C# Class BitMiracle.LibTiff.Classic.Internal.JpegCodec

Inheritance: TiffCodec

Show file Open project: Core-Techs/TiffLibrary Class Usage Examples

Public Methods

Method	Description
Cleanup ( ) : void	Cleanups the state of the codec. Cleanup is called when codec is no longer needed (won't be used) and can be used for example to restore tag methods that were substituted.
DecodeRow ( byte buffer, int offset, int count, short plane ) : bool	Decodes one row of image data.
DecodeStrip ( byte buffer, int offset, int count, short plane ) : bool	Decodes one strip of image data.
DecodeTile ( byte buffer, int offset, int count, short plane ) : bool	Decodes one tile of image data.
DefStripSize ( int size ) : int	Calculates and/or constrains a strip size.
DefTileSize ( int &width, int &height ) : void	Calculate and/or constrains a tile size
EncodeRow ( byte buffer, int offset, int count, short plane ) : bool	Encodes one row of image data.
EncodeStrip ( byte buffer, int offset, int count, short plane ) : bool	Encodes one strip of image data.
EncodeTile ( byte buffer, int offset, int count, short plane ) : bool	Encodes one tile of image data.
GetTiff ( ) : Tiff
Init ( ) : bool
InitializeLibJPEG ( bool force_encode, bool force_decode ) : bool
JPEGResetUpsampled ( ) : void
JpegCodec ( Tiff tif, Compression scheme, string name ) : System
PostEncode ( ) : bool	Performs any actions after encoding required by the codec. PostEncode is called after encoding and can be used to release any external resources needed during encoding.
PreDecode ( short plane ) : bool	Prepares the decoder part of the codec for a decoding. PreDecode is called after SetupDecode and before decoding.
PreEncode ( short plane ) : bool	Prepares the encoder part of the codec for a encoding. PreEncode is called after SetupEncode and before encoding.
SetupDecode ( ) : bool	Setups the decoder part of the codec. SetupDecode is called once before PreDecode.
SetupEncode ( ) : bool	Setups the encoder part of the codec. SetupEncode is called once before PreEncode.

Private Methods

Method	Description
JPEGCleanup ( ) : void
JPEGDecode ( byte buffer, int offset, int count, short plane ) : bool	Decode a chunk of pixels. "Standard" case: returned data is not downsampled.
JPEGDecodeRaw ( byte buffer, int offset, int count, short plane ) : bool	Decode a chunk of pixels. Returned data is downsampled per sampling factors.
JPEGDefaultStripSize ( int s ) : int
JPEGDefaultTileSize ( int &tw, int &th ) : void
JPEGEncode ( byte buffer, int offset, int count, short plane ) : bool	Encode a chunk of pixels. "Standard" case: incoming data is not downsampled.
JPEGEncodeRaw ( byte buffer, int offset, int count, short plane ) : bool	Encode a chunk of pixels. Incoming data is expected to be downsampled per sampling factors.
JPEGPostEncode ( ) : bool	Finish up at the end of a strip or tile.
JPEGPreDecode ( short s ) : bool
JPEGPreEncode ( short s ) : bool	Set encoding state at the start of a strip or tile.
JPEGSetupDecode ( ) : bool
JPEGSetupEncode ( ) : bool
TIFFjpeg_abort ( ) : bool
TIFFjpeg_alloc_sarray ( int samplesperrow, int numrows ) : byte[][]
TIFFjpeg_create_compress ( ) : bool
TIFFjpeg_create_decompress ( ) : bool
TIFFjpeg_data_dest ( ) : void
TIFFjpeg_destroy ( ) : bool
TIFFjpeg_finish_compress ( ) : bool
TIFFjpeg_finish_decompress ( ) : bool
TIFFjpeg_read_header ( bool require_image ) : ReadResult
TIFFjpeg_read_raw_data ( byte data, int max_lines ) : int
TIFFjpeg_read_scanlines ( byte scanlines, int max_lines ) : int
TIFFjpeg_set_colorspace ( J_COLOR_SPACE colorspace ) : bool
TIFFjpeg_set_defaults ( ) : bool
TIFFjpeg_set_quality ( int quality, bool force_baseline ) : bool
TIFFjpeg_start_compress ( bool write_all_tables ) : bool
TIFFjpeg_start_decompress ( ) : bool
TIFFjpeg_suppress_tables ( bool suppress ) : bool
TIFFjpeg_tables_dest ( ) : bool
TIFFjpeg_write_raw_data ( byte data, int num_lines ) : int
TIFFjpeg_write_scanlines ( byte scanlines, int num_lines ) : int
TIFFjpeg_write_tables ( ) : bool
alloc_downsampled_buffers ( jpeg_component_info comp_info, int num_components ) : bool
cleanState ( ) : void
prepare_JPEGTables ( ) : bool
unsuppress_huff_table ( int tblno ) : void
unsuppress_quant_table ( int tblno ) : void

Method Details

Cleanup() public method

Cleanups the state of the codec.

