Made single track TAO work without fixed size (compile -experimental)

libburn/sector.c

@@ -125,7 +125,7 @@ static void get_bytes(struct burn_track *track, int count, unsigned char *data)
 		valid = track->source->read(track->source, data + curr, count - curr);
 	} else valid = 0;
 
-	if (valid == -1) {
+	if (valid <= 0) { /* ts A61031 : extended from (valid == -1) */
 		track->eos = 1;
 		valid = 0;
 	}
@@ -159,6 +159,12 @@ static void get_bytes(struct burn_track *track, int count, unsigned char *data)
 	if (!shortage)
 		goto ex;
 
+	/* ts A61031 */
+	if (shortage >= count)
+		track->track_data_done = 1;
+	if (track->open_ended)
+		goto ex;
+
 /* If we're still short, and there's a "next" pointer, we pull from that.
    if that depletes, we'll just fill with 0s.
 */
@@ -233,6 +239,32 @@ static unsigned char *get_sector(struct burn_write_opts *opts, int inmode)
 	return ret;
 }
 
+/* ts A61031 */
+/* Revoke the counting of the most recent sector handed out by get_sector() */
+static void unget_sector(struct burn_write_opts *opts, int inmode)
+{
+	struct burn_drive *d = opts->drive;
+	struct buffer *out = d->buffer;
+	int outmode;
+	int seclen;
+
+	outmode = get_outmode(opts);
+	if (outmode == 0)
+		outmode = inmode;
+
+	/* ts A61009 : react on eventual failure of burn_sector_length()
+			(should not happen if API tested properly).
+			Ensures out->bytes >= out->sectors  */
+	seclen = burn_sector_length(outmode);
+	if (seclen <= 0)
+		return NULL;
+	seclen += burn_subcode_length(outmode);
+
+	out->bytes -= seclen;
+	out->sectors--;
+}
+
+
 /* either inmode == outmode, or outmode == raw.  anything else is bad news */
 /* ts A61010 : changed type to int in order to propagate said bad news */
 /** @return 1 is ok, <= 0 is failure */
@@ -598,6 +630,12 @@ int sector_data(struct burn_write_opts *o, struct burn_track *t, int psub)
 	if (convert_data(o, t, t->mode, data) <= 0)
 		return 0;
 
+	/* ts A61031 */
+	if (t->open_ended && t->track_data_done) {
+		unget_sector(o, t->mode);
+		return 2;
+	}
+
 	if (!t->source->read_sub)
 		subcode_user(o, subs, t->entry->point,
 			     t->entry->control, 1, &t->isrc, psub);

libburn/source.c

@@ -22,6 +22,10 @@ enum burn_source_status burn_track_set_source(struct burn_track *t,
 		return BURN_SOURCE_FAILED;
 	s->refcount++;
 	t->source = s;
+
+	/* ts A61031 */
+	t->open_ended= (s->get_size(s) <= 0);
+
 	return BURN_SOURCE_OK;
 }
 

libburn/structure.c

@@ -115,6 +115,12 @@ struct burn_track *burn_track_create(void)
 	t->pad = 1;
 	t->entry = NULL;
 	t->source = NULL;
+
+	/* ts A61031 */
+	t->eos = 0;
+	t->open_ended = 0;
+	t->track_data_done = 0;
+
 	t->postgap = 0;
 	t->pregap1 = 0;
 	t->pregap2 = 0;
@@ -318,6 +324,18 @@ int burn_track_get_sectors(struct burn_track *t)
 	return sectors;
 }
 
+/* ts A61031 */
+int burn_track_is_open_ended(struct burn_track *t)
+{
+	return !!t->open_ended;
+}
+
+/* ts A61031 */
+int burn_track_is_data_done(struct burn_track *t)
+{
+        return !!t->track_data_done;
+}
+
 int burn_track_get_shortage(struct burn_track *t)
 {
 	int size;

libburn/structure.h

@@ -31,6 +31,13 @@ struct burn_track
 	struct burn_source *source;
 	/** End of Source flag */
 	int eos;
+
+	/* ts A61031 */
+	/** Source is of undefined length */
+	int open_ended;
+	/** End of open ended track flag : offset+payload+tail are delivered */
+	int track_data_done;
+
 	/** The audio/data mode for the entry. Derived from control and
 	    possibly from reading the track's first sector. */
 	int mode;
@@ -71,4 +78,10 @@ struct burn_disc
 
 int burn_track_get_shortage(struct burn_track *t);
 
+
+/* ts A61031 : might go to libburn.h */
+int burn_track_is_open_ended(struct burn_track *t);
+int burn_track_is_data_done(struct burn_track *t);
+
+
 #endif /* BURN__STRUCTURE_H */

libburn/write.c

@@ -469,7 +469,7 @@ int burn_write_track(struct burn_write_opts *o, struct burn_session *s,
 {
 	struct burn_track *t = s->track[tnum];
 	struct burn_drive *d = o->drive;
-	int i, tmp = 0;
+	int i, tmp = 0, open_ended = 0;
 	int sectors;
 
 	d->rlba = -150;
@@ -505,6 +505,11 @@ int burn_write_track(struct burn_write_opts *o, struct burn_session *s,
 
 /* user data */
 	sectors = burn_track_get_sectors(t);
+	open_ended = burn_track_is_open_ended(t);
+
+	/* <<< ts A61031 */
+	fprintf(stderr, "libburn_experimental: sectors= %d , open_ended= %d\n",
+		sectors,open_ended);
 
 	/* Update progress */
 	d->progress.start_sector = d->nwa;
@@ -521,7 +526,7 @@ int burn_write_track(struct burn_write_opts *o, struct burn_session *s,
 	if (tnum == s->tracks)
 		tmp = sectors > 150 ? 150 : sectors;
 
-	for (i = 0; i < sectors - tmp; i++) {
+	for (i = 0; open_ended || i < sectors - tmp; i++) {
 
 		/* ts A61023 : http://libburn.pykix.org/ticket/14
                                From time to time inquire drive buffer */
@@ -531,6 +536,13 @@ int burn_write_track(struct burn_write_opts *o, struct burn_session *s,
 		if (!sector_data(o, t, 0))
 			return 0;
 
+		/* ts A61031 */
+		if (open_ended) {
+			d->progress.sectors = sectors = i;
+                        if (burn_track_is_data_done(t)) 
+	break;
+		}
+
 		/* update current progress */
 		d->progress.sector++;
 	}