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* format-tests: TESTS: add a few more checks to existing tests TESTS: run testrawconverter in make check Add test for RawConverter. TESTS: avoid snr output in quiet mode TESTS: check snr in wav pipe test to catch conversion errors TESTS: add test for wav-pipe format Add helpers to audiowmark for better tests. Signed-off-by: Stefan Westerfeld <[email protected]>
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright (C) 2018-2024 Stefan Westerfeld | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
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| #include <string> | ||
| #include <vector> | ||
| #include <assert.h> | ||
| #include <math.h> | ||
| #include <gcrypt.h> | ||
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| #include <set> | ||
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| #include "rawconverter.hh" | ||
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| using std::vector; | ||
| using std::string; | ||
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| string | ||
| hash_bytes (vector<unsigned char>& bytes) | ||
| { | ||
| string result; | ||
| std::array<unsigned char, 20> hash; | ||
| gcry_md_hash_buffer (GCRY_MD_SHA1, hash.data(), bytes.data(), bytes.size()); | ||
| for (auto ch : hash) | ||
| result += string_printf ("%02x", ch); | ||
| return result; | ||
| } | ||
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| int | ||
| main (int argc, char **argv) | ||
| { | ||
| std::set<string> hashes; | ||
| Error error; | ||
| RawFormat format; | ||
| uint64_t K = 33452759; // prime | ||
| vector<float> in_samples (K), out_samples (K); | ||
| vector<unsigned char> bytes (K * 4); | ||
| for (uint64_t k = 0; k <= K; k++) | ||
| in_samples[k] = (-1 + double (2 * k) / K); | ||
| for (auto bit_depth : { 16, 24, 32 }) | ||
| { | ||
| for (auto encoding : { RawFormat::SIGNED, RawFormat::UNSIGNED }) | ||
| { | ||
| for (auto endian : { RawFormat::LITTLE, RawFormat::BIG }) | ||
| { | ||
| format.set_bit_depth (bit_depth); | ||
| format.set_encoding (encoding); | ||
| format.set_endian (endian); | ||
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| RawConverter *converter = RawConverter::create (format, error); | ||
| if (error) | ||
| { | ||
| printf ("error: %s\n", error.message()); | ||
| return 1; | ||
| } | ||
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| std::fill (bytes.begin(), bytes.end(), 0); | ||
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| double time1 = get_time(); | ||
| converter->to_raw (in_samples.data(), bytes.data(), in_samples.size()); | ||
| double time2 = get_time(); | ||
| converter->from_raw (bytes.data(), out_samples.data(), in_samples.size()); | ||
| double time3 = get_time(); | ||
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| double max_err = 0; | ||
| for (size_t i = 0; i < in_samples.size(); i++) | ||
| max_err = std::max (max_err, std::abs (double (in_samples[i]) - double (out_samples[i]))); | ||
| double ebits = log2 (max_err); | ||
| printf ("%s %d %s endian %f", | ||
| format.encoding() == RawFormat::SIGNED ? "signed" : "unsigned", | ||
| format.bit_depth(), | ||
| format.endian() == RawFormat::LITTLE ? "little" : "big", | ||
| ebits); | ||
| double min_ebits = -format.bit_depth() + 0.9; | ||
| double max_ebits = -format.bit_depth() + 1; | ||
| double ns_per_sample_to = (time2 - time1) * 1e9 / K; | ||
| double ns_per_sample_from = (time3 - time2) * 1e9 / K; | ||
| printf (" (should be in [%.2f,%.2f]) - to raw: %f ns/sample - from raw: %f ns/sample\n", | ||
| min_ebits, max_ebits, | ||
| ns_per_sample_to, ns_per_sample_from); | ||
| assert (ebits <= max_ebits && ebits >= min_ebits); | ||
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| /* every raw converted buffer should be different */ | ||
| string hash = hash_bytes (bytes); | ||
| assert (hashes.count (hash) == 0); | ||
| hashes.insert (hash); | ||
| } | ||
| } | ||
| printf ("\n"); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| #!/bin/bash | ||
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| source test-common.sh | ||
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| for TEST in testrawconverter | ||
| do | ||
| if [ "x$Q" == "x1" ] && [ -z "$V" ]; then | ||
| $TOP_BUILDDIR/src/$TEST > /dev/null | ||
| else | ||
| $TOP_BUILDDIR/src/$TEST | ||
| fi | ||
| done | ||
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| exit 0 |
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| Original file line number | Diff line number | Diff line change |
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| #!/bin/bash | ||
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| source test-common.sh | ||
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| 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 | ||
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| for BITS in 16 24 | ||
| do | ||
| audiowmark test-gen-noise --bits $BITS $IN_WAV 200 44100 | ||
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| [ "x$BITS" == "x$(audiowmark test-info $IN_WAV bit_depth)" ] || die "generated input bit depth is not correct" | ||
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| cat $IN_WAV | audiowmark_add --test-key 1 --test-no-limiter --format wav-pipe - - $TEST_MSG > $OUT1_WAV || die "watermark from pipe failed" | ||
| cat $OUT1_WAV | audiowmark_add --test-key 2 --test-no-limiter --format wav-pipe - - $TEST_MSG > $OUT2_WAV || die "watermark from pipe failed" | ||
| cat $OUT2_WAV | audiowmark_add --test-key 3 --test-no-limiter --format wav-pipe - - $TEST_MSG > $OUT3_WAV || die "watermark from pipe failed" | ||
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| check_length $IN_WAV $OUT1_WAV | ||
| check_length $IN_WAV $OUT2_WAV | ||
| check_length $IN_WAV $OUT3_WAV | ||
| check_snr $IN_WAV $OUT1_WAV 32 | ||
| check_snr $IN_WAV $OUT2_WAV 29 | ||
| check_snr $IN_WAV $OUT3_WAV 27 | ||
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| 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 $TEST_MSG | ||
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| # for wav-pipe format: 16 bit input should produce 16 bit output; 24 bit input should produce 32 bit output | ||
| BTEST=$BITS:$(audiowmark test-info $OUT3_WAV bit_depth) | ||
| [[ "$BTEST" =~ ^(16:16|24:32)$ ]] || die "unexpected input/output bit depth $BTEST" | ||
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| rm $IN_WAV $OUT1_WAV $OUT2_WAV $OUT3_WAV | ||
| done | ||
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| exit 0 |