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test/source/blender/imbuf/intern/hamx.c
Matt Ebb 04dec46c6a Color management fixes 
Now it's a bit more robust, tagging images with profiles when they're loaded, 
which then get interpreted later on by conversion functions. Just Linear RGB 
and sRGB profiles at the moment, same as before.

This commit fixes Martin's problem with EXRs and Multilayer images loading/
saving too dark, and it also makes the sequence editor work correctly with it too.

Also fixes:
[#19647] gamma correction with color management is reset when resetting Curve
[#19454] 2.5: Dither does not work when Color management is enabled
2010-01-09 00:16:35 +00:00

582 lines
24 KiB
C
Raw Blame History

/**
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
* hamx.c
*
* $Id$
*/
#include "BLI_blenlib.h"
#include "imbuf.h"
#include "imbuf_patch.h"
#include "IMB_imbuf_types.h"
#include "IMB_imbuf.h"
#include "IMB_allocimbuf.h"
#include "IMB_filter.h"
#include "IMB_ham.h"
#include "IMB_hamx.h"
#ifdef WIN32
#include <io.h>
#include "BLI_winstuff.h"
#endif
/* actually hard coded endianness */
#define GET_BIG_LONG(x) (((uchar *) (x))[0] << 24 | ((uchar *) (x))[1] << 16 | ((uchar *) (x))[2] << 8 | ((uchar *) (x))[3])
#define GET_LITTLE_LONG(x) (((uchar *) (x))[3] << 24 | ((uchar *) (x))[2] << 16 | ((uchar *) (x))[1] << 8 | ((uchar *) (x))[0])
#define SWAP_L(x) (((x << 24) & 0xff000000) | ((x << 8) & 0xff0000) | ((x >> 8) & 0xff00) | ((x >> 24) & 0xff))
#define SWAP_S(x) (((x << 8) & 0xff00) | ((x >> 8) & 0xff))
/* more endianness... should move to a separate file... */
#if defined(__sgi) || defined (__sparc) || defined (__sparc__) || defined (__PPC__) || defined (__ppc__) || defined (__hppa__) || defined (__BIG_ENDIAN__)
#define GET_ID GET_BIG_LONG
#define LITTLE_LONG SWAP_LONG
#else
#define GET_ID GET_LITTLE_LONG
#define LITTLE_LONG ENDIAN_NOP
#endif
#ifndef ABS
#define ABS(x) ((x) < 0 ? -(x) : (x))
#endif
static uchar hamx_array_char[] = {
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0x00,0x00,0xFF,0xFF, 0x00,0x00,0xFF,0xFF, 0x00,0x00,0xFF,0xFF, 0x00,0x00,0xFF,0xFF, 0x00,0x00,0xFF,0xFF, 0x00,0x00,0xFF,0xFF, 0x00,0x00,0xFF,0xFF, 0x00,0x00,0xFF,0xFF,
