1751 lines
48 KiB
C++
1751 lines
48 KiB
C++
/*
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* INTEL Corporation Proprietary Information
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*
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*
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* Copyright (c) 1996 Intel Corporation.
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* All rights reserved.
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*/
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/*
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* jidctfst.c
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* Copyright (C) 1994-1996, Thomas G. Lane.
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* This file is part of the Independent JPEG Group's software.
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* For conditions of distribution and use, see the accompanying README file.
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* This file contains a fast, not so accurate integer implementation of the
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* inverse DCT (Discrete Cosine Transform). In the IJG code, this routine
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* must also perform dequantization of the input coefficients.
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* A 2-D IDCT can be done by 1-D IDCT on each column followed by 1-D IDCT
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* on each row (or vice versa, but it's more convenient to emit a row at
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* a time). Direct algorithms are also available, but they are much more
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* complex and seem not to be any faster when reduced to code.
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* This implementation is based on Arai, Agui, and Nakajima's algorithm for
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* scaled DCT. Their original paper (Trans. IEICE E-71(11):1095) is in
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* Japanese, but the algorithm is described in the Pennebaker & Mitchell
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* JPEG textbook (see REFERENCES section in file README). The following code
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* is based directly on figure 4-8 in P&M.
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* While an 8-point DCT cannot be done in less than 11 multiplies, it is
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* possible to arrange the computation so that many of the multiplies are
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* simple scalings of the final outputs. These multiplies can then be
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* folded into the multiplications or divisions by the JPEG quantization
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* table entries. The AA&N method leaves only 5 multiplies and 29 adds
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* to be done in the DCT itself.
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* The primary disadvantage of this method is that with fixed-point math,
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* accuracy is lost due to imprecise representation of the scaled
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* quantization values. The smaller the quantization table entry, the less
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* precise the scaled value, so this implementation does worse with high-
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* quality-setting files than with low-quality ones.
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*/
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#define JPEG_INTERNALS
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#include "jinclude.h"
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#include "jpeglib.h"
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#include "jdct.h" /* Private declarations for DCT subsystem */
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#ifdef DCT_IFAST_SUPPORTED
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/*
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* This module is specialized to the case DCTSIZE = 8.
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*/
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#if DCTSIZE != 8
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Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */
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#endif
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/* Scaling decisions are generally the same as in the LL&M algorithm;
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* see jidctint.c for more details. However, we choose to descale
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* (right shift) multiplication products as soon as they are formed,
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* rather than carrying additional fractional bits into subsequent additions.
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* This compromises accuracy slightly, but it lets us save a few shifts.
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* More importantly, 16-bit arithmetic is then adequate (for 8-bit samples)
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* everywhere except in the multiplications proper; this saves a good deal
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* of work on 16-bit-int machines.
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* The dequantized coefficients are not integers because the AA&N scaling
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* factors have been incorporated. We represent them scaled up by PASS1_BITS,
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* so that the first and second IDCT rounds have the same input scaling.
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* For 8-bit JSAMPLEs, we choose IFAST_SCALE_BITS = PASS1_BITS so as to
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* avoid a descaling shift; this compromises accuracy rather drastically
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* for small quantization table entries, but it saves a lot of shifts.
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* For 12-bit JSAMPLEs, there's no hope of using 16x16 multiplies anyway,
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* so we use a much larger scaling factor to preserve accuracy.
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* A final compromise is to represent the multiplicative constants to only
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* 8 fractional bits, rather than 13. This saves some shifting work on some
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* machines, and may also reduce the cost of multiplication (since there
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* are fewer one-bits in the constants).
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*/
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#if BITS_IN_JSAMPLE == 8
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#define CONST_BITS 8
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#define PASS1_BITS 2
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#else
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#define CONST_BITS 8
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#define PASS1_BITS 1 /* lose a little precision to avoid overflow */
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#endif
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/* Some C compilers fail to reduce "FIX(constant)" at compile time, thus
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* causing a lot of useless floating-point operations at run time.
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* To get around this we use the following pre-calculated constants.
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* If you change CONST_BITS you may want to add appropriate values.
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* (With a reasonable C compiler, you can just rely on the FIX() macro...)
