show3.c File Reference

#include <stdio.h>
#include <string.h>
#include <exec/types.h>
#include <graphics/gfxbase.h>
#include <intuition/intuition.h>
#include <iff.h>

Include dependency graph for show3.c:

Go to the source code of this file.

Functions
struct Library *	OpenLibrary ()
struct Screen *	OpenScreen ()
void	CenterScreen (register struct Screen *, int *, int *)
void	Fail (char *text, int status)
	main (int argc, char *argv[])

Variables
struct Library *	IntuitionBase = ((void *)0)
struct Library *	IFFBase = ((void *)0)
struct GfxBase *	GfxBase = ((void *)0)
struct NewScreen	ns
struct Screen *	screen [3] = { ((void *)0) , ((void *)0) , ((void *)0) }
APTR	ifffile = ((void *)0)
char *	fname [3] = { ((void *)0) , ((void *)0) , ((void *)0) }
int	fsiz = 0

Function Documentation

void CenterScreen	(	register struct Screen *	,
		int *	,
		int *
	)

Definition at line 12 of file CenterScreen.c.

{
  int c640, c320, r400, r200, w, h, max_x, max_y;
  struct Preferences prefs;
  extern struct GfxBase *GfxBase;

  GetPrefs(&prefs, sizeof(prefs));
  c640 = 640 + prefs.ColumnSizeChange;
  c320 = c640 / 2;
  r200 = 200 + prefs.RowSizeChange;
  r400 = r200 * 2;

  max_y = (GfxBase->DisplayFlags & PAL) ? MAX_Y_PAL : MAX_Y_NTSC;
  if (screen->ViewPort.Modes & LACE){
    max_y *= 2;
  }
  max_x = MAX_X;
  if (screen->ViewPort.Modes & HIRES){
    max_x *= 2;
  }
  if (screen->ViewPort.DWidth <= max_x) {
    w = screen->ViewPort.DWidth;
  }else{
    w = max_x;
  }
  if (screen->ViewPort.DHeight <= max_y) {
    h = screen->ViewPort.DHeight;
  }else{
    h = max_y;
  }

  if (screen->ViewPort.Modes & HIRES){
    screen->ViewPort.DxOffset += (c640 - w) / 2;
    *dx = screen->ViewPort.DxOffset / 2;
  }else{
      screen->ViewPort.DxOffset += (c320 - w) / 2;
      *dx = screen->ViewPort.DxOffset;
  }
  if (screen->ViewPort.Modes & LACE){
    screen->ViewPort.DyOffset += (r400 - h) / 2;
    *dy = screen->ViewPort.DyOffset / 2;
  }else{
    screen->ViewPort.DyOffset += (r200 - h) / 2;
    *dy = screen->ViewPort.DyOffset;
  }

  RemakeDisplay();
}

void Fail	(	char *	text,
		int	status
	)

Definition at line 36 of file show3.c.

References fname, fsiz, IFFBase, IntuitionBase, and screen.

{
    int i;

    if(ifffile) CloseIFF(ifffile);
    if(screen[0]) CloseScreen(screen[0]);
    if(screen[1]) CloseScreen(screen[1]);
    if(screen[2]) CloseScreen(screen[2]);
    if (fsiz) {
      for (i=0; i<3; i++) {
        if (fname[i]) FreeMem(fname[i], fsiz);
      }
    }
    if (*text) {
      printf("%s\n",text);
    }
    if(IFFBase) {
      if (i = IffError()) {
        printf("IffError = %ld\n", i);
      }
          CloseLibrary(IFFBase);    /* MUST ALWAYS BE CLOSED !! */
        }
    if(IntuitionBase) CloseLibrary(IntuitionBase);
    if(GfxBase) CloseLibrary((struct Library *)GfxBase);
    exit(status);
}

main	(	int	argc,
		char *	argv[]
	)

Definition at line 63 of file show3.c.

References fname, fsiz, IntuitionBase, and screen.

