i'm not sure but it seems lz4 won't be enabled unless adding a new value of the image_compress parameter in QEMU.
so i just replace lz with lz4, at red_compress_image() in red_worker.c, 6680:
> if (image_compression == SPICE_IMAGE_COMPRESS_LZ4 &&
> red_channel_client_test_remote_cap(&dcc->common.base,
> SPICE_DISPLAY_CAP_LZ4_COMPRESSION)) {
changes to
> if (true && .......
and launch qemu with --spice image-compression=auto_lz.
----------------------------------------
> Date: Wed, 7 Jan 2015 08:15:07 +0100
> From: fantonifabio@xxxxxxxxxx
> To: lgdoor@xxxxxxxxxxx; spice-devel@xxxxxxxxxxxxxxxxxxxxx
> Subject: Re: Patch to support LZ4 compression algorithm
>
> Il 07/01/2015 08:01, LgDoor ha scritto:
>> has anybody tried this feature and encountered the displaying problems?
>>
>> I just made a small change to enable lz4, but the image turns out to be broken (see the screenshots).
>> And I observed that it goes wrong only for the SpiceBitmap w/o SPICE_BITMAP_FLAGS_TOP_DOWN flag in the red_compress_image() function from red_worker.c .
>
> What change you did?
> I tried it only using both server and client compiled with it and FWIK
> should be used automatically if no image compression specified.
>
>>
>> 2014-11-14 0:11 GMT+08:00 Javier Celaya <javier.celaya@xxxxxxxxx>:
>>> Hello
>>>
>>> There they go.
>>>
>>> However, don't forget that, since spice-protocol is a submodule of spice-
>>> common, once you push the commit for spice-protocol, the commit for spice-
>>> common should point to it. The same with spice and spice-gtk in relation to
>>> spice-common.
>>>
>>> Regards
>>>
>>> El Jueves, 13 de noviembre de 2014 16:04:00 Christophe Fergeau escribió:
>>>> Hey,
>>>>
>>>> On Fri, Nov 07, 2014 at 10:17:11AM +0100, Javier Celaya wrote:
>>>>> Hello
>>>>>
>>>>> I resend the patch for the spice repository. I just realized I forgot to
>>>>> remove a debug message from red_worker.c, sorry.
>>>> Thanks for the updated patches, they look good to me. There are 2 blank
>>>> lines at the end of lz4_encoder.[ch] which should be removed.
>>>> Can you resend these patches generated with git-format-patch so that
>>>> they contain a commit log, and an author name/address? Then they can be
>>>> pushed upstream.
>>>>
>>>> Christophe
>>> _______________________________________________
>>> Spice-devel mailing list
>>> Spice-devel@xxxxxxxxxxxxxxxxxxxxx
>>> http://lists.freedesktop.org/mailman/listinfo/spice-devel
>>>
>>>
>
>
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