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authorChristian A. Weber <chris@gna.ch>1992-06-02 16:44:18 +0000
committerChristian A. Weber <chris@gna.ch>1992-06-02 16:44:18 +0000
commitae24a0c6fabd13678c2def53b2074b0a8bf690ef (patch)
tree0b603aa550fe1d2cb86a2599b507249801b0ac15 /Examples
parentca96c0bbd4aaa1d629de51a6b7a2ac118ed0105c (diff)
downloadiff-library-ae24a0c6fabd13678c2def53b2074b0a8bf690ef.tar.gz
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Initial checkin
Diffstat (limited to 'Examples')
-rw-r--r--Examples/AnimExample.c129
-rw-r--r--Examples/Grabber.S66
-rw-r--r--Examples/Makefile69
3 files changed, 264 insertions, 0 deletions
diff --git a/Examples/AnimExample.c b/Examples/AnimExample.c
new file mode 100644
index 0000000..28d5357
--- /dev/null
+++ b/Examples/AnimExample.c
@@ -0,0 +1,129 @@
+/*
+ AnimExample.c - A simple DPaint animation player by Christian A. Weber.
+ This program is in the public domain, use and abuse at your own risk.
+ Requires the iff.library in the LIBS: dircetory. Compiles with
+ Lattice C V5.04 (LC -v -L AnimExample), should also work with Manx.
+*/
+
+#include <exec/types.h>
+#include <graphics/gfxbase.h>
+#include <intuition/intuition.h>
+#include <libraries/iff.h> /* Our iff header file */
+
+struct Library *IntuitionBase,*IFFBase, *OpenLibrary();
+struct GfxBase *GfxBase;
+
+struct NewScreen ns =
+{
+ 0,0,0,0,0,0,0, NULL, CUSTOMSCREEN|SCREENBEHIND|SCREENQUIET, NULL,
+ (STRPTR)"Anim Player Example by Christian A. Weber", NULL, NULL
+};
+
+struct Screen *screen1,*screen2, *OpenScreen();
+ULONG *ifffile;
+
+void SetOverscan(screen) /* Adjust the screen position for overscan */
+register struct Screen *screen;
+{
+ register WORD cols,rows,x=screen->Width,y=screen->Height;
+ register struct ViewPort *vp=&(screen->ViewPort);
+
+ cols = GfxBase->NormalDisplayColumns>>1;
+ rows = GfxBase->NormalDisplayRows; if(rows>300) rows>>=1;
+ x -= cols; if(vp->Modes & HIRES) x -= cols;
+ y -= rows; if(vp->Modes & LACE) y -= rows;
+ x >>=1; if(x<0) x=0; y >>=1; if(y<0) y=0; if(y>32) y=32;
+
+ if(vp->Modes & HAM) /* Correct overscan HAM color distortions */
+ {
+ if(GfxBase->ActiView->DxOffset-x < 96)
+ x=GfxBase->ActiView->DxOffset-96;
+ }
+ vp->DxOffset = -x; vp->DyOffset = -y;
+ MakeScreen(screen); RethinkDisplay();
+}
+
+void Fail(text) /* Print error message, free resources and exit */
+char *text;
+{
+ printf("%s, IFFError = %ld\n",text,IFFError());
+
+ if(ifffile) CloseIFF(ifffile);
+ if(screen1) CloseScreen(screen1);
+ if(screen2) CloseScreen(screen2);
+
+ if(IFFBase) CloseLibrary(IFFBase); /* MUST ALWAYS BE CLOSED !! */
+ CloseLibrary(IntuitionBase);
+ CloseLibrary(GfxBase);
+ exit(0);
+}
+
+void main(argc,argv)
+int argc;
+char **argv;
+{
+ register LONG count,i,delay;
+ register ULONG *form,*loopform;
+ struct BitMapHeader *bmhd;
+ UWORD colortable[128];
+
+ if((argc != 4) || !strcmp(argv[1],"?")) {
+ printf("Format: %s filename <delaytime> <# of loops>\n",argv[0]);
+ exit(20);