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0x00,0xFF,0x00,0xFF, 0x00,0xFF,0x00,0xFF, 0x00,0xFF,0x00,0xFF, 0x00,0xFF,0x00,0xFF, 0x00,0xFF,0x00,0xFF, 0x00,0xFF,0x00,0xFF, 0x00,0xFF,0x00,0xFF, 0x00,0xFF,0x00,0xFF,
0x00,0xFF,0xFF,0x00, 0x00,0xFF,0xFF,0x00, 0x00,0xFF,0xFF,0x00, 0x00,0xFF,0xFF,0x00, 0x00,0xFF,0xFF,0x00, 0x00,0xFF,0xFF,0x00, 0x00,0xFF,0xFF,0x00, 0x00,0xFF,0xFF,0x00,
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0x00,0xA0,0xB0,0x00, 0x00,0xA0,0xB0,0x30, 0x00,0xA0,0xB0,0x60, 0x00,0xA0,0xB0,0x90, 0x00,0xA0,0xB0,0xC0, 0x00,0xA0,0xB0,0xF0,
0x00,0xA0,0xD0,0x00, 0x00,0xA0,0xD0,0x30, 0x00,0xA0,0xD0,0x60, 0x00,0xA0,0xD0,0x90, 0x00,0xA0,0xD0,0xC0, 0x00,0xA0,0xD0,0xF0,
0x00,0xA0,0xF0,0x00, 0x00,0xA0,0xF0,0x30, 0x00,0xA0,0xF0,0x60, 0x00,0xA0,0xF0,0x90, 0x00,0xA0,0xF0,0xC0, 0x00,0xA0,0xF0,0xF0,
0x00,0xF0,0x00,0x00, 0x00,0xF0,0x00,0x30, 0x00,0xF0,0x00,0x60, 0x00,0xF0,0x00,0x90, 0x00,0xF0,0x00,0xC0, 0x00,0xF0,0x00,0xF0,
0x00,0xF0,0x20,0x00, 0x00,0xF0,0x20,0x30, 0x00,0xF0,0x20,0x60, 0x00,0xF0,0x20,0x90, 0x00,0xF0,0x20,0xC0, 0x00,0xF0,0x20,0xF0,
0x00,0xF0,0x40,0x00, 0x00,0xF0,0x40,0x30, 0x00,0xF0,0x40,0x60, 0x00,0xF0,0x40,0x90, 0x00,0xF0,0x40,0xC0, 0x00,0xF0,0x40,0xF0,
0x00,0xF0,0x60,0x00, 0x00,0xF0,0x60,0x30, 0x00,0xF0,0x60,0x60, 0x00,0xF0,0x60,0x90, 0x00,0xF0,0x60,0xC0, 0x00,0xF0,0x60,0xF0,
0x00,0xF0,0x90,0x00, 0x00,0xF0,0x90,0x30, 0x00,0xF0,0x90,0x60, 0x00,0xF0,0x90,0x90, 0x00,0xF0,0x90,0xC0, 0x00,0xF0,0x90,0xF0,
0x00,0xF0,0xB0,0x00, 0x00,0xF0,0xB0,0x30, 0x00,0xF0,0xB0,0x60, 0x00,0xF0,0xB0,0x90, 0x00,0xF0,0xB0,0xC0, 0x00,0xF0,0xB0,0xF0,
0x00,0xF0,0xD0,0x00, 0x00,0xF0,0xD0,0x30, 0x00,0xF0,0xD0,0x60, 0x00,0xF0,0xD0,0x90, 0x00,0xF0,0xD0,0xC0, 0x00,0xF0,0xD0,0xF0,
0x00,0xF0,0xF0,0x00, 0x00,0xF0,0xF0,0x30, 0x00,0xF0,0xF0,0x60, 0x00,0xF0,0xF0,0x90, 0x00,0xF0,0xF0,0xC0, 0x00,0xF0,0xF0,0xF0,
0x00,0x10,0x10,0x10, 0x00,0x20,0x20,0x20, 0x00,0x30,0x30,0x30, 0x00,0x40,0x40,0x40,
0x00,0x50,0x50,0x50, 0x00,0x60,0x60,0x60, 0x00,0x70,0x70,0x70, 0x00,0x80,0x80,0x80,
0x00,0x90,0x90,0x90, 0x00,0xA0,0xA0,0xA0, 0x00,0xB0,0xB0,0xB0, 0x00,0xC0,0xC0,0xC0,
0x00,0xD0,0xD0,0xD0, 0x00,0xE0,0xE0,0xE0
};
static int * hamx_array = (int *) (hamx_array_char);
static uchar cmap_hamx[] = {
0x00,0x00,0x00,0x00, 0x00,0x00,0x00,0x30, 0x00,0x00,0x00,0x60, 0x00,0x00,0x00,0x90, 0x00,0x00,0x00,0xC0, 0x00,0x00,0x00,0xF0,
