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Diffstat (limited to 'gst/deinterlace/tvtime/greedyh.asm')
| -rw-r--r-- | gst/deinterlace/tvtime/greedyh.asm | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/gst/deinterlace/tvtime/greedyh.asm b/gst/deinterlace/tvtime/greedyh.asm new file mode 100644 index 00000000..86e97c58 --- /dev/null +++ b/gst/deinterlace/tvtime/greedyh.asm @@ -0,0 +1,250 @@ +/* + * + * GStreamer + * Copyright (c) 2001 Tom Barry. All rights reserved. + * Copyright (C) 2008 Sebastian Dröge <slomo@collabora.co.uk> + * + * 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" + +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"); +} |