/* * * GStreamer * Copyright (c) 2001 Tom Barry. All rights reserved. * Copyright (C) 2008 Sebastian Dröge * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* * Relicensed for GStreamer from GPL to LGPL with permit from Tom Barry. * See: http://bugzilla.gnome.org/show_bug.cgi?id=163578 */ #include "x86-64_macros.inc" static void FUNCT_NAME (GstDeinterlaceMethodGreedyH *self, uint8_t * L1, uint8_t * L2, uint8_t * L3, uint8_t * L2P, uint8_t * Dest, int size) { // in tight loop some vars are accessed faster in local storage int64_t YMask = 0x00ff00ff00ff00ffull; // to keep only luma int64_t UVMask = 0xff00ff00ff00ff00ull; // to keep only chroma int64_t ShiftMask = 0xfefefefefefefefeull; // to avoid shifting chroma to luma int64_t QW256 = 0x0100010001000100ull; // 4 256's int64_t MaxComb; int64_t MotionThreshold; int64_t MotionSense; int64_t i; long LoopCtr; long oldbx; int64_t QW256B; int64_t LastAvg = 0; //interp value from left qword // FIXME: Use C implementation if the width is not a multiple of 4 // Do something more optimal later if (size % 8 != 0) greedyDScaler_C (self, L1, L2, L3, L2P, Dest, size); // Set up our two parms that are actually evaluated for each pixel i = self->max_comb; MaxComb = i << 56 | i << 48 | i << 40 | i << 32 | i << 24 | i << 16 | i << 8 | i; i = self->motion_threshold; // scale to range of 0-257 MotionThreshold = i << 48 | i << 32 | i << 16 | i | UVMask; i = self->motion_sense; // scale to range of 0-257 MotionSense = i << 48 | i << 32 | i << 16 | i; i = 0xffffffff - 256; QW256B = i << 48 | i << 32 | i << 16 | i; // save a couple instr on PMINSW instruct. LoopCtr = size / 8 - 1; // there are LineLength / 8 qwords per line but do 1 less, adj at end of loop // For ease of reading, the comments below assume that we're operating on an odd // field (i.e., that InfoIsOdd is true). Assume the obvious for even lines.. __asm__ __volatile__ ( // save ebx (-fPIC) MOVX " %%" XBX ", %[oldbx]\n\t" MOVX " %[L1], %%" XAX "\n\t" LEAX " 8(%%" XAX "), %%" XBX "\n\t" // next qword needed by DJR MOVX " %[L3], %%" XCX "\n\t" SUBX " %%" XAX ", %%" XCX "\n\t" // carry L3 addr as an offset MOVX " %[L2P], %%" XDX "\n\t" MOVX " %[L2], %%" XSI "\n\t" MOVX " %[Dest], %%" XDI "\n\t" // DL1 if Odd or DL2 if Even ".align 8\n\t" "1:\n\t" "movq (%%" XSI "), %%mm0\n\t" // L2 - the newest weave pixel value "movq (%%" XAX "), %%mm1\n\t" // L1 - the top pixel "movq (%%" XDX "), %%mm2\n\t" // L2P - the prev weave pixel "movq (%%" XAX ", %%" XCX "), %%mm3\n\t" // L3, next odd row "movq %%mm1, %%mm6\n\t" // L1 - get simple single pixel interp // pavgb mm6, mm3 // use macro below V_PAVGB ("%%mm6", "%%mm3", "%%mm4", "%[ShiftMask]") // DJR - Diagonal Jaggie Reduction // In the event that we are going to use an average (Bob) pixel we do not want a jagged // stair step effect. To combat this we avg in the 2 horizontally adjacen pixels