be6bde730d
* BUG: Correctly deals with unknown components in the project property dialog. [INTERPRETER] * NEW: Error backtrace is now always printed. * OPT: Some optimizations in mathematical routines. [GB.IMAGE] * NEW: Image.FillRect() is a new method that fills a rectangle with a specified color. git-svn-id: svn://localhost/gambas/trunk@3007 867c0c6c-44f3-4631-809d-bfa615b0a4ec
1015 lines
22 KiB
C
1015 lines
22 KiB
C
/***************************************************************************
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image.c
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(c) 2000-2009 Benoît Minisini <gambas@users.sourceforge.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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***************************************************************************/
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#define __IMAGE_C
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#include "c_color.h"
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#include "image.h"
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typedef
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struct { unsigned char d[3]; } PACKED uint24;
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//#define DEBUG_CONVERT
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static int _default_format = GB_IMAGE_RGBA;
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/*static inline unsigned char *GET_END_POINTER(GB_IMG *image)
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{
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return &image->data[IMAGE_size(image)];
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}*/
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#define GET_END_POINTER(_img) (&(_img)->data[IMAGE_size(_img)])
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#define PREMUL(_x) \
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({ \
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uint x = (_x); \
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uint a = x >> 24; \
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\
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if (a == 0) \
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x = 0; \
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else if (a != 0xFF) \
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{ \
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uint t = (x & 0xFF00FF) * a; \
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t = (t + ((t >> 8) & 0xFF00FF) + 0x800080) >> 8; \
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t &= 0xff00ff; \
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\
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x = ((x >> 8) & 0xff) * a; \
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x = (x + ((x >> 8) & 0xFF) + 0x80); \
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x &= 0xFF00; \
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x |= t | (a << 24); \
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} \
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x; \
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})
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#define INV_PREMUL(__p) \
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({ \
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uint _p = (__p); \
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if (ALPHA(_p) == 0) \
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_p = 0; \
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else if (ALPHA(_p) != 0xFF) \
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_p = ((ALPHA(_p) << 24) \
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| (((255*RED(_p))/ ALPHA(_p)) << 16) \
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| (((255*GREEN(_p)) / ALPHA(_p)) << 8) \
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| ((255*BLUE(_p)) / ALPHA(_p))); \
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_p; \
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})
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#define SWAP(__p) \
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({ \
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uint _p = (__p); \
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RGBA(ALPHA(_p), BLUE(_p), GREEN(_p), RED(_p)); \
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})
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#define SWAP_RED_BLUE(__p) \
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({ \
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uint _p = (__p); \
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RGBA(BLUE(_p), GREEN(_p), RED(_p), ALPHA(_p)); \
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})
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static uint from_GB_COLOR(GB_COLOR col, int format)
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{
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col ^= 0xFF000000;
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if (GB_IMAGE_FMT_IS_PREMULTIPLIED(format))
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col = PREMUL(col);
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if (GB_IMAGE_FMT_IS_SWAPPED(format))
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col = SWAP(col);
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if (GB_IMAGE_FMT_IS_RGBA(format))
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col = SWAP_RED_BLUE(col);
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return col;
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}
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static GB_COLOR to_GB_COLOR(uint col, int format)
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{
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if (GB_IMAGE_FMT_IS_RGBA(format))
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col = SWAP_RED_BLUE(col);
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if (GB_IMAGE_FMT_IS_SWAPPED(format))
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col = SWAP(col);
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if (GB_IMAGE_FMT_IS_PREMULTIPLIED(format))
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col = INV_PREMUL(col);
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return col ^ 0xFF000000;
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}
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static inline uint BGRA_to_format(uint col, int format)
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{
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if (GB_IMAGE_FMT_IS_PREMULTIPLIED(format))
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col = PREMUL(col);
