#pragma once
#include"WavStruct.h"
#include <fstream>
class WavFileReader
{
public:
	WavFileReader();
	~WavFileReader();

	bool OpenFile(const std::string& p_fileName);
	void CloseFile();
	int ReadData(char* p_buffer, int p_position, int p_readLength);
	void SetPosition(int p_position);
	int GetPosition();
	int GetDataLength();
	int GetFileLength();
	int GetChannels();
	int GetSampleRate();
	int GetBitsPerSample();
	float GetLastingTime();
	int GetBytesPerSec();
	int GetSampleNum();
	int16_t GetSampleValue(int p_index);
private:
	bool ProcessWavFile();
	void ProcessSampleValue();
	void ProcessLIST(int p_listLength);
	void ProcessCustom();
	void ProcessDATA();
private:
	std::ifstream	m_file;
	uint32_t		m_fileLength = 0;
	uint32_t		m_dataLength = 0;
	uint32_t		m_dataOffset = 0;
	uint32_t		m_channels = 0;
	uint32_t		m_sampleRate = 0;
	uint32_t		m_bitsPerSample = 0;
	uint32_t		m_bytesPerSec = 0;
	float			m_lastingTime = 0;
	std::string		m_fileName = "";
	uint32_t		m_sampleNum = 0;
	uint64_t		m_fileSize = 0;
};