1 files changed, 148 insertions, 0 deletions
diff --git a/mpeglib/lib/input/fileInputStream.cpp b/mpeglib/lib/input/fileInputStream.cpp
new file mode 100644
index 00000000..77c31ed6
--- /dev/null
+++ b/mpeglib/lib/input/fileInputStream.cpp
@@ -0,0 +1,148 @@
+/*
+  reads input data
+  Copyright (C) 1999  Martin Vogt
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation.
+
+  For more information look at the file COPYRIGHT in this package
+
+ */
+
+
+
+#include "fileInputStream.h"
+
+#include <iostream>
+
+using namespace std;
+
+FileInputStream::FileInputStream() {
+  file=NULL;
+  lopen=false;
+  fileLen=0;
+}
+
+
+FileInputStream::~FileInputStream() {
+  close();
+}
+
+
+int FileInputStream::open(const char* dest) {
+
+  close();
+  if (dest == NULL) {
+    return false;
+  }
+  setUrl(dest);
+  if (strlen(dest) == 1) {
+    if (strncmp(dest,"-",1)==0) {
+      file=::fdopen(0,"rb");
+    }
+  }
+  // load out of current dir if no full path is given
+  if (file == NULL) {
+    file=fopen(dest,"rb");
+  }
+  fileLen=0;
+  if (file == NULL) {
+    cout <<"cannot open file:"<< dest<<endl;
+
+  } else {
+    lopen=true;
+    struct stat fileStat;
+    stat(dest,&fileStat);
+    fileLen=(long)fileStat.st_size;
+  }
+  int back=(file!=NULL);
+  return back;
+}
+
+
+void FileInputStream::close() {
+  if (isOpen()) {
+    ::fclose(file);
+    file=NULL;
+    lopen=false;
+  }
+}
+
+
+int FileInputStream::isOpen() {
+  return lopen;
+}
+
+
+int FileInputStream::eof() {
+  if (isOpen()==false){
+    return true;
+  }
+  int back=true;
+  if (file != NULL) {
+    back=feof(file);
+  }
+
+  return back;
+}
+
+
+int FileInputStream::read(char* ptr,int size) {
+  int bytesRead=-1;
+  if (isOpen()) {
+    if (size <= 0) {
+      cout << "size is <= 0!"<<endl;
+      return 0;
+    }
+    if (file != NULL) {
+      bytesRead=fread(ptr,1,size,file);
+    }
+  } else {
+    cerr << "read on not open file want:"<<size<<endl;
+    return 0;
+  }
+  return bytesRead;
+}
+
+
+int FileInputStream::seek(long posInBytes) {
+  int back=true;
+  if (isOpen()==false) {
+    return false;
+  }
+  long pos=-1;
+  if (file != NULL) {
+    pos=fseek(file,posInBytes,SEEK_SET);
+  }
+
+  if (pos < 0) {
+    cout <<"seek error in FileInputStream::seek"<<endl;
+    back=false;
+  }
+  return back;
+}
+
+
+long FileInputStream::getByteLength() {
+  return fileLen;
+}
+
+
+long FileInputStream::getBytePosition() {
+  int back=0;
+  if (isOpen()) {
+    if (file != NULL) {
+      back=ftell(file);
+    }
+  }
+  return back;
+}
+
+
+
+void FileInputStream::print() {
+  printf("pos in file:%8x\n",(int)getBytePosition());
+}
+
+