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if (GB_IMAGE_FMT_IS_SWAPPED(format))
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col = SWAP(col);
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//if (GB_IMAGE_FMT_IS_RGBA(format))
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// col = SWAP_RED_BLUE(col);
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return col;
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}
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static inline uint BGRA_from_format(uint col, int format)
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{
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//if (GB_IMAGE_FMT_IS_RGBA(format))
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// col = SWAP_RED_BLUE(col);
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if (GB_IMAGE_FMT_IS_SWAPPED(format))
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col = SWAP(col);
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if (GB_IMAGE_FMT_IS_PREMULTIPLIED(format))
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col = INV_PREMUL(col);
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return col;
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}
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static inline bool is_valid(GB_IMG *img, int x, int y)
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{
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return !(x >= img->width || y >= img->height || x < 0 || y < 0);
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}
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static void free_image(GB_IMG *img, void *image)
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{
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//fprintf(stderr, "free_image: %p %p\n", img, img->data);
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GB.Free(POINTER(&img->data));
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}
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static GB_IMG_OWNER _image_owner = {
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"gb.image",
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0,
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free_image,
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free_image,
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NULL
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};
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// Only converts to the following formats:
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// - GB_IMAGE_BGRA
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// - GB_IMAGE_BGRX
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// - GB_IMAGE_RGBA
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// - GB_IMAGE_RGBX
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static void convert_image(uchar *dst, int dst_format, uchar *src, int src_format, int w, int h)
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{
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unsigned char *s = src;
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unsigned char *d = dst;
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int len;
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unsigned char *dm;
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uint *p, *pm;
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bool psrc, pdst;
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#ifdef DEBUG_CONVERT
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fprintf(stderr, "convert_image: src_format = %d dst_format = %d\n", src_format, dst_format);
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#endif
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len = w * h * sizeof(uint);
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dm = &d[len];
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psrc = GB_IMAGE_FMT_IS_PREMULTIPLIED(src_format);
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src_format = GB_IMAGE_FMT_CLEAR_PREMULTIPLIED(src_format);
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pdst = GB_IMAGE_FMT_IS_PREMULTIPLIED(dst_format);
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dst_format = GB_IMAGE_FMT_CLEAR_PREMULTIPLIED(dst_format);
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#ifdef DEBUG_CONVERT
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fprintf(stderr, "convert_image: after: src_format = %d dst_format = %d\n", src_format, dst_format);
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#endif
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if (dst_format == GB_IMAGE_BGRA || dst_format == GB_IMAGE_BGRX)
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{
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switch (src_format)
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{
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case GB_IMAGE_BGRA: case GB_IMAGE_BGRX:
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goto __0123;
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case GB_IMAGE_ARGB: case GB_IMAGE_XRGB:
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goto __3210;
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case GB_IMAGE_RGBA: case GB_IMAGE_RGBX:
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goto __2103;
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case GB_IMAGE_ABGR: case GB_IMAGE_XBGR:
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goto __1230;
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case GB_IMAGE_BGR:
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goto __012X;
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case GB_IMAGE_RGB:
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goto __210X;
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}
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}
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else if (dst_format == GB_IMAGE_RGBA || dst_format == GB_IMAGE_RGBX)
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{
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switch (src_format)
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{
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case GB_IMAGE_RGBA: case GB_IMAGE_RGBX:
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goto __0123;
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case GB_IMAGE_ABGR: case GB_IMAGE_XBGR:
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goto __3210;
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case GB_IMAGE_BGRA: case GB_IMAGE_BGRX:
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goto __2103;
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case GB_IMAGE_ARGB: case GB_IMAGE_XRGB:
