compare audio files 16bit wise instead of 8bit

additionally compare the mp2 case with some delay as this matches better (the delay issue obviously should be fixed)

Originally committed as revision 3922 to svn://svn.ffmpeg.org/ffmpeg/trunk

tests/ffmpeg.regression.ref

@@ -126,18 +126,19 @@ stddev: 10.99 PSNR:27.30 bytes:7602176
 21f8ff9f1daacd9133683bb4ea0f50a4 *./data/a-mp2.mp2
 95712 ./data/a-mp2.mp2
 6956f2c5185c4edbae648c614992a14b *./data/out.wav
-stddev:117.02 PSNR: 6.76 bytes:1054720
+stddev:9330.70 PSNR:16.92 bytes:527360
+stddev:4396.13 PSNR:23.46 bytes:526336
 d056da679e6d6682812fffb28a7f0db6 *./data/a-ac3.rm
 97983 ./data/a-ac3.rm
 2d081e0e1f2e9bd4514e9ac8ec41884c *./data/a-g726.wav
 24268 ./data/a-g726.wav
 a719ab6d47d8d601520edb13bf6136b4 *./data/out.wav
-stddev:134.28 PSNR: 5.56 bytes:96256
+stddev:8459.88 PSNR:17.77 bytes:48128
 bdc512b78e2ccb1d815aec08794650eb *./data/a-adpcm_ima.wav
 266288 ./data/a-adpcm_ima.wav
 1316b03da3bdc8df9785c7995e3c9b2a *./data/out.wav
-stddev:129.55 PSNR: 5.87 bytes:1054720
+stddev:13585.76 PSNR:13.66 bytes:527360
 d2eee867856d2bdb6d08e936d4ceec0c *./data/a-adpcm_ms.wav
 267308 ./data/a-adpcm_ms.wav
 91a84bb4f319a3a0bf0c0441b3d3a529 *./data/out.wav
-stddev: 73.79 PSNR:10.76 bytes:1054720
+stddev:1050.18 PSNR:35.89 bytes:527360

tests/regression.sh

@@ -110,7 +110,7 @@ do_ffmpeg()
     if [ $f = $raw_dst ] ; then
         $tiny_psnr $f $raw_ref >> $logfile
     elif [ $f = $pcm_dst ] ; then
-        $tiny_psnr $f $pcm_ref >> $logfile
+        $tiny_psnr $f $pcm_ref 2 >> $logfile
     else
         wc -c $f >> $logfile
     fi
@@ -458,6 +458,7 @@ do_ffmpeg $file -y -ab 128 -ac 2 -ar 44100 -f s16le -i $pcm_src $file
 
 # mp2 decoding
 do_ffmpeg $pcm_dst -y -i $file -f wav $pcm_dst 
+$tiny_psnr $pcm_dst $pcm_ref 2 1924 >> $logfile
 fi
 
 ###################################

tests/rotozoom.regression.ref

@@ -126,18 +126,19 @@ stddev:  3.43 PSNR:37.39 bytes:7602176
 21f8ff9f1daacd9133683bb4ea0f50a4 *./data/a-mp2.mp2
 95712 ./data/a-mp2.mp2
 6956f2c5185c4edbae648c614992a14b *./data/out.wav
-stddev:117.02 PSNR: 6.76 bytes:1054720
+stddev:9330.70 PSNR:16.92 bytes:527360
+stddev:4396.13 PSNR:23.46 bytes:526336
 d056da679e6d6682812fffb28a7f0db6 *./data/a-ac3.rm
 97983 ./data/a-ac3.rm
 2d081e0e1f2e9bd4514e9ac8ec41884c *./data/a-g726.wav
 24268 ./data/a-g726.wav
 a719ab6d47d8d601520edb13bf6136b4 *./data/out.wav
-stddev:134.28 PSNR: 5.56 bytes:96256
+stddev:8459.88 PSNR:17.77 bytes:48128
 bdc512b78e2ccb1d815aec08794650eb *./data/a-adpcm_ima.wav
 266288 ./data/a-adpcm_ima.wav
 1316b03da3bdc8df9785c7995e3c9b2a *./data/out.wav
-stddev:129.55 PSNR: 5.87 bytes:1054720
+stddev:13585.76 PSNR:13.66 bytes:527360
 d2eee867856d2bdb6d08e936d4ceec0c *./data/a-adpcm_ms.wav
 267308 ./data/a-adpcm_ms.wav
 91a84bb4f319a3a0bf0c0441b3d3a529 *./data/out.wav
-stddev: 73.79 PSNR:10.76 bytes:1054720
+stddev:1050.18 PSNR:35.89 bytes:527360