2008-01-10 15:20:57 +00:00
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/*
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API definition of libisoburn.
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Copyright 2007 Vreixo Formoso Lopes <metalpain2002@yahoo.es>
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and Thomas Schmitt <scdbackup@gmx.net>
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*/
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/**
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libisoburn is a frontend for libraries libburn and libisofs which enables
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creation and expansion of ISO-9660 filesystems on all CD/DVD media supported
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by libburn. This includes media like DVD+RW, which do not support multi-session
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management on media level and even plain disk files or block devices.
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The price for that is thorough specialization on data files in ISO-9660
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filesystem images. So libisoburn is not suitable for audio (CD-DA) or any
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other CD layout which does not entirely consist of ISO-9660 sessions.
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The priciple of this frontend is that you may use any call of libisofs or
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libburn unless it has a isoburn_*() wrapper listed in the following function
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documentation.
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E.g. call isoburn_initialize() rather than iso_init(); burn_initialize()
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and call isoburn_drive_scan_and_grab() rather than burn_drive_scan_and_grab().
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But you may call burn_disc_get_profile() directly if you want to display
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the media type.
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>>>
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>>> Take into respect Vreixo's (mandatory ?) shortcuts which are to come
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>>>
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The usage model is like with libburn: the target is a "media" in a "drive".
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The wrappers will transparently provide the necessary emulations which
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are appropriate for particular target "drives".
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*/
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/* API functions */
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/** Initialize libisoburn, libisofs and libburn.
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Wrapper for : iso_init() and burn_initialize()
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2008-01-26 11:36:58 +00:00
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@param reason A character array for eventual messages (e.g. with errors)
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@param flag Bitfield for control purposes (unused yet, submit 0)
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2008-01-10 15:20:57 +00:00
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@return 1 indicates success, 0 is failure
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*/
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2008-01-26 11:36:58 +00:00
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int isoburn_initialize(char msg[1024], int flag);
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2008-01-10 15:20:57 +00:00
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2008-01-26 12:06:26 +00:00
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/** Obtain the three release version numbers of the library.
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@param major The maturity version (0 for now, as we are still learning)
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@param minor The development goal version.
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@param micro The development step version. This has an additional meaning:
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Pare numbers indicate a version with frozen API. I.e. you can
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rely on the same set of features to be present in all
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published releases with that major.minor.micro combination.
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Odd numbers indicate that API upgrades are in progress.
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I.e. new features might be already present or they might
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be still missing. You need to check before compiling an
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application which relies on freshly introduced features.
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*/
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void isoburn_version(int *major, int *minor, int *micro);
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2008-01-10 15:20:57 +00:00
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/** Aquire a target drive by its filesystem path resp. libburn persistent
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address.
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Wrapper for: burn_drive_scan_and_grab()
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*/
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int isoburn_drive_scan_and_grab(struct burn_drive_info *drive_infos[],
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char* adr, int load);
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/** Aquire a drive from the burn_drive_info[] array which was obtained by
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a previous call of burn_drive_scan().
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Wrapper for: burn_drive_grab()
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*/
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int isoburn_drive_grab(struct burn_drive *drive, int load);
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/** Inquire the media status. Expect the whole spectrum of libburn BURN_DISC_*
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with multi-session media. Emulated states with random access media are
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BURN_DISC_BLANK and BURN_DISC_APPENDABLE.
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Wrapper for: burn_disc_get_status()
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*/
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enum burn_disc_status isoburn_disc_get_status(struct burn_drive *drive);
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/** Tells whether the media can be treated by isoburn_disc_erase().
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Wrapper for: burn_disc_erasable()
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*/
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int isoburn_disc_erasable(struct burn_drive *d);
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/** Mark the media as blank. With multi-session media this will call
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burn_disc_erase(). With random access media, an eventual ISO-9660
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filesystem will get invalidated by altering its start blocks on media.
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In case of success, the media is in status BURN_DISC_BLANK afterwards.
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Wrapper for: burn_disc_erase()
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*/
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void isoburn_disc_erase(struct burn_drive *drive, int fast);
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/**
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* Options for image reading.
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*/
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struct isoburn_read_opts {
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unsigned int norock:1; /*< Do not read Rock Ridge extensions */
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unsigned int nojoliet:1; /*< Do not read Joliet extensions */
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2008-01-19 09:05:13 +00:00
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unsigned int noiso1999:1; /*< Do not read ISO 9660:1999 enhanced tree */
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2008-01-10 15:20:57 +00:00
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unsigned int preferjoliet:1;
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/*< When both Joliet and RR extensions are present, the RR
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* tree is used. If you prefer using Joliet, set this to 1. */
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uid_t uid; /**< Default uid when no RR */
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gid_t gid; /**< Default uid when no RR */
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mode_t mode; /**< Default mode when no RR (only permissions) */
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/**
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* Input charset for RR file names. NULL to use default locale charset.
