Changeset 219 in xtideuniversalbios for trunk/Serial_Server/library/FlatImage.h

Timestamp:

Jan 25, 2012, 7:04:43 AM (12 years ago)

Author:

gregli@…

google:author:

gregli@hotmail.com

Message:

Serial Server, more minor improvements, added support for larger than 2 GB disks under Win32

File:

• trunk/Serial_Server/library/FlatImage.h (modified) (2 diffs)

trunk/Serial_Server/library/FlatImage.h

@@ -6 +6 @@
 //
 
-#include <stdio.h>
 #include "library.h"
 
@@ -12 +11 @@
 {
 private:
-    FILE *fp;
+    class FileAccess fp;
 
 public:
-    FlatImage( char *name, int p_readOnly, int p_drive, int create, unsigned long cyl, unsigned long head, unsigned long sect, int useCHS );
-    ~FlatImage();
+    FlatImage( char *name, int p_readOnly, int p_drive, int p_create, unsigned long p_cyl, unsigned long p_head, unsigned long p_sect, int p_useCHS )   :   Image( name, p_readOnly, p_drive, p_create, p_cyl, p_head, p_sect, p_useCHS )
+    {
+        long filesize;
 
-    int seekSector( unsigned long cyl, unsigned long sect, unsigned long head );
-    int seekSector( unsigned long lba );
-    int writeSector( void *buff );
-    int readSector( void *buff );
+        if( p_create )
+        {
+            char buff[512];
+            unsigned long size;
+            double sizef;
+            FileAccess cf;
+
+            size = (unsigned long) p_cyl * (unsigned long) p_sect * (unsigned long) p_head;
+            if( size > cf.MaxSectors )
+                log( -1, "'%s', can't create flat file with size greater than %lu 512-byte sectors", name, cf.MaxSectors );
+            sizef = size / 2048.0;   // 512 byte sectors -> MB
+
+            cf.Create( name );
+
+            memset( &buff[0], 0, 512 );
+            while( size-- )
+                cf.Write( &buff[0], 512 );
+        
+            if( p_cyl > 1024 )
+                log( 0, "Created file '%s', size %.1lf MB", name, sizef );
+            else
+                log( 0, "Created file '%s', geometry %u:%u:%u, size %.1lf MB", name, p_cyl, p_sect, p_head, sizef );
+
+            cf.Close();
+        }
+
+        fp.Open( name );
+
+        totallba = fp.SizeSectors();
+
+        init( name, p_readOnly, p_drive, p_cyl, p_head, p_sect, p_useCHS );
+    }
+
+    FlatImage::~FlatImage()
+    {
+        fp.Close();
+    }
+
+    void seekSector( unsigned long lba )
+    {
+        fp.SeekSectors( lba );
+    }
+
+    void writeSector( void *buff )
+    {
+        fp.Write( buff, 512 );
+    }
+
+    void readSector( void *buff )
+    {
+        fp.Read( buff, 512 );
+    }
 };