audio_clip_asset.h

#pragma once
 
#include <cstdint>
#include <memory>
#include <vector>
 
#include "resource/resource.h"
#include "resource/resource_handle.h"
 
namespace Vkm::Engine {

class ClipSamples {
    public:
        ClipSamples() = default;

        explicit ClipSamples(std::vector<int16_t> samples);
 
        ~ClipSamples() = default;
 
        ClipSamples(const ClipSamples& other) = default;
        ClipSamples& operator=(const ClipSamples& other) = default;
 
        ClipSamples(ClipSamples && other) = default;
        ClipSamples& operator=(ClipSamples && other) = default;
 
    public:
        explicit operator bool() const noexcept { return m_samples != nullptr; }
 
        const std::vector<int16_t>& operator*() const { return *m_samples; }
        const std::vector<int16_t>* operator->() const { return m_samples.get(); }
 
    private:
        std::shared_ptr<const std::vector<int16_t>> m_samples;
};

struct AudioClipAsset : public Resource {
    uint32_t sampleRate = 0;  
    uint32_t channels   = 0;  
 
    ClipSamples samples;  

    size_t sampleCount() const { return samples ? samples->size() : 0; }

    uint64_t frameCount() const { return channels == 0 ? 0 : sampleCount() / channels; }

    float duration() const {
        return sampleRate == 0 ? 0.0f : static_cast<float>(frameCount()) / static_cast<float>(sampleRate);
    }
};
 
using AudioClipHandle = Handle<AudioClipAsset>;
 
} // namespace Vkm::Engine