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Diffstat (limited to 'contrib/ffmpeg/tests/tiny_psnr.c')
-rw-r--r--contrib/ffmpeg/tests/tiny_psnr.c154
1 files changed, 0 insertions, 154 deletions
diff --git a/contrib/ffmpeg/tests/tiny_psnr.c b/contrib/ffmpeg/tests/tiny_psnr.c
deleted file mode 100644
index d8bce2b7b..000000000
--- a/contrib/ffmpeg/tests/tiny_psnr.c
+++ /dev/null
@@ -1,154 +0,0 @@
-/*
- * Copyright (c) 2003 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <inttypes.h>
-#include <assert.h>
-
-#define F 100
-#define SIZE 2048
-
-uint64_t exp16_table[21]={
- 65537,
- 65538,
- 65540,
- 65544,
- 65552,
- 65568,
- 65600,
- 65664,
- 65793,
- 66050,
- 66568,
- 67616,
- 69763,
- 74262,
- 84150,
- 108051,
- 178145,
- 484249,
- 3578144,
- 195360063,
- 582360139072LL,
-};
-#if 1
-// 16.16 fixpoint exp()
-static unsigned int exp16(unsigned int a){
- int i;
- int out= 1<<16;
-
- for(i=19;i>=0;i--){
- if(a&(1<<i))
- out= (out*exp16_table[i] + (1<<15))>>16;
- }
-
- return out;
-}
-// 16.16 fixpoint log()
-static int64_t log16(uint64_t a){
- int i;
- int out=0;
-
- if(a < 1<<16)
- return -log16((1LL<<32) / a);
- a<<=16;
-
- for(i=20;i>=0;i--){
- int64_t b= exp16_table[i];
- if(a<(b<<16)) continue;
- out |= 1<<i;
- a = ((a/b)<<16) + (((a%b)<<16) + b/2)/b;
- }
- return out;
-}
-
-#endif
-static uint64_t int_sqrt(uint64_t a)
-{
- uint64_t ret=0;
- int s;
- uint64_t ret_sq=0;
-
- for(s=31; s>=0; s--){
- uint64_t b= ret_sq + (1ULL<<(s*2)) + (ret<<s)*2;
- if(b<=a){
- ret_sq=b;
- ret+= 1ULL<<s;
- }
- }
- return ret;
-}
-
-int main(int argc,char* argv[]){
- int i, j;
- uint64_t sse=0;
- uint64_t dev;
- FILE *f[2];
- uint8_t buf[2][SIZE];
- uint64_t psnr;
- int len= argc<4 ? 1 : atoi(argv[3]);
- int64_t max= (1<<(8*len))-1;
- int shift= argc<5 ? 0 : atoi(argv[4]);
- int skip_bytes = argc<6 ? 0 : atoi(argv[5]);
-
- if(argc<3){
- printf("tiny_psnr <file1> <file2> [<elem size> [<shift> [<skip bytes>]]]\n");
- printf("for wav files use the following:\n");
- printf("./tiny_psnr file1.wav file2.wav 2 0 44 to skip the header.\n");
- return -1;
- }
-
- f[0]= fopen(argv[1], "rb");
- f[1]= fopen(argv[2], "rb");
- fseek(f[shift<0], shift < 0 ? -shift : shift, SEEK_SET);
-
- fseek(f[0],skip_bytes,SEEK_CUR);
- fseek(f[1],skip_bytes,SEEK_CUR);
-
- for(i=0;;){
- if( fread(buf[0], SIZE, 1, f[0]) != 1) break;
- if( fread(buf[1], SIZE, 1, f[1]) != 1) break;
-
- for(j=0; j<SIZE; i++,j++){
- int64_t a= buf[0][j];
- int64_t b= buf[1][j];
- if(len==2){
- a= (int16_t)(a | (buf[0][++j]<<8));
- b= (int16_t)(b | (buf[1][ j]<<8));
- }
- sse += (a-b) * (a-b);
- }
- }
-
- if(!i) i=1;
- dev= int_sqrt( ((sse/i)*F*F) + (((sse%i)*F*F) + i/2)/i );
- if(sse)
- psnr= ((2*log16(max<<16) + log16(i) - log16(sse))*284619LL*F + (1<<31)) / (1LL<<32);
- else
- psnr= 100*F-1; //floating point free infinity :)
-
- printf("stddev:%3d.%02d PSNR:%2d.%02d bytes:%d\n",
- (int)(dev/F), (int)(dev%F),
- (int)(psnr/F), (int)(psnr%F),
- i*len);
- return 0;
-}
-
-