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da66b6313e
ffmpeg/libavcodec/snow.c
Michael Niedermayer da66b6313e optimize quantizaton (about 3x faster) 
further opt is easily possible but could lead to overflows depening upon coefficient range, so this wont be done yet as it would make the code somewhat less flexible

Originally committed as revision 3354 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-07-27 17:38:53 +00:00

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/*
* Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "avcodec.h"
#include "common.h"
#include "dsputil.h"
#include "cabac.h"
#include "mpegvideo.h"
#undef NDEBUG
#include <assert.h>
#define MAX_DECOMPOSITIONS 8
#define MAX_PLANES 4
#define DWTELEM int
#define QROOT 8
static const int8_t quant3[256]={
0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, 0,
};
static const int8_t quant3b[256]={
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
};
static const int8_t quant5[256]={
0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,-1,
};
static const int8_t quant7[256]={
0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,
-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-2,-1,-1,
};
static const int8_t quant9[256]={
0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,
-3,-3,-3,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-2,-1,-1,
};
static const int8_t quant11[256]={
0, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-4,-4,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,-4,
-4,-4,-4,-4,-4,-3,-3,-3,-3,-3,-3,-3,-2,-2,-2,-1,
};
static const int8_t quant13[256]={
0, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4,
4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,
-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-6,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,-5,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-2,-2,-1,
};
#define OBMC_MAX 64
#if 0 //64*cubic
static const uint8_t obmc32[1024]={
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0,
0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 7, 8, 8, 8, 8, 7, 7, 6, 6, 5, 4, 4, 3, 2, 2, 1, 1, 0, 0,
0, 0, 1, 2, 2, 3, 4, 6, 7, 8, 9,10,11,12,12,12,12,12,12,11,10, 9, 8, 7, 6, 4, 3, 2, 2, 1, 0, 0,
0, 1, 1, 2, 3, 5, 6, 8,10,11,13,14,15,16,17,18,18,17,16,15,14,13,11,10, 8, 6, 5, 3, 2, 1, 1, 0,
0, 1, 1, 3, 4, 6, 8,10,13,15,17,19,20,22,22,23,23,22,22,20,19,17,15,13,10, 8, 6, 4, 3, 1, 1, 0,
0, 1, 2, 4, 6, 8,10,13,16,19,21,23,25,27,28,29,29,28,27,25,23,21,19,16,13,10, 8, 6, 4, 2, 1, 0,
0, 1, 2, 4, 7,10,13,16,19,22,25,28,31,33,34,35,35,34,33,31,28,25,22,19,16,13,10, 7, 4, 2, 1, 0,
0, 1, 3, 5, 8,11,15,19,22,26,30,33,36,38,40,41,41,40,38,36,33,30,26,22,19,15,11, 8, 5, 3, 1, 0,
0, 1, 3, 6, 9,12,17,21,25,30,34,38,41,44,45,46,46,45,44,41,38,34,30,25,21,17,12, 9, 6, 3, 1, 0,
0, 1, 3, 6,10,14,19,23,28,33,38,42,45,48,51,52,52,51,48,45,42,38,33,28,23,19,14,10, 6, 3, 1, 0,
0, 1, 4, 7,11,15,20,25,31,36,41,45,49,52,55,56,56,55,52,49,45,41,36,31,25,20,15,11, 7, 4, 1, 0,
0, 2, 4, 7,12,16,22,27,33,38,44,48,52,56,58,60,60,58,56,52,48,44,38,33,27,22,16,12, 7, 4, 2, 0,
0, 1, 4, 8,12,17,22,28,34,40,45,51,55,58,61,62,62,61,58,55,51,45,40,34,28,22,17,12, 8, 4, 1, 0,
0, 2, 4, 8,12,18,23,29,35,41,46,52,56,60,62,64,64,62,60,56,52,46,41,35,29,23,18,12, 8, 4, 2, 0,
0, 2, 4, 8,12,18,23,29,35,41,46,52,56,60,62,64,64,62,60,56,52,46,41,35,29,23,18,12, 8, 4, 2, 0,
0, 1, 4, 8,12,17,22,28,34,40,45,51,55,58,61,62,62,61,58,55,51,45,40,34,28,22,17,12, 8, 4, 1, 0,
0, 2, 4, 7,12,16,22,27,33,38,44,48,52,56,58,60,60,58,56,52,48,44,38,33,27,22,16,12, 7, 4, 2, 0,
0, 1, 4, 7,11,15,20,25,31,36,41,45,49,52,55,56,56,55,52,49,45,41,36,31,25,20,15,11, 7, 4, 1, 0,
0, 1, 3, 6,10,14,19,23,28,33,38,42,45,48,51,52,52,51,48,45,42,38,33,28,23,19,14,10, 6, 3, 1, 0,
0, 1, 3, 6, 9,12,17,21,25,30,34,38,41,44,45,46,46,45,44,41,38,34,30,25,21,17,12, 9, 6, 3, 1, 0,
0, 1, 3, 5, 8,11,15,19,22,26,30,33,36,38,40,41,41,40,38,36,33,30,26,22,19,15,11, 8, 5, 3, 1, 0,
0, 1, 2, 4, 7,10,13,16,19,22,25,28,31,33,34,35,35,34,33,31,28,25,22,19,16,13,10, 7, 4, 2, 1, 0,
0, 1, 2, 4, 6, 8,10,13,16,19,21,23,25,27,28,29,29,28,27,25,23,21,19,16,13,10, 8, 6, 4, 2, 1, 0,
0, 1, 1, 3, 4, 6, 8,10,13,15,17,19,20,22,22,23,23,22,22,20,19,17,15,13,10, 8, 6, 4, 3, 1, 1, 0,
0, 1, 1, 2, 3, 5, 6, 8,10,11,13,14,15,16,17,18,18,17,16,15,14,13,11,10, 8, 6, 5, 3, 2, 1, 1, 0,
0, 0, 1, 2, 2, 3, 4, 6, 7, 8, 9,10,11,12,12,12,12,12,12,11,10, 9, 8, 7, 6, 4, 3, 2, 2, 1, 0, 0,
0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 7, 8, 8, 8, 8, 7, 7, 6, 6, 5, 4, 4, 3, 2, 2, 1, 1, 0, 0,
0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
//error:0.000022
};
static const uint8_t obmc16[256]={
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 1, 1, 2, 4, 5, 5, 6, 6, 5, 5, 4, 2, 1, 1, 0,
0, 1, 4, 6, 9,11,13,15,15,13,11, 9, 6, 4, 1, 0,
0, 2, 6,11,15,20,24,26,26,24,20,15,11, 6, 2, 0,
0, 4, 9,15,23,29,34,38,38,34,29,23,15, 9, 4, 0,
0, 5,11,20,29,38,45,49,49,45,38,29,20,11, 5, 0,
1, 5,13,24,34,45,53,57,57,53,45,34,24,13, 5, 1,
1, 6,15,26,38,49,57,62,62,57,49,38,26,15, 6, 1,
1, 6,15,26,38,49,57,62,62,57,49,38,26,15, 6, 1,
1, 5,13,24,34,45,53,57,57,53,45,34,24,13, 5, 1,
0, 5,11,20,29,38,45,49,49,45,38,29,20,11, 5, 0,
0, 4, 9,15,23,29,34,38,38,34,29,23,15, 9, 4, 0,
0, 2, 6,11,15,20,24,26,26,24,20,15,11, 6, 2, 0,
0, 1, 4, 6, 9,11,13,15,15,13,11, 9, 6, 4, 1, 0,
0, 1, 1, 2, 4, 5, 5, 6, 6, 5, 5, 4, 2, 1, 1, 0,
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
//error:0.000033
};
#elif 1 // 64*linear
static const uint8_t obmc32[1024]={
0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 0,
0, 1, 2, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 8, 9,10,10, 9, 8, 8, 7, 7, 6, 5, 5, 4, 3, 3, 2, 2, 1, 0,
0, 1, 2, 3, 4, 5, 6, 7, 7, 8, 9,10,11,12,13,14,14,13,12,11,10, 9, 8, 7, 7, 6, 5, 4, 3, 2, 1, 0,
1, 2, 3, 4, 5, 6, 7, 8,10,11,12,13,14,15,16,17,17,16,15,14,13,12,11,10, 8, 7, 6, 5, 4, 3, 2, 1,
1, 2, 3, 5, 6, 8, 9,10,12,13,14,16,17,19,20,21,21,20,19,17,16,14,13,12,10, 9, 8, 6, 5, 3, 2, 1,
1, 2, 4, 6, 7, 9,11,12,14,15,17,19,20,22,24,25,25,24,22,20,19,17,15,14,12,11, 9, 7, 6, 4, 2, 1,
1, 3, 5, 7, 8,10,12,14,16,18,20,22,23,25,27,29,29,27,25,23,22,20,18,16,14,12,10, 8, 7, 5, 3, 1,
1, 3, 5, 7,10,12,14,16,18,20,22,24,27,29,31,33,33,31,29,27,24,22,20,18,16,14,12,10, 7, 5, 3, 1,
1, 4, 6, 8,11,13,15,18,20,23,25,27,30,32,34,37,37,34,32,30,27,25,23,20,18,15,13,11, 8, 6, 4, 1,
1, 4, 7, 9,12,14,17,20,22,25,28,30,33,35,38,41,41,38,35,33,30,28,25,22,20,17,14,12, 9, 7, 4, 1,
1, 4, 7,10,13,16,19,22,24,27,30,33,36,39,42,45,45,42,39,36,33,30,27,24,22,19,16,13,10, 7, 4, 1,
2, 5, 8,11,14,17,20,23,27,30,33,36,39,42,45,48,48,45,42,39,36,33,30,27,23,20,17,14,11, 8, 5, 2,
2, 5, 8,12,15,19,22,25,29,32,35,39,42,46,49,52,52,49,46,42,39,35,32,29,25,22,19,15,12, 8, 5, 2,
2, 5, 9,13,16,20,24,27,31,34,38,42,45,49,53,56,56,53,49,45,42,38,34,31,27,24,20,16,13, 9, 5, 2,
2, 6,10,14,17,21,25,29,33,37,41,45,48,52,56,60,60,56,52,48,45,41,37,33,29,25,21,17,14,10, 6, 2,
2, 6,10,14,17,21,25,29,33,37,41,45,48,52,56,60,60,56,52,48,45,41,37,33,29,25,21,17,14,10, 6, 2,
2, 5, 9,13,16,20,24,27,31,34,38,42,45,49,53,56,56,53,49,45,42,38,34,31,27,24,20,16,13, 9, 5, 2,
2, 5, 8,12,15,19,22,25,29,32,35,39,42,46,49,52,52,49,46,42,39,35,32,29,25,22,19,15,12, 8, 5, 2,
2, 5, 8,11,14,17,20,23,27,30,33,36,39,42,45,48,48,45,42,39,36,33,30,27,23,20,17,14,11, 8, 5, 2,
1, 4, 7,10,13,16,19,22,24,27,30,33,36,39,42,45,45,42,39,36,33,30,27,24,22,19,16,13,10, 7, 4, 1,
1, 4, 7, 9,12,14,17,20,22,25,28,30,33,35,38,41,41,38,35,33,30,28,25,22,20,17,14,12, 9, 7, 4, 1,
1, 4, 6, 8,11,13,15,18,20,23,25,27,30,32,34,37,37,34,32,30,27,25,23,20,18,15,13,11, 8, 6, 4, 1,
1, 3, 5, 7,10,12,14,16,18,20,22,24,27,29,31,33,33,31,29,27,24,22,20,18,16,14,12,10, 7, 5, 3, 1,
1, 3, 5, 7, 8,10,12,14,16,18,20,22,23,25,27,29,29,27,25,23,22,20,18,16,14,12,10, 8, 7, 5, 3, 1,
1, 2, 4, 6, 7, 9,11,12,14,15,17,19,20,22,24,25,25,24,22,20,19,17,15,14,12,11, 9, 7, 6, 4, 2, 1,
1, 2, 3, 5, 6, 8, 9,10,12,13,14,16,17,19,20,21,21,20,19,17,16,14,13,12,10, 9, 8, 6, 5, 3, 2, 1,
1, 2, 3, 4, 5, 6, 7, 8,10,11,12,13,14,15,16,17,17,16,15,14,13,12,11,10, 8, 7, 6, 5, 4, 3, 2, 1,
0, 1, 2, 3, 4, 5, 6, 7, 7, 8, 9,10,11,12,13,14,14,13,12,11,10, 9, 8, 7, 7, 6, 5, 4, 3, 2, 1, 0,
0, 1, 2, 2, 3, 3, 4, 5, 5, 6, 7, 7, 8, 8, 9,10,10, 9, 8, 8, 7, 7, 6, 5, 5, 4, 3, 3, 2, 2, 1, 0,
0, 1, 1, 1, 2, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 0,
0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0,
//error:0.000020
};
static const uint8_t obmc16[256]={
0, 1, 1, 2, 2, 3, 3, 4, 4, 3, 3, 2, 2, 1, 1, 0,
1, 2, 4, 5, 7, 8,10,11,11,10, 8, 7, 5, 4, 2, 1,
1, 4, 6, 9,11,14,16,19,19,16,14,11, 9, 6, 4, 1,
2, 5, 9,12,16,19,23,26,26,23,19,16,12, 9, 5, 2,
2, 7,11,16,20,25,29,34,34,29,25,20,16,11, 7, 2,
3, 8,14,19,25,30,36,41,41,36,30,25,19,14, 8, 3,
3,10,16,23,29,36,42,49,49,42,36,29,23,16,10, 3,
4,11,19,26,34,41,49,56,56,49,41,34,26,19,11, 4,
4,11,19,26,34,41,49,56,56,49,41,34,26,19,11, 4,
3,10,16,23,29,36,42,49,49,42,36,29,23,16,10, 3,
3, 8,14,19,25,30,36,41,41,36,30,25,19,14, 8, 3,
2, 7,11,16,20,25,29,34,34,29,25,20,16,11, 7, 2,
2, 5, 9,12,16,19,23,26,26,23,19,16,12, 9, 5, 2,
1, 4, 6, 9,11,14,16,19,19,16,14,11, 9, 6, 4, 1,
1, 2, 4, 5, 7, 8,10,11,11,10, 8, 7, 5, 4, 2, 1,
0, 1, 1, 2, 2, 3, 3, 4, 4, 3, 3, 2, 2, 1, 1, 0,
//error:0.000015
};
#else //64*cos
static const uint8_t obmc32[1024]={
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0,
