SoundEngine.hpp

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#pragma once
 
#include "AudioData.hpp"
#include "SoundList.hpp"
#include "logger.hpp"
 
#include <portaudio.h>
 
#include <memory>
#include <vector>
#include <mutex>
 
#define PA_THROW_CHECK(expr, msg) \
{ \
    PaError err = expr; \
    if (err != paNoError) \
    { \
        throw std::runtime_error(std::string("Portaudio: ") + msg + " (" + std::string(Pa_GetErrorText(err)) + ")"); \
    } \
}
 
#define PA_WARNING_CHECK(expr, msg) \
{ \
    PaError err = expr; \
    if (err != paNoError) \
    { \
        LOG_WARNING(std::string("Portaudio: ") + msg + " (" + std::string(Pa_GetErrorText(err)) + ")"); \
    } \
}
 
namespace Sound
{
    struct Instance
    {
        Data *audio_data = nullptr;
        uint32_t cursor = 0;
        bool loop = false;
        bool ended = false;
    };
 
    class Engine
    {
 
    public:
 
        Engine();
        ~Engine();
 
        void playSound(const SoundName audio_index, bool loop = false);
 
    private:
 
        PaStream *m_stream = nullptr;
 
        std::vector<std::unique_ptr<Data>> m_audio_datas;
 
        std::mutex m_sound_instances_mutex;
        std::vector<Instance> m_sound_instances;
 
        friend int paCallback_stereo(
            const void *inputBuffer,
            void *outputBuffer,
            unsigned long framesPerBuffer,
            const PaStreamCallbackTimeInfo *timeInfo,
            PaStreamCallbackFlags statusFlags,
            void *userData
        );
    };
 
}