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-
- TABLE OF CONTENTS
-
- MPImage.library/FreeMPImage
- MPImage.library/LoadMPImage
- MPImage.library/MPImageErrorMessage
- MPImage.library/MPPlanarToChunky
- MPImage.library/RescaleMPImage
- MPImage.library/SaveMPImageA
- MPImage.library/SetMPImageScreen
-
-
- MPImage.library/FreeMPImage MPImage.library/FreeMPImage
-
- NAME
- FreeMPImage -- Free an image loaded using LoadMPImage() (V3)
-
- SYNOPSIS
- FreeMPImage( MPi )
- A0
-
- void FreeMPImage( struct MPImage * );
-
- FUNCTION
- Frees all data associated loaded with an image using LoadMPImage().
-
- INPUTS
- MPi - structure returned by LoadMPImage().
-
- RESULT
- None.
-
- EXAMPLE
-
- NOTES
-
- BUGS
-
- SEE ALSO
- LoadMPImage()
-
- MPImage.library/LoadMPImage MPImage.library/LoadMPImage
-
- NAME
- LoadMPImage -- Load an image in various formats (V4)
-
- SYNOPSIS
- MPi = LoadMPImage( filename,screen,Flags )
- D0 A0 A1 D0
-
- struct MPImage *LoadMPImage
- ( const char *,struct Screen *,ULONG);
-
- FUNCTION
- Load an image in BitMap, EGSBitMap or RGB format.
-
- INPUTS
- filename - name of file from which to load image
- - -c or -cnumber for clipboard
- screen - screen on which BitMap is to be used. May be NULL.
- Flags - Flags to control image loading
- Default is to remap to screen palette and return a bitmap in BitMap
- Only way to free is to call FreeMPImage().
-
- MPIF_EGS - Return E_EBitMap rather than BitMap.
- Overrides MPIF_RGB
- MPIF_CLONEBITMAP - You are free to zero BitMap/EGS_BitMap before
- calling FreeMPImage(). You must then call FreeBitMap() or
- E_DisposeBitMap() yourself. Ignored for MPIF_RGB/GREY. If screen
- supplied then clone is screen depth deep if possible.
- MPIF_NOREMAP - Don't remap to the current screen colors. Ignored
- for MPIF_EGS/RGB/GREY. Returns error if 24 bit input.
- MPIF_RGB - return Red, Green, Blue instead of BitMap.
- MPIF_GREY - return Red, Green, Blue instead of BitMap. If
- image is greyscale then Red, Green and Blue will be the same
- and GreyScale will be TRUE
- MPIF_FORCEGREY - As MPIF_GREY except input will always be remapped
- to greyscale.
- MPIF_LINEARGREY - Use linear (not colour based) mapping (V5.0)
-
- RESULT
- MPi - Pointer to an MPImage structure holding the image data.
- NULL if an error occurs. Use MPImageErrorMessage() to get error.
-
- EXAMPLE
-
- NOTES
- If file format is JPG and env/mpimage/djpeg is set (e.g. djpeg "%s" "%s")
- and not loading a BitMap then djpeg is used.
-
- If file format is PNG and env/mpimage/pngtopnm is set
- (e.g. pngtopnm "%s" >"%s") and not loading a BitMap then pngtopnm is used.
-
- Other fileformats are IBLM (depth 1 to 8 and 24, EHB, HAM6 and HAM8),
- PBM (all types) and any picture datatype. With dctv.library(3) can also
- load DCTV images.
-
- BUGS
- Waits 20 seconds for djpeg/pngtopnm to start then aborts.
- Fails to set an error message if failure loading from clipboard.
- Can also fail to set an error message in other (unknown) circumstances.
-
- SEE ALSO
- FreeMPImage(),MPImageErrorMessage,graphics.library/FreeBitMap(),
- egs.library/E_DisposeBitMap(),MPImageErrorMessage().
-
- MPImage.library/MPImageErrorMessage MPImage.library/MPImageErrorMessage
-
- NAME
- MPImageErrorMessage -- Return the last error set by MPImage.library. (V3)
-
- SYNOPSIS
- msg = MPImageErrorMessage()
- D0
-
- char *MPImageErrorMessage( void );
-
- FUNCTION
- Returns the last error message set by this opener of MPImage.library.
