Differences

This shows you the differences between two versions of the page.

--- himdmusictransferformac [2009/03/26 23:20] – karcher
+++ himdmusictransferformac [2009/03/27 19:57] – wikiadmin
@@ Line 31: / Line 31: @@
 The goal here is to fully understand the C++-code which contains the HiMD-functionality and reimplement the code in C/C++ again. That code would reside inside a library called "libhimd" which then can be used from a simple Qt-based GUI to provide the functionality (and beyond :)) of "HiMD Transfer for Mac" on all platforms which support Qt.
+===== Operation =====
+The following will try to explain in detail how the software works (incomplete).
+==== Download of an MP3 to a MiniDisc ====
+  - Unmount the MiniDisc within MacOSX (the Disk-icon of the MiniDisc vanishes from desktop)
+  - Read disk-id and DES-encryption key from disk to generate key for block-encryption
+  - Fetch a 16kByte block of the source MP3 and encrypt it with some 3DES-like encryption, write into a 32kByte Buffer
+  - Fetch another 16kByte block, encrypt, write to the buffer and flush it
+  - Write the buffer to disk using special SCSI write-commands
+  - Repeat previous 3 commands until MP3 is written to disk
+  - Decode idv3-Tag from MP3 and create track-info and write to disk
+  - Once the application is closed, mount the disk in MacOS again (Icon reappars on desktop)
 ===== Links =====