/usr/share/xcrysden/Tcl/movieEncoders.tcl is in xcrysden-data 1.5.53-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Author: #
# ------ #
# Anton Kokalj Email: Tone.Kokalj@ijs.si #
# Department of Physical and Organic Chemistry Phone: x 386 1 477 3523 #
# Jozef Stefan Institute Fax: x 386 1 477 3811 #
# Jamova 39, SI-1000 Ljubljana #
# SLOVENIA #
# #
# Source: $XCRYSDEN_TOPDIR/Tcl/__file__
# ------ #
# Copyright (c) 2008 by Anton Kokalj #
#############################################################################
proc determine_movie_encoders {} {
global xcMisc
set gif_encoder_priority_list {convert gifsicle whirlgif}
set movie_encoder_priority_list {mencoder ppmtompeg}
if { [info exists xcMisc(gif_encoder)] } {
set gif_encoder_priority_list [linsert $gif_encoder_priority_list 0 [file tail $xcMisc(gif_encoder)]]
}
if { [info exists xcMisc(movie_encoder)] } {
set movie_encoder_priority_list [linsert $movie_encoder_priority_list 0 [file tail $xcMisc(movie_encoder)]]
}
foreach enc $gif_encoder_priority_list {
if { [info exists xcMisc($enc)] } {
set xcMisc(gif_encoder) $enc
break
}
}
foreach enc $movie_encoder_priority_list {
if { [info exists xcMisc($enc)] } {
set xcMisc(movie_encoder) $enc
break
}
}
}
# ------------------------------------------------------------------------
#
# AVI/MPEG movies
#
# ------------------------------------------------------------------------
proc encode_movie {filelist outfile} {
global gifAnim xcMisc system
if { $gifAnim(temp_files_dir) == "pwd" } {
set dir $system(PWD)
cd $system(PWD)
} else {
set dir $system(SCRDIR)
cd $system(SCRDIR)
}
set cmdLine [cmdLine_$xcMisc(movie_encoder) $filelist $outfile $dir]
set cw [DisplayUpdateWidget "Encoding" "Encoding the movie"]
eval xcCatchExecReturnRedirectStdErr $cmdLine
destroy $cw
}
proc cmdLine_ppmtompeg {filelist outfile input_dir} {
global xcMisc
return "$xcMisc(ppmtompeg) [mpegCreateParamFile $outfile $input_dir [join $filelist\n]]"
}
proc cmdLine_mencoder {filelist outfile input_dir} {
global gifAnim xcMisc
if { [regexp {\.ppm[ \n\r,]|\.ppm$} $filelist] } {
# we need to convert all *.PPM files to *.PNG files
set cw [DisplayUpdateWidget "Converting" "Converting frame files to PNG format"]
foreach image $gifAnim(filelist) {
set newfile [file rootname $image].png
scripting::_printToFile_imageConvert $image $newfile
}
set tmplist $filelist
regsub -all -- {\.ppm} $tmplist .png filelist
destroy $cw
}
set delay [expr {$gifAnim(delay) <= 0.0 ? 1 : $gifAnim(delay)}]
set fps [expr 100.0 / $delay]
set cmdLine "$xcMisc(mencoder) mf://[join $filelist ,]"
if { [string toupper [file extension $outfile]] == ".AVI" } {
# create AVI file
append cmdLine " -mf fps=$fps -o $outfile -ovc lavc -lavcopts vcodec=mpeg4"
} else {
# create MPEG file
append cmdLine " -of mpeg -mf fps=$fps -o $outfile -ovc lavc -lavcopts vcodec=mpeg2video"
}
if { $gifAnim(edit_param) } {
set cmdLine [gifAnim:editParam $cmdLine]
}
return $cmdLine
}
# ------------------------------------------------------------------------
#
# Animated GIF
#
# ------------------------------------------------------------------------
proc encode_gif {filelist outfile} {
global gifAnim xcMisc mesa_bg system
# determine the background color
if { $gifAnim(gif_transp) } {
if { ! [info exists mesa_bg(current)] } {
set mesa_bg(current) \#000000
}
if { [string index $mesa_bg(current) 0] == "#" } {
set bg_color $mesa_bg(current)
} else {
set bg_color [rgb_f2h $mesa_bg(current)]
}
set gifAnim(bg_color) $bg_color
}
# construct the execution command-line for encoding
set cmdLine [cmdLine_$xcMisc(gif_encoder) $filelist $outfile]
# encode ...
if { $gifAnim(temp_files_dir) == "pwd" } {
cd $system(PWD)
} else {
cd $system(SCRDIR)
}
if { $gifAnim(edit_param) } {
set cmdLine [gifAnim:editParam $cmdLine]
}
puts stderr "cmdLine=$cmdLine"
flush stderr
set cw [DisplayUpdateWidget "Encoding" "Encoding the Animated-GIF movie"]
if { $xcMisc(gif_encoder) != "gifsicle" } {
eval xcCatchExecReturnRedirectStdErr $cmdLine
} else {
eval exec_gifsicle $cmdLine
}
destroy $cw
}
proc cmdLine_convert {filelist outfile} {
global gifAnim xcMisc
if { $gifAnim(gif_transp) } {
append comlin " -dispose Previous"
}
append comlin " $filelist -set delay $gifAnim(delay) -loop $gifAnim(loop)"
if { $gifAnim(gif_global_colormap) && !$gifAnim(gif_transp) } {
append comlin " +map"
}
if { $gifAnim(gif_transp) } {
append comlin " -transparent $gifAnim(bg_color)"
}
if { $gifAnim(gif_minimize) } {
append comlin " -layers optimize"
}
return [format "%s %s %s" $xcMisc(convert) $comlin $outfile]
}
proc cmdLine_gifsicle {filelist outfile} {
global gifAnim xcMisc
set flags "--no-warnings --delay $gifAnim(delay) --loopcount=$gifAnim(loop)"
if { $gifAnim(gif_transp) } {
append flags " --disposal background --transparent=$gifAnim(bg_color)"
}
if { $gifAnim(gif_minimize) } {
append flags " -O2"
}
if { $gifAnim(gif_global_colormap) } {
# ignored
}
return [format "%s %s %s > %s" $xcMisc(gifsicle) $flags $filelist $outfile]
}
proc cmdLine_whirlgif {filelist outfile} {
global gifAnim xcMisc
set flags " -time $gifAnim(delay) -loop $gifAnim(loop)"
if { $gifAnim(gif_minimize) } {
append flags " -minimize"
}
if { $gifAnim(gif_global_colormap) } {
append flags " -globalmap"
}
if { $gifAnim(gif_transp) } {
append flags " -disp prev -trans $gifAnim(bg_color)"
}
return [format "%s %s %s %s %s" $xcMisc(whirlgif) $flags -o $outfile $filelist]
}
proc exec_gifsicle {args} {
xcDebug -stderr "Executing: $args"
if { [catch {eval exec $args 2> gifsicle.stderr} errMsg] } {
# gifsicle returns wrong status of 1 when -transparent option
# is used
set msg [ReadFile gifsicle.stderr]
if { [string match {*Usage: gifsicle*} $msg] } {
ErrorDialogInfo "while executing\nexec $args" $msg\n$errMsg
uplevel 1 {
return 1
}
}
}
return 0
}
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