into the // interpolated Bob mix. This will do horizontal smoothing for only the Bob'd pixels. "movq %[LastAvg], %%mm4\n\t" // the bob value from prev qword in row "movq %%mm6, %[LastAvg]\n\t" // save for next pass "psrlq $48, %%mm4\n\t" // right justify 1 pixel "movq %%mm6, %%mm7\n\t" // copy of simple bob pixel "psllq $16, %%mm7\n\t" // left justify 3 pixels "por %%mm7, %%mm4\n\t" // and combine "movq (%%" XBX "), %%mm5\n\t" // next horiz qword from L1 // pavgb mm5, qword ptr[ebx+ecx] // next horiz qword from L3, use macro below V_PAVGB ("%%mm5", "(%%" XBX ",%%" XCX ")", "%%mm7", "%[ShiftMask]") "psllq $48, %%mm5\n\t" // left just 1 pixel "movq %%mm6, %%mm7\n\t" // another copy of simple bob pixel "psrlq $16, %%mm7\n\t" // right just 3 pixels "por %%mm7, %%mm5\n\t" // combine // pavgb mm4, mm5 // avg of forward and prev by 1 pixel, use macro V_PAVGB ("%%mm4", "%%mm5", "%%mm5", "%[ShiftMask]") // mm5 gets modified if MMX // pavgb mm6, mm4 // avg of center and surround interp vals, use macro V_PAVGB ("%%mm6", "%%mm4", "%%mm7", "%[ShiftMask]") // Don't do any more averaging than needed for mmx. It hurts performance and causes rounding errors. #ifndef IS_MMX // pavgb mm4, mm6 // 1/4 center, 3/4 adjacent V_PAVGB ("%%mm4", "%%mm6", "%%mm7", "%[ShiftMask]") // pavgb mm6, mm4 // 3/8 center, 5/8 adjacent V_PAVGB ("%%mm6", "%%mm4", "%%mm7", "%[ShiftMask]") #endif // get abs value of possible L2 comb "movq %%mm6, %%mm4\n\t" // work copy of interp val "movq %%mm2, %%mm7\n\t" // L2 "psubusb %%mm4, %%mm7\n\t" // L2 - avg "movq %%mm4, %%mm5\n\t" // avg "psubusb %%mm2, %%mm5\n\t" // avg - L2 "por %%mm7, %%mm5\n\t" // abs(avg-L2) // get abs value of possible L2P comb "movq %%mm0, %%mm7\n\t" // L2P "psubusb %%mm4, %%mm7\n\t" // L2P - avg "psubusb %%mm0, %%mm4\n\t" // avg - L2P "por %%mm7, %%mm4\n\t" // abs(avg-L2P) // use L2 or L2P depending upon which makes smaller comb "psubusb %%mm5, %%mm4\n\t" // see if it goes to zero "psubusb %%mm5, %%mm5\n\t" // 0 "pcmpeqb %%mm5, %%mm4\n\t" // if (mm4=0) then FF else 0 "pcmpeqb %%mm4, %%mm5\n\t" // opposite of mm4 // if Comb(L2P) <= Comb(L2) then mm4=ff, mm5=0 else mm4=0, mm5 = 55 "pand %%mm2, %%mm5\n\t" // use L2 if mm5 == ff, else 0 "pand %%mm0, %%mm4\n\t" // use L2P if mm4 = ff, else 0 "por %%mm5, %%mm4\n\t" // may the best win // Inventory: at this point we have the following values: // mm0 = L2P (or L2) // mm1 = L1 // mm2 = L2 (or L2P) // mm3 = L3 // mm4 = the best of L2,L2P weave pixel, base upon comb // mm6 = the avg interpolated value, if we need to use it // Let's measure movement, as how much the weave pixel has changed "movq %%mm2, %%mm7\n\t" "psubusb %%mm0, %%mm2\n\t" "psubusb %%mm7, %%mm0\n\t" "por %%mm2, %%mm0\n\t" // abs value of change, used later // Now lets clip our chosen value to be not outside of the range // of the high/low range L1-L3 by more than MaxComb. // This allows