/*****************************************************************************
 * motionmmxext.c : MMX EXT motion compensation module for vlc
 *****************************************************************************
 * Copyright (C) 2001 VideoLAN
 * $Id: motionmmxext.c,v 1.3 2003/03/30 18:14:37 gbazin Exp $
 *
 * Authors: Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
 *          Michel Lespinasse <walken@zoy.org>
 *
 * 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, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <stdlib.h>                                      /* malloc(), free() */
#include <string.h>

#include <vlc/vlc.h>

#include "mmx.h"

/*****************************************************************************
 * Local prototype.
 *****************************************************************************/
static int Open ( vlc_object_t * );

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
vlc_module_begin();
    set_description( _("MMX EXT motion compensation") );
    set_capability( "motion compensation", 200 );
    add_requirement( MMXEXT );
    add_shortcut( "mmxext" );
    set_callbacks( Open, NULL );
vlc_module_end();

/*****************************************************************************
 * Motion compensation in MMXEXT (OK I know this does 3DNow too and it's ugly)
 *****************************************************************************/

#define CPU_MMXEXT 0
#define CPU_3DNOW 1


/* CPU_MMXEXT/CPU_3DNOW adaptation layer */

#define pavg_r2r(src,dest)                                                  \
do {                                                                        \
    if (cpu == CPU_MMXEXT)                                                  \
        pavgb_r2r (src, dest);                                              \
    else                                                                    \
        pavgusb_r2r (src, dest);                                            \
} while (0)

#define pavg_m2r(src,dest)                                                  \
do {                                                                        \
    if (cpu == CPU_MMXEXT)                                                  \
        pavgb_m2r (src, dest);                                              \
    else                                                                    \
        pavgusb_m2r (src, dest);                                            \
} while (0)


/* CPU_MMXEXT code */


static inline void MC_put1_8 (int height, yuv_data_t * dest, yuv_data_t * ref,
                              int stride)
{
    do {
        movq_m2r (*ref, mm0);
        movq_r2m (mm0, *dest);
        ref += stride;
        dest += stride;
    } while (--height);
}

static inline void MC_put1_16 (int height, yuv_data_t * dest, yuv_data_t * ref,
                               int stride)
{
    do {
        movq_m2r (*ref, mm0);
        movq_m2r (*(ref+8), mm1);
        ref += stride;
        movq_r2m (mm0, *dest);
        movq_r2m (mm1, *(dest+8));
        dest += stride;
    } while (--height);
}

static inline void MC_avg1_8 (int height, yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int cpu)
{
    do {
        movq_m2r (*ref, mm0);
        pavg_m2r (*dest, mm0);
        ref += stride;
        movq_r2m (mm0, *dest);
        dest += stride;
    } while (--height);
}

static inline void MC_avg1_16 (int height, yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int cpu)
{
    do {
        movq_m2r (*ref, mm0);
        movq_m2r (*(ref+8), mm1);
        pavg_m2r (*dest, mm0);
        pavg_m2r (*(dest+8), mm1);
        movq_r2m (mm0, *dest);
        ref += stride;
        movq_r2m (mm1, *(dest+8));
        dest += stride;
    } while (--height);
}

static inline void MC_put2_8 (int height, yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int offset, int cpu)
{
    do {
        movq_m2r (*ref, mm0);
        pavg_m2r (*(ref+offset), mm0);
        ref += stride;
        movq_r2m (mm0, *dest);
        dest += stride;
    } while (--height);
}

static inline void MC_put2_16 (int height, yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int offset, int cpu)
{
    do {
        movq_m2r (*ref, mm0);
        movq_m2r (*(ref+8), mm1);
        pavg_m2r (*(ref+offset), mm0);
        pavg_m2r (*(ref+offset+8), mm1);
        movq_r2m (mm0, *dest);
        ref += stride;
        movq_r2m (mm1, *(dest+8));
        dest += stride;
    } while (--height);
}

