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JPEG

Classes and functions for handling JPEG picture files.

• Globals
  • JPEGStringToPictureMBS(buf as string) as picture
  • JPEGStringToPictureMBS(buf as string,allowdamaged as Boolean) as picture
  • PictureToJPEGStringMBS(pic as picture, quality as Integer = 80) as string
• Classes
  • class JPEG2000MBS
    • method Close
    • method Compress as Boolean
    • shared method Decode(Data as MemoryBlock) as Picture
    • shared method Decode(Data as string) as Picture
    • shared method Encode(pic as picture, Quality as Integer = 80) as MemoryBlock
    • method GetRow(Index as Integer, Row as MemoryBlock = nil) as MemoryBlock
    • method InitCompress(Width as Integer, Height as Integer, BytesPerPixel as Integer, BytesPerRow as Integer = 0) as Boolean
    • method InitDecompress(ImageData as MemoryBlock) as Boolean
    • method SetRow(Index as Integer, Row as MemoryBlock) as Boolean
    • property BytesPerPixel as Integer
    • property BytesPerRow as Integer
    • property Height as Integer
    • property ImageData as MemoryBlock
    • property Options as String
    • property Width as Integer
  • class JPEGExporterMBS
    • method Export
    • method ExportCMYK(data as memoryblock, width as UInt32, height as UInt32, rowbytes as UInt32)
    • method ExportGray
    • method ExportGray(data as memoryblock, width as UInt32, height as UInt32, rowbytes as UInt32)
    • method ExportRGB(data as memoryblock, width as UInt32, height as UInt32, rowbytes as UInt32)
    • method ExportRGBwithRowDataEvent(width as UInt32, height as UInt32, rowbytes as UInt32)
    • shared method GetJPEGVersion as String
    • shared method SetAPI(API as Ptr = nil)
    • shared property API as String
    • property data as string
    • property DCTMethod as Integer
    • property ErrorCode as Integer
    • property ErrorMessage as string
    • property EXIFData as String
    • property file as folderitem
    • property HorizontalResolution as Integer
    • property OptimizeCoding as Boolean
    • property Path as String
    • property Picture as Picture
    • property ProfileData as String
    • property Progressive as Boolean
    • property Quality as Integer
    • property ResolutionUnit as Integer
    • property VerticalResolution as Integer
    • property WarningMessage as String
    • property XMPData as String
    • property YieldTicks as Integer
    • property Markers(Index as Integer) as string
    • event Error(message as string, ErrorCode as Integer)
    • event GetRowData(index as Integer) as memoryblock
    • event Info(message as string, msglevel as Integer, ErrorCode as Integer)
    • event Warning(message as string, ErrorCode as Integer)
  • class JPEGImporterMarkerMBS
    • property Data as String
    • property DataLength as Integer
    • property Marker as Integer
    • property OriginalLength as Integer
  • class JPEGImporterMBS
    • method BlueTestPicture as picture
    • method CleanMarkers
    • method FinishJPEG
    • shared method GetJPEGVersion as String
    • method GreenTestPicture as picture
    • method Import
    • method ImportCMYK
    • method InitJPEG as boolean
    • method LoopJPEG as Integer
    • method MarkerCount as Integer
    • method MarkerItem(index as Integer) as JPEGImporterMarkerMBS
    • method ReadHeader as boolean
    • method RedTestPicture as picture
    • shared method SetAPI(API as Ptr = nil)
    • property AllowDamaged as boolean
    • shared property API as String
    • property BlockSmoothing as Boolean
    • property CMYK as Boolean
    • property ColorComponentCount as Integer
    • property ColorSpace as Integer
    • property CurrentDepth as Integer
    • property data as string
    • property ErrorMessage as string
    • property ExifData as String
    • property ExifOrientation as Integer
    • property ExifThumbnail as String
    • property FancyUpsampling as Boolean
    • property file as folderitem
    • property FileOffset as Integer
    • property Height as Integer
    • property HorizontalResolution as Integer
    • property Mode as Integer
    • property OriginalDepth as Integer
    • property Path as String
    • property Picture as Picture
    • property PictureData as MemoryBlock
    • property ProfileData as String
    • property ProgressiveMode as Boolean
    • property ReadExifData as Boolean
    • property ReadMarkers as Boolean
    • property ReadProfileData as Boolean
    • property ReadXMPData as Boolean
    • property ResolutionUnit as Integer
    • property ScaleFactor as Integer
    • property VerticalResolution as Integer
    • property WarningMessage as String
    • property Width as Integer
    • property XMPData as String
    • property YieldTicks as Integer
    • event Error(message as string, ErrorCode as Integer)
    • event HeadersRead as boolean
    • event Info(message as string, msglevel as Integer, ErrorCode as Integer)
    • event Warning(message as string, ErrorCode as Integer)
  • class JPEGMovieMBS
    • method AddFrame(Image as MemoryBlock)
    • method AddFrame(Image as String)
    • method BuildMovie as String
    • property Duration as Double
    • property FrameCount as Integer
    • property Height as Integer
    • property SecondsPerFrame as Double
    • property TimeScale as Integer
    • property Width as Integer
  • class JPEGTransformationMBS
    • method close
    • method Transform as boolean
    • property CopyOption as Integer
    • property DebugLevel as Integer
    • property ErrorCode as Integer
    • property ErrorMessage as String
    • property Grayscale as Boolean
    • property InputFile as FolderItem
    • property MaxMemoryToUse as Integer
    • property MirrorHorizonal as Boolean
    • property MirrorVertical as Boolean
    • property OptimizeCoding as Boolean
    • property OutputFile as FolderItem
    • property Progressive as Boolean
    • property Rotate180 as Boolean
    • property Rotate270 as Boolean
    • property Rotate90 as Boolean
    • property Transpose as Boolean
    • property Transverse as Boolean
    • property Trim as Boolean
    • property WarningMessage as String
    • event Error(message as string, ErrorCode as Integer)
    • event Info(message as string, msglevel as Integer, ErrorCode as Integer)
    • event Warning(message as string, ErrorCode as Integer)
• Class Extensions
  • class FolderItem
    • method OpenAsJPEGMBS as picture
    • method OpenAsJPEGMBS(allowdamaged as Boolean) as picture
    • method OpenAsJPEGMBS(allowdamaged as Boolean,fileposition as Integer) as picture
    • method SaveAsJPEGMBS(pic as picture, quality as Integer = 80) as boolean
• Modules
  • module JPEGTurboMBS
    • method API as Ptr
    • method GetJPEGVersion as String
    • const Version = "2.0.3"