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goto __1230;
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case GB_IMAGE_RGB:
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goto __012X;
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case GB_IMAGE_BGR:
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goto __210X;
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}
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}
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__0123:
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#ifdef DEBUG_CONVERT
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fprintf(stderr, "convert_image: 0123\n");
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#endif
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memcpy(dst, src, len);
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goto __PREMULTIPLIED;
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__3210:
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#ifdef DEBUG_CONVERT
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fprintf(stderr, "convert_image: 3210\n");
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#endif
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while (d != dm)
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{
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d[0] = s[3];
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d[1] = s[2];
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d[2] = s[1];
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d[3] = s[0];
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s += 4;
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d += 4;
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}
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goto __PREMULTIPLIED;
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__2103:
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#ifdef DEBUG_CONVERT
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fprintf(stderr, "convert_image: 2103\n");
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#endif
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while (d != dm)
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{
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d[0] = s[2];
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d[1] = s[1];
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d[2] = s[0];
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d[3] = s[3];
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s += 4;
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d += 4;
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}
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goto __PREMULTIPLIED;
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__1230:
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#ifdef DEBUG_CONVERT
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fprintf(stderr, "convert_image: 1230\n");
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#endif
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while (d != dm)
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{
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d[0] = s[1];
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d[1] = s[2];
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d[2] = s[3];
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d[3] = s[0];
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s += 4;
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d += 4;
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}
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goto __PREMULTIPLIED;
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__012X:
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#ifdef DEBUG_CONVERT
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fprintf(stderr, "convert_image: 012X\n");
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#endif
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while (d != dm)
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{
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d[0] = s[0];
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d[1] = s[1];
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d[2] = s[2];
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d[3] = 0xFF;
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s += 3;
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d += 4;
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}
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return;
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__210X:
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#ifdef DEBUG_CONVERT
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fprintf(stderr, "convert_image: 210X\n");
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#endif
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while (d != dm)
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{
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d[0] = s[2];
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d[1] = s[1];
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d[2] = s[0];
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d[3] = 0xFF;
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s += 3;
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d += 4;
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}
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return;
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__PREMULTIPLIED:
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if (psrc == pdst)
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return;
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p = (uint *)dst;
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pm = (uint *)dm;
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if (psrc)
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{
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#ifdef DEBUG_CONVERT
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fprintf(stderr, "convert_image: premultiplied -> normal\n");
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#endif
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// convert premultiplied to normal
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while (p != pm)
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{
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*p = INV_PREMUL(*p);
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p++;
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}
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}
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else
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{