0x00,0x00,0x20,0x00, 0x00,0x00,0x20,0x30, 0x00,0x00,0x20,0x60, 0x00,0x00,0x20,0x90, 0x00,0x00,0x20,0xC0, 0x00,0x00,0x20,0xF0,
0x00,0x00,0x40,0x00, 0x00,0x00,0x40,0x30, 0x00,0x00,0x40,0x60, 0x00,0x00,0x40,0x90, 0x00,0x00,0x40,0xC0, 0x00,0x00,0x40,0xF0,
0x00,0x00,0x60,0x00, 0x00,0x00,0x60,0x30, 0x00,0x00,0x60,0x60, 0x00,0x00,0x60,0x90, 0x00,0x00,0x60,0xC0, 0x00,0x00,0x60,0xF0,
0x00,0x00,0x90,0x00, 0x00,0x00,0x90,0x30, 0x00,0x00,0x90,0x60, 0x00,0x00,0x90,0x90, 0x00,0x00,0x90,0xC0, 0x00,0x00,0x90,0xF0,
0x00,0x00,0xB0,0x00, 0x00,0x00,0xB0,0x30, 0x00,0x00,0xB0,0x60, 0x00,0x00,0xB0,0x90, 0x00,0x00,0xB0,0xC0, 0x00,0x00,0xB0,0xF0,
0x00,0x00,0xD0,0x00, 0x00,0x00,0xD0,0x30, 0x00,0x00,0xD0,0x60, 0x00,0x00,0xD0,0x90, 0x00,0x00,0xD0,0xC0, 0x00,0x00,0xD0,0xF0,
0x00,0x00,0xF0,0x00, 0x00,0x00,0xF0,0x30, 0x00,0x00,0xF0,0x60, 0x00,0x00,0xF0,0x90, 0x00,0x00,0xF0,0xC0, 0x00,0x00,0xF0,0xF0,
0x00,0x50,0x00,0x00, 0x00,0x50,0x00,0x30, 0x00,0x50,0x00,0x60, 0x00,0x50,0x00,0x90, 0x00,0x50,0x00,0xC0, 0x00,0x50,0x00,0xF0,
0x00,0x50,0x20,0x00, 0x00,0x50,0x20,0x30, 0x00,0x50,0x20,0x60, 0x00,0x50,0x20,0x90, 0x00,0x50,0x20,0xC0, 0x00,0x50,0x20,0xF0,
0x00,0x50,0x40,0x00, 0x00,0x50,0x40,0x30, 0x00,0x50,0x40,0x60, 0x00,0x50,0x40,0x90, 0x00,0x50,0x40,0xC0, 0x00,0x50,0x40,0xF0,
0x00,0x50,0x60,0x00, 0x00,0x50,0x60,0x30, 0x00,0x50,0x60,0x60, 0x00,0x50,0x60,0x90, 0x00,0x50,0x60,0xC0, 0x00,0x50,0x60,0xF0,
0x00,0x50,0x90,0x00, 0x00,0x50,0x90,0x30, 0x00,0x50,0x90,0x60, 0x00,0x50,0x90,0x90, 0x00,0x50,0x90,0xC0, 0x00,0x50,0x90,0xF0,
0x00,0x50,0xB0,0x00, 0x00,0x50,0xB0,0x30, 0x00,0x50,0xB0,0x60, 0x00,0x50,0xB0,0x90, 0x00,0x50,0xB0,0xC0, 0x00,0x50,0xB0,0xF0,
0x00,0x50,0xD0,0x00, 0x00,0x50,0xD0,0x30, 0x00,0x50,0xD0,0x60, 0x00,0x50,0xD0,0x90, 0x00,0x50,0xD0,0xC0, 0x00,0x50,0xD0,0xF0,
0x00,0x50,0xF0,0x00, 0x00,0x50,0xF0,0x30, 0x00,0x50,0xF0,0x60, 0x00,0x50,0xF0,0x90, 0x00,0x50,0xF0,0xC0, 0x00,0x50,0xF0,0xF0,
0x00,0xA0,0x00,0x00, 0x00,0xA0,0x00,0x30, 0x00,0xA0,0x00,0x60, 0x00,0xA0,0x00,0x90, 0x00,0xA0,0x00,0xC0, 0x00,0xA0,0x00,0xF0,
0x00,0xA0,0x20,0x00, 0x00,0xA0,0x20,0x30, 0x00,0xA0,0x20,0x60, 0x00,0xA0,0x20,0x90, 0x00,0xA0,0x20,0xC0, 0x00,0xA0,0x20,0xF0,