static inline void MC_avg2_8 (int height, yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int offset, int cpu)
{
    do {
        movq_m2r (*ref, mm0);
        pavg_m2r (*(ref+offset), mm0);
        pavg_m2r (*dest, mm0);
        ref += stride;
        movq_r2m (mm0, *dest);
        dest += stride;
    } while (--height);
}

static inline void MC_avg2_16 (int height, yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int offset, int cpu)
{
    do {
        movq_m2r (*ref, mm0);
        movq_m2r (*(ref+8), mm1);
        pavg_m2r (*(ref+offset), mm0);
        pavg_m2r (*(ref+offset+8), mm1);
        pavg_m2r (*dest, mm0);
        pavg_m2r (*(dest+8), mm1);
        ref += stride;
        movq_r2m (mm0, *dest);
        movq_r2m (mm1, *(dest+8));
        dest += stride;
    } while (--height);
}

static mmx_t mask_one = {0x0101010101010101LL};

static inline void MC_put4_8 (int height, yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int cpu)
{
    movq_m2r (*ref, mm0);
    movq_m2r (*(ref+1), mm1);
    movq_r2r (mm0, mm7);
    pxor_r2r (mm1, mm7);
    pavg_r2r (mm1, mm0);
    ref += stride;

    do {
        movq_m2r (*ref, mm2);
        movq_r2r (mm0, mm5);

        movq_m2r (*(ref+1), mm3);
        movq_r2r (mm2, mm6);

        pxor_r2r (mm3, mm6);
        pavg_r2r (mm3, mm2);

        por_r2r (mm6, mm7);
        pxor_r2r (mm2, mm5);

        pand_r2r (mm5, mm7);
        pavg_r2r (mm2, mm0);

        pand_m2r (mask_one, mm7);

        psubusb_r2r (mm7, mm0);

        ref += stride;
        movq_r2m (mm0, *dest);
        dest += stride;

        movq_r2r (mm6, mm7);        /* unroll ! */
        movq_r2r (mm2, mm0);        /* unroll ! */
    } while (--height);
}

static inline void MC_put4_16 (int height, yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int cpu)
{
    do {
        movq_m2r (*ref, mm0);
        movq_m2r (*(ref+stride+1), mm1);
        movq_r2r (mm0, mm7);
        movq_m2r (*(ref+1), mm2);
        pxor_r2r (mm1, mm7);
        movq_m2r (*(ref+stride), mm3);
        movq_r2r (mm2, mm6);
        pxor_r2r (mm3, mm6);
        pavg_r2r (mm1, mm0);
        pavg_r2r (mm3, mm2);
        por_r2r (mm6, mm7);
        movq_r2r (mm0, mm6);
        pxor_r2r (mm2, mm6);
        pand_r2r (mm6, mm7);
        pand_m2r (mask_one, mm7);
        pavg_r2r (mm2, mm0);
        psubusb_r2r (mm7, mm0);
        movq_r2m (mm0, *dest);

        movq_m2r (*(ref+8), mm0);
        movq_m2r (*(ref+stride+9), mm1);
        movq_r2r (mm0, mm7);
        movq_m2r (*(ref+9), mm2);
        pxor_r2r (mm1, mm7);
        movq_m2r (*(ref+stride+8), mm3);
        movq_r2r (mm2, mm6);
        pxor_r2r (mm3, mm6);
        pavg_r2r (mm1, mm0);
        pavg_r2r (mm3, mm2);
        por_r2r (mm6, mm7);
        movq_r2r (mm0, mm6);
        pxor_r2r (mm2, mm6);
        pand_r2r (mm6, mm7);
        pand_m2r (mask_one, mm7);
        pavg_r2r (mm2, mm0);
        psubusb_r2r (mm7, mm0);
        ref += stride;
        movq_r2m (mm0, *(dest+8));
        dest += stride;
    } while (--height);
}

