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/*
* Copyright (c) 1992 The Regents of the University of California.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#include <math.h>
#include "video.h"
#include "dither.h"
/* Array that remaps color numbers to actual pixel values used by X server. */
unsigned char pixel[256];
/* Arrays holding quantized value ranged for lum, cr, and cb. */
int lum_values[LUM_RANGE];
int cr_values[CR_RANGE];
int cb_values[CB_RANGE];
/* Structures used by the X server. */
Display *display;
/*
*--------------------------------------------------------------
*
* ConvertColor --
*
* Given a l, cr, cb tuple, converts it to r,g,b.
*
* Results:
* r,g,b values returned in pointers passed as parameters.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
static void
ConvertColor(l, cr, cb, r, g, b)
unsigned char l, cr, cb;
unsigned char *r, *g, *b;
{
double fl, fcr, fcb, fr, fg, fb;
fl = (double) l;
fcr = ((double) cr) - 128.0;
fcb = ((double) cb) - 128.0;
fr = fl + (1.40200 * fcb);
fg = fl - (0.71414 * fcb) - (0.34414 * fcr);
fb = fl + (1.77200 * fcr);
if (fr < 0.0) fr = 0.0;
else if (fr > 255.0) fr = 255.0;
if (fg < 0.0) fg = 0.0;
else if (fg > 255.0) fg = 255.0;
if (fb < 0.0) fb = 0.0;
else if (fb > 255.0) fb = 255.0;
*r = (unsigned char) fr;
*g = (unsigned char) fg;
*b = (unsigned char) fb;
}
/* Array back mapping pixel value to color number. Used for debugging and dumping
purposes.
*/
static char backpixel[256];
/*
*--------------------------------------------------------------
*
* ExecuteDisplay --
*
* Actually displays display plane in previously created window.
*
* Results:
* None.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
/***************************************************************
vid_stream->current->display is a pointer to a bitmap of dimensions
vid_stream->mb_width * 16 by vid_stream->mb_height * 16. The RGB
data are pixel interleaved. - WAR
***************************************************************/
extern int writeToStdout;
void ExecuteDisplay(vid_stream)
VidStream *vid_stream;
{
int iWidth, iHeight;
++totNumFrames;
fwrite((void *) &totNumFrames, (size_t) sizeof(int), (size_t) 1, stdout);
iWidth = (vid_stream->mb_width << 4);
fwrite((void *) &iWidth, (size_t) sizeof(int), (size_t) 1, stdout);
iHeight = (vid_stream->mb_height << 4);
fwrite((void *) &iHeight, (size_t) sizeof(int), (size_t) 1, stdout);
fwrite((void *) vid_stream->current->display, (size_t) sizeof(char),
(size_t) (3*iWidth*iHeight), stdout);
return;
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.