af_hdcd: more FATE tests

Additional/Modified FATE tests improve code coverage from 63.7% to 98.1%.

Changed fate-suite sample files:
* filter/hdcd-mix.flac (958K) added. It is a much better test than
  filter/hdcd.flac (910K), which is now unused, but can't be removed.
* filter/hdcd-fake20bit.flac (168K) added. It is the first second of
  filter/hdcd.flac, with the 16-bit LSB copied into bit 20 of a 24-bit
  stream. There isn't an actual non-16-bit HDCD sample available to test.
Signed-off-by: Burt P <pburt0@gmail.com>

tests/fate/filter-audio.mak

@@ -255,17 +255,55 @@ fate-filter-volume: CMD = md5 -i $(SRC) -af aperms=random,volume=precision=fixed
 fate-filter-volume: CMP = oneline
 fate-filter-volume: REF = 4d6ba75ef3e32d305d066b9bc771d6f4
 
-FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd
-fate-filter-hdcd: SRC = $(TARGET_SAMPLES)/filter/hdcd.flac
-fate-filter-hdcd: CMD = md5 -i $(SRC) -af hdcd -f s24le
-fate-filter-hdcd: CMP = oneline
-fate-filter-hdcd: REF = 5db465a58d2fd0d06ca944b883b33476
-
-FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-analyze
-fate-filter-hdcd-analyze: SRC = $(TARGET_SAMPLES)/filter/hdcd.flac
-fate-filter-hdcd-analyze: CMD = md5 -i $(SRC) -af hdcd=analyze_mode=pe -f s24le
-fate-filter-hdcd-analyze: CMP = oneline
-fate-filter-hdcd-analyze: REF = 6e39dc4629c1e84321c0d8bc069b42f6
+# hdcd-mix.flac is a mix of three different sources which are interesting for various reasons:
+# first 5 seconds uses packet format A and max LLE of -7.0db
+# second 5 seconds uses packet format B and has a gain mismatch between channels
+# last 10 seconds is not HDCD but has a coincidental HDCD packet, it needs to be 10 seconds because it also tests the cdt expiration
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-mix
+fate-filter-hdcd-mix: SRC = $(TARGET_SAMPLES)/filter/hdcd-mix.flac
+fate-filter-hdcd-mix: CMD = md5 -i $(SRC) -af hdcd -f s24le
+fate-filter-hdcd-mix: CMP = oneline
+fate-filter-hdcd-mix: REF = e7079913e90c124460cdbc712df5b84c
+
+# output will be different because of the gain mismatch in the second and third parts
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-mix-psoff
+fate-filter-hdcd-mix-psoff: SRC = $(TARGET_SAMPLES)/filter/hdcd-mix.flac
+fate-filter-hdcd-mix-psoff: CMD = md5 -i $(SRC) -af hdcd=process_stereo=false -f s24le
+fate-filter-hdcd-mix-psoff: CMP = oneline
+fate-filter-hdcd-mix-psoff: REF = bd0e81fe17696b825ee3515ab928e6bb
+
+# test the different analyze modes
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-analyze-pe
+fate-filter-hdcd-analyze-pe: SRC = $(TARGET_SAMPLES)/filter/hdcd-mix.flac
+fate-filter-hdcd-analyze-pe: CMD = md5 -i $(SRC) -af hdcd=analyze_mode=pe -f s24le
+fate-filter-hdcd-analyze-pe: CMP = oneline
+fate-filter-hdcd-analyze-pe: REF = bb83e97bbd0064b9b1c0ef2f2c8f0c77
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-analyze-lle
+fate-filter-hdcd-analyze-lle: SRC = $(TARGET_SAMPLES)/filter/hdcd-mix.flac
+fate-filter-hdcd-analyze-lle: CMD = md5 -i $(SRC) -af hdcd=analyze_mode=lle -f s24le
+fate-filter-hdcd-analyze-lle: CMP = oneline
+fate-filter-hdcd-analyze-lle: REF = 121cc4a681aa0caef5c664fece7a3ddc
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-analyze-cdt
+fate-filter-hdcd-analyze-cdt: SRC = $(TARGET_SAMPLES)/filter/hdcd-mix.flac
+fate-filter-hdcd-analyze-cdt: CMD = md5 -i $(SRC) -af hdcd=analyze_mode=cdt -f s24le
+fate-filter-hdcd-analyze-cdt: CMP = oneline
+fate-filter-hdcd-analyze-cdt: REF = 12136e6a00dd532994f6edcc347af1d4
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-analyze-tgm
+fate-filter-hdcd-analyze-tgm: SRC = $(TARGET_SAMPLES)/filter/hdcd-mix.flac
+fate-filter-hdcd-analyze-tgm: CMD = md5 -i $(SRC) -af hdcd=analyze_mode=tgm -f s24le
+fate-filter-hdcd-analyze-tgm: CMP = oneline
+fate-filter-hdcd-analyze-tgm: REF = a3c39f62e9b9b42c9c440d0045d5fb2f
+# the two additional analyze modes from libhdcd
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-analyze-ltgm
+fate-filter-hdcd-analyze-ltgm: SRC = $(TARGET_SAMPLES)/filter/hdcd-mix.flac
+fate-filter-hdcd-analyze-ltgm: CMD = md5 -i $(SRC) -af hdcd=analyze_mode=lle:process_stereo=false -f s24le
+fate-filter-hdcd-analyze-ltgm: CMP = oneline
+fate-filter-hdcd-analyze-ltgm: REF = 76ffd86b762b5a93332039f27e4c0c0e
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-analyze-pel
+fate-filter-hdcd-analyze-pel: SRC = $(TARGET_SAMPLES)/filter/hdcd-mix.flac
+fate-filter-hdcd-analyze-pel: CMD = md5 -i $(SRC) -af hdcd=analyze_mode=pe:force_pe=true -f s24le
+fate-filter-hdcd-analyze-pel: CMP = oneline
+fate-filter-hdcd-analyze-pel: REF = 8156c5a3658d789ab46447d62151f5e9
 
 FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-false-positive
 fate-filter-hdcd-false-positive: SRC = $(TARGET_SAMPLES)/filter/hdcd-false-positive.flac
@@ -279,6 +317,30 @@ fate-filter-hdcd-detect-errors: CMD = md5 -i $(SRC) -af hdcd -f s24le
 fate-filter-hdcd-detect-errors: CMP = grep
 fate-filter-hdcd-detect-errors: REF = detectable errors: [1-9]
 
+# 20bit HDCD
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S32LE, PCM_S32LE) += fate-filter-hdcd-20bit
+fate-filter-hdcd-20bit: SRC = $(TARGET_SAMPLES)/filter/hdcd-fake20bit.flac
+fate-filter-hdcd-20bit: CMD = md5 -i $(SRC) -af hdcd=bits_per_sample=20 -f s32le
+fate-filter-hdcd-20bit: CMP = oneline
+fate-filter-hdcd-20bit: REF = 365ded883a4a92483b15b69babc81390
+
+# non-hdcd tests of different input formats for code coverage
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, WAV, PCM_S16LE, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-mono
+fate-filter-hdcd-mono: SRC = $(TARGET_SAMPLES)/audiomatch/tones_44100_mono.wav
+fate-filter-hdcd-mono: CMD = md5 -i $(SRC) -af hdcd -f s24le
+fate-filter-hdcd-mono: CMP = oneline
+fate-filter-hdcd-mono: REF = f51b114b20728e6a463a9491c643d166
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, WV, WAVPACK, PCM_S32LE, PCM_S32LE) += fate-filter-hdcd-s16p
+fate-filter-hdcd-s16p: SRC = $(TARGET_SAMPLES)/wavpack/lossless/16bit-partial.wv
+fate-filter-hdcd-s16p: CMD = md5 -i $(SRC) -af hdcd -f s32le
+fate-filter-hdcd-s16p: CMP = oneline
+fate-filter-hdcd-s16p: REF = 4e767f436b891ac59810a8b2b1d7e96b
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, WV, WAVPACK, PCM_S32LE, PCM_S32LE) += fate-filter-hdcd-s32p
+fate-filter-hdcd-s32p: SRC = $(TARGET_SAMPLES)/wavpack/lossless/24bit-partial.wv
+fate-filter-hdcd-s32p: CMD = md5 -i $(SRC) -af hdcd -f s32le
+fate-filter-hdcd-s32p: CMP = oneline
+fate-filter-hdcd-s32p: REF = 0c5513e83eedaa10ab6fac9ddc173cf5
+
 FATE_AFILTER-yes += fate-filter-formats
 fate-filter-formats: libavfilter/tests/formats$(EXESUF)
 fate-filter-formats: CMD = run libavfilter/tests/formats