#!/usr/bin/perl

#######################################################################
# LiVES frame_calculator plugin, version 2
# Compiled with Builder version 3.2.0
# autogenerated from script by Salsaman

# rendered plugins should accept:
# <plugin_name> version (return <plugin_name> version <version>)
# <plugin_name> get_define
# <plugin_name> get_capabilities
# <plugin_name> get_description (e.g. "Edge detect|Edge detecting|1|1|")
# <plugin_name> clear (clean up any plugin generated temp files)
# and optionally any of: 
# <plugin_name> get_parameters
# <plugin_name> get_param_window
# <plugin_name> get_onchange
# <plugin_name> onchange_<when> (for any triggers, e.g. onchange_init)
#
# they must accept:
# <plugin_name> process <parameters>

# You should not skip any frames, if a frame is not changed you must do:
# `cp $in $out`
#
# for *non-Perl* plugins, LiVES will call:
# <plugin_name> process [<in2_prefix> [<in_prefix>]] <out_prefix> <out_ext> <start> <end>
#  <width> <height> <img_ext> <fps> [<img2_ext> <start2> <handle2>]  <parameters>
# you should create all output frames $out_prefix%08d$out_ext in numerical 
# from start to end inclusive,
# using $in_prefix%08d$in_ext and $in2_prefix%08d$img2_ext as applicable.
# in / out images are in current dir, In2 images can be located in ../handle2 and numbered from 
# Each time calling sig_progress (see smogrify) - writes current frame number to 
# <dir>/.status
# and checking for pause (test for a file of that name in current dir - if present just sleep until deleted)
#
# Any errors - 
# write "error|msg1|msg2|msg3|" to .status
# msgn must not contain "\n", but can be omitted

# after processing, you should leave no gaps in out frames, you should not resize
# or change the palette from RGB24 (LiVES will check and autocorrect this soon)

# Also you must implement your own: &sig_error and &sig_progress


#######################################################################

use POSIX;
setlocale(LC_NUMERIC, "C");

my $command = $ARGV[0];

if ($command eq "get_capabilities") {
    # capabilities is a bitmap field
    # 0x0001 == slow (hint to GUI)
    # 0x0002 == may resize (all frames to  x )
    # 0x0004 == block mode generator
    # 0x8000 == reserved
    print "32768\n";
    exit 0;
}

if ($command eq "version") {
    print "frame_calculator version 2 : builder version 3.2.0\n";
    exit 0;
}

if ($command eq "get_define") {
    print "|1.7\n";
    exit 0;
}

if ($command eq "get_description") {
    #format here is "Menu entry|Action description|min_frames|number_of_in_channels|"
    # min_frames == -1 indicates a special "no processing" effect. This allows more
    #general parameter windows which are not really effects (e.g. frame_calculator)
    print "Frame Calculator|fc|-1|0|\n";
    exit 0;
}


if ($command eq "get_parameters") {
    # "name|label|type|other fields..."
    # eg. print "radius|_radius|num0|1|1|100|";
    # types can be numx, colRGB24, bool, string or string_list
    print "calc0|_Calculate|bool|0|1|\n";
    print "calc1|_Calculate|bool|0|1|\n";
    print "calc2|_Calculate|bool|1|1|\n";
    print "frames|_Frames|num0|0|0|1000000|\n";
    print "fps|Frames _per second (FPS)|num3|25.|1.|200.|\n";
    print "time|_Time (seconds)|num2|0|0|3600.|\n";
    exit 0;
}

if ($command eq "get_param_window") {
    print "layout|p0|fill|p3||\n";
    print "layout|p1|fill|p4||\n";
    print "layout|p2|fill|p5||\n";
    exit 0;
}

if ($command eq "get_onchange") {
    print "0|\n";
    print "1|\n";
    print "2|\n";
    print "3|\n";
    print "4|\n";
    print "5|\n";
    exit 0;
}

#######################################################

if ($command eq "process") {
    # in case of error, you should do:
    # &sig_error("msg1", "msg2", "msg3", "msg4"); [ msg's are optional, but must not
    # contain newlines (\n) ]


