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250 lines
11 KiB
NASM
250 lines
11 KiB
NASM
/*
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*
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* GStreamer
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* Copyright (c) 2001 Tom Barry. All rights reserved.
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* Copyright (C) 2008 Sebastian Dröge <slomo@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Relicensed for GStreamer from GPL to LGPL with permit from Tom Barry.
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* See: http://bugzilla.gnome.org/show_bug.cgi?id=163578
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*/
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#include "x86-64_macros.inc"
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void
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FUNCT_NAME (GstDeinterlaceMethodGreedyH *self, uint8_t * L1, uint8_t * L2, uint8_t * L3, uint8_t * L2P,
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uint8_t * Dest, int size)
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{
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// in tight loop some vars are accessed faster in local storage
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int64_t YMask = 0x00ff00ff00ff00ffull; // to keep only luma
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int64_t UVMask = 0xff00ff00ff00ff00ull; // to keep only chroma
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int64_t ShiftMask = 0xfefefefefefefefeull; // to avoid shifting chroma to luma
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int64_t QW256 = 0x0100010001000100ull; // 4 256's
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int64_t MaxComb;
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int64_t MotionThreshold;
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int64_t MotionSense;
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int64_t i;
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long LoopCtr;
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long oldbx;
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int64_t QW256B;
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int64_t LastAvg = 0; //interp value from left qword
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// FIXME: Use C implementation if the width is not a multiple of 4
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// Do something more optimal later
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if (size % 8 != 0)
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greedyDScaler_C (self, L1, L2, L3, L2P, Dest, size);
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// Set up our two parms that are actually evaluated for each pixel
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i = self->max_comb;
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MaxComb =
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i << 56 | i << 48 | i << 40 | i << 32 | i << 24 | i << 16 | i << 8 | i;
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i = self->motion_threshold; // scale to range of 0-257
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MotionThreshold = i << 48 | i << 32 | i << 16 | i | UVMask;
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i = self->motion_sense; // scale to range of 0-257
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MotionSense = i << 48 | i << 32 | i << 16 | i;
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i = 0xffffffff - 256;
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QW256B = i << 48 | i << 32 | i << 16 | i; // save a couple instr on PMINSW instruct.
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LoopCtr = size / 8 - 1; // there are LineLength / 8 qwords per line but do 1 less, adj at end of loop
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// For ease of reading, the comments below assume that we're operating on an odd
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// field (i.e., that InfoIsOdd is true). Assume the obvious for even lines..
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__asm__ __volatile__ (
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// save ebx (-fPIC)
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MOVX " %%" XBX ", %[oldbx]\n\t"
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MOVX " %[L1], %%" XAX "\n\t"
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LEAX " 8(%%" XAX "), %%" XBX "\n\t" // next qword needed by DJR
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MOVX " %[L3], %%" XCX "\n\t"
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SUBX " %%" XAX ", %%" XCX "\n\t" // carry L3 addr as an offset
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MOVX " %[L2P], %%" XDX "\n\t"
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MOVX " %[L2], %%" XSI "\n\t"
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MOVX " %[Dest], %%" XDI "\n\t" // DL1 if Odd or DL2 if Even
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".align 8\n\t"
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"1:\n\t"
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"movq (%%" XSI "), %%mm0\n\t" // L2 - the newest weave pixel value
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"movq (%%" XAX "), %%mm1\n\t" // L1 - the top pixel
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"movq (%%" XDX "), %%mm2\n\t" // L2P - the prev weave pixel
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"movq (%%" XAX ", %%" XCX "), %%mm3\n\t" // L3, next odd row
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"movq %%mm1, %%mm6\n\t" // L1 - get simple single pixel interp
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// pavgb mm6, mm3 // use macro below
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V_PAVGB ("%%mm6", "%%mm3", "%%mm4", "%[ShiftMask]")
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// DJR - Diagonal Jaggie Reduction
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// In the event that we are going to use an average (Bob) pixel we do not want a jagged
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// stair step effect. To combat this we avg in the 2 horizontally adjacen pixels into the
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// interpolated Bob mix. This will do horizontal smoothing for only the Bob'd pixels.
