#pragma once

#include <functional>
#include <vector>

class AudioInterface {
public:
    using AudioCallback = std::function<void(const std::vector<char>&)>;

    virtual ~AudioInterface() = default;

    // Starts the audio interface. The callback will be invoked with raw 16-bit PCM mono samples at 16kHz.
    virtual void start(AudioCallback inputCallback) = 0;

    // Stops audio I/O and releases underlying resources.
    virtual void stop() = 0;

    // Play audio to the user; audio is 16-bit PCM mono 16kHz.
    virtual void output(const std::vector<char>& audio) = 0;

    // Immediately stop any buffered / ongoing output.
    virtual void interrupt() = 0;
};