#ifndef __AUDIODRIVER_H__
#define __AUDIODRIVER_H__

#pragma once

#ifdef __cplusplus
extern "C" {
#endif

#define EVT_DRIVER_BASE				0x00001000
#define DRIVER_EVT_DTMF_RECV		(EVT_DRIVER_BASE + 0) // receive dtmf
#define DRIVER_EVT_DTMF_SENT		(EVT_DRIVER_BASE + 1) // send dtmf finished

typedef struct audiodriver_vtbl_t
{
	void (*process_frame)(void *self);
}audiodriver_vtbl_t;

typedef struct audiodriver_t audiodriver_t;
typedef struct audiocontext_t audiocontext_t;
typedef struct audioengine_t audioengine_t;

struct audiodriver_t
{
	audiodriver_vtbl_t *vtbl;
	void *user_data;
#ifdef _WIN32
	int (__stdcall *event_handler)(audiodriver_t* driver, void* user_data, int evt, int param1, int param2);
#else
	int (__attribute__((__stdcall))*event_handler)(audiodriver_t* driver, void* user_data, int evt, int param1, int param2);
#endif
	audioengine_t *engine;
	audiocontext_t *ctx;
};

void audiodriver_init(audioengine_t *engine, audiodriver_vtbl_t *vtbl, audiodriver_t *drv);
void audiodriver_raise_event(audiodriver_t *driver, int evt, int param1, int param2);

#ifdef __cplusplus
} // extern "C" {
#endif

#endif //__AUDIODRIVER_H__