// -*- c++ -*-       
/////////////////////////////////////////////////////////////////////////////
// Copyright (c) 2002 Tom Barry.  All rights reserved.
/////////////////////////////////////////////////////////////////////////////
//
//  This file is subject to the terms of the GNU General Public License as
//  published by the Free Software Foundation.  A copy of this license is
//  included with this software distribution in the file COPYING.  If you
//  do not have a copy, you may obtain a copy by writing to the Free
//  Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
//
//  This software 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
//
//  Also, this program is "Philanthropy-Ware".  That is, if you like it and
//  feel the need to reward or inspire the author then please feel free (but
//  not obligated) to consider joining or donating to the Electronic Frontier
//  Foundation. This will help keep cyber space free of barbed wire and bullsh*t.
//  See www.eff.org for details
/////////////////////////////////////////////////////////////////////////////

#ifdef IS_SSE2
//sse2 code deleted for now
#else

// Version for non-SSE2

#ifdef SKIP_SEARCH
            "movq    %%mm6, %%mm0\n\t"            // just use the results of our weird bob
#else


            // JA 9/Dec/2002
            // failed experiment
            // but leave in placeholder for me to play about
#ifdef DONT_USE_STRANGE_BOB
            // Use the best weave if diffs less than 10 as that
            // means the image is still or moving cleanly
            // if there is motion we will clip which will catch anything
            "psubusb "_FOURS", %%mm7\n\t"          // sets bits to zero if weave diff < 4
            "pxor    %%mm0, %%mm0\n\t"
            "pcmpeqb %%mm0, %%mm7\n\t"            // all ff where weave better, else 00
            "pcmpeqb %%mm7, %%mm0\n\t"            // all ff where bob better, else 00
            "pand    %%mm6, %%mm0\n\t"            // use bob for these pixel values
            "pand    %%mm5, %%mm7\n\t"            // use weave for these
            "por     %%mm7, %%mm0\n\t"            // combine both
#else
            // Use the better of bob or weave
            //      pminub  mm4, TENS           // the most we care about
            V_PMINUB ("%%mm4", _TENS, "%%mm0")   // the most we care about
            
            "psubusb %%mm4, %%mm7\n\t"            // foregive that much from weave est?
            "psubusb "_FOURS", %%mm7\n\t"       // bias it a bit toward weave
            "pxor    %%mm0, %%mm0\n\t"
            "pcmpeqb %%mm0, %%mm7\n\t"            // all ff where weave better, else 00
            "pcmpeqb %%mm7, %%mm0\n\t"            // all ff where bob better, else 00
            "pand    %%mm6, %%mm0\n\t"            // use bob for these pixel values
            "pand    %%mm5, %%mm7\n\t"            // use weave for these
            "por     %%mm7, %%mm0\n\t"            // combine both
#endif
            
            
                //      pminub  mm0, Max_Vals       // but clip to catch the stray error
                V_PMINUB ("%%mm0", _Max_Vals, "%%mm1") // but clip to catch the stray error
                //      pmaxub  mm0, Min_Vals
                V_PMAXUB ("%%mm0", _Min_Vals)
                
#endif


            MOVX"     "_pDest", %%"XAX"\n\t"
                
#ifdef USE_VERTICAL_FILTER
            "movq    %%mm0, %%mm1\n\t"
            //      pavgb   mm0, qword ptr["XBX"]
            V_PAVGB ("%%mm0", "(%%"XBX")", "%%mm2", _ShiftMask)
            //      movntq  qword ptr["XAX"+"XDX"], mm0
            V_MOVNTQ ("(%"XAX", %%"XDX")", "%%mm0")
            //      pavgb   mm1, qword ptr["XBX"+"XCX"]
            V_PAVGB ("%%mm1", "(%%"XBX", %%"XCX")", "%%mm2", _ShiftMask)
            "addq   "_dst_pitchw", %%"XBX
            //      movntq  qword ptr["XAX"+"XDX"], mm1
            V_MOVNTQ ("(%%"XAX", %%"XDX")", "%%mm1")
#else
                
            //      movntq  qword ptr["XAX"+"XDX"], mm0
                V_MOVNTQ ("(%%"XAX", %%"XDX")", "%%mm0")
#endif
                
           LEAX"    8(%%"XDX"), %%"XDX"\n\t"       // bump offset pointer
           CMPX"    "_Last8", %%"XDX"\n\t"       // done with line?
           "jb      1b\n\t"                    // y
#endif

           MOVX" "_oldbx", %%"XBX"\n\t"

        : /* no outputs */

        : "m"(pBob),
          "m"(src_pitch2),
          "m"(ShiftMask),
          "m"(pDest),
          "m"(dst_pitchw),
          "m"(Last8),
          "m"(pSrc),
          "m"(pSrcP),
          "m"(pBobP),
          "m"(DiffThres),
          "m"(Min_Vals),
          "m"(Max_Vals),
          "m"(FOURS),
          "m"(TENS),
          "m"(ONES),
          "m"(UVMask),
          "m"(Max_Mov),
          "m"(YMask),
          "m"(oldbx)

        : XAX, XCX, XDX, XSI, XDI,
#ifdef ARCH_386
          "st", "st(1)", "st(2)", "st(3)", "st(4)", "st(5)", "st(6)", "st(7)",
#endif
          "mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7",
          "memory", "cc"
        );

        // adjust for next line
        pSrc  += src_pitch2;
        pSrcP += src_pitch2;
        pDest += dst_pitch2;
        pBob  += src_pitch2;
        pBobP += src_pitch2;
    }
    
    return 0;
