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/*
* Copyright (C) 2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavcodec/snowenc.c"
#undef malloc
#undef free
#undef printf
#include "libavutil/lfg.h"
#include "libavutil/mathematics.h"
int main(void){
#define width 256
#define height 256
int buffer[2][width*height];
short obuffer[width*height];
SnowContext s;
int i;
AVLFG prng;
s.spatial_decomposition_count=6;
s.spatial_decomposition_type=1;
int ret = 0;
s.temp_dwt_buffer = av_mallocz_array(width, sizeof(DWTELEM));
s.temp_idwt_buffer = av_mallocz_array(width, sizeof(IDWTELEM));
if (!s.temp_dwt_buffer || !s.temp_idwt_buffer) {
fprintf(stderr, "Failed to allocate memory\n");
return 1;
}
av_lfg_init(&prng, 1);
printf("testing 5/3 DWT\n");
for(i=0; i<width*height; i++)
buffer[0][i] = buffer[1][i] = av_lfg_get(&prng) % 19000 - 9000;
ff_spatial_dwt(buffer[0], s.temp_dwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
for(i=0; i<width*height; i++)
obuffer[i] = buffer[0][i];
ff_spatial_idwt(obuffer, s.temp_idwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
for(i=0; i<width*height; i++)
if(buffer[1][i]!= obuffer[i]) {
printf("fsck: %4dx%4dx %12d %7d\n",i%width, i/width, buffer[1][i], obuffer[i]);
ret = 1;
}
printf("testing 9/7 DWT\n");
s.spatial_decomposition_type=0;
for(i=0; i<width*height; i++)
buffer[0][i] = buffer[1][i] = av_lfg_get(&prng) % 11000 - 5000;
ff_spatial_dwt(buffer[0], s.temp_dwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
for(i=0; i<width*height; i++)
obuffer[i] = buffer[0][i];
ff_spatial_idwt(obuffer, s.temp_idwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
for(i=0; i<width*height; i++)
if(FFABS(buffer[1][i] - obuffer[i])>20) {
printf("fsck: %4dx%4d %12d %7d\n",i%width, i/width, buffer[1][i], obuffer[i]);
ret = 1;
}
{
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(obuffer, 0, sizeof(short)*width*height);
buf[w/2 + h/2*stride]= 256*256;
ff_spatial_idwt(obuffer, s.temp_idwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
for(y=0; y<height; y++){
for(x=0; x<width; x++){
int64_t d= obuffer[x + y*width];
error += d*d;
if(FFABS(width/2-x)<9 && FFABS(height/2-y)<9 && level==2) printf("%8"PRId64" ", d);
}
if(FFABS(height/2-y)<9 && level==2) printf("\n");
}
error= (int)(sqrt(error)+0.5);
errors[level][orientation]= error;
if(g) g=av_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("%8"PRId64",", errors[level][orientation]/g);
}
printf("},\n");
}
printf("};\n");
{
int level=2;
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);
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)];
}
}
ff_spatial_dwt(buffer[0], s.temp_dwt_buffer, width, height, width, s.spatial_decomposition_type, s.spatial_decomposition_count);
for(y=0; y<height; y++){
for(x=0; x<width; x++){
int64_t d= buffer[0][x + y*width];
error += d*d;
if(FFABS(width/2-x)<9 && FFABS(height/2-y)<9) printf("%8"PRId64" ", d);
}
if(FFABS(height/2-y)<9) printf("\n");
}
}
}
return ret;
}
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