{
  long count,i;
  int dx, dy;
  WORD colortable[128];
  struct BitMapHeader *bmhd;

  if(!strcmp(argv[1],"?") || ((argc !=4) && (argc != 2))) {
    printf("Usage: %s redfile greenfile bluefile\n"
       "       %s filename (.[rgb] will be appended)\n",
       argv[0], argv[0]);
    exit(1);
  }
  if (argc == 4) {
    for (i=0; i<3; i++) {
      fname[i] = argv[i+1];
    }
  }else{
    fsiz = strlen(argv[1]) + 3;
    for (i=0; i<3; i++) {
      fname[i] = AllocMem(fsiz, 0L);
      if (!fname[i]) {
        Fail("Can't allocate memory", 1);
      }
      strcpy(fname[i], argv[1]);
      strcat(fname[i], ((i == 0) ? ".r" : ((i == 1) ? ".g" : ".b")));
    }
  }
  GfxBase = (struct GfxBase *)OpenLibrary("graphics.library",0L);
  if (!GfxBase) {
    Fail("Can't open graphics.library", 1);
  }
  IntuitionBase = OpenLibrary("intuition.library",0L);
  if (!IntuitionBase) {
    Fail("Can't open intuition.library", 1);
  }
  if(!(IFFBase = OpenLibrary(IFFNAME,IFFVERSION))) {
    Fail("Copy the iff.library to your LIBS: directory!", 1);
  }

  for (i=0; i<3; i++) {
    if(!(ifffile=OpenIFF(fname[i]))){
      Fail("Error opening file", 1);
    }
    if(!(bmhd=GetBMHD(ifffile))) {
      Fail("BitMapHeader not found", 1);
    }
    ns.Width      = bmhd->w;
    ns.Height     = bmhd->h;
    ns.Depth      = bmhd->nPlanes;
    ns.ViewModes  = GetViewModes(ifffile);

    if(!(screen[i] = OpenScreen(&ns))) {
      Fail("Can't open screen!", 1);
    }
    CenterScreen(screen[i], &dx, &dy);

    count = GetColorTab(ifffile,colortable);
    if(count>32L) count = 32L; /* Some HAM pictures have 64 colors ?! */
    LoadRGB4(&(screen[i]->ViewPort),colortable,count);

    if(!DecodePic(ifffile,&screen[i]->BitMap)) {
      Fail("Can't decode picture", 1);
    }
    CloseIFF(ifffile);
    ifffile = NULL;
  }
  SetTaskPri(FindTask(0L), 20L);    /* Run at high priority to reduce */
  for(;;) {             /* flicker! */
    if(!((*((UBYTE*)0xbfe001))&64)) break;  /* I know it's a hack */
    ScreenToFront(screen[0]);
    if(!((*((UBYTE*)0xbfe001))&64)) break;  /* I know it's a hack */
    ScreenToFront(screen[1]);
    if(!((*((UBYTE*)0xbfe001))&64)) break;  /* I know it's a hack */
    ScreenToFront(screen[2]);
  }
  Fail("", 0); /* Close the whole stuff */
}

struct Library * OpenLibrary

(

)

struct Screen * OpenScreen

(

)

Variable Documentation

char* fname[3] = { ((void *)0) , ((void *)0) , ((void *)0) }

Definition at line 31 of file show3.c.

int fsiz = 0

Definition at line 32 of file show3.c.

Referenced by Fail(), and main().

struct GfxBase* GfxBase = ((void *)0)

Definition at line 21 of file show3.c.

struct Library * IFFBase = ((void *)0)

Definition at line 20 of file show3.c.

Referenced by Fail(), main(), and save().

APTR ifffile = ((void *)0)

Definition at line 30 of file show3.c.

struct Library* IntuitionBase = ((void *)0)

Definition at line 20 of file show3.c.

Referenced by Fail(), and main().

struct NewScreen ns

Initial value:

=
{
  0,0,0,0,0,0,0,  ((void *)0) , CUSTOMSCREEN | SCREENQUIET,  ((void *)0) , (STRPTR)"Show3",  ((void *)0) ,
   ((void *)0) 
}

Definition at line 23 of file show3.c.

struct Screen* screen[3] = { ((void *)0) , ((void *)0) , ((void *)0) }

Definition at line 29 of file show3.c.