yuv_sw.c

linux下的图形界面开发minigui最新源代码

/*
**  $Id: yuv_sw.c,v 1.4 2003/09/04 06:02:53 weiym Exp $
**  
**  Port to MiniGUI by Wei Yongming (2001/10/03).
**  Copyright (C) 2001 ~ 2002 Wei Yongming.
**  Copyright (C) 2003 Feynman Software.
**
**  SDL - Simple DirectMedia Layer
**  Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
*/

/*
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

/* This is the software implementation of the YUV video overlay support */

/* This code was derived from code carrying the following copyright notices:

 * Copyright (c) 1995 The Regents of the University of California.
 * All rights reserved.
 * 
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 * 
 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
 * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

 * Copyright (c) 1995 Erik Corry
 * All rights reserved.
 * 
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement is
 * hereby granted, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 * 
 * IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
 * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
 * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
 * BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
 * UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

 * Portions of this software Copyright (c) 1995 Brown University.
 * All rights reserved.
 * 
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose, without fee, and without written agreement
 * is hereby granted, provided that the above copyright notice and the
 * following two paragraphs appear in all copies of this software.
 * 
 * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
 * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN
 * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
 * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
 * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "common.h"
#include "newgal.h"
#include "stretch_c.h"
#include "yuvfuncs.h"
#include "yuv_sw_c.h"

/* Function to check the CPU flags */
#define MMX_CPU		0x800000
#ifdef USE_ASMBLIT
#define CPU_Flags()	Hermes_X86_CPU()
#else
#define CPU_Flags()	0L
#endif

#ifdef USE_ASMBLIT
#define X86_ASSEMBLER
#define HermesConverterInterface	void
#define HermesClearInterface		void
#define STACKCALL
typedef Uint32 int32;

#include "HeadX86.h"
#endif

/* The functions used to manipulate software video overlays */
static struct private_yuvhwfuncs sw_yuvfuncs = {
	GAL_LockYUV_SW,
	GAL_UnlockYUV_SW,
	GAL_DisplayYUV_SW,
	GAL_FreeYUV_SW
};

/* RGB conversion lookup tables */
struct private_yuvhwdata {
	GAL_Surface *stretch;
	GAL_Surface *display;
	Uint8 *pixels;
	int *colortab;
	Uint32 *rgb_2_pix;
	void (*Display1X)(int *colortab, Uint32 *rgb_2_pix,
                          unsigned char *lum, unsigned char *cr,
                          unsigned char *cb, unsigned char *out,
                          int rows, int cols, int mod );
	void (*Display2X)(int *colortab, Uint32 *rgb_2_pix,
	                  unsigned char *lum, unsigned char *cr,
                          unsigned char *cb, unsigned char *out,
                          int rows, int cols, int mod );

	/* These are just so we don't have to allocate them separately */
	Uint16 pitches[3];
	Uint8 *planes[3];
};


/* The colorspace conversion functions */

extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
                                     unsigned char *lum, unsigned char *cr,
                                     unsigned char *cb, unsigned char *out,
                                     int rows, int cols, int mod );
extern void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
                                     unsigned char *lum, unsigned char *cr,
                                     unsigned char *cb, unsigned char *out,
                                     int rows, int cols, int mod );

static void Color16DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
                                    unsigned char *lum, unsigned char *cr,
                                    unsigned char *cb, unsigned char *out,
                                    int rows, int cols, int mod )
{
    unsigned short* row1;
    unsigned short* row2;
    unsigned char* lum2;
    int x, y;
    int cr_r;
    int crb_g;
    int cb_b;
    int cols_2 = cols / 2;

    row1 = (unsigned short*) out;
    row2 = row1 + cols + mod;
    lum2 = lum + cols;

    mod += cols + mod;

    y = rows / 2;
    while( y-- )
    {
        x = cols_2;
        while( x-- )
        {
            register int L;

            cr_r   = 0*768+256 + colortab[ *cr + 0*256 ];
            crb_g  = 1*768+256 + colortab[ *cr + 1*256 ]
                               + colortab[ *cb + 2*256 ];
            cb_b   = 2*768+256 + colortab[ *cb + 3*256 ];
            ++cr; ++cb;