###### handle parameters #############
# autogenerated from get_parameters

    unless (defined($ARGV[1])) {
      $p0 = 0;
    }
    else {
      $p0 = $ARGV[1];
    }
    unless (defined($ARGV[2])) {
      $p1 = 0;
    }
    else {
      $p1 = $ARGV[2];
    }
    unless (defined($ARGV[3])) {
      $p2 = 1;
    }
    else {
      $p2 = $ARGV[3];
    }
    unless (defined($ARGV[4])) {
      $p3 = 0;
    }
    else {
      $p3 = $ARGV[4];
    }
    unless (defined($ARGV[5])) {
      $p4 = 25.;
    }
    else {
      $p4 = $ARGV[5];
    }
    unless (defined($ARGV[6])) {
      $p5 = 0;
    }
    else {
      $p5 = $ARGV[6];
    }
    $p0 = ~(~$p0);
    $p1 = ~(~$p1);
    $p2 = ~(~$p2);
    $! = 0;
    if ($p3 >= 0) {
        $p3 = int(POSIX::strtod($p3) * 1 + .5) / 1;
    } else {
        $p3 = int(POSIX::strtod($p3) * 1 - .5) / 1;
    }
    if ($p3 < 0) {
       &sig_error("frames must be >= 0");
       exit 1;
    }
    if ($p3 > 1000000) {
       &sig_error("frames must be <= 1000000");
       exit 1;
    }
    $! = 0;
    if ($p4 >= 0) {
        $p4 = int(POSIX::strtod($p4) * 1000. + .5) / 1000.;
    } else {
        $p4 = int(POSIX::strtod($p4) * 1000. - .5) / 1000.;
    }
    if ($p4 < 1.) {
       &sig_error("fps must be >= 1.");
       exit 1;
    }
    if ($p4 > 200.) {
       &sig_error("fps must be <= 200.");
       exit 1;
    }
    $! = 0;
    if ($p5 >= 0) {
        $p5 = int(POSIX::strtod($p5) * 100. + .5) / 100.;
    } else {
        $p5 = int(POSIX::strtod($p5) * 100. - .5) / 100.;
    }
    if ($p5 < 0) {
       &sig_error("time must be >= 0");
       exit 1;
    }
    if ($p5 > 3600.) {
       &sig_error("time must be <= 3600.");
       exit 1;
    }
    if ($img_ext eq ".png") {
        $img_prefix = "PNG32:";
    } else {
        $img_prefix = "";
    }

    if ($out_ext eq ".png") {
        $out_prefix = "PNG32:";
    } else {
        $out_prefix="";
    }


    if ($start == 0) {$start = 1;}


################# loop through frames #################
    for ($frame = $start; $frame <= $end; $frame++) {
        # sig progress will update the progress bar from $start->$end
        $name = &mkname($frame);
        $out = "$name$out_ext";

##################### the all-important bit #######################


###################################################################
        for (my $i = 0; $i < 5; $i++) {
            if (! -s $out) {
                sleep 1;
            }
        }

        if (! -s $out) {
            print STDERR "Warning: effect plugin frame_calculator skipped frame $frame !\n";
            return 1;
        }

        &sig_progress($frame,  $width,  $height,  $fps,  $end);

        }
    return 1;
}



########## Post loop code ############
if ($command eq "clear") {
    exit 0;
}

########## Triggers ############

if ($command eq "onchange_0") {
    $p0 = @ARGV[1];
    $p1 = @ARGV[2];
    $p2 = @ARGV[3];
    $p3 = @ARGV[4];
    $p3_min = @ARGV[5];
    $p3_max = @ARGV[6];
    $p4 = @ARGV[7];
    $p4_min = @ARGV[8];
    $p4_max = @ARGV[9];
    $p5 = @ARGV[10];
    $p5_min = @ARGV[11];
    $p5_max = @ARGV[12];
    $width = @ARGV[13];
    $height = @ARGV[14];
    $start = @ARGV[15];
    $end = @ARGV[16];
    $last = @ARGV[17];
    $length = $end - $start + 1;

    if ($p0) {$p3=$p4*$p5;} elsif ($p1&&$p5>0.) {$p4=int($p3/$p5*1000.+.5)/1000.;} elsif ($p4>0.) {$p5=int($p3/$p4*100.+.5)/100.;}

    print "$p0 $p1 $p2 $p3 $p3_min $p3_max $p4 $p4_min $p4_max $p5 $p5_min $p5_max ";
    exit 0;
}

if ($command eq "onchange_1") {
    $p0 = @ARGV[1];
    $p1 = @ARGV[2];
    $p2 = @ARGV[3];
    $p3 = @ARGV[4];
    $p3_min = @ARGV[5];
    $p3_max = @ARGV[6];
    $p4 = @ARGV[7];
    $p4_min = @ARGV[8];
    $p4_max = @ARGV[9];
    $p5 = @ARGV[10];
    $p5_min = @ARGV[11];
    $p5_max = @ARGV[12];
    $width = @ARGV[13];
    $height = @ARGV[14];
    $start = @ARGV[15];
    $end = @ARGV[16];
    $last = @ARGV[17];
    $length = $end - $start + 1;