+ }
+
+ GfxBase = (struct GfxBase *)OpenLibrary("graphics.library",0L);
+ IntuitionBase = OpenLibrary("intuition.library",0L);
+
+ if(!(IFFBase = OpenLibrary(IFFNAME,IFFVERSION))) {
+ printf("Copy the iff.library to your LIBS: directory!\n");
+ exit(10);
+ }
+
+ if(!(ifffile=OpenIFF(argv[1]))) Fail("Error opening file");
+ form=ifffile+3; /* Skip FORM....ANIM */
+
+ if(ifffile[2] != ID_ANIM) Fail("Not an ANIM file");
+ if(!(bmhd=GetBMHD(form))) Fail("BitMapHeader not found");
+
+ ns.Width = bmhd->w;
+ ns.Height = bmhd->h;
+ ns.Depth = bmhd->nPlanes;
+ ns.ViewModes = GetViewModes(form);
+
+ if(!(screen1 = OpenScreen(&ns))) Fail("Can't open screen 1!");
+ if(!(screen2 = OpenScreen(&ns))) Fail("Can't open screen 2!");
+ SetOverscan(screen1); SetOverscan(screen2);
+
+ count = GetColorTab(form,colortable);
+ if(count>32L) count = 32L; /* Some HAM pictures have 64 colors ?! */
+ LoadRGB4(&(screen1->ViewPort),colortable,count);
+ LoadRGB4(&(screen2->ViewPort),colortable,count);
+
+ /* Decode and display the first frame: */
+ if(!DecodePic(form,&screen1->BitMap)) Fail("Can't decode picture");
+ DecodePic(form,&screen2->BitMap);
+ ScreenToFront(screen2);
+ if((delay=atol(argv[2])) > 1) Delay(delay);
+
+ /* Decode and display the second frame: copy and modify the first one */
+ form=FindChunk(ifffile+3,0L); /* First FORM containing a DLTA */
+ if(!ModifyFrame(form,&screen1->BitMap)) Fail("Can't decode frame");
+ ScreenToFront(screen1);
+ if(delay>1) Delay(delay);
+
+ loopform=FindChunk(form,0L); /* FORM to start loop at */
+ for(i=0; i<atol(argv[3]); ++i) /* Loop n times */
+ {
+ for(form=loopform; *form==ID_FORM; form=FindChunk(form,0L))
+ {
+ register struct Screen *dummy;
+ if(!ModifyFrame(form,&screen2->BitMap)) Fail("Can't decode frame");
+ dummy=screen1; screen1=screen2; screen2=dummy; /* Flip screens */
+ ScreenToFront(screen1);
+ if(delay>1) Delay(delay);
+ }
+ }
+ Fail("done"); /* Normal termination */
+}
+
diff --git a/Examples/Grabber.S b/Examples/Grabber.S
new file mode 100644
index 0000000..1a7faa1
--- /dev/null
+++ b/Examples/Grabber.S
@@ -0,0 +1,66 @@
+**
+** $Id: Grabber.S,v 21.1 92/05/28 17:09:27 chris Exp $
+** $Revision: 21.1 $
+**
+** $Filename: Examples/Grabber.S $
+** $Authors: Christian Haller, CHW $
+** $Release: 21.1 $
+** $Date: 92/05/28 17:09:27 $
+**
+** Example for low level Assembler hackers :-)
+**
+** This program saves the contents of the first screen as an IFF file
+** with filename 'RAM:grabber.pic'. The iff.library is required.
+** If you use the DevPac assembler, type 'Genim2 Grabber' to assemble.
+** For simplicity, this program uses hard coded constants. You may wish
+** to use the appropriate standard header files instead.
+**
+** THIS IS PD. NO WARRANTY. USE AT YOUR OWN RISK.
+**
+
+Main: move.l 4,a6 ; AbsExecBase
+ lea IFFName(PC),a1 ; Library Name
+ moveq #16,d0 ; Required library version
+ jsr -552(a6) ; OpenLibrary()
+ move.l d0,a4 ; A4 : IFF Library Base
+ tst.l d0 ; Did we get it ?
