Batch HDR Merging/Toning Script

Question

I've seen a number of different posts on these forums about trying to do this and I never really found a complete and suitable solution. It also has really annoyed me that adobe never implemented this (and it's not possible to do with actions because the action just runs a script and you can't record the HDR toning settings, the dialog always pops up, its in the script). So I finally had some time to get my hands dirty with ExtendScript and I have created a fully featured script complete with UI that allows batch creation of HDR tonned images in photoshop.
The code I got working from various snipets of code I found around the 'net and single stepping through the MergeToHDR.jsx script that is built into photoshop.
This has only been partially tested on photoshop CC on a mac. Hopefully I made it portable enough and it will work on windows and older versions. I don't think the MergeToHDR script has changed much in the last several versions (and that is mainly what I call to do the work) so I think it should work. If you have issues please let me know.
My motivation for this script was coming up with a way to do batch HDR toning for timelapse and so this script's features lean toward using it for that end. I really didn't want to buy another separate program for doing this like photomatix, when I knew it should at least be possible to do in photoshop.
I uploaded the script to github:
https://github.com/davidmilligan/PhotoshopBatchHDR/blob/master/Batch%20HDR.jsx
How to use:
Drop the script in the '[photoshop folder]/presets/scripts' folder and restart photoshop if it is already running.
The script should appear as a menu item under File>Automate>Batch HDR...
A dialog will appear where you specify all the settings for the batch
Input Section:
Click browse and select the source folder that contains the images to be merged/toned
Specify "Number of Brackets" this is how many separate images to group into a single HDR output image (the script will group the images in the source folder in order based on this parameter). You can use a value of 1, which means each image in the source folder is separate and will be toned and output. (I find that many times when shooting RAW, 14 bits is ample to capture the full dynamic of the scene, so I do not waste storage space and shutter acutations using more than one exposure, just make sure to ETTR, also post-processing with this script will be faster)
If there are other files in your source folder (for example .xmp files) that you need to exclude you can specify a filte. For example: *.cr2
Typically for timelapse you are using a tripod and do not need to have photoshop align the images, but I provided that capability for anyone who might need it b/c it was easy to enable. Note that enabling this will make the process MUCH slower.
Toning Section:
These settings are all the same as the photoshop HDR toning dialog for "Local Adaptation"
To preview what your toning settings will look like you can select any file(s) in your sequence by clicking "Select File(s)..." under "Preview". The file(s) you select will open and merge (if more than one file). When that's finished you can click the "Update Preview" button to apply the current toning settings and see what they will look like (I can't do the fast, automatic previews like the builtin dialog, sorry - somebody from adobe want to show me how to do this?)
You can see what the settings will look like at another point in your sequence by clicking the "Select File(s).." button again. (I recommend previewing a shot near the beginning, middle, and end of your sequence)
The dialog prevents you from using anything in photoshop while its open so I provided a zoom to allow you to zoom in on the preview
The tone curve you must enter as a comma separated list of points (sorry, ScriptUI is not really adequate to create the graphical histogram overlay for the curves like in the builtin dialog). The points are grouped into x,y pairs so for example: x1,y1,x2,y2,etc. Typically you will start with 0,0 and end with 255,255 (note that 255 is the max, full white). Like the curves tool, x represents the input and y represents the output
Output Section:
Click browse and select a folder for the script to save the output files to
The rest of this section should be self explanitory. NOTE: If you select to output 32bit files, the toning will not be applied, the files will simply be merged into a 32bit HDR image and saved.
Once you have specified the input and output folders the OK button should be enabled, when you are ready, click OK to start the process
Go watch a movie or take a nap, this is going to take a while. The script will display a progress window showing you how far along the proces is (the photoshop progress windows may occasionally appear on top of it, I usually just move them up a little so I can see both)
Limitations:
Only the local adaptation method is supported. It's really the only one I ever use, and I didn't really feel like implementing the other ones, but feel free to modify the script yourself to add this support
You canot load or save presets from the builtin toning dialog. The format of the preset files is binary and would require reverse engineering of the format and it would be very difficult to read to the files in javascript anyway. If it were xml, it would be much easier, alas it is not. Feel free to grab a hex editor and do this yourself. For now you'll just have to copy all of the values of a preset by hand into the dialog if you want to use a preset. If I have more time this is something I might work on.
Preview is slow because it has to do the actual full toning, I don't know a way to do the fast real time previews like the builtin dialog.
I don't think the "Cancel" button on the progress window really works, once running, the script is too busy to register a click, anybody know how I might fix this?