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#ifdef DEBUG_CONVERT
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fprintf(stderr, "convert_image: normal -> premultiplied\n");
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#endif
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// convert normal to premultiplied
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while (p != pm)
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{
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*p = PREMUL(*p);
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p++;
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}
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}
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}
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int IMAGE_size(GB_IMG *img)
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{
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return img->width * img->height * (GB_IMAGE_FMT_IS_24_BITS(img->format) ? 3 : 4);
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}
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void IMAGE_create(GB_IMG *img, int width, int height, int format)
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{
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GB_BASE save = img->ob;
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CLEAR(img);
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img->ob = save;
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img->owner = &_image_owner;
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if (width <= 0 || height <= 0)
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return;
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img->width = width;
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img->height = height;
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img->format = format;
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GB.Alloc(POINTER(&img->data), IMAGE_size(img));
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img->owner_handle = img->data;
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}
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void IMAGE_create_with_data(GB_IMG *img, int width, int height, int format, unsigned char *data)
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{
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IMAGE_create(img, width, height, format);
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if (data)
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memcpy(img->data, data, IMAGE_size(img));
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}
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void IMAGE_convert(GB_IMG *img, int dst_format)
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{
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uchar *data;
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int src_format = img->format;
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if (src_format == dst_format)
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return;
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//IMAGE_create(&tmp, img->width, img->height, format);
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img->format = dst_format;
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GB.Alloc(POINTER(&data), IMAGE_size(img));
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convert_image(data, dst_format, img->data, src_format, img->width, img->height);
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//GB.Free(POINTER(&img->data));
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IMAGE_take(img, &_image_owner, data, img->width, img->height, data);
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}
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// Check if a temporary handle is needed, and create it if needed by calling the owner "temp" function
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void *IMAGE_check(GB_IMG *img, GB_IMG_OWNER *temp_owner)
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{
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if (!img)
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return NULL;
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// If we already have the temporary handle, then do nothing
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if (img->temp_owner == temp_owner)
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return img->temp_handle;
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// If somebody else has a temporary handle
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if (img->temp_owner)
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{
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// release it only if it is not the owner
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if (img->temp_owner != img->owner && img->temp_owner->release)
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(*img->temp_owner->release)(img, img->temp_handle);
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img->temp_handle = 0;
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}
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// Get the temporary handle
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if (temp_owner)
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{
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// If we are the owner, we must use our owner handle as temporary handle
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if (img->owner == temp_owner)
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img->temp_handle = img->owner_handle;
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// If we are not the owner, then we will have to create the temporary handle ourself
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else
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{
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// Conversion can make gb.image the new owner and temporary owner
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IMAGE_convert(img, temp_owner->format);
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img->temp_handle = (*temp_owner->temp)(img);
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}
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}
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// Become the temporary owner
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img->temp_owner = temp_owner;
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return img->temp_handle;
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}
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// Take ownership of the image