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*/
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char *input_charset;
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/* modified by the function isoburn_read_image */
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unsigned int hasRR:1; /*< It will be set to 1 if RR extensions are present,
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to 0 if not. */
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unsigned int hasJoliet:1; /*< It will be set to 1 if Joliet extensions are
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present, to 0 if not. */
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2008-01-19 09:05:13 +00:00
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/**
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* It will be set to 1 if the image is an ISO 9660:1999, i.e. it has
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* a version 2 Enhanced Volume Descriptor.
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*/
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unsigned int hasIso1999:1;
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/** It will be set to 1 if El-Torito boot record is present, to 0 if not.*/
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unsigned int hasElTorito:1;
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2008-01-10 15:20:57 +00:00
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uint32_t size; /**< Will be filled with the size (in 2048 byte block) of
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* the image, as reported in the PVM. */
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unsigned int pretend_blank:1; /* always create empty image */
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};
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/**
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* Options for image generation by libisofs and image transport to libburn.
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*/
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struct isoburn_source_opts {
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/* Options for image generation */
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int level; /**< ISO level to write at. */
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/** Which extensions to support. */
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unsigned int rockridge :1;
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unsigned int joliet :1;
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2008-01-19 09:05:13 +00:00
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unsigned int iso1999 :1;
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2008-01-10 15:20:57 +00:00
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/* relaxed constraints */
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2008-01-19 09:05:13 +00:00
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/*
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* Relaxed constraints. Setting any of these to 1 break the specifications,
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* but it is supposed to work on most moderns systems. Use with caution.
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*/
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/**
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* Omit the version number (";1") at the end of the ISO-9660 identifiers.
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* Version numbers are usually not used.
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*/
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2008-01-10 15:20:57 +00:00
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unsigned int omit_version_numbers :1;
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2008-01-19 09:05:13 +00:00
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/**
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* Allow ISO-9660 directory hierarchy to be deeper than 8 levels.
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*/
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2008-01-10 15:20:57 +00:00
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unsigned int allow_deep_paths :1;
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2008-01-19 09:05:13 +00:00
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/**
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* Allow path in the ISO-9660 tree to have more than 255 characters.
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*/
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unsigned int allow_longer_paths :1;
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/**
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* Allow a single file or directory hierarchy to have up to 37 characters.
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* This is larger than the 31 characters allowed by ISO level 2, and the
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* extra space is taken from the version number, so this also forces
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* omit_version_numbers.
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*/
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2008-01-14 16:37:38 +00:00
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unsigned int max_37_char_filenames :1;
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2008-01-19 09:05:13 +00:00
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/**
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* ISO-9660 forces filenames to have a ".", that separates file name from
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* extension. libisofs adds it if original filename doesn't has one. Set
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* this to 1 to prevent this behavior
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*/
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2008-01-14 16:37:38 +00:00
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unsigned int no_force_dots :1;
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2008-01-19 09:05:13 +00:00
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/**
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* Allow lowercase characters in ISO-9660 filenames. By default, only
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* uppercase characters, numbers and a few other characters are allowed.
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*/
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2008-01-14 16:37:38 +00:00
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unsigned int allow_lowercase :1;
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2008-01-19 09:05:13 +00:00
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/**
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* Allow all ASCII characters to be appear on an ISO-9660 filename. Note
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* that "/" and "\0" characters are never allowed, even in RR names.
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*/
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2008-01-14 16:37:38 +00:00
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unsigned int allow_full_ascii :1;
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2008-01-19 09:05:13 +00:00
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/**
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* Allow paths in the Joliet tree to have more than 240 characters.
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*/
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2008-01-10 15:20:57 +00:00
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unsigned int joliet_longer_paths :1;
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unsigned int sort_files:1;
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/**< If files should be sorted based on their weight. */
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/**
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* The following options set the default values for files and directory
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* permissions, gid and uid. All these take one of three values: 0, 1 or 2.
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* If 0, the corresponding attribute will be kept as set in the IsoNode.
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* Unless you have changed it, it corresponds to the value on disc, so it
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* is suitable for backup purposes. If set to 1, the corresponding attrib.
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* will be changed by a default suitable value. Finally, if you set it to
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* 2, the attrib. will be changed with the value specified in the options
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* below. Note that for mode attributes, only the permissions are set, the
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* file type remains unchanged.