There may potentially be some ways to improve performance of this script in certain scenarios, IDK, but I'm just glad it works
You're welcome Adobe, you can send me a check at:
[REDACTED]
[REDACTED]
[REDACTED]
Please hit me up with comments/suggestions,
David

Answer 1

Thank you for your script, it's very useful.
I just changed a few things :
The Checkboxes didn't work so I changed them :
alignCheckBox.onChanged by alignCheckBox.onClick
deghostCheckBox.onChanged by deghostCheckBox.onClick
smoothEdgesBox.onChange by smoothEdgesBox.onClick
And for best alignment, I changed :
mergeToHDR.mergeFilesToHDR( currentFileList, false, hdrDeghosting ? kMergeToHDRDeghostBest : kMergeToHDRDeghostOff );
by :
mergeToHDR.mergeFilesToHDR( currentFileList, mergeToHDR.useAlignment, hdrDeghosting ? kMergeToHDRDeghostBest : kMergeToHDRDeghostOff );
And lastly :
My language is french so I had to modify loadPreset function because my own preset file contains the string "P a r   d é f a u t" in place of "D e f a u l t" so that the data is shifted.
Here is the code :
#target photoshop
Batch HDR Script by David Milligan
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
// BEGIN__HARVEST_EXCEPTION_ZSTRING
<javascriptresource>
<name>Batch HDR...</name>
<menu>automate</menu>
</javascriptresource>
// END__HARVEST_EXCEPTION_ZSTRING
//these lines import the 'Merge To HDR.jsx' script that is built in to photoshop, we will make calls to that script and some of the scripts that it includes
var runMergeToHDRFromScript = true;
var g_ScriptFolderPath = app.path + "/"+ localize("$$$/ScriptingSupport/InstalledScripts=Presets/Scripts");
var g_ScriptPath = File( g_ScriptFolderPath+'/Merge To HDR.jsx' );
$.evalFile( g_ScriptPath );
//$.level = 2;
//default settings:
mergeToHDR.useAlignment = false;
mergeToHDR.useACRToning = false;
var numberOfBrackets = 3;
var userCanceled = false;
var sourceFolder;
var outputFolder;
var saveType = "JPEG";
var jpegQuality = 10;
var progress;
var statusText;
var progressWindow;
var fileMask = "*";
var outputFilename = "hdr_output_";
var hdrRadius = 100;
var hdrStrength = 0.5;
var hdrGamma = 1.0;
var hdrExposure = 0.0;
var hdrDetail = 100;
var hdrShadow = 0;
var hdrHighlights = 0;
var hdrVibrance = 20;
var hdrSaturation = 30;
var hdrSmooth = false;
var hdrDeghosting = true;
var hdrCurve = "0,0,255,255";
var estTimeRemaining = "";
var previewDoc;
var originalDoc;
function main()
    promptUser();
    //make sure user didn't cancel
    if(sourceFolder != null && outputFolder != null && sourceFolder.exists && outputFolder.exists && numberOfBrackets > 0)
        initializeProgress();
        var files =  sourceFolder.getFiles(fileMask);
        var currentFileList = new Array();
        for(var index = 0;  index < files.length; index++)
            if((index % numberOfBrackets) == numberOfBrackets - 1)
                var start = new Date();
                progress.value = 100 * index / files.length;
                currentFileList.push(files[index]);
                if(userCanceled) break;
                if(numberOfBrackets > 1)
                    statusText.text = "Merging files "+(index-numberOfBrackets+2)+" - "+(index+1)+" of "+files.length + estTimeRemaining;
                    //for braketed exposures use the mergeToHDR script to merge the files into a single 32 bit image
                    mergeToHDR.outputBitDepth= 32;
                    mergeToHDR.mergeFilesToHDR( currentFileList, mergeToHDR.useAlignment, hdrDeghosting ? kMergeToHDRDeghostBest : kMergeToHDRDeghostOff );
                    statusText.text = "Toning files "+(index-numberOfBrackets+2)+" - "+(index+1)+" of "+files.length+ estTimeRemaining;
                else
                    statusText.text = "Loading file "+(index+1)+" of "+files.length+ estTimeRemaining;
                    //otherwise just open the file
                    doOpenFile(files[index]);
                    statusText.text = "Toning file "+(index+1)+" of "+files.length+ estTimeRemaining;
                progress.value = 100 * (index + numberOfBrackets / 2 ) / files.length;
                if(userCanceled) break;
                if(app.activeDocument != null)
                    //apply the actual tone mapping to the HDR image to get it back down to 8 bits
                    doHDRToning();
