mirror of https://github.com/asterisk/asterisk
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
160 lines
6.6 KiB
160 lines
6.6 KiB
--- VIDEO CONSOLE SUPPORT IN ASTERISK ---
|
|
|
|
Some console drivers (at the moment chan_oss.so) can be built with
|
|
support for sending and receiving video. In order to have this
|
|
working you need to perform the following steps:
|
|
|
|
+++ Enable building the video_console support +++
|
|
|
|
The simplest way to do it is add this one line to channels/Makefile:
|
|
|
|
chan_oss.so: _ASTCFLAGS+=-DHAVE_VIDEO_CONSOLE
|
|
|
|
+++ Install prerequisite packages +++
|
|
|
|
The video_console support relies on the presence of SDL, SDL_image
|
|
and ffmpeg libraries, and of course on the availability of X11
|
|
|
|
On Linux, these are supplied by
|
|
|
|
libncurses-dev,
|
|
libsdl1.2-dev, libsdl-image1.2-dev
|
|
libavcodec-dev, libswcale-dev
|
|
|
|
On FreeBSD, you need the following ports:
|
|
|
|
multimedia/ffmpeg (2007.10.04)
|
|
devel/sdl12 graphics/sdl_image
|
|
|
|
+++ Build and install asterisk with all the above +++
|
|
|
|
Make sure you do a 'make clean' and run configure again after you
|
|
have installed the required packages, to make sure that the required
|
|
pieces are found.
|
|
Check that chan_oss.so is generated and correctly installed.
|
|
|
|
+++ Update configuration files +++
|
|
|
|
Video support requires explicit configuration as described below:
|
|
== oss.conf ==
|
|
You need to set various parameters for video console, the easiest
|
|
way is to uncomment the following line in oss.conf by removing the
|
|
leading ';'
|
|
|
|
;[general](+,my_video,skin2)
|
|
|
|
You also need to manually copy the two files
|
|
|
|
images/kpad2.jpg images/font.png
|
|
|
|
into the places specified in oss.conf, which in the sample are set to
|
|
|
|
keypad = /tmp/kpad2.jpg
|
|
keypad_font = /tmp/font.png
|
|
|
|
other configuration parameters are described in oss.conf.sample
|
|
|
|
== sip.conf ==
|
|
To actually run a call using SIP (the same probably applies to iax.conf)
|
|
you need to enable video support as following
|
|
|
|
[general](+)
|
|
videosupport=yes
|
|
allow=h263 ; this or other video formats
|
|
allow=h263p ; this or other video formats
|
|
|
|
you can add other video formats e.g. h261, h264, mpeg if they are
|
|
supported by your version of libavcodec.
|
|
|
|
|
|
+++ RUN THE PROGRAM +++
|
|
|
|
run asterisk in console mode e.g. asterisk -vdc
|
|
|
|
If video console support has been successfully compiled in, then
|
|
you will see the "console startgui" command available on the CLI`
|
|
interface. Run the command, and you should see a window like this:
|
|
|
|
http://info.iet.unipi.it/~luigi/asterisk_video_console.jpg
|
|
|
|
To exit from this window, in the console run "console stopgui".
|
|
If you want to start a video call, you need to configure your dialplan
|
|
so that you can reach (or be reachable) by a peer who can support video.
|
|
Once done, a video call is the same as an ordinary call:
|
|
"console dial ...", "console answer", "console hangup" all work the same.
|
|
To use the GUI, and also configure video sources, see the next section.
|
|
|
|
+++ VIDEO SOURCES +++
|
|
|
|
Video sources are declared with the "videodevice=..." lines in oss.conf
|
|
where the ... is the name of a device (e.g. /dev/video0 ...) or a
|
|
string starting with X11 which identifies one instance of an X11 grabber.
|
|
You can have up to 9 sources, displayed in thumbnails in the gui, and
|
|
select which one to transmit, possibly using Picture-in-Picture.
|
|
|
|
For webcams, the only control you have is the image size and frame
|
|
rate (which at the moment is the same for all video sources).
|
|
X11 grabbers capture a region of the X11 screen (it can contain
|
|
anything, even a live video) and use it as the source.
|
|
The position of the grab region can be configured using the GUI below
|
|
independently for each video source.
|
|
|
|
The actual video sent to the remote side is the device selected as
|
|
"primary" (with the mouse, see below), possibly with a small
|
|
'Picture-in-Picture' of the "secondary" device (all selectable
|
|
with the mouse).
|
|
|
|
+++ GUI COMMANDS AND VIDEO SOURCES +++
|
|
|
|
(most of the text below is taken from channels/console_gui.c)
|
|
|
|
The GUI is made of 4 areas: remote video on the left, local video
|
|
on the right, keypad with all controls and text windows in the
|
|
center, and source device thumbnails on the top. The top row is
|
|
not displayed if no devices are specified in the config file.
|
|
|
|
________________________________________________________________
|
|
| ______ ______ ______ ______ ______ ______ ______ |
|
|
| | tn.1 | | tn.2 | | tn.3 | | tn.4 | | tn.5 | | tn.6 | | tn.7 | |
|
|
| |______| |______| |______| |______| |______| |______| |______| |
|
|
| ______ ______ ______ ______ ______ ______ ______ |
|
|
| |______| |______| |______| |______| |______| |______| |______| |
|
|
| _________________ __________________ _________________ |
|
|
| | | | | | | |
|
|
| | | | | | | |
|
|
| | | | | | | |
|
|
| | remote video | | | | local video | |
|
|
| | | | | | ______ | |
|
|
| | | | keypad | | | PIP || |
|
|
| | | | | | |______|| |
|
|
| |_________________| | | |_________________| |
|
|
| | | |
|
|
| | | |
|
|
| |__________________| |
|
|
|________________________________________________________________|
|
|
|
|
|
|
The central section is built using an image (jpg, png, maybe gif too)
|
|
for the skin and other GUI elements. Comments embedded in the image
|
|
indicate to what function each area is mapped to.
|
|
Another image (png with transparency) is used for the font.
|
|
|
|
Mouse and keyboard events are detected on the whole surface, and
|
|
handled differently according to their location:
|
|
- center/right click on the local/remote window are used to resize
|
|
the corresponding window;
|
|
- clicks on the thumbnail start/stop sources and select them as
|
|
primary or secondary video sources;
|
|
- drag on the local video window are used to move the captured
|
|
area (in the case of X11 grabber) or the picture-in-picture position;
|
|
- keystrokes on the keypad are mapped to the corresponding key;
|
|
keystrokes are used as keypad functions, or as text input
|
|
if we are in text-input mode.
|
|
- drag on some keypad areas (sliders etc.) are mapped to the
|
|
corresponding functions (mute/unmute audio and video,
|
|
enable/disable Picture-in-Picture, freeze the incoming video,
|
|
dial numbers, pick up or hang up a call, ...)
|
|
|
|
------------------------------------------------------------------------
|
|
--- $Id $---
|