TESTS: add test for wav-pipe format

Signed-off-by: Stefan Westerfeld <stefan@space.twc.de>

tests/Makefile.am

 CHECKS = detect-speed-test block-decoder-test clip-decoder-test \
        pipe-test short-payload-test sync-test sample-rate-test \
-       key-test
+       key-test wav-pipe-test
 
 if COND_WITH_FFMPEG
 CHECKS += hls-test
@@ -8,7 +8,7 @@ endif
 
 EXTRA_DIST = detect-speed-test.sh block-decoder-test.sh clip-decoder-test.sh \
        pipe-test.sh short-payload-test.sh sync-test.sh sample-rate-test.sh \
-       key-test.sh hls-test.sh
+       key-test.sh hls-test.sh wav-pipe-test.sh
 
 check: $(CHECKS)
 
@@ -24,6 +24,9 @@ clip-decoder-test:
 pipe-test:
 	Q=1 $(top_srcdir)/tests/pipe-test.sh
 
+wav-pipe-test:
+	Q=1 $(top_srcdir)/tests/wav-pipe-test.sh
+
 short-payload-test:
 	Q=1 $(top_srcdir)/tests/short-payload-test.sh
 

tests/test-common.sh.in

@@ -41,3 +41,12 @@ audiowmark_cmp()
   fi
   $AUDIOWMARK --strict cmp "$@" > $AUDIOWMARK_OUT || die "failed to detect watermark $@"
 }
+
+check_length()
+{
+  local in1=$(audiowmark test-info $1 frames) || die "error detecting length of $1"
+  local in2=$(audiowmark test-info $2 frames) || die "error detecting length of $2"
+
+  [ "x$in1" != "x" ] || die "length of '$1' could not be detected"
+  [ "x$in1" == "x$in2" ] || die "length of '$1' ($in1) and '$2' ($in2) differs"
+}

tests/wav-pipe-test.sh

+#!/bin/bash
+
+source test-common.sh
+
+IN_WAV=wav-pipe-test.wav
+OUT1_WAV=wav-pipe-test-out1.wav
+OUT2_WAV=wav-pipe-test-out2.wav
+OUT3_WAV=wav-pipe-test-out3.wav
+
+for BITS in 16 24
+do
+  audiowmark test-gen-noise --bits $BITS $IN_WAV 200 44100
+
+  [ "x$BITS" == "x$(audiowmark test-info $IN_WAV bit_depth)" ] || die "generated input bit depth is not correct"
+
+  cat $IN_WAV   | audiowmark_add --test-key 1 --format wav-pipe - - $TEST_MSG > $OUT1_WAV || die "watermark from pipe failed"
+  cat $OUT1_WAV | audiowmark_add --test-key 2 --format wav-pipe - - $TEST_MSG > $OUT2_WAV || die "watermark from pipe failed"
+  cat $OUT2_WAV | audiowmark_add --test-key 3 --format wav-pipe - - $TEST_MSG > $OUT3_WAV || die "watermark from pipe failed"
+
+  check_length $IN_WAV $OUT1_WAV
+  check_length $IN_WAV $OUT2_WAV
+  check_length $IN_WAV $OUT3_WAV
+
+  audiowmark_cmp --expect-matches 0 $OUT3_WAV $TEST_MSG
+  audiowmark_cmp --expect-matches 5 --test-key 1 $OUT3_WAV $TEST_MSG
+  audiowmark_cmp --expect-matches 5 --test-key 2 $OUT3_WAV $TEST_MSG
+  audiowmark_cmp --expect-matches 5 --test-key 3 $OUT3_WAV $TEST_MSG
+
+  # for wav-pipe format: 16 bit input should produce 16 bit output; 24 bit input should produce 32 bit output
+  BTEST=$BITS:$(audiowmark test-info $OUT3_WAV bit_depth)
+  [[ "$BTEST" =~ ^(16:16|24:32)$ ]] || die "unexpected input/output bit depth $BTEST"
+
+  rm $IN_WAV $OUT1_WAV $OUT2_WAV $OUT3_WAV
+done
+
+exit 0