0, 0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0,
0, 0, 1, 1, 2, 3, 4, 5, 6, 7, 9,10,11,11,12,12,12,12,11,11,10, 9, 7, 6, 5, 4, 3, 2, 1, 1, 0, 0,
0, 0, 1, 2, 3, 5, 6, 8, 9,11,12,14,15,16,17,17,17,17,16,15,14,12,11, 9, 8, 6, 5, 3, 2, 1, 0, 0,
0, 1, 1, 2, 4, 6, 8,10,12,15,17,19,20,21,22,23,23,22,21,20,19,17,15,12,10, 8, 6, 4, 2, 1, 1, 0,
0, 1, 2, 3, 5, 8,10,13,16,19,21,24,26,27,28,29,29,28,27,26,24,21,19,16,13,10, 8, 5, 3, 2, 1, 0,
0, 1, 2, 4, 6, 9,12,16,19,23,26,29,31,33,34,35,35,34,33,31,29,26,23,19,16,12, 9, 6, 4, 2, 1, 0,
0, 1, 3, 5, 7,11,15,19,23,26,30,34,37,39,40,41,41,40,39,37,34,30,26,23,19,15,11, 7, 5, 3, 1, 0,
0, 1, 3, 5, 9,12,17,21,26,30,35,38,42,44,46,47,47,46,44,42,38,35,30,26,21,17,12, 9, 5, 3, 1, 0,
0, 1, 3, 6, 9,14,19,24,29,34,38,43,46,49,51,52,52,51,49,46,43,38,34,29,24,19,14, 9, 6, 3, 1, 0,
0, 1, 3, 6,11,15,20,26,31,37,42,46,50,53,56,57,57,56,53,50,46,42,37,31,26,20,15,11, 6, 3, 1, 0,
0, 1, 3, 7,11,16,21,27,33,39,44,49,53,57,59,60,60,59,57,53,49,44,39,33,27,21,16,11, 7, 3, 1, 0,
0, 1, 4, 7,12,17,22,28,34,40,46,51,56,59,61,63,63,61,59,56,51,46,40,34,28,22,17,12, 7, 4, 1, 0,
0, 1, 4, 7,12,17,23,29,35,41,47,52,57,60,63,64,64,63,60,57,52,47,41,35,29,23,17,12, 7, 4, 1, 0,
0, 1, 4, 7,12,17,23,29,35,41,47,52,57,60,63,64,64,63,60,57,52,47,41,35,29,23,17,12, 7, 4, 1, 0,
0, 1, 4, 7,12,17,22,28,34,40,46,51,56,59,61,63,63,61,59,56,51,46,40,34,28,22,17,12, 7, 4, 1, 0,
0, 1, 3, 7,11,16,21,27,33,39,44,49,53,57,59,60,60,59,57,53,49,44,39,33,27,21,16,11, 7, 3, 1, 0,
0, 1, 3, 6,11,15,20,26,31,37,42,46,50,53,56,57,57,56,53,50,46,42,37,31,26,20,15,11, 6, 3, 1, 0,
0, 1, 3, 6, 9,14,19,24,29,34,38,43,46,49,51,52,52,51,49,46,43,38,34,29,24,19,14, 9, 6, 3, 1, 0,
0, 1, 3, 5, 9,12,17,21,26,30,35,38,42,44,46,47,47,46,44,42,38,35,30,26,21,17,12, 9, 5, 3, 1, 0,
0, 1, 3, 5, 7,11,15,19,23,26,30,34,37,39,40,41,41,40,39,37,34,30,26,23,19,15,11, 7, 5, 3, 1, 0,
0, 1, 2, 4, 6, 9,12,16,19,23,26,29,31,33,34,35,35,34,33,31,29,26,23,19,16,12, 9, 6, 4, 2, 1, 0,
0, 1, 2, 3, 5, 8,10,13,16,19,21,24,26,27,28,29,29,28,27,26,24,21,19,16,13,10, 8, 5, 3, 2, 1, 0,
0, 1, 1, 2, 4, 6, 8,10,12,15,17,19,20,21,22,23,23,22,21,20,19,17,15,12,10, 8, 6, 4, 2, 1, 1, 0,
0, 0, 1, 2, 3, 5, 6, 8, 9,11,12,14,15,16,17,17,17,17,16,15,14,12,11, 9, 8, 6, 5, 3, 2, 1, 0, 0,
0, 0, 1, 1, 2, 3, 4, 5, 6, 7, 9,10,11,11,12,12,12,12,11,11,10, 9, 7, 6, 5, 4, 3, 2, 1, 1, 0, 0,
0, 0, 1, 1, 1, 2, 2, 3, 4, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 0, 0,
0, 0, 0, 1, 1, 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
//error:0.000022
};
static const uint8_t obmc16[256]={
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
0, 0, 1, 2, 3, 4, 5, 5, 5, 5, 4, 3, 2, 1, 0, 0,
0, 1, 3, 6, 8,11,13,14,14,13,11, 8, 6, 3, 1, 0,
0, 2, 6,10,15,20,24,26,26,24,20,15,10, 6, 2, 0,
0, 3, 8,16,23,30,35,38,38,35,30,23,16, 8, 3, 0,
1, 4,11,20,30,39,46,49,49,46,39,30,20,11, 4, 1,
1, 5,13,24,35,46,54,58,58,54,46,35,24,13, 5, 1,
0, 5,14,26,38,49,58,63,63,58,49,38,26,14, 5, 0,
0, 5,14,26,38,49,58,63,63,58,49,38,26,14, 5, 0,
1, 5,13,24,35,46,54,58,58,54,46,35,24,13, 5, 1,
1, 4,11,20,30,39,46,49,49,46,39,30,20,11, 4, 1,
0, 3, 8,16,23,30,35,38,38,35,30,23,16, 8, 3, 0,
0, 2, 6,10,15,20,24,26,26,24,20,15,10, 6, 2, 0,
0, 1, 3, 6, 8,11,13,14,14,13,11, 8, 6, 3, 1, 0,
0, 0, 1, 2, 3, 4, 5, 5, 5, 5, 4, 3, 2, 1, 0, 0,
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
//error:0.000022
};
#endif
typedef struct SubBand{
int level;
int stride;
int width;
int height;
int qlog; ///< log(qscale)/log[2^(1/6)]
DWTELEM *buf;
struct SubBand *parent;
uint8_t state[/*7*2*/ 7 + 512][32];
}SubBand;
typedef struct Plane{
int width;
int height;
SubBand band[MAX_DECOMPOSITIONS][4];
}Plane;
typedef struct SnowContext{
// MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to make the motion estimation eventually independant of MpegEncContext, so this will be removed then (FIXME/XXX)
AVCodecContext *avctx;
CABACContext c;
DSPContext dsp;
AVFrame input_picture;
AVFrame current_picture;
AVFrame last_picture;
AVFrame mconly_picture;
// uint8_t q_context[16];
uint8_t header_state[32];
int keyframe;
int version;
int spatial_decomposition_type;
int temporal_decomposition_type;
int spatial_decomposition_count;
int temporal_decomposition_count;
DWTELEM *spatial_dwt_buffer;
DWTELEM *pred_buffer;
int colorspace_type;
int chroma_h_shift;
int chroma_v_shift;
int spatial_scalability;
int qlog;
int mv_scale;
int qbias;
#define QBIAS_SHIFT 3
int b_width; //FIXME remove?
int b_height; //FIXME remove?
Plane plane[MAX_PLANES];
SubBand mb_band;
SubBand mv_band[2];
uint16_t *mb_type;
uint8_t *mb_mean;
uint32_t *dummy;
int16_t (*motion_val8)[2];
int16_t (*motion_val16)[2];
MpegEncContext m; // needed for motion estimation, should not be used for anything else, the idea is to make the motion estimation eventually independant of MpegEncContext, so this will be removed then (FIXME/XXX)
}SnowContext;
#define QEXPSHIFT 7 //FIXME try to change this to 0
static const uint8_t qexp[8]={
128, 140, 152, 166, 181, 197, 215, 235
// 64, 70, 76, 83, 91, 99, 108, 117
// 32, 35, 38, 41, 45, 49, 54, 59
// 16, 17, 19, 21, 23, 25, 27, 29
// 8, 9, 10, 10, 11, 12, 13, 15
};
static inline int mirror(int v, int m){
if (v<0) return -v;
else if(v>m) return 2*m-v;
else return v;
}
static inline void put_symbol(CABACContext *c, uint8_t *state, int v, int is_signed){
int i;
if(v){
const int a= ABS(v);
const int e= av_log2(a);
#if 1
const int el= FFMIN(e, 10);
put_cabac(c, state+0, 0);
for(i=0; i<el; i++){
put_cabac(c, state+1+i, 1); //1..10
}
for(; i<e; i++){
put_cabac(c, state+1+9, 1); //1..10
}
put_cabac(c, state+1+FFMIN(i,9), 0);
for(i=e-1; i>=el; i--){
put_cabac(c, state+22+9, (a>>i)&1); //22..31
}
for(; i>=0; i--){
put_cabac(c, state+22+i, (a>>i)&1); //22..31
}
if(is_signed)
put_cabac(c, state+11 + el, v < 0); //11..21
#else
put_cabac(c, state+0, 0);
if(e<=9){
for(i=0; i<e; i++){
put_cabac(c, state+1+i, 1); //1..10
}
put_cabac(c, state+1+i, 0);
for(i=e-1; i>=0; i--){
put_cabac(c, state+22+i, (a>>i)&1); //22..31
}
if(is_signed)
put_cabac(c, state+11 + e, v < 0); //11..21
}else{
for(i=0; i<e; i++){
put_cabac(c, state+1+FFMIN(i,9), 1); //1..10
}
put_cabac(c, state+1+FFMIN(i,9), 0);
for(i=e-1; i>=0; i--){
put_cabac(c, state+22+FFMIN(i,9), (a>>i)&1); //22..31
}
if(is_signed)
put_cabac(c, state+11 + FFMIN(e,10), v < 0); //11..21
}
#endif
}else{
put_cabac(c, state+0, 1);
}
}
static inline int get_symbol(CABACContext *c, uint8_t *state, int is_signed){
if(get_cabac(c, state+0))
return 0;
else{
int i, e, a, el;
//FIXME try to merge loops with FFMIN() maybe they are equally fast and they are surly cuter
for(e=0; e<10; e++){
if(get_cabac(c, state + 1 + e)==0) // 1..10
break;
}
el= e;
if(e==10){
while(get_cabac(c, state + 1 + 9)) //10
e++;
}
a= 1;
for(i=e-1; i>=el; i--){
a += a + get_cabac(c, state+22+9); //31
}
for(; i>=0; i--){
a += a + get_cabac(c, state+22+i); //22..31
}
if(is_signed && get_cabac(c, state+11 + el)) //11..21
return -a;
else
return a;
}
}
static always_inline void lift(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){
const int mirror_left= !highpass;
const int mirror_right= (width&1) ^ highpass;
const int w= (width>>1) - 1 + (highpass & width);
int i;
#define LIFT(src, ref, inv) ((src) + ((inv) ? - (ref) : + (ref)))
if(mirror_left){
dst[0] = LIFT(src[0], ((mul*2*ref[0]+add)>>shift), inverse);
dst += dst_step;
src += src_step;
}
for(i=0; i<w; i++){
dst[i*dst_step] = LIFT(src[i*src_step], ((mul*(ref[i*ref_step] + ref[(i+1)*ref_step])+add)>>shift), inverse);
}
if(mirror_right){
dst[w*dst_step] = LIFT(src[w*src_step], ((mul*2*ref[w*ref_step]+add)>>shift), inverse);
}
}
static always_inline void lift5(DWTELEM *dst, DWTELEM *src, DWTELEM *ref, int dst_step, int src_step, int ref_step, int width, int mul, int add, int shift, int highpass, int inverse){
const int mirror_left= !highpass;
const int mirror_right= (width&1) ^ highpass;
const int w= (width>>1) - 1 + (highpass & width);
int i;
if(mirror_left){
int r= 3*2*ref[0];
r += r>>4;
r += r>>8;
dst[0] = LIFT(src[0], ((r+add)>>shift), inverse);
dst += dst_step;
src += src_step;
}
for(i=0; i<w; i++){
int r= 3*(ref[i*ref_step] + ref[(i+1)*ref_step]);
r += r>>4;
r += r>>8;
dst[i*dst_step] = LIFT(src[i*src_step], ((r+add)>>shift), inverse);
}
if(mirror_right){
int r= 3*2*ref[w*ref_step];
r += r>>4;
r += r>>8;
dst[w*dst_step] = LIFT(src[w*src_step], ((r+add)>>shift), inverse);
}
}
static void inplace_lift(int *dst, int width, int *coeffs, int n, int shift, int start, int inverse){
int x, i;
for(x=start; x<width; x+=2){
int64_t sum=0;
for(i=0; i<n; i++){
int x2= x + 2*i - n + 1;
if (x2< 0) x2= -x2;
else if(x2>=width) x2= 2*width-x2-2;
sum += coeffs[i]*(int64_t)dst[x2];
}
if(inverse) dst[x] -= (sum + (1<<shift)/2)>>shift;
else dst[x] += (sum + (1<<shift)/2)>>shift;
}
}
static void inplace_liftV(int *dst, int width, int height, int stride, int *coeffs, int n, int shift, int start, int inverse){
int x, y, i;
for(y=start; y<height; y+=2){
for(x=0; x<width; x++){
int64_t sum=0;
for(i=0; i<n; i++){
int y2= y + 2*i - n + 1;
if (y2< 0) y2= -y2;
else if(y2>=height) y2= 2*height-y2-2;
sum += coeffs[i]*(int64_t)dst[x + y2*stride];
}
if(inverse) dst[x + y*stride] -= (sum + (1<<shift)/2)>>shift;
else dst[x + y*stride] += (sum + (1<<shift)/2)>>shift;
}
}
}
#define SCALEX 1
#define LX0 0
#define LX1 1
#if 0 // more accurate 9/7
#define N1 2
#define SHIFT1 14
#define COEFFS1 (int[]){-25987,-25987}
#define N2 2
#define SHIFT2 19
