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Taking the complete size of available data into account when deciding whether to clear the transfer buffer to avoid overflows

This commit is contained in:
Klaus Schmidinger 2004-10-23 13:40:56 +02:00
parent af6b8ff533
commit f0a7e75d8e
3 changed files with 6 additions and 2 deletions
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2
CONTRIBUTORS
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@ -873,6 +873,8 @@ Reinhard Nissl <rnissl@gmx.de>
for suggesting to make sure the OSD reports oeWrongAlignment errors before any for suggesting to make sure the OSD reports oeWrongAlignment errors before any
oeAreasOverlap error oeAreasOverlap error
for reporting a a crash in the time search mechanism for reporting a a crash in the time search mechanism
for taking the complete size of available data into account when deciding whether
to clear the transfer buffer to avoid overflows
Richard Robson <richard_robson@beeb.net> Richard Robson <richard_robson@beeb.net>
for reporting freezing replay if a timer starts while in Transfer Mode from the for reporting freezing replay if a timer starts while in Transfer Mode from the

2
HISTORY
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@ -3052,3 +3052,5 @@ Video Disk Recorder Revision History
- Removed the usleep() call from cDvbPlayer::Action() to make VDR run on NPTL - Removed the usleep() call from cDvbPlayer::Action() to make VDR run on NPTL
systems (thanks to Alfred Zastrow). The NPTL check at startup has also been systems (thanks to Alfred Zastrow). The NPTL check at startup has also been
removed. removed.
- Taking the complete size of available data into account when deciding whether
to clear the transfer buffer to avoid overflows (thanks to Reinhard Nissl).

4
transfer.c
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and * See the main source file 'vdr.c' for copyright information and
* how to reach the author. * how to reach the author.
* *
* $Id: transfer.c 1.17 2004/10/16 09:22:58 kls Exp $ * $Id: transfer.c 1.18 2004/10/23 13:35:08 kls Exp $
*/ */
#include "transfer.h" #include "transfer.h"
@ -65,7 +65,7 @@ void cTransfer::Action(void)
int Count; int Count;
uchar *b = ringBuffer->Get(Count); uchar *b = ringBuffer->Get(Count);
if (b) { if (b) {
if (Count > TRANSFERBUFSIZE * 2 / 3) { if (ringBuffer->Available() > TRANSFERBUFSIZE * 9 / 10) {
// If the buffer runs full, we have no chance of ever catching up // If the buffer runs full, we have no chance of ever catching up
// since the data comes in at the same rate as it goes out (it's "live"). // since the data comes in at the same rate as it goes out (it's "live").
// So let's clear the buffer instead of suffering from permanent // So let's clear the buffer instead of suffering from permanent