pike.git/ src/ modules/ Image/ encodings/ xcf.c

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2000-10-19

2000-10-19 15:17:18 by Per Hedbor <ph@opera.com>

Optimized (somewhat, 8% for my example image. :-))

Rev: src/modules/Image/encodings/xcf.c:1.29

1:   #include "global.h" - RCSID("$Id: xcf.c,v 1.28 2000/10/19 14:56:03 grubba Exp $"); + RCSID("$Id: xcf.c,v 1.29 2000/10/19 15:17:18 per Exp $");      #include "image_machine.h"   
1182:    struct neo_colortable *cmap = NULL;    int rxs, rys;    rgb_group *colortable=NULL; +  rgb_group pix = {0,0,0}; +  rgb_group apix= {255,255,255}; // avoid may use uninitialized warnings +     INT_TYPE rle, bpp, span, shrink;    unsigned int l, x=0, y=0, cx, cy;    get_all_args( "_decode_tiles", args, "%o%O%a%i%i%O%d%d%d",
1287:    tile = od;    }    - /* fprintf(stderr, "%d,%d + %d,%d <%d,%d * %d>\n", x, y, */ - /* ewidth, eheight, i->xsize, i->ysize, shrink ); */ -  +     if( (size_t)(tile.len) < (size_t)(eheight * ewidth * bpp ))    {    if( df ) free( df ); df=0;
1302:    int ix, iy=y/shrink; \    for(cy=0; cy<eheight; cy+=shrink,iy=((cy+y)/shrink)) \    { \ -  int ind=cy*ewidth, bi=(i->xsize*iy); \ +  rgb_group *ip, *ap; \ +  int ind=cy*ewidth; \    int ds = 0; \    if(iy >= i->ysize) continue; \ -  ix= x/shrink; \ +  ix = x/shrink; \ +  ip = i->img + (i->xsize*iy); \ +  if( a ) ap = a->img + (i->xsize*iy); \    for(cx=0; cx<ewidth; cx+=shrink,ind+=shrink,ix++) \    { \ -  rgb_group pix; \ +     if(ix >= i->xsize) continue      #define LOOP_EXIT() \ -  i->img[ix+bi] = pix; \ -  if(a) a->img[ix+bi] = apix; \ +  ip[ix] = pix; \    } \    }}   
1323:    span = 1;       { -  rgb_group apix; -  switch( bpp ) -  { +     case 1: /* indexed or grey */ -  apix.r = apix.g = apix.b = 255; +     if(colortable)    {    LOOP_INIT();
1345:    if(colortable)    {    LOOP_INIT(); -  pix = colortable[s[ind]]; +  pix = colortable[ s[ ind ] ]; +  if( a ) +  {    apix.r = apix.g = apix.b = s[ind+span]; -  +  ap[ix] = apix; +  }    LOOP_EXIT();    }    else    {    LOOP_INIT(); -  pix.r = pix.g = pix.b = s[ind]; +  pix.r = pix.g = pix.b = s[ind]; +  if( a ) +  {    apix.r = apix.g = apix.b = s[ind+span]; -  +  ap[ix] = apix; +  }    LOOP_EXIT();    }    break;    case 3: /* rgb */ -  apix.r = apix.g = apix.b = 255; +     LOOP_INIT();    pix.r = s[ind];    pix.g = s[ind+span];
1370:    pix.r = s[ind];    pix.g = s[ind+span];    pix.b = s[ind+span*2]; +  if(a) +  {    apix.r = apix.b = apix.g = s[ind+span*3]; -  +  ap[ix] = apix; +  }    LOOP_EXIT();    break;    } -  } +        if( df )    {
1388:    x = 0;    y += TILE_HEIGHT;    } -  /* Not exactly likely to happen, and the test consumes some CPU */ -  /* if(y>=(unsigned)(i->ysize*shrink)) */ -  /* break; */ +     }    THREADS_DISALLOW();    if(colortable)