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d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
244 lines
9.4 KiB
C++
244 lines
9.4 KiB
C++
/**************************************************************************/
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/* test_audio_stream_wav.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef TEST_AUDIO_STREAM_WAV_H
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#define TEST_AUDIO_STREAM_WAV_H
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#include "core/math/math_defs.h"
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#include "core/math/math_funcs.h"
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#include "scene/resources/audio_stream_wav.h"
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#include "tests/test_macros.h"
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#ifdef TOOLS_ENABLED
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#include "core/io/resource_loader.h"
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#include "editor/import/resource_importer_wav.h"
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#endif
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namespace TestAudioStreamWAV {
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// Default wav rate for test cases.
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constexpr float WAV_RATE = 44100;
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/* Default wav count for test cases. 1 second of audio is used so that the file can be listened
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to manually if needed. */
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constexpr int WAV_COUNT = WAV_RATE;
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float gen_wav(float frequency, float wav_rate, int wav_number) {
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// formula for generating a sin wave with given frequency.
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return Math::sin((Math_TAU * frequency / wav_rate) * wav_number);
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}
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/* Generates a 440Hz sin wave in channel 0 (mono channel or left stereo channel)
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* and a 261.63Hz wave in channel 1 (right stereo channel).
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* These waves correspond to the music notes A4 and C4 respectively.
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*/
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Vector<uint8_t> gen_pcm8_test(float wav_rate, int wav_count, bool stereo) {
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Vector<uint8_t> buffer;
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buffer.resize(stereo ? wav_count * 2 : wav_count);
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uint8_t *write_ptr = buffer.ptrw();
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for (int i = 0; i < buffer.size(); i++) {
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float wav;
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if (stereo) {
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if (i % 2 == 0) {
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wav = gen_wav(440, wav_rate, i / 2);
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} else {
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wav = gen_wav(261.63, wav_rate, i / 2);
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}
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} else {
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wav = gen_wav(440, wav_rate, i);
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}
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// Map sin wave to full range of 8-bit values.
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uint8_t wav_8bit = Math::fast_ftoi(((wav + 1) / 2) * UINT8_MAX);
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// Unlike the .wav format, AudioStreamWAV expects signed 8-bit wavs.
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uint8_t wav_8bit_signed = wav_8bit - (INT8_MAX + 1);
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write_ptr[i] = wav_8bit_signed;
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}
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return buffer;
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}
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// Same as gen_pcm8_test but with 16-bit wavs.
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Vector<uint8_t> gen_pcm16_test(float wav_rate, int wav_count, bool stereo) {
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Vector<uint8_t> buffer;
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buffer.resize(stereo ? wav_count * 4 : wav_count * 2);
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uint8_t *write_ptr = buffer.ptrw();
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for (int i = 0; i < buffer.size() / 2; i++) {
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float wav;
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if (stereo) {
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if (i % 2 == 0) {
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wav = gen_wav(440, wav_rate, i / 2);
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} else {
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wav = gen_wav(261.63, wav_rate, i / 2);
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}
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} else {
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wav = gen_wav(440, wav_rate, i);
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}
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// Map sin wave to full range of 16-bit values.
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uint16_t wav_16bit = Math::fast_ftoi(((wav + 1) / 2) * UINT16_MAX);
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// The .wav format expects wavs larger than 8 bits to be signed.
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uint16_t wav_16bit_signed = wav_16bit - (INT16_MAX + 1);
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encode_uint16(wav_16bit_signed, write_ptr + (i * 2));
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}
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return buffer;
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}
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void run_test(String file_name, AudioStreamWAV::Format data_format, bool stereo, float wav_rate, float wav_count) {
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String save_path = OS::get_singleton()->get_cache_path().path_join(file_name);
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Vector<uint8_t> test_data;
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if (data_format == AudioStreamWAV::FORMAT_8_BITS) {
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test_data = gen_pcm8_test(wav_rate, wav_count, stereo);
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} else {
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test_data = gen_pcm16_test(wav_rate, wav_count, stereo);
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}
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Ref<AudioStreamWAV> stream = memnew(AudioStreamWAV);
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stream->set_mix_rate(wav_rate);
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CHECK(stream->get_mix_rate() == wav_rate);
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stream->set_format(data_format);
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CHECK(stream->get_format() == data_format);
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stream->set_stereo(stereo);
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CHECK(stream->is_stereo() == stereo);
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stream->set_data(test_data);
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CHECK(stream->get_data() == test_data);
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SUBCASE("Stream length is computed properly") {
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CHECK(stream->get_length() == doctest::Approx(double(wav_count / wav_rate)));
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}
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SUBCASE("Stream can be saved as .wav") {
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REQUIRE(stream->save_to_wav(save_path) == OK);
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Error error;
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Ref<FileAccess> wav_file = FileAccess::open(save_path, FileAccess::READ, &error);
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REQUIRE(error == OK);
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#if TOOLS_ENABLED
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// The WAV importer can be used if enabled to check that the saved file is valid.
