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-rwxr-xr-xsrc/hd24wavefix.cpp207
1 files changed, 207 insertions, 0 deletions
diff --git a/src/hd24wavefix.cpp b/src/hd24wavefix.cpp
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+++ b/src/hd24wavefix.cpp
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1#include "config.h"
2#include <iostream>
3#include <algorithm>
4#include <cctype>
5#include <string>
6#include "hd24fs.h"
7#include <sys/types.h>
8#include <sys/stat.h>
9#include <fcntl.h>
10#ifndef WINDOWS
11#include <unistd.h>
12#endif
13#include <stdio.h>
14#include <stdlib.h>
15#include <iostream>
16#include "convertlib.h"
17#define HEADERSIZE 44
18#define SAMPLES_IN_HALF_BUF 1024*1024
19#define SAMPLES_IN_FULL_BUF 2*SAMPLES_IN_HALF_BUF
20#define BYTES_PER_SAM 3
21#define BYTES_IN_HALF_BUF BYTES_PER_SAM*SAMPLES_IN_HALF_BUF
22#define BYTES_IN_FULL_BUF BYTES_PER_SAM*SAMPLES_IN_FULL_BUF
23char audiobuf[BYTES_IN_FULL_BUF];
24char fixbuf[BYTES_IN_HALF_BUF];
25string inputfile;
26string outputfile;
27int simple=0;
28FILE* infile;
29FILE* outfile;
30__uint64 writeoffset;
31
32void clearaudiobuf()
33{
34 int i;
35 for (i=0;i<BYTES_IN_FULL_BUF;i++) {
36 audiobuf[i]=0;
37 }
38}
39void shiftaudiobuf()
40{
41 int i;
42 for (i=0;i<BYTES_IN_HALF_BUF;i++) {
43 audiobuf[i]=audiobuf[i+BYTES_IN_HALF_BUF];
44 audiobuf[i+BYTES_IN_HALF_BUF]=0;
45 }
46}
47int getsam(int samnum)
48{
49 int samval=audiobuf[samnum+BYTES_IN_HALF_BUF]
50 +(audiobuf[samnum+BYTES_IN_HALF_BUF]*256)
51 +(audiobuf[samnum+BYTES_IN_HALF_BUF]*256*256);
52 return samval;
53}
54int tosigned(int samval) {
55 if (samval>=(1<<23)) {
56 samval-=(1<<24);
57 }
58 return samval;
59}
60int topos(int samval) {
61 return samval+(1<<23);
62}
63bool fileexists (string* fname) {
64 struct stat fi;
65 if ((stat (fname->c_str(), &fi) != -1) && ((fi.st_mode & S_IFDIR) == 0)) {
66 return true;
67 }
68 return false;
69}
70void hd24seek(FSHANDLE devhd24,__uint64 seekpos)
71{
72#if defined(LINUX) || defined(DARWIN)
73 lseek(devhd24,seekpos,0);
74// lseek64(devhd24,seekpos,0);
75#endif
76#ifdef WINDOWS
77 LARGE_INTEGER li;
78 li.HighPart=seekpos>>32;
79 li.LowPart=seekpos%((__uint64)1<<32);
80 SetFilePointerEx(devhd24,li,NULL,FILE_BEGIN);
81#endif
82 return;
83}
84
85int parsecommandline(int argc, char ** argv)
86{
87 int invalid=0;
88 inputfile="";
89 outputfile="";
90 for (int c=1;c<argc;c++) {
91 string arg=argv[c];
92 if (arg.substr(0,strlen("--input="))=="--input=") {
93 inputfile=arg.substr(strlen("--input="));
94 continue;
95 }
96 if (arg.substr(0,strlen("--output="))=="--output=") {
97 outputfile=arg.substr(strlen("--output="));
98 continue;
99 }
100 if (arg.substr(0,strlen("--simple"))=="--simple") {
101 simple=1;
102 continue;
103 }
104 cout << "Invalid argument: " << arg << endl;
105 invalid=1;
106 }
107 return invalid;
108}
109void findmask(FILE* infile)
110{
111 fseek(infile,HEADERSIZE,SEEK_SET);
112 return;