0x00,0xA0,0x40,0x00, 0x00,0xA0,0x40,0x30, 0x00,0xA0,0x40,0x60, 0x00,0xA0,0x40,0x90, 0x00,0xA0,0x40,0xC0, 0x00,0xA0,0x40,0xF0,
0x00,0xA0,0x60,0x00, 0x00,0xA0,0x60,0x30, 0x00,0xA0,0x60,0x60, 0x00,0xA0,0x60,0x90, 0x00,0xA0,0x60,0xC0, 0x00,0xA0,0x60,0xF0,
0x00,0xA0,0x90,0x00, 0x00,0xA0,0x90,0x30, 0x00,0xA0,0x90,0x60, 0x00,0xA0,0x90,0x90, 0x00,0xA0,0x90,0xC0, 0x00,0xA0,0x90,0xF0,
0x00,0xA0,0xB0,0x00, 0x00,0xA0,0xB0,0x30, 0x00,0xA0,0xB0,0x60, 0x00,0xA0,0xB0,0x90, 0x00,0xA0,0xB0,0xC0, 0x00,0xA0,0xB0,0xF0,
0x00,0xA0,0xD0,0x00, 0x00,0xA0,0xD0,0x30, 0x00,0xA0,0xD0,0x60, 0x00,0xA0,0xD0,0x90, 0x00,0xA0,0xD0,0xC0, 0x00,0xA0,0xD0,0xF0,
0x00,0xA0,0xF0,0x00, 0x00,0xA0,0xF0,0x30, 0x00,0xA0,0xF0,0x60, 0x00,0xA0,0xF0,0x90, 0x00,0xA0,0xF0,0xC0, 0x00,0xA0,0xF0,0xF0,
0x00,0xF0,0x00,0x00, 0x00,0xF0,0x00,0x30, 0x00,0xF0,0x00,0x60, 0x00,0xF0,0x00,0x90, 0x00,0xF0,0x00,0xC0, 0x00,0xF0,0x00,0xF0,
0x00,0xF0,0x20,0x00, 0x00,0xF0,0x20,0x30, 0x00,0xF0,0x20,0x60, 0x00,0xF0,0x20,0x90, 0x00,0xF0,0x20,0xC0, 0x00,0xF0,0x20,0xF0,
0x00,0xF0,0x40,0x00, 0x00,0xF0,0x40,0x30, 0x00,0xF0,0x40,0x60, 0x00,0xF0,0x40,0x90, 0x00,0xF0,0x40,0xC0, 0x00,0xF0,0x40,0xF0,
0x00,0xF0,0x60,0x00, 0x00,0xF0,0x60,0x30, 0x00,0xF0,0x60,0x60, 0x00,0xF0,0x60,0x90, 0x00,0xF0,0x60,0xC0, 0x00,0xF0,0x60,0xF0,
0x00,0xF0,0x90,0x00, 0x00,0xF0,0x90,0x30, 0x00,0xF0,0x90,0x60, 0x00,0xF0,0x90,0x90, 0x00,0xF0,0x90,0xC0, 0x00,0xF0,0x90,0xF0,
0x00,0xF0,0xB0,0x00, 0x00,0xF0,0xB0,0x30, 0x00,0xF0,0xB0,0x60, 0x00,0xF0,0xB0,0x90, 0x00,0xF0,0xB0,0xC0, 0x00,0xF0,0xB0,0xF0,
0x00,0xF0,0xD0,0x00, 0x00,0xF0,0xD0,0x30, 0x00,0xF0,0xD0,0x60, 0x00,0xF0,0xD0,0x90, 0x00,0xF0,0xD0,0xC0, 0x00,0xF0,0xD0,0xF0,
0x00,0xF0,0xF0,0x00, 0x00,0xF0,0xF0,0x30, 0x00,0xF0,0xF0,0x60, 0x00,0xF0,0xF0,0x90, 0x00,0xF0,0xF0,0xC0, 0x00,0xF0,0xF0,0xF0,
0x00,0x10,0x10,0x10, 0x00,0x20,0x20,0x20, 0x00,0x30,0x30,0x30, 0x00,0x40,0x40,0x40, 0x00,0x50,0x50,0x50, 0x00,0x60,0x60,0x60,
0x00,0x70,0x70,0x70, 0x00,0x80,0x80,0x80, 0x00,0x90,0x90,0x90, 0x00,0xA0,0xA0,0xA0, 0x00,0xB0,0xB0,0xB0, 0x00,0xC0,0xC0,0xC0,
0x00,0xD0,0xD0,0xD0, 0x00,0xE0,0xE0,0xE0
};
float adat_gamma = 1.0;
float adat_distort = 1.0;
/*
*
* New version:
*
* 32 brighntesses Y 15 with direct access (black and white are specials)
* 16 colors H ue
* 7 intensities S aturation
*
* Total 3584 'different' colors. First 512 colors free.
