From e82b7005ada9b741640ea157522bf4ce95925b79 Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Sun, 23 May 2010 07:25:41 +0000
Subject: [PATCH] New write extension option isoburn_igopt_no_emul_toc

---
 libisoburn/isoburn.c        | 14 +++++++++++++-
 libisoburn/isoburn.h        |  5 +++++
 libisoburn/libisoburn.h     |  7 +++++++
 xorriso/xorriso_timestamp.h |  2 +-
 4 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/libisoburn/isoburn.c b/libisoburn/isoburn.c
index 1141c0b5..2fbf46e7 100644
--- a/libisoburn/isoburn.c
+++ b/libisoburn/isoburn.c
@@ -465,6 +465,15 @@ int isoburn_prepare_disc_aux(struct burn_drive *in_d, struct burn_drive *out_d,
                         opts->vol_expiration_time, opts->vol_effective_time,
                         opts->vol_uuid);
 
+ if(opts->no_emul_toc) {
+   if(out_o->nwa == out_o->zero_nwa &&
+      out_o->zero_nwa == Libisoburn_overwriteable_starT &&
+      out_o->emulation_mode == 1) {
+     out_o->nwa= 0;
+     out_o->zero_nwa= 0;
+     out_o->min_start_byte= 0;
+   }
+ }
  ret = isoburn_disc_track_lba_nwa(out_d, NULL, 0, &lba, &nwa);
  opts->effective_lba= nwa;
  ret= isoburn_get_msc2(out_o, NULL, &nwa, 0);
@@ -574,6 +583,7 @@ int isoburn_prepare_blind_grow(struct burn_drive *d, struct burn_disc **disc,
    o->nwa= o->zero_nwa= 0;
  else
    o->zero_nwa= 0;
+ o->min_start_byte= 0;
  ret= isoburn_prepare_disc_aux(d, out_drive, disc, opts, 2);
  if (ret<=0)
    return ret;
@@ -908,6 +918,7 @@ int isoburn_igopt_set_extensions(struct isoburn_imgen_opts *o, int ext)
  o->aaip= !!(ext & 32);
  o->session_md5= !!(ext & 64);
  o->file_md5= (ext & (128 | 256)) >> 7;
+ o->no_emul_toc= !!(ext & 512);
  return(1);
 }
 
@@ -916,7 +927,8 @@ int isoburn_igopt_get_extensions(struct isoburn_imgen_opts *o, int *ext)
 {
  *ext= (!!o->rockridge) | ((!!o->joliet)<<1) | ((!!o->iso1999)<<2) |
        ((!!o->hardlinks) << 3) | ((!!o->aaip) << 5) |
-       ((!!o->session_md5) << 6) | ((o->file_md5 & 3) << 7);
+       ((!!o->session_md5) << 6) | ((o->file_md5 & 3) << 7) |
+       ((!!o->no_emul_toc) << 9);
  return(1);
 }
 
diff --git a/libisoburn/isoburn.h b/libisoburn/isoburn.h
index 839f0a09..03323ecc 100644
--- a/libisoburn/isoburn.h
+++ b/libisoburn/isoburn.h
@@ -340,6 +340,11 @@ struct isoburn_imgen_opts {
      */
     unsigned int file_md5 :2;
 
+    /* On overwriteable media or random access files do not write the first
+       session to LBA 32, but rather to LBA 0 directly.
+     */
+    unsigned int no_emul_toc :1;
+
     /* relaxed constraints */
 
     /*
diff --git a/libisoburn/libisoburn.h b/libisoburn/libisoburn.h
index b3e4d3e7..97d130ae 100644
--- a/libisoburn/libisoburn.h
+++ b/libisoburn/libisoburn.h
@@ -945,6 +945,12 @@ int isoburn_igopt_get_level(struct isoburn_imgen_opts *o, int *level);
                  compare this with the MD5 of the actual copying. If they do
                  not match then issue MISHAP event.
                  See also libisofs.h  iso_write_opts_set_record_md5()
+           bit9= no_emul_toc
+                 @since 0.5.8
+                 On overwriteable media or random access files do not write
+                 the first session to LBA 32 and do not copy the first 64kB
+                 of the first session to LBA 0, but rather write the first
+                 session to LBA 0 directly.
     @return 1 success, <=0 failure
 */
 #define isoburn_igopt_rockridge         1
@@ -955,6 +961,7 @@ int isoburn_igopt_get_level(struct isoburn_imgen_opts *o, int *level);
 #define isoburn_igopt_session_md5      64
 #define isoburn_igopt_file_md5        128
 #define isoburn_igopt_file_stability  256
+#define isoburn_igopt_no_emul_toc     512
 int isoburn_igopt_set_extensions(struct isoburn_imgen_opts *o, int ext);
 int isoburn_igopt_get_extensions(struct isoburn_imgen_opts *o, int *ext);
 
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index c590d4fc..14f784ca 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2010.05.21.134500"
+#define Xorriso_timestamP "2010.05.23.072450"