Graphlcd-plugin/touchcol

Description

Author: Community maintained.

This page is about a branch of the GraphLCD plugin with built-in support for skins. The GraphLCD plugin integrates a graphical display into VDR and makes it possible to control VDR even if the television is off.

The branch was started by Andreas 'powarman' Regel but was then abandoned and given to new maintainers by his request.

The functionality of this branch is rather impressive but unfortunately the code is hardly documented.

So this page will be used as a starting point for collecting and formatting its features. Thus this page will be started being a pigsty and improved 'along the way'.

Images

OLED, 256x64, customised skin
GLCD, 240x128, another customised skin	LCD panel, 640x200, connected to USB13700 module

Installation

Hardware requirements

To use this plugin you need a graphical display with supported controller. It's even possible to redirect the output of the plugin to image files or to the framebuffer to drive e.g. TFT monitors.

Supported are the following controllers (or compatibles) and modules:

• Hitachi HD61830
• Samsung KS0108
• Toshiba T6963
• Epson SED1520
• Epson SED1330
• Noritake GU140X32F-7806
• Noritake GU256X64-372

and with the extra library [serdisplib] even a lot more (list of supported displays/modules: [supported displays]).

displays/drivers currently supported (some are broken because of a missing SetPixel()-method)

driver	verified	may work (not verified)	not working (no SetPixel())
avrctl			x
dm140gink		x
framebuffer		x
gu256x64-372		x
g15daemon		x
gu126x64D-K610A4		x
gu140x32f		x
gu256x64-372		x
gu256x64-3900		x
hd61830			x
image		x
ks0108			x 1)
network			x
noritake800		x
sed1330			x 1)
sed1520			x 2)
serdisp	x
simlcd	x
t6963c			x 1)

1) in the meantime serdisplib might be used as substitute.

2) some sed1520-based displays are supported by serdisplib.

Software requirements

• freetype (rendering of TrueType fonts)
• ImageMagick or GraphicsMagick (optional, required for reading image formats other than glcd and pbm)
• serdisplib (optional, see above, not required at compile time)

Installation of graphlcd

graphlcd (skin-branch) consists of two parts:

• graphlcd-base: library with low level drivers, basic functionality, and skin support
• vdr-plugin-graphlcd: VDR plugin.

First of all a current version (contains included skin support) of graphlcd-base needs to be installed:

• Get current version from the GIT repoository:

  git clone git://projects.vdr-developer.org/graphlcd-base.git

• compile and install the library

Then the VDR plugin needs to be retrieved, installed, and compiled:

• Note: $SOURCEDIR/VDR is the source directory of VDR and needs to be adapted accordingly.
• Get current version of the branch from the GIT repository:

  cd $SOURCEDIR/VDR/PLUGINS/src/
  git clone git://projects.vdr-developer.org/vdr-plugin-graphlcd.git -b 0.2.0 vdr-plugin-graphlcd_0.2.0
  ln -s vdr-plugin-graphlcd_0.2.0 graphlcd

• compile plugin, eg:

  cd $SOURCEDIR/VDR/
  make plugins

Everything else is the same as described in plugin installation.

Configuration

After finishing the installation, some files need to be copied.

• copy the configuration file graphlcd.conf to some destination, on most installations this will be /etc.
  can be manually configured by setting parameter --skin (see below):

 cp graphlcd.conf /etc/

• copy the directory with logos, fonts, and skins to $VDRCONFIG/plugins (depending on your installation this will be /etc/vdr/plugins, or /video/plugins, or some other destination):

 cp -r $SOURCEDIR/VDR/PLUGINS/src/graphlcd/graphlcd $VDRCONFIG/plugins/

Parameter

Parameter (short)	Parameter (long)	Description	Default (if parameter not given)
-c CFG	--config=CFG	use CFG as driver config file	/etc/graphlcd.conf
-d DISP	--display=DISP	use display DISP for ouput	first display defined in config file
-s SKIN	--skin=SKIN	use skin SKIN	default
-p SKINPATH		path to skin files	$VDRCONFIG/plugins/graphlcd/skins

Skins

A skin gives a high flexibility of how and which information is brought to a display. Its markup language is the well-known XML.

