// LoadWavHeader.cpp : main project file.

#include <stdio.h>
#include <string.h>
#include <iostream>
#include <stdint.h>

using namespace std;


class WavHeader
{
public:
	char                RIFF[4];        /* RIFF Header      */ //Magic header
	uint32_t            fileSize;      /* RIFF Chunk Size  */
	char                WAVE[4];        /* WAVE Header      */
	char                fmt[4];        /* FMT header      */
	uint32_t            chunkSize;      /* Size of the fmt chunk                                */
	uint16_t            audioFormat;    /* Audio format 1=PCM,6=mulaw,7=alaw, 257=IBM Mu-Law, 258=IBM A-Law, 259=ADPCM */
	uint16_t            numOfChan;      /* Number of channels 1=Mono 2=Sterio                  */
	uint32_t            samplesPerSec;  /* Sampling Frequency in Hz                            */
	uint32_t            bytesPerSec;    /* bytes per second */
	uint16_t            blockAlign;    /* 2=16-bit mono, 4=16-bit stereo */
	uint16_t            bitsPerSample;  /* Number of bits per sample      */
	char                subchunk2ID[4]; /* "data"  string  */
	uint32_t            subchunk2Size;  /* Sampled data length    */
};


int errormessage(const char* msg, int error = 0)
{
	cout << msg << endl;
	while(cin.get() != 10);
	
	return error;
}

int main()
{
	FILE *fp = NULL;
	fp = fopen("test.wav", "r");
	if(!fp)
	{
		return errormessage("Error: Cannot Open File");
	}
	
	WavHeader header;
	fread(&header, sizeof(WavHeader), 1, fp);
	
	if(!strcmp(header.RIFF, "RIFF"))
	{
		errormessage("Error: Not RIFF Format!");
	}
	
	if(!strcmp(header.WAVE, "WAVE"))
	{
		return errormessage("Error: File Is Not .Wav");
	}
	
	if(!strcmp(header.fmt, "fmt "))
	{
		return errormessage("Error: 'fmt ' Error");
	}
	
	cout << "File Size: " << header.fileSize << endl;
	cout << "Chunk Size: " << header.chunkSize << endl;
	cout << "Format Type: " << header.audioFormat << endl;
	cout << "Channels: " << header.numOfChan << endl;
	cout << "Sample Rate: " << header.samplesPerSec << endl;
	cout << "Bytes Per Sec: " << header.bytesPerSec << endl;
	cout << "Press Enter To End";
	
	while(cin.get() != 10);
	
    return 0;
}