            L = *lum++;
            *row1++ = (rgb_2_pix[ L + cr_r ] |
                       rgb_2_pix[ L + crb_g ] |
                       rgb_2_pix[ L + cb_b ]);

            L = *lum++;
            *row1++ = (rgb_2_pix[ L + cr_r ] |
                       rgb_2_pix[ L + crb_g ] |
                       rgb_2_pix[ L + cb_b ]);


            /* Now, do second row.  */

            L = *lum2++;
            *row2++ = (rgb_2_pix[ L + cr_r ] |
                       rgb_2_pix[ L + crb_g ] |
                       rgb_2_pix[ L + cb_b ]);

            L = *lum2++;
            *row2++ = (rgb_2_pix[ L + cr_r ] |
                       rgb_2_pix[ L + crb_g ] |
                       rgb_2_pix[ L + cb_b ]);
        }

        /*
         * These values are at the start of the next line, (due
         * to the ++'s above),but they need to be at the start
         * of the line after that.
         */
        lum  += cols;
        lum2 += cols;
        row1 += mod;
        row2 += mod;
    }
}

static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
                                    unsigned char *lum, unsigned char *cr,
                                    unsigned char *cb, unsigned char *out,
                                    int rows, int cols, int mod )
{
    unsigned int value;
    unsigned char* row1;
    unsigned char* row2;
    unsigned char* lum2;
    int x, y;
    int cr_r;
    int crb_g;
    int cb_b;
    int cols_2 = cols / 2;

    row1 = out;
    row2 = row1 + cols*3 + mod*3;
    lum2 = lum + cols;

    mod += cols + mod;
    mod *= 3;

    y = rows / 2;
    while( y-- )
    {
        x = cols_2;
        while( x-- )
        {
            register int L;

            cr_r   = 0*768+256 + colortab[ *cr + 0*256 ];
            crb_g  = 1*768+256 + colortab[ *cr + 1*256 ]
                               + colortab[ *cb + 2*256 ];
            cb_b   = 2*768+256 + colortab[ *cb + 3*256 ];
            ++cr; ++cb;

            L = *lum++;
            value = (rgb_2_pix[ L + cr_r ] |
                     rgb_2_pix[ L + crb_g ] |
                     rgb_2_pix[ L + cb_b ]);
            *row1++ = (value      ) & 0xFF;
            *row1++ = (value >>  8) & 0xFF;
            *row1++ = (value >> 16) & 0xFF;

            L = *lum++;
            value = (rgb_2_pix[ L + cr_r ] |
                     rgb_2_pix[ L + crb_g ] |
                     rgb_2_pix[ L + cb_b ]);
            *row1++ = (value      ) & 0xFF;
            *row1++ = (value >>  8) & 0xFF;
            *row1++ = (value >> 16) & 0xFF;


            /* Now, do second row.  */

            L = *lum2++;
            value = (rgb_2_pix[ L + cr_r ] |
                     rgb_2_pix[ L + crb_g ] |
                     rgb_2_pix[ L + cb_b ]);
            *row2++ = (value      ) & 0xFF;
            *row2++ = (value >>  8) & 0xFF;
            *row2++ = (value >> 16) & 0xFF;

            L = *lum2++;
            value = (rgb_2_pix[ L + cr_r ] |
                     rgb_2_pix[ L + crb_g ] |
                     rgb_2_pix[ L + cb_b ]);
            *row2++ = (value      ) & 0xFF;
            *row2++ = (value >>  8) & 0xFF;
            *row2++ = (value >> 16) & 0xFF;
        }