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void IMAGE_take(GB_IMG *img, GB_IMG_OWNER *owner, void *owner_handle, int width, int height, unsigned char *data)
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{
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if (!img)
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return;
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// If we are already the owner with the same handle, then do nothing
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if (img->owner == owner && img->owner_handle == owner_handle)
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return;
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// Release the old owner
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//fprintf(stderr, "releasing image %p owned by %s\n", img, img->owner->name);
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(*img->owner->free)(img, img->owner_handle);
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// If we have the temporary handle too, then clean it as it is necessarily the same
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if (img->temp_owner == img->owner)
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{
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img->temp_owner = NULL;
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img->temp_handle = 0;
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}
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// Become the owner
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img->owner = owner;
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img->owner_handle = owner_handle;
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|
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// As we are now the owner, then we must have the temporary handle too
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IMAGE_check(img, NULL);
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img->temp_owner = owner;
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img->temp_handle = owner_handle;
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|
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// Initialize the data
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img->width = width;
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img->height = height;
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img->data = data;
|
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if (owner && owner->format)
|
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img->format = owner->format;
|
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}
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|
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void IMAGE_delete(GB_IMG *img)
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{
|
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IMAGE_take(img, NULL, NULL, 0, 0, NULL);
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img->format = 0;
|
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}
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|
|
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#define GET_POINTER(_img, _p, _pm) \
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uint *_p = (uint *)(_img)->data; \
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uint *_pm = (uint *)GET_END_POINTER(_img);
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|
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void IMAGE_fill(GB_IMG *img, GB_COLOR col)
|
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{
|
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GET_POINTER(img, p, pm);
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|
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col = from_GB_COLOR(col, img->format);
|
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while (p != pm)
|
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*p++ = col;
|
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}
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|
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// GB_IMAGE_RGB[APX] only
|
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void IMAGE_make_gray(GB_IMG *img)
|
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{
|
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GET_POINTER(img, p, pm);
|
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uint col;
|
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uchar g;
|
|
|
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while (p != pm)
|
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{
|
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col = BGRA_from_format(*p, img->format);
|
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g = (((RED(col) + BLUE(col)) >> 1) + GREEN(col)) >> 1;
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|
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*p++ = BGRA_to_format(RGBA(g, g, g, ALPHA(col)), img->format);
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}
|
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}
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|
|
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GB_COLOR IMAGE_get_pixel(GB_IMG *img, int x, int y)
|
|
{
|
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uint col;
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|
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if (!is_valid(img, x, y))
|
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return (-1);
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|
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col = ((uint *)img->data)[y * img->width + x];
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return to_GB_COLOR(col, img->format);
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}
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|
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void IMAGE_set_pixel(GB_IMG *img, int x, int y, GB_COLOR col)
|
|
{
|
|
if (!is_valid(img, x, y))
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return;
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|
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((uint *)img->data)[y * img->width + x] = from_GB_COLOR(col, img->format);
|
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}
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|
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void IMAGE_fill_rect(GB_IMG *img, int x, int y, int w, int h, GB_COLOR col)
|
|
{
|
|
uint *p;
|
|
int i;
|
|
uint c;
|
|
|
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if (x >= img->width || y >= img->height) return;
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|
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if (x < 0) { w += x; x = 0; }
|
|
