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support comparing files with some posiion offset relative to each other
Originally committed as revision 3921 to svn://svn.ffmpeg.org/ffmpeg/trunk
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c342499df2
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@ -18,6 +18,7 @@
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <assert.h>
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@ -102,16 +103,18 @@ int main(int argc,char* argv[]){
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FILE *f[2];
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uint8_t buf[2][SIZE];
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uint64_t psnr;
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int len= argc<4 ? 1 : 2;
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int len= argc<4 ? 1 : atoi(argv[3]);
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int64_t max= (1<<(8*len))-1;
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int shift= argc<5 ? 0 : atoi(argv[4]);
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if(argc<3){
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printf("tiny_psnr <file1> <file2>\n");
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printf("tiny_psnr <file1> <file2> [<elem size> [<shift>]]\n");
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return -1;
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}
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f[0]= fopen(argv[1], "rb");
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f[1]= fopen(argv[2], "rb");
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fseek(f[shift<0], shift < 0 ? -shift : shift, SEEK_SET);
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for(i=0;;){
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if( fread(buf[0], SIZE, 1, f[0]) != 1) break;
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