I have a program that should read the metadata of all wav files. I used the following parsed struct and fread functions.
The issue this code runs into is that with some .wav RIFF header fmt files the meta data read is incorrect even after paring the struct as shown below, could it help if I use a fseek function between every read function.
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
using std::string;
typedef struct RIFF_CHUNCK_DISCRIPTOR {
char RIFF[4]; // RIFF Header Magic header
unsigned long ChunkSize; // RIFF Chunk Size
char WAVE[4]; // WAVE Header
};
typedef struct FMT_CHUNCK_DISCRIPTOR {
char fmt[4]; // FMT header
unsigned long Subchunk1Size; // Size of the fmt chunk
unsigned short AudioFormat; // Audio format
unsigned short NumOfChan; // Number of channels
unsigned long SamplesPerSec; // Sampling Frequency in Hz
unsigned long bytesPerSec; // bytes per second
unsigned short blockAlign; // 2=16-bit mono, 4=16-bit stereo
unsigned short bitsPerSample; // Number of bits per sample
};
typedef struct DATA_SUB_CHUNCK {
char Subchunk2ID[4]; // "data" string
unsigned long Subchunk2Size; // Sampled data length
};
int main(int argc, char* argv[]) {
const char* fileName;
cout << "enter f name " << fileName;
RIFF_CHUNCK_DISCRIPTOR RCD;
FMT_CHUNCK_DISCRIPTOR FCD;
DATA_SUB_CHUNCK DSC;
FILE* InFile = fopen(fileName, "r");
fread(&RCD, 1, sizeof(RIFF_CHUNCK_DISCRIPTOR), InFile);
fread(&FCD, 1, sizeof(FMT_CHUNCK_DISCRIPTOR), InFile);
fread(&DSC, 1, sizeof(DATA_SUB_CHUNCK), InFile);
}
The reason I used multiple structs is to ensure that all the data of the header file is read correctly since although most wav file header data is in order this is sometimes not true.