*
*
*/
void imb_convhamx(struct ImBuf *ibuf, unsigned char *coltab, short *deltab)
{
short r,g,b,lr,lg,lb,dr,dg,db,col,fout,type,step;
int i;
uchar *rect;
/*
b = 0000 xxxx
g = 0001 xxxx
r = 0010 xxxx
cmap >= 48
*/
for (step = 0 ; step < 2 ; step ++){
rect = (uchar *) ibuf->rect;
rect += 4*step;
i = ((ibuf->x * ibuf->y) + 2 - step - 1) / 2;
lb = coltab[1];
lg = coltab[2];
lr = coltab[3];
type = col = 0;
for ( ;i>0;i--){
b = rect[2] >> 4;
g = rect[1] >> 4;
r = rect[0] >> 4;
if ((b-lb) | (g-lg) | (r-lr)){
col = ((b<<8) + (g<<4) + r) << 1;
fout = deltab[col + 1];
col = deltab[col];
type = 0;
dr = quadr[lr-r] ;
dg = quadr[lg-g] ;
db = quadr[lb-b];
if ((dr+dg)<=fout) {
fout = dr+dg ;
type = 1;
}
if ((dg+db)<=fout) {
fout = dg+db;
type = 2;
}
if ((dr+db)<=fout) {
fout = dr+db;
type = 4;
}
switch(type){
case 1:
lb = b ;
col = b;
break;
case 4:
lg = g ;
col = g+16;
break;
case 2:
lr = r ;
col = r + 32;
break;
default:
/*printf("%04x %5d %5d ", (b<<8) + (g<<4) + r, col, fout);*/
lb = coltab[col*4 + 1];
lg = coltab[col*4 + 2];
lr = coltab[col*4 + 3];
/*printf("%01x%01x%01x %01x%01x%01x\n", b, g, r, lb, lg, lr);*/
col += 48;
}
}
rect[3] = col;
rect += 8;
}
}
}
static short dec_hamx(struct ImBuf * ibuf, unsigned char *body, int cmap[])
{
int todo,i;
int j,step,col;
unsigned int *rect;
for (step = 0 ; step < 2 ; step ++){
rect = ibuf->rect;
rect += step;
todo = (ibuf->x * ibuf->y + 2 - step - 1) / 2;
col = cmap[0];
while (todo>0){
i = *body++;
if (i & 128){ /* fill */
i = 257-i;
todo -= i;
j = *(body++);
col = ((col & hamx_array[j]) | hamx_array[j + 256]);
do{
*rect = col;
rect += 2;
}while (--i);
} else{ /* copy */
i++;
todo-=i;
do{
j = *(body++);
*rect = col = ((col & hamx_array[j]) | hamx_array[j + 256]);
rect += 2;
}while (--i);
}
}
if (todo) return (0);
}
return(1);
}
struct ImBuf *imb_loadanim(int *iffmem, int flags)
{
int chunk, totlen, len, *mem, cmaplen = 0;
unsigned int *cmap = NULL;
uchar *body = 0;
struct Adat adat;
struct ImBuf *ibuf=0;
static int is_flipped = FALSE;
mem=iffmem;
if (GET_ID(mem) != FORM) return (0);
if (GET_ID(mem + 2) != ANIM) return (0);
totlen= (GET_BIG_LONG(mem + 1) + 1) & ~1;
mem += 3;
totlen -= 4;
adat.w = 0;
adat.xorig = 0;
adat.yorig = 0;
adat.gamma = adat_gamma;
adat.distort = adat_distort;
while(totlen > 0){
chunk = GET_ID(mem);
len = (GET_BIG_LONG(mem + 1) + 1) & ~1;
mem += 2;
totlen -= len+8;
switch (chunk){
case ADAT:
if (len > sizeof(struct Adat)){
memcpy(&adat,mem,sizeof(struct Adat));
} else{
memcpy(&adat,mem,len);
}
adat.w = BIG_SHORT(adat.w);
adat.h = BIG_SHORT(adat.h);
adat.type = BIG_SHORT(adat.type);
adat.xorig = BIG_SHORT(adat.xorig);
adat.yorig = BIG_SHORT(adat.yorig);
break;
case CMAP:
cmap = (unsigned int *) mem;
cmaplen = len;
break;
case BODY:
body = (uchar *) mem;
break;
}
mem = (int *)((uchar *)mem +len);
}
if (body == 0) return (0);
if (adat.w == 0) return (0);
adat_gamma = adat.gamma;
adat_distort = adat.distort;
if (flags & IB_test) ibuf=IMB_allocImBuf(adat.w, adat.h, 24, 0, 0);
else ibuf=IMB_allocImBuf(adat.w, adat.h, 24, IB_rect, 0);
if (ibuf==0) return (0);
ibuf->ftype = (Anim | adat.type);
ibuf->profile = IB_PROFILE_SRGB;
ibuf->xorig = adat.xorig;
ibuf->yorig = adat.yorig;