Release notes

• Version 21.1
  • Added ResolutionUnit constants to JPEGExporterMBS class.
• Version 20.2
  • Fixed a bug in JPEGDecompress plugin part with data structure alignment on Linux, which caused crash in JPEGStringToPictureMBS function.
• Version 20.1
  • Added ExifOrientation property for JPEGImporterMBS class.
  • Added ExifThumbnail property to JPEGImporterMBS class.
• Version 20.0
  • Fixed crash with LibJPEGTurbo when using JPEGExporterMBS class with memory allocation and file handling.
  • Fixed problem with Progressive property in JPEGExporterMBS not always being used.
• Version 19.5
  • Added JPEGTurboMBS module to use libjpeg-turbo in Xojo.
  • Added API functions to JPEGImporterMBS and JPEGExporterMBS class.
  • Added path property to JPEGExporterMBS and JPEGImporterMBS classes.
• Version 18.4
  • Raised limit for JPEGMovieMBS class to make larger videos.
• Version 18.2
  • Added JPEGImporterMBS.ProgressiveMode property.
• Version 17.3
  • Added GetJPEGVersion to JPEGImporterMBS and JPEGExporterMBS classes.
• Version 17.2
  • Added JPEGMovieMBS class.

The items on this page are in the following plugins: MBS Images Plugin.