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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /dom/media/gtest/AudioGenerator.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/media/gtest/AudioGenerator.h')
-rw-r--r--dom/media/gtest/AudioGenerator.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/dom/media/gtest/AudioGenerator.h b/dom/media/gtest/AudioGenerator.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 https://mozilla.org/MPL/2.0/. */
+
+#ifndef DOM_MEDIA_GTEST_AUDIO_GENERATOR_H_
+#define DOM_MEDIA_GTEST_AUDIO_GENERATOR_H_
+
+#include "AudioSegment.h"
+#include "prtime.h"
+#include "SineWaveGenerator.h"
+
+namespace mozilla {
+
+template <typename Sample>
+class AudioGenerator {
+ public:
+ AudioGenerator(uint32_t aChannels, uint32_t aSampleRate,
+ uint32_t aFrequency = 1000)
+ : mSampleRate(aSampleRate),
+ mFrequency(aFrequency),
+ mChannelCount(aChannels),
+ mGenerator(aSampleRate, aFrequency) {}
+
+ void Generate(mozilla::AudioSegment& aSegment, uint32_t aFrameCount) {
+ CheckedInt<size_t> bufferSize(sizeof(Sample));
+ bufferSize *= aFrameCount;
+ RefPtr<SharedBuffer> buffer = SharedBuffer::Create(bufferSize);
+ Sample* dest = static_cast<Sample*>(buffer->Data());
+ mGenerator.generate(dest, aFrameCount);
+ AutoTArray<const Sample*, 1> channels;
+ for (uint32_t i = 0; i < mChannelCount; ++i) {
+ channels.AppendElement(dest);
+ }
+ aSegment.AppendFrames(buffer.forget(), channels, aFrameCount,
+ PRINCIPAL_HANDLE_NONE);
+ }
+
+ void GenerateInterleaved(Sample* aSamples, uint32_t aFrameCount) {
+ mGenerator.generate(aSamples, aFrameCount, mChannelCount);
+ }
+
+ void SetChannelsCount(uint32_t aChannelCount) {
+ mChannelCount = aChannelCount;
+ }
+
+ uint32_t ChannelCount() const { return mChannelCount; }
+
+ static float Amplitude() {
+ return mozilla::SineWaveGenerator<Sample>::Amplitude();
+ }
+
+ const uint32_t mSampleRate;
+ const uint32_t mFrequency;
+
+ private:
+ uint32_t mChannelCount;
+ mozilla::SineWaveGenerator<Sample> mGenerator;
+};
+
+} // namespace mozilla
+
+#endif // DOM_MEDIA_GTEST_AUDIO_GENERATOR_H_