WAV to TEXT

#include <iostream>
//02
#include <stdio.h>
//03
#include <stdlib.h>
//04
#include <fstream>
#include "FFT.cpp"
//05
using namespace std;
//06
//double byteToDouble( char firstByte, char secondByte );
//07

//08
// WAVE PCM soundfile format (you can find more in https://ccrma.stanford.edu/courses/422/projects/WaveFormat/ )
//09
typedef struct header_file
//10
{
//11
    char chunk_id[4];
//12
    int chunk_size;
//13
    char format[4];
//14
    char subchunk1_id[4];
//15
    int subchunk1_size;
//16
    short int audio_format;
//17
    short int num_channels;
//18
    int sample_rate;            // sample_rate denotes the sampling rate.
//19
    int byte_rate;
//20
    short int block_align;
//1
    short int bits_per_sample;
//22
    char subchunk2_id[4];
//23
    int subchunk2_size; // subchunk2_size denotes the number of samples.
//24
    //char data; // actual data : Added by tarmizi
//25
} header;
//26

//27
typedef struct header_file* header_p;
//28

//29

///30

//31

//32
double real_in[131072],image_in[131072],Amplitude[131072];


int main()
//33

////34
{
	for(int k=0;k<131072;k++)
{
	real_in[k]=0;
	image_in[k]=0;
}
//35
    ofstream myFile;
//36
    myFile.open("mizi.txt");
//37

//38

//39
    FILE * infile = fopen("C:\\Users\\vip7009pro\\Downloads\\Music\\Casio-MT-45-16-Beat.wav","rb");     // Open wave file in read mode
//40
    FILE * outfile = fopen("D:\\Output.txt","wb");      // Create output ( wave format) file in write mode;
//41
    FILE * svFile;
//42

//43
    int BUFSIZE = 256;                  // BUFSIZE can be changed according to the frame size required (eg:512)
//44
    int count = 0;                      // For counting number of frames in wave file.
//45
    short int buff16[BUFSIZE];              // short int used for 16 bit as input data format is 16 bit PCM audio
//46
    header_p meta = (header_p)malloc(sizeof(header));   // header_p points to a header struct that contains the wave file metadata fields
//47
    int nb;                         // variable storing number of bytes returned
//48

//49
    if (infile)
//50
    {
//51
        fread(meta, 1, sizeof(header), infile);
//52
        //fwrite(meta,1, sizeof(*meta), outfile);
//53

//54
 	int tang=0;
//55
        cout << "first chunk is :" << sizeof(meta->chunk_id) << " bytes in size" << endl;
//56
        cout << "The file is a :" << meta->chunk_id << " format" << endl;
//57
        cout << " Size of Header file is "<<sizeof(*meta)<<" bytes" << endl;
//58
        cout << " Sampling rate of the input wave file is "<< meta->sample_rate <<" Hz" << endl;
//59
        cout << " Size of data in the audio is: " << sizeof(meta->subchunk2_size)<< " bytes" << endl;
//60
        cout << " The number of channels of the file is "<< meta->num_channels << " channels" << endl;
//61
        cout << " The audio format is PCM:"<< meta->audio_format << endl;
       while ((nb = fread(buff16,1,BUFSIZE,infile))>0)
        {
                    // Reading data in chunks of BUFSIZE
            //cout << nb <<endl;
            count++;
                            // Incrementing > of frame
            for (int i = 0; i<nb; i++) // nb = 256 (frame size)
                {

                    // convert the 16 bit samples to double
                    int c = (buff16[i]<<8) | buff16[i+1];
                    double t = c/32768.0;
                    // output the samples to a txt file.
                    //cout << data[x] << endl;
                   myFile << t <<endl;
                   real_in[tang]=t;
                   tang++;


                }




            fwrite(buff16,1,nb,outfile);          // Writing read data into output file
        }
    cout << " Number of frames in the input wave file are " <<count << endl;
//90

/*
	FFT(17,real_in,image_in);
	for(int kk=0;kk<131072;kk++)
	{
		myFile<<kk+1<<": "<<real_in[kk]<<"+"<<image_in[kk]<<"j"<<" Amplitude: ";
		myFile<<sqrt((real_in[kk]*real_in[kk]) + (image_in[kk]*image_in[kk]))<<endl;
	}

	*/
return 0;
}
}