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*/
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unsigned int replace_dir_mode :2;
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unsigned int replace_file_mode :2;
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unsigned int replace_uid :2;
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unsigned int replace_gid :2;
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mode_t dir_mode; /** Mode to use on dirs when replace_dir_mode == 2. */
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mode_t file_mode; /** Mode to use on files when replace_file_mode == 2. */
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uid_t uid; /** uid to use when replace_uid == 2. */
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gid_t gid; /** gid to use when replace_gid == 2. */
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2008-01-11 17:55:21 +00:00
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char *output_charset; /**< NULL to use default charset */
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2008-01-10 15:20:57 +00:00
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/* Options for image transport */
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/** The number of bytes to be used for the fifo which decouples libisofs
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and libburn for better throughput and for reducing the risk of
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interrupting signals hitting the libburn thread which operates the
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MMC drive.
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The size will be rounded up to the next full 2048.
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Minimum is 64kiB, maximum is 1 GiB (but that is too much anyway).
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*/
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int fifo_size;
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};
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/** Get the image attached to a drive, if any.
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@return A reference to attached image, or NULL if the drive has no image
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attached. This reference needs to be released via iso_image_unref()
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when it is not longer needed.
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*/
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IsoImage *isoburn_get_attached_image(struct burn_drive *d);
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/** Load the ISO filesystem directory tree from the media in the given drive.
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This will give libisoburn the base on which it can let libisofs perform
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image growing or image modification. The loaded volset gets attached
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to the drive object and handed out to the application.
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Not a wrapper, but peculiar to libisoburn.
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@param d The drive which holds an existing ISO filesystem or blank media.
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d is allowed to be NULL which produces an empty ISO image. In
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this case one has to call before writing isoburn_attach_volset()
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with the volset from this call and with the intended output
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drive.
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@param read_opts The read options which can be chosen by the application
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@param image the image read, if the disc is blank it will have no files.
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This reference needs to be released via iso_image_unref() when
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it is not longer needed. The drive, if not NULL, will hold an
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own reference which it will release when it gets a new volset
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or when it gets released via isoburn_drive_release().
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You can pass NULL if you already have a reference or you plan to
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obtain it later with isoburn_get_attached_image(). Of course, if
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you haven't specified a valid drive (i.e., if d == NULL), this
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parameter can't be NULL.
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@return <=0 error , 1 = success
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*/
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int isoburn_read_image(struct burn_drive *d,
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struct isoburn_read_opts *read_opts,
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IsoImage **image);
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/** Set the IsoImage to be used with a drive. This eventually releases
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the reference to the old IsoImage attached to the drive.
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Caution: Use with care. It hardly makes sense to replace an image that
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reflects a valid ISO image on media.
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This call is rather intended for writing a newly created and populated
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image to blank media. The use case in xorriso is to let an image survive
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the change or demise of the outdev target drive.
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@param d The drive which shall be write target of the volset.
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@param image The image that represents the image to be written.
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This image pointer MUST already be a valid reference suitable
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for iso_image_unref().
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It may have been obtained by appropriate libisofs calls or by
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isoburn_read_image() with d==NULL.
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@return <=0 error , 1 = success
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*/
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int isoburn_attach_image(struct burn_drive *d, IsoImage *image);
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/** Obtain the start block number of the most recent session on media. In
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case of random access media this will always be 0. Succesfull return is
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not a guarantee that there is a ISO-9660 image at all. The call will fail,
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nevertheless,if isoburn_disc_get_status() returns not BURN_DISC_APPENDABLE.
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Wrapper for: burn_disc_get_msc1()
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*/
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int isoburn_disc_get_msc1(struct burn_drive *d, int *start_lba);
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/** Use this with trackno==0 to obtain the predicted start block number of the
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new session. The interesting number is returned in parameter nwa.
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Wrapper for: burn_disc_track_lba_nwa()
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*/
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int isoburn_disc_track_lba_nwa(struct burn_drive *d, struct burn_write_opts *o,
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int trackno, int *lba, int *nwa);
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/** Obtain the size which was attributed to an emulated appendable on actually
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overwriteable media. This value is supposed to be <= 2048 * nwa as of
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isoburn_disc_track_lba_nwa().
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@param drive The drive holding the media.
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@param start_byte The reply value counted in bytes, not in sectors.
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@param flag Unused yet. Submit 0.
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@return 1=stat_byte is valid, 0=not an emulated appendable, -1=error
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*/
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int isoburn_get_min_start_byte(struct burn_drive *d, off_t *start_byte,
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int flag);
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/** Create a disc object for writing the new session from the created or loaded
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iso_volset which has been manipulated via libisofs, to the same media from
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where the image was eventually loaded. This struct burn_disc is ready for
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use by a subsequent call to isoburn_disc_write().
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After this asynchronous writing has ended and the drive is BURN_DRIVE_IDLE
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again, the burn_disc object has to be disposed by burn_disc_free().