                //save the result and close
                //TODO: add leading zeros to index in filename
                if(numberOfBrackets > 1)
                    statusText.text = "Saving result "+(index-numberOfBrackets+2)+" - "+(index+1)+" of "+files.length+ estTimeRemaining;
                else
                    statusText.text = "Saving result "+(index+1)+" of "+files.length+ estTimeRemaining;
                if(userCanceled) break;
                doSaveFile(outputFolder.absoluteURI + "/" + outputFilename + ZeroPad(Math.round((index + 1)/numberOfBrackets), 5) );
                activeDocument.close(SaveOptions.DONOTSAVECHANGES);
                //reset our file list
                currentFileList = new Array();
                //calculate time remaining
                var end = new Date();
                var timeElapsed = end.getTime() - start.getTime();
                var mins = timeElapsed / 60000 * ((files.length - index - 1) / numberOfBrackets);
                estTimeRemaining = " | Remaining: " + ZeroPad((mins / 60).toFixed(0),2) + ":" + ZeroPad((mins % 60).toFixed(0),2);
            else
                currentFileList.push(files[index]);
        progressWindow.hide();
function doOpenFile(filename)
    const eventOpen = app.charIDToTypeID('Opn ');
    var desc = new ActionDescriptor();
    desc.putPath( typeNULL, new File( filename ) );
    desc.putBoolean( kpreferXMPFromACRStr, true ); //not sure what this does or if it is needed
    executeAction( eventOpen, desc, DialogModes.NO );
    //if we don't convert the image to 32bit the mergeToHDR script will not tone our image when we call it, it will simply downconvert it to 8 bit
    convertTo32Bit ();
function convertTo32Bit()
    var idCnvM = charIDToTypeID( "CnvM" );
    var desc6 = new ActionDescriptor();
    var idDpth = charIDToTypeID( "Dpth" );
    desc6.putInteger( idDpth, 32 );
    var idMrge = charIDToTypeID( "Mrge" );
    desc6.putBoolean( idMrge, false );
    var idRstr = charIDToTypeID( "Rstr" );
    desc6.putBoolean( idRstr, false );
    executeAction( idCnvM, desc6, DialogModes.NO );
function doSaveFile(filename)
    if(saveType == "JPEG")
        var jpgSaveOptions = new JPEGSaveOptions();
        jpgSaveOptions.embedColorProfile = true;
        jpgSaveOptions.formatOptions = FormatOptions.STANDARDBASELINE;
        jpgSaveOptions.matte = MatteType.NONE;
        jpgSaveOptions.quality = jpegQuality;
        activeDocument.saveAs(new File(filename), jpgSaveOptions, true /*Save As Copy*/, Extension.LOWERCASE /*Append Extention*/);
    else if(saveType == "TIFF")
        var tifSaveOptions = new TiffSaveOptions();
        tifSaveOptions.embedColorProfile = true;
        activeDocument.saveAs(new File(filename), tifSaveOptions, true /*Save As Copy*/, Extension.LOWERCASE /*Append Extention*/);
    else if(saveType == "TIFF LZW")
        var tifSaveOptions = new TiffSaveOptions();
        tifSaveOptions.embedColorProfile = true;
        tifSaveOptions.imageCompression = TIFFEncoding.TIFFLZW;
        activeDocument.saveAs(new File(filename), tifSaveOptions, true /*Save As Copy*/, Extension.LOWERCASE /*Append Extention*/);
    else if(saveType == "TIFF ZIP")
        var tifSaveOptions = new TiffSaveOptions();
        tifSaveOptions.embedColorProfile = true;
        tifSaveOptions.imageCompression = TIFFEncoding.TIFFZIP;
        activeDocument.saveAs(new File(filename), tifSaveOptions, true /*Save As Copy*/, Extension.LOWERCASE /*Append Extention*/);
    else
        activeDocument.saveAs(new File(filename), undefined, true /*Save As Copy*/, Extension.LOWERCASE /*Append Extention*/);
function doHDRToning()
    //TODO: Reverse engineer the HDR Preset file format and allow user to select a preset file and create the ActionDescriptor from the file
    //create the ActionDescriptor that describes the HDR toning settings to use
    var hdDesc = new ActionDescriptor;
    hdDesc.putInteger( stringIDToTypeID( 'version' ), 6 );//I'm not sure what this does
    hdDesc.putInteger(  kmethodStr, 3 );// the toning method to use, 3 = local adaptation
    hdDesc.putDouble( stringIDToTypeID( 'radius' ), hdrRadius );
    hdDesc.putDouble( stringIDToTypeID( 'threshold' ), hdrStrength );// strength
    hdDesc.putDouble( stringIDToTypeID( 'center' ), hdrGamma );// gamma
