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tiny_psnr: skip wav headers on input files

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The byte count printed excludes the header, and offsets are applied
after the the headers are skipped.

Reference files updated to reflect new output.  Some stddev/psnr values
have changed slightly due to headers no longer being compared.

Originally committed as revision 24143 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård
2010-07-09 16:06:05 +00:00
parent 080ce9071d
commit c43d77c163
13 changed files with 52 additions and 35 deletions
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23
tests/tiny_psnr.c
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@@ -20,6 +20,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <assert.h>
@@ -117,8 +118,7 @@ int main(int argc,char* argv[]){
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");
printf("WAV headers are skipped automatically.\n");
return -1;
}
@@ -128,7 +128,24 @@ int main(int argc,char* argv[]){
fprintf(stderr, "Could not open input files.\n");
return -1;
}
fseek(f[shift<0], shift < 0 ? -shift : shift, SEEK_SET);
for (i = 0; i < 2; i++) {
uint8_t *p = buf[i];
fread(p, 1, 12, f[i]);
if (!memcmp(p, "RIFF", 4) &&
!memcmp(p+8, "WAVE", 4)) {
fread(p, 1, 8, f[i]);
while (memcmp(p, "data", 4)) {
int s = p[4] | p[5]<<8 | p[6]<<16 | p[7]<<24;
fseek(f[i], s, SEEK_CUR);
fread(p, 1, 8, f[i]);
}
} else {
fseek(f[i], -12, SEEK_CUR);
}
}
fseek(f[shift<0], shift < 0 ? -shift : shift, SEEK_CUR);
fseek(f[0],skip_bytes,SEEK_CUR);
fseek(f[1],skip_bytes,SEEK_CUR);