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@param drive The combined source and target drive, grabbed with
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isoburn_drive_scan_and_grab(). .
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@param disc Returns the newly created burn_disc object.
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@return <=0 error , 1 = success
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*/
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int isoburn_prepare_disc(struct burn_drive *d, struct burn_disc **disc,
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struct isoburn_source_opts *opts);
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/** Create a disc object for producing a new image from a previous image
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plus the changes made by user. The generated burn_disc is suitable
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to be written to any other libburn drive. You must not use the same drive
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for writing as you are using here as source, because data will be
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read from the source drive while the target drive gets written to.
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The resulting burn_disc object has to be disposed when all its writing
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is done and the drive is BURN_DRIVE_IDLE again after asynchronous
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burn_disc_write().
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@param d The source drive, grabbed with isoburn_drive_scan_and_grab().
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@param disc Returns the newly created burn_disc object.
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@return <=0 error , 1 = success
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*/
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int isoburn_prepare_new_image(struct burn_drive *d, struct burn_disc **disc,
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struct isoburn_source_opts *opts);
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/** Start writing of the new session.
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This call is asynchrounous. I.e. it returns quite soon and the progress has
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to be watched by a loop with call burn_drive_get_status() until
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BURN_DRIVE_IDLE is returned.
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Wrapper for: burn_disc_write()
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*/
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void isoburn_disc_write(struct burn_write_opts *o, struct burn_disc *disc);
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/** Inquire state and fill parameters of the fifo which is attached to
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the emerging track. This should be done in the pacifier loop while
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isoburn_disc_write() or burn_disc_write() are active.
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Hint: If only burn_write_opts and not burn_drive is known, then the drive
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|
can be obtained by burn_write_opts_get_drive().
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@parm d The drive to which the track with the fifo gets burned.
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@param size The total size of the fifo
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@param free_bytes The current free capacity of the fifo
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@param status_text Returns a pointer to a constant text, see below
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@return <0 reply invalid, >=0 fifo status code:
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|
bit0+1=input status, bit2=consumption status, i.e:
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|
0="standby" : data processing not started yet
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|
1="active" : input and consumption are active
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2="ending" : input has ended without error
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3="failing" : input had error and ended,
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|
4="unused" : ( consumption has ended before processing start )
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|
5="abandoned" : consumption has ended prematurely
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|
6="ended" : consumption has ended without input error
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|
7="aborted" : consumption has ended after input error
|
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|
*/
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|
int isoburn_get_fifo_status(struct burn_drive *d, int *size, int *free_bytes,
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|
char **status_text);
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|
/** Inquire whether the most recent write run was successful.
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|
Wrapper for: burn_drive_wrote_well()
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|
*/
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|
int isoburn_drive_wrote_well(struct burn_drive *d);
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|
/** Call this after isoburn_disc_write has finished and burn_drive_wrote_well()
|
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|
|
indicates success. It will eventually complete the emulation of
|
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|
|
multi-session functionality, if needed at all. Let libisoburn decide.
|
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|
|
Not a wrapper, but peculiar to libisoburn.
|
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|
|
*/
|
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|
|
int isoburn_activate_session(struct burn_drive *drive);
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|
|
/** Write a new session to a disc.
|
|
|
|
This is a synchronous call equivalent to isoburn_prepare_disc +
|
|
|
|
isoburn_disc_write + isoburn_activate_session
|
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|
|
@param pacifier_func If not NULL: a function to produce appeasing messages.
|
|
|
|
See burn_abort_pacifier() in libburn.h for an example.
|
|
|
|
*/
|
|
|
|
/* TODO implement this */
|
|
|
|
int isoburn_perform_write(struct burn_write_opts *o,
|
|
|
|
int (*pacifier_func)(void *handle, int patience,
|
|
|
|
int elapsed));
|
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|
|
|
|
|
/** Release an aquired drive.
|
|
|
|
Wrapper for: burn_drive_release()
|
|
|
|
*/
|
|
|
|
void isoburn_drive_release(struct burn_drive *drive, int eject);
|
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|
|
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|
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|
|
/** Shutdown all three libraries.
|
|
|
|
Wrapper for : iso_finish() and burn_finish().
|
|
|
|
*/
|
|
|
|
void isoburn_finish(void);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
The following two calls are for expert applications only.
|
|
|
|
An application should have a special reason to use them.
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
/** Inquire wether the media needs emulation or would be suitable for
|
|
|
|
generic multi-session via libburn.
|
|
|
|
@return 0 is generic multi-session
|
|
|
|
1 is emulated multi-session
|
|
|
|
-1 is not suitable for isoburn
|
|
|
|
*/
|
|
|
|
int isoburn_needs_emulation(struct burn_drive *drive);
|
|
|
|
|
|
|
|
|