if (y < 0) { h += y; y = 0; }
|
|
if ((x + w) > img->width) { w = img->width - x; }
|
|
if ((y + h) > img->height) { h = img->height - y; }
|
|
|
|
if (w <= 0 || h <= 0) return;
|
|
|
|
c = from_GB_COLOR(col, img->format);
|
|
p = &((uint *)img->data)[y * img->width + x];
|
|
|
|
while (h)
|
|
{
|
|
for(i = w; i; i--)
|
|
*p++ = c;
|
|
h--;
|
|
p += img->width - w;
|
|
}
|
|
}
|
|
|
|
void IMAGE_replace(GB_IMG *img, GB_COLOR src, GB_COLOR dst, bool noteq)
|
|
{
|
|
GET_POINTER(img, p, pm);
|
|
|
|
src = from_GB_COLOR(src, img->format);
|
|
dst = from_GB_COLOR(dst, img->format);
|
|
|
|
if (noteq)
|
|
{
|
|
while (p != pm)
|
|
{
|
|
if (*p != src)
|
|
*p = dst;
|
|
p++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
while (p != pm)
|
|
{
|
|
if (*p == src)
|
|
*p = dst;
|
|
p++;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Comes from the GIMP
|
|
|
|
typedef
|
|
struct {
|
|
float r;
|
|
float b;
|
|
float g;
|
|
float a;
|
|
}
|
|
FLOAT_RGB;
|
|
|
|
static void color_to_alpha(FLOAT_RGB *src, const FLOAT_RGB *color)
|
|
{
|
|
FLOAT_RGB alpha;
|
|
|
|
alpha.a = src->a;
|
|
|
|
if (color->r < 0.0001)
|
|
alpha.r = src->r;
|
|
else if (src->r > color->r)
|
|
alpha.r = (src->r - color->r) / (1.0 - color->r);
|
|
else if (src->r < color->r)
|
|
alpha.r = (color->r - src->r) / color->r;
|
|
else alpha.r = 0.0;
|
|
|
|
if (color->g < 0.0001)
|
|
alpha.g = src->g;
|
|
else if (src->g > color->g)
|
|
alpha.g = (src->g - color->g) / (1.0 - color->g);
|
|
else if (src->g < color->g)
|
|
alpha.g = (color->g - src->g) / (color->g);
|
|
else alpha.g = 0.0;
|
|
|
|
if (color->b < 0.0001)
|
|
alpha.b = src->b;
|
|
else if (src->b > color->b)
|
|
alpha.b = (src->b - color->b) / (1.0 - color->b);
|
|
else if (src->b < color->b)
|
|
alpha.b = (color->b - src->b) / (color->b);
|
|
else alpha.b = 0.0;
|
|
|
|
if (alpha.r > alpha.g)
|
|
{
|
|
if (alpha.r > alpha.b)
|
|
{
|
|
src->a = alpha.r;
|
|
}
|
|
else
|
|
{
|
|
src->a = alpha.b;
|
|
}
|
|
}
|
|
else if (alpha.g > alpha.b)
|
|
{
|
|
src->a = alpha.g;
|
|
}
|
|
else
|
|
{
|
|
src->a = alpha.b;
|
|
}
|
|
|
|
if (src->a < 0.0001)
|
|
return;
|
|
|
|
src->r = (src->r - color->r) / src->a + color->r;
|
|
src->g = (src->g - color->g) / src->a + color->g;
|
|
src->b = (src->b - color->b) / src->a + color->b;
|
|
|
|
src->a *= alpha.a;
|
|
}
|
|
|
|
void IMAGE_make_transparent(GB_IMG *img, GB_COLOR col)
|
|
{
|
|
uint *p = (uint *)img->data;
|
|
uint *pm = (uint *)(img->data + IMAGE_size(img));
|
|
uint color;
|
|
FLOAT_RGB rgb_color;
|
|
FLOAT_RGB rgb_src;
|
|
|
|
//fprintf(stderr, "IMAGE_make_transparent: %d x %d / %d\n", img->width, img->height, img->format);
|
|
|
|
color = from_GB_COLOR(col, img->format);
|
|
rgb_color.b = BLUE(color) / 255.0;
|
|
rgb_color.g = GREEN(color) / 255.0;
|
|
rgb_color.r = RED(color) / 255.0;
|
|
rgb_color.a = 1.0;
|
|
|
|
while (p != pm)
|
|
{
|
|
color = BGRA_from_format(*p, img->format);
|
|
rgb_src.b = BLUE(color) / 255.0;
|
|
rgb_src.g = GREEN(color) / 255.0;
|
|
rgb_src.r = RED(color) / 255.0;
|
|
rgb_src.a = ALPHA(color) / 255.0;
|
|
|
|
color_to_alpha(&rgb_src, &rgb_color);
|
|
|
|
color = RGBA(
|
|
(unsigned char)(255.0 * rgb_src.r + 0.5),
|
|
(unsigned char)(255.0 * rgb_src.g + 0.5),
|
|
(unsigned char)(255.0 * rgb_src.b + 0.5),
|
|
(unsigned char)(255.0 * rgb_src.a + 0.5)
|
|
);
|
|
|
|
*p = BGRA_to_format(color, img->format);
|
|
//fprintf(stderr, "[%d] %08X\n", p - (uint *)img->data, *p);
|
|
p++;
|
|
}
|
|
|
|
//fprintf(stderr, "IMAGE_make_transparent: ** DONE **\n");
|
|
}
|
|
|
|
|
|
void IMAGE_set_default_format(int format)
|
|
{
|
|
_default_format = GB_IMAGE_FMT_CLEAR_PREMULTIPLIED(format);
|
|
}
|
|
|
|
int IMAGE_get_default_format()
|
|
{
|
|
return _default_format;
|
|
}
|
|
|
|
void IMAGE_bitblt(GB_IMG *dst, int dx, int dy, GB_IMG *src, int sx, int sy, int sw, int sh)
|
|
{
|
|
if (dst->format != src->format)
|
|
return;
|
|
|
|
// Parameter correction
|
|
|
|
if ( sw < 0 ) sw = src->width;
|
|
if ( sh < 0 ) sh = src->height;
|
|
if ( sx < 0 ) { dx -= sx; sw += sx; sx = 0; }
|
|
if ( sy < 0 ) { dy -= sy; sh += sy; sy = 0; }
|
|
if ( dx < 0 ) { sx -= dx; sw += dx; dx = 0; }
|
|
if ( dy < 0 ) { sy -= dy; sh += dy; dy = 0; }
|
|
if ( sx + sw > src->width ) sw = src->width - sx;
|
|
if ( sy + sh > src->height ) sh = src->height - sy;
|
|
if ( dx + sw > dst->width ) sw = dst->width - dx;
|
|
if ( dy + sh > dst->height ) sh = dst->height - dy;
|
|
if ( sw <= 0 || sh <= 0 ) return; // Nothing left to copy
|
|
|
|
if (GB_IMAGE_FMT_IS_32_BITS(src->format))
|
|
{
|
|
uint *d = (uint *)dst->data + dy * dst->width + dx;
|
|
uint *s = (uint *)src->data + sy * src->width + sx;
|
|
|
|
if (sw < 64)
|
|
{
|
|
// Trust ourselves
|
|
const int dd = dst->width - sw;
|
|
const int ds = src->width - sw;
|
|
int t;
|
|
while (sh--)
|
|
{
|
|
for (t = sw; t--;)
|
|
*d++ = *s++;
|
|
d += dd;
|
|
s += ds;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Trust libc
|
|
const int dd = dst->width;
|
|
const int ds = src->width;
|
|
const int b = sw * sizeof(uint);
|
|
while (sh--)
|
|
{
|
|
memcpy(d, s, b);
|
|
d += dd;
|
|
s += ds;
|
|
}
|
|
}
|
|
}
|
|
else // 24 bits
|
|
{
|
|
char *d = (char *)dst->data + (dy * dst->width + dx) * 3;
|
|
char *s = (char *)src->data + (sy * src->width + sx) * 3;
|
|
const int dd = dst->width * 3;
|
|
const int ds = src->width * 3;
|
|
const int b = sw * 3;
|
|
|
|
while (sh--)
|
|
{
|
|
memcpy(d, s, b);
|
|
d += dd;
|
|
s += ds;
|
|
}
|
|
}
|
|
}
|
|
|
|
void IMAGE_compose(GB_IMG *dst, int dx, int dy, GB_IMG *src, int sx, int sy, int sw, int sh)
|
|
{
|
|
if (dst->format != src->format)
|
|
return;
|
|
|
|
// Parameter correction
|
|
|
|
if ( sw < 0 ) sw = src->width;
|
|
if ( sh < 0 ) sh = src->height;
|
|
if ( sx < 0 ) { dx -= sx; sw += sx; sx = 0; }
|
|
if ( sy < 0 ) { dy -= sy; sh += sy; sy = 0; }
|
|
if ( dx < 0 ) { sx -= dx; sw += dx; dx = 0; }
|
|
if ( dy < 0 ) { sy -= dy; sh += dy; dy = 0; }
|
|
if ( sx + sw > src->width ) sw = src->width - sx;
|
|
if ( sy + sh > src->height ) sh = src->height - sy;
|
|
if ( dx + sw > dst->width ) sw = dst->width - dx;
|
|
if ( dy + sh > dst->height ) sh = dst->height - dy;
|
|
if ( sw <= 0 || sh <= 0 ) return;
|
|
|
|
/*if ( src->hasAlphaBuffer() ) {
|
|
QRgb* d = (QRgb*)dst->scanLine(dy) + dx;
|
|
QRgb* s = (QRgb*)src->scanLine(sy) + sx;
|
|
const int dd = dst->width() - sw;
|
|
const int ds = src->width() - sw;
|
|
while ( sh-- ) {
|
|
for ( int t=sw; t--; ) {
|
|
unsigned char a = qAlpha(*s);
|
|
if ( a == 255 )
|
|
*d++ = *s++;
|
|
else if ( a == 0 )
|
|
++d,++s; // nothing
|
|
else {
|
|
unsigned char r = ((qRed(*s)-qRed(*d)) * a) / 256 + qRed(*d);
|
|
unsigned char g = ((qGreen(*s)-qGreen(*d)) * a) / 256 + qGreen(*d);
|
|
unsigned char b = ((qBlue(*s)-qBlue(*d)) * a) / 256 + qBlue(*d);
|
|
a = QMAX(qAlpha(*d),a); // alternatives...
