#ifndef SVEXTRA_H
#define SVEXTRA_H

//   James Davis - jedavis@cs.stanford.edu

//   Additions to the simple video library in 
//   /usr/people/4Dgifts/examples/dmedia/video/simplevideo

//   Note that we need the svPriv.h private header file
//   Also note that the default headers sgi ships arent 
//   C++ smart, so you'll have to add the extern "C" junk to
//   them yourself. Ive done that locally in /usr/common/lib

// #include <gl/gl.h>
#include <sv/sv.h>
#include <sv/svPriv.h>
#include <vlUtil/vlUtil.h>

// ------
// svGetFrame() doesnt set the width and height correctly when we've been
// messing around with the capture size. This call will fix these fields 
// based on the current camera settings. Uses svGetCaptureSize()
void svFixImageSize(svImage *img);

// ------
// Just rolls svGetFrame() and svFixImageSize() into one function
void svBetterGetFrame(svImage *img);

// ------
// Get the current frame capture size settings. If you call just before
// or after getting a frame, one would expect it to do the right thing.
void svGetCaptureSize(int *x, int *y);

// ------
// Set the frame size you wish to capture. My indycam defaulted to 640x480
// This routine calls svGetFrame() once to make sure some things in
// sv are inited properly. It also sets the zoom factor to 1/2 if you
// make the frame smaller than 320x240.
void svSetCaptureSize(int xsize, int ysize);

// ------
// You can use this to avoid the zooming in svSetCaptureSize()
void svSetCaptureSizeNoZoom(int x, int y);

// ------
// This sets the zoom size on the capture. Ive found only (1,1) and
// (1,2) to be meaningful, but didnt test exhaustively. (1,2) shinks
// everything into a 320x240 window.  You shouldnt need to use this,
// since svSetCaptureSize calls it for you when relevant.
// At some point I found that using svFrameCount(1) helped make
// something work, but all seems fine without it now.
void svSetCaptureZoom(int numerator, int denominator);

// ------
// View the image in an old window, rather than creating a new window
// like svViewImage()
int svViewImageInWindow(svImage *image, long win);

#endif