[Spice-devel] not clear how to use streaming agent

[Lukáš Hrázký]

Hello Delin,

On Thu, 2018-04-12 at 10:37 +0800, 孙得霖 wrote:
> hi,
>     I use spice for remote view, I want to captures the guest video output, encodes it and send through, so I choose streaming agent, how to build and run it is not clear, can you help me?

Sure, first off, what exactly do you want to achieve? If you just want
to remotely access your VM (see the graphical desktop and interact with
it), you don't need the streaming agent for that, SPICE can do that for
a long time without it.

Streaming agent is designed for a very specific case of capturing and
encoding the desktop from within the guest, which only has an advantage
to the regular old SPICE approach if you have a physical GPU or a vGPU
assigned to the guest to accelerate the process.

If you still think streaming agent is what you need, please describe in
detail what is your use case.

> 1.host environment and Software version:
> centOS(Mini install)
> GVT-g kernel:      https://github.com/intel/gvt-linux/  (branch: topic/dmabuf)
> QEMU:              https://github.com/intel/igvtg-qemu  (branch: qa/dma_buf)
> streming agent:    https://gitlab.com/spice/spice-streaming-agent    
> spice-server       version:0.13.3
> spice-protocol     version:0.12.12
> 
> 
> 2.build info
> kernel:
> make -j 8
> make modules_install && make install
> reboot
> 
> 
> qemu:
> ./configure --prefix=/usr --enable-kvm --disable-xen --enable-debug-info --enable-debug --enable-sdl --enable-vhost-net --enable-spice --disable-debug-tcg --enable-numa --enable-libusb --enable-curl --enable-usb-redir --enable-linux-aio --target-list=x86_64-softmmu --enable-gtk --with-gtkabi=3.0
> make -j 8
> cd roms/seabios
> make -j 8
> cd -
> make install
> cp roms/seabios/out/bios.bin /usr/bin/bios.bin
> 
> 
> spice-protocol:
> ./configure --prefix=/usr
> make -j 8
> make install
> 
> 
> spice-service:
> ./configure  --prefix=/usr --enable-manual=no --disable-silent-rules --disable-smartcard --disable-celt051 --enable-client CFLAGS="-g -O0" CXXFLAGS="-g -O0"
> make -j 8
> make install
> 
> 
> streming agent
> ./autogen.sh
> make -j 8
> make install
> 
> 
> 3.run qemu
> /usr/bin/qemu-system-x86_64 \
> -m 8192 \
> -smp 4,sockets=1,cores=4,threads=1 \
> -M pc \
> -name win71 \
> -hda /Image/vm/win7_base.img \
> -bios /usr/bin/bios.bin -enable-kvm \
> -k en-us \
> -vga none \
> -display egl-headless \
> -spice disable-ticketing,port=6901,streaming-video=off \
> -machine kernel_irqchip=on,usb=on \
> -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 \
> -cpu host -device usb-tablet \
> -device vfio-pci,sysfsdev=/sys/bus/pci/devices/0000:00:02.0/5b8d581a-2dc9-11e8-8238-000906258002,x-display=on,x-igd-opregion=on
> -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel1,id=channel1,name=org.spice-space.stream.0 -chardev spiceport,name=org.spice-space.stream.0,id=charchannel1

Are you running Windows 7 as the guest? The streaming agent is designed
to run in the guest and only supports Linux atm.

Cheers,
Lukas

> questions:
> I am not clear How to use streaming agent and validate it, can you help me?
> 
> thank you!
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