X-Git-Url: https://git.octo.it/?a=blobdiff_plain;ds=sidebyside;f=libraries%2Flibart_lgpl-2.3.7%2Fart_rgb_bitmap_affine.c;fp=libraries%2Flibart_lgpl-2.3.7%2Fart_rgb_bitmap_affine.c;h=0000000000000000000000000000000000000000;hb=5d405fd05bbfbbd94a7c6cbd876e6634025c1c25;hp=57e0655419f7df54b4b8bee930ed8e15918a507c;hpb=bab0189ee9d56aca8bea909275317ab4e0be09ee;p=rrdtool.git diff --git a/libraries/libart_lgpl-2.3.7/art_rgb_bitmap_affine.c b/libraries/libart_lgpl-2.3.7/art_rgb_bitmap_affine.c deleted file mode 100644 index 57e0655..0000000 --- a/libraries/libart_lgpl-2.3.7/art_rgb_bitmap_affine.c +++ /dev/null @@ -1,196 +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 -#include "art_misc.h" -#include "art_point.h" -#include "art_affine.h" -#include "art_rgb_affine_private.h" -#include "art_rgb_bitmap_affine.h" - -/* This module handles compositing of affine-transformed bitmap images - over rgb pixel buffers. */ - -/* Composite the source image over the destination image, applying the - affine transform. Foreground color is given and assumed to be - opaque, background color is assumed to be fully transparent. */ - -static void -art_rgb_bitmap_affine_opaque (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, - art_u32 rgb, - 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; - art_u8 r, g, b; - int run_x0, run_x1; - - r = rgb >> 16; - g = (rgb >> 8) & 0xff; - b = rgb & 0xff; - 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 >> 3); - if (*src_p & (128 >> (src_x & 7))) - { - dst_p[0] = r; - dst_p[1] = g; - dst_p[2] = b; - } - dst_p += 3; - } - dst_linestart += dst_rowstride; - } -} -/* Composite the source image over the destination image, applying the - affine transform. Foreground color is given, background color is - assumed to be fully transparent. */ - -/** - * art_rgb_bitmap_affine: Affine transform source bitmap 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 bitmap buffer. - * @src_width: Width of source image. - * @src_height: Height of source image. - * @src_rowstride: Rowstride of @src buffer. - * @rgba: RGBA foreground color, in 0xRRGGBBAA. - * @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). - * - * The source bitmap stored with MSB as the leftmost pixel. Source 1 - * bits correspond to the semitransparent color @rgba, while source 0 - * bits are transparent. - * - * See art_rgb_affine() for a description of additional parameters. - **/ -void -art_rgb_bitmap_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, - art_u32 rgba, - 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; - art_u8 r, g, b; - int run_x0, run_x1; - - alpha = rgba & 0xff; - if (alpha == 0xff) - { - art_rgb_bitmap_affine_opaque (dst, x0, y0, x1, y1, dst_rowstride, - src, - src_width, src_height, src_rowstride, - rgba >> 8, - affine, - level, - alphagamma); - return; - } - /* alpha = (65536 * alpha) / 255; */ - alpha = (alpha << 8) + alpha + (alpha >> 7); - r = rgba >> 24; - g = (rgba >> 16) & 0xff; - b = (rgba >> 8) & 0xff; - 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 >> 3); - if (*src_p & (128 >> (src_x & 7))) - { - bg_r = dst_p[0]; - bg_g = dst_p[1]; - bg_b = dst_p[2]; - - fg_r = bg_r + (((r - bg_r) * alpha + 0x8000) >> 16); - fg_g = bg_g + (((g - bg_g) * alpha + 0x8000) >> 16); - fg_b = bg_b + (((b - bg_b) * alpha + 0x8000) >> 16); - - dst_p[0] = fg_r; - dst_p[1] = fg_g; - dst_p[2] = fg_b; - } - dst_p += 3; - } - dst_linestart += dst_rowstride; - } -}