    hdDesc.putDouble( stringIDToTypeID( 'brightness' ), hdrExposure );// exposure
    hdDesc.putDouble( stringIDToTypeID( 'detail' ), hdrDetail );
    hdDesc.putDouble( stringIDToTypeID( 'shallow' ), hdrShadow );
    hdDesc.putDouble( stringIDToTypeID( 'highlights' ), hdrHighlights );
    hdDesc.putDouble( stringIDToTypeID( 'vibrance' ), hdrVibrance );
    hdDesc.putDouble( stringIDToTypeID( 'saturation' ), hdrSaturation);
    hdDesc.putBoolean( stringIDToTypeID( 'smooth' ), hdrSmooth );
    hdDesc.putBoolean( stringIDToTypeID( 'deghosting' ), hdrDeghosting );
    //create the tone curve
    var cDesc = new ActionDescriptor;
    cDesc.putString( stringIDToTypeID( 'name' ), 'Default');
    var cList = new ActionList;
    var points = hdrCurve.split(',');
    for(var i = 0; i < points.length; i++)
        if(i % 2 == 1)
            var pDesc = new ActionDescriptor;
            pDesc.putDouble( stringIDToTypeID( 'horizontal' ), points[i-1] );
            pDesc.putDouble( stringIDToTypeID( 'vertical' ), points[i] );
            pDesc.putBoolean( keyContinuity , false );// ?????
            cList.putObject( charIDToTypeID( 'Pnt ' ), pDesc );
    cDesc.putList( stringIDToTypeID( 'curve' ), cList );
    hdDesc.putObject( kclassContour, classShapingCurve, cDesc );
    //call the script that actually invokes the toning plugin
    convertFromHDRNoDialog( outputBitDepth, hdDesc );
function initializeProgress()
    progressWindow = new Window("palette { text:'Batch HDR Progress', \
        statusText: StaticText { text: 'Processing Images...', preferredSize: [350,20] }, \
        progressGroup: Group { \
            progress: Progressbar { minvalue: 0, maxvalue: 100, value: 0, preferredSize: [300,20] }, \
            cancelButton: Button { text: 'Cancel' } \
    statusText = progressWindow.statusText;
    progress = progressWindow.progressGroup.progress;
    progressWindow.progressGroup.cancelButton.onClick = function() { userCanceled = true; }
    progressWindow.show();
function promptUser()
    var setupWindow = new Window("dialog { orientation: 'row', text: 'Batch HDR', alignChildren:'top', \
        leftGroup: Group { orientation: 'column', alignChildren:'fill', \
            inputPanel: Panel { text: 'Input', \
                sourceGroup: Group { \
                    sourceBox: EditText { characters: 40, text: '' }, \
                    sourceBrowse: Button { text: 'Browse' } \
                bracketGroup: Group{ \
                    bracketLabel: StaticText { text: 'Number of Brackets: ' }, \
                    bracketBox: EditText { characters: 2 }, \
                    filterLabel: StaticText { text: 'File Filter: ' }, \
                    filterText: EditText { characters: 5 }, \
                    alignCheckBox: Checkbox { text: 'Align' }\
                    deghostCheckBox: Checkbox { text: 'Deghost' }\
            toningPanel: Panel { text: 'Toning', orientation:'row', alignChildren:'top' } ,\
            outputPanel: Panel { text: 'Output', \
                outputGroup: Group { \
                    outputBox: EditText { characters: 40, text: '' }, \
                    outputBrowse: Button { text: 'Browse' } \
                outputOptionsGroup: Group { \
                    outputFilenameLabel: StaticText { text: 'Filename Format: ' }, \
                    outputFilenameText: EditText { characters: 10 }, \
                    outputFilenamePost: StaticText { text: '00001.jpg' }, \
                saveSettingsGroup: Group { \
                    saveTypeLabel: StaticText { text: 'Save As: ' }, \
                    saveDropDown: DropDownList { }, \
                    jpegQualityLabel: StaticText { text: 'JPEG Quality (1-10): ' }, \
                    jpegQualityText: EditText { characters: 2}, \
                    outputBitDepthLabel: StaticText { text: 'Bit Depth', enabled:false }, \
                    outputBitDepthDropDown: DropDownList { enabled:false }, \
        rightGroup: Group { orientation: 'column', alignChildren:'fill', \
            okButton: Button { text: 'OK', enabled: false } \
            cancelButton: Button { text: 'Cancel' } \
    generateToningPanel(setupWindow.leftGroup.toningPanel);
    //shortcut variables
    var sourceBox = setupWindow.leftGroup.inputPanel.sourceGroup.sourceBox;
