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<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=036245509-25092006>Hi Roland,</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=036245509-25092006></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=036245509-25092006>thanks for the hint. Frederic Bastien told me about
your fixes and I tried them out. Thinks have improved but my Tremor version
still suffers from remaining memory leaks. The solution for my
application will probably be that I am going to use different heaps
for different OggVorbis channels. After haveing finished a stream on one
channel, I am going to clear the corresponding heap. This is not the most
elegant methode but it seems to make things save. And luckyly I have enough
memory for the needed heaps.</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=036245509-25092006></SPAN></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=036245509-25092006>Thanks and best regards,</SPAN></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial color=#0000ff size=2><SPAN
class=036245509-25092006>Markus</SPAN></FONT></DIV><BR>
<DIV class=OutlookMessageHeader lang=de dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>Von:</B> Roland Wintersteller
[mailto:rwinters@europe.com] <BR><B>Gesendet:</B> Samstag, 23. September 2006
12:44<BR><B>An:</B> Lorber, Markus<BR><B>Betreff:</B> AW: [Tremor] Question to
memory leaks in Tremor<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial; mso-ansi-language: EN-GB">Hi
Markus, <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial; mso-ansi-language: EN-GB"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><SPAN class=GramE><FONT face=Arial color=navy size=2><SPAN
lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial; mso-ansi-language: EN-GB">it’s</SPAN></FONT></SPAN><FONT
face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial; mso-ansi-language: EN-GB">
more than 2 years ago when I worked on tremor. Here a links to that what I found
out during my investigations…<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial; mso-ansi-language: EN-GB"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial; mso-ansi-language: EN-GB"><A
href="http://lists.xiph.org/pipermail/tremor/2004-April/000965.html">http://lists.xiph.org/pipermail/tremor/2004-April/000965.html</A><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial; mso-ansi-language: EN-GB"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial; mso-ansi-language: EN-GB">Have
fun and best regards, Roland <o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN lang=EN-GB
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial; mso-ansi-language: EN-GB"><o:p> </o:p></SPAN></FONT></P>
<DIV>
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<HR align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">Von:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">
tremor-bounces@xiph.org [mailto:tremor-bounces@xiph.org] <B><SPAN
style="FONT-WEIGHT: bold">Im Auftrag von </SPAN></B>Lorber, Markus<BR><B><SPAN
style="FONT-WEIGHT: bold">Gesendet:</SPAN></B> Mittwoch, 20. September 2006
16:12<BR><B><SPAN style="FONT-WEIGHT: bold">An:</SPAN></B> <st1:PersonName
w:st="on">tremor@xiph.org</st1:PersonName><BR><B><SPAN
style="FONT-WEIGHT: bold">Betreff:</SPAN></B> [Tremor] Question to memory leaks
in Tremor</SPAN></FONT><o:p></o:p></P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P>
<DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hello,</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I am working with Tremor (codec
source as of date 2002 09 02, version 1.0.0) on a Blackfin DSP. Basically my
implementaion works but there remains a problem with memory leaks. If I playback
an OggVorbis File several times (were I always call ov_open_callbacks(),...,
ov_read(), ov_clear() similar to the example code), it ends up in a
DSP-exception because of a heap overflow.</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I found some hints in the Tremor
forum that there exists a memory leak problem. Is that correct or could it be
that I do a wrong usage of the API-functions (e.g.
ov_clear())? </SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I am planing to do a work-around by
implementing a list, were each pointer allocated by malloc(), calloc(),
realloc() is written to. Every free() (and if neccessary every realloc() ) would
clear the corresponding pointer in the list. Finally after having finished an
OggVorbis stream, I would do a free() on each pointer remaining after ov_clear()
to clean up the heap.</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">My question now is: Does enyone have
suggestions for a better work-around or does a newer version of Tremor exist,
which overcomes the</SPAN></FONT> <FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">memory leak
problem?</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thank you and best
regards,</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Markus</SPAN></FONT><o:p></o:p></P></DIV></DIV></BODY></HTML>