ibuf->flags = flags;
if (cmaplen){
ibuf->cmap = malloc(cmaplen);
memcpy(ibuf->cmap, cmap, cmaplen);
ibuf->maxcol = cmaplen >> 2;
}
if (flags & IB_test){
if (flags & IB_freem) free(iffmem);
return(ibuf);
}
switch (adat.type){
case HAMX:
if (flags & IB_rect){
if (!is_flipped) {
int i;
unsigned int * t;
t = (unsigned int *) hamx_array_char;
for (i = 0; i < sizeof(hamx_array_char) / sizeof(int) ; i++) {
t[i] = SWAP_LONG(t[i]);
}
t = (unsigned int *) cmap_hamx;
for (i = 0; i < sizeof(cmap_hamx) / sizeof(int) ; i++) {
t[i] = SWAP_LONG(t[i]);
}
is_flipped= TRUE;
}
if (dec_hamx(ibuf,body,(int*) cmap_hamx) == 0){
IMB_freeImBuf(ibuf);
ibuf = 0;
}
if (flags & IB_ttob) IMB_flipy(ibuf);
}
break;
default:
IMB_freeImBuf(ibuf);
ibuf = 0;
}
if (flags & IB_freem) free(iffmem);
return (ibuf);
}
static unsigned char *makebody_anim(int bytes,
unsigned char *buf,
unsigned char *rect)
{
register uchar last,this;
register int copy;
register uchar *rectstart,*temp;
bytes--;
rectstart = rect;
last = *rect++;
this = *rect++;
copy = last^this;
while (bytes>0){
if (copy){
do{
last = this;
this = *rect++;
if (last == this){
if (this == rect[-3]){ /* three the same? */
bytes --; /* init bytes */
break;
}
}
}while (--bytes != 0);
copy = rect-rectstart;
copy --;
if (bytes) copy -= 2;
temp = rect;
rect = rectstart;
while (copy){
last = copy;
if (copy>MAXDAT) last = MAXDAT;
copy -= last;
*buf++ = last-1;
do{
*buf++ = *rect++;
}while(--last != 0);
}
rectstart = rect;
rect = temp;
last = this;
copy = FALSE;
} else {
while (*rect++ == this){ /* seek first different byte */
if (--bytes == 0) break; /* or end of line */
}
rect --;
copy = rect-rectstart;
rectstart = rect;
bytes --;
this = *rect++;
while (copy){
if (copy>MAXRUN){
*buf++ = -(MAXRUN-1);
*buf++ = last;
copy -= MAXRUN;
} else {
*buf++ = -(copy-1);
*buf++ = last;
break;
}
}
copy=TRUE;
}
}
return (buf);
}
short imb_enc_anim(struct ImBuf *ibuf, int file)
{
int step, size, i, skip, steps = 0;
uchar *buf1, *crect, *_buf1, *_buf2, *bufend;
short ok = TRUE;
if (ibuf == 0) return (0);
if (file < 0 ) return (0);
if (ibuf->rect == 0) return(0);
/* add dither */
switch(ibuf->ftype){
case AN_hamx:
ibuf->cmap = (unsigned int *) cmap_hamx;
ibuf->mincol = 0;
ibuf->maxcol = sizeof(cmap_hamx) / 4;
imb_converttoham(ibuf);
steps = 2;
break;
}
if (steps == 0) return 0;
size = ((ibuf->x + 1)* (ibuf->y + 1)) / steps + 1024;
if ((_buf1 = malloc(size)) == 0) return(0);
if ((_buf2 = malloc(size)) == 0){
free(_buf1);
return(0);
}
skip = 4 * steps;
for (step = 0 ; step < steps ; step ++){
crect = (uchar *) ibuf->rect;
crect += 4 * step;
size = (ibuf->x * ibuf->y + steps - step - 1) / steps;
buf1 = _buf1;
if ((ibuf->ftype == AN_hamx) || (ibuf->ftype == AN_yuvx)){
crect += 3;
for (i = size ; i>0 ; i--){
*(buf1 ++) = *crect;
crect += skip;
}
} else{
for (i = size ; i>0 ; i--){
*(buf1 ++) = crect[1] + (crect[2] >> 2) + (crect[3] >> 5);
crect += skip;
}
}
bufend = makebody_anim(size,_buf2,_buf1);
if (bufend == 0){
ok = FALSE;
break;
}
size = bufend - _buf2;
if (write(file, _buf2, size) != size){
ok = FALSE;
break;
}
}
free(_buf1);
free(_buf2);
return (ok);
}
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