    var sourceBrowse = setupWindow.leftGroup.inputPanel.sourceGroup.sourceBrowse;
    var bracketBox = setupWindow.leftGroup.inputPanel.bracketGroup.bracketBox;
    var filterText = setupWindow.leftGroup.inputPanel.bracketGroup.filterText;
    var alignCheckBox = setupWindow.leftGroup.inputPanel.bracketGroup.alignCheckBox;
    var outputBox = setupWindow.leftGroup.outputPanel.outputGroup.outputBox;
    var outputBrowse = setupWindow.leftGroup.outputPanel.outputGroup.outputBrowse;
    var outputFilenameText = setupWindow.leftGroup.outputPanel.outputOptionsGroup.outputFilenameText;
    var saveDropDown = setupWindow.leftGroup.outputPanel.saveSettingsGroup.saveDropDown;
    var jpegQualityText = setupWindow.leftGroup.outputPanel.saveSettingsGroup.jpegQualityText;
    var jpegQualityLabel = setupWindow.leftGroup.outputPanel.saveSettingsGroup.jpegQualityLabel;
    var outputBitDepthDropDown = setupWindow.leftGroup.outputPanel.saveSettingsGroup.outputBitDepthDropDown;
    var outputBitDepthLabel = setupWindow.leftGroup.outputPanel.saveSettingsGroup.outputBitDepthLabel;
    var okButton = setupWindow.rightGroup.okButton;
    var cancelButton = setupWindow.rightGroup.cancelButton;
    var toningPanel = setupWindow.leftGroup.toningPanel;
    var deghostCheckBox = setupWindow.leftGroup.inputPanel.bracketGroup.deghostCheckBox;
    //set default values
    bracketBox.text = numberOfBrackets;
    filterText.text = fileMask;
    //mergeToHDR.useAlignment = true;
    alignCheckBox.value = mergeToHDR.useAlignment;
    deghostCheckBox.value = hdrDeghosting;
    outputFilenameText.text = outputFilename;
    jpegQualityText.text = jpegQuality;
    saveDropDown.add("item", "JPEG");
    saveDropDown.add("item", "TIFF");
    saveDropDown.add("item", "TIFF LZW");
    saveDropDown.add("item", "TIFF ZIP");
    saveDropDown.add("item", "PSD");
    saveDropDown.selection = 0;
    outputBitDepthDropDown.add("item", "8");
    outputBitDepthDropDown.add("item", "16");
    outputBitDepthDropDown.add("item", "32");
    outputBitDepthDropDown.selection = 0;
    //event handlers
    sourceBox.onChange = function()
        sourceFolder = new Folder(sourceBox.text);
        okButton.enabled = sourceFolder != null && outputFolder != null && sourceFolder.exists && outputFolder.exists;
    sourceBrowse.onClick = function()
        sourceFolder = Folder.selectDialog ("Select the source folder");
        if(sourceFolder != null)
            sourceBox.text = sourceFolder.fullName;
        okButton.enabled = sourceFolder != null && outputFolder != null && sourceFolder.exists && outputFolder.exists;
    bracketBox.onChange = function() { numberOfBrackets = bracketBox.text; };
    filterText.onChange = function() { fileMask = filterText.text; };
    alignCheckBox.onClick = function() { mergeToHDR.useAlignment = alignCheckBox.value; };
    deghostCheckBox.onClick = function() { hdrDeghosting = deghostCheckBox.value; };
    outputBox.onChange = function()
        outputFolder = new Folder(outputBox.text);
        okButton.enabled = sourceFolder != null && outputFolder != null && sourceFolder.exists && outputFolder.exists;
    outputBrowse.onClick = function()
        outputFolder = Folder.selectDialog ("Select the output folder");
        if(outputFolder != null)
            outputBox.text = outputFolder.fullName;
        okButton.enabled = sourceFolder != null && outputFolder != null && sourceFolder.exists && outputFolder.exists;
    outputFilenameText.onChange = function() { outputFilename = outputFilenameText.text; };
    saveDropDown.onChange = function()
        saveType = saveDropDown.selection.text;
        jpegQualityText.enabled = saveDropDown.selection.text == "JPEG";
        jpegQualityLabel.enabled = saveDropDown.selection.text == "JPEG";
        if(saveDropDown.selection.text == "JPEG")
            outputBitDepthDropDown.selection = 0;
        outputBitDepthDropDown.enabled = saveDropDown.selection.text != "JPEG";
        outputBitDepthLabel.enabled = saveDropDown.selection.text != "JPEG";
    jpegQualityText.onChange = function() { jpegQuality = jpegQualityText.text; };
    outputBitDepthDropDown.onChange = function()
        outputBitDepth = outputBitDepthDropDown.selection.text;
        toningPanel.enabled = outputBitDepth != 32;
