From 4faad4cb40c78b4600af3a8e771c8c5e6f79a3e0 Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Tue, 23 Oct 2007 12:24:24 +0000
Subject: [PATCH] Added fifo_size to struct isoburn_source_opts

---
 libisoburn/trunk/src/isoburn.c            | 10 ++++++++--
 libisoburn/trunk/src/libisoburn.h         | 18 +++++++++++++++++-
 libisoburn/trunk/test/xorriso_timestamp.h |  2 +-
 3 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/libisoburn/trunk/src/isoburn.c b/libisoburn/trunk/src/isoburn.c
index 012694ea..c58ea2ab 100644
--- a/libisoburn/trunk/src/isoburn.c
+++ b/libisoburn/trunk/src/isoburn.c
@@ -238,7 +238,7 @@ int isoburn_prepare_disc_aux(struct burn_drive *d, struct burn_disc **disc,
  struct isoburn *o;
  struct ecma119_source_opts wopts;
  enum burn_disc_status state;
- int ret;
+ int ret, chunks;
 
  ret= isoburn_find_emulator(&o, d, 0);
  if(ret<0 || o==NULL)
@@ -295,7 +295,13 @@ int isoburn_prepare_disc_aux(struct burn_drive *d, struct burn_disc **disc,
  
  /* TODO check return values for failure. propertly clean-up on error */
 
- o->fifo = burn_fifo_source_new(wsrc, 2048, 2000, 0);
+ chunks= 32;
+ if(opts->fifo_size >= 64*1024 && opts->fifo_size <= 1024.0 * 1024.0 * 1024.0){
+   chunks= opts->fifo_size/2048;
+   if(chunks*2048 < opts->fifo_size)
+     chunks++;
+ }
+ o->fifo = burn_fifo_source_new(wsrc, 2048, chunks, 0);
  burn_source_free(wsrc);
  if (o->fifo == NULL) {
    fprintf(stderr, "Cannot attach fifo\n");
diff --git a/libisoburn/trunk/src/libisoburn.h b/libisoburn/trunk/src/libisoburn.h
index 02870d99..429da1cf 100644
--- a/libisoburn/trunk/src/libisoburn.h
+++ b/libisoburn/trunk/src/libisoburn.h
@@ -107,9 +107,12 @@ struct isoburn_read_opts {
 };
 
 /**
- * Options for image generation.
+ * Options for image generation by libisofs and image transport to libburn.
  */
 struct isoburn_source_opts {
+
+    /* Options for image generation */
+
     int level;  /**< ISO level to write at. */
     int flags;  /**< Which extensions to support. */
     int relaxed_constraints; /**< see ecma119_relaxed_constraints_flag */
@@ -168,6 +171,19 @@ struct isoburn_source_opts {
     uid_t uid; /**< uid to use when replace_uid is set. */
     char *input_charset; /**< NULL to use default charset */
     char *ouput_charset; /**< NULL to use default charset */
+
+
+    /* Options for image transport */
+
+    /** The number of bytes to be used for the fifo which decouples libisofs
+        and libburn for better throughput and for reducing the risk of
+        interrupting signals hitting the libburn thread which operates the
+        MMC drive.
+        The size will be rounded up to the next full 2048.
+        Minimum is 64kiB, maximum is 1 GiB (but that is too much anyway).
+    */
+    int fifo_size;
+
 };
 
 /** Load the ISO filesystem directory tree from the media in the given drive.
diff --git a/libisoburn/trunk/test/xorriso_timestamp.h b/libisoburn/trunk/test/xorriso_timestamp.h
index 4a72f98f..0f686e30 100644
--- a/libisoburn/trunk/test/xorriso_timestamp.h
+++ b/libisoburn/trunk/test/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2007.10.22.211928"
+#define Xorriso_timestamP "2007.10.23.122349"