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*/
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#if CONST_BITS == 8
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#define FIX_1_082392200 ((INT32) 277) /* FIX(1.082392200) */
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#define FIX_1_414213562 ((INT32) 362) /* FIX(1.414213562) */
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#define FIX_1_847759065 ((INT32) 473) /* FIX(1.847759065) */
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#define FIX_2_613125930 ((INT32) 669) /* FIX(2.613125930) */
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#else
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#define FIX_1_082392200 FIX(1.082392200)
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#define FIX_1_414213562 FIX(1.414213562)
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#define FIX_1_847759065 FIX(1.847759065)
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#define FIX_2_613125930 FIX(2.613125930)
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#endif
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/* We can gain a little more speed, with a further compromise in accuracy,
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* by omitting the addition in a descaling shift. This yields an incorrectly
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* rounded result half the time...
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*/
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#ifndef USE_ACCURATE_ROUNDING
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#undef DESCALE
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#define DESCALE(x,n) RIGHT_SHIFT(x, n)
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#endif
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//#define DESCALE(x,n) RIGHT_SHIFT((x) + (ONE << ((n)-1)), n)
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/* Multiply a DCTELEM variable by an INT32 constant, and immediately
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* descale to yield a DCTELEM result.
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*/
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//#define MULTIPLY(var,const) ((DCTELEM) DESCALE((var) * (const), CONST_BITS))
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#define MULTIPLY(var,const) ((DCTELEM) ((var) * (const)))
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/* Dequantize a coefficient by multiplying it by the multiplier-table
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* entry; produce a DCTELEM result. For 8-bit data a 16x16->16
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* multiplication will do. For 12-bit data, the multiplier table is
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* declared INT32, so a 32-bit multiply will be used.
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*/
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#if BITS_IN_JSAMPLE == 8
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//#define DEQUANTIZE(coef,quantval) (((IFAST_MULT_TYPE) (coef)) * (quantval))
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#define DEQUANTIZE(coef,quantval) (((coef)) * (quantval))
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#else
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#define DEQUANTIZE(coef,quantval) \
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DESCALE((coef)*(quantval), IFAST_SCALE_BITS-PASS1_BITS)
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#endif
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/* Like DESCALE, but applies to a DCTELEM and produces an int.
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* We assume that int right shift is unsigned if INT32 right shift is.
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*/
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#ifdef RIGHT_SHIFT_IS_UNSIGNED
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#define ISHIFT_TEMPS DCTELEM ishift_temp;
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#if BITS_IN_JSAMPLE == 8
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#define DCTELEMBITS 16 /* DCTELEM may be 16 or 32 bits */
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#else
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#define DCTELEMBITS 32 /* DCTELEM must be 32 bits */
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#endif
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#define IRIGHT_SHIFT(x,shft) \
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((ishift_temp = (x)) < 0 ? \
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(ishift_temp >> (shft)) | ((~((DCTELEM) 0)) << (DCTELEMBITS-(shft))) : \
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(ishift_temp >> (shft)))
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#else
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#define ISHIFT_TEMPS
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#define IRIGHT_SHIFT(x,shft) ((x) >> (shft))
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#endif
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#ifdef USE_ACCURATE_ROUNDING
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#define IDESCALE(x,n) ((int) IRIGHT_SHIFT((x) + (1 << ((n)-1)), n))
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#else
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#define IDESCALE(x,n) ((int) IRIGHT_SHIFT(x, n))
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#endif
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static const __int64 x5a825a825a825a82 = 0x0000016a0000016a;
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static const __int64 x539f539f539f539f = 0x0000fd630000fd63;
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static const __int64 x4546454645464546 = 0x0000011500000115;
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static const __int64 x61f861f861f861f8 = 0x000001d9000001d9;
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static const __int64 const_mask = 0x03ff03ff03ff03ff;
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static const __int64 const_zero = 0x0000000000000000;
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/*
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* Perform dequantization and inverse DCT on one block of coefficients.