113}
114void copyheader(FILE* infile,FILE* outfile)
115{
116 char buffer[HEADERSIZE];
117 fseek(infile,0,SEEK_SET);
118 int readcount=fread((void*)&buffer[0],1,HEADERSIZE,infile);
119 if (readcount>0) {
120 int writecount=fwrite((const void*)&buffer[0],1,HEADERSIZE,outfile);
121 if (writecount==0) {
122 cout << "Cannot write output file" << endl;
123 }
124 }
125 return;
126}
127void copyaudio(FILE* infile,FILE* outfile) {
128 int readcount;
129 do {
130 shiftaudiobuf();
131 readcount=fread((void*)&audiobuf[BYTES_IN_HALF_BUF],1,BYTES_IN_HALF_BUF,infile);
132 for (int i=0; i<SAMPLES_IN_HALF_BUF-1;i+=2) {
133 int q0=3;
134 int q1=0;
135 if (audiobuf[BYTES_IN_HALF_BUF+i*3+q0+2-6]==audiobuf[BYTES_IN_HALF_BUF+i*3+q1+2]) {
136 audiobuf[BYTES_IN_HALF_BUF+i*3+q0+2]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+2];
137 } else {
138 audiobuf[BYTES_IN_HALF_BUF+i*3+q0+0]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+0];
139 audiobuf[BYTES_IN_HALF_BUF+i*3+q0+1]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+1];
140 audiobuf[BYTES_IN_HALF_BUF+i*3+q0+2]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+2];
141 }
142 }
143 if (readcount>0) {
144 int writecount=fwrite(
145 (void*)&audiobuf[BYTES_IN_HALF_BUF],1,readcount,outfile);
146 if (writecount==0) {
147 cout << "Cannot write output file" << endl;
148 }
149 }
150
151 }
152 while (readcount>0);
153 return;
154}
155void simplecopyaudio(FILE* infile,FILE* outfile)
156{
157 int readcount;
158 do {
159 readcount=fread((void*)&audiobuf[BYTES_IN_HALF_BUF],1,BYTES_IN_HALF_BUF,infile);
160 for (int i=0; i<SAMPLES_IN_HALF_BUF-1;i+=2) {
161 int q0=3;
162 int q1=0;
163 audiobuf[BYTES_IN_HALF_BUF+i*3+q0+0]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+0];
164 audiobuf[BYTES_IN_HALF_BUF+i*3+q0+1]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+1];
165 audiobuf[BYTES_IN_HALF_BUF+i*3+q0+2]=audiobuf[BYTES_IN_HALF_BUF+i*3+q1+2];
166 }
167 if (readcount>0) {
168 int writecount=fwrite(
169 (void*)&audiobuf[BYTES_IN_HALF_BUF],1,readcount,outfile);
170 if (writecount==0) {
171 cout << "Cannot write output file" << endl;
172 }
173 }
174
175 }
176 while (readcount>0);
177 return;
178}
179void dothefix(FILE* infile, FILE* outfile)
180{
181 copyheader(infile,outfile);
182 findmask(infile);
183 if (simple==1) {
184 simplecopyaudio(infile,outfile);
185 } else {
186 copyaudio(infile,outfile);
187 }
188}
189int main (int argc,char ** argv)
190{
191 int invalid=parsecommandline(argc,argv);
192 if (invalid!=0) {
193 return invalid;
194 }
195 if ((inputfile=="")||(outputfile=="")) {
196 cout << "Usage: hd24wavefix [--simple] --input=<inputfile> --output=<outputfile>" << endl;
197 return 1;
198 }
199 clearaudiobuf();
200 // Open files
201 infile=fopen(inputfile.c_str(),"rb");
202 outfile=fopen(outputfile.c_str(),"wb");
203 dothefix(infile,outfile);
204 fclose(outfile);
205 fclose(infile);
206 return 0;
207}
© 2015 Mike Crute