[Spice-devel] jpeg and jpeg_alpha in spice

[Alon Levy]

On Tue, May 03, 2011 at 11:48:59AM +0800, Shuxiang Lim wrote:
> Hi,All!

Hi Shuxiang,

 AFAIK you can't avoid non jpeg images because most (all?) rendering operations still happen
 on the client, so it can't or/xor/move with mask an 'almost' bitmap.

 But the person who wrote this code should be back on the list next week, so if you can
 wait until then you should get a better answer.

Alon

>    I've found a problem that when
> 1. using qxl,thus the image type will be SPICE_BITMAP_FMT_RGBA;
> 2. and forcing the use of red_jpeg_compress_image ('cause I want to get only
> JPEG in client) in spice server
>    then SPICE_IMAGE_TYPE_JPEG_ALPHA will be produced,but this will cause the
> color disorder in the dest image in client.
>    Normally,spice will use quic_compress or lz_compress for
> SPICE_BITMAP_FMT_RGBA, so SPICE_IMAGE_TYPE_JPEG_ALPHA will never be used, Am
> I right? So why did we define SPICE_IMAGE_TYPE_JPEG_ALPHA? How can I produce
> only NORMAL SPICE_IMAGE_TYPE_JPEG for SPICE_BITMAP_FMT_RGBA?
>   Best Regards.

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