X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=fecdec_filter.c;h=8acaf8157e206c0f276eb111129f52d7255f1b02;hp=8cb17ad642098e81621e2be6f6c0643ac6de4038;hb=dd2c3baf99ebebaf269e2825a2598a20529a4224;hpb=58151b60c9782a52aac5d39ace7e69c3635ee260

diff --git a/fecdec_filter.c b/fecdec_filter.c
index 8cb17ad6..8acaf815 100644
--- a/fecdec_filter.c
+++ b/fecdec_filter.c
@@ -6,6 +6,8 @@
 
 /** \file fecdec_filter.c A filter that fec-decodes an audio stream. */
 
+#include <regex.h>
+
 #include <dirent.h>
 #include "para.h"
 #include "error.h"
@@ -38,7 +40,7 @@ struct fec_header {
 	uint8_t slices_per_group;
 	/** Number of slices needed to start decoding. */
 	uint8_t data_slices_per_group;
-	/** Size of the ogg vorbis header (zero for mp3, aac). */
+	/** Size of the ogg vorbis/wma header (zero for mp3, aac). */
 	uint32_t audio_header_size;
 	/** Number of the FEC group this slice belongs to. */
 	uint32_t group_num;
@@ -243,10 +245,21 @@ static int add_slice(char *buf, struct fecdec_group *fg)
 	return 1;
 }
 
+/**
+ * The different states of a complete FEC group.
+ *
+ * Even if a FEC group has been received successfully, it probably can not be
+ * used right away because some streams (ogg, wma) need to receive an audio
+ * file header before decoding can start.
+ */
 enum fec_group_usability {
+	/** Drop the group (because we did not receive the header yet). */
 	FEC_GROUP_UNUSABLE,
+	/** Use all data in the group. */
 	FEC_GROUP_USABLE,
+	/** Use the group, but drop its audio file header. */
 	FEC_GROUP_USABLE_SKIP_HEADER,
+	/** Use the group, including its header. */
 	FEC_GROUP_USABLE_WITH_HEADER
 };