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third_party_ffmpeg/libavcodec/snow.c
Michael Niedermayer de890c9bd1 typo 
Originally committed as revision 3342 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-07-26 13:31:48 +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 1
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 w, h;
int run=0;
int last_run=0;
int last_v=1;
int last_x=0;
int runs[b->width*b->height];
int run_index=0;
if(orientation==1){
w= b->height;
h= b->width;
}else{
w= b->width;
h= b->height;
}
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int v, p;
int l=0, t=0, lt=0, rt=0/*, pri2=0*/;
if(orientation==1) v= src[y + x*stride];
else v= src[x + y*stride];
if(y){
if(orientation==1) t= src[y - 1 + x*stride];
else t= src[x + (y-1)*stride];
if(x){
if(orientation==1) lt= src[y - 1 + (x-1)*stride];
else lt= src[x - 1 + (y-1)*stride];
}
if(x + 1 < w){
if(orientation==1) rt= src[y - 1 + (x+1)*stride];
else rt= src[x + 1 + (y-1)*stride];
}
}
if(x){
if(orientation==1) l= src[y + (x-1)*stride];
else l= src[x - 1 + y*stride];
/* if(x > 1){
if(orientation==1) pri2= src[y + (x-2)*stride];
else pri2= src[x - 2 + y*stride];
}*/
}
if(!(lt|rt|t|l)){
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+7], run, 0);
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int v, p;
int l=0, t=0, lt=0, rt=0/*, pri2=0*/;
if(orientation==1) v= src[y + x*stride];
else v= src[x + y*stride];
if(y){
if(orientation==1) t= src[y - 1 + x*stride];
else t= src[x + (y-1)*stride];
if(x){
if(orientation==1) lt= src[y - 1 + (x-1)*stride];
else lt= src[x - 1 + (y-1)*stride];
}
if(x + 1 < w){
if(orientation==1) rt= src[y - 1 + (x+1)*stride];
else rt= src[x + 1 + (y-1)*stride];
}
}
if(x){
if(orientation==1) l= src[y + (x-1)*stride];
else l= src[x - 1 + y*stride];
/* if(x > 1){
if(orientation==1) pri2= src[y + (x-2)*stride];
else pri2= src[x - 2 + y*stride];
}*/
}
if(lt|rt|t|l){
put_cabac(&s->c, &b->state[0][(!l) + 2*(!t) + 4*(!lt) + 8*(!rt)], !v);
}else{
if(!run){
run= runs[run_index++];
put_symbol(&s->c, b->state[1+7], run, 0);
assert(v);
}else{
run--;
assert(!v);
}
}
if(v){
put_symbol(&s->c, b->state[quant13[(ABS(l) + ABS(t))&0x7F] + 1], ABS(v)-1, 0);
put_cabac(&s->c, &b->state[0][16 + 1 + 3 + quant3b[l&0xFF] + 3*quant3b[t&0xFF]], v<0);
}
}
}
return;
}
if(1){
int w, h;
int run=0;
int last_run=0;
int last_v=1;
int last_x=0;
if(orientation==1){
w= b->height;
h= b->width;
}else{
w= b->width;
h= b->height;
}
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int v, p;
if(orientation==1) v= src[y + x*stride];
else v= src[x + y*stride];
if(v){
int sec=0, pri=0/*, lt=0, rt=0, pri2=0*/;
if(y){
if(orientation==1) sec= src[y - 1 + x*stride];
else sec= src[x + (y-1)*stride];
/* if(x){
if(orientation==1) lt= src[y - 1 + (x-1)*stride];
else lt= src[x - 1 + (y-1)*stride];
}*/
}
/* if (orientation==1 && y + 1 < h && x) rt= src[y + 1 + (x-1)*stride];
