#ifndef	OPAL_LOADSAVE_H
#define	OPAL_LOADSAVE_H

#ifndef	EXEC_TYPES_H
#include "exec/types.h"
#endif

#ifndef	EXEC_PORTS_H
#include "exec/ports.h"
#endif

#ifndef LIBRARIES_DOS_H
#include "libraries/dos.h"
#endif


#define OVLOADERPORT "OVLoader_Port"
#define OVSAVERPORT "OVSaver_Port"


	/* Loader Saver Interface Message */

struct LSIMessage
	{ struct Message lsi_Node;	/* Standard Message Node	*/
	  ULONG lsi_Type;		/* Command Type			*/
	  ULONG lsi_SubType;		/* Command SubType		*/
	  ULONG lsi_Flags;		/* See below			*/
	  SHORT lsi_X;			/* Horizontal pixel offset	*/
	  SHORT lsi_Y;			/* Vertical pixel offset	*/
	  SHORT lsi_Width;		/* Image Width			*/
	  SHORT lsi_Height;		/* Image Height			*/
	  SHORT lsi_Depth;		/* Image Depth			*/
	  SHORT lsi_Resolution;		/* Opal image resolution flags	*/
	  UBYTE *lsi_Planes[24];	/* BitPlane pointers		*/
	  ULONG lsi_Result;		/* Command Result		*/
	  BPTR	lsi_File;		/* File handle			*/
	  char	*lsi_FileName;		/* File name being loaded	*/
	  struct OpalScreen *lsi_OScrn;	/* OpalScreen as Source or Dest */
	  LONG	lsi_DataLength;		/* Misc data length		*/
	  APTR	lsi_Address;		/* Misc pointer 		*/
	};



#define LSICmd(dp,sp,m)	{PutMsg(dp,(struct Message *)m);WaitPort(sp);GetMsg(sp);}

	/* Message (Command) Types */

#define OVCMD_FORMATCHECK	0
#define OVCMD_LOADIMAGE		1
#define OVCMD_SAVEIMAGE		2
#define OVCMD_EXPUNGE		3
#define OVCMD_SENDDATA		4
#define OVCMD_GETDATA		5
#define OVCMD_ERROR		6
#define OVCMD_DONE		7
#define OVCMD_SETPALETTE	8
#define OVCMD_GETPALETTE	9
#define OVCMD_SETCLUT		10
#define OVCMD_GETCLUT		11
#define OVCMD_PARAMETERS	12
#define OVCMD_GETTHUMBNAIL	13



	/* Application specific messages */
#define OVCMD_USERMESSAGE	50
#define OVCMD_ASKUSER		51
#define OVCMD_PERCENTAGE	52
#define OVCMD_BUILDREQUEST	53


	/* Data Format for lsi_SubTypes */
/* note: x offset must be 0 for PLANAR and ILBM subtypes */
/* If the image has a palette, it MUST be sent first */

#define OVDF_PLANAR	0	/* Standard bit planes [1..24]		*/
#define OVDF_RGB	1	/* Three seperate R,G,B channels (bytes)*/
#define OVDF_GREY	2	/* 8bit grey scale values stored as bytes*/
#define OVDF_ILBM	3	/* Interleaved bitmap format		*/
#define OVDF_ALPHA	4	/* 8bit alpha data (byte per pixel)	*/
#define OVDF_STENCIL	5	/* 1bitplane stencil mask		*/


/* Flags for lsi_Flags valid in a OVCMD_LOADIMAGE and OVCMD_SAVEIMAGE message */
#define LSIF_ALPHA	  2	/* Load/Save Alpha Plane		*/
#define LSIF_STENCIL	  4	/* Load/Save Stencil Plane		*/
#define LSIF_IMAGEDATA	  8	/* Load/Save Image data			*/

  /* Flags for OVCMD_FormatCheck */
#define LSIF_HASIMAGE	1	/* Image has Image data			*/
#define LSIF_HASSTENCIL	2	/* Image has stencil data		*/
#define LSIF_HASALPHA	4	/* Image has Alpha channel data		*/
#define LSIF_RESVALID	8	/* Resolution flags are valid (load only)*/


  /* Error Codes, returned in lsi_Result of a OVCMD_ERROR message  */

#define LSI_ERR_OUTOFMEM	1
#define LSI_ERR_OPENFILE	2
#define LSI_ERR_BADFORMAT	3
#define LSI_ERR_FILEREAD	4
#define LSI_ERR_FILEWRITE	5
#define LSI_ERR_UNSUPPORTED	6
#define LSI_ERR_ERROR		100	/* General error */


/* List structure for opal.library's list of LSI modules */

struct LSIListEntry
	{ struct LSIListEntry *Succ;
	  struct LSIListEntry *Pred;
	  struct MsgPort *Port;
	  ULONG Flags;
	  char Name[30];
	};


/* Loader Flags */
#define OVLF_ALLOWIMAGE	 	1   /* File format handles Image data	*/
#define OVLF_ALLOWSTENCIL 	2   /* File format handles a stencil plane */
#define OVLF_ALLOWALPHA		4   /* File format handles Alpha data	*/
#define OVLF_NEEDFILENAME 	8   /* Needs a filename			*/

/* Saver Flags */
#define OVSF_ALLOWIMAGE		1   /* File format handles Image data	*/
#define OVSF_ALLOWSTENCIL	2   /* File format handles a stencil plane */
#define OVSF_ALLOWALPHA		4   /* File format handles Alpha data	*/
#define OVSF_NEEDFILENAME 	8   /* Needs a filename			*/

#endif