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"movq %[LastAvg], %%mm4\n\t" // the bob value from prev qword in row
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"movq %%mm6, %[LastAvg]\n\t" // save for next pass
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"psrlq $48, %%mm4\n\t" // right justify 1 pixel
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"movq %%mm6, %%mm7\n\t" // copy of simple bob pixel
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"psllq $16, %%mm7\n\t" // left justify 3 pixels
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"por %%mm7, %%mm4\n\t" // and combine
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"movq (%%" XBX "), %%mm5\n\t" // next horiz qword from L1
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// pavgb mm5, qword ptr[ebx+ecx] // next horiz qword from L3, use macro below
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V_PAVGB ("%%mm5", "(%%" XBX ",%%" XCX ")", "%%mm7", "%[ShiftMask]")
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"psllq $48, %%mm5\n\t" // left just 1 pixel
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"movq %%mm6, %%mm7\n\t" // another copy of simple bob pixel
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"psrlq $16, %%mm7\n\t" // right just 3 pixels
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"por %%mm7, %%mm5\n\t" // combine
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// pavgb mm4, mm5 // avg of forward and prev by 1 pixel, use macro
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V_PAVGB ("%%mm4", "%%mm5", "%%mm5", "%[ShiftMask]") // mm5 gets modified if MMX
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// pavgb mm6, mm4 // avg of center and surround interp vals, use macro
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V_PAVGB ("%%mm6", "%%mm4", "%%mm7", "%[ShiftMask]")
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// Don't do any more averaging than needed for mmx. It hurts performance and causes rounding errors.
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#ifndef IS_MMX
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// pavgb mm4, mm6 // 1/4 center, 3/4 adjacent
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V_PAVGB ("%%mm4", "%%mm6", "%%mm7", "%[ShiftMask]")
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// pavgb mm6, mm4 // 3/8 center, 5/8 adjacent
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V_PAVGB ("%%mm6", "%%mm4", "%%mm7", "%[ShiftMask]")
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#endif
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// get abs value of possible L2 comb
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"movq %%mm6, %%mm4\n\t" // work copy of interp val
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"movq %%mm2, %%mm7\n\t" // L2
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"psubusb %%mm4, %%mm7\n\t" // L2 - avg
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"movq %%mm4, %%mm5\n\t" // avg
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"psubusb %%mm2, %%mm5\n\t" // avg - L2
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"por %%mm7, %%mm5\n\t" // abs(avg-L2)
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// get abs value of possible L2P comb
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"movq %%mm0, %%mm7\n\t" // L2P
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"psubusb %%mm4, %%mm7\n\t" // L2P - avg
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"psubusb %%mm0, %%mm4\n\t" // avg - L2P
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"por %%mm7, %%mm4\n\t" // abs(avg-L2P)
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// use L2 or L2P depending upon which makes smaller comb
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"psubusb %%mm5, %%mm4\n\t" // see if it goes to zero
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"psubusb %%mm5, %%mm5\n\t" // 0
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"pcmpeqb %%mm5, %%mm4\n\t" // if (mm4=0) then FF else 0
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"pcmpeqb %%mm4, %%mm5\n\t" // opposite of mm4
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// if Comb(L2P) <= Comb(L2) then mm4=ff, mm5=0 else mm4=0, mm5 = 55
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"pand %%mm2, %%mm5\n\t" // use L2 if mm5 == ff, else 0
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"pand %%mm0, %%mm4\n\t" // use L2P if mm4 = ff, else 0
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"por %%mm5, %%mm4\n\t" // may the best win
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// Inventory: at this point we have the following values:
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// mm0 = L2P (or L2)
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// mm1 = L1
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// mm2 = L2 (or L2P)
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// mm3 = L3
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// mm4 = the best of L2,L2P weave pixel, base upon comb
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// mm6 = the avg interpolated value, if we need to use it
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// Let's measure movement, as how much the weave pixel has changed
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"movq %%mm2, %%mm7\n\t"
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"psubusb %%mm0, %%mm2\n\t"
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"psubusb %%mm7, %%mm0\n\t"
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"por %%mm2, %%mm0\n\t" // abs value of change, used later
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// Now lets clip our chosen value to be not outside of the range
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// of the high/low range L1-L3 by more than MaxComb.
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// This allows some comb but limits the damages and also allows more
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// detail than a boring oversmoothed clip.