else if (orientation!=1 && x + 1 < w && y) rt= src[x + 1 + (y-1)*stride];*/
if(x){
if(orientation==1) pri= src[y + (x-1)*stride];
else pri= src[x - 1 + y*stride];
/* if(x > 1){
if(orientation==1) pri2= src[y + (x-2)*stride];
else pri2= src[x - 2 + y*stride];
}*/
}
put_symbol(&s->c, b->state[ABS(quant7[last_v&0xFF])], run, 0);
// context= 3*7 + 3 + quant11[last_v&0xFF] /*+ 7*quant3[(run-1)&0xFF]*/;
// if(parent && orientation!=1) context += 3*7+7*quant3[parent[(x>>1) + (y>>1)*2*stride]&0xFF];
// put_symbol(&s->c, b->state[ABS(quant7[pri&0xFF]) + 4*ABS(quant7[sec&0xFF]) + 8], ABS(v)-1, 0);
put_symbol(&s->c, b->state[quant13[(ABS(pri) + ABS(sec))&0x7F] + 8], ABS(v)-1, 0);
// context= quant3b[sec&0xFF] + 3*quant3b[pri&0xFF];
// put_cabac(&s->c, &b->state[7][ABS(context)], (v^context)<0);
put_cabac(&s->c, &b->state[7][1 + 3 + quant3b[sec&0xFF] + 3*quant3b[pri&0xFF]], v<0);
last_run=run;
last_v=v;
run=0;
}else{
run++;
}
}
}
if(run){
put_symbol(&s->c, b->state[ABS(quant7[last_v&0xFF])], run, 0);
}
return;
}
{
int run=0;
int mode=1;
for(y=0; y<h; y++){
for(x=0; x<w; x++){
// int context=5*11*11 + 5*11+5;
int context=3*7 + 3 + 1;
int v= src[x + y*stride];
if(mode){
if(v){
put_symbol(&s->c, b->state[0], run, 0);
mode=0;
run=0;
}else{
run++;
continue;
}
}
if(x /*&& orientation!=1*/) context += quant7[src[x-1 + y*stride ]&0xFF];
if(y /*&& orientation!=2*/) context += 7*quant7[src[x + y*stride-stride]&0xFF];
// if(x>1) context += 11*11*quant3 [src[x-2 + y*stride ]&0xFF];
// if(parent) context += 11*11*quant3[parent[(x>>1) + (y>>1)*2*stride]&0xFF];
put_symbol(&s->c, b->state[context], v, 1);
if(v==0){
mode=1;
}
}
}
if(mode && run)
put_symbol(&s->c, b->state[0], run, 0);
}
}
static inline void decode_subbandX(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 w,h;
int run;
int last_run;
for(y=0; y<b->height; y++)
memset(&src[y*stride], 0, b->width*sizeof(DWTELEM));
if(orientation==1){
w= b->height;
h= b->width;
}else{
w= b->width;
h= b->height;
}
x=y=0;
run= get_symbol(&s->c, b->state[1+7], 0);
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int v, p;
int l=0, t=0, lt=0, rt=0/*, pri2=0*/;
if(y){
if(orientation==1) t= src[y - 1 + x*stride];
else t= src[x + (y-1)*stride];
if(x){
if(orientation==1) lt= src[y - 1 + (x-1)*stride];
else lt= src[x - 1 + (y-1)*stride];
}
if(x + 1 < w){
if(orientation==1) rt= src[y - 1 + (x+1)*stride];
else rt= src[x + 1 + (y-1)*stride];
}
}
if(x){
if(orientation==1) l= src[y + (x-1)*stride];
else l= src[x - 1 + y*stride];
/* if(x > 1){
if(orientation==1) pri2= src[y + (x-2)*stride];
else pri2= src[x - 2 + y*stride];
}*/
}
if(lt|rt|t|l){
v=!get_cabac(&s->c, &b->state[0][(!l) + 2*(!t) + 4*(!lt) + 8*(!rt)]);
}else{
if(!run){
run= get_symbol(&s->c, b->state[1+7], 0);
//FIXME optimize this here
//FIXME try to store a more naive run
v=1;
}else{
run--;
v=0;
}
}
if(v){
v= get_symbol(&s->c, b->state[quant13[(ABS(l) + ABS(t))&0x7F] + 1], 0) + 1;