|
|
*d++ = qRgba(r,g,b,a);
|
|
++s;
|
|
}
|
|
}
|
|
d += dd;
|
|
s += ds;
|
|
}
|
|
} else {*/
|
|
|
|
switch(src->format)
|
|
{
|
|
case GB_IMAGE_RGBA: case GB_IMAGE_BGRA:
|
|
{
|
|
uint *d = (uint *)dst->data + dy * dst->width + dx;
|
|
uint *s = (uint *)src->data + sy * src->width + sx;
|
|
|
|
const int dd = dst->width - sw;
|
|
const int ds = src->width - sw;
|
|
int t;
|
|
while (sh--)
|
|
{
|
|
for (t = sw; t--;)
|
|
{
|
|
unsigned char a = ALPHA(*s);
|
|
if (a == 255)
|
|
*d++ = *s++;
|
|
else if (a == 0)
|
|
++d,++s; // nothing
|
|
else
|
|
{
|
|
unsigned char r = ((RED(*s)-RED(*d)) * a) / 256 + RED(*d);
|
|
unsigned char g = ((GREEN(*s)-GREEN(*d)) * a) / 256 + GREEN(*d);
|
|
unsigned char b = ((BLUE(*s)-BLUE(*d)) * a) / 256 + BLUE(*d);
|
|
if (ALPHA(*d) > a)
|
|
a = ALPHA(*d);
|
|
*d++ = RGBA(r,g,b,a);
|
|
++s;
|
|
}
|
|
}
|
|
d += dd;
|
|
s += ds;
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void IMAGE_colorize(GB_IMG *img, GB_COLOR color)
|
|
{
|
|
GET_POINTER(img, p, pm);
|
|
uint col;
|
|
int h, s, v;
|
|
int r, g, b;
|
|
int hcol, scol, vcol;
|
|
|
|
col = from_GB_COLOR(color, img->format);
|
|
COLOR_rgb_to_hsv(RED(col), GREEN(col), BLUE(col), &hcol, &scol, &vcol);
|
|
|
|
while (p != pm)
|
|
{
|
|
col = BGRA_from_format(*p, img->format);
|
|
COLOR_rgb_to_hsv(RED(col), GREEN(col), BLUE(col), &h, &s, &v);
|
|
COLOR_hsv_to_rgb(hcol, scol, v, &r, &g, &b);
|
|
*p++ = BGRA_to_format(RGBA(r, g, b, ALPHA(col)), img->format);
|
|
}
|
|
}
|
|
|
|
void IMAGE_mask(GB_IMG *img, GB_COLOR color)
|
|
{
|
|
GET_POINTER(img, p, pm);
|
|
uint col;
|
|
unsigned char red[256], blue[256], green[256], alpha[256];
|
|
int i, r, g, b, a;
|
|
|
|
col = from_GB_COLOR(color, img->format);
|
|
r = RED(col);
|
|
g = GREEN(col);
|
|
b = BLUE(col);
|
|
a = ALPHA(col);
|
|
|
|
for (i = 0; i < 256; i++)
|
|
{
|
|
red[i] = i * r / 255;
|
|
green[i] = i * g / 255;
|
|
blue[i] = i * b / 255;
|
|
alpha[i] = i * a / 255;
|
|
}
|
|
|
|
while (p != pm)
|
|
{
|
|
col = BGRA_from_format(*p, img->format);
|
|
*p++ = BGRA_to_format(RGBA(red[RED(col)], green[GREEN(col)], blue[BLUE(col)], alpha[ALPHA(col)]), img->format);
|
|
}
|
|
}
|
|
|
|
void IMAGE_mirror(GB_IMG *src, GB_IMG *dst, bool horizontal, bool vertical)
|
|
{
|
|
if (dst->width != src->width || dst->height != src->height || dst->format != src->format)
|
|
return;
|
|
|
|
int w = src->width;
|
|
int h = src->height;
|
|
|
|
int dxi = horizontal ? -1 : 1;
|
|
int dxs = horizontal ? (w - 1) : 0;
|
|
int dyi = vertical ? -1 : 1;
|
|
