burn_speed_descriptor Struct Reference

Description of a speed capability as reported by the drive in conjunction with eventually loaded media. More...

#include <libburn.h>

Collaboration diagram for burn_speed_descriptor:


Data Fields
int	source
	Where this info comes from : 0 = misc , 1 = mode page 2Ah , 2 = ACh GET PERFORMANCE.
int	profile_loaded
	The media type that was current at the time of report -2 = state unknown, -1 = no media was loaded , else see burn_disc_get_profile().
char	profile_name [80]
int	end_lba
	The attributed capacity of appropriate media in logical block units i.e.
int	write_speed
	Speed is given in 1000 bytes/s , 0 = invalid.
int	read_speed
int	wrc
	Expert info from ACh GET PERFORMANCE and/or mode page 2Ah.
int	exact
int	mrw
struct burn_speed_descriptor *	prev
	List chaining.
struct burn_speed_descriptor *	next

Detailed Description

Description of a speed capability as reported by the drive in conjunction with eventually loaded media.

There can be more than one such object per drive. So they are chained via .next and .prev , where NULL marks the end of the chain. This list is set up by burn_drive_scan() and gets updated by burn_drive_grab(). A copy may be obtained by burn_drive_get_speedlist() and disposed by burn_drive_free_speedlist(). For technical background info see SCSI specs MMC and SPC: mode page 2Ah (from SPC 5Ah MODE SENSE) , mmc3r10g.pdf , 6.3.11 Table 364 ACh GET PERFORMANCE, Type 03h , mmc5r03c.pdf , 6.8.5.3 Table 312

Definition at line 646 of file libburn.h.