Commit Graph

6 Commits

Author SHA1 Message Date
Francois Gouget
2db59fef3a streaming: Let the video encoder manage the compressed buffer
This way the video encoder is not forced to use malloc()/free().
This also allows more flexibility in how the video encoder manages the
buffer which allows for a zero-copy implementation in both video
encoders.

Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
2016-06-14 17:04:40 +02:00
Francois Gouget
497fcbb0a3 streaming: Let the administrator pick the video encoder and codec
The Spice server administrator can specify the encoder and codec
preferences to optimize for CPU or bandwidth usage. Preferences are
described in a semi-colon separated list of encoder:codec pairs.
The server has a default preference list which can explicitly be
selected by specifying 'auto'.

Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
2016-06-14 17:04:40 +02:00
Francois Gouget
a697bd971b streaming: Add a GStreamer 1.0 MJPEG video encoder and use it by default
This introduces a pared down GStreamer-based video encoder to serve as
the basis for later enhancements.
In this form the new encoder supports both regular and sized streams
but lacks any rate control. It should still work fine if bandwidth is
sufficient such as on LANs.

Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
2016-06-14 17:04:40 +02:00
Francois Gouget
1b69198c4e streaming: Remove the width/height encode_frame() parameters
encode_frame() needs the QXL_DRAW_COPY operation's SpiceCopy.src_area
field anyway, so the width and height parameters were redundant.

Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
2016-06-14 17:04:40 +02:00
Frediano Ziglio
f36c3887ba Make sure all headers are independent
Make sure is possible to include any headers alone.

I used this script to check independence (run under server directory):
----
#!/bin/bash

set -e

# check not already modified
if grep -q libheaders.la Makefile.am; then
    echo "Header library already prepared" >&2
    exit 1
fi

add_lib() {
    local hdr="$1"

    hdr=${hdr%.h}
    c="mao_${hdr}.c"
    echo "#include \"${hdr}.h\"" > $c
    echo -e "\t$c \\" >&3
}

# add library to compile all headers alones
exec 3>> Makefile.am
echo "
noinst_LTLIBRARIES += libheaders.la
libheaders_la_SOURCES =				\\" >&3
for hdr in *.h; do
    case $hdr in
    spice-bitmap-utils.h)
        add_lib $hdr
        ;;
    spice*.h)
        ;;
    *)
        add_lib $hdr
        ;;
    esac
done
echo -e "\t\$(NULL)" >&3
exec 3>&-
----

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Jonathon Jongsma <jjongsma@redhat.com>
2016-05-18 00:24:37 +01:00
Francois Gouget
0e10629d70 server: Enable adding alternative MJPEG video encoders
This replaces the original mjpeg_encoder API with a VideoEncoder base
class which can be reimplemented by other encoders.
This also renames the members and enums from mjpeg_* to video_*.

Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>
2016-05-04 10:51:55 +01:00