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"movq %%mm1, %%mm2\n\t" // copy L1
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// pmaxub mm2, mm3 // use macro
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V_PMAXUB ("%%mm2", "%%mm3") // now = Max(L1,L3)
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"movq %%mm1, %%mm5\n\t" // copy L1
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// pminub mm5, mm3 // now = Min(L1,L3), use macro
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V_PMINUB ("%%mm5", "%%mm3", "%%mm7")
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// allow the value to be above the high or below the low by amt of MaxComb
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"psubusb %[MaxComb], %%mm5\n\t" // lower min by diff
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"paddusb %[MaxComb], %%mm2\n\t" // increase max by diff
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// pmaxub mm4, mm5 // now = Max(best,Min(L1,L3) use macro
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V_PMAXUB ("%%mm4", "%%mm5")
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// pminub mm4, mm2 // now = Min( Max(best, Min(L1,L3), L2 )=L2 clipped
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V_PMINUB ("%%mm4", "%%mm2", "%%mm7")
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// Blend weave pixel with bob pixel, depending on motion val in mm0
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"psubusb %[MotionThreshold], %%mm0\n\t" // test Threshold, clear chroma change >>>??
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"pmullw %[MotionSense], %%mm0\n\t" // mul by user factor, keep low 16 bits
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"movq %[QW256], %%mm7\n\t"
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#ifdef IS_MMXEXT
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"pminsw %%mm7, %%mm0\n\t" // max = 256
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#else
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"paddusw %[QW256B], %%mm0\n\t" // add, may sat at fff..
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"psubusw %[QW256B], %%mm0\n\t" // now = Min(L1,256)
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#endif
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"psubusw %%mm0, %%mm7\n\t" // so the 2 sum to 256, weighted avg
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"movq %%mm4, %%mm2\n\t" // save weave chroma info before trashing
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"pand %[YMask], %%mm4\n\t" // keep only luma from calc'd value
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"pmullw %%mm7, %%mm4\n\t" // use more weave for less motion
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"pand %[YMask], %%mm6\n\t" // keep only luma from calc'd value
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"pmullw %%mm0, %%mm6\n\t" // use more bob for large motion
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"paddusw %%mm6, %%mm4\n\t" // combine
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"psrlw $8, %%mm4\n\t" // div by 256 to get weighted avg
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// chroma comes from weave pixel
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"pand %[UVMask], %%mm2\n\t" // keep chroma
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"por %%mm4, %%mm2\n\t" // and combine
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V_MOVNTQ ("(%%" XDI ")", "%%mm2") // move in our clipped best, use macro
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// bump ptrs and loop
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LEAX " 8(%%" XAX "), %%" XAX "\n\t"
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LEAX " 8(%%" XBX "), %%" XBX "\n\t"
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LEAX " 8(%%" XDX "), %%" XDX "\n\t"
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LEAX " 8(%%" XDI "), %%" XDI "\n\t"
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LEAX " 8(%%" XSI "), %%" XSI "\n\t"
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DECX " %[LoopCtr]\n\t"
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"jg 1b\n\t" // loop if not to last line
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// note P-III default assumes backward branches taken
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"jl 1f\n\t" // done
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MOVX " %%" XAX ", %%" XBX "\n\t" // sharpness lookahead 1 byte only, be wrong on 1
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"jmp 1b\n\t"
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"1:\n\t"
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MOVX " %[oldbx], %%" XBX "\n\t"
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"emms\n\t": /* no outputs */
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:[LastAvg] "m" (LastAvg),
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[L1] "m" (L1),
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[L3] "m" (L3),
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[L2P] "m" (L2P),
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[L2] "m" (L2),
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[Dest] "m" (Dest),
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[ShiftMask] "m" (ShiftMask),
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[MaxComb] "m" (MaxComb),
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[MotionThreshold] "m" (MotionThreshold),
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[MotionSense] "m" (MotionSense),
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[QW256B] "m" (QW256B),
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[YMask] "m" (YMask),
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[UVMask] "m" (UVMask),
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[LoopCtr] "m" (LoopCtr),
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[QW256] "m" (QW256),
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[oldbx] "m" (oldbx)
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: XAX, XCX, XDX, XSI, XDI,
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"st", "st(1)", "st(2)", "st(3)", "st(4)", "st(5)", "st(6)", "st(7)",
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#ifdef __MMX__
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"mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7",
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#endif
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"memory", "cc");
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}
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