Player.h

#pragma once
#include "waveform_sdk/RefPointer.h"
#include "waveform_sdk/Waveform.h"

namespace wave
{
struct waveform_listener
{
	virtual void on_waveform(ref_ptr<waveform>) = 0;
	virtual void on_time(double t) = 0;
	virtual void on_duration(double t) = 0;
	virtual void on_location(playable_location const& loc) = 0;
	virtual void on_play() = 0;
	virtual void on_stop() = 0;
};

struct player : service_base
{
	virtual void register_waveform_listener(waveform_listener*) = 0;
	virtual void deregister_waveform_listener(waveform_listener*) = 0;
	virtual void enumerate_listeners(std::function<void (waveform_listener*)> f) const = 0;

	FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT(player)
};

// {BA1D0A2E-14E6-4DE6-AB6E-C64E8ED9FD26}
__declspec(selectany) const GUID player::class_guid = 
{ 0xba1d0a2e, 0x14e6, 0x4de6, { 0xab, 0x6e, 0xc6, 0x4e, 0x8e, 0xd9, 0xfd, 0x26 } };
}