Re: 96kHz 24bit WAV playback

Greg Wright wrote:
> John Stirling wrote:
>> Still stuck on this. Any help would be much appreciated.
>
> So, are you trying to find out why it stops, or do you know?
I'm trying to find out.

> In what way does the audio stop, does the device run dry, does
> it rebuffer or what?
>
> I don't see any logs from between the renderer and the physical
> hardware, do you have data making it that far, to Write()?
At the start of the log there is -
audlinux_oss.cpp:_WriteBytes l=19200 real=19200 rep=19200 t=1363200

which is the last call to _WriteBytes I see

After that the renderer receives several  more packets and writes those 
to audio service but eventually wvffplin stops receiving GetPacket() 
requests. I can't see why these are stopping.

I'll send you a more detailed log direct.

>
> --greg.
>
>
>>
>>
>> John Stirling wrote:
>>> Back on 24/96 again...
>>>
>>> With the audio device refusing to open in 24 bit mode, we've got it 
>>> as far as thinking it's playing (GetPacket/OnPacket activity for 
>>> correct length of time, but no audio output)
>>> Device opens as follows:
>>> Device Configured:
>>>         Sample Rate: 96000
>>>        Sample Width: 8 [faked=AFMT_U8 actual=AFMT_U8]
>>>        Num channels: 2
>>>          Block size: 19200
>>>  Device buffer size: 32768
>>>
>>> When we then enable the audio device to accept 24 bits per sample it 
>>> does the same thing, but something goes wrong after about 5 seconds 
>>> (stop seeing any GetPacket/OnPacket debug)
>>> Device opens as follows:
>>> Device Configured:
>>>         Sample Rate: 96000
>>>        Sample Width: 24 [faked=AFMT_S24_LE actual=AFMT_S16_LE]
>>>        Num channels: 2
>>>          Block size: 19200
>>>  Device buffer size: 65536
>>>
>>> In the trace below it looks to me that everything is working as 
>>> expected up until the point it stops. Can anyone give me some 
>>> pointers - what might be going wrong, where to add debug etc.
>>>
>>> audrend.cpp:OnPacket to=0 t=5620 s=11520
>>> audlinux_oss.cpp:_WriteBytes l=19200 real=19200 rep=19200 t=1363200
>>> audrend.cpp:DoAudio IN
>>> audrend.cpp:WriteToAudioServices s=11520
>>> audrend.cpp:WriteToAudioServices OK t=5620
>>> audrend.cpp:WriteToAudioServices s=11520
>>> audrend.cpp:WriteToAudioServices OK t=5640
>>> audrend.cpp:DoAudio OUT
>>> wvffplin.cpp:GetPacket
>>> wvffplin.cpp:RIFFReadDone s=11520 st=5 283
>>> audrend.cpp:OnPacket to=0 t=5640 s=11520
>>> audrend.cpp:DoAudio IN
>>> audrend.cpp:WriteToAudioServices s=11520
>>> audrend.cpp:WriteToAudioServices OK t=5660
>>> audrend.cpp:DoAudio OUT
>>> wvffplin.cpp:GetPacket
>>> wvffplin.cpp:RIFFReadDone s=11520 st=5 284
>>> wvffplin.cpp:GetPacket
>>> wvffplin.cpp:RIFFReadDone s=11520 st=5 285
>>> audrend.cpp:OnPacket to=0 t=5660 s=11520
>>> audrend.cpp:OnPacket to=0 t=5680 s=11520
>>> audrend.cpp:DoAudio IN
>>> audrend.cpp:WriteToAudioServices s=11520
>>> audrend.cpp:WriteToAudioServices OK t=5680
>>> audrend.cpp:WriteToAudioServices s=11520
>>> audrend.cpp:WriteToAudioServices OK t=5700
>>> audrend.cpp:DoAudio OUT
>>> audlinux_oss.cpp:_WriteBytes l=19200 real=19200 rep=19200 t=1382400
>>> audrend.cpp:DoAudio IN
>>> audrend.cpp:DoAudio OUT
>>> wvffplin.cpp:GetPacket
>>> wvffplin.cpp:RIFFReadDone s=11520 st=5 286
>>> audrend.cpp:OnPacket to=0 t=5700 s=11520
>>> audrend.cpp:DoAudio IN
>>> audrend.cpp:WriteToAudioServices s=11520
>>> audrend.cpp:WriteToAudioServices OK t=5720
>>> audrend.cpp:DoAudio OUT
>>> audrend.cpp:DoAudio IN
>>> audrend.cpp:DoAudio OUT
>