-
- INPUTS
- None.
-
- RESULT
- Formatted Error Message.
-
- EXAMPLE
-
- NOTES
-
- BUGS
-
- SEE ALSO
-
- MPImage.library/MPPlanarToChunky MPImage.library/MPPlanarToChunky
-
- NAME
- MPPlanarToChunky -- Convert a bitmap to a chunky buffer (V5)
-
- SYNOPSIS
- MPPlanarToChunky( bitmap, chunky, width, height )
- A0 A1 D0 D1
-
- void MPPlanarToChunky( struct BitMap *, UBYTE *, UWORD, UWORD);
-
- FUNCTION
- Converts a BitMap to a chunky buffer.
-
- INPUTS
- bitmap - Pointer to a standard bitmap.
- chunky - Pointer to a chunky buffer of sufficient size.
- width - Width of bitmap.
- height - Height of bitmap.
-
- RESULT
- None.
-
- EXAMPLE
-
- NOTES
-
- BUGS
-
- SEE ALSO
-
- MPImage.library/RescaleMPImage MPImage.library/RescaleMPImage
-
- NAME
- RescaleMPImage -- Scales an image created by LoadMPImage() (V3)
-
- SYNOPSIS
- error = RescaleMPImage(MPi, x, y)
- D0 A0 D0 D1
-
- BOOL RescaleMPImage(struct MPImage *, UWORD, UWORD);
-
- FUNCTION
- Scales an Image loaded by LoadMPImage() to new width and height.
-
- INPUTS
- MPi - Image loaded by LoadMPImage
- x - New width of image
- y - New height of image
-
- RESULT
- error - 1 for success, 0 for failure.
- Use MPImageErrorMessage() to get error.
-
- EXAMPLE
-
- NOTES
- Rescaling of bitmaps is done using BitMapScale().
- Other rescaling is done using custom code with smoothing.
-
- If this function fails then the MPImage is no longer usable and
- FreeMPImage() should be called to free it.
-
- Version 4.3 is faster for RGB.
-
- BUGS
- Bitmaps may not scale smoothly.
- The rescaling of EGS images is not efficent.
-
- SEE ALSO
- LoadMPImage(),MPImageErrorMessage(),FreeMPImage(),
- graphics.library/BitMapScale().
-
- MPImage.library/SaveMPImageA MPImage.library/SaveMPImageA
-
- NAME
- SaveMPImageA -- Save an image in various formats. (V3)
- SaveMPIMage -- Varargs version of SaveMPImageA (V3)
-
- SYNOPSIS
- succ = SaveMPImageA( file,red,green,blue,width,height,taglist)
- D0 A0 A1 A2 A3 D0 D1 A5
-
- BOOL SaveMPImageA( UBYTE *,UBYTE *,UBYTE *,UBYTE *,
- UWORD,UWORD,struct TagItem *);
-
- succ = SaveMPImage( file,red,green,blue,width,height,Tag1, ...)
-
- BOOL SaveMPImage( UBYTE *,UBYTE *,UBYTE *,UBYTE *,
- UWORD,UWORD,ULONG,...);
-
- FUNCTION
- Saves/displays an image held in chunky buffers.
-
- INPUTS
- file - filename to save file as. If NULL or "" then image is
- displayed on a custom screen.
- red - red chunky input.
- green - green chunky input.
- blue - blue chunky input.
- width - width of chunky buffers
- height - height of chunky buffers.
- taglist - pointer to TagItem array.
-
- Tags are:
-
- MPIS_MODE - Data is ULONG CAMG of output IFF file/screen EHB and HAM
- will be added if required. If not supplied then
- MPIS_MODENAME will be used. If that is not supplied then
- a CAMG mode will be generated.
- MPIS_MODENAME - Data is char * mode name of CAMG of output. Invalid
- names are ignored.
- MPIS_FORMAT - Data is char * specifying output format.
- Default is MPI_BW16. Values are:
- MPI_BW16 - "BW16" - 16 colour ILBM grey scale.
- MPI_BW256 - "BW256" - 256 colour ILBM grey scale.