int dy = vertical ? (h - 1) : 0;
|
|
int sx, sy;
|
|
|
|
if (GB_IMAGE_FMT_IS_24_BITS(src->format))
|
|
{
|
|
for (sy = 0; sy < h; sy++, dy += dyi)
|
|
{
|
|
uint24 *ssl = (uint24 *)(src->data + sy * src->width * 3);
|
|
uint24 *dsl = (uint24 *)(dst->data + dy * dst->width * 3);
|
|
int dx = dxs;
|
|
for (sx = 0; sx < w; sx++, dx += dxi)
|
|
dsl[dx] = ssl[sx];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (sy = 0; sy < h; sy++, dy += dyi)
|
|
{
|
|
uint *ssl = (uint *)(src->data + sy * src->width * 4);
|
|
uint *dsl = (uint *)(dst->data + dy * dst->width * 4);
|
|
int dx = dxs;
|
|
for (sx = 0; sx < w; sx++, dx += dxi)
|
|
dsl[dx] = ssl[sx];
|
|
}
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
#define GET_RGBA(_col, _r, _g, _b, _a) { _r = RED(_col); _g = GREEN(_col); _b = BLUE(_col); _a = ALPHA(_col); }
|
|
|
|
void IMAGE_transform(GB_IMG *dst, GB_IMG *src, double sx, double sy, double sdx, double sdy)
|
|
{
|
|
int x, y;
|
|
double ssx;
|
|
double ssy;
|
|
uint col, cdp;
|
|
int ix, iy;
|
|
uchar r, g, b, a;
|
|
uchar rc, gc, bc, ac;
|
|
int wx, wy;
|
|
|
|
uint *dp = (uint *)dst->data;
|
|
memset(dp, 0, IMAGE_size(dst));
|
|
|
|
dp += dst->width;
|
|
|
|
for (y = 1; y < (dst->height - 1); y++)
|
|
{
|
|
ssx = sx;
|
|
ssy = sy;
|
|
|
|
dp++;
|
|
for (x = 1; x < (dst->width - 1); x++)
|
|
{
|
|
ix = sx;
|
|
iy = sy;
|
|
|
|
if (is_valid(src, ix, iy))
|
|
{
|
|
col = BGRA_from_format(*((uint *)src->data + iy * src->width + ix), src->format);
|
|
|
|
//dp[1] = RGBA(RED(col) * wx / 256, GREEN(col) * wx / 256, BLUE(col) * wx / 256, ALPHA(col) * wx / 256);
|
|
|
|
wx = 128;
|
|
|
|
cdp = BGRA_from_format(*dp, dst->format);
|
|
dp[0] = RGBA(RED(cdp) + RED(col) * wx / 256, GREEN(cdp) + GREEN(col) * wx / 256, BLUE(cdp) + BLUE(col) * wx / 256, ALPHA(col));
|
|
|
|
wx = 32;
|
|
|
|
cdp = BGRA_from_format(dp[-1], dst->format);
|
|
dp[-1] = RGBA(RED(cdp) + RED(col) * wx / 256, GREEN(cdp) + GREEN(col) * wx / 256, BLUE(cdp) + BLUE(col) * wx / 256, ALPHA(col));
|
|
|
|
cdp = BGRA_from_format(dp[-dst->width], dst->format);
|
|
dp[-dst->width] = RGBA(RED(cdp) + RED(col) * wx / 256, GREEN(cdp) + GREEN(col) * wx / 256, BLUE(cdp) + BLUE(col) * wx / 256, ALPHA(col));
|
|
|
|
dp[1] = RGBA(RED(col) * wx / 256, GREEN(col) * wx / 256, BLUE(col) * wx / 256, 0);
|
|
|
|
dp[dst->width] = dp[1]; //RGBA(RED(col) * wx / 256, GREEN(col) * wx / 256, BLUE(col) * wx / 256, ALPHA(col) * wx / 256);
|
|
}
|
|
|
|
sx += sdx;
|
|
sy += sdy;
|
|
dp++;
|
|
}
|
|
dp++;
|
|
sx = ssx - sdy;
|
|
sy = ssy + sdx;
|
|
}
|
|
}
|
|
#endif
|