rgbcommon.c

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 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 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (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.  
 *  
 * 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;
        }
    }
}