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*/
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GLOBAL(void)
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midct8x8aan(JCOEFPTR coef_block, short* wsptr, short* quantptr,
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JSAMPARRAY output_buf, JDIMENSION output_col, JSAMPLE* range_limit)
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{
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__int64 scratch3, scratch5, scratch7;
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// do the 2-Dal idct and store the corresponding results
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// from the range_limit array
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__asm {
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mov ebx, coef_block; source coeff
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mov esi, wsptr; temp results
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mov edi, quantptr; quant factors
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movq mm0, [ebx + 8 * 12]; V12
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pmullw mm0, [edi + 8 * 12]
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movq mm1, [ebx + 8 * 4]; V4
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pmullw mm1, [edi + 8 * 4]
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movq mm3, [ebx + 8 * 0]; V0
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pmullw mm3, [edi + 8 * 0]
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movq mm5, [ebx + 8 * 8]; V8
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movq mm2, mm1; duplicate V4
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pmullw mm5, [edi + 8 * 8]
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psubw mm1, mm0; V16(s1)
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movq mm7, x5a825a825a825a82; 23170->V18(s3)
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; ***PackMulW
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movq mm6, mm1
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punpcklwd mm1, const_zero
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paddw mm2, mm0; V17
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pmaddwd mm1, mm7
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movq mm0, mm2; duplicate V17
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punpckhwd mm6, const_zero
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movq mm4, mm3; duplicate V0
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pmaddwd mm6, mm7
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paddw mm3, mm5; V19
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psrad mm1, 8
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psubw mm4, mm5; V20; mm5 free
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psrad mm6, 8; mm6 = (s1)
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packssdw mm1, mm6
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; *
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movq mm6, mm3; duplicate t74 = t81
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psubw mm1, mm0; V21; mm0 free
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paddw mm3, mm2; V22
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movq mm5, mm1; duplicate V21
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paddw mm1, mm4; V23
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movq[esi + 8 * 4], mm3; V22
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psubw mm4, mm5; V24; mm5 free
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movq[esi + 8 * 12], mm1; V23
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psubw mm6, mm2; V25; mm2 free
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movq[esi + 8 * 0], mm4; V24
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; keep mm6 alive all along the next block
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movq mm7, [ebx + 8 * 10]; V10
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pmullw mm7, [edi + 8 * 10]
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movq mm0, [ebx + 8 * 6]; V6
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pmullw mm0, [edi + 8 * 6]
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movq mm3, mm7; duplicate V10
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movq mm5, [ebx + 8 * 2]; V2
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pmullw mm5, [edi + 8 * 2]
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psubw mm7, mm0; V26(s1 / 7)
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movq mm4, [ebx + 8 * 14]; V14
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pmullw mm4, [edi + 8 * 14]
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paddw mm3, mm0; V29; free mm0
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movq mm1, x539f539f539f539f; 23170->V18(scratch3)
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; mm0 = s5,
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; ***PackMulW
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movq scratch7, mm7
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movq mm2, mm7
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punpcklwd mm7, const_zero
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movq mm0, mm5; duplicate V2
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pmaddwd mm7, mm1
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paddw mm5, mm4; V27