#define COEFFS2 (int[]){-27777,-27777}
#define N3 2
#define SHIFT3 15
#define COEFFS3 (int[]){28931,28931}
#define N4 2
#define SHIFT4 15
#define COEFFS4 (int[]){14533,14533}
#elif 1 // 13/7 CRF
#define N1 4
#define SHIFT1 4
#define COEFFS1 (int[]){1,-9,-9,1}
#define N2 4
#define SHIFT2 4
#define COEFFS2 (int[]){-1,5,5,-1}
#define N3 0
#define SHIFT3 1
#define COEFFS3 NULL
#define N4 0
#define SHIFT4 1
#define COEFFS4 NULL
#elif 1 // 3/5
#define LX0 1
#define LX1 0
#define SCALEX 0.5
#define N1 2
#define SHIFT1 1
#define COEFFS1 (int[]){1,1}
#define N2 2
#define SHIFT2 2
#define COEFFS2 (int[]){-1,-1}
#define N3 0
#define SHIFT3 0
#define COEFFS3 NULL
#define N4 0
#define SHIFT4 0
#define COEFFS4 NULL
#elif 1 // 11/5
#define N1 0
#define SHIFT1 1
#define COEFFS1 NULL
#define N2 2
#define SHIFT2 2
#define COEFFS2 (int[]){-1,-1}
#define N3 2
#define SHIFT3 0
#define COEFFS3 (int[]){-1,-1}
#define N4 4
#define SHIFT4 7
#define COEFFS4 (int[]){-5,29,29,-5}
#define SCALEX 4
#elif 1 // 9/7 CDF
#define N1 2
#define SHIFT1 7
#define COEFFS1 (int[]){-203,-203}
#define N2 2
#define SHIFT2 12
#define COEFFS2 (int[]){-217,-217}
#define N3 2
#define SHIFT3 7
#define COEFFS3 (int[]){113,113}
#define N4 2
#define SHIFT4 9
#define COEFFS4 (int[]){227,227}
#define SCALEX 1
#elif 1 // 7/5 CDF
#define N1 0
#define SHIFT1 1
#define COEFFS1 NULL
#define N2 2
#define SHIFT2 2
#define COEFFS2 (int[]){-1,-1}
#define N3 2
#define SHIFT3 0
#define COEFFS3 (int[]){-1,-1}
#define N4 2
#define SHIFT4 4
#define COEFFS4 (int[]){3,3}
#elif 1 // 9/7 MN
#define N1 4
#define SHIFT1 4
#define COEFFS1 (int[]){1,-9,-9,1}
#define N2 2
#define SHIFT2 2
#define COEFFS2 (int[]){1,1}
#define N3 0
#define SHIFT3 1
#define COEFFS3 NULL
#define N4 0
#define SHIFT4 1
#define COEFFS4 NULL
#else // 13/7 CRF
#define N1 4
#define SHIFT1 4
#define COEFFS1 (int[]){1,-9,-9,1}
#define N2 4
#define SHIFT2 4
#define COEFFS2 (int[]){-1,5,5,-1}
#define N3 0
#define SHIFT3 1
#define COEFFS3 NULL
#define N4 0
#define SHIFT4 1
#define COEFFS4 NULL
#endif
static void horizontal_decomposeX(int *b, int width){
int temp[width];
const int width2= width>>1;
const int w2= (width+1)>>1;
int A1,A2,A3,A4, x;
inplace_lift(b, width, COEFFS1, N1, SHIFT1, LX1, 0);
inplace_lift(b, width, COEFFS2, N2, SHIFT2, LX0, 0);
inplace_lift(b, width, COEFFS3, N3, SHIFT3, LX1, 0);
inplace_lift(b, width, COEFFS4, N4, SHIFT4, LX0, 0);
for(x=0; x<width2; x++){
temp[x ]= b[2*x ];
temp[x+w2]= b[2*x + 1];
}
if(width&1)
temp[x ]= b[2*x ];
memcpy(b, temp, width*sizeof(int));
}
static void horizontal_composeX(int *b, int width){
int temp[width];
const int width2= width>>1;
int A1,A2,A3,A4, x;
const int w2= (width+1)>>1;
memcpy(temp, b, width*sizeof(int));
for(x=0; x<width2; x++){
b[2*x ]= temp[x ];
b[2*x + 1]= temp[x+w2];
}
if(width&1)
b[2*x ]= temp[x ];
inplace_lift(b, width, COEFFS4, N4, SHIFT4, LX0, 1);
inplace_lift(b, width, COEFFS3, N3, SHIFT3, LX1, 1);
inplace_lift(b, width, COEFFS2, N2, SHIFT2, LX0, 1);
inplace_lift(b, width, COEFFS1, N1, SHIFT1, LX1, 1);
}
static void spatial_decomposeX(int *buffer, int width, int height, int stride){
int x, y;
for(y=0; y<height; y++){
for(x=0; x<width; x++){
buffer[y*stride + x] *= SCALEX;
}
}
for(y=0; y<height; y++){
horizontal_decomposeX(buffer + y*stride, width);
}
inplace_liftV(buffer, width, height, stride, COEFFS1, N1, SHIFT1, LX1, 0);
inplace_liftV(buffer, width, height, stride, COEFFS2, N2, SHIFT2, LX0, 0);
inplace_liftV(buffer, width, height, stride, COEFFS3, N3, SHIFT3, LX1, 0);
inplace_liftV(buffer, width, height, stride, COEFFS4, N4, SHIFT4, LX0, 0);
}
static void spatial_composeX(int *buffer, int width, int height, int stride){
int x, y;
inplace_liftV(buffer, width, height, stride, COEFFS4, N4, SHIFT4, LX0, 1);
inplace_liftV(buffer, width, height, stride, COEFFS3, N3, SHIFT3, LX1, 1);
inplace_liftV(buffer, width, height, stride, COEFFS2, N2, SHIFT2, LX0, 1);
inplace_liftV(buffer, width, height, stride, COEFFS1, N1, SHIFT1, LX1, 1);
for(y=0; y<height; y++){
horizontal_composeX(buffer + y*stride, width);
}
for(y=0; y<height; y++){
for(x=0; x<width; x++){
buffer[y*stride + x] /= SCALEX;
}
}
}
static void horizontal_decompose53i(int *b, int width){
int temp[width];
const int width2= width>>1;
int A1,A2,A3,A4, x;
const int w2= (width+1)>>1;
for(x=0; x<width2; x++){
temp[x ]= b[2*x ];
temp[x+w2]= b[2*x + 1];
}
if(width&1)
temp[x ]= b[2*x ];
#if 0
A2= temp[1 ];
A4= temp[0 ];
A1= temp[0+width2];
A1 -= (A2 + A4)>>1;
A4 += (A1 + 1)>>1;
b[0+width2] = A1;
b[0 ] = A4;
for(x=1; x+1<width2; x+=2){
A3= temp[x+width2];
A4= temp[x+1 ];
A3 -= (A2 + A4)>>1;
A2 += (A1 + A3 + 2)>>2;
b[x+width2] = A3;
b[x ] = A2;
A1= temp[x+1+width2];
A2= temp[x+2 ];
A1 -= (A2 + A4)>>1;
A4 += (A1 + A3 + 2)>>2;
b[x+1+width2] = A1;
b[x+1 ] = A4;
}
A3= temp[width-1];
A3 -= A2;
A2 += (A1 + A3 + 2)>>2;
b[width -1] = A3;
b[width2-1] = A2;
#else
lift(b+w2, temp+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 0);
lift(b , temp , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 0);
#endif
}
static void vertical_decompose53iH0(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
b1[i] -= (b0[i] + b2[i])>>1;
}
}
static void vertical_decompose53iL0(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
b1[i] += (b0[i] + b2[i] + 2)>>2;
}
}
static void spatial_decompose53i(int *buffer, int width, int height, int stride){
int x, y;
DWTELEM *b0= buffer + mirror(-2-1, height-1)*stride;
DWTELEM *b1= buffer + mirror(-2 , height-1)*stride;
for(y=-2; y<height; y+=2){
DWTELEM *b2= buffer + mirror(y+1, height-1)*stride;
DWTELEM *b3= buffer + mirror(y+2, height-1)*stride;
{START_TIMER
if(b1 <= b3) horizontal_decompose53i(b2, width);
if(y+2 < height) horizontal_decompose53i(b3, width);
STOP_TIMER("horizontal_decompose53i")}
{START_TIMER
if(b1 <= b3) vertical_decompose53iH0(b1, b2, b3, width);
if(b0 <= b2) vertical_decompose53iL0(b0, b1, b2, width);
STOP_TIMER("vertical_decompose53i*")}
b0=b2;
b1=b3;
}
}
#define lift5 lift
#if 1
#define W_AM 3
#define W_AO 0
#define W_AS 1
#define W_BM 1
#define W_BO 8
#define W_BS 4
#undef lift5
#define W_CM 9999
#define W_CO 2
#define W_CS 2
#define W_DM 15
#define W_DO 16
#define W_DS 5
#elif 0
#define W_AM 55
#define W_AO 16
#define W_AS 5
#define W_BM 3
#define W_BO 32
#define W_BS 6
#define W_CM 127
#define W_CO 64
#define W_CS 7
#define W_DM 7
#define W_DO 8
#define W_DS 4
#elif 0
#define W_AM 97
#define W_AO 32
#define W_AS 6
#define W_BM 63
#define W_BO 512
#define W_BS 10
#define W_CM 13
#define W_CO 8
#define W_CS 4
#define W_DM 15
#define W_DO 16
#define W_DS 5
#else
#define W_AM 203
#define W_AO 64
#define W_AS 7
#define W_BM 217
#define W_BO 2048
#define W_BS 12
#define W_CM 113
#define W_CO 64
#define W_CS 7
#define W_DM 227
#define W_DO 128
#define W_DS 9
#endif
static void horizontal_decompose97i(int *b, int width){
int temp[width];
const int w2= (width+1)>>1;
lift (temp+w2, b +1, b , 1, 2, 2, width, -W_AM, W_AO, W_AS, 1, 0);
lift (temp , b , temp+w2, 1, 2, 1, width, -W_BM, W_BO, W_BS, 0, 0);
lift5(b +w2, temp+w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 0);
lift (b , temp , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 0);
}
static void vertical_decompose97iH0(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
b1[i] -= (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
}
}
static void vertical_decompose97iH1(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
#ifdef lift5
b1[i] += (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS;
#else
int r= 3*(b0[i] + b2[i]);
r+= r>>4;
r+= r>>8;
b1[i] += (r+W_CO)>>W_CS;
#endif
}
}
static void vertical_decompose97iL0(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
b1[i] -= (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS;
}
}
static void vertical_decompose97iL1(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
b1[i] += (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS;
}
}
static void spatial_decompose97i(int *buffer, int width, int height, int stride){
int x, y;
DWTELEM *b0= buffer + mirror(-4-1, height-1)*stride;
DWTELEM *b1= buffer + mirror(-4 , height-1)*stride;
DWTELEM *b2= buffer + mirror(-4+1, height-1)*stride;
DWTELEM *b3= buffer + mirror(-4+2, height-1)*stride;
for(y=-4; y<height; y+=2){
DWTELEM *b4= buffer + mirror(y+3, height-1)*stride;
DWTELEM *b5= buffer + mirror(y+4, height-1)*stride;
{START_TIMER
if(b3 <= b5) horizontal_decompose97i(b4, width);
if(y+4 < height) horizontal_decompose97i(b5, width);
if(width>400){
STOP_TIMER("horizontal_decompose97i")
}}
{START_TIMER
if(b3 <= b5) vertical_decompose97iH0(b3, b4, b5, width);
if(b2 <= b4) vertical_decompose97iL0(b2, b3, b4, width);
if(b1 <= b3) vertical_decompose97iH1(b1, b2, b3, width);
if(b0 <= b2) vertical_decompose97iL1(b0, b1, b2, width);
if(width>400){
STOP_TIMER("vertical_decompose97i")
}}
b0=b2;
b1=b3;
b2=b4;
b3=b5;
}
}
static void spatial_dwt(SnowContext *s, int *buffer, int width, int height, int stride){
int level;
for(level=0; level<s->spatial_decomposition_count; level++){
switch(s->spatial_decomposition_type){
case 0: spatial_decompose97i(buffer, width>>level, height>>level, stride<<level); break;
case 1: spatial_decompose53i(buffer, width>>level, height>>level, stride<<level); break;
case 2: spatial_decomposeX (buffer, width>>level, height>>level, stride<<level); break;
}
}
}
static void horizontal_compose53i(int *b, int width){
int temp[width];
const int width2= width>>1;
const int w2= (width+1)>>1;
