#!/usr/bin/perl

#######################################################################
# LiVES gen_text plugin, version 3
# 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 "gen_text version 3 : builder version 3.2.0\n";
    exit 0;
}

if ($command eq "get_define") {
    print "|1.8.3\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 "Generate title frames|Generating title frames|0|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 "text|_Text|string|LiVES|1024|\n";
    print "xoffs|_X offset|num0|0|0|10000|\n";
    print "yoffs|_Y offset|num0|0|0|10000|\n";
    print "fcol|_Fill colour|colRGB24|255|255|255|\n";
    print "scol|_Stroke colour|colRGB24|255|255|255|\n";
    print "psize|_Point size|num0|64|10|240|\n";
    print "bgcol|_Background colour|colRGB24|0|0|0|\n";
    print "font|_Font|string||128|\n";
    exit 0;
}

if ($command eq "get_param_window") {
    print "layout|p1|p2||\n";
    print "layout|p0||\n";
    print "layout|p3||\n";
    print "layout|p4||\n";
    print "layout|p6||\n";
    print "layout|p7|p5||\n";
    print "special|fontchooser|7|5||\n";
    exit 0;
}

if ($command eq "get_onchange") {
    print "3|\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) ]

##### check requirements first #######
    if (&location("convert") eq "") {
      &sig_error("You must install 'convert' before you can use this effect.");
      exit 1;
    }

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

    unless (defined($ARGV[1])) {
      $p0 = "LiVES";
    }
    else {
      $p0 = $ARGV[1];
    }
    unless (defined($ARGV[2])) {
      $p1 = 0;
    }
    else {
      $p1 = $ARGV[2];
    }
    unless (defined($ARGV[3])) {
      $p2 = 0;
    }
    else {
      $p2 = $ARGV[3];
    }
    unless (defined($ARGV[4])) {
      $p3 = 255;
    }
    else {
      $p3 = $ARGV[4];
    }
    unless (defined($ARGV[5])) {
      $p4 = 255;
    }
    else {
      $p4 = $ARGV[5];
    }
    unless (defined($ARGV[6])) {
      $p5 = 64;
    }
    else {
      $p5 = $ARGV[6];
    }
    unless (defined($ARGV[7])) {
      $p6 = 0;
    }
    else {
      $p6 = $ARGV[7];
    }
    unless (defined($ARGV[8])) {
      $p7 = "";
    }
    else {
      $p7 = $ARGV[8];
    }
    $! = 0;
    if ($p1 >= 0) {
        $p1 = int(POSIX::strtod($p1) * 1 + .5) / 1;
    } else {
        $p1 = int(POSIX::strtod($p1) * 1 - .5) / 1;
    }
    if ($p1 < 0) {
       &sig_error("xoffs must be >= 0");
       exit 1;
    }
    if ($p1 > 10000) {
       &sig_error("xoffs must be <= 10000");
       exit 1;
    }
    $! = 0;
    if ($p2 >= 0) {
        $p2 = int(POSIX::strtod($p2) * 1 + .5) / 1;
    } else {
        $p2 = int(POSIX::strtod($p2) * 1 - .5) / 1;
    }
    if ($p2 < 0) {
       &sig_error("yoffs must be >= 0");
       exit 1;
    }
    if ($p2 > 10000) {
       &sig_error("yoffs must be <= 10000");
       exit 1;
    }
    $! = 0;
    if ($p5 >= 0) {
        $p5 = int(POSIX::strtod($p5) * 1 + .5) / 1;
    } else {
        $p5 = int(POSIX::strtod($p5) * 1 - .5) / 1;
    }
    if ($p5 < 10) {
       &sig_error("psize must be >= 10");
       exit 1;
    }
    if ($p5 > 240) {
       &sig_error("psize must be <= 240");
       exit 1;
    }
    $p3 = int($p3);
    if ($p3 > 0xFFFFFF || $p3 < 0) {
        &sig_error("Invalid colour for fcol.");
        exit 1;
    }
    $p3_red = int($p3 / 65536);
    $p3 -= $p3_red * 65536;
    $p3_green = int($p3 / 256);
    $p3 -= $p3_green * 256;
    $p3_blue = $p3;
    $p4 = int($p4);
    if ($p4 > 0xFFFFFF || $p4 < 0) {
        &sig_error("Invalid colour for scol.");
        exit 1;
    }
    $p4_red = int($p4 / 65536);
    $p4 -= $p4_red * 65536;
    $p4_green = int($p4 / 256);
    $p4 -= $p4_green * 256;
    $p4_blue = $p4;
    $p6 = int($p6);
    if ($p6 > 0xFFFFFF || $p6 < 0) {
        &sig_error("Invalid colour for bgcol.");
        exit 1;
    }
    $p6_red = int($p6 / 65536);
    $p6 -= $p6_red * 65536;
    $p6_green = int($p6 / 256);
    $p6 -= $p6_green * 256;
    $p6_blue = $p6;
    if ($img_ext eq ".png") {
        $img_prefix = "PNG32:";
    } else {
        $img_prefix = "";
    }

