1 files changed, 46 insertions, 0 deletions
diff --git a/test/test_compression.sh b/test/test_compression.sh
new file mode 100755
index 0000000..60c2399
--- /dev/null
+++ b/test/test_compression.sh
@@ -0,0 +1,46 @@
+#!/bin/sh -e
+
+#  FLAC - Free Lossless Audio Codec
+#  Copyright (C) 2012-2023  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.
+
+. ./common.sh
+
+PATH="$(pwd)/../src/flac:$PATH"
+
+printf "Using FLAC binary : %s\n" "$(which flac)"
+
+date="$(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 ${size}."
+		exit 1
+		fi
+	# Need this because OSX's 'wc -c' returns a number with leading whitespace.
+	last_size=$((size+10))
+	last_k=${k}
+	rm -f ${fname}
+	done