int A1,A2,A3,A4, x;
#if 0
A2= temp[1 ];
A4= temp[0 ];
A1= temp[0+width2];
A1 -= (A2 + A4)>>1;
A4 += (A1 + 1)>>1;
b[0+width2] = A1;
b[0 ] = A4;
for(x=1; x+1<width2; x+=2){
A3= temp[x+width2];
A4= temp[x+1 ];
A3 -= (A2 + A4)>>1;
A2 += (A1 + A3 + 2)>>2;
b[x+width2] = A3;
b[x ] = A2;
A1= temp[x+1+width2];
A2= temp[x+2 ];
A1 -= (A2 + A4)>>1;
A4 += (A1 + A3 + 2)>>2;
b[x+1+width2] = A1;
b[x+1 ] = A4;
}
A3= temp[width-1];
A3 -= A2;
A2 += (A1 + A3 + 2)>>2;
b[width -1] = A3;
b[width2-1] = A2;
#else
lift(temp , b , b+w2, 1, 1, 1, width, 1, 2, 2, 0, 1);
lift(temp+w2, b+w2, temp, 1, 1, 1, width, -1, 0, 1, 1, 1);
#endif
for(x=0; x<width2; x++){
b[2*x ]= temp[x ];
b[2*x + 1]= temp[x+w2];
}
if(width&1)
b[2*x ]= temp[x ];
}
static void vertical_compose53iH0(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
b1[i] += (b0[i] + b2[i])>>1;
}
}
static void vertical_compose53iL0(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
b1[i] -= (b0[i] + b2[i] + 2)>>2;
}
}
static void spatial_compose53i(int *buffer, int width, int height, int stride){
int x, y;
DWTELEM *b0= buffer + mirror(-1-1, height-1)*stride;
DWTELEM *b1= buffer + mirror(-1 , height-1)*stride;
for(y=-1; y<=height; y+=2){
DWTELEM *b2= buffer + mirror(y+1, height-1)*stride;
DWTELEM *b3= buffer + mirror(y+2, height-1)*stride;
{START_TIMER
if(b1 <= b3) vertical_compose53iL0(b1, b2, b3, width);
if(b0 <= b2) vertical_compose53iH0(b0, b1, b2, width);
STOP_TIMER("vertical_compose53i*")}
{START_TIMER
if(y-1 >= 0) horizontal_compose53i(b0, width);
if(b0 <= b2) horizontal_compose53i(b1, width);
STOP_TIMER("horizontal_compose53i")}
b0=b2;
b1=b3;
}
}
static void horizontal_compose97i(int *b, int width){
int temp[width];
const int w2= (width+1)>>1;
lift (temp , b , b +w2, 1, 1, 1, width, W_DM, W_DO, W_DS, 0, 1);
lift5(temp+w2, b +w2, temp , 1, 1, 1, width, W_CM, W_CO, W_CS, 1, 1);
lift (b , temp , temp+w2, 2, 1, 1, width, -W_BM, W_BO, W_BS, 0, 1);
lift (b+1 , temp+w2, b , 2, 1, 2, width, -W_AM, W_AO, W_AS, 1, 1);
}
static void vertical_compose97iH0(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
b1[i] += (W_AM*(b0[i] + b2[i])+W_AO)>>W_AS;
}
}
static void vertical_compose97iH1(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
#ifdef lift5
b1[i] -= (W_CM*(b0[i] + b2[i])+W_CO)>>W_CS;
#else
int r= 3*(b0[i] + b2[i]);
r+= r>>4;
r+= r>>8;
b1[i] -= (r+W_CO)>>W_CS;
#endif
}
}
static void vertical_compose97iL0(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
b1[i] += (W_BM*(b0[i] + b2[i])+W_BO)>>W_BS;
}
}
static void vertical_compose97iL1(int *b0, int *b1, int *b2, int width){
int i;
for(i=0; i<width; i++){
b1[i] -= (W_DM*(b0[i] + b2[i])+W_DO)>>W_DS;
}
}
static void spatial_compose97i(int *buffer, int width, int height, int stride){
int x, y;
DWTELEM *b0= buffer + mirror(-3-1, height-1)*stride;
DWTELEM *b1= buffer + mirror(-3 , height-1)*stride;
DWTELEM *b2= buffer + mirror(-3+1, height-1)*stride;
DWTELEM *b3= buffer + mirror(-3+2, height-1)*stride;
for(y=-3; y<=height; y+=2){
DWTELEM *b4= buffer + mirror(y+3, height-1)*stride;
DWTELEM *b5= buffer + mirror(y+4, height-1)*stride;
if(stride == width && y+4 < height && 0){
int x;
for(x=0; x<width/2; x++)
b5[x] += 64*2;
for(; x<width; x++)
b5[x] += 169*2;
}
{START_TIMER
if(b3 <= b5) vertical_compose97iL1(b3, b4, b5, width);
if(b2 <= b4) vertical_compose97iH1(b2, b3, b4, width);
if(b1 <= b3) vertical_compose97iL0(b1, b2, b3, width);
if(b0 <= b2) vertical_compose97iH0(b0, b1, b2, width);
if(width>400){
STOP_TIMER("vertical_compose97i")}}
{START_TIMER
if(y-1>= 0) horizontal_compose97i(b0, width);
if(b0 <= b2) horizontal_compose97i(b1, width);
if(width>400 && b0 <= b2){
STOP_TIMER("horizontal_compose97i")}}
b0=b2;
b1=b3;
b2=b4;
b3=b5;
}
}
static void spatial_idwt(SnowContext *s, int *buffer, int width, int height, int stride){
int level;
for(level=s->spatial_decomposition_count-1; level>=0; level--){
switch(s->spatial_decomposition_type){
case 0: spatial_compose97i(buffer, width>>level, height>>level, stride<<level); break;
case 1: spatial_compose53i(buffer, width>>level, height>>level, stride<<level); break;
case 2: spatial_composeX (buffer, width>>level, height>>level, stride<<level); break;
}
}
}
static const int hilbert[16][2]={
{0,0}, {1,0}, {1,1}, {0,1},
{0,2}, {0,3}, {1,3}, {1,2},
{2,2}, {2,3}, {3,3}, {3,2},
{3,1}, {2,1}, {2,0}, {3,0},
};
#if 0
-o o-
| |
o-o
-o-o o-o-
| |
o-o o-o
| |
o o-o o
| | | |
o-o o-o
0112122312232334122323342334
0123456789ABCDEF0123456789AB
RLLRMRRLLRRMRLLMLRRLMLLRRLLM
4 B F 14 1B
4 11 15 20 27
-o o-o-o o-o-o o-
| | | | | |
o-o o-o o-o o-o
| |
o-o o-o o-o o-o
| | | | | |
o o-o-o o-o-o o
| |
o-o o-o-o-o o-o
| | | |
o-o o-o o-o o-o
| | | |
o o-o o o o-o o
| | | | | | | |
o-o o-o o-o o-o
#endif
#define SVI(a, i, x, y) \
{\
a[i][0]= x;\
a[i][1]= y;\
i++;\
}
static int sig_cmp(const void *a, const void *b){
const int16_t* da = (const int16_t *) a;
const int16_t* db = (const int16_t *) b;
if(da[1] != db[1]) return da[1] - db[1];
else return da[0] - db[0];
}
static void encode_subband(SnowContext *s, SubBand *b, DWTELEM *src, DWTELEM *parent, int stride, int orientation){
const int level= b->level;
const int w= b->width;
const int h= b->height;
int x, y;
#if 0
if(orientation==3 && parent && 0){
int16_t candidate[w*h][2];
uint8_t state[w*h];
int16_t boarder[3][w*h*4][2];
int16_t significant[w*h][2];
int candidate_count=0;
int boarder_count[3]={0,0,0};
int significant_count=0;
int rle_pos=0;
int v, last_v;
int primary= orientation==1;
memset(candidate, 0, sizeof(candidate));
memset(state, 0, sizeof(state));
memset(boarder, 0, sizeof(boarder));
for(y=0; y<h; y++){
for(x=0; x<w; x++){
if(parent[(x>>1) + (y>>1)*2*stride])
SVI(candidate, candidate_count, x, y)
}
}
for(;;){
while(candidate_count && !boarder_count[0] && !boarder_count[1] && !boarder_count[2]){
candidate_count--;
x= candidate[ candidate_count][0];
y= candidate[ candidate_count][1];
if(state[x + y*w])
continue;
state[x + y*w]= 1;
v= !!src[x + y*stride];
put_cabac(&s->c, &b->state[0][0], v);
if(v){
SVI(significant, significant_count, x,y)
if(x && !state[x - 1 + y *w]) SVI(boarder[0],boarder_count[0],x-1,y )
if(y && !state[x + (y-1)*w]) SVI(boarder[1],boarder_count[1],x ,y-1)
if(x+1<w && !state[x + 1 + y *w]) SVI(boarder[0],boarder_count[0],x+1,y )
if(y+1<h && !state[x + (y+1)*w]) SVI(boarder[1],boarder_count[1],x ,y+1)
if(x && y && !state[x - 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x-1,y-1)
if(x && y+1<h && !state[x - 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x-1,y+1)
if(x+1<w && y+1<h && !state[x + 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x+1,y+1)
if(x+1<w && y && !state[x + 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x+1,y-1)
}
}
while(!boarder_count[0] && !boarder_count[1] && !boarder_count[2] && rle_pos < w*h){
int run=0;
for(; rle_pos < w*h;){
x= rle_pos % w; //FIXME speed
y= rle_pos / w;
rle_pos++;
if(state[x + y*w])
continue;
state[x + y*w]= 1;
v= !!src[x + y*stride];
if(v){
put_symbol(&s->c, b->state[1], run, 0);
SVI(significant, significant_count, x,y)
if(x && !state[x - 1 + y *w]) SVI(boarder[0],boarder_count[0],x-1,y )
if(y && !state[x + (y-1)*w]) SVI(boarder[1],boarder_count[1],x ,y-1)
if(x+1<w && !state[x + 1 + y *w]) SVI(boarder[0],boarder_count[0],x+1,y )
if(y+1<h && !state[x + (y+1)*w]) SVI(boarder[1],boarder_count[1],x ,y+1)
if(x && y && !state[x - 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x-1,y-1)
if(x && y+1<h && !state[x - 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x-1,y+1)
if(x+1<w && y+1<h && !state[x + 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x+1,y+1)
if(x+1<w && y && !state[x + 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x+1,y-1)
break;
//FIXME note only right & down can be boarders
}
run++;
}
}
if(!boarder_count[0] && !boarder_count[1] && !boarder_count[2])
break;
while(boarder_count[0] || boarder_count[1] || boarder_count[2]){
int index;
if (boarder_count[ primary]) index= primary;
else if(boarder_count[1-primary]) index=1-primary;
else index=2;
boarder_count[index]--;
x= boarder[index][ boarder_count[index] ][0];
y= boarder[index][ boarder_count[index] ][1];
if(state[x + y*w]) //FIXME maybe check earlier
continue;
state[x + y*w]= 1;
v= !!src[x + y*stride];
put_cabac(&s->c, &b->state[0][index+1], v);
if(v){
SVI(significant, significant_count, x,y)
if(x && !state[x - 1 + y *w]) SVI(boarder[0],boarder_count[0],x-1,y )
if(y && !state[x + (y-1)*w]) SVI(boarder[1],boarder_count[1],x ,y-1)
if(x+1<w && !state[x + 1 + y *w]) SVI(boarder[0],boarder_count[0],x+1,y )
if(y+1<h && !state[x + (y+1)*w]) SVI(boarder[1],boarder_count[1],x ,y+1)
if(x && y && !state[x - 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x-1,y-1)
if(x && y+1<h && !state[x - 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x-1,y+1)
if(x+1<w && y+1<h && !state[x + 1 + (y+1)*w]) SVI(boarder[2],boarder_count[2],x+1,y+1)
if(x+1<w && y && !state[x + 1 + (y-1)*w]) SVI(boarder[2],boarder_count[2],x+1,y-1)
}
}
}
//FIXME sort significant coeffs maybe
if(1){
qsort(significant, significant_count, sizeof(int16_t[2]), sig_cmp);
}
last_v=1;
while(significant_count){
int context= 3 + quant7[last_v&0xFF]; //use significance of suroundings
significant_count--;
x= significant[significant_count][0];//FIXME try opposit direction
y= significant[significant_count][1];
v= src[x + y*stride];
put_symbol(&s->c, b->state[context + 2], v, 1); //FIXME try to avoid first bit, try this with the old code too!!