some comb but limits the damages and also allows more // detail than a boring oversmoothed clip. "movq %%mm1, %%mm2\n\t" // copy L1 // pmaxub mm2, mm3 // use macro V_PMAXUB ("%%mm2", "%%mm3") // now = Max(L1,L3) "movq %%mm1, %%mm5\n\t" // copy L1 // pminub mm5, mm3 // now = Min(L1,L3), use macro V_PMINUB ("%%mm5", "%%mm3", "%%mm7") // allow the value to be above the high or below the low by amt of MaxComb "psubusb %[MaxComb], %%mm5\n\t" // lower min by diff "paddusb %[MaxComb], %%mm2\n\t" // increase max by diff // pmaxub mm4, mm5 // now = Max(best,Min(L1,L3) use macro V_PMAXUB ("%%mm4", "%%mm5") // pminub mm4, mm2 // now = Min( Max(best, Min(L1,L3), L2 )=L2 clipped V_PMINUB ("%%mm4", "%%mm2", "%%mm7") // Blend weave pixel with bob pixel, depending on motion val in mm0 "psubusb %[MotionThreshold], %%mm0\n\t" // test Threshold, clear chroma change >>>?? "pmullw %[MotionSense], %%mm0\n\t" // mul by user factor, keep low 16 bits "movq %[QW256], %%mm7\n\t" #ifdef IS_MMXEXT "pminsw %%mm7, %%mm0\n\t" // max = 256 #else "paddusw %[QW256B], %%mm0\n\t" // add, may sat at fff.. "psubusw %[QW256B], %%mm0\n\t" // now = Min(L1,256) #endif "psubusw %%mm0, %%mm7\n\t" // so the 2 sum to 256, weighted avg "movq %%mm4, %%mm2\n\t" // save weave chroma info before trashing "pand %[YMask], %%mm4\n\t" // keep only luma from calc'd value "pmullw %%mm7, %%mm4\n\t" // use more weave for less motion "pand %[YMask], %%mm6\n\t" // keep only luma from calc'd value "pmullw %%mm0, %%mm6\n\t" // use more bob for large motion "paddusw %%mm6, %%mm4\n\t" // combine "psrlw $8, %%mm4\n\t" // div by 256 to get weighted avg // chroma comes from weave pixel "pand %[UVMask], %%mm2\n\t" // keep chroma "por %%mm4, %%mm2\n\t" // and combine V_MOVNTQ ("(%%" XDI ")", "%%mm2") // move in our clipped best, use macro // bump ptrs and loop LEAX " 8(%%" XAX "), %%" XAX "\n\t" LEAX " 8(%%" XBX "), %%" XBX "\n\t" LEAX " 8(%%" XDX "), %%" XDX "\n\t" LEAX " 8(%%" XDI "), %%" XDI "\n\t" LEAX " 8(%%" XSI "), %%" XSI "\n\t" DECX " %[LoopCtr]\n\t" "jg 1b\n\t" // loop if not to last line // note P-III default assumes backward branches taken "jl 1f\n\t" // done MOVX " %%" XAX ", %%" XBX "\n\t" // sharpness lookahead 1 byte only, be wrong on 1 "jmp 1b\n\t" "1:\n\t" MOVX " %[oldbx], %%" XBX "\n\t" "emms\n\t": /* no outputs */ :[LastAvg] "m" (LastAvg), [L1] "m" (L1), [L3] "m" (L3), [L2P] "m" (L2P), [L2] "m" (L2), [Dest] "m" (Dest), [ShiftMask] "m" (ShiftMask), [MaxComb] "m" (MaxComb), [MotionThreshold] "m" (MotionThreshold), [MotionSense] "m" (MotionSense), [QW256B] "m" (QW256B), [YMask] "m" (YMask), [UVMask] "m" (UVMask), [LoopCtr] "m" (LoopCtr), [QW256] "m" (QW256), [oldbx] "m" (oldbx) : XAX, XCX, XDX, XSI, XDI, "st", "st(1)", "st(2)", "st(3)", "st(4)", "st(5)", "st(6)", "st(7)", #ifdef __MMX__ "mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7", #endif "memory", "cc"); }