Files
flac/test/test_compression.sh
Martijn van Beurden 3d800a5775 Make test_compression a little more forgiving
The retune of compression levels makes this test fail. This is due
to a few approximations used in the encoder that determine which
LP coefficient should result in the smallest file. Differences are
usually very small, but in my case this resulted in compression
level 6 giving a 3 byte bigger file.

This patch lets the compression test pass even if the a compression
level results in a file that is up to 10 byte larger than the
previous level

Signed-off-by: Erik de Castro Lopo <erikd@mega-nerd.com>
2014-11-11 06:20:08 -08:00

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#!/bin/bash -e
# FLAC - Free Lossless Audio Codec
# Copyright (C) 2012 Xiph.Org Foundation
#
# This file is part the FLAC project. FLAC is comprised of several
# components distributed under different licenses. The codec libraries
# are distributed under Xiph.Org's BSD-like license (see the file
# COPYING.Xiph in this distribution). All other programs, libraries, and
# plugins are distributed under the GPL (see COPYING.GPL). The documentation
# is distributed under the Gnu FDL (see COPYING.FDL). Each file in the
# FLAC distribution contains at the top the terms under which it may be
# distributed.
#
# Since this particular file is relevant to all components of FLAC,
# it may be distributed under the Xiph.Org license, which is the least
# restrictive of those mentioned above. See the file COPYING.Xiph in this
# distribution.
source common.sh
PATH=`pwd`/../src/flac:$PATH
echo "Using FLAC binary :" $(which flac)
date=`date "+%Y%m%dT%H%M%S"`
fname="comp${date}.flac"
last_k=0
last_size=$(wc -c < noisy-sine.wav)
echo "Original file size ${last_size} bytes."
for k in 0 1 2 3 4 5 6 7 8 ; do
flac${EXE} -${k} --silent noisy-sine.wav -o ${fname}
size=$(wc -c < ${fname})
echo "Compression level ${k}, file size ${size} bytes."
if test ${last_size} -lt ${size} ; then
echo "Error : Compression ${last_k} size $last_size >= compression $k size $size."
exit 1
fi
let last_size=${size}+10
last_k=${k}
rm -f ${fname}
done