last_v= v;
}
}
#endif
if(1){
int run=0;
int runs[w*h];
int run_index=0;
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int v, p=0;
int /*ll=0, */l=0, lt=0, t=0, rt=0;
v= src[x + y*stride];
if(y){
t= src[x + (y-1)*stride];
if(x){
lt= src[x - 1 + (y-1)*stride];
}
if(x + 1 < w){
rt= src[x + 1 + (y-1)*stride];
}
}
if(x){
l= src[x - 1 + y*stride];
/*if(x > 1){
if(orientation==1) ll= src[y + (x-2)*stride];
else ll= src[x - 2 + y*stride];
}*/
}
if(parent){
int px= x>>1;
int py= y>>1;
if(px<b->parent->width && py<b->parent->height)
p= parent[px + py*2*stride];
}
if(!(/*ll|*/l|lt|t|rt|p)){
if(v){
runs[run_index++]= run;
run=0;
}else{
run++;
}
}
}
}
runs[run_index++]= run;
run_index=0;
run= runs[run_index++];
put_symbol(&s->c, b->state[1], run, 0);
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int v, p=0;
int /*ll=0, */l=0, lt=0, t=0, rt=0;
v= src[x + y*stride];
if(y){
t= src[x + (y-1)*stride];
if(x){
lt= src[x - 1 + (y-1)*stride];
}
if(x + 1 < w){
rt= src[x + 1 + (y-1)*stride];
}
}
if(x){
l= src[x - 1 + y*stride];
/*if(x > 1){
if(orientation==1) ll= src[y + (x-2)*stride];
else ll= src[x - 2 + y*stride];
}*/
}
if(parent){
int px= x>>1;
int py= y>>1;
if(px<b->parent->width && py<b->parent->height)
p= parent[px + py*2*stride];
}
if(/*ll|*/l|lt|t|rt|p){
int context= av_log2(/*ABS(ll) + */3*ABS(l) + ABS(lt) + 2*ABS(t) + ABS(rt) + ABS(p));
put_cabac(&s->c, &b->state[0][context], !!v);
}else{
if(!run){
run= runs[run_index++];
put_symbol(&s->c, b->state[1], run, 0);
assert(v);
}else{
run--;
assert(!v);
}
}
if(v){
int context= av_log2(/*ABS(ll) + */3*ABS(l) + ABS(lt) + 2*ABS(t) + ABS(rt) + ABS(p));
put_symbol(&s->c, b->state[context + 2], ABS(v)-1, 0);
put_cabac(&s->c, &b->state[0][16 + 1 + 3 + quant3b[l&0xFF] + 3*quant3b[t&0xFF]], v<0);
}
}
}
return;
}
}
static inline void decode_subband(SnowContext *s, SubBand *b, DWTELEM *src, DWTELEM *parent, int stride, int orientation){
const int level= b->level;
const int w= b->width;
const int h= b->height;
int x,y;
START_TIMER
if(1){
int run;
for(y=0; y<b->height; y++)
memset(&src[y*stride], 0, b->width*sizeof(DWTELEM));
run= get_symbol(&s->c, b->state[1], 0);
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int v, p=0;
int /*ll=0, */l=0, lt=0, t=0, rt=0;
if(y){
t= src[x + (y-1)*stride];
if(x){
lt= src[x - 1 + (y-1)*stride];
}
if(x + 1 < w){
rt= src[x + 1 + (y-1)*stride];
}
}
if(x){
l= src[x - 1 + y*stride];
/*if(x > 1){
if(orientation==1) ll= src[y + (x-2)*stride];
else ll= src[x - 2 + y*stride];
}*/
}
if(parent){
int px= x>>1;
int py= y>>1;
if(px<b->parent->width && py<b->parent->height)
p= parent[px + py*2*stride];
}
if(/*ll|*/l|lt|t|rt|p){
int context= av_log2(/*ABS(ll) + */3*ABS(l) + ABS(lt) + 2*ABS(t) + ABS(rt) + ABS(p));
v=get_cabac(&s->c, &b->state[0][context]);
}else{
if(!run){
run= get_symbol(&s->c, b->state[1], 0);
//FIXME optimize this here
//FIXME try to store a more naive run
v=1;
}else{
run--;
v=0;
}
}
if(v){
int context= av_log2(/*ABS(ll) + */3*ABS(l) + ABS(lt) + 2*ABS(t) + ABS(rt) + ABS(p));
v= get_symbol(&s->c, b->state[context + 2], 0) + 1;
if(get_cabac(&s->c, &b->state[0][16 + 1 + 3 + quant3b[l&0xFF] + 3*quant3b[t&0xFF]]))
v= -v;
src[x + y*stride]= v;
}
}
}
if(level+1 == s->spatial_decomposition_count){
STOP_TIMER("decode_subband")
}
return;
}
}
static void reset_contexts(SnowContext *s){
int plane_index, level, orientation;
for(plane_index=0; plane_index<2; plane_index++){
for(level=0; level<s->spatial_decomposition_count; level++){
for(orientation=level ? 1:0; orientation<4; orientation++){
memset(s->plane[plane_index].band[level][orientation].state, 0, sizeof(s->plane[plane_index].band[level][orientation].state));
}
}
}
memset(s->mb_band.state, 0, sizeof(s->mb_band.state));
memset(s->mv_band[0].state, 0, sizeof(s->mv_band[0].state));
memset(s->mv_band[1].state, 0, sizeof(s->mv_band[1].state));
memset(s->header_state, 0, sizeof(s->header_state));
}
static void mc_block(uint8_t *dst, uint8_t *src, uint8_t *tmp, int stride, int b_w, int b_h, int dx, int dy){
int x, y;
for(y=0; y < b_h+5; y++){
for(x=0; x < b_w; x++){
int a0= src[x + y*stride];
int a1= src[x + 1 + y*stride];
int a2= src[x + 2 + y*stride];
int a3= src[x + 3 + y*stride];
int a4= src[x + 4 + y*stride];
int a5= src[x + 5 + y*stride];
// int am= 9*(a1+a2) - (a0+a3);
int am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5);
// int am= 18*(a2+a3) - 2*(a1+a4);
// int aL= (-7*a0 + 105*a1 + 35*a2 - 5*a3)>>3;
// int aR= (-7*a3 + 105*a2 + 35*a1 - 5*a0)>>3;
// if(b_w==16) am= 8*(a1+a2);
if(dx<8) tmp[x + y*stride]= (32*a2*( 8-dx) + am* dx + 128)>>8;
else tmp[x + y*stride]= ( am*(16-dx) + 32*a3*(dx-8) + 128)>>8;
/* if (dx< 4) tmp[x + y*stride]= (16*a1*( 4-dx) + aL* dx + 32)>>6;
else if(dx< 8) tmp[x + y*stride]= ( aL*( 8-dx) + am*(dx- 4) + 32)>>6;
else if(dx<12) tmp[x + y*stride]= ( am*(12-dx) + aR*(dx- 8) + 32)>>6;
else tmp[x + y*stride]= ( aR*(16-dx) + 16*a2*(dx-12) + 32)>>6;*/
}
}
for(y=0; y < b_h; y++){
for(x=0; x < b_w; x++){
int a0= tmp[x + y *stride];
int a1= tmp[x + (y + 1)*stride];
int a2= tmp[x + (y + 2)*stride];
int a3= tmp[x + (y + 3)*stride];
int a4= tmp[x + (y + 4)*stride];
int a5= tmp[x + (y + 5)*stride];
int am= 20*(a2+a3) - 5*(a1+a4) + (a0+a5);
// int am= 18*(a2+a3) - 2*(a1+a4);
/* int aL= (-7*a0 + 105*a1 + 35*a2 - 5*a3)>>3;
int aR= (-7*a3 + 105*a2 + 35*a1 - 5*a0)>>3;*/
// if(b_w==16) am= 8*(a1+a2);
if(dy<8) dst[x + y*stride]= (32*a2*( 8-dy) + am* dy + 128)>>8;
else dst[x + y*stride]= ( am*(16-dy) + 32*a3*(dy-8) + 128)>>8;
/* if (dy< 4) tmp[x + y*stride]= (16*a1*( 4-dy) + aL* dy + 32)>>6;
else if(dy< 8) tmp[x + y*stride]= ( aL*( 8-dy) + am*(dy- 4) + 32)>>6;
else if(dy<12) tmp[x + y*stride]= ( am*(12-dy) + aR*(dy- 8) + 32)>>6;
else tmp[x + y*stride]= ( aR*(16-dy) + 16*a2*(dy-12) + 32)>>6;*/
}
}
}
#define mcb(dx,dy,b_w)\
static void mc_block ## dx ## dy(uint8_t *dst, uint8_t *src, int stride){\
uint8_t tmp[stride*(b_w+5)];\
mc_block(dst, src-2-2*stride, tmp, stride, b_w, b_w, dx, dy);\
}
mcb( 0, 0,16)
mcb( 4, 0,16)
mcb( 8, 0,16)
mcb(12, 0,16)
mcb( 0, 4,16)
mcb( 4, 4,16)
mcb( 8, 4,16)
mcb(12, 4,16)
mcb( 0, 8,16)
mcb( 4, 8,16)
mcb( 8, 8,16)
mcb(12, 8,16)
mcb( 0,12,16)
mcb( 4,12,16)
mcb( 8,12,16)
mcb(12,12,16)
#define mca(dx,dy,b_w)\
static void mc_block_hpel ## dx ## dy(uint8_t *dst, uint8_t *src, int stride, int h){\
uint8_t tmp[stride*(b_w+5)];\
assert(h==b_w);\
mc_block(dst, src-2-2*stride, tmp, stride, b_w, b_w, dx, dy);\
}
mca( 0, 0,16)
mca( 8, 0,16)
mca( 0, 8,16)
mca( 8, 8,16)
static void add_xblock(DWTELEM *dst, uint8_t *src, uint8_t *obmc, int s_x, int s_y, int b_w, int b_h, int mv_x, int mv_y, int w, int h, int dst_stride, int src_stride, int obmc_stride, int mb_type, int add){
uint8_t tmp[src_stride*(b_h+5)]; //FIXME move to context to gurantee alignment
int x,y;
if(s_x<0){
obmc -= s_x;
b_w += s_x;
s_x=0;
}else if(s_x + b_w > w){
b_w = w - s_x;
}
if(s_y<0){
obmc -= s_y*obmc_stride;
b_h += s_y;
s_y=0;
}else if(s_y + b_h> h){
b_h = h - s_y;
}
dst += s_x + s_y*dst_stride;
if(mb_type==1){
src += s_x + s_y*src_stride;
for(y=0; y < b_h; y++){
for(x=0; x < b_w; x++){
if(add) dst[x + y*dst_stride] += obmc[x + y*obmc_stride] * 128 * (256/OBMC_MAX);
else dst[x + y*dst_stride] -= obmc[x + y*obmc_stride] * 128 * (256/OBMC_MAX);
}
}
}else{
int dx= mv_x&15;
int dy= mv_y&15;
// int dxy= (mv_x&1) + 2*(mv_y&1);
s_x += (mv_x>>4) - 2;
s_y += (mv_y>>4) - 2;
src += s_x + s_y*src_stride;
//use dsputil
if( (unsigned)s_x >= w - b_w - 4
|| (unsigned)s_y >= h - b_h - 4){
ff_emulated_edge_mc(tmp + 32, src, src_stride, b_w+5, b_h+5, s_x, s_y, w, h);
src= tmp + 32;
}
if(mb_type==0){
mc_block(tmp, src, tmp + 64+8, src_stride, b_w, b_h, dx, dy);
}else{
int sum=0;
for(y=0; y < b_h; y++){
for(x=0; x < b_w; x++){
sum += src[x+ y*src_stride];
}
}
sum= (sum + b_h*b_w/2) / (b_h*b_w);
for(y=0; y < b_h; y++){
for(x=0; x < b_w; x++){
tmp[x + y*src_stride]= sum;
}
}
}
for(y=0; y < b_h; y++){
for(x=0; x < b_w; x++){
if(add) dst[x + y*dst_stride] += obmc[x + y*obmc_stride] * tmp[x + y*src_stride] * (256/OBMC_MAX);
else dst[x + y*dst_stride] -= obmc[x + y*obmc_stride] * tmp[x + y*src_stride] * (256/OBMC_MAX);
}
}
}
}
static void predict_plane(SnowContext *s, DWTELEM *buf, int plane_index, int add){
Plane *p= &s->plane[plane_index];
const int mb_w= s->mb_band.width;
const int mb_h= s->mb_band.height;
const int mb_stride= s->mb_band.stride;
int x, y, mb_x, mb_y;
int scale = plane_index ? s->mv_scale : 2*s->mv_scale;
int block_w = plane_index ? 8 : 16;
uint8_t *obmc = plane_index ? obmc16 : obmc32;
int obmc_stride= plane_index ? 16 : 32;
int ref_stride= s->last_picture.linesize[plane_index];
