MAN page from Other AfterStep-2.2.2-20060804.i386.rpm
export
Section: AfterStep X11 window manager (1)
Updated: AfterStep v.2.2.2
Index NAME
export - functionality for writing images into fileslibAfterImage/export.h
NAMEexport
- Image output into different file formats.
SEE ALSO
Structures : ASXpmExportParams ASPngExportParams ASJpegExportParams ASGifExportParams ASImageExportParamsFunctions : ASImage2file()Other libAfterImage modules : ascmap.h asfont.h asimage.h asvisual.h blender.h export.h import.h transform.h ximage.h
AUTHOR
Sasha Vasko <sasha at aftercode dot net>
NAMEEXPORT_GRAYSCALE
- save image as grayscale.EXPORT_ALPHA- save alpha channel if format permitsEXPORT_APPEND- if format allows multiple images - image will be appended
FUNCTION
Some common flags that could be used while writing images intodifferent file formats.
SOURCE
Source :
#define EXPORT_GRAYSCALE (0x01<<0)#define EXPORT_ALPHA (0x01<<1)#define EXPORT_APPEND (0x01<<3) /* adds subimage *//*****/
NAMEASPngExportParams
- parameters for export into PNG file.
SOURCE
Source :
typedef struct{ ASImageFileTypes type; ASFlagType flags ; int compression ;}ASPngExportParams ; NAMEASJpegExportParams
- parameters for export into JPEG file.
SOURCE
Source :
typedef struct{ ASImageFileTypes type; ASFlagType flags ; int quality ;}ASJpegExportParams ; NAMEASGifExportParams
- parameters for export into GIF file.
SOURCE
Source :
typedef struct{ ASImageFileTypes type; ASFlagType flags ; int dither ; int opaque_threshold ; unsigned short animate_delay ;}ASGifExportParams ; NAMEASTiffExportParams
- parameters for export into TIFF file.
SOURCE
Source :
typedef struct{ ASImageFileTypes type; ASFlagType flags ; CARD32 rows_per_strip ;/* these are suitable compressions : */#define TIFF_COMPRESSION_NONE 1#define TIFF_COMPRESSION_OJPEG 6 /* !6.0 JPEG */#define TIFF_COMPRESSION_JPEG 7#define TIFF_COMPRESSION_PACKBITS 32773 /* Macintosh RLE */#define TIFF_COMPRESSION_DEFLATE 32946 /* Deflate compression */ /* you should be able to use other values from tiff.h as well */ CARD32 compression_type ; int jpeg_quality ; int opaque_threshold ;}ASTiffExportParams ; NAMEASImageExportParams
- union of structures holding parameters for export into different file formats.
DESCRIPTION
Treatment of this union depends on what type of export was requested.
SEE ALSO
ASImageFileTypes
SOURCE
Source :
typedef union ASImageExportParams{ ASImageFileTypes type; ASXpmExportParams xpm; ASPngExportParams png; ASJpegExportParams jpeg; ASGifExportParams gif; ASTiffExportParams tiff;}ASImageExportParams; NAMEASImage2file()
SYNOPSIS
Bool ASImage2file( ASImage *im, const char *dir, const char *file, ASImageFileTypes type, ASImageExportParams *params );
INPUTS
- im
- - Image to write out.
- dir
- - directory name to write file into (optional, could be NULL)
- file
- - file name with or without directory name.
- type
- - output file format. ( see ASImageFileTypes )
- params
- - pointer to ASImageExportParams union's member for the above type, with additional export parameters, such as quality, compression, etc. If NULL then all defaults will be used.
RETURN VALUE
True on success. False - failure.
DESCRIPTION
ASImage2file will construct filename out of dir and file componentsand then will call specific filter to write out file in requestedformat.
NOTES
Some formats support compression, others support lossy compression,yet others allows you to limit number of colors and colordepth.Each specific filter will try to interpret those parameters in itsown way.
EXAMPLE
asmerge.c: ASMerge.3
Index
- NAME
- NAMEexport
- SEE ALSO
- AUTHOR
- NAMEEXPORT_GRAYSCALE
- FUNCTION
- SOURCE
- NAMEASPngExportParams
- SOURCE
- NAMEASJpegExportParams
- SOURCE
- NAMEASGifExportParams
- SOURCE
- NAMEASTiffExportParams
- SOURCE
- NAMEASImageExportParams
- DESCRIPTION
- SEE ALSO
- SOURCE
- NAMEASImage2file()
- SYNOPSIS
- INPUTS
- RETURN VALUE
- DESCRIPTION
- NOTES
- EXAMPLE
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