X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=libraries%2Flibart_lgpl-2.3.7%2Fart_rgb_rgba_affine.c;fp=libraries%2Flibart_lgpl-2.3.7%2Fart_rgb_rgba_affine.c;h=0000000000000000000000000000000000000000;hp=78c27fe9456bdc306e974328b8131e18412ad13f;hb=5d405fd05bbfbbd94a7c6cbd876e6634025c1c25;hpb=bab0189ee9d56aca8bea909275317ab4e0be09ee

diff --git a/libraries/libart_lgpl-2.3.7/art_rgb_rgba_affine.c b/libraries/libart_lgpl-2.3.7/art_rgb_rgba_affine.c
deleted file mode 100644
index 78c27fe..0000000
--- a/libraries/libart_lgpl-2.3.7/art_rgb_rgba_affine.c
+++ /dev/null
@@ -1,140 +0,0 @@
-/* Libart_LGPL - library of basic graphic primitives
- * Copyright (C) 1998 Raph Levien
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#include <math.h>
-#include "art_misc.h"
-#include "art_point.h"
-#include "art_affine.h"
-#include "art_rgb_affine_private.h"
-#include "art_rgb_rgba_affine.h"
-
-/* This module handles compositing of affine-transformed rgba images
-   over rgb pixel buffers. */
-
-/* Composite the source image over the destination image, applying the
-   affine transform. */
-
-/**
- * art_rgb_rgba_affine: Affine transform source RGBA image and composite.
- * @dst: Destination image RGB buffer.
- * @x0: Left coordinate of destination rectangle.
- * @y0: Top coordinate of destination rectangle.
- * @x1: Right coordinate of destination rectangle.
- * @y1: Bottom coordinate of destination rectangle.
- * @dst_rowstride: Rowstride of @dst buffer.
- * @src: Source image RGBA buffer.
- * @src_width: Width of source image.
- * @src_height: Height of source image.
- * @src_rowstride: Rowstride of @src buffer.
- * @affine: Affine transform.
- * @level: Filter level.
- * @alphagamma: #ArtAlphaGamma for gamma-correcting the compositing.
- *
- * Affine transform the source image stored in @src, compositing over
- * the area of destination image @dst specified by the rectangle
- * (@x0, @y0) - (@x1, @y1). As usual in libart, the left and top edges
- * of this rectangle are included, and the right and bottom edges are
- * excluded.
- *
- * The @alphagamma parameter specifies that the alpha compositing be
- * done in a gamma-corrected color space. In the current
- * implementation, it is ignored.
- *
- * The @level parameter specifies the speed/quality tradeoff of the
- * image interpolation. Currently, only ART_FILTER_NEAREST is
- * implemented.
- **/
-void
-art_rgb_rgba_affine (art_u8 *dst,
-		     int x0, int y0, int x1, int y1, int dst_rowstride,
-		     const art_u8 *src,
-		     int src_width, int src_height, int src_rowstride,
-		     const double affine[6],
-		     ArtFilterLevel level,
-		     ArtAlphaGamma *alphagamma)
-{
-  /* Note: this is a slow implementation, and is missing all filter
-     levels other than NEAREST. It is here for clarity of presentation
-     and to establish the interface. */
-  int x, y;
-  double inv[6];
-  art_u8 *dst_p, *dst_linestart;
-  const art_u8 *src_p;
-  ArtPoint pt, src_pt;
-  int src_x, src_y;
-  int alpha;
-  art_u8 bg_r, bg_g, bg_b;
-  art_u8 fg_r, fg_g, fg_b;
-  int tmp;
-  int run_x0, run_x1;
-
-  dst_linestart = dst;
-  art_affine_invert (inv, affine);
-  for (y = y0; y < y1; y++)
-    {
-      pt.y = y + 0.5;
-      run_x0 = x0;
-      run_x1 = x1;
-      art_rgb_affine_run (&run_x0, &run_x1, y, src_width, src_height,
-			  inv);
-      dst_p = dst_linestart + (run_x0 - x0) * 3;
-      for (x = run_x0; x < run_x1; x++)
-	{
-	  pt.x = x + 0.5;
-	  art_affine_point (&src_pt, &pt, inv);
-	  src_x = floor (src_pt.x);
-	  src_y = floor (src_pt.y);
-	  src_p = src + (src_y * src_rowstride) + src_x * 4;
-	  if (src_x >= 0 && src_x < src_width &&
-	      src_y >= 0 && src_y < src_height)
-	    {
-
-	  alpha = src_p[3];
-	  if (alpha)
-	    {
-	      if (alpha == 255)
-		{
-		  dst_p[0] = src_p[0];
-		  dst_p[1] = src_p[1];
-		  dst_p[2] = src_p[2];
-		}
-	      else
-		{
-		  bg_r = dst_p[0];
-		  bg_g = dst_p[1];
-		  bg_b = dst_p[2];
-		  
-		  tmp = (src_p[0] - bg_r) * alpha;
-		  fg_r = bg_r + ((tmp + (tmp >> 8) + 0x80) >> 8);
-		  tmp = (src_p[1] - bg_g) * alpha;
-		  fg_g = bg_g + ((tmp + (tmp >> 8) + 0x80) >> 8);
-		  tmp = (src_p[2] - bg_b) * alpha;
-		  fg_b = bg_b + ((tmp + (tmp >> 8) + 0x80) >> 8);
-		  
-		  dst_p[0] = fg_r;
-		  dst_p[1] = fg_g;
-		  dst_p[2] = fg_b;
-		}
-	    }
-	    } else { dst_p[0] = 255; dst_p[1] = 0; dst_p[2] = 0; }
-	  dst_p += 3;
-	}
-      dst_linestart += dst_rowstride;
-    }
-}