Structure and elements of a skin

Example skeleton of a skin

<?xml version="1.0"?>
<skin version="1.0" name="testskin">
 
 

 <variable id="LogoWdith" value="40" condition="le({ScreenHeight},64)" />
 <variable id="LogoWdith" value="64" />

 <display id="normal">

   <variable id="TextX" value="4" />

   <text x1="#TextX" ...>
     {PresentTitle}
   </text>

   <image ... />
   <rectangle ... />
   <progress ... />

   <block condition="{Recordings}">
     <image ... />
     <text ...>
       {Recordings}
     </text>
   </block>

   <variable id="Arrow" value="'images/arrow.pbm'"/>
   <text ... >{MenuTitle}</text>
   <list ...>
     <item height="ITEMHEIGHT" />
     <text ... >{MenuCurrent}</text>
     <text ... >{Menuitem}</text>
     <image ... path="#Arrow" condition="{IsMenuCurrent}" />
   </list>

 </display>
</skin>

Info

• skins are always UTF-8, on non UTF-8 systems UTF-8 text will be transcoded on-the-fly.
• All variable and font names must be 7-bit safe (no umlauts or diacritics).
• HTML-entities are not supported, except &lt;,&gt;, &amp;, &#x<hexID>;, and &#<decID>; (e.g.: &#xE001;).

A skin definition contains different types and sections of information:

font

defines an easy to remember font 'handle'. if a condition is given the font item is only defined if the condition is true.
Note:: fonts can only be defined in the context 'skin'.

variable

defines a variable which can be a constant or calculated using a complex evaluation.
Note:: variables can be defined everywhere, but the scope will always be skin-wide!

sections:

skin

root element.

display

a layer containing drawing elements.

block

groups elements together. may be displayed or hidden depending on a condition.

list

a menu with a defined item height, selected text line, line marker, maybe some lines before, and after the .selected line.

drawing elements:

• image
• text
• pixel
• line
• rectangle
• elipse
• slope
• progress (progress bar)
• item (needed in lists)

functions, conditions, evaluations, and tokens:

function

retrieves a value of a certain entity, eg. the height of a font or width of a text string in pixels.

condition

evaluates boolean terms (returns either true or false).

evaluation

evaluates a simple calculation using basic arithmetic operations.

token

contains an information (eg. runtime information from VDR like present title, current channel name, ...) and is either displayed or used in evaluations or conditions.

List of tokens defined in either graphlcd-base or vdr-plugin-graphlcd

• Current channel

{ChannelNumber}

Return: an integer value

The Channel Number

{ChannelName}

Return: an string value, may empty

The Channel Name

{ChannelShortName}

Return: an string value, may empty

The Channel short Name, if present

{ChannelProvider}

Return: an string value, may empty

The Provider Name, if present

{ChannelPortal}

Return: an string value, may empty

The Name of the VDRs channel group the Channel belong to

{ChannelSource}

Return: an string value, may empty

Signal source of the channel, as defined in sources.conf.

{ChannelID}

Return: an valid vdr channel id string, maybe ?

The VDRs channel ID

{ChannelHasTeletext} | {HasTeletext}

Return: boolean

True if Teletext is present

{ChannelHasMultilang} | {HasMultilang}

Return: boolean

True if more than one Audio stream is present

{ChannelHasDolby} | {HasDolby}

Return: boolean

True if Dolby Digital stream is present

{ChannelIsEncrypted} | {IsEncrypted}

Return: boolean

True if the channel is encrypted

{ChannelIsRadio} | {IsRadio}

Return: boolean

True if the channel is an Radio channel

{ChannelAlias}

Return: string, may empty?

The ChannelAlias, this is an virtual channel Name mapped throw the channels.alias mapping file.
Its the preferred way for naming channel logos

• Recording

{IsRecording[,<card number>]}

?

{Recordings[,<card number>]}

?

• Present EPG

{PresentValid}

?

{PresentStartDateTime[:<strftime format>]}

?

{PresentVpsDateTime[:<strftime format>]}

?

{PresentEndDateTime[:<strftime format>]}

?

{PresentDuration[:<duration format>]}

?

{PresentProgress[:<duration format>]}

?

{PresentRemaining[:<duration format>]}

?

{PresentTitle}

?

{PresentShortText}

?

{PresentDescription}

?

• Following EPG

{FollowingValid}

?

{FollowingStartDateTime[:<strftime format>]}

?

{FollowingVpsDateTime[:<strftime format>]}

?

{FollowingEndDateTime[:<strftime format>]}

?

{FollowingDuration[:<duration format>]}

?

{FollowingTitle}

?

{FollowingShortText}

?

{FollowingDescription}

?

• Volume

{VolumeCurrent}

?

{VolumeTotal}

?

{VolumeIsMute} | {IsMute}

?

• Replay

{ReplayTitle}

?

{ReplayPositionIndex[:<duration format>]}

?

{ReplayDurationIndex[:<duration format>]}

?

{ReplayIsPlaying} | {IsPlaying}

?

{ReplayIsFastForward[:<replay speed>]} | {IsFastForward[:<replay speed>]}

?

{ReplayIsFastRewind[:<replay speed>]} | {IsFastRewind[:<replay speed>]}

?

{ReplayIsSlowForward[:<replay speed>]} | {IsSlowForward[:<replay speed>]}

?

{ReplayIsSlowRewind[:<replay speed>]} | {IsSlowRewind[:<replay speed>]}

?

