[Qemu-devel] Re: [PATCH 2/5] vnc: JPEG should be disabled if the client don't set tight quality

[Anthony Liguori <aliguori@linux.vnet.ibm.com>]

On 06/04/2010 08:16 AM, Alexander Graf wrote:
> On 04.06.2010, at 15:18, Corentin Chary wrote:
>
>    
>> Disable JPEG compression by default and only enable it if the
>> VNC client has sent the requested quality.
>>
>> Signed-off-by: Corentin Chary<corentincj@iksaif.net>
>> ---
>> vnc.c |    2 +-
>> 1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/vnc.c b/vnc.c
>> index ed0e096..9cf38d1 100644
>> --- a/vnc.c
>> +++ b/vnc.c
>> @@ -1644,7 +1644,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
>>      vs->features = 0;
>>      vs->vnc_encoding = 0;
>>      vs->tight_compression = 9;
>> -    vs->tight_quality = 9;
>> +    vs->tight_quality = -1; /* Lossless by default */
>>      
> So what's the threshold? When do you start to be lossy?
>    

When the client explicitly requests it.

Regards,

Anthony Liguori

> Alex
>
>