Platforms to show: All Mac Windows Linux Cross-Platform
Required plugins for this example: MBS Images Plugin
You find this example project in your Plugins Download as a Xojo project file within the examples folder: /Images/JPEG/JPEG Benchmark
This example is the version from Sun, 17th Mar 2012.
Project "JPEG Benchmark.xojo_binary_project"
Class App Inherits Application
Const kEditClear = "&Delete"
Const kFileQuit = "&Quit"
Const kFileQuitShortcut = ""
End Class
Class Window1 Inherits Window
Control Listbox1 Inherits Listbox
ControlInstance Listbox1 Inherits Listbox
End Control
EventHandler Sub Open()
#pragma DisableBackgroundTasks
// trigger license dialogs
dim ji as new JPEGImporterMBS
dim je as new JPEGexporterMBS
// 3 different ways to scale images down from 6000 pixels to 400 pixels
// all three use same scaling method
// test image
dim f as FolderItem = SpecialFolder.Desktop.Child("test.jpg")
// try with pure RB
dim t as Double = Microseconds
for i as integer = 1 to 3
dim p as Picture = Picture.Open(f)
p = scale(p)
p.Save(SpecialFolder.Desktop.Child("testrb.jpg"), p.SaveAsJPEG, 80)
next
t = Microseconds - t
Listbox1.AddRow str(t/3000,"0.0")+"ms with pure RB"
// same with plugin
t = Microseconds
for i as integer = 1 to 3
dim p as Picture = f.OpenAsJPEGMBS
p = scale(p)
call SpecialFolder.Desktop.Child("testmbs1.jpg").SaveAsJPEGMBS(p, 80)
next
t = Microseconds - t
Listbox1.AddRow str(t/3000,"0.0")+"ms with MBS"
// and now with ScaleFactor
t = Microseconds
for i as integer = 1 to 3
dim j as new JPEGImporterMBS
j.YieldTicks = 0
j.file = f
j.ScaleFactor = 8
j.Import
dim p as Picture = j.Picture
p = scale(p)
call SpecialFolder.Desktop.Child("testmbs2.jpg").SaveAsJPEGMBS(p, 80)
next
t = Microseconds - t
Listbox1.AddRow str(t/3000,"0.0")+"ms with MBS and scalefactor"
End EventHandler
Function Scale(p as Picture) As Picture
dim q as new Picture(400, 300, 32)
q.Graphics.DrawPicture p, 0, 0, q.Width, q.Height, 0, 0, p.Width, p.Height
Return q
End Function
End Class
MenuBar MenuBar1
MenuItem FileMenu = "&File"
MenuItem FileQuit = "#App.kFileQuit"
MenuItem EditMenu = "&Edit"
MenuItem EditUndo = "&Undo"
MenuItem UntitledMenu1 = "-"
MenuItem EditCut = "Cu&t"
MenuItem EditCopy = "&Copy"
MenuItem EditPaste = "&Paste"
MenuItem EditClear = "#App.kEditClear"
MenuItem UntitledMenu0 = "-"
MenuItem EditSelectAll = "Select &All"
End MenuBar
End Project
See also:
The items on this page are in the following plugins: MBS Images Plugin.