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

    $cstring0 = &RGB24_to_string($p6_red, $p6_green, $p6_blue);
    system("$convert_command -size $width!x$height! xc:$cstring0 $out_prefix" . "temp$out_ext");
    $cstring1 = &RGB24_to_string($p3_red, $p3_green, $p3_blue);
    $cstring2 = &RGB24_to_string($p4_red, $p4_green, $p4_blue);
    $rdyfile = "";
    ($fam, $stretch, $style, $weight) = &parse_font_string($p7);

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

        if ($rdyfile eq "") {
          system("$convert_command $out_prefix" . "temp$out_ext -fill $cstring1 -stroke $cstring2 -pointsize $p5 -family '$fam' -stretch $stretch -style $style -weight $weight " .
        			 "-draw \"gravity Center text $p1 $p2 '$p0'\" $out_prefix$out");
          $rdyfile = $out;
        }
        else {
         `cp $rdyfile $out`;
         }

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

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

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

        if ($p3_red > 255) {
            $p3_red = 255;
        }
        elsif ($p3_red < 0) {
            $p3_red = 0;
        }
        if ($p3_green > 255) {
            $p3_green = 255;
        }
        elsif ($p3_green < 0) {
            $p3_green = 0;
        }
        if ($p3_blue > 255) {
            $p3_blue = 255;
        }
        elsif ($p3_blue < 0) {
            $p3_blue = 0;
        }
        if ($p4_red > 255) {
            $p4_red = 255;
        }
        elsif ($p4_red < 0) {
            $p4_red = 0;
        }
        if ($p4_green > 255) {
            $p4_green = 255;
        }
        elsif ($p4_green < 0) {
            $p4_green = 0;
        }
        if ($p4_blue > 255) {
            $p4_blue = 255;
        }
        elsif ($p4_blue < 0) {
            $p4_blue = 0;
        }
        if ($p6_red > 255) {
            $p6_red = 255;
        }
        elsif ($p6_red < 0) {
            $p6_red = 0;
        }
        if ($p6_green > 255) {
            $p6_green = 255;
        }
        elsif ($p6_green < 0) {
            $p6_green = 0;
        }
        if ($p6_blue > 255) {
            $p6_blue = 255;
        }
        elsif ($p6_blue < 0) {
            $p6_blue = 0;
        }
        }
    return 1;
}



########## Post loop code ############
if ($command eq "clear") {
    $start = $ARGV[1];
    $end = $ARGV[2];
    $img_ext = $ARGV[3];

    unlink "temp$out_ext";
    exit 0;
}

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

if ($command eq "onchange_3") {
    $p0 = @ARGV[1];
    $p1 = @ARGV[2];
    $p1_min = @ARGV[3];
    $p1_max = @ARGV[4];
    $p2 = @ARGV[5];
    $p2_min = @ARGV[6];
    $p2_max = @ARGV[7];
    $p3_red = @ARGV[8];
    $p3_green = @ARGV[9];
    $p3_blue = @ARGV[10];
    $p4_red = @ARGV[11];
    $p4_green = @ARGV[12];
    $p4_blue = @ARGV[13];
    $p5 = @ARGV[14];
    $p5_min = @ARGV[15];
    $p5_max = @ARGV[16];
    $p6_red = @ARGV[17];
    $p6_green = @ARGV[18];
    $p6_blue = @ARGV[19];
    $p7 = @ARGV[20];
    $width = @ARGV[21];
    $height = @ARGV[22];
    $start = @ARGV[23];
    $end = @ARGV[24];
    $last = @ARGV[25];
    $length = $end - $start + 1;

    $p4_red=$p3_red; $p4_green=$p3_green; $p4_blue=$p3_blue;
    $p0 =~ s/\"/\\\"/g;
    $p7 =~ s/\"/\\\"/g;

    print "\"$p0\" $p1 $p1_min $p1_max $p2 $p2_min $p2_max $p3_red $p3_green $p3_blue $p4_red $p4_green $p4_blue $p5 $p5_min $p5_max $p6_red $p6_green $p6_blue \"$p7\" ";
    exit 0;
}
