From: Andre Noll <maan@systemlinux.org>
Date: Sun, 1 Mar 2009 21:08:23 +0000 (+0100)
Subject: fecdec: Add some more documentation, minor improvements.
X-Git-Tag: v0.3.4~57^2~2
X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=commitdiff_plain;h=30496a3da233a6cfb0b1005b808e8d1064cb91ff

fecdec: Add some more documentation, minor improvements.
---

diff --git a/fecdec_filter.c b/fecdec_filter.c
index 5c01a039..6ca0b037 100644
--- a/fecdec_filter.c
+++ b/fecdec_filter.c
@@ -162,6 +162,7 @@ static struct fecdec_group *free_oldest_group(struct private_fecdec_data *pfd)
 	return oldest;
 }
 
+/* returns 1 if the group was found, 0 if not, negative on errors */
 static int get_group(struct fec_header *h, struct private_fecdec_data *pfd,
 		struct fecdec_group **result)
 {
@@ -180,18 +181,26 @@ static int get_group(struct fec_header *h, struct private_fecdec_data *pfd,
 	if (fg)
 		goto success;
 	fg = free_oldest_group(pfd);
+	ret = 0;
 success:
 	fg->h = *h;
 	*result = fg;
-	return 1;
+	return ret;
 }
 
+/*
+ * returns 1 if slice was added, zero otherwise (because the group was already
+ * complete). In any case the number of received slices is being increased by
+ * one.
+ */
 static int add_slice(char *buf, struct fecdec_group *fg)
 {
 	int r, slice_num;
 
-	if (group_complete(fg))
+	if (group_complete(fg)) {
+		fg->num_received_slices++;
 		return 0;
+	}
 	slice_num = fg->h.slice_num;
 	if (fg->num_slices == 0) {
 		fg->num_slices = fg->h.slices_per_group;
@@ -263,6 +272,7 @@ static int read_fec_header(char *buf, size_t len, struct fec_header *h)
 	return 1;
 }
 
+/* returns 1 if we used the buffer, 0 if we didn't, negative on errors */
 static int dispatch_slice(char *buf, size_t len, struct fec_header *h,
 		struct filter_node *fn)
 {