+ bne.s IFFOpen ; Yes --->
+ moveq #20,d0 ; Return-code RETURN_FAIL
+ rts ; Return to CLI
+IFFOpen:
+ lea IntuiName(PC),a1 ; Intuition Library Name
+ jsr -408(a6) ; OldOpenLibrary()
+ move.l d0,a5 ; A5 : IntuitionBase
+
+ move.l 60(a5),a0 ; IntuitionBase->FirstScreen
+ move.l 88(a0),d6 ; Screen.BitMap
+
+ move.l 48(a0),a1 ; struct Colormap
+ move.l 4(a1),d7 ; struct ColorTable
+ lea 44(a0),a1 ; sc_ViewPort
+ move.w 32(a1),d1 ; vp_Modes
+ moveq #1,d0 ; Set cruncher-flag
+ btst #11,d1 ; Hold And Modify ?
+ beq.s NoHam ; no --->
+ bset #7,d0 ; Set HAM-Flag for IFF.lib
+NoHam:
+ move.l a4,a6 ; IFFBase
+ lea FileName(PC),a0 ; Name of file to save
+ move.l d6,a1 ; Pointer to BitMap
+ move.l d7,a2 ; Pointer to ColorMap
+ jsr -66(a6) ; SaveBitMap()
+
+ move.l 4,a6 ; AbsExecBase
+ move.l a4,a1 ; IFFBase
+ jsr -414(a6) ; CloseLibrary() (IMPORTANT!)
+
+ move.l a5,a1 ; IntuitionBase
+ jsr -414(a6) ; CloseLibrary()
+
+ moveq #0,d0 ; DOS return code
+ rts
+
+IFFName: dc.b "iff.library",0
+IntuiName: dc.b "intuition.library",0
+FileName: dc.b "RAM:grabber.pic",0
+
diff --git a/Examples/Makefile b/Examples/Makefile
new file mode 100644
index 0000000..3343a0d
--- /dev/null
+++ b/Examples/Makefile
@@ -0,0 +1,69 @@
+##
+## $Id: $
+## $Revision: $
+##
+## $Filename: Examples/Makefile $
+## $Author: Christian A. Weber $
+## $Release: 21.1 $
+## $Date: 92/05/17 03:09:18 $
+##
+## Makefile to build iff.library examples
+##
+## COPYRIGHT (C) 1987-1993 BY CHRISTIAN A. WEBER, BRUGGERWEG 2,
+## CH-8037 ZUERICH, SWITZERLAND.
+## THIS FILE MAY BE FREELY DISTRIBUTED. USE AT YOUR OWN RISK.
+##
+
+ALL: EasyExample AnimExample GrabScreen
+
+
+#############################################################################
+## Flags
+
+CFLAGS = -cfustq -fid -ms -v -rr -s -O
+AFLAGS = -l -iINCLUDE:
+LFLAGS = ADDSYM
+
+
+#############################################################################
+## Rules
+
+.s.o:
+ Genam $(AFLAGS) $*.S
+
+.c.o:
+ LC $(CFLAGS) $*.c
+
+
+#############################################################################
+## EasyExample
+
+EX_STARTUP = LIB:c.o
+EX_MODULES = EasyExample.o
+EX_LIBS = LIB:lcr.lib
+
+EasyExample: $(EX_STARTUP) $(EX_MODULES) $(EX_LIBS)
+ BLINK FROM $(EX_STARTUP) $(EX_MODULES) TO $* LIB $(EX_LIBS)
+
+
+#############################################################################
+## AnimEXample
+
+AX_STARTUP = LIB:c.o
+AX_MODULES = AnimExample.o
+AX_LIBS = LIB:lcr.lib
+
+AnimExample: $(AX_STARTUP) $(AX_MODULES) $(AX_LIBS)
+ BLINK FROM $(AX_STARTUP) $(AX_MODULES) TO $* LIB $(AX_LIBS)
+
+
+#############################################################################
+## GrabScreen
+
+GS_STARTUP = LIB:c.o
+GS_MODULES = GrabScreen.o
+GS_LIBS = LIB:lcr.lib
+
+GrabScreen: $(GS_STARTUP) $(GS_MODULES) $(GS_LIBS)
+ BLINK FROM $(GS_STARTUP) $(GS_MODULES) TO $* LIB $(GS_LIBS)
+