libtgvoip/audio/AudioOutput.h

//
// libtgvoip is free and unencumbered public domain software.
// For more information, see http://unlicense.org or the UNLICENSE file
// you should have received with this source code distribution.
//

#ifndef LIBTGVOIP_AUDIOOUTPUT_H
#define LIBTGVOIP_AUDIOOUTPUT_H

#include <stdint.h>
#include <string>
#include <vector>
#include "../MediaStreamItf.h"

namespace tgvoip{

class AudioInputDevice;
class AudioOutputDevice;
	
namespace audio{
class AudioOutput : public MediaStreamItf{
public:
	AudioOutput();
	AudioOutput(std::string deviceID);
	virtual ~AudioOutput();
	virtual void Configure(uint32_t sampleRate, uint32_t bitsPerSample, uint32_t channels)=0;
	virtual bool IsPlaying()=0;
    virtual float GetLevel();
	static int32_t GetEstimatedDelay();
	virtual std::string GetCurrentDevice();
	virtual void SetCurrentDevice(std::string deviceID);
	static AudioOutput* Create(std::string deviceID);
	static void EnumerateDevices(std::vector<AudioOutputDevice>& devs);
	bool IsInitialized();

#if defined(__ANDROID__)
	static int systemVersion;
#endif

protected:
	std::string currentDevice;
	bool failed;
	static int32_t estimatedDelay;
};
}}

#endif //LIBTGVOIP_AUDIOOUTPUT_H