From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- dom/media/gtest/TestAudioMixer.cpp | 174 +++++++++++++++++++++++++++++++++++++ 1 file changed, 174 insertions(+) create mode 100644 dom/media/gtest/TestAudioMixer.cpp (limited to 'dom/media/gtest/TestAudioMixer.cpp') diff --git a/dom/media/gtest/TestAudioMixer.cpp b/dom/media/gtest/TestAudioMixer.cpp new file mode 100644 index 0000000000..017ac960eb --- /dev/null +++ b/dom/media/gtest/TestAudioMixer.cpp @@ -0,0 +1,174 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "AudioMixer.h" +#include "gtest/gtest.h" + +using mozilla::AudioDataValue; +using mozilla::AudioSampleFormat; + +namespace audio_mixer { + +struct MixerConsumer : public mozilla::MixerCallbackReceiver { + /* In this test, the different audio stream and channels are always created to + * cancel each other. */ + void MixerCallback(AudioDataValue* aData, AudioSampleFormat aFormat, + uint32_t aChannels, uint32_t aFrames, + uint32_t aSampleRate) { + bool silent = true; + for (uint32_t i = 0; i < aChannels * aFrames; i++) { + if (aData[i] != 0.0) { + if (aFormat == mozilla::AUDIO_FORMAT_S16) { + fprintf(stderr, "Sample at %d is not silent: %d\n", i, + (short)aData[i]); + } else { + fprintf(stderr, "Sample at %d is not silent: %f\n", i, + (float)aData[i]); + } + silent = false; + } + } + ASSERT_TRUE(silent); + } +}; + +/* Helper function to give us the maximum and minimum value that don't clip, + * for a given sample format (integer or floating-point). */ +template +T GetLowValue(); + +template +T GetHighValue(); + +template <> +float GetLowValue() { + return -1.0; +} + +template <> +short GetLowValue() { + return -INT16_MAX; +} + +template <> +float GetHighValue() { + return 1.0; +} + +template <> +short GetHighValue() { + return INT16_MAX; +} + +void FillBuffer(AudioDataValue* aBuffer, uint32_t aLength, + AudioDataValue aValue) { + AudioDataValue* end = aBuffer + aLength; + while (aBuffer != end) { + *aBuffer++ = aValue; + } +} + +TEST(AudioMixer, Test) +{ + const uint32_t CHANNEL_LENGTH = 256; + const uint32_t AUDIO_RATE = 44100; + MixerConsumer consumer; + AudioDataValue a[CHANNEL_LENGTH * 2]; + AudioDataValue b[CHANNEL_LENGTH * 2]; + FillBuffer(a, CHANNEL_LENGTH, GetLowValue()); + FillBuffer(a + CHANNEL_LENGTH, CHANNEL_LENGTH, + GetHighValue()); + FillBuffer(b, CHANNEL_LENGTH, GetHighValue()); + FillBuffer(b + CHANNEL_LENGTH, CHANNEL_LENGTH, GetLowValue()); + + { + int iterations = 2; + mozilla::AudioMixer mixer; + mixer.AddCallback(WrapNotNull(&consumer)); + + fprintf(stderr, "Test AudioMixer constant buffer length.\n"); + + while (iterations--) { + mixer.Mix(a, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.Mix(b, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.FinishMixing(); + } + } + + { + mozilla::AudioMixer mixer; + mixer.AddCallback(WrapNotNull(&consumer)); + + fprintf(stderr, "Test AudioMixer variable buffer length.\n"); + + FillBuffer(a, CHANNEL_LENGTH / 2, GetLowValue()); + FillBuffer(a + CHANNEL_LENGTH / 2, CHANNEL_LENGTH / 2, + GetLowValue()); + FillBuffer(b, CHANNEL_LENGTH / 2, GetHighValue()); + FillBuffer(b + CHANNEL_LENGTH / 2, CHANNEL_LENGTH / 2, + GetHighValue()); + mixer.Mix(a, 2, CHANNEL_LENGTH / 2, AUDIO_RATE); + mixer.Mix(b, 2, CHANNEL_LENGTH / 2, AUDIO_RATE); + mixer.FinishMixing(); + FillBuffer(a, CHANNEL_LENGTH, GetLowValue()); + FillBuffer(a + CHANNEL_LENGTH, CHANNEL_LENGTH, + GetHighValue()); + FillBuffer(b, CHANNEL_LENGTH, GetHighValue()); + FillBuffer(b + CHANNEL_LENGTH, CHANNEL_LENGTH, + GetLowValue()); + mixer.Mix(a, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.Mix(b, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.FinishMixing(); + FillBuffer(a, CHANNEL_LENGTH / 2, GetLowValue()); + FillBuffer(a + CHANNEL_LENGTH / 2, CHANNEL_LENGTH / 2, + GetLowValue()); + FillBuffer(b, CHANNEL_LENGTH / 2, GetHighValue()); + FillBuffer(b + CHANNEL_LENGTH / 2, CHANNEL_LENGTH / 2, + GetHighValue()); + mixer.Mix(a, 2, CHANNEL_LENGTH / 2, AUDIO_RATE); + mixer.Mix(b, 2, CHANNEL_LENGTH / 2, AUDIO_RATE); + mixer.FinishMixing(); + } + + FillBuffer(a, CHANNEL_LENGTH, GetLowValue()); + FillBuffer(b, CHANNEL_LENGTH, GetHighValue()); + + { + mozilla::AudioMixer mixer; + mixer.AddCallback(WrapNotNull(&consumer)); + + fprintf(stderr, "Test AudioMixer variable channel count.\n"); + + mixer.Mix(a, 1, CHANNEL_LENGTH, AUDIO_RATE); + mixer.Mix(b, 1, CHANNEL_LENGTH, AUDIO_RATE); + mixer.FinishMixing(); + mixer.Mix(a, 1, CHANNEL_LENGTH, AUDIO_RATE); + mixer.Mix(b, 1, CHANNEL_LENGTH, AUDIO_RATE); + mixer.FinishMixing(); + mixer.Mix(a, 1, CHANNEL_LENGTH, AUDIO_RATE); + mixer.Mix(b, 1, CHANNEL_LENGTH, AUDIO_RATE); + mixer.FinishMixing(); + } + + { + mozilla::AudioMixer mixer; + mixer.AddCallback(WrapNotNull(&consumer)); + fprintf(stderr, "Test AudioMixer variable stream count.\n"); + + mixer.Mix(a, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.Mix(b, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.FinishMixing(); + mixer.Mix(a, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.Mix(b, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.Mix(a, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.Mix(b, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.FinishMixing(); + mixer.Mix(a, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.Mix(b, 2, CHANNEL_LENGTH, AUDIO_RATE); + mixer.FinishMixing(); + } +} + +} // namespace audio_mixer -- cgit v1.2.3