static inline void MC_avg4_8 (int height, yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int cpu)
{
    do {
        movq_m2r (*ref, mm0);
        movq_m2r (*(ref+stride+1), mm1);
        movq_r2r (mm0, mm7);
        movq_m2r (*(ref+1), mm2);
        pxor_r2r (mm1, mm7);
        movq_m2r (*(ref+stride), mm3);
        movq_r2r (mm2, mm6);
        pxor_r2r (mm3, mm6);
        pavg_r2r (mm1, mm0);
        pavg_r2r (mm3, mm2);
        por_r2r (mm6, mm7);
        movq_r2r (mm0, mm6);
        pxor_r2r (mm2, mm6);
        pand_r2r (mm6, mm7);
        pand_m2r (mask_one, mm7);
        pavg_r2r (mm2, mm0);
        psubusb_r2r (mm7, mm0);
        movq_m2r (*dest, mm1);
        pavg_r2r (mm1, mm0);
        ref += stride;
        movq_r2m (mm0, *dest);
        dest += stride;
    } while (--height);
}

static inline void MC_avg4_16 (int height, yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int cpu)
{
    do {
        movq_m2r (*ref, mm0);
        movq_m2r (*(ref+stride+1), mm1);
        movq_r2r (mm0, mm7);
        movq_m2r (*(ref+1), mm2);
        pxor_r2r (mm1, mm7);
        movq_m2r (*(ref+stride), mm3);
        movq_r2r (mm2, mm6);
        pxor_r2r (mm3, mm6);
        pavg_r2r (mm1, mm0);
        pavg_r2r (mm3, mm2);
        por_r2r (mm6, mm7);
        movq_r2r (mm0, mm6);
        pxor_r2r (mm2, mm6);
        pand_r2r (mm6, mm7);
        pand_m2r (mask_one, mm7);
        pavg_r2r (mm2, mm0);
        psubusb_r2r (mm7, mm0);
        movq_m2r (*dest, mm1);
        pavg_r2r (mm1, mm0);
        movq_r2m (mm0, *dest);

        movq_m2r (*(ref+8), mm0);
        movq_m2r (*(ref+stride+9), mm1);
        movq_r2r (mm0, mm7);
        movq_m2r (*(ref+9), mm2);
        pxor_r2r (mm1, mm7);
        movq_m2r (*(ref+stride+8), mm3);
        movq_r2r (mm2, mm6);
        pxor_r2r (mm3, mm6);
        pavg_r2r (mm1, mm0);
        pavg_r2r (mm3, mm2);
        por_r2r (mm6, mm7);
        movq_r2r (mm0, mm6);
        pxor_r2r (mm2, mm6);
        pand_r2r (mm6, mm7);
        pand_m2r (mask_one, mm7);
        pavg_r2r (mm2, mm0);
        psubusb_r2r (mm7, mm0);
        movq_m2r (*(dest+8), mm1);
        pavg_r2r (mm1, mm0);
        ref += stride;
        movq_r2m (mm0, *(dest+8));
        dest += stride;
    } while (--height);
}

static void MC_avg_16_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_avg1_16 (height, dest, ref, stride, CPU_MMXEXT);
}

static void MC_avg_8_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                             int stride, int height)
{
    MC_avg1_8 (height, dest, ref, stride, CPU_MMXEXT);
}

static void MC_put_16_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_put1_16 (height, dest, ref, stride);
}

static void MC_put_8_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                             int stride, int height)
{
    MC_put1_8 (height, dest, ref, stride);
}

static void MC_avg_x16_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int height)
{
    MC_avg2_16 (height, dest, ref, stride, 1, CPU_MMXEXT);
}

static void MC_avg_x8_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_avg2_8 (height, dest, ref, stride, 1, CPU_MMXEXT);
}

static void MC_put_x16_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int height)
{
    MC_put2_16 (height, dest, ref, stride, 1, CPU_MMXEXT);
}

static void MC_put_x8_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_put2_8 (height, dest, ref, stride, 1, CPU_MMXEXT);
}