uint8_t *ref = s->last_picture.data[plane_index];
int w= p->width;
int h= p->height;
if(s->avctx->debug&512){
for(y=0; y<h; y++){
for(x=0; x<w; x++){
if(add) buf[x + y*w]+= 128*256;
else buf[x + y*w]-= 128*256;
}
}
return;
}
for(mb_y=-1; mb_y<=mb_h; mb_y++){
for(mb_x=-1; mb_x<=mb_w; mb_x++){
int index= clip(mb_x, 0, mb_w-1) + clip(mb_y, 0, mb_h-1)*mb_stride;
add_xblock(buf, ref, obmc,
block_w*mb_x - block_w/2,
block_w*mb_y - block_w/2,
2*block_w, 2*block_w,
s->mv_band[0].buf[index]*scale, s->mv_band[1].buf[index]*scale,
w, h,
w, ref_stride, obmc_stride,
s->mb_band.buf[index], add);
}
}
}
static void quantize(SnowContext *s, SubBand *b, DWTELEM *src, int stride, int bias){
const int level= b->level;
const int w= b->width;
const int h= b->height;
const int qlog= clip(s->qlog + b->qlog, 0, 128);
const int qmul= qexp[qlog&7]<<(qlog>>3);
int x,y, thres1, thres2;
START_TIMER
assert(QROOT==8);
bias= bias ? 0 : (3*qmul)>>3;
thres1= ((qmul - bias)>>QEXPSHIFT) - 1;
thres2= 2*thres1;
if(!bias){
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int i= src[x + y*stride];
if((unsigned)(i+thres1) > thres2){
if(i>=0){
i<<= QEXPSHIFT;
i/= qmul; //FIXME optimize
src[x + y*stride]= i;
}else{
i= -i;
i<<= QEXPSHIFT;
i/= qmul; //FIXME optimize
src[x + y*stride]= -i;
}
}else
src[x + y*stride]= 0;
}
}
}else{
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int i= src[x + y*stride];
if((unsigned)(i+thres1) > thres2){
if(i>=0){
i<<= QEXPSHIFT;
i= (i + bias) / qmul; //FIXME optimize
src[x + y*stride]= i;
}else{
i= -i;
i<<= QEXPSHIFT;
i= (i + bias) / qmul; //FIXME optimize
src[x + y*stride]= -i;
}
}else
src[x + y*stride]= 0;
}
}
}
if(level+1 == s->spatial_decomposition_count){
// STOP_TIMER("quantize")
}
}
static void dequantize(SnowContext *s, SubBand *b, DWTELEM *src, int stride){
const int level= b->level;
const int w= b->width;
const int h= b->height;
const int qlog= clip(s->qlog + b->qlog, 0, 128);
const int qmul= qexp[qlog&7]<<(qlog>>3);
const int qadd= (s->qbias*qmul)>>QBIAS_SHIFT;
int x,y;
assert(QROOT==8);
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int i= src[x + y*stride];
if(i<0){
src[x + y*stride]= -((-i*qmul + qadd)>>(QEXPSHIFT)); //FIXME try different bias
}else if(i>0){
src[x + y*stride]= (( i*qmul + qadd)>>(QEXPSHIFT));
}
}
}
}
static void decorrelate(SnowContext *s, SubBand *b, DWTELEM *src, int stride, int inverse, int use_median){
const int w= b->width;
const int h= b->height;
int x,y;
for(y=h-1; y>=0; y--){
for(x=w-1; x>=0; x--){
int i= x + y*stride;
if(x){
if(use_median){
if(y && x+1<w) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
else src[i] -= src[i - 1];
}else{
if(y) src[i] -= mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
else src[i] -= src[i - 1];
}
}else{
if(y) src[i] -= src[i - stride];
}
}
}
}
static void correlate(SnowContext *s, SubBand *b, DWTELEM *src, int stride, int inverse, int use_median){
const int w= b->width;
const int h= b->height;
int x,y;
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int i= x + y*stride;
if(x){
if(use_median){
if(y && x+1<w) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - stride + 1]);
else src[i] += src[i - 1];
}else{
if(y) src[i] += mid_pred(src[i - 1], src[i - stride], src[i - 1] + src[i - stride] - src[i - 1 - stride]);
else src[i] += src[i - 1];
}
}else{
if(y) src[i] += src[i - stride];
}
}
}
}
static void encode_header(SnowContext *s){
int plane_index, level, orientation;
put_cabac(&s->c, s->header_state, s->keyframe); // state clearing stuff?
if(s->keyframe){
put_symbol(&s->c, s->header_state, s->version, 0);
put_symbol(&s->c, s->header_state, s->temporal_decomposition_type, 0);
put_symbol(&s->c, s->header_state, s->temporal_decomposition_count, 0);
put_symbol(&s->c, s->header_state, s->spatial_decomposition_count, 0);
put_symbol(&s->c, s->header_state, s->colorspace_type, 0);
put_symbol(&s->c, s->header_state, s->b_width, 0);
put_symbol(&s->c, s->header_state, s->b_height, 0);
put_symbol(&s->c, s->header_state, s->chroma_h_shift, 0);
put_symbol(&s->c, s->header_state, s->chroma_v_shift, 0);
put_cabac(&s->c, s->header_state, s->spatial_scalability);
// put_cabac(&s->c, s->header_state, s->rate_scalability);
for(plane_index=0; plane_index<2; plane_index++){
for(level=0; level<s->spatial_decomposition_count; level++){
for(orientation=level ? 1:0; orientation<4; orientation++){
if(orientation==2) continue;
put_symbol(&s->c, s->header_state, s->plane[plane_index].band[level][orientation].qlog, 1);
}
}
}
}
put_symbol(&s->c, s->header_state, s->spatial_decomposition_type, 0);
put_symbol(&s->c, s->header_state, s->qlog, 1);
put_symbol(&s->c, s->header_state, s->mv_scale, 0);
put_symbol(&s->c, s->header_state, s->qbias, 1);
}
static int decode_header(SnowContext *s){
int plane_index, level, orientation;
s->keyframe= get_cabac(&s->c, s->header_state);
if(s->keyframe){
s->version= get_symbol(&s->c, s->header_state, 0);
if(s->version>0){
av_log(s->avctx, AV_LOG_ERROR, "version %d not supported", s->version);
return -1;
}
s->temporal_decomposition_type= get_symbol(&s->c, s->header_state, 0);
s->temporal_decomposition_count= get_symbol(&s->c, s->header_state, 0);
s->spatial_decomposition_count= get_symbol(&s->c, s->header_state, 0);
s->colorspace_type= get_symbol(&s->c, s->header_state, 0);
s->b_width= get_symbol(&s->c, s->header_state, 0);
s->b_height= get_symbol(&s->c, s->header_state, 0);
s->chroma_h_shift= get_symbol(&s->c, s->header_state, 0);
s->chroma_v_shift= get_symbol(&s->c, s->header_state, 0);
s->spatial_scalability= get_cabac(&s->c, s->header_state);
// s->rate_scalability= get_cabac(&s->c, s->header_state);
for(plane_index=0; plane_index<3; plane_index++){
for(level=0; level<s->spatial_decomposition_count; level++){
for(orientation=level ? 1:0; orientation<4; orientation++){
int q;
if (plane_index==2) q= s->plane[1].band[level][orientation].qlog;
else if(orientation==2) q= s->plane[plane_index].band[level][1].qlog;
else q= get_symbol(&s->c, s->header_state, 1);
s->plane[plane_index].band[level][orientation].qlog= q;
}
}
}
}
s->spatial_decomposition_type= get_symbol(&s->c, s->header_state, 0);
if(s->spatial_decomposition_type > 2){
av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_type %d not supported", s->spatial_decomposition_type);
return -1;
}
s->qlog= get_symbol(&s->c, s->header_state, 1);
s->mv_scale= get_symbol(&s->c, s->header_state, 0);
s->qbias= get_symbol(&s->c, s->header_state, 1);
return 0;
}
static int common_init(AVCodecContext *avctx){
SnowContext *s = avctx->priv_data;
int width, height;
int level, orientation, plane_index, dec;
s->avctx= avctx;
dsputil_init(&s->dsp, avctx);
#define mcf(dx,dy)\
s->dsp.put_qpel_pixels_tab [0][dy+dx/4]=\
s->dsp.put_no_rnd_qpel_pixels_tab[0][dy+dx/4]=\
mc_block ## dx ## dy;
mcf( 0, 0)
mcf( 4, 0)
mcf( 8, 0)
mcf(12, 0)
mcf( 0, 4)
mcf( 4, 4)
mcf( 8, 4)
mcf(12, 4)
mcf( 0, 8)
mcf( 4, 8)
mcf( 8, 8)
mcf(12, 8)
mcf( 0,12)
mcf( 4,12)
mcf( 8,12)
mcf(12,12)
#define mcfh(dx,dy)\
s->dsp.put_pixels_tab [0][dy/4+dx/8]=\
s->dsp.put_no_rnd_pixels_tab[0][dy/4+dx/8]=\
mc_block_hpel ## dx ## dy;
mcfh(0, 0)
mcfh(8, 0)
mcfh(0, 8)
mcfh(8, 8)
dec= s->spatial_decomposition_count= 5;
s->spatial_decomposition_type= avctx->prediction_method; //FIXME add decorrelator type r transform_type
s->chroma_h_shift= 1; //FIXME XXX
s->chroma_v_shift= 1;
// dec += FFMAX(s->chroma_h_shift, s->chroma_v_shift);
s->b_width = (s->avctx->width +(1<<dec)-1)>>dec;
s->b_height= (s->avctx->height+(1<<dec)-1)>>dec;
s->spatial_dwt_buffer= av_mallocz(s->b_width*s->b_height*sizeof(DWTELEM)<<(2*dec));
s->pred_buffer= av_mallocz(s->b_width*s->b_height*sizeof(DWTELEM)<<(2*dec));
s->mv_scale= (s->avctx->flags & CODEC_FLAG_QPEL) ? 2 : 4;
for(plane_index=0; plane_index<3; plane_index++){
int w= s->avctx->width;
int h= s->avctx->height;
if(plane_index){
w>>= s->chroma_h_shift;
h>>= s->chroma_v_shift;
}
s->plane[plane_index].width = w;
s->plane[plane_index].height= h;
av_log(NULL, AV_LOG_DEBUG, "%d %d\n", w, h);
for(level=s->spatial_decomposition_count-1; level>=0; level--){
for(orientation=level ? 1 : 0; orientation<4; orientation++){
SubBand *b= &s->plane[plane_index].band[level][orientation];
b->buf= s->spatial_dwt_buffer;
b->level= level;
b->stride= s->plane[plane_index].width << (s->spatial_decomposition_count - level);
b->width = (w + !(orientation&1))>>1;
b->height= (h + !(orientation>1))>>1;
if(orientation&1) b->buf += (w+1)>>1;
if(orientation>1) b->buf += b->stride>>1;
if(level)
b->parent= &s->plane[plane_index].band[level-1][orientation];
}
w= (w+1)>>1;
h= (h+1)>>1;
}
}
//FIXME init_subband() ?