- MPI_HAM6 - "HAM6" - HAM6 with fixed (internal) palette.
- MPI_HAM6P - "HAM6P" - HAM6 with generated or supplied
- palette - see MPIS_PALETTE.
- MPI_HAM8 - "HAM8" - HAM8 with fixed (internal) palette.
- MPI_HAM8P - "HAM8P" - HAM8 with generated or supplied
- palette - see MPIS_PALETTE.
- MPI_ILBM24 - "ILBM24" - 24 bit ILBM.
- MPI_PPM - "PPM" - P6 (or P5 if red,green and blue are
- the same).
- MPI_COLOUR - "COLOUR" - ILBM with generated or supplied
- palette - see MPIS_PALETTE.
- MPI_EHB - "EHB" - EHB with generated or supplied
- palette - see MPIS_PALETTE.
- MPI_JPEG - "JPEG" - JPEG see NOTES.
- MPI_PNM - "PNG" - PNG see NOTES.
- MPI_DCTV3 - "DCTV3" - DCTV 3 bit plane format
- MPI_DCTV4 - "DCTV4" - DCTV 4 bit plane format
- MPIS_PALETTE - Data is char * name of ILBM to load palette from.
- MPIS_COLOURS - Data is ULONG number of colours for MPI_COLOUR.
- Default is is number of colours in MPIS_PALETTE if
- supplied, otherwise 16. If greater than that from
- MPIS_PALETTE then ignored.
- MPIS_12BIT - Data is BOOL. If TRUE then use faster 12bit colour palette
- generating algorithm for MPI_COLOUR and MPI_EHB. Default
- is FALSE to use 18bit algorithm.
- MPIS_LINEAR - Data is BOOL. If TRUE then for BW16/BW256 use linear
- (not colour based) mapping. (V5.0)
- MPIS_GREYMAP - Data is UBYTE *. For BW16/BW256 palette map. Must point
- to at least 16 of value 0 to 15 for BW16, 256 bytes of
- 0 to 255 for BW255. (V5.0)
- Format is e.g. 0,2,3,4,5,6,7,8,9,10,11,12,13,14,15,1
- Colour 0 will be black
- Colour 1 will be white
- etc.
- This is the opposite to which you may expect!
-
- RESULT
- error - 1 for success, 0 for failure.
- Use MPImageErrorMessage() to get error.
-
- EXAMPLE
-
- NOTES
- If MPIS_FORMAT is BW16 or BW256 and red,green and blue are the same then
- a more efficent algorithm is used.
-
- When displaying on screen click in the top left and press a key to exit.
-
- If file format is JPEG and env/mpimage/cjpeg is set (e.g. cjpeg "%s" "%s")
- then cjpeg is used.
-
- If file format is PNG and env/mpimage/pnmtopng is set
- (e.g. 'pnmtopng "%s" >"%s"') then pnmtopng is used.
-
- BUGS
- Does not work for images > 1024 wide (except PPM/JPEG/PNG).
- The palette file requires a body which is loaded and then discarded.
-
- Waits 20 seconds for cjpeg/pnmtopng to start then aborts. This check is
- not fool proof and the PIPE:xxx can be left hanging.
-
- Prior to version 4.3 fails to determine a screen mode correctly.
-
- SEE ALSO
- MPImageErrorMessage().
-
- MPImage.library/SetMPImageScreen MPImage.library/SetMPImageScreen
-
- NAME
- SetMPImageScreen -- Sets the Screen name for progress requesters (V3)
-
- SYNOPSIS
- SetMPImageScreen(ScreenName,Flags)
- A0 D0
-
- void SetMPImageScreen(char *, ULONG);
-
- FUNCTION
- Sets the Screen Name for progress requesters for this opener.
-
- INPUTS
- ScreenName - Name of Public Screen, NULL for default
- Flags - 0 - Do not show progress requesters (default)
- - MPIF_PROGRESS - Do show progress requesters
- (except for non remapped bitmaps).
-
- RESULT
- None.
-
- EXAMPLE
-
- NOTES
- ScreenName must remain valid while MPImage.library is open.
-
- BUGS
-
- SEE ALSO
-
-