static void MC_avg_y16_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int height)
{
    MC_avg2_16 (height, dest, ref, stride, stride, CPU_MMXEXT);
}

static void MC_avg_y8_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_avg2_8 (height, dest, ref, stride, stride, CPU_MMXEXT);
}

static void MC_put_y16_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int height)
{
    MC_put2_16 (height, dest, ref, stride, stride, CPU_MMXEXT);
}

static void MC_put_y8_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_put2_8 (height, dest, ref, stride, stride, CPU_MMXEXT);
}

static void MC_avg_xy16_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                                int stride, int height)
{
    MC_avg4_16 (height, dest, ref, stride, CPU_MMXEXT);
}

static void MC_avg_xy8_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int height)
{
    MC_avg4_8 (height, dest, ref, stride, CPU_MMXEXT);
}

static void MC_put_xy16_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                                int stride, int height)
{
    MC_put4_16 (height, dest, ref, stride, CPU_MMXEXT);
}

static void MC_put_xy8_mmxext (yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int height)
{
    MC_put4_8 (height, dest, ref, stride, CPU_MMXEXT);
}


static void MC_avg_16_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_avg1_16 (height, dest, ref, stride, CPU_3DNOW);
}

static void MC_avg_8_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                             int stride, int height)
{
    MC_avg1_8 (height, dest, ref, stride, CPU_3DNOW);
}

static void MC_put_16_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_put1_16 (height, dest, ref, stride);
}

static void MC_put_8_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                             int stride, int height)
{
    MC_put1_8 (height, dest, ref, stride);
}

static void MC_avg_x16_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int height)
{
    MC_avg2_16 (height, dest, ref, stride, 1, CPU_3DNOW);
}

static void MC_avg_x8_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_avg2_8 (height, dest, ref, stride, 1, CPU_3DNOW);
}

static void MC_put_x16_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int height)
{
    MC_put2_16 (height, dest, ref, stride, 1, CPU_3DNOW);
}

static void MC_put_x8_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_put2_8 (height, dest, ref, stride, 1, CPU_3DNOW);
}

static void MC_avg_y16_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int height)
{
    MC_avg2_16 (height, dest, ref, stride, stride, CPU_3DNOW);
}

static void MC_avg_y8_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_avg2_8 (height, dest, ref, stride, stride, CPU_3DNOW);
}

static void MC_put_y16_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                               int stride, int height)
{
    MC_put2_16 (height, dest, ref, stride, stride, CPU_3DNOW);
}

static void MC_put_y8_3dnow (yuv_data_t * dest, yuv_data_t * ref,
                              int stride, int height)
{
    MC_put2_8 (height, dest, ref, stride, stride, CPU_3DNOW);
}

/*****************************************************************************
 * Functions exported as capabilities. They are declared as static so that
 * we don't pollute the namespace too much.
 *****************************************************************************/
static void (* ppppf_motion[2][2][4])( yuv_data_t *, yuv_data_t *, int, int ) =
{
    /* Copying functions */
    {
        /* Width == 16 */
        { MC_put_16_mmxext, MC_put_x16_mmxext, MC_put_y16_mmxext, MC_put_xy16_mmxext },
        /* Width == 8 */
        { MC_put_8_mmxext,  MC_put_x8_mmxext,  MC_put_y8_mmxext, MC_put_xy8_mmxext }
    },
    /* Averaging functions */
    {
        /* Width == 16 */  
        { MC_avg_16_mmxext, MC_avg_x16_mmxext, MC_avg_y16_mmxext, MC_avg_xy16_mmxext },
        /* Width == 8 */
        { MC_avg_8_mmxext,  MC_avg_x8_mmxext,  MC_avg_y8_mmxext,  MC_avg_xy8_mmxext }
    }
};

static int Open ( vlc_object_t *p_this )
{
    p_this->p_private = ppppf_motion;
    return VLC_SUCCESS;
}