s->mb_band.stride= s->mv_band[0].stride= s->mv_band[1].stride=
s->mb_band.width = s->mv_band[0].width = s->mv_band[1].width = (s->avctx->width + 15)>>4;
s->mb_band.height= s->mv_band[0].height= s->mv_band[1].height= (s->avctx->height+ 15)>>4;
s->mb_band .buf= av_mallocz(s->mb_band .stride * s->mb_band .height*sizeof(DWTELEM));
s->mv_band[0].buf= av_mallocz(s->mv_band[0].stride * s->mv_band[0].height*sizeof(DWTELEM));
s->mv_band[1].buf= av_mallocz(s->mv_band[1].stride * s->mv_band[1].height*sizeof(DWTELEM));
reset_contexts(s);
/*
width= s->width= avctx->width;
height= s->height= avctx->height;
assert(width && height);
*/
s->avctx->get_buffer(s->avctx, &s->mconly_picture);
return 0;
}
static void calculate_vissual_weight(SnowContext *s, Plane *p){
int width = p->width;
int height= p->height;
int i, level, orientation, x, y;
for(level=0; level<s->spatial_decomposition_count; level++){
for(orientation=level ? 1 : 0; orientation<4; orientation++){
SubBand *b= &p->band[level][orientation];
DWTELEM *buf= b->buf;
int64_t error=0;
memset(s->spatial_dwt_buffer, 0, sizeof(int)*width*height);
buf[b->width/2 + b->height/2*b->stride]= 256*256;
spatial_idwt(s, s->spatial_dwt_buffer, width, height, width);
for(y=0; y<height; y++){
for(x=0; x<width; x++){
int64_t d= s->spatial_dwt_buffer[x + y*width];
error += d*d;
}
}
b->qlog= (int)(log(352256.0/sqrt(error)) / log(pow(2.0, 1.0/QROOT))+0.5);
av_log(NULL, AV_LOG_DEBUG, "%d %d %d\n", level, orientation, b->qlog/*, sqrt(error)*/);
}
}
}
static int encode_init(AVCodecContext *avctx)
{
SnowContext *s = avctx->priv_data;
int i;
int level, orientation, plane_index;
common_init(avctx);
s->version=0;
s->m.me.scratchpad= av_mallocz((avctx->width+64)*2*16*2*sizeof(uint8_t));
s->m.me.map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
s->m.me.score_map = av_mallocz(ME_MAP_SIZE*sizeof(uint32_t));
s->mb_type = av_mallocz((s->mb_band.width+1)*s->mb_band.height*sizeof(int16_t));
s->mb_mean = av_mallocz((s->mb_band.width+1)*s->mb_band.height*sizeof(int8_t ));
s->dummy = av_mallocz((s->mb_band.width+1)*s->mb_band.height*sizeof(int32_t));
h263_encode_init(&s->m); //mv_penalty
for(plane_index=0; plane_index<3; plane_index++){
calculate_vissual_weight(s, &s->plane[plane_index]);
}
avctx->coded_frame= &s->current_picture;
switch(avctx->pix_fmt){
// case PIX_FMT_YUV444P:
// case PIX_FMT_YUV422P:
case PIX_FMT_YUV420P:
case PIX_FMT_GRAY8:
// case PIX_FMT_YUV411P:
// case PIX_FMT_YUV410P:
s->colorspace_type= 0;
break;
/* case PIX_FMT_RGBA32:
s->colorspace= 1;
break;*/
default:
av_log(avctx, AV_LOG_ERROR, "format not supported\n");
return -1;
}
// avcodec_get_chroma_sub_sample(avctx->pix_fmt, &s->chroma_h_shift, &s->chroma_v_shift);
s->chroma_h_shift= 1;
s->chroma_v_shift= 1;
return 0;
}
static int frame_start(SnowContext *s){
AVFrame tmp;
if(s->keyframe)
reset_contexts(s);
tmp= s->last_picture;
s->last_picture= s->current_picture;
s->current_picture= tmp;
s->current_picture.reference= 1;
if(s->avctx->get_buffer(s->avctx, &s->current_picture) < 0){
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
return 0;
}
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
SnowContext *s = avctx->priv_data;
CABACContext * const c= &s->c;
AVFrame *pict = data;
const int width= s->avctx->width;
const int height= s->avctx->height;
int used_count= 0;
int log2_threshold, level, orientation, plane_index, i;
if(avctx->strict_std_compliance >= 0){
av_log(avctx, AV_LOG_ERROR, "this codec is under development, files encoded with it wont be decodeable with future versions!!!\n"
"use vstrict=-1 to use it anyway\n");
return -1;
}
ff_init_cabac_encoder(c, buf, buf_size);
ff_init_cabac_states(c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64);
s->input_picture = *pict;
memset(s->header_state, 0, sizeof(s->header_state));
s->keyframe=avctx->gop_size==0 || avctx->frame_number % avctx->gop_size == 0;
pict->pict_type= s->keyframe ? FF_I_TYPE : FF_P_TYPE;
s->qlog= rint(QROOT*log(pict->quality / (float)FF_QP2LAMBDA)/log(2));
//<64 >60
s->qlog += 61;
for(i=0; i<s->mb_band.stride * s->mb_band.height; i++){
s->mb_band.buf[i]= s->keyframe;
}
frame_start(s);
if(pict->pict_type == P_TYPE){
int block_width = (width +15)>>4;
int block_height= (height+15)>>4;
int stride= s->current_picture.linesize[0];
uint8_t *src_plane= s->input_picture.data[0];
int src_stride= s->input_picture.linesize[0];
int x,y;
assert(s->current_picture.data[0]);
assert(s->last_picture.data[0]);
s->m.avctx= s->avctx;
s->m.current_picture.data[0]= s->current_picture.data[0];
s->m. last_picture.data[0]= s-> last_picture.data[0];
s->m. new_picture.data[0]= s-> input_picture.data[0];
s->m.current_picture_ptr= &s->m.current_picture;
s->m. last_picture_ptr= &s->m. last_picture;
s->m.linesize=
s->m. last_picture.linesize[0]=
s->m. new_picture.linesize[0]=
s->m.current_picture.linesize[0]= stride;
s->m.width = width;
s->m.height= height;
s->m.mb_width = block_width;
s->m.mb_height= block_height;
s->m.mb_stride= s->m.mb_width+1;
s->m.b8_stride= 2*s->m.mb_width+1;
s->m.f_code=1;
s->m.pict_type= pict->pict_type;
s->m.me_method= s->avctx->me_method;
s->m.me.scene_change_score=0;
s->m.flags= s->avctx->flags;
s->m.quarter_sample= (s->avctx->flags & CODEC_FLAG_QPEL)!=0;
s->m.out_format= FMT_H263;
s->m.unrestricted_mv= 1;
s->m.lambda= pict->quality * 3/2; //FIXME bug somewhere else
s->m.qscale= (s->m.lambda*139 + FF_LAMBDA_SCALE*64) >> (FF_LAMBDA_SHIFT + 7);
s->m.lambda2= (s->m.lambda*s->m.lambda + FF_LAMBDA_SCALE/2) >> FF_LAMBDA_SHIFT;
if(!s->motion_val8){
s->motion_val8 = av_mallocz(s->m.b8_stride*block_height*2*2*sizeof(int16_t));
s->motion_val16= av_mallocz(s->m.mb_stride*block_height*2*sizeof(int16_t));
}
s->m.mb_type= s->mb_type;
//dummies, to avoid segfaults
s->m.current_picture.mb_mean = s->mb_mean;
s->m.current_picture.mb_var = (int16_t*)s->dummy;
s->m.current_picture.mc_mb_var= (int16_t*)s->dummy;
s->m.current_picture.mb_type = s->dummy;
s->m.current_picture.motion_val[0]= s->motion_val8;
s->m.p_mv_table= s->motion_val16;
s->m.dsp= s->dsp; //move
ff_init_me(&s->m);
s->m.me.pre_pass=1;
s->m.me.dia_size= s->avctx->pre_dia_size;
s->m.first_slice_line=1;
for(y= block_height-1; y >= 0; y--) {
uint8_t src[stride*16];
s->m.new_picture.data[0]= src - y*16*stride; //ugly
s->m.mb_y= y;
for(i=0; i<16 && i + 16*y<height; i++){
memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
for(x=width; x<16*block_width; x++)
src[i*stride+x]= src[i*stride+x-1];
}
for(; i<16 && i + 16*y<16*block_height; i++)
memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
for(x=block_width-1; x >=0 ;x--) {
s->m.mb_x= x;
ff_init_block_index(&s->m);
ff_update_block_index(&s->m);
ff_pre_estimate_p_frame_motion(&s->m, x, y);
}
s->m.first_slice_line=0;
}
s->m.me.pre_pass=0;
s->m.me.dia_size= s->avctx->dia_size;
s->m.first_slice_line=1;
for (y = 0; y < block_height; y++) {
uint8_t src[stride*16];
s->m.new_picture.data[0]= src - y*16*stride; //ugly
s->m.mb_y= y;
assert(width <= stride);
assert(width <= 16*block_width);
for(i=0; i<16 && i + 16*y<height; i++){
memcpy(&src[i*stride], &src_plane[(i+16*y)*src_stride], width);
for(x=width; x<16*block_width; x++)
src[i*stride+x]= src[i*stride+x-1];
}
for(; i<16 && i + 16*y<16*block_height; i++)
memcpy(&src[i*stride], &src[(i-1)*stride], 16*block_width);
for (x = 0; x < block_width; x++) {
int mb_xy= x + y*(s->mb_band.stride);
s->m.mb_x= x;
ff_init_block_index(&s->m);
ff_update_block_index(&s->m);
ff_estimate_p_frame_motion(&s->m, x, y);
s->mb_band .buf[mb_xy]= (s->m.mb_type[x + y*s->m.mb_stride]&CANDIDATE_MB_TYPE_INTER)
? 0 : 2;
s->mv_band[0].buf[mb_xy]= s->motion_val16[x + y*s->m.mb_stride][0];
s->mv_band[1].buf[mb_xy]= s->motion_val16[x + y*s->m.mb_stride][1];
if(s->mb_band .buf[x + y*(s->mb_band.stride)]==2 && 0){
int dc0=128, dc1=128, dc, dc2, dir;
int offset= (s->avctx->flags & CODEC_FLAG_QPEL) ? 64 : 32;
dc =s->mb_mean[x + y *s->m.mb_stride ];
if(x) dc0=s->mb_mean[x + y *s->m.mb_stride - 1];
if(y) dc1=s->mb_mean[x + (y-1)*s->m.mb_stride ];
dc2= (dc0+dc1)>>1;
#if 0
if (ABS(dc0 - dc) < ABS(dc1 - dc) && ABS(dc0 - dc) < ABS(dc2 - dc))
dir= 1;
else if(ABS(dc0 - dc) >=ABS(dc1 - dc) && ABS(dc1 - dc) < ABS(dc2 - dc))
dir=-1;
else
dir=0;
#endif
if(ABS(dc0 - dc) < ABS(dc1 - dc) && x){
s->mv_band[0].buf[mb_xy]= s->mv_band[0].buf[x + y*(s->mb_band.stride)-1] - offset;
s->mv_band[1].buf[mb_xy]= s->mv_band[1].buf[x + y*(s->mb_band.stride)-1];
s->mb_mean[x + y *s->m.mb_stride ]= dc0;
}else if(y){
s->mv_band[0].buf[mb_xy]= s->mv_band[0].buf[x + (y-1)*(s->mb_band.stride)];
s->mv_band[1].buf[mb_xy]= s->mv_band[1].buf[x + (y-1)*(s->mb_band.stride)] - offset;
s->mb_mean[x + y *s->m.mb_stride ]= dc1;
}
}
// s->mb_band .buf[x + y*(s->mb_band.stride)]=1; //FIXME intra only test
}
s->m.first_slice_line=0;
}
assert(s->m.pict_type == P_TYPE);
if(s->m.me.scene_change_score > s->avctx->scenechange_threshold){
s->m.pict_type=
pict->pict_type =I_TYPE;
for(i=0; i<s->mb_band.stride * s->mb_band.height; i++){
s->mb_band.buf[i]= 1;
s->mv_band[0].buf[i]=
s->mv_band[1].buf[i]= 0;
}
//printf("Scene change detected, encoding as I Frame %d %d\n", s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
}
}
s->m.first_slice_line=1;
s->qbias= pict->pict_type == P_TYPE ? 2 : 0;
encode_header(s);
decorrelate(s, &s->mb_band , s->mb_band .buf, s->mb_band .stride, 0, 1);
decorrelate(s, &s->mv_band[0], s->mv_band[0].buf, s->mv_band[0].stride, 0, 1);
decorrelate(s, &s->mv_band[1], s->mv_band[1].buf, s->mv_band[1].stride, 0 ,1);
encode_subband(s, &s->mb_band , s->mb_band .buf, NULL, s->mb_band .stride, 0);
encode_subband(s, &s->mv_band[0], s->mv_band[0].buf, NULL, s->mv_band[0].stride, 0);
encode_subband(s, &s->mv_band[1], s->mv_band[1].buf, NULL, s->mv_band[1].stride, 0);
//FIXME avoid this
correlate(s, &s->mb_band , s->mb_band .buf, s->mb_band .stride, 1, 1);
correlate(s, &s->mv_band[0], s->mv_band[0].buf, s->mv_band[0].stride, 1, 1);
correlate(s, &s->mv_band[1], s->mv_band[1].buf, s->mv_band[1].stride, 1, 1);
for(plane_index=0; plane_index<3; plane_index++){
Plane *p= &s->plane[plane_index];
int w= p->width;
int h= p->height;
int x, y;
int bits= put_bits_count(&s->c.pb);
//FIXME optimize
#if QPRED
memset(s->pred_buffer, 0, sizeof(DWTELEM)*w*h);
predict_plane(s, s->pred_buffer, plane_index, 1);
spatial_dwt(s, s->pred_buffer, w, h, w);
for(level=0; level<s->spatial_decomposition_count; level++){
for(orientation=level ? 1 : 0; orientation<4; orientation++){
SubBand *b= &p->band[level][orientation];
int delta= ((int)s->pred_buffer - (int)s->spatial_dwt_buffer)/sizeof(DWTELEM);
quantize (s, b, b->buf + delta, b->stride, s->qbias);
dequantize(s, b, b->buf + delta, b->stride);
}
}
for(y=0; y<h; y++){
for(x=0; x<w; x++){
s->spatial_dwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<8;
}
}
