local getIndex = function(tbl, index){return (index in tbl) && tbl[index];}
function PreUpload(task,reserved)
{
local cfg = {
findInPath = true
, OptiPNG = @"optipng.exe"
, GraphicsMagick = @"gm.exe"
//, ImageMagick = @"d:\path\convert.exe" // better write full path! windows have its own convert.exe
, jpgQuality = 91 // IM/GM
, pngQuality = 95 // IM/GM, compression and filter
, pngJpgRatio = 2 // pngsize / jpgsize
} // priorities: OptiPNG, GraphicsMagick, ImageMagick
if ( task.type() == "TypeFile") {
local filename = task.getFileName();
if (GetFileExtension(filename).tolower()!="png") return true; // only png
if (!filename.find(@"\tmd_iu_temp\iu_temp_")) return true; // only IU screenshots
task.setStatusText("Optimizing...");
local convert = getIndex(cfg, "GraphicsMagick") || getIndex(cfg, "ImageMagick");
local convertExec = function(args) {
args = clone args;
local process = Process(convert, cfg.findInPath);
if ("GraphicsMagick" in cfg) args.insert(0,"convert");
process.setArguments(args);
process.setHidden(true);
process.start();
local exitCode = process.waitForExit(); // exit code
return exitCode
}
local jpgName = filename+".jpg";
local ec = 0;
if (!(FileExists(jpgName)&&GetFileSize(jpgName)>99)) {
if ("OptiPNG" in cfg) {
local process = Process(cfg.OptiPNG, cfg.findInPath);
process.setArguments([filename]);
process.setHidden(true);
process.start();
local exitCode = process.waitForExit();
} else if (convert) {
convertExec(["-quality", cfg.pngQuality, filename, filename]);
}
if (convert) {
ec = convertExec(["-sampling-factor", "4:4:4", "-quality", cfg.jpgQuality, filename, jpgName]);
}
}
if (convert && ec==0 && (GetFileSize(filename) / GetFileSize(jpgName) >= cfg.pngJpgRatio)) {
if (GetFileSize(jpgName)>99) {
task.setDisplayName( ExtractFileName(jpgName) );
task.setFileName(jpgName);
}
}
}
return true;
}
function PostUpload(task,reserved) {
return true;
}
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