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#include "config.h"
#include <iostream>
#include <algorithm>
#include <cctype>
#include <string>
#include "hd24fs.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifndef WINDOWS
#include <unistd.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include "convertlib.h"
#define HEADERSIZE 44
#define SAMPLES_IN_HALF_BUF 1024*1024
#define SAMPLES_IN_FULL_BUF 2*SAMPLES_IN_HALF_BUF
#define BYTES_PER_SAM 3
#define BYTES_IN_HALF_BUF BYTES_PER_SAM*SAMPLES_IN_HALF_BUF
#define BYTES_IN_FULL_BUF BYTES_PER_SAM*SAMPLES_IN_FULL_BUF
char audiobuf[BYTES_IN_FULL_BUF];
char fixbuf[BYTES_IN_HALF_BUF];
string inputfile;
string outputfile;
int simple=0;
FILE* infile;
FILE* outfile;
__uint64 writeoffset;
void clearaudiobuf()
{
int i;
for (i=0;i<BYTES_IN_FULL_BUF;i++) {
audiobuf[i]=0;
}
}
void shiftaudiobuf()
{
int i;
for (i=0;i<BYTES_IN_HALF_BUF;i++) {
audiobuf[i]=audiobuf[i+BYTES_IN_HALF_BUF];
audiobuf[i+BYTES_IN_HALF_BUF]=0;
}
}
int getsam(int samnum)
{
int samval=audiobuf[samnum+BYTES_IN_HALF_BUF]
+(audiobuf[samnum+BYTES_IN_HALF_BUF]*256)
+(audiobuf[samnum+BYTES_IN_HALF_BUF]*256*256);
return samval;
}
int tosigned(int samval) {
if (samval>=(1<<23)) {
samval-=(1<<24);
}
return samval;
}
int topos(int samval) {
return samval+(1<<23);
}
bool fileexists (string* fname) {
struct stat fi;
if ((stat (fname->c_str(), &fi) != -1) && ((fi.st_mode & S_IFDIR) == 0)) {
return true;
}
return false;
}
void hd24seek(FSHANDLE devhd24,__uint64 seekpos)
{
#if defined(LINUX) || defined(DARWIN)
lseek(devhd24,seekpos,0);
// lseek64(devhd24,seekpos,0);
#endif
#ifdef WINDOWS
LARGE_INTEGER li;
li.HighPart=seekpos>>32;
li.LowPart=seekpos%((__uint64)1<<32);
SetFilePointerEx(devhd24,li,NULL,FILE_BEGIN);
#endif
return;
}
int parsecommandline(int argc, char ** argv)
{
int invalid=0;
inputfile="";
outputfile="";
for (int c=1;c<argc;c++) {
string arg=argv[c];
if (arg.substr(0,strlen("--input="))=="--input=") {
inputfile=arg.substr(strlen("--input="));
continue;
}
if (arg.substr(0,strlen("--output="))=="--output=") {
outputfile=arg.substr(strlen("--output="));
continue;
}
if (arg.substr(0,strlen("--simple"))=="--simple") {
simple=1;
continue;
}
cout << "Invalid argument: " << arg << endl;
invalid=1;
}
return invalid;
}
void findmask(FILE* infile)
{
fseek(infile,HEADERSIZE,SEEK_SET);
return;
}
void copyheader(FILE* infile,FILE* outfile)
{
char buffer[HEADERSIZE];
fseek(infile,0,SEEK_SET);
int readcount=fread((void*)&buffer[0],1,HEADERSIZE,infile);
if (readcount>0) {
int writecount=fwrite((const void*)&buffer[0],1,HEADERSIZE,outfile);
if (writecount==0) {
cout << "Cannot write output file" << endl;
}
}
return;
}
void copyaudio(FILE* infile,FILE* outfile) {
int readcount;
do {
shiftaudiobuf();
readcount=fread((void*)&audiobuf[BYTES_IN_HALF_BUF],1,BYTES_IN_HALF_BUF,infile);
for (int i=0; i<SAMPLES_IN_HALF_BUF-1;i+=2) {
int q0=3;
int q1=0;
if (audiobuf[BYTES_IN_HALF_BUF+i*3+q0+2-6]==audiobuf[BYTES_IN_HALF_BUF+i*3+q1+2]) {
audiobuf[BYTES_IN_HALF_BUF+i*3+q0+2]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+2];
} else {
audiobuf[BYTES_IN_HALF_BUF+i*3+q0+0]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+0];
audiobuf[BYTES_IN_HALF_BUF+i*3+q0+1]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+1];
audiobuf[BYTES_IN_HALF_BUF+i*3+q0+2]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+2];
}
}
if (readcount>0) {
int writecount=fwrite(
(void*)&audiobuf[BYTES_IN_HALF_BUF],1,readcount,outfile);
if (writecount==0) {
cout << "Cannot write output file" << endl;
}
}
}
while (readcount>0);
return;
}
void simplecopyaudio(FILE* infile,FILE* outfile)
{
int readcount;
do {
readcount=fread((void*)&audiobuf[BYTES_IN_HALF_BUF],1,BYTES_IN_HALF_BUF,infile);
for (int i=0; i<SAMPLES_IN_HALF_BUF-1;i+=2) {
int q0=3;
int q1=0;
audiobuf[BYTES_IN_HALF_BUF+i*3+q0+0]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+0];
audiobuf[BYTES_IN_HALF_BUF+i*3+q0+1]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+1];
audiobuf[BYTES_IN_HALF_BUF+i*3+q0+2]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+2];
}
if (readcount>0) {
int writecount=fwrite(
(void*)&audiobuf[BYTES_IN_HALF_BUF],1,readcount,outfile);
if (writecount==0) {
cout << "Cannot write output file" << endl;
}
}
}
while (readcount>0);
return;
}
void dothefix(FILE* infile, FILE* outfile)
{
copyheader(infile,outfile);
findmask(infile);
if (simple==1) {
simplecopyaudio(infile,outfile);
} else {
copyaudio(infile,outfile);
}
}
int main (int argc,char ** argv)
{
int invalid=parsecommandline(argc,argv);
if (invalid!=0) {
return invalid;
}
if ((inputfile=="")||(outputfile=="")) {
cout << "Usage: hd24wavefix [--simple] --input=<inputfile> --output=<outputfile>" << endl;
return 1;
}
clearaudiobuf();
// Open files
infile=fopen(inputfile.c_str(),"rb");
outfile=fopen(outputfile.c_str(),"wb");
dothefix(infile,outfile);
fclose(outfile);
fclose(infile);
return 0;
}
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