if(get_cabac(&s->c, &b->state[0][16 + 1 + 3 + quant3b[l&0xFF] + 3*quant3b[t&0xFF]]))
v= -v;
if(orientation==1) src[y + x*stride]= v;
else src[x + y*stride]= v;
}
}
}
if(level+1 == s->spatial_decomposition_count){
STOP_TIMER("decode_subband")
}
return;
}
if(1){
int w,h;
int last_run=0;
int last_v=1;
for(y=0; y<b->height; y++)
memset(&src[y*stride], 0, b->width*sizeof(DWTELEM));
if(orientation==1){
w= b->height;
h= b->width;
}else{
w= b->width;
h= b->height;
}
x=y=0;
for(;;){
int sec=0, pri=0/*, lt=0, rt=0, pri2=0*/;
last_run= get_symbol(&s->c, b->state[ABS(quant7[last_v&0xFF])], 0);
// context= 3*7 + 3 + quant7[last_v&0xFF]/* + 7*quant7[(last_run-1)&0xFF]*/;
x += last_run;
while(x>=w){
x-= w;
if(++y>=h) break;
/* if(orientation!=1)
memset(&src[y*stride], 0, w*sizeof(DWTELEM));*/
}
if(y>=h) break;
if(y){
if(orientation==1) sec= src[y - 1 + x*stride];
else sec= src[x + (y-1)*stride];
/* if(x){
if(orientation==1) lt= src[y - 1 + (x-1)*stride];
else lt= src[x - 1 + (y-1)*stride];
}*/
}
/* if (orientation==1 && y + 1 < h && x) rt= src[y + 1 + (x-1)*stride];
else if (orientation!=1 && x + 1 < w && y) rt= src[x + 1 + (y-1)*stride];*/
if(x){
if(orientation==1) pri= src[y + (x-1)*stride];
else pri= src[x - 1 + y*stride];
/* if(x > 1){
if(orientation==1) pri2= src[y + (x-2)*stride];
else pri2= src[x - 2 + y*stride];
}*/
}
last_v= get_symbol(&s->c, b->state[quant13[(ABS(pri) + ABS(sec))&0x7F] + 8], 0) + 1;
if(get_cabac(&s->c, &b->state[7][1 + 3 + quant3b[sec&0xFF] + 3*quant3b[pri&0xFF]]))
last_v= -last_v;
if(orientation==1) src[y + x*stride]= last_v;
else src[x + y*stride]= last_v;
if(++x==w){
x=0;
if(++y>=h) break;
/* if(orientation!=1)
memset(&src[y*stride], 0, w*sizeof(DWTELEM));*/
}
}
if(level+1 == s->spatial_decomposition_count){
STOP_TIMER("decode_subband")
}
return;
}
}
static void decode_subband(SnowContext *s, SubBand *b, DWTELEM *src, DWTELEM *parent, int stride, int orientation){
if(orientation==1) decode_subbandX(s, b, src, parent, stride, 1);
else decode_subbandX(s, b, src, parent, stride, 0);
}
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;
assert(QROOT==8);
bias= bias ? 0 : (3*qmul)>>3;
if(!bias){
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int i= src[x + y*stride];
//FIXME use threshold
//FIXME optimize
//FIXME bias
if(i>=0){
i<<= QEXPSHIFT;
i/= qmul;
src[x + y*stride]= i;
}else{
i= -i;
i<<= QEXPSHIFT;
i/= qmul;
src[x + y*stride]= -i;
}
}
}
}else{
for(y=0; y<h; y++){
for(x=0; x<w; x++){
int i= src[x + y*stride];
//FIXME use threshold
//FIXME optimize
//FIXME bias
if(i>=0){
i<<= QEXPSHIFT;
i= (i + bias) / qmul;
src[x + y*stride]= i;
}else{
i= -i;
i<<= QEXPSHIFT;
i= (i + bias) / qmul;
src[x + y*stride]= -i;
}
}
}
}
}
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*log2(pict->quality / (float)FF_QP2LAMBDA));
//<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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