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punpckhwd mm2, const_zero
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psubw mm0, mm4; (s1) for next; V28; free mm4
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pmaddwd mm2, mm1
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movq mm4, mm0
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punpcklwd mm0, const_zero
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psrad mm7, 8
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psrad mm2, 8; mm2 = scratch1
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movq mm1, mm4; duplicate V28
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punpckhwd mm4, const_zero
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packssdw mm7, mm2
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movq mm2, x4546454645464546; 23170->V18
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; *
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; ***PackMulW
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pmaddwd mm0, mm2
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pmaddwd mm4, mm2
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psrad mm0, 8
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movq mm2, x61f861f861f861f8; 23170->V18
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psrad mm4, 8
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packssdw mm0, mm4
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movq mm4, mm1
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movq mm1, scratch7
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; *
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movq scratch5, mm0
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paddw mm1, mm4; V32; free mm4
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; ***PackMulW
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movq mm0, mm1
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punpcklwd mm1, const_zero
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movq mm4, mm5; duplicate t90 = t93
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pmaddwd mm1, mm2
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paddw mm5, mm3; V31
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punpckhwd mm0, const_zero
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psubw mm4, mm3; V30; free mm3
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movq mm3, x5a825a825a825a82; 23170->V18
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pmaddwd mm0, mm2
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psrad mm1, 8
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movq mm2, mm4; make a copy of mm4
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punpcklwd mm4, const_zero
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psrad mm0, 8
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pmaddwd mm4, mm3
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packssdw mm1, mm0
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; *
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; ***PackMulW
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punpckhwd mm2, const_zero
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movq mm0, scratch5
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pmaddwd mm2, mm3
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psubw mm0, mm1; V38
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paddw mm1, mm7; V37; free mm7
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movq mm7, [esi + 8 * 4]; V22
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psrad mm4, 8
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psrad mm2, 8
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movq mm3, mm6; duplicate V25
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packssdw mm4, mm2
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psubw mm1, mm5; V39(mm5 still needed for next block)
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; *
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movq mm2, [esi + 8 * 12]; V23
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psubw mm4, mm1; V40
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paddw mm0, mm4; V41; free mm0
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psubw mm6, mm0; tm6
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paddw mm3, mm0; tm8; free mm1
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movq mm0, mm1; line added by Kumar
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movq mm1, mm7; duplicate V22
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movq[esi + 8 * 8], mm3; tm8; free mm3
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paddw mm7, mm5; tm0
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movq[esi + 8 * 6], mm6; tm6; free mm6
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psubw mm1, mm5; tm14; free mm5
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movq mm6, [esi + 8 * 0]; V24
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movq mm3, mm2; duplicate t117 = t125
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movq[esi + 8 * 0], mm7; tm0; free mm7
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paddw mm2, mm0; tm2
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movq[esi + 8 * 14], mm1; tm14; free mm1
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psubw mm3, mm0; tm12; free mm0
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movq[esi + 8 * 2], mm2; tm2; free mm2
