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Preparations for DVD-R[W] DAO

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This commit is contained in:
Thomas Schmitt
2007-02-05 13:28:57 +00:00
parent 56695822a7
commit 073ff204b3
3 changed files with 46 additions and 6 deletions
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37
libburn/trunk/libburn/mmc.c
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@ -78,9 +78,14 @@ extern struct libdax_msgs *libdax_messenger;
is readable by afio. Third and forth veryfy too. Suddenly
dvd+rw-mediainfo sees lba 0 with track 2. But #2 still verifies
if one knows its address.
ts A70203 : DVD-RW need to get blanked fully. Then feature 0021h persists.
Meanwhile Incremental streaming is supported like CD TAO:
with unpredicted size, multi-track, multi-session.
ts A70205 : Beginning to implement DVD-R[W] DAO : single track and session,
size prediction mandatory.
Todo:
Determine first free lba for appending data.
Determine first free lba for appending data on overwriteables.
*/
@ -131,6 +136,10 @@ static unsigned char MMC_GET_PERFORMANCE[] =
static unsigned char MMC_READ_FORMAT_CAPACITIES[] =
{ 0x23, 0, 0, 0, 0, 0, 0, 0, 0, 0};
/* ts A70205 : To describe the layout of a DVD-R[W] DAO session */
static unsigned char MMC_RESERVE_TRACK[] =
{ 0x53, 0, 0, 0, 0, 0, 0, 0, 0, 0};
static int mmc_function_spy_do_tell = 0;
@ -191,6 +200,31 @@ void mmc_send_cue_sheet(struct burn_drive *d, struct cue_sheet *s)
}
/* ts A70205 : Announce size of a DVD-R[W] DAO session.
@param size The size in bytes to be announced to the drive.
It will get rounded up to align to 32 KiB.
*/
int mmc_reserve_track(struct burn_drive *d, off_t size)
{
struct command c;
int lba;
mmc_function_spy("mmc_reserve_track");
c.retry = 1;
c.oplen = sizeof(MMC_RESERVE_TRACK);
memcpy(c.opcode, MMC_RESERVE_TRACK, sizeof(MMC_RESERVE_TRACK));
/* Nice rounding trick learned from dvd+rw-tools */
lba = ((size + (off_t) 0x7fff) >> 11) & ~0xf;
mmc_int_to_four_char(c.opcode+5, lba);
c.page = NULL;
c.dir = NO_TRANSFER;
d->issue_command(d, &c);
return !!c.error;
}
/* ts A70201 :
Common track info fetcher for mmc_get_nwa() and mmc_fake_toc()
*/
@ -2152,6 +2186,7 @@ int mmc_setup_drive(struct burn_drive *d)
d->perform_opc = mmc_perform_opc;
d->set_speed = mmc_set_speed;
d->send_cue_sheet = mmc_send_cue_sheet;
d->reserve_track = mmc_reserve_track;
d->sync_cache = mmc_sync_cache;
d->get_nwa = mmc_get_nwa;
d->read_multi_session_c1 = mmc_read_multi_session_c1;