        /*
         * These values are at the start of the next line, (due
         * to the ++'s above),but they need to be at the start
         * of the line after that.
         */
        lum  += cols;
        lum2 += cols;
        row1 += mod;
        row2 += mod;
    }
}

static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
                                    unsigned char *lum, unsigned char *cr,
                                    unsigned char *cb, unsigned char *out,
                                    int rows, int cols, int mod )
{
    unsigned int* row1;
    unsigned int* row2;
    unsigned char* lum2;
    int x, y;
    int cr_r;
    int crb_g;
    int cb_b;
    int cols_2 = cols / 2;

    row1 = (unsigned int*) out;
    row2 = row1 + cols + mod;
    lum2 = lum + cols;

    mod += cols + mod;

    y = rows / 2;
    while( y-- )
    {
        x = cols_2;
        while( x-- )
        {
            register int L;

            cr_r   = 0*768+256 + colortab[ *cr + 0*256 ];
            crb_g  = 1*768+256 + colortab[ *cr + 1*256 ]
                               + colortab[ *cb + 2*256 ];
            cb_b   = 2*768+256 + colortab[ *cb + 3*256 ];
            ++cr; ++cb;

            L = *lum++;
            *row1++ = (rgb_2_pix[ L + cr_r ] |
                       rgb_2_pix[ L + crb_g ] |
                       rgb_2_pix[ L + cb_b ]);

            L = *lum++;
            *row1++ = (rgb_2_pix[ L + cr_r ] |
                       rgb_2_pix[ L + crb_g ] |
                       rgb_2_pix[ L + cb_b ]);


            /* Now, do second row.  */

            L = *lum2++;
            *row2++ = (rgb_2_pix[ L + cr_r ] |
                       rgb_2_pix[ L + crb_g ] |
                       rgb_2_pix[ L + cb_b ]);

            L = *lum2++;
            *row2++ = (rgb_2_pix[ L + cr_r ] |
                       rgb_2_pix[ L + crb_g ] |
                       rgb_2_pix[ L + cb_b ]);
        }

        /*
         * These values are at the start of the next line, (due
         * to the ++'s above),but they need to be at the start
         * of the line after that.
         */
        lum  += cols;
        lum2 += cols;
        row1 += mod;
        row2 += mod;
    }
}

/*
 * In this function I make use of a nasty trick. The tables have the lower
 * 16 bits replicated in the upper 16. This means I can write ints and get
 * the horisontal doubling for free (almost).
 */
static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix,
                                    unsigned char *lum, unsigned char *cr,
                                    unsigned char *cb, unsigned char *out,
                                    int rows, int cols, int mod )
{
    unsigned int* row1 = (unsigned int*) out;
    const int next_row = cols+(mod/2);
    unsigned int* row2 = row1 + 2*next_row;
    unsigned char* lum2;
    int x, y;
    int cr_r;
    int crb_g;
    int cb_b;
    int cols_2 = cols / 2;

    lum2 = lum + cols;

    mod = (next_row * 3) + (mod/2);

    y = rows / 2;
    while( y-- )
    {
        x = cols_2;
        while( x-- )
        {
            register int L;

            cr_r   = 0*768+256 + colortab[ *cr + 0*256 ];
            crb_g  = 1*768+256 + colortab[ *cr + 1*256 ]
                               + colortab[ *cb + 2*256 ];
            cb_b   = 2*768+256 + colortab[ *cb + 3*256 ];
            ++cr; ++cb;

            L = *lum++;
            row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] |
                                        rgb_2_pix[ L + crb_g ] |
                                        rgb_2_pix[ L + cb_b ]);
            row1++;

            L = *lum++;
            row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] |
                                        rgb_2_pix[ L + crb_g ] |
                                        rgb_2_pix[ L + cb_b ]);
            row1++;


            /* Now, do second row. */

            L = *lum2++;
            row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] |
                                        rgb_2_pix[ L + crb_g ] |
                                        rgb_2_pix[ L + cb_b ]);
            row2++;

            L = *lum2++;
            row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] |