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movq mm0, mm6; duplicate t119 = t123
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movq[esi + 8 * 12], mm3; tm12; free mm3
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paddw mm6, mm4; tm4
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movq mm1, [ebx + 8 * 5]; V5
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psubw mm0, mm4; tm10; free mm4
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pmullw mm1, [edi + 8 * 5]
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movq[esi + 8 * 4], mm6; tm4; free mm6
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movq[esi + 8 * 10], mm0; tm10; free mm0
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; column 1: even part
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; use V5, V13, V1, V9 to produce V56..V59
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movq mm7, [ebx + 8 * 13]; V13
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movq mm2, mm1; duplicate t128 = t130
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pmullw mm7, [edi + 8 * 13]
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movq mm3, [ebx + 8 * 1]; V1
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pmullw mm3, [edi + 8 * 1]
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movq mm5, [ebx + 8 * 9]; V9
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psubw mm1, mm7; V50
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pmullw mm5, [edi + 8 * 9]
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paddw mm2, mm7; V51
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movq mm7, x5a825a825a825a82; 23170->V18
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; ***PackMulW
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movq mm4, mm1
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punpcklwd mm1, const_zero
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movq mm6, mm2; duplicate V51
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pmaddwd mm1, mm7
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punpckhwd mm4, const_zero
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movq mm0, [ebx + 8 * 11]; V11
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pmaddwd mm4, mm7
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pmullw mm0, [edi + 8 * 11]
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psrad mm1, 8
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psrad mm4, 8
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packssdw mm1, mm4
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movq mm4, mm3; duplicate V1
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; *
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paddw mm3, mm5; V53
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psubw mm4, mm5; V54; mm5 free
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movq mm7, mm3; duplicate V53
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psubw mm1, mm6; V55; mm6 free
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movq mm6, [ebx + 8 * 7]; V7
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paddw mm3, mm2; V56
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movq mm5, mm4; duplicate t140 = t142
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paddw mm4, mm1; V57
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movq[esi + 8 * 5], mm3; V56
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psubw mm5, mm1; V58; mm1 free
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pmullw mm6, [edi + 8 * 7]
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psubw mm7, mm2; V59; mm2 free
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movq[esi + 8 * 13], mm4; V57
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movq mm3, mm0; duplicate V11
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; keep mm7 alive all along the next block
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movq[esi + 8 * 9], mm5; V58
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paddw mm0, mm6; V63
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movq mm4, [ebx + 8 * 15]; V15
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psubw mm3, mm6; V60; free mm6
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pmullw mm4, [edi + 8 * 15]
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; note that V15 computation has a correction step :
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; this is a 'magic' constant that rebiases the results to be closer to the expected result
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; this magic constant can be refined to reduce the error even more
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; by doing the correction step in a later stage when the number is actually multiplied by 16
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movq mm1, mm3; duplicate V60
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movq mm5, [ebx + 8 * 3]; V3
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movq mm2, mm1
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pmullw mm5, [edi + 8 * 3]
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movq scratch7, mm7
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movq mm6, mm5; duplicate V3
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movq mm7, x539f539f539f539f; 23170->V18
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paddw mm5, mm4; V61