    okButton.onClick = function() { setupWindow.hide(); cleanUpPreviews(); };
    cancelButton.onClick = function() { sourceFolder = null, setupWindow.hide(); cleanUpPreviews(); };
    saveDropDown.onChange();
    outputBitDepthDropDown.onChange();
    setupWindow.show();
function cleanUpPreviews()
    if(originalDoc != null)
        originalDoc.close(SaveOptions.DONOTSAVECHANGES);
        originalDoc = null;
    if(previewDoc != null)
        previewDoc.close(SaveOptions.DONOTSAVECHANGES);
        previewDoc = null;
function generateToningPanel(toningPanel)
    var leftToningGroup = toningPanel.add("group{orientation:'column',alignChildren:'fill'}");
    var rightToningGroup = toningPanel.add("group{orientation:'column',alignChildren:'fill'}");
    var presetGroup = leftToningGroup.add("group{orientation:'row'}");
    var presetDropDown = presetGroup.add("dropdownlist");
    var loadPresetButton = presetGroup.add("button", undefined, "Load Preset");
    var edgePanel = leftToningGroup.add("panel",undefined,"Edge Glow");
    var radiusSlider = createSliderControl(edgePanel.add("group"), "  Radius: ", "px", 0, 500, 0, hdrRadius, function(newValue){ hdrRadius = newValue; });
    var strengthSlider = createSliderControl(edgePanel.add("group"), "Strength: ", "", 0, 4.0, 2, hdrStrength, function(newValue){ hdrStrength = newValue; });
    var edgeGroup = edgePanel.add("group");
    var smoothEdgesBox = edgeGroup.add("checkbox",undefined, "Smooth Edges");
    var detailPanel = leftToningGroup.add("panel",undefined,"Tone and Detail");
    var gammaSlider = createSliderControl(detailPanel.add("group"), "  Gamma: ", "", 0.1, 2.0, 2, hdrGamma, function(newValue){ hdrGamma = newValue; });
    var exposureSlider = createSliderControl(detailPanel.add("group"), "Exposure: ", "", -5.0, 5.0, 2, hdrExposure, function(newValue){ hdrExposure = newValue; });
    var detailSlider = createSliderControl(detailPanel.add("group"), "     Detail: ", "%", -300, 300, 0, hdrDetail, function(newValue){ hdrDetail = newValue; });
    var advancedPanel = leftToningGroup.add("panel",undefined,"Advanced");
    var shadowSlider = createSliderControl(advancedPanel.add("group"), "  Shadow: ", "%", -100, 100, 0, hdrShadow, function(newValue){ hdrShadow = newValue; });
    var highlightSlider = createSliderControl(advancedPanel.add("group"), " Highlight: ", "%",  -100, 100, 0, hdrHighlights, function(newValue){ hdrHighlights = newValue; });
    var vibranceSlider = createSliderControl(advancedPanel.add("group"), "  Vibrance: ", "%",  -100, 100, 0, hdrVibrance, function(newValue){ hdrVibrance = newValue; });
    var saturationSlider = createSliderControl(advancedPanel.add("group"), "Saturation: ", "%",  -100, 100, 0, hdrSaturation, function(newValue){ hdrSaturation = newValue; });
    var toningCurvePanel = leftToningGroup.add("panel{text:'Toning Curve',alignChildren:'fill'}");
    var curveBox = toningCurvePanel.add("edittext", undefined, hdrCurve);
    //right side (preview panel)
    var previewGroup = rightToningGroup.add("panel", undefined, "Preview");
    var selectPreviewButton = previewGroup.add("button",undefined,"Select File(s)...");
    var previewButton = previewGroup.add("button",undefined,"Update Preview");
    var zoomGroup = previewGroup.add("group");
    zoomGroup.add("statictext",undefined, "zoom");
    var zoomBox = zoomGroup.add("edittext { text: '100', characters: 3, enabled: false } ");
    var previewZoomSlider = previewGroup.add("slider { minvalue: 10, maxvalue: 200, value: 100, enabled: false }");
    //default values
    smoothEdgesBox.value = hdrSmooth;
    previewButton.enabled = app.documents.length > 0;
    var presetFiles = getPresetFiles();
    var updateSliders = function()
        radiusSlider(hdrRadius);
        strengthSlider(hdrStrength);
        smoothEdgesBox.value = hdrSmooth;
        exposureSlider(hdrExposure);
        gammaSlider(hdrGamma);
        detailSlider(hdrDetail);
        shadowSlider(hdrShadow);
        highlightSlider(hdrHighlights);
        vibranceSlider(hdrVibrance);
        saturationSlider(hdrSaturation);
        curveBox.text = hdrCurve;
    if(presetFiles.length > 0)
        for(var f in presetFiles)
            presetDropDown.add("item", presetFiles[f].displayName.replace(".hdt",""));