    if ($p0) {$p3=$p4*$p5;} elsif ($p1&&$p5>0.) {$p4=int($p3/$p5*1000.+.5)/1000.;} elsif ($p4>0.) {$p5=int($p3/$p4*100.+.5)/100.;}

    print "$p0 $p1 $p2 $p3 $p3_min $p3_max $p4 $p4_min $p4_max $p5 $p5_min $p5_max ";
    exit 0;
}

if ($command eq "onchange_2") {
    $p0 = @ARGV[1];
    $p1 = @ARGV[2];
    $p2 = @ARGV[3];
    $p3 = @ARGV[4];
    $p3_min = @ARGV[5];
    $p3_max = @ARGV[6];
    $p4 = @ARGV[7];
    $p4_min = @ARGV[8];
    $p4_max = @ARGV[9];
    $p5 = @ARGV[10];
    $p5_min = @ARGV[11];
    $p5_max = @ARGV[12];
    $width = @ARGV[13];
    $height = @ARGV[14];
    $start = @ARGV[15];
    $end = @ARGV[16];
    $last = @ARGV[17];
    $length = $end - $start + 1;

    if ($p0) {$p3=$p4*$p5;} elsif ($p1&&$p5>0.) {$p4=int($p3/$p5*1000.+.5)/1000.;} elsif ($p4>0.) {$p5=int($p3/$p4*100.+.5)/100.;}

    print "$p0 $p1 $p2 $p3 $p3_min $p3_max $p4 $p4_min $p4_max $p5 $p5_min $p5_max ";
    exit 0;
}

if ($command eq "onchange_3") {
    $p0 = @ARGV[1];
    $p1 = @ARGV[2];
    $p2 = @ARGV[3];
    $p3 = @ARGV[4];
    $p3_min = @ARGV[5];
    $p3_max = @ARGV[6];
    $p4 = @ARGV[7];
    $p4_min = @ARGV[8];
    $p4_max = @ARGV[9];
    $p5 = @ARGV[10];
    $p5_min = @ARGV[11];
    $p5_max = @ARGV[12];
    $width = @ARGV[13];
    $height = @ARGV[14];
    $start = @ARGV[15];
    $end = @ARGV[16];
    $last = @ARGV[17];
    $length = $end - $start + 1;

    if ($p1&&$p5>0.) {$p4=int($p3/$p5*1000.+.5)/1000.;} elsif ($p4>0.) {$p5=int($p3/$p4*100.+.5)/100.;}

    print "$p0 $p1 $p2 $p3 $p3_min $p3_max $p4 $p4_min $p4_max $p5 $p5_min $p5_max ";
    exit 0;
}

if ($command eq "onchange_4") {
    $p0 = @ARGV[1];
    $p1 = @ARGV[2];
    $p2 = @ARGV[3];
    $p3 = @ARGV[4];
    $p3_min = @ARGV[5];
    $p3_max = @ARGV[6];
    $p4 = @ARGV[7];
    $p4_min = @ARGV[8];
    $p4_max = @ARGV[9];
    $p5 = @ARGV[10];
    $p5_min = @ARGV[11];
    $p5_max = @ARGV[12];
    $width = @ARGV[13];
    $height = @ARGV[14];
    $start = @ARGV[15];
    $end = @ARGV[16];
    $last = @ARGV[17];
    $length = $end - $start + 1;

    if ($p0) {$p3=$p4*$p5;} elsif ($p4>0.) {$p5=int($p3/$p4*100.+.5)/100.;}

    print "$p0 $p1 $p2 $p3 $p3_min $p3_max $p4 $p4_min $p4_max $p5 $p5_min $p5_max ";
    exit 0;
}

if ($command eq "onchange_5") {
    $p0 = @ARGV[1];
    $p1 = @ARGV[2];
    $p2 = @ARGV[3];
    $p3 = @ARGV[4];
    $p3_min = @ARGV[5];
    $p3_max = @ARGV[6];
    $p4 = @ARGV[7];
    $p4_min = @ARGV[8];
    $p4_max = @ARGV[9];
    $p5 = @ARGV[10];
    $p5_min = @ARGV[11];
    $p5_max = @ARGV[12];
    $width = @ARGV[13];
    $height = @ARGV[14];
    $start = @ARGV[15];
    $end = @ARGV[16];
    $last = @ARGV[17];
    $length = $end - $start + 1;

    if ($p0) {$p3=$p4*$p5;} elsif ($p1&&$p5>0.) {$p4=int($p3/$p5*1000.+.5)/1000.;}

    print "$p0 $p1 $p2 $p3 $p3_min $p3_max $p4 $p4_min $p4_max $p5 $p5_min $p5_max ";
    exit 0;
}
