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Amiga Collections: Taifun
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Taifun 004 (1987-02-15)(Ossowski, Stefan)(DE)(PD).zip
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Taifun 004 (1987-02-15)(Ossowski, Stefan)(DE)(PD).adf
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MandelVroom
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IFF
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saveilbm.c
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C/C++ Source or Header
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1987-03-04
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4KB
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153 lines
/***************************************************************************
* SaveILBM.c -- Save screen as ILBM file
*
* Modified version of Carolyn Scheppner's ScreenSave program
*
* Using IFF rtns by J.Morrison and S.Shaw of Electronic Arts
*
***************************************************************************/
#include "SaveILBM.h"
/* CAMG Stuff */
typedef struct {
ULONG ViewModes;
} CamgChunk;
#define PutCAMG(context, camg) \
PutCk(context, ID_CAMG, sizeof(CamgChunk),(BYTE *)camg)
#define bufSize 512
extern struct IntuitionBase *IntuitionBase;
extern struct Screen *screen;
extern struct Window *MandWind;
struct Screen *frontScreen;
struct ViewPort *picViewPort;
struct BitMap *picBitMap;
WORD *picColorTable;
ULONG picViewModes;
/**************************************************************************
*
* Save the current screen as an ILBM file
*
*************************************************************************/
SaveILBM(FileName)
char *FileName;
{
LONG file;
IFFP iffp = NO_FILE;
int l;
WindowToFront(MandWind);
if (!(file = Open(FileName, MODE_NEWFILE))) {
printf("Can't open file %s\n",FileName);
return(0);
}
Write(file,"x",1); /* 1.1 so Seek to beginning works ? */
frontScreen = screen;
picViewPort = &( frontScreen->ViewPort );
picBitMap = (struct BitMap*)picViewPort->RasInfo->BitMap;
picColorTable = (WORD *)picViewPort->ColorMap->ColorTable;
picViewModes = (ULONG)picViewPort->Modes;
iffp = PutPicture(file, picBitMap, picColorTable, picViewModes);
Close(file);
if (iffp == IFF_OKAY) {
printf("Screen saved\n");
}
printf("Done\n");
} /* SaveILBM */
/** PutPicture() ***********************************************************
*
* Put a picture into an IFF file.
* This procedure calls PutAnILBM, passing in an <x, y> location of <0, 0>,
* a NULL mask, and a locally-allocated buffer. It also assumes you want to
* write out all the bitplanes in the BitMap.
*
***************************************************************************/
Point2D nullPoint = {0, 0};
IFFP PutPicture(file, bitmap, colorMap, viewmodes)
LONG file; struct BitMap *bitmap;
WORD *colorMap; ULONG viewmodes;
{
BYTE buffer[bufSize];
return( PutAnILBM(file, bitmap, NULL,
colorMap, bitmap->Depth, viewmodes,
&nullPoint, buffer, bufSize) );
}
/** PutAnILBM() ************************************************************
*
* Write an entire BitMap as a FORM ILBM in an IFF file.
* This version works for any display mode (C. Scheppner).
*
* Normal return result is IFF_OKAY.
*
* The utility program IFFCheck would print the following outline of the
* resulting file:
*
* FORM ILBM
* BMHD
* CAMG
* CMAP
* BODY (compressed)
*
***************************************************************************/
#define CkErr(expression) {if (ifferr == IFF_OKAY) ifferr = (expression);}
IFFP PutAnILBM(file, bitmap, mask, colorMap, depth,
viewmodes, xy, buffer, bufsize)
LONG file;
struct BitMap *bitmap;
BYTE *mask; WORD *colorMap; UBYTE depth;
ULONG viewmodes;
Point2D *xy; BYTE *buffer; LONG bufsize;
{
BitMapHeader bmHdr;
CamgChunk camgChunk;
GroupContext fileContext, formContext;
IFFP ifferr;
WORD pageWidth, pageHeight;
pageWidth = (bitmap->BytesPerRow) << 3;
pageHeight = bitmap->Rows;
ifferr = InitBMHdr(&bmHdr, bitmap, mskNone,
cmpByteRun1, 0, pageWidth, pageHeight);
/* You could write an uncompressed image by passing cmpNone instead
* of cmpByteRun1 to InitBMHdr. */
bmHdr.nPlanes = depth; /* This must be <= bitmap->Depth */
if (mask != NULL) bmHdr.masking = mskHasMask;
bmHdr.x = xy->x; bmHdr.y = xy->y;
camgChunk.ViewModes = viewmodes;
CkErr( OpenWIFF(file, &fileContext, szNotYetKnown) );
CkErr(StartWGroup(&fileContext, FORM, szNotYetKnown, ID_ILBM, &formContext));
CkErr( PutBMHD(&formContext, &bmHdr) );
CkErr( PutCAMG(&formContext, &camgChunk) );
CkErr( PutCMAP(&formContext, colorMap, depth) );
CkErr( PutBODY(&formContext, bitmap, mask, &bmHdr, buffer, bufsize) );
CkErr( EndWGroup(&formContext) );
CkErr( CloseWGroup(&fileContext) );
return( ifferr );
}