        presetDropDown.selection = 0;
        loadPreset(presetFiles[0]);
        presetDropDown.onChange = function()
            loadPreset(presetFiles[presetDropDown.selection.index]);
            updateSliders();
    //event handlers
    loadPresetButton.onClick = function()
        loadPreset(null);
        updateSliders();
    smoothEdgesBox.onClick = function () { hdrSmooth = smoothEdgesBox.value; };
    curveBox.onChange = function () { hdrCurve = curveBox.text; };
    selectPreviewButton.onClick = function()
        var selectedFiles = File.openDialog("Select file(s) to load for preview", function(){return true;}, true);
        if(selectedFiles != null)
            cleanUpPreviews();
            if(selectedFiles instanceof Array)
                if(selectedFiles.length > 1)
                    mergeToHDR.outputBitDepth= 32;
                    mergeToHDR.mergeFilesToHDR( selectedFiles, false, -2 );
                else
                    doOpenFile(selectedFiles[0].fullName);
            else
                doOpenFile(selectedFiles.fullName);
            originalDoc = app.activeDocument;
            previewButton.enabled = originalDoc != null;
            zoomBox.text = getZoomLevel();
            previewZoomSlider.value = getZoomLevel();
    previewButton.onClick = function()
        if(originalDoc != null)
            var tempOutputBitDepth = outputBitDepth;
            outputBitDepth = 16;
            if(previewDoc != null)
                previewDoc.close(SaveOptions.DONOTSAVECHANGES);
            previewDoc = originalDoc.duplicate("HDR Preview");
            app.activeDocument = previewDoc;
            setZoomLevel(previewZoomSlider.value);
            convertTo32Bit();
            doHDRToning();
            outputBitDepth = tempOutputBitDepth;
            waitForRedraw();
            zoomBox.enabled = previewDoc != null;
            previewZoomSlider.enabled = previewDoc != null;
    zoomBox.onChange = function()
        if(previewDoc != null)
            previewZoomSlider.value = zoomBox.text;
            setZoomLevel(previewZoomSlider.value);
    previewZoomSlider.onChange = function()
        if(previewDoc != null)
            zoomBox.text = previewZoomSlider.value.toFixed(0);
            setZoomLevel(previewZoomSlider.value);
    updateSliders();
function createSliderControl(group,label,postLabel,min,max,round,value,onValueChanged)
    var ignoreChange = false;
    group.add("statictext", undefined, label);
    var slider = group.add("slider",undefined,value,min,max);
    slider.alignment = "fill";
    var box = group.add("edittext",undefined,value);
    box.characters = 6;
    group.add("statictext", undefined, postLabel);
    slider.onChange = function()
        if(!ignoreChange)
            ignoreChange = true;
            box.text = slider.value.toFixed(round);
            onValueChanged(slider.value);
            ignoreChange = false;
    box.onChange = function()
        if(!ignoreChange)
            ignoreChange = true;
            slider.value = box.text;
            onValueChanged(box.text);
            ignoreChange = false;
    return function(newValue)
        slider.value = newValue;
        box.text = newValue.toFixed(round);
//forces a redraw while a script dialog is active (for preview)
var waitForRedraw = function()
    var desc = new ActionDescriptor();
    desc.putEnumerated(charIDToTypeID("Stte"), charIDToTypeID("Stte"), charIDToTypeID("RdCm"));
    executeAction(charIDToTypeID("Wait"), desc, DialogModes.NO);
function getZoomLevel()
    var ref = new ActionReference();
    ref.putEnumerated( charIDToTypeID("Dcmn"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") );
    var desc = executeActionGet(ref);
    return Number(desc.getDouble(stringIDToTypeID('zoom'))*100).toFixed(1);
function setZoomLevel( zoom )
    if(zoom < 1 ) zoom =1;
    var ref = new ActionReference();
    ref.putEnumerated( charIDToTypeID("capp"), charIDToTypeID("Ordn"), charIDToTypeID("Trgt") );
    var getScrRes = executeActionGet(ref).getObjectValue(stringIDToTypeID('unitsPrefs')).getUnitDoubleValue(s tringIDToTypeID('newDocPresetScreenResolution'))/72;
    var docRes = activeDocument.resolution;
    activeDocument.resizeImage( undefined, undefined, getScrRes/(zoom/100), ResampleMethod.NONE );