Cleanup is called when codec is no longer needed (won't be used) and can be used for example to restore tag methods that were substituted.

public Cleanup ( ) : void
return	void

DecodeRow() public method

Decodes one row of image data.

public DecodeRow ( byte buffer, int offset, int count, short plane ) : bool
buffer	byte	The buffer to place decoded image data to.
offset	int	The zero-based byte offset in at /// which to begin storing decoded bytes.
count	int	The number of decoded bytes that should be placed /// to
plane	short	The zero-based sample plane index.
return	bool

DecodeStrip() public method

Decodes one strip of image data.

public DecodeStrip ( byte buffer, int offset, int count, short plane ) : bool
buffer	byte	The buffer to place decoded image data to.
offset	int	The zero-based byte offset in at /// which to begin storing decoded bytes.
count	int	The number of decoded bytes that should be placed /// to
plane	short	The zero-based sample plane index.
return	bool

DecodeTile() public method

Decodes one tile of image data.

public DecodeTile ( byte buffer, int offset, int count, short plane ) : bool
buffer	byte	The buffer to place decoded image data to.
offset	int	The zero-based byte offset in at /// which to begin storing decoded bytes.
count	int	The number of decoded bytes that should be placed /// to
plane	short	The zero-based sample plane index.
return	bool

DefStripSize() public method

Calculates and/or constrains a strip size.

public DefStripSize ( int size ) : int
size	int	The proposed strip size (may be zero or negative).
return	int

DefTileSize() public method

Calculate and/or constrains a tile size

public DefTileSize ( int &width, int &height ) : void
width	int	The proposed tile width upon the call / tile width to use after the call.
height	int	The proposed tile height upon the call / tile height to use after the call.
return	void

EncodeRow() public method

Encodes one row of image data.

public EncodeRow ( byte buffer, int offset, int count, short plane ) : bool
buffer	byte	The buffer with image data to be encoded.
offset	int	The zero-based byte offset in at /// which to begin read image data.
count	int	The maximum number of encoded bytes that can be placed /// to
plane	short	The zero-based sample plane index.
return	bool

EncodeStrip() public method

Encodes one strip of image data.

public EncodeStrip ( byte buffer, int offset, int count, short plane ) : bool
buffer	byte	The buffer with image data to be encoded.
offset	int	The zero-based byte offset in at /// which to begin read image data.
count	int	The maximum number of encoded bytes that can be placed /// to
plane	short	The zero-based sample plane index.
return	bool

EncodeTile() public method

Encodes one tile of image data.

public EncodeTile ( byte buffer, int offset, int count, short plane ) : bool
buffer	byte	The buffer with image data to be encoded.
offset	int	The zero-based byte offset in at /// which to begin read image data.
count	int	The maximum number of encoded bytes that can be placed /// to
plane	short	The zero-based sample plane index.
return	bool

GetTiff() public method

public GetTiff ( ) : Tiff
return	Tiff

Init() public method

public Init ( ) : bool
return	bool

InitializeLibJPEG() public method

public InitializeLibJPEG ( bool force_encode, bool force_decode ) : bool
force_encode	bool
force_decode	bool
return	bool

JPEGResetUpsampled() public method

public JPEGResetUpsampled ( ) : void
return	void

JpegCodec() public method

public JpegCodec ( Tiff tif, Compression scheme, string name ) : System
tif	Tiff
scheme	Compression
name	string
return	System

PostEncode() public method

Performs any actions after encoding required by the codec.

PostEncode is called after encoding and can be used to release any external resources needed during encoding.

public PostEncode ( ) : bool
return	bool

PreDecode() public method

Prepares the decoder part of the codec for a decoding.

PreDecode is called after SetupDecode and before decoding.

public PreDecode ( short plane ) : bool
plane	short	The zero-based sample plane index.
return	bool

PreEncode() public method

Prepares the encoder part of the codec for a encoding.

PreEncode is called after SetupEncode and before encoding.

public PreEncode ( short plane ) : bool
plane	short	The zero-based sample plane index.
return	bool

SetupDecode() public method

Setups the decoder part of the codec.

SetupDecode is called once before PreDecode.

public SetupDecode ( ) : bool
return	bool

SetupEncode() public method

Setups the encoder part of the codec.

SetupEncode is called once before PreEncode.

public SetupEncode ( ) : bool
return	bool