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a : avifile@prak.org 4 May 2005 • 10:44PM -0400

[Avifile]mono/stereo problem with i810 chipset?
by J.L.H.W. Linkels

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Hello all,

I am trying to play an asf stream on a computer with a i810 chipset. This
fails. Logging output is at the end of this mail.

Playing (stereo) MP3 files from the local LAN is fine.

As you can see in the log, the OSS renderer fails and reports that the chipset
cannot be put in the requested mode.

Then AviPlay attempts to use the SDL renderer. When this starts to play, I
hear audio at double speed for a few seconds, then silence, then audio at
double speed, and so on.

I have browsed thru the old mail archives, and it seems that there is some
problem with mono in the i810 chipset.

I wonder whether the i810 is really unable to play mono streams, or that there
is a problem in the ioctl call to control the i810, like a wrong return value
or so.

Is there maybe a workaround for this problem? Unfortunately I need an asf
_stream_, so I cannot first save the stream and convert it to stereo for
playback.

Any comments appreciated, even a confirmation of this problem. (so I know I am
not alone :-) )

jlinkels

jlinkels@daisy_pc:~$ aviplay  mms://212.33.55.236/radioooe
<init> : Avifile CVS-0.7.43-050224-14:19-(Debian
<init> : Available CPU flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr
pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
<init> : 4294.97 MHz Intel(R) Pentium(R) 4 CPU 2.00GHz processor detected
QSettings: failed to open file '/etc/qt3/qtrc'
<aviplay> : Debug is on 0
<reader> : Checking: mms://212.33.55.236/radioooe
<ASF network reader> : server:212.33.55.236:80 filename:/radioooe
<ASF network reader> : read hdrbl 2841  skip: 1518
<ASF network reader> :

        If you wish to store the stream into a local file
        you may try to use this before starting aviplay:
                export WRITE_ASF=1
        this will create /tmp/asfXXXXX with received data

<ASF reader> :  Title       : Radio Oberösterreich
<ASF reader> :  Author      : Radio Oberösterreich
<ASF reader> :  Copyright   : ORF Oberösterreich
<ASF reader> :  Description : Voll dabei auf 95,2
<ASF reader> : VersionInfo: WMFSDKVersion
<ASF reader> : VersionInfo: 9.00.00.2980
<ASF reader> : Codec Type: Audio
<ASF reader> : Codec Name: Windows Media Audio 9
<ASF reader> : Codec Description:  32 kbps, 44 kHz, mono 1-pass CBR
<ASF reader> : Stream-MaxBitrate: 1-32645
<ASF reader> : MainHeader: E117A81A-CD12-426F-A37A-0A1F41A90063
Created: Mon Mar  7 16:35:16 2005   File size=2841   Packets=4294967295
Total time=0.0 sec   Play time=0.0 sec   Preroll=1.6 sec
Flags=0x9  Packet size=1518  (=1518)  MaxBandwidth=32645 bps
<ASF reader> : header contains "header extension" (1963b)
<ASF reader> : StreamHeader: audio media   Error correction: audio spread
Time offset=0  Stream size=28  Error size=8  Stream=1  Reserved=0x6cce6200
<ASF network reader> : received valid headers
<ASF reader> : Interleave info: blocksize=1  packetlen=1487  chunklen=1487
<reader> : Initialized audio stream (chunk tblsz: 2147483647, fmtsz: 28)
<aviplay> : Videostream not detected
<codec keeper> : Found 5 plugins (/usr/lib/avifile-0.7,A:23,V:27)
<codec keeper> : FF WMA v2 audio decoder created
<ASF network reader> : read hdrbl 2841  skip: 1518
<ASF network reader> : received valid headers
<ASF network reader> : setting timeshift 646659.821s
<aviplay> : Will try audio renderers in this order: OSS,SDL,noaudio
<audio renderer> : src fmt=0x161 1ch 44100Hz 16b   4003B/s balign=1487 cbsz=10
<audio renderer> : dst fmt=0x01 1ch 44100Hz 16b  88200B/s balign=2 cbsz=0
<OSS audio renderer> : WARNING: ioctl(stereo) (1 != 0)
<aviplay> : Will try audio renderers in this order: SDL,noaudio
<audio renderer> : src fmt=0x161 1ch 44100Hz 16b   4003B/s balign=1487 cbsz=10
<audio renderer> : dst fmt=0x01 1ch 44100Hz 16b  88200B/s balign=2 cbsz=0
<SDL audio renderer> : buffer size: 8192  44100Hz
SDL: Audio timeout - buggy audio driver? (disabled)
audio: Bad file descriptor
<aviplay> : Closing clip
<ASF network reader> : read_content() successful


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