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New API function isoburn_prepare_blind_grow() for -as mkisofs -multi

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This commit is contained in:
Thomas Schmitt
2008-07-05 13:25:06 +00:00
parent 837f60c2e4
commit 88ef7d06f4
7 changed files with 224 additions and 44 deletions
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41
libisoburn/isoburn.h
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@ -60,9 +60,17 @@ struct isoburn {
*/
int fabricated_msc1;
/* If >= 0, this address is used in isoburn_disc_track_lba_nwa()
as reply parameter nwa.
(The other nwa parameters below apply only to the effective write address
on random access media. msc2 is handed to libisofs but not to libburn.)
*/
int fabricated_msc2;
/* The nwa to be used for a first session on the present kind of overwriteable
media (usually Libisoburn_overwriteable_starT, but might be forced to 0)
*/
*/
int zero_nwa;
/* Start address as given by image examination (bytes, not blocks) */
@ -71,6 +79,7 @@ struct isoburn {
/* Aligned start address to be used for processing (counted in blocks) */
int nwa;
/* Truncate to .nwa an eventual regular file serving as output drive */
int truncate;
@ -99,6 +108,10 @@ struct isoburn {
/* Libisofs image context */
IsoImage *image;
/* The block data source from which the existing image is read.
*/
IsoDataSource *iso_data_source;
/* The burn source which transfers data from libisofs to libburn.
It has its own fifo.
*/
@ -190,6 +203,19 @@ int isoburn_msgs_submit(struct isoburn *o, int error_code, char msg_text[],
*/
int isoburn_set_start_byte(struct isoburn *o, off_t value, int flag);
/** Obtains the image address offset to be used with image generation.
This is either the (emulated) drive nwa or a value set by
isoburn_prepare_blind_grow().
In any case this is the address to tell to iso_write_opts_set_ms_block().
@param o The isoburn object to be inquired
@param opts If not NULL: write parameters to be set on drive before query
@param msc2 The value to be used with iso_write_opts_set_ms_block()
@param flag unused yet
@return <=0 is failure , >0 success
*/
int isoburn_get_msc2(struct isoburn *o,
struct burn_write_opts *opts, int *msc2, int flag);
/** Get a data source suitable for read from a drive using burn_read_data()
function.
@param d drive to read from. Must be grabbed.
@ -200,6 +226,19 @@ int isoburn_set_start_byte(struct isoburn *o, off_t value, int flag);
IsoDataSource *
isoburn_data_source_new(struct burn_drive *d);
/** Disable read capabilities of a data source which was originally created
by isoburn_data_source_new(). After this any attempt to read will yield
a FATAL programming error event.
This is usually done to allow libburn to release the drive while libisofs
still holds a reference to the data source object. libisofs is not supposed
to use this object for reading any more, nevertheless. The disabled state
of the data source is a safety fence around this daring situation.
@param src The data source to be disabled
@param flag unused yet
@return <=0 is failure , >0 success
*/
int isoburn_data_source_shutdown(IsoDataSource *src, int flag);
/**
* Options for image reading.