spatial_dwt(s, s->spatial_dwt_buffer, w, h, w);
for(y=0; y<h; y++){
for(x=0; x<w; x++){
s->spatial_dwt_buffer[y*w + x]-= s->pred_buffer[y*w + x];
}
}
#else
if(pict->data[plane_index]) //FIXME gray hack
for(y=0; y<h; y++){
for(x=0; x<w; x++){
s->spatial_dwt_buffer[y*w + x]= pict->data[plane_index][y*pict->linesize[plane_index] + x]<<8;
}
}
predict_plane(s, s->spatial_dwt_buffer, plane_index, 0);
spatial_dwt(s, s->spatial_dwt_buffer, w, h, w);
#endif
for(level=0; level<s->spatial_decomposition_count; level++){
for(orientation=level ? 1 : 0; orientation<4; orientation++){
SubBand *b= &p->band[level][orientation];
quantize(s, b, b->buf, b->stride, s->qbias);
if(orientation==0)
decorrelate(s, b, b->buf, b->stride, pict->pict_type == P_TYPE, 0);
encode_subband(s, b, b->buf, b->parent ? b->parent->buf : NULL, b->stride, orientation);
assert(b->parent==NULL || b->parent->stride == b->stride*2);
if(orientation==0)
correlate(s, b, b->buf, b->stride, 1, 0);
}
}
// av_log(NULL, AV_LOG_DEBUG, "plane:%d bits:%d\n", plane_index, put_bits_count(&s->c.pb) - bits);
for(level=0; level<s->spatial_decomposition_count; level++){
for(orientation=level ? 1 : 0; orientation<4; orientation++){
SubBand *b= &p->band[level][orientation];
dequantize(s, b, b->buf, b->stride);
}
}
#if QPRED
for(y=0; y<h; y++){
for(x=0; x<w; x++){
s->spatial_dwt_buffer[y*w + x]+= s->pred_buffer[y*w + x];
}
}
spatial_idwt(s, s->spatial_dwt_buffer, w, h, w);
#else
spatial_idwt(s, s->spatial_dwt_buffer, w, h, w);
predict_plane(s, s->spatial_dwt_buffer, plane_index, 1);
#endif
//FIXME optimize
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int v= (s->spatial_dwt_buffer[y*w + x]+128)>>8;
if(v&(~255)) v= ~(v>>31);
s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]= v;
}
}
if(s->avctx->flags&CODEC_FLAG_PSNR){
int64_t error= 0;
if(pict->data[plane_index]) //FIXME gray hack
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int d= s->spatial_dwt_buffer[y*w + x] - pict->data[plane_index][y*pict->linesize[plane_index] + x]*256;
error += d*d;
}
}
error= (error + 128*256)>>16;
s->avctx->error[plane_index] += error;
s->avctx->error[3] += error;
}
}
if(s->last_picture.data[0])
avctx->release_buffer(avctx, &s->last_picture);
emms_c();
return put_cabac_terminate(c, 1);
}
static void common_end(SnowContext *s){
av_freep(&s->spatial_dwt_buffer);
av_freep(&s->mb_band.buf);
av_freep(&s->mv_band[0].buf);
av_freep(&s->mv_band[1].buf);
av_freep(&s->m.me.scratchpad);
av_freep(&s->m.me.map);
av_freep(&s->m.me.score_map);
av_freep(&s->mb_type);
av_freep(&s->mb_mean);
av_freep(&s->dummy);
av_freep(&s->motion_val8);
av_freep(&s->motion_val16);
}
static int encode_end(AVCodecContext *avctx)
{
SnowContext *s = avctx->priv_data;
common_end(s);
return 0;
}
static int decode_init(AVCodecContext *avctx)
{
// SnowContext *s = avctx->priv_data;
common_init(avctx);
return 0;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size){
SnowContext *s = avctx->priv_data;
CABACContext * const c= &s->c;
const int width= s->avctx->width;
const int height= s->avctx->height;
int bytes_read;
AVFrame *picture = data;
int log2_threshold, level, orientation, plane_index;
/* no supplementary picture */
if (buf_size == 0)
return 0;
ff_init_cabac_decoder(c, buf, buf_size);
ff_init_cabac_states(c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64);
memset(s->header_state, 0, sizeof(s->header_state));
s->current_picture.pict_type= FF_I_TYPE; //FIXME I vs. P
decode_header(s);
frame_start(s);
//keyframe flag dupliaction mess FIXME
if(avctx->debug&FF_DEBUG_PICT_INFO)
av_log(avctx, AV_LOG_ERROR, "keyframe:%d qlog:%d\n", s->keyframe, s->qlog);
decode_subband(s, &s->mb_band , s->mb_band .buf, NULL, s->mb_band .stride, 0);
decode_subband(s, &s->mv_band[0], s->mv_band[0].buf, NULL, s->mv_band[0].stride, 0);
decode_subband(s, &s->mv_band[1], s->mv_band[1].buf, NULL, s->mv_band[1].stride, 0);
correlate(s, &s->mb_band , s->mb_band .buf, s->mb_band .stride, 1, 1);
correlate(s, &s->mv_band[0], s->mv_band[0].buf, s->mv_band[0].stride, 1, 1);
correlate(s, &s->mv_band[1], s->mv_band[1].buf, s->mv_band[1].stride, 1, 1);
for(plane_index=0; plane_index<3; plane_index++){
Plane *p= &s->plane[plane_index];
int w= p->width;
int h= p->height;
int x, y;
if(s->avctx->debug&2048){
memset(s->spatial_dwt_buffer, 0, sizeof(DWTELEM)*w*h);
predict_plane(s, s->spatial_dwt_buffer, plane_index, 1);
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int v= (s->spatial_dwt_buffer[y*w + x]+128)>>8;
if(v&(~255)) v= ~(v>>31);
s->mconly_picture.data[plane_index][y*s->mconly_picture.linesize[plane_index] + x]= v;
}
}
}
for(level=0; level<s->spatial_decomposition_count; level++){
for(orientation=level ? 1 : 0; orientation<4; orientation++){
SubBand *b= &p->band[level][orientation];
decode_subband(s, b, b->buf, b->parent ? b->parent->buf : NULL, b->stride, orientation);
if(orientation==0)
correlate(s, b, b->buf, b->stride, 1, 0);
}
}
if(!(s->avctx->debug&1024))
for(level=0; level<s->spatial_decomposition_count; level++){
for(orientation=level ? 1 : 0; orientation<4; orientation++){
SubBand *b= &p->band[level][orientation];
dequantize(s, b, b->buf, b->stride);
}
}
#if QPRED
memset(s->pred_buffer, 0, sizeof(DWTELEM)*w*h);
predict_plane(s, s->pred_buffer, plane_index, 1);
spatial_dwt(s, s->pred_buffer, w, h, w);
for(level=0; level<s->spatial_decomposition_count; level++){
for(orientation=level ? 1 : 0; orientation<4; orientation++){
SubBand *b= &p->band[level][orientation];
int delta= ((int)s->pred_buffer - (int)s->spatial_dwt_buffer)/sizeof(DWTELEM);
quantize (s, b, b->buf + delta, b->stride, s->qbias);
dequantize(s, b, b->buf + delta, b->stride);
}
}
for(y=0; y<h; y++){
for(x=0; x<w; x++){
s->spatial_dwt_buffer[y*w + x]+= s->pred_buffer[y*w + x];
}
}
spatial_idwt(s, s->spatial_dwt_buffer, w, h, w);
#else
spatial_idwt(s, s->spatial_dwt_buffer, w, h, w);
predict_plane(s, s->spatial_dwt_buffer, plane_index, 1);
#endif
//FIXME optimize
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int v= (s->spatial_dwt_buffer[y*w + x]+128)>>8;
if(v&(~255)) v= ~(v>>31);
s->current_picture.data[plane_index][y*s->current_picture.linesize[plane_index] + x]= v;
}
}
}
emms_c();
if(s->last_picture.data[0])
avctx->release_buffer(avctx, &s->last_picture);
if(!(s->avctx->debug&2048))
*picture= s->current_picture;
else
*picture= s->mconly_picture;
*data_size = sizeof(AVFrame);
bytes_read= get_cabac_terminate(c);
if(bytes_read ==0) av_log(s->avctx, AV_LOG_ERROR, "error at end of frame\n");
return bytes_read;
}
static int decode_end(AVCodecContext *avctx)
{
SnowContext *s = avctx->priv_data;
common_end(s);
return 0;
}
AVCodec snow_decoder = {
"snow",
CODEC_TYPE_VIDEO,
CODEC_ID_SNOW,
sizeof(SnowContext),
decode_init,
NULL,
decode_end,
decode_frame,
0 /*CODEC_CAP_DR1*/ /*| CODEC_CAP_DRAW_HORIZ_BAND*/,
NULL
};
AVCodec snow_encoder = {
"snow",
CODEC_TYPE_VIDEO,
CODEC_ID_SNOW,
sizeof(SnowContext),
encode_init,
encode_frame,
encode_end,
};
#if 0
#undef malloc
#undef free
#undef printf
int main(){
int width=256;
int height=256;
int buffer[2][width*height];
SnowContext s;
int i;
s.spatial_decomposition_count=6;
s.spatial_decomposition_type=1;
printf("testing 5/3 DWT\n");
for(i=0; i<width*height; i++)
buffer[0][i]= buffer[1][i]= random()%54321 - 12345;
spatial_dwt(&s, buffer[0], width, height, width);
spatial_idwt(&s, buffer[0], width, height, width);
for(i=0; i<width*height; i++)
if(buffer[0][i]!= buffer[1][i]) printf("fsck: %d %d %d\n",i, buffer[0][i], buffer[1][i]);
printf("testing 9/7 DWT\n");
s.spatial_decomposition_type=0;
for(i=0; i<width*height; i++)
buffer[0][i]= buffer[1][i]= random()%54321 - 12345;
spatial_dwt(&s, buffer[0], width, height, width);
spatial_idwt(&s, buffer[0], width, height, width);
for(i=0; i<width*height; i++)
if(buffer[0][i]!= buffer[1][i]) printf("fsck: %d %d %d\n",i, buffer[0][i], buffer[1][i]);
printf("testing AC coder\n");
memset(s.header_state, 0, sizeof(s.header_state));
ff_init_cabac_encoder(&s.c, buffer[0], 256*256);
ff_init_cabac_states(&s.c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64);
for(i=-256; i<256; i++){
START_TIMER
put_symbol(&s.c, s.header_state, i*i*i/3*ABS(i), 1);
STOP_TIMER("put_symbol")
}
put_cabac_terminate(&s.c, 1);
memset(s.header_state, 0, sizeof(s.header_state));
ff_init_cabac_decoder(&s.c, buffer[0], 256*256);
ff_init_cabac_states(&s.c, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64);
for(i=-256; i<256; i++){
int j;
START_TIMER
j= get_symbol(&s.c, s.header_state, 1);
STOP_TIMER("get_symbol")
if(j!=i*i*i/3*ABS(i)) printf("fsck: %d != %d\n", i, j);
}
{
int level, orientation, x, y;
int64_t errors[8][4];
int64_t g=0;
memset(errors, 0, sizeof(errors));
s.spatial_decomposition_count=3;
s.spatial_decomposition_type=0;
for(level=0; level<s.spatial_decomposition_count; level++){
for(orientation=level ? 1 : 0; orientation<4; orientation++){
int w= width >> (s.spatial_decomposition_count-level);
int h= height >> (s.spatial_decomposition_count-level);
int stride= width << (s.spatial_decomposition_count-level);
DWTELEM *buf= buffer[0];
int64_t error=0;
if(orientation&1) buf+=w;
if(orientation>1) buf+=stride>>1;
memset(buffer[0], 0, sizeof(int)*width*height);
buf[w/2 + h/2*stride]= 256*256;
spatial_idwt(&s, buffer[0], width, height, width);
for(y=0; y<height; y++){
for(x=0; x<width; x++){
int64_t d= buffer[0][x + y*width];
error += d*d;
if(ABS(width/2-x)<9 && ABS(height/2-y)<9 && level==2) printf("%8lld ", d);
}
if(ABS(height/2-y)<9 && level==2) printf("\n");
}
error= (int)(sqrt(error)+0.5);
errors[level][orientation]= error;
if(g) g=ff_gcd(g, error);
else g= error;
}
}
printf("static int const visual_weight[][4]={\n");
for(level=0; level<s.spatial_decomposition_count; level++){
printf(" {");
for(orientation=0; orientation<4; orientation++){
printf("%8lld,", errors[level][orientation]/g);
}
printf("},\n");
}
printf("};\n");
{
int level=2;
int orientation=3;
int w= width >> (s.spatial_decomposition_count-level);
int h= height >> (s.spatial_decomposition_count-level);
int stride= width << (s.spatial_decomposition_count-level);
DWTELEM *buf= buffer[0];
int64_t error=0;
buf+=w;
buf+=stride>>1;
memset(buffer[0], 0, sizeof(int)*width*height);
#if 1
for(y=0; y<height; y++){
for(x=0; x<width; x++){
int tab[4]={0,2,3,1};
buffer[0][x+width*y]= 256*256*tab[(x&1) + 2*(y&1)];
}
}
spatial_dwt(&s, buffer[0], width, height, width);
#else
for(y=0; y<h; y++){
for(x=0; x<w; x++){
buf[x + y*stride ]=169;
buf[x + y*stride-w]=64;
}
}
spatial_idwt(&s, buffer[0], width, height, width);
#endif
for(y=0; y<height; y++){
for(x=0; x<width; x++){
int64_t d= buffer[0][x + y*width];
error += d*d;
if(ABS(width/2-x)<9 && ABS(height/2-y)<9) printf("%8lld ", d);
}
if(ABS(height/2-y)<9) printf("\n");
}
}
}
return 0;
}
#endif
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