Re: [Libcdio-devel] Re: mmc_get_disc_erasable proposition + questions

[Rocky Bernstein]

Thanks for checking this out. The bug you report should now be fixed in git.
I hope folks will verify to make sure I haven't made another mistake.

I have also updated the DVD Book types in dvd.h based on the information you
cite. I find it however as table 400 rather than 401 (on page 419).

On Sat, Feb 6, 2010 at 7:41 AM, Thomas Schmitt <address@hidden> wrote:

> Hi,
>
> Frank Endres wrote:
> > I also have one question: I have a DVD+R (Verbatim) that is not detected
> as
> > a DVD by the cdio_is_discmode_dvd function. for this media, discmode is
> > CDIO_DISCMODE_DVD_OTHER.
>
> The reason seems to be a mistake in
> include/cdio/dvd.h :
>
>  #define CDIO_DVD_BOOK_DVD_PR  8 /**< DVD+R  */
>
> This should be 10, not 8.
>
> lib/driver/gnu_linux.c has this gesture
>  ioctl (p_env->gen.fd, DVD_READ_STRUCT, &dvd)
>  switch(dvd.physical.layer[0].book_type) {
>  case CDIO_DVD_BOOK_DVD_PR: return CDIO_DISC_MODE_DVD_PR;
>
> A DVD+R of mine yields 10 here and is not
> recognized by src/cd-info --dvd :
>  Disc mode is listed as: Unknown/unclassified DVD
>
> MMC-5 Table 401 gives this list
>    0x0  DVD-ROM
>    0x1  DVD-RAM
>    0x2  DVD-R
>    0x3  DVD-RW
>    0x4  HD DVD-ROM
>    0x5  HD DVD-RAM
>    0x6  HD DVD-R
>    0x9  DVD+RW
>    0xA  DVD+R
>    0xD  DVD+RW DL
>    0xE  DVD+R DL
>
> So 0xA = 10 is indeed what a DVD+R should say if
> its book type is set to default.
> This value is adjustable by a DVD burner, though.
> (Profile would possibly lie in a DVD-ROM,
>  book type lies if told to do so.
>  One should use profile if it does not say
>  DVD-ROM or BD-ROM. Only then one should inquire
>  DVD Book Type or BD Media Type ID.)
>
>
> I changed the definition of CDIO_DVD_BOOK_DVD_PR
> to 10 for a test. Now i get:
>  Disc mode is listed as: DVD+R
>
> ------------------------------------------------
>
> Frank Endres wrote:
> > my point of view is a burning application
>
> But you don't plan to use cdrecord for writing
> to DVD+R, do you ?
>
>
> Have a nice day :)
>
> Thomas
>
>
>
>