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Ref<ResourceImporterWAV> wav_importer = memnew(ResourceImporterWAV);
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List<ResourceImporter::ImportOption> options_list;
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wav_importer->get_import_options("", &options_list);
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HashMap<StringName, Variant> options_map;
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for (const ResourceImporter::ImportOption &E : options_list) {
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options_map[E.option.name] = E.default_value;
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}
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REQUIRE(wav_importer->import(save_path, save_path, options_map, nullptr) == OK);
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String load_path = save_path + "." + wav_importer->get_save_extension();
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Ref<AudioStreamWAV> loaded_stream = ResourceLoader::load(load_path, "AudioStreamWAV", ResourceFormatImporter::CACHE_MODE_IGNORE, &error);
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REQUIRE(error == OK);
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CHECK(loaded_stream->get_format() == stream->get_format());
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CHECK(loaded_stream->get_loop_mode() == stream->get_loop_mode());
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CHECK(loaded_stream->get_loop_begin() == stream->get_loop_begin());
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CHECK(loaded_stream->get_loop_end() == stream->get_loop_end());
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CHECK(loaded_stream->get_mix_rate() == stream->get_mix_rate());
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CHECK(loaded_stream->is_stereo() == stream->is_stereo());
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CHECK(loaded_stream->get_length() == stream->get_length());
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CHECK(loaded_stream->is_monophonic() == stream->is_monophonic());
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CHECK(loaded_stream->get_data() == stream->get_data());
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#endif
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}
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}
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TEST_CASE("[AudioStreamWAV] Mono PCM8 format") {
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run_test("test_pcm8_mono.wav", AudioStreamWAV::FORMAT_8_BITS, false, WAV_RATE, WAV_COUNT);
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}
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TEST_CASE("[AudioStreamWAV] Mono PCM16 format") {
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run_test("test_pcm16_mono.wav", AudioStreamWAV::FORMAT_16_BITS, false, WAV_RATE, WAV_COUNT);
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}
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TEST_CASE("[AudioStreamWAV] Stereo PCM8 format") {
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run_test("test_pcm8_stereo.wav", AudioStreamWAV::FORMAT_8_BITS, true, WAV_RATE, WAV_COUNT);
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}
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TEST_CASE("[AudioStreamWAV] Stereo PCM16 format") {
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run_test("test_pcm16_stereo.wav", AudioStreamWAV::FORMAT_16_BITS, true, WAV_RATE, WAV_COUNT);
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}
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TEST_CASE("[AudioStreamWAV] Alternate mix rate") {
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run_test("test_pcm16_stereo_38000Hz.wav", AudioStreamWAV::FORMAT_16_BITS, true, 38000, 38000);
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}
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TEST_CASE("[AudioStreamWAV] save_to_wav() adds '.wav' file extension automatically") {
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String save_path = OS::get_singleton()->get_cache_path().path_join("test_wav_extension");
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Vector<uint8_t> test_data = gen_pcm8_test(WAV_RATE, WAV_COUNT, false);
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Ref<AudioStreamWAV> stream = memnew(AudioStreamWAV);
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stream->set_data(test_data);
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REQUIRE(stream->save_to_wav(save_path) == OK);
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Error error;
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Ref<FileAccess> wav_file = FileAccess::open(save_path + ".wav", FileAccess::READ, &error);
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CHECK(error == OK);
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}
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TEST_CASE("[AudioStreamWAV] Default values") {
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Ref<AudioStreamWAV> stream = memnew(AudioStreamWAV);
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CHECK(stream->get_format() == AudioStreamWAV::FORMAT_8_BITS);
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CHECK(stream->get_loop_mode() == AudioStreamWAV::LOOP_DISABLED);
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CHECK(stream->get_loop_begin() == 0);
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CHECK(stream->get_loop_end() == 0);
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CHECK(stream->get_mix_rate() == 44100);
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CHECK(stream->is_stereo() == false);
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CHECK(stream->get_length() == 0);
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CHECK(stream->is_monophonic() == false);
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CHECK(stream->get_data() == Vector<uint8_t>{});
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CHECK(stream->get_stream_name() == "");
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}
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TEST_CASE("[AudioStreamWAV] Save empty file") {
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run_test("test_empty.wav", AudioStreamWAV::FORMAT_8_BITS, false, WAV_RATE, 0);
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}
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TEST_CASE("[AudioStreamWAV] Saving IMA ADPCM is not supported") {
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String save_path = OS::get_singleton()->get_cache_path().path_join("test_adpcm.wav");
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Ref<AudioStreamWAV> stream = memnew(AudioStreamWAV);
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stream->set_format(AudioStreamWAV::FORMAT_IMA_ADPCM);
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ERR_PRINT_OFF;
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CHECK(stream->save_to_wav(save_path) == ERR_UNAVAILABLE);
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ERR_PRINT_ON;
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}
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} // namespace TestAudioStreamWAV
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#endif // TEST_AUDIO_STREAM_WAV_H
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