GÉNÉRATION DE FICHIER .WAV

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char *argv[])
{

	char *rawname = NULL;
	if(argc > 1)
	{
		rawname = malloc(strlen(argv[1])*sizeof(char));
		if(rawname == NULL)
		{
			printf("Dynamic memory allocation failed.\n");
			return -1;
		}
		strcpy(rawname, argv[1]);
	}
	else
	{
		printf("wav [RawFile]\n");
		return -1;
	}
	
	
	FILE * raw = NULL;
	raw = fopen(rawname, "rb+");
	if(raw == NULL)
	{
		printf("File \"%s\" not found.\n", rawname);
		return -1;
	}
	free(rawname);
	
	char *wavname;
	if(argc > 2)
	{
		wavname = malloc(strlen(argv[2])*sizeof(char));
		strcpy(wavname, argv[2]);
	}
	else
	{
		wavname = malloc(strlen("wav.wav")*sizeof(char));
		strcpy(wavname, "wav.wav");
	}
	FILE * wav = NULL;
	wav = fopen(wavname, "wb");
	if(wav == NULL)
	{
		printf("%s creation failed.\n", wavname);
		return -1;
	}
	
	fseek(raw, 0 , SEEK_END);
	int wavsize = ftell(raw);
	printf("wavsize = %d bits (%.0f kb)\n", wavsize+44, (float)(wavsize+44)/1024);//taille des donnees + header
	char RIFF[4] = {'R','I','F','F'}; //0x52,0x49,0x46,0x46
	int FileSize = wavsize+44-8; // 44 bits pour le header - 8 bits
	char WAVE[4] = {'W','A','V','E'}; //0x57,0x41,0x56,0x45
	char fmt[4]  = {'f','m','t',' '}; //0x66,0x6D, 0x74,0x20
	int BlocSize = 0x10  ; //size of WAVE section chunck
	short AudioFormat = 0x01  ; //2 octets, WAVE type format
	short NbrCanaux= 0x02  ; //2 octets, mono (0x01) or stereo (0x02)
	int Frequence = 0x5622; // 4 octets, 22050(Hertz)
	int BytePerSec;// 4 octets
	short BytePerBloc; // 2 octets
	short BitsPerSample = 0x8; // 2 octets, 8-16-24
	BytePerBloc = NbrCanaux * (BitsPerSample/8);
	BytePerSec = Frequence * (int)BytePerBloc;
	char data[4] = {'d','a','t','a'};
	int DataSize = wavsize;
	/* DATA[] [Octets du Sample 1 du Canal 1] [Octets du Sample 1 du Canal 2] */
	
	
	fwrite(RIFF, 1, 4, wav);
	fwrite(&FileSize, 4, 1, wav);
	fwrite(WAVE, 1, 4, wav);
	fwrite(fmt , 1, 4, wav);
	fwrite(&BlocSize, 4, 1, wav);
	fwrite(&AudioFormat, 2, 1, wav);
	fwrite(&NbrCanaux,2,1, wav);
	fwrite(&Frequence, 4, 1, wav);
	fwrite(&BytePerSec, 4, 1, wav);
	fwrite(&BytePerBloc, 2, 1, wav);
	fwrite(&BitsPerSample, 2, 1, wav);
	fwrite(data, 1, 4, wav);
	fwrite(&DataSize, 4, 1, wav);

	fseek(raw, 0, SEEK_SET);
	printf("Creating %s...\n", wavname);
	/*//Premier algorithme de copie
	int i;
	for(i = 0; i < FileSize; i++)
	{
		//printf("\r%d%c",(i*100)/FileSize,'%');
		fread(&p, 1, 1, raw);
		fwrite(&p, 1, 1, wav);
	}
	/* */
	
	/*//Deuxieme algorithme de copie
	int read = 0;
	char buffer[512];
	while ((read = fread(buffer, 1, 512, raw)) != 0)
		fwrite(buffer, 1, read, wav);
	/* */
	
	//*//Troisieme algorithme de copie, le plus rapide (etrangement)
	char *p = malloc(wavsize*sizeof(char));
	if(p == NULL)
	{
		printf("Dynamic memory allocation failed.\n");
		return -1;
	}
	fread(p, 1, wavsize, raw);
	fwrite(p, 1, wavsize, wav);
	/* */
	
	printf("%s created.\n", wavname);
	
	free(p);
	free(wavname);
	fclose(raw);
	fclose(wav);
	
	return 0;
}