    var desc = new ActionDescriptor();
    ref = null;
    ref = new ActionReference();
    ref.putEnumerated( charIDToTypeID( "Mn  " ), charIDToTypeID( "MnIt" ), charIDToTypeID( 'PrnS' ) );
    desc.putReference( charIDToTypeID( "null" ), ref );
    executeAction( charIDToTypeID( "slct" ), desc, DialogModes.NO );
    activeDocument.resizeImage( undefined, undefined, docRes, ResampleMethod.NONE );
function ZeroPad(number,numZeros)
    var result = number.toString();
    while(result.length < numZeros)
        result = "0" + result;
    return result;
var getPresetFiles = function()
    var presetFolder = new Folder(app.path + "/Presets/HDR Toning");
    return presetFolder.getFiles("*.hdt");
var loadPreset = function(presetFile)
    if(presetFile == null)
        presetFile = File.openDialog("Select Preset","*.hdt");
    if(presetFile != null)
        var tmpStr = new String();
        var binaryData = new Array();
        presetFile.encoding = "BINARY";
        presetFile.open('r');
        while(!presetFile.eof)
            var ch = presetFile.readch();
            if ( ch.charCodeAt(0) == 0 ){
                tmpStr += ' ';
            else {
                tmpStr += ch;
            binaryData.push(ch.charCodeAt(0));
        presetFile.close();
        if(binaryData.length >= 40)
            // init start position for reading datas
            // start position for english version ( string "D e f a u l t" is in the preset file )
            var startPos = 38;
            if ( tmpStr.search ("P a r   d é f a u t") > -1 ){
                // start position for french preset file version ( string "P a r   d é f a u t" is in the preset file ) (==> + 6 bytes)
                startPos = 44;
            // if your preset file can't be read, try this : open it in notepad to see the string "D e f a u l t" in your language and add the code here to set startPos to 38 + diff between the length of ("D e f a u l t") and length of ("D e f a u l t" in your language)
            var curvePointCount = getUInt16(binaryData, startPos);
            if(binaryData.length >= 104 + curvePointCount * 4)
                var curvePointStr = "";
                for(var i = 0; i < curvePointCount; i++)
                    curvePointStr += getUInt16(binaryData, startPos + 4 + i * 4) + "," + getUInt16(binaryData, startPos + 2 + i * 4) + ((i < curvePointCount - 1) ? "," : "");
                hdrCurve = curvePointStr;
                hdrStrength =  getFloat32(binaryData,8);
                hdrRadius = getFloat32(binaryData, startPos + 10 + 5 * curvePointCount);
                hdrExposure = getFloat32(binaryData, startPos + 34 + 5 * curvePointCount);
                hdrSaturation = getFloat32(binaryData, startPos + 38 + 5 * curvePointCount);
                hdrDetail = getFloat32(binaryData, startPos + 42 + 5 * curvePointCount);
                hdrShadow = getFloat32(binaryData, startPos + 46 + 5 * curvePointCount);
                hdrHighlights = getFloat32(binaryData, startPos + 50 + 5 * curvePointCount);
                hdrGamma = getFloat32(binaryData, startPos + 54 + 5 * curvePointCount);
                hdrVibrance = getFloat32(binaryData, startPos + 58 + 5 * curvePointCount);
                hdrSmooth = getUInt16(binaryData, startPos + 62 + 5 * curvePointCount) != 0;
            else
                alert("Error Loading File", "Error", true);
        else
            alert("Error Loading File", "Error", true);
function getUInt16(byteArray,offset)
    return byteArray[offset] * 0x100 + byteArray[offset + 1];
function getUInt32(byteArray,offset)
    return byteArray[offset] * 0x1000000 + byteArray[offset + 1] * 0x10000 + byteArray[offset + 2] * 0x100 + byteArray[offset + 3];
function getFloat32(byteArray,offset)
    var bytes = getUInt32(byteArray,offset);
    var sign = (bytes & 0x80000000) ? -1 : 1;
    var exponent = ((bytes >> 23) & 0xFF) - 127;
    var significand = (bytes & ~(-1 << 23));
    if (exponent == 128)
        return sign * ((significand) ? Number.NaN : Number.POSITIVE_INFINITY);
    if (exponent == -127) {
        if (significand == 0) return sign * 0.0;
        exponent = -126;
        significand /= (1 << 22);
    } else significand = (significand | (1 << 23)) / (1 << 23);
    return sign * significand * Math.pow(2, exponent);
main();