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; ***PackMulW
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punpcklwd mm1, const_zero
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psubw mm6, mm4; V62; free mm4
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pmaddwd mm1, mm7
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movq mm4, mm5; duplicate V61
|
|
|
|
punpckhwd mm2, const_zero
|
|
paddw mm5, mm0; V65->result
|
|
|
|
pmaddwd mm2, mm7
|
|
psubw mm4, mm0; V64; free mm0
|
|
|
|
movq scratch3, mm3
|
|
psrad mm1, 8
|
|
|
|
movq mm3, x5a825a825a825a82; 23170->V18
|
|
psrad mm2, 8
|
|
|
|
packssdw mm1, mm2
|
|
movq mm2, mm4
|
|
; *
|
|
|
|
; ***PackMulW
|
|
punpcklwd mm4, const_zero
|
|
|
|
pmaddwd mm4, mm3
|
|
|
|
punpckhwd mm2, const_zero
|
|
|
|
pmaddwd mm2, mm3
|
|
psrad mm4, 8
|
|
|
|
movq mm3, scratch3
|
|
|
|
movq mm0, x61f861f861f861f8; 23170->V18
|
|
paddw mm3, mm6; V66
|
|
|
|
psrad mm2, 8
|
|
movq mm7, mm3
|
|
|
|
packssdw mm4, mm2
|
|
movq mm2, mm5; duplicate V65
|
|
; *
|
|
|
|
; ***PackMulW
|
|
punpcklwd mm3, const_zero
|
|
|
|
pmaddwd mm3, mm0
|
|
|
|
punpckhwd mm7, const_zero
|
|
|
|
pmaddwd mm7, mm0
|
|
movq mm0, mm6
|
|
|
|
psrad mm3, 8
|
|
|
|
punpcklwd mm6, const_zero
|
|
|
|
psrad mm7, 8
|
|
|
|
packssdw mm3, mm7
|
|
; *
|
|
|
|
movq mm7, x4546454645464546; 23170->V18
|
|
|
|
; ***PackMulW
|
|
punpckhwd mm0, const_zero
|
|
pmaddwd mm6, mm7
|
|
|
|
pmaddwd mm0, mm7
|
|
psrad mm6, 8
|
|
|
|
psrad mm0, 8
|
|
|
|
packssdw mm6, mm0
|
|
; *
|
|
|
|
movq mm0, [esi + 8 * 5]; V56
|
|
psubw mm6, mm3; V72
|
|
|
|
paddw mm3, mm1; V71; free mm1
|
|
|
|
psubw mm3, mm2; V73; free mm2
|
|
movq mm1, mm0; duplicate t177 = t188
|
|
|
|
psubw mm4, mm3; V74
|
|
paddw mm0, mm5; tm1
|
|
|
|
movq mm2, [esi + 8 * 13]; V57
|
|
paddw mm6, mm4; V75
|
|
|
|
; location
|
|
; 5 - V56
|
|
; 13 - V57
|
|
; 9 - V58
|
|
; X - V59, mm7
|
|
; X - V65, mm5
|
|
; X - V73, mm6
|
|
; X - V74, mm4
|
|
; X - V75, mm3
|
|
; free mm0, mm1& mm2
|
|
|
|
movq mm7, scratch7; tm1; free mm0
|
|
psubw mm1, mm5; tm15; free mm5
|
|
|
|
; save the store as used directly in the transpose
|
|
movq[esi + 8 * 1], mm0; tm1; free mm0
|
|
movq mm5, mm7; duplicate t182 = t184
|
|
|
|
movq mm0, [esi + 8 * 9]; V58
|
|
psubw mm7, mm6; tm7
|
|
|
|
paddw mm5, mm6; tm9; free mm6
|
|
movq mm6, mm3
|
|
|
|
movq[esi + 8 * 7], mm7; tm7; free mm7
|
|
movq mm3, mm2; duplicate V57
|
|
|
|
psubw mm3, mm6; tm13
|
|
paddw mm2, mm6; tm3; free mm6
|
|
|
|
movq[esi + 8 * 3], mm2; tm3; free mm2
|
|
movq mm6, mm0; duplicate V58
|
|
|
|
paddw mm0, mm4; tm5
|
|
psubw mm6, mm4; tm11; free mm4
|
|
|
|
movq[esi + 8 * 5], mm0; tm5; free mm0
|
|
movq mm0, mm5; copy w4-- - 0, 1, 3, 5, 6
|
|
|
|
|
|
; transpose the bottom right quadrant(4X4) of the matrix
|
|
; -------- - -------- -
|
|
; | M1 | M2 | | M1'| M3' |
|
|
; -------- - -- > -------- -
|
|
; | M3 | M4 | | M2'| M4' |
|
|
; -------- - -------- -
|
|
|
|
punpcklwd mm5, mm6;
|
|
|
|
punpckhwd mm0, mm6; -- - 0, 1, 3, 5, 6
|
|
movq mm6, [esi + 8 * 0]; get w0 of top left quadrant
|
|
|
|
movq mm2, mm3; -- - 0, 1, 2, 3, 5, 6
|
|
punpcklwd mm3, mm1;
|
|
|
|
movq mm7, [esi + 8 * 2]; get w1 of top left quadrant
|
|
punpckhwd mm2, mm1; -- - 0, 2, 3, 5, 6, 7
|
|
|
|
movq mm4, mm5; -- - 0, 2, 3, 4, 5, 6, 7
|
|
punpckldq mm5, mm3; transposed w4
|
|
|
|
movq[esi + 8 * 9], mm5; store w4
|
|
punpckhdq mm4, mm3; transposed w5-- - 0, 2, 4, 6, 7
|
|
|
|
movq mm3, mm0; -- - 0, 2, 3, 4, 6, 7
|
|
punpckldq mm0, mm2; transposed w6
|
|
|
|
movq[esi + 8 * 11], mm4; store w5
|
|
punpckhdq mm3, mm2; transposed w7-- - 0, 3, 6, 7
|
|
|
|
movq[esi + 8 * 13], mm0; store w6-- - 3, 5, 6, 7
|
|
movq mm5, mm6; copy w0
|
|
|
|
movq[esi + 8 * 15], mm3; store w7-- - 5, 6, 7
|
|
punpcklwd mm6, mm7
|
|
|
|
; transpose the top left quadrant(4X4) of the matrix
|
|
|
|
punpckhwd mm5, mm7; -- - 5, 6, 7
|
|
movq mm7, [esi + 8 * 4]; get w2 of TL quadrant
|
|
|
|
movq mm4, [esi + 8 * 6]; get w3 of TL quadrant
|
|
movq mm3, mm7; copy w2-- - 3, 4, 5, 6, 7
|
|
|
|
movq mm2, mm6
|
|
punpcklwd mm7, mm4; -- - 2, 3, 4, 5, 6, 7
|
|
|
|
punpckhwd mm3, mm4; -- - 2, 3, 4, 5, 6, 7
|
|
movq mm4, mm5;
|
|
|
|
movq mm1, mm5
|
|
punpckldq mm6, mm7; -- - 1, 2, 3, 4, 5, 6, 7
|
|
|
|
movq[esi + 8 * 0], mm6; store w0 of TL quadrant
|
|
punpckhdq mm2, mm7; -- - 1, 2, 3, 4, 5, 6, 7
|
|
|
|
movq[esi + 8 * 2], mm2; store w1 of TL quadrant
|
|
punpckldq mm5, mm3; -- - 1, 2, 3, 4, 5, 6, 7
|
|
|
|
movq[esi + 8 * 4], mm5; store w2 of TL quadrant
|
|
punpckhdq mm1, mm3; -- - 1, 2, 3, 4, 5, 6, 7
|
|
|
|
movq[esi + 8 * 6], mm1; store w3 of TL quadrant
|
|
|
|
|
|
; transpose the top right quadrant(4X4) of the matrix
|
|
|
|
movq mm0, [esi + 8 * 1]; -- - 0
|
|
|
|
movq mm1, [esi + 8 * 3]; -- - 0, 1, 2
|
|
movq mm2, mm0
|
|
|
|
movq mm3, [esi + 8 * 5]
|
|
punpcklwd mm0, mm1; -- - 0, 1, 2, 3
|
|
|
|
punpckhwd mm2, mm1
|
|
movq mm1, [esi + 8 * 7]; -- - 0, 1, 2, 3
|
|
|
|
movq mm4, mm3
|
|
punpcklwd mm3, mm1; -- - 0, 1, 2, 3, 4
|
|
|
|
punpckhwd mm4, mm1; -- - 0, 1, 2, 3, 4
|
|
movq mm1, mm0
|
|
|
|
movq mm5, mm2
|
|
punpckldq mm0, mm3; -- - 0, 1, 2, 3, 4, 5
|
|
|
|
punpckhdq mm1, mm3; -- - 0, 1, 2, 3, 4, 5
|
|
movq mm3, [esi + 8 * 8]
|
|
|
|
movq[esi + 8 * 8], mm0
|
|
punpckldq mm2, mm4; -- - 1, 2, 3, 4, 5
|
|
|
|
punpckhdq mm5, mm4; -- - 1, 2, 3, 4, 5
|
|
movq mm4, [esi + 8 * 10]
|
|
|
|
; transpose the bottom left quadrant(4X4) of the matrix
|
|
; Also store w1, w2, w3 of top right quadrant into
|
|
; w5, w6, w7 of bottom left quadrant.Storing w0 of TR in w4
|
|
; of BL is already done.
