline void p8idct(int16_t data[64], FLOAT temp[64], uint8_t *dest, int stride, int x, int y, int type){
-    int i;
-    FLOAT av_unused tmp0;
-    FLOAT s04, d04, s17, d17, s26, d26, s53, d53;
-    FLOAT os07, os16, os25, os34;
-    FLOAT od07, od16, od25, od34;
-
-    for(i=0; i<y*8; i+=y){
-        s17= temp[1*x + i] + temp[7*x + i];
-        d17= temp[1*x + i] - temp[7*x + i];
-        s53= temp[5*x + i] + temp[3*x + i];
-        d53= temp[5*x + i] - temp[3*x + i];
-
-        od07=  s17 + s53;
-        od25= (s17 - s53)*(2*A4);
-
-#if 0 //these 2 are equivalent
-        tmp0= (d17 + d53)*(2*A2);
-        od34=  d17*( 2*B6) - tmp0;
-        od16=  d53*(-2*B2) + tmp0;
-#else
-        od34=  d17*(2*(B6-A2)) - d53*(2*A2);
-        od16=  d53*(2*(A2-B2)) + d17*(2*A2);
-#endif
-
-        od16 -= od07;
-        od25 -= od16;
-        od34 += od25;
-
-        s26 = temp[2*x + i] + temp[6*x + i];
-        d26 = temp[2*x + i] - temp[6*x + i];
-        d26*= 2*A4;
-        d26-= s26;
-
-        s04= temp[0*x + i] + temp[4*x + i];
-        d04= temp[0*x + i] - temp[4*x + i];
-
-        os07= s04 + s26;
-        os34= s04 - s26;
-        os16= d04 + d26;
-        os25= d04 - d26;
-
-        if(type==0){
-            temp[0*x + i]= os07 + od07;
-            temp[7*x + i]= os07 - od07;
-            temp[1*x + i]= os16 + od16;
-            temp[6*x + i]= os16 - od16;
-            temp[2*x + i]= os25 + od25;
-            temp[5*x + i]= os25 - od25;
-            temp[3*x + i]= os34 - od34;
-            temp[4*x + i]= os34 + od34;
-        }else if(type==1){
-            data[0*x + i]= lrintf(os07 + od07);
-            data[7*x + i]= lrintf(os07 - od07);
-            data[1*x + i]= lrintf(os16 + od16);
-            data[6*x + i]= lrintf(os16 - od16);
-            data[2*x + i]= lrintf(os25 + od25);
-            data[5*x + i]= lrintf(os25 - od25);
-            data[3*x + i]= lrintf(os34 - od34);
-            data[4*x + i]= lrintf(os34 + od34);
-        }else if(type==2){
-            dest[0*stride + i]= av_clip_uint8(((int)dest[0*stride + i]) + lrintf(os07 + od07));
-            dest[7*stride + i]= av_clip_uint8(((int)dest[7*stride + i]) + lrintf(os07 - od07));
-            dest[1*stride + i]= av_clip_uint8(((int)dest[1*stride + i]) + lrintf(os16 + od16));
-            dest[6*stride + i]= av_clip_uint8(((int)dest[6*stride + i]) + lrintf(os16 - od16));
-            dest[2*stride + i]= av_clip_uint8(((int)dest[2*stride + i]) + lrintf(os25 + od25));
-            dest[5*stride + i]= av_clip_uint8(((int)dest[5*stride + i]) + lrintf(os25 - od25));
-            dest[3*stride + i]= av_clip_uint8(((int)dest[3*stride + i]) + lrintf(os34 - od34));
-            dest[4*stride + i]= av_clip_uint8(((int)dest[4*stride + i]) + lrintf(os34 + od34));
-        }else{
-            dest[0*stride + i]= av_clip_uint8(lrintf(os07 + od07));
-            dest[7*stride + i]= av_clip_uint8(lrintf(os07 - od07));
-            dest[1*stride + i]= av_clip_uint8(lrintf(os16 + od16));
-            dest[6*stride + i]= av_clip_uint8(lrintf(os16 - od16));
-            dest[2*stride + i]= av_clip_uint8(lrintf(os25 + od25));
-            dest[5*stride + i]= av_clip_uint8(lrintf(os25 - od25));
-            dest[3*stride + i]= av_clip_uint8(lrintf(os34 - od34));
-            dest[4*stride + i]= av_clip_uint8(lrintf(os34 + od34));
-        }
-    }
-}
-
-void ff_faanidct(int16_t block[64]){
-    FLOAT temp[64];
-    int i;
-
-    emms_c();
-
-    for(i=0; i<64; i++)
-        temp[i] = block[i] * prescale[i];
-
-    p8idct(block, temp, NULL, 0, 1, 8, 0);
-    p8idct(block, temp, NULL, 0, 8, 1, 1);
-}
-
-void ff_faanidct_add(uint8_t *dest, int line_size, int16_t block[64]){
-    FLOAT temp[64];
-    int i;
-
-    emms_c();
-
-    for(i=0; i<64; i++)
-        temp[i] = block[i] * prescale[i];
-
-    p8idct(block, temp, NULL,         0, 1, 8, 0);
-    p8idct(NULL , temp, dest, line_size, 8, 1, 2);
-}
-
-void ff_faanidct_put(uint8_t *dest, int line_size, int16_t block[64]){
-    FLOAT temp[64];
-    int i;
-
-    emms_c();
-
-    for(i=0; i<64; i++)
-        temp[i] = block[i] * prescale[i];
-
-    p8idct(block, temp, NULL,         0, 1, 8, 0);
-    p8idct(NULL , temp, dest, line_size, 8, 1, 3);
-}
-- 
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