From d41461ad40525286e075b5b09ff6d1f84deb77e9 Mon Sep 17 00:00:00 2001
From: Klaus Schmidinger <vdr@tvdr.de>
Date: Sun, 17 May 2009 10:07:17 +0200
Subject: [PATCH] Added a note about the meaning of PERCENTAGEDELTA in
 cRingBuffer::UpdatePercentage()

---
 CONTRIBUTORS | 1 +
 HISTORY      | 2 ++
 ringbuffer.c | 4 ++--
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 7ae876a6..15b4ebf3 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -1075,6 +1075,7 @@ Rolf Ahrenberg <rahrenbe@cc.hut.fi>
  for adding cap_sys_nice to the capabilities that are not dropped
  for adding cThread::SetIOPriority() and using it in cRemoveDeletedRecordingsThread
  for suggesting to introduce cDevice::GetOsdSize()
+ for adding a note about the meaning of PERCENTAGEDELTA in cRingBuffer::UpdatePercentage()
 
 Ralf Klueber <ralf.klueber@vodafone.com>
  for reporting a bug in cutting a recording if there is only a single editing mark
diff --git a/HISTORY b/HISTORY
index c45a7b19..36a3da0e 100644
--- a/HISTORY
+++ b/HISTORY
@@ -6101,3 +6101,5 @@ Video Disk Recorder Revision History
 - Removed unused 'synced' member from cTsToPes (reported by Christoph Haubrich).
 - Added a note to cTsToPes about all TS packets having to belong to the same PID
   (suggested by Christoph Haubrich).
+- Added a note about the meaning of PERCENTAGEDELTA in cRingBuffer::UpdatePercentage()
+  (thanks to Rolf Ahrenberg).
diff --git a/ringbuffer.c b/ringbuffer.c
index 25a01596..fd8123ec 100644
--- a/ringbuffer.c
+++ b/ringbuffer.c
@@ -7,7 +7,7 @@
  * Parts of this file were inspired by the 'ringbuffy.c' from the
  * LinuxDVB driver (see linuxtv.org).
  *
- * $Id: ringbuffer.c 2.1 2009/03/01 11:20:34 kls Exp $
+ * $Id: ringbuffer.c 2.2 2009/05/17 10:05:17 kls Exp $
  */
 
 #include "ringbuffer.h"
@@ -43,7 +43,7 @@ void cRingBuffer::UpdatePercentage(int Fill)
 {
   if (Fill > maxFill)
      maxFill = Fill;
-  int percent = Fill * 100 / (Size() - 1) / PERCENTAGEDELTA * PERCENTAGEDELTA;
+  int percent = Fill * 100 / (Size() - 1) / PERCENTAGEDELTA * PERCENTAGEDELTA; // clamp down to nearest quantum
   if (percent != lastPercent) {
      if (percent >= PERCENTAGETHRESHOLD && percent > lastPercent || percent < PERCENTAGETHRESHOLD && lastPercent >= PERCENTAGETHRESHOLD) {
         dsyslog("buffer usage: %d%% (tid=%d)", percent, getThreadTid);