ASoundResampler.h

/*
 * AUI Framework - Declarative UI toolkit for modern C++20
 * Copyright (C) 2020-2025 Alex2772 and Contributors
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * 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/.
 */
 
#pragma once
 
#include <AUI/Audio/ISoundInputStream.h>
#include <AUI/Audio/ACompileTimeSoundResampler.h>
#include <AUI/Audio/VolumeLevel.h>
 
class API_AUI_AUDIO IAudioPlayer;
 
namespace aui::audio::impl {
   class ResamplerBase {
   public:
       virtual ~ResamplerBase() = default;
       virtual size_t resample(std::span<std::byte>, aui::audio::VolumeLevel volume) = 0;
   };
}

class API_AUI_AUDIO ASoundResampler final : public ISoundInputStream {
public:
   using IInputStream::read;
 
   explicit ASoundResampler(_<ISoundInputStream> sourceStream) noexcept;
 
   size_t read(char* dst, size_t size) override;
 
   AAudioFormat info() override;
 
   void setVolume(aui::audio::VolumeLevel volume) noexcept;
 
private:
   _<ISoundInputStream> mSourceStream;
   _unique<aui::audio::impl::ResamplerBase> mResampler;
   aui::audio::VolumeLevel mVolume = 256;
};

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