myvtm/Other/libaudiorender/libaudiorender.h

#pragma once

#include <speex/speex_resampler.h>
#include "iaudiorenderinterface.h"
#include "../libaudioqueue/libaudioqueue.h"

#pragma comment(lib,"avrt.lib")
#include<Audioclient.h>
#include <mmdeviceapi.h>
#include<avrt.h>
#include <stdio.h>
#include <stdint.h>

enum eSpeakerSamplingDepthRate{
	eSixteenBitsCD,					//2通道，16位，44100Hz,每秒采样大小176400字节，采集声音每次返回buffer大小448*4=1792字节,转为8k采样率，单声道后buffer大小162字节和163字节交替
	eSixteenBitsDVD,				//2通道，16位，48000Hz,每秒采样大小192000字节，采集声音每次返回buffer大小480*4=1920字节,转为8k采样率，单声道后buffer大小160字节
	eSixteenBitsStatdioLow,			//2通道，16位，96000Hz,每秒采样大小384000字节，采集声音每次返回buffer大小960*4=3840字节,转为8k采样率，单声道后buffer大小160字节
	eSixteenBitsStatdioHigh,		//2通道，16位，192000Hz,每秒采样大小768000字节，采集声音每次返回buffer大小1920*4=7680字节,转为8k采样率，单声道后buffer大小160字节
	eTwentyfourStatdioA,			//2通道，24位，44100Hz
	eTwentyfourStatdioB,			//2通道，24位，48000Hz
	eTwentyfourStatdioC,			//2通道，24位，96000Hz
	eTwentyfourStatdioD				//2通道，24位，192000Hz
};

enum eChannelNumber{
	eSingleChannel = 1,	
	eDoubleChannel = 2
};

class AudioRenderImpl : public IAudioRender, public IRenderCallback
{
public:
	AudioRenderImpl();
	virtual int StartRender(int iQueue, void* pFrameformat, const char*pSwitchName);
	BOOL AdjustFormatTo16Bits(WAVEFORMATEX *pwfx);
	static DWORD WINAPI pfThreadFunc(LPVOID lpThreadParameter);
	uint32_t ConvertDouble2SingleChannel(char* pDstBuf, const uint32_t uDstLen, const unsigned char* pSrcBuf, uint32_t uSrcLen, uint32_t uBitDeepth);
	eSpeakerSamplingDepthRate GetSpeakerSampleRate(uint32_t udepth, uint32_t usamplerate);
	uint32_t TranslateBuffer2DestFrameFormat(spx_int16_t* pOutAudio, spx_uint32_t* pAudioLen, spx_uint32_t uAudioBufferLen, unsigned char* pCbBuffer, const uint32_t uBufferLen, SpeexResamplerState *st, const audio_frame* pDestFrameFormat);
	bool InitAudioFrame(audio_frame* pframe);

	void RenderFunc();
	int InitQueueInfo(int iQueue);
	virtual int StopRender();
	virtual int ReStartRender();
	void Close();
	void LogRenderInfo(); 

	virtual void Debug(const char *fmt, ...);
	virtual void OnRenderFailed();
	virtual void OnAudioRenderExcption();

	virtual void Release();
	~AudioRenderImpl();

private:
	HANDLE m_hThread;
	HANDLE m_hTask;
	HANDLE m_hTimerWakeUp;
	IAudioCaptureClient * m_pAudioCaptureClient;
	IAudioClient * m_pAudioClient;
	WAVEFORMATEX * m_pwfx;
	HANDLE m_hEventStop;
	IMMDevice* m_pMMDevice;
	int m_iQueueNumber;
	audio_frame* m_frame_format;
	Clibaudioqueue *m_audio_cap;
	char m_strFilePathName[MAX_PATH];
	bool m_bRecordPCM;
};