New command -read_speed

xorriso/xorriso_private.h

@@ -341,7 +341,11 @@ struct XorrisO { /* the global context of xorriso */
  int ban_stdio_write;
  int do_dummy;
  int do_close;
- int speed;     /* in libburn units : 1000 bytes/second , 0 = Max, -1 = Min */
+
+ int write_speed;    /* Write speed in libburn units : 1000 bytes/second ,
+                                           0 = Max, -1 = Min, -2= do not set */
+ int read_speed;     /* Read speed. See above */
+
  int fs;        /* fifo size in 2048 byte chunks : at most 1 GB */
  int padding;   /* number of bytes to add after ISO 9660 image */
  int do_padding_by_libisofs; /* 0= by libburn , 1= by libisofs */