rgbcommon.c
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上传日期:2013-07-19
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: rgbcommon.c,v 1.1.18.1 2004/07/09 02:00:07 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hlxclib/string.h"
- #include "nostatic/colorlib.h"
- #include "nostatic/rgb.h"
- #include "nostatic/rgbcommon.h"
- void IMAGE_SHRINK (unsigned char *dest_ptr, int dest_dx, int dest_dy,
- int dest_pitch, int dest_bpp, unsigned char *src_ptr,
- int src_dx, int src_dy, int src_pitch, int src_bpp,
- void (*row_func) (unsigned char *, int, unsigned char *, int),
- void (*row2x_func) (unsigned char *, unsigned char *,
- unsigned char *, int, unsigned char *, int))
- {
- register unsigned char *d = dest_ptr;
- register unsigned char *s = src_ptr;
- register int count = dest_dy;
- register int limit = src_dy >> 1;
- register int step = dest_dy;
- if (count)
- {
- do
- {
- (*row_func) (d, dest_dx, s, src_dx);
- d += dest_pitch;
- do
- {
- s += src_pitch;
- }
- while ((limit -= step) >= 0);
- limit += src_dy;
- }
- while (--count);
- }
- }
- void
- IMAGE_COPY (unsigned char *dest_ptr, int dest_dx, int dest_dy, int dest_pitch,
- int dest_bpp, unsigned char *src_ptr, int src_dx, int src_dy,
- int src_pitch, int src_bpp, void (*row_func) (unsigned char *,
- int,
- unsigned char *,
- int),
- void (*row2x_func) (unsigned char *, unsigned char *,
- unsigned char *, int, unsigned char *, int))
- {
- register unsigned char *d = dest_ptr;
- register unsigned char *s = src_ptr;
- register int count = dest_dy;
- if (count)
- {
- do
- {
- (*row_func) (d, dest_dx, s, src_dx);
- s += src_pitch;
- d += dest_pitch;
- }
- while (--count);
- }
- }
- void
- IMAGE_STRETCH (unsigned char *dest_ptr, int dest_dx, int dest_dy,
- int dest_pitch, int dest_bpp, unsigned char *src_ptr,
- int src_dx, int src_dy, int src_pitch, int src_bpp,
- void (*row_func) (unsigned char *, int, unsigned char *, int),
- void (*row2x_func) (unsigned char *, unsigned char *,
- unsigned char *, int, unsigned char *,
- int))
- {
- register unsigned char *d = dest_ptr;
- register unsigned char *s = src_ptr;
- register int dest_dx_bytes = dest_dx * dest_bpp;
- register int count = dest_dy;
- register int limit = dest_dy >> 1;
- register int step = src_dy;
- if (count)
- {
- goto start;
- do
- {
- if ((limit -= step) < 0)
- {
- limit += dest_dy;
- start:(*row_func) (d, dest_dx, s, src_dx);
- s += src_pitch;
- d += dest_pitch;
- }
- else
- {
- memcpy (d, d - dest_pitch, dest_dx_bytes);
- d += dest_pitch;
- }
- }
- while (--count);
- }
- }
- void
- IMAGE_STRETCH2X (unsigned char *dest_ptr, int dest_dx, int dest_dy,
- int dest_pitch, int dest_bpp, unsigned char *src_ptr,
- int src_dx, int src_dy, int src_pitch, int src_bpp,
- void (*row_func) (unsigned char *, int, unsigned char *,
- int), void (*row2x_func) (unsigned char *,
- unsigned char *,
- unsigned char *,
- int,
- unsigned char *,
- int))
- {
- register unsigned char *d1 = dest_ptr;
- register unsigned char *d12 = dest_ptr + dest_pitch;
- register unsigned char *d2 = dest_ptr + dest_pitch * 2;
- register unsigned char *s = src_ptr;
- register int dest_dx_bytes = dest_dx * dest_bpp;
- register int count = src_dy;
- if (count)
- {
- (*row_func) (d1, dest_dx, s, src_dx);
- s += src_pitch;
- while (--count)
- {
- (*row2x_func) (d1, d12, d2, dest_dx, s, src_dx);
- d1 += 2 * dest_pitch;
- d12 += 2 * dest_pitch;
- d2 += 2 * dest_pitch;
- s += src_pitch;
- }
- memcpy (d12, d1, dest_dx_bytes);
- }
- }
- void
- IMAGE_STRETCH2XPLUS (unsigned char *dest_ptr, int dest_dx, int dest_dy,
- int dest_pitch, int dest_bpp, unsigned char *src_ptr,
- int src_dx, int src_dy, int src_pitch, int src_bpp,
- void (*row_func) (unsigned char *, int, unsigned char *,
- int),
- void (*row2x_func) (unsigned char *, unsigned char *,
- unsigned char *, int,
- unsigned char *, int))
- {
- register unsigned char *d = dest_ptr, *d1;
- register unsigned char *s = src_ptr;
- register int dest_dx_bytes = dest_dx * dest_bpp;
- register int count = dest_dy;
- register int limit = dest_dy >> 1;
- register int step = src_dy << 1;
- register int remainder = (2 * dest_dy - limit) / step;
- if (count)
- {
- (*row_func) (d, dest_dx, s, src_dx);
- s += src_pitch;
- if (!(count -= remainder))
- {
- remainder--;
- goto end;
- }
- while (1)
- {
- goto start;
- do
- {
- memcpy (d + dest_pitch, d, dest_dx_bytes);
- d += dest_pitch;
- start:
- if (!(--count))
- goto end;
- }
- while ((limit -= step) >= 0);
- limit += dest_dy;
- d1 = d;
- do
- {
- d += dest_pitch;
- if (!(--count))
- goto end_2;
- }
- while ((limit -= step) >= 0);
- limit += dest_dy;
- (*row2x_func) (d1, d1 + dest_pitch, d + dest_pitch, dest_dx, s,
- src_dx);
- d1 += dest_pitch;
- s += src_pitch;
- while (d1 != d)
- {
- memcpy (d1 + dest_pitch, d1, dest_dx_bytes);
- d1 += dest_pitch;
- }
- d += dest_pitch;
- }
- end_2:
- while (d1 != d)
- {
- memcpy (d1 + dest_pitch, d1, dest_dx_bytes);
- d1 += dest_pitch;
- }
- end:
- while (remainder--)
- {
- memcpy (d + dest_pitch, d, dest_dx_bytes);
- d += dest_pitch;
- }
- }
- }