{ReplayIsPausing} | {IsPausing}

?

{ReplayPosition}

?

{ReplayDuration}

?

{ReplayRemaining[:<duration format>]}

?

{ReplayMode}

"cd", "dvd", "file", "image", "music", "vdr"

{ReplayIsShuffle}

Not implemented yet!

{ReplayIsLoop}

Not implemented yet!

• OSD related

{Message}

?

{MenuTitle}

?

{MenuItem}

?

{MenuCurrent}

?

{IsMenuCurrent}

?

{ButtonRed}

?

{ButtonGreen}

?

{ButtonYellow}

?

{ButtonBlue}

?

• Settings

{SettingShowChannelLogo}

?

{SettingShowReplayLogo}

?

{SettingShowSymbols}

?

{SettingShowTimebar}

?

{ScrollMode}

?

{ScrollSpeed}

?

{ScrollTime}

?

{BrightnessActive}

?

{BrightnessIdle}

?

{BrightnessDelay}

?

{DisplayMode}

?
Return "Normal" or "Interactive"

• General info

{IsUTF8}

Return: boolean

true if the VDR runnig under utf-8 encoding

{DateTime[:<strftime format>]}

?

{ConfigPath}

?

{SkinPath}

?

{ScreenWidth}

?

{ScreenHeight}

?

{ForegroundColor}

Return: an valid color string "0x<AA><RR><GG><BB>"

return the foreground color as reportet by the display driver. {DefaultForegroundColor} if the driver do not set this.

black&white skins use this color to set an pixel.

{BackgroundColor}

Return: an valid color string "0x<AA><RR><GG><BB>"

return the background color as reportet by the display driver. {DefaultBackgroundColor} if the driver do not set this.

black&white skins use this color to clear an pixel.

{DefaultForegroundColor}

Return: an valid color string "0x<AA><RR><GG><BB>"

return the graphlcd default foreground color (currently set to white)

{DefaultBackgroundColor}

Return: an valid color string "0x<AA><RR><GG><BB>"

return the graphlcd default background color (currently set to black)

• Set with SVDRP

svdrpsend plug graphlcd set <key> <value, space allowed>

svdrpsend plug graphlcd setexp <exp> <key> <value, space allowed>

svdrpsend plug graphlcd unset <key>

svdrpsend plug graphlcd get <key>

{ExtDataIsAvailable:<key>}

Check if a given variable is set with an SVDRP call

{ExtDataItem:<key>}

Retrieve the contend of the given variable

• Other Plugins Services

{ServiceIsAvailable:<service>}

Return: boolean

Check if a given Service is available

{ServiceItem:<service>,<key>[,<parameter 1>][,<parameter 2>]}

Return: based on <key>

Retrieve a service value

• radio-Plugin Service

{ServiceItem:radio,<key>}

key		Return	Description
default		string	at rds_info = 2: "<start hh>:<start mm> <title> | <artist>" at rds_info = 1: "<radiotext>" at rds_info = 0: empty
title		string	Title
artist		string	Artist
text		string	Radiotext
rds_info	info	integer	0 = No RDS present 1 = Radiotext present 2 = Radiotext, Title and Artist present
rds_pty	pty	integer	Program type http://tech.ebu.ch/docs/techreview/trev_255-beale.pdf (Page 3)

Update interval 100 ms

• lcr-Plugin Service

{ServiceItem:lcr,<key>}

key		Return	Description
default		string	?
destination		string	?
price		string	?
pulse		string	?

Update interval 60 s

• femon-Plugin Service

{ServiceItem:femon,<key>[,<printf format>][,<divisor>]}

key		Return	Description
default	status	string	"Status <"LOCKED"|"-">:<"SIGNAL"|"-">:<"CARRIER"|"-">:<"VITERBI"|"-">:<"SYNC"|"-"> on device #<device number>"
name		string	"<frontend name> on device #<device number>"
snr		integer	?
signal		integer	?
percent_snr		integer	?
percent_signal		integer	?
ber		integer	?
unc		integer	?
video_bitrate	vbr	integer string*)	?
audio_bitrate	abr	integer string*)	?
dolby_bitrate	dbr	integer string*)	?

*) if <printf format> given

Update interval 2 s

<printf format> and <divisor> are only available with key video_bitrate/vbr, audio_bitrate/abr and dolby_bitrate/dbr

Format Strings

• printf Format String

<printf format> is an valid printf format string

• strftime Format String

<strftime format> is an valid strftime format string

• duration Format String

specifier	Replaced by
%H	?
%k	?
%M	?
%m	?
%S	?
%f	?

Problems

Links

[1]	http://projects.vdr-developer.org/projects/show/graphlcd	new plugin homepage
[2]	http://projects.vdr-developer.org/wiki/graphlcd/GraphlcdSkin	page for skin branch