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Date: Sat, 14 Jul 2012 06:37:06 +0100
From: agraham <agraham@g-b.net>
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Subject: Re: [Qemu-devel] QEMU VNC Audio - All audio data null
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To: agraham@g-b.net
Cc: qemu-devel@nongnu.org

On 07/14/2012 03:17 AM, agraham wrote:
> Hi Guys,
>
> I've written a VNC client that implements the VNC QEMU Audio extensions.
> Using QEMU 0.13 it works very very for remote sound, however after
> upgrading to QEMU 1.1.0 the audio stream contains only bytes of zeros,
> so this results in no sound on the client.
>
> It is almost like the stream is muted by sending 0 bytes instead of the
> actual data.
>
> 0: VNC: :SOUND: AudioOn
> 1: VNC: :SOUND: Received _QEMU_Audio_Server_Message: Operation: 1
> 2: VNC: :SOUND: Received _QEMU_Audio_Start
> 3: VNC: :SOUND: Received _QEMU_Audio_Server_Message: Operation: 2
> 4: VNC: :SOUND: Received _QEMU_Audio_Data 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
>
> Is there something new that needs to be done in order for the sound to
> be pushed out, like some unmute mechanism?
>
> I rebuilt QEMU 0.15.1 and sound worked but was very choppy, I think due
> to some timer injection changes - but that's another issue.
>
> Thanks in advance.
>
> Albert

I've just rebuilt QEMU 1.0 (and all of its dependencies) and it has the 
same problem (zero bytes), so some incompatibility was introduced 
between 0.15.1 and 1.1.0.

Anyone got any clues ?

Thanks.

Albert