|
|
|
|
movq[esi + 8 * 10], mm1
|
|
movq mm1, mm3; -- - 1, 2, 3, 4, 5
|
|
|
|
movq mm0, [esi + 8 * 12]
|
|
punpcklwd mm3, mm4; -- - 0, 1, 2, 3, 4, 5
|
|
|
|
punpckhwd mm1, mm4; -- - 0, 1, 2, 3, 4, 5
|
|
movq mm4, [esi + 8 * 14]
|
|
|
|
movq[esi + 8 * 12], mm2
|
|
movq mm2, mm0
|
|
|
|
movq[esi + 8 * 14], mm5
|
|
punpcklwd mm0, mm4; -- - 0, 1, 2, 3, 4
|
|
|
|
punpckhwd mm2, mm4; -- - 0, 1, 2, 3, 4
|
|
movq mm4, mm3
|
|
|
|
movq mm5, mm1
|
|
punpckldq mm3, mm0; -- - 0, 1, 2, 3, 4, 5
|
|
|
|
movq[esi + 8 * 1], mm3
|
|
punpckhdq mm4, mm0; -- - 1, 2, 4, 5
|
|
|
|
movq[esi + 8 * 3], mm4
|
|
punpckldq mm1, mm2; -- - 1, 2, 5
|
|
|
|
movq[esi + 8 * 5], mm1
|
|
punpckhdq mm5, mm2; -- - 5
|
|
|
|
movq[esi + 8 * 7], mm5
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;;;;;;;;; 1D DCT of the rows;;;;;;;;;;;
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
|
|
mov esi, wsptr; source
|
|
|
|
; column 0: even part
|
|
; use V4, V12, V0, V8 to produce V22..V25
|
|
movq mm0, [esi + 8 * 12]; V12
|
|
|
|
movq mm1, [esi + 8 * 4]; V4
|
|
|
|
movq mm3, [esi + 8 * 0]; V0
|
|
movq mm2, mm1; duplicate V4
|
|
|
|
movq mm5, [esi + 8 * 8]; V8
|
|
psubw mm1, mm0; V16
|
|
|
|
movq mm6, x5a825a825a825a82; 23170->V18
|
|
; ***PackMulW
|
|
movq mm4, mm1
|
|
|
|
punpcklwd mm1, const_zero
|
|
paddw mm2, mm0; V17
|
|
|
|
pmaddwd mm1, mm6
|
|
movq mm0, mm2; duplicate V17
|
|
|
|
punpckhwd mm4, const_zero
|
|
|
|
pmaddwd mm4, mm6
|
|
psrad mm1, 8
|
|
|
|
psrad mm4, 8
|
|
|
|
packssdw mm1, mm4
|
|
movq mm4, mm3; duplicate V0
|
|
; *
|
|
|
|
paddw mm3, mm5; V19
|
|
psubw mm4, mm5; V20; mm5 free
|
|
|
|
movq mm6, mm3; duplicate t74 = t81
|
|
psubw mm1, mm0; V21; mm0 free
|
|
|
|
paddw mm3, mm2; V22
|
|
movq mm5, mm1; duplicate V21
|
|
|
|
paddw mm1, mm4; V23
|
|
|
|
movq[esi + 8 * 4], mm3; V22
|
|
psubw mm4, mm5; V24; mm5 free
|
|
|
|
movq[esi + 8 * 12], mm1; V23
|
|
psubw mm6, mm2; V25; mm2 free
|
|
|
|
movq[esi + 8 * 0], mm4; V24
|
|
; keep mm6 alive all along the next block
|
|
; column 0: odd part
|
|
; use V2, V6, V10, V14 to produce V31, V39, V40, V41
|
|
movq mm7, [esi + 8 * 10]; V10
|
|
|
|
movq mm0, [esi + 8 * 6]; V6
|
|
movq mm3, mm7; duplicate V10
|
|
|
|
movq mm5, [esi + 8 * 2]; V2
|
|
psubw mm7, mm0; V26
|
|
|
|
movq mm4, [esi + 8 * 14]; V14
|
|
paddw mm3, mm0; V29; free mm0
|
|
|
|
movq mm2, x539f539f539f539f; 23170->V18
|
|
movq mm1, mm7; duplicate V26
|
|
|
|
; ***PackMulW
|
|
movq scratch5, mm6; store mm6
|
|
movq mm0, mm7
|
|
|
|
punpcklwd mm7, const_zero
|
|
|
|
pmaddwd mm7, mm2
|
|
|
|
punpckhwd mm0, const_zero
|
|
|
|
pmaddwd mm0, mm2
|
|
psrad mm7, 8
|
|
|
|
movq mm6, x4546454645464546; 23170->V18
|
|
psrad mm0, 8
|
|
|
|
packssdw mm7, mm0
|
|
movq mm0, mm5; duplicate V2
|
|
; *
|
|
|
|
paddw mm5, mm4; V27
|
|
psubw mm0, mm4; V28; free mm4
|
|
|
|
movq mm2, mm0; duplicate V28
|
|
; ***PackMulW
|
|
movq mm4, mm0
|
|
|
|
punpcklwd mm0, const_zero
|
|
|
|
pmaddwd mm0, mm6
|
|
|
|
punpckhwd mm4, const_zero
|
|
|
|
pmaddwd mm4, mm6
|
|
paddw mm1, mm2; V32; free mm2
|
|
|
|
movq mm2, x61f861f861f861f8; 23170->V18
|
|
psrad mm0, 8
|
|
|
|
psrad mm4, 8
|
|
movq mm6, mm1
|
|
|
|
packssdw mm0, mm4
|
|
movq mm4, mm5; duplicate t90 = t93
|
|
; *
|
|
|
|
; ***PackMulW
|
|
punpcklwd mm1, const_zero
|
|
paddw mm5, mm3; V31
|
|
|
|
pmaddwd mm1, mm2
|
|
psubw mm4, mm3; V30; free mm3
|
|
|
|
punpckhwd mm6, const_zero
|
|
|
|
pmaddwd mm6, mm2
|
|
psrad mm1, 8
|
|
|
|
psrad mm6, 8
|
|
|
|
packssdw mm1, mm6
|
|
; *
|
|
|
|
psubw mm0, mm1; V38
|
|
paddw mm1, mm7; V37; free mm7
|
|
|
|
movq mm7, x5a825a825a825a82; 23170->V18
|
|
; ***PackMulW
|
|
movq mm3, mm4
|
|
|
|
punpcklwd mm4, const_zero
|
|
psubw mm1, mm5; V39(mm5 still needed for next block)
|
|
|
|
pmaddwd mm4, mm7
|
|
|
|
punpckhwd mm3, const_zero
|
|
|
|
movq mm6, scratch5
|
|
pmaddwd mm3, mm7
|
|
|
|
movq mm2, [esi + 8 * 12]; V23
|
|
psrad mm4, 8
|
|
|
|
movq mm7, [esi + 8 * 4]; V22
|
|
psrad mm3, 8
|
|
|
|
packssdw mm4, mm3
|
|
movq mm3, mm6; duplicate V25
|
|
; *
|
|
|
|
psubw mm4, mm1; V40
|
|
|
|
paddw mm0, mm4; V41; free mm0
|
|
|
|
; column 0: output butterfly
|
|
|
|
psubw mm6, mm0; tm6
|
|
paddw mm3, mm0; tm8; free mm1
|
|
|
|
movq mm0, mm1; line added by Kumar
|
|
movq mm1, mm7; duplicate V22
|
|
|
|
movq[esi + 8 * 8], mm3; tm8; free mm3
|
|
paddw mm7, mm5; tm0
|
|
|
|
movq[esi + 8 * 6], mm6; tm6; free mm6
|
|
psubw mm1, mm5; tm14; free mm5
|
|
|
|
movq mm6, [esi + 8 * 0]; V24
|
|
movq mm3, mm2; duplicate t117 = t125
|
|
|
|
movq[esi + 8 * 0], mm7; tm0; free mm7
|
|
paddw mm2, mm0; tm2
|
|
|
|
movq[esi + 8 * 14], mm1; tm14; free mm1
|
|
psubw mm3, mm0; tm12; free mm0
|
|
|
|
movq[esi + 8 * 2], mm2; tm2; free mm2
|
|
movq mm0, mm6; duplicate t119 = t123
|
|
|
|
movq[esi + 8 * 12], mm3; tm12; free mm3
|
|
paddw mm6, mm4; tm4
|
|
|
|
movq mm1, [esi + 8 * 5]; V5
|
|
psubw mm0, mm4; tm10; free mm4
|
|
|
|
movq[esi + 8 * 4], mm6; tm4; free mm6
|
|
|
|
movq[esi + 8 * 10], mm0; tm10; free mm