myvtm/Other/libaudiomgr/iaudiomgrinterface.h

#pragma  once

#ifdef _WIN32
#ifdef LIBAUDIOMGR_EXPORTS
#define LIBAUDIOMGR_API __declspec(dllexport)
#else
#define LIBAUDIOMGR_API __declspec(dllimport)
#endif
# elif ( defined(__GNUC__) &&  __GNUC__ >= 4 )
#define LIBAUDIOMGR_API __attribute__((visibility("default")))
#else // RVC_OS_WIN
#define LIBAUDIOMGR_API
#endif // RVC_OS_WIN

#include <stddef.h>
#include <stdarg.h>

#ifndef MAX_PATH
#define MAX_PATH 260
#endif

typedef struct audiocap_param_s
{
	/** callbacks */
	int ideviceid;
	int isamprate;
	int ichannels;
	int isampleformat;
	double flatency;

	/* called from inner thread, should not block, can be null */
	void (*on_audio_callback)(const void* input, unsigned long audiolen,void* userdata);
	void* user_data;
}audiocap_param_t;

#pragma pack(1)
typedef struct rvc_audio_device_s
{
	int id;							/*audo device id*/
	int channels;					/*max channels*/
	int samprate;					/*default samplerate*/
	double low_latency;				/*default low latency*/
	double high_latency;			/*default high latency*/
	char name[MAX_PATH];			/*device name*/
	char description[MAX_PATH];		/*device description*/
} rvc_audio_device_t;
#pragma pack()


enum audiomgr_loglevel {
	AUDIOMGR_LOG_DEBUG,
	AUDIOMGR_LOG_INFO,
	AUDIOMGR_LOG_WARN,
	AUDIOMGR_LOG_ERROR,
	AUDIOMGR_LOG_FATAL
};

typedef struct audiomgr_callback_s{
	void (*debug)(void* user_data, audiomgr_loglevel elevel, const char* fmt, va_list arg);
	void (*on_audio_mgr_failed)();
	void (*on_audio_mgr_excption)();
	void* user_data;
}audiomgr_callback_t;

class IAudioMgr 
{
public:
	virtual int audio_mgr_initialize() = 0;
	virtual int audio_mgr_terminate() = 0;
	/**/
	virtual int audio_get_device_count(bool binput) = 0;
#ifdef _WIN32
	virtual int audio_get_device_name(char* pstrbuf, size_t ulen, bool binput, unsigned int uindex) = 0;
#else
	virtual int audio_get_device_name(char* pstrbuf, size_t ulen, bool binput, int index) = 0;
#endif
	virtual int audio_get_device_id(const char* pstrname, bool binput) = 0;

	virtual rvc_audio_device_t* audio_get_device_infos(bool binput, int index) = 0;
	
	virtual int audio_get_device_volume(int* ivolume, const char* pstrname, bool binput) = 0;
	virtual int audio_set_device_volume(int ivolume, const char* pstrname, bool binput) = 0;

	virtual int set_audio_capture_params(audiocap_param_t* param) = 0;

	virtual int start_audio_capture() = 0;
	virtual int stop_audio_capture() = 0;
	
	virtual int audio_mgr_destroy() = 0;
};


extern "C" LIBAUDIOMGR_API IAudioMgr* CreateAudioMgrObj(audiomgr_callback_t* pCallback);
extern "C" LIBAUDIOMGR_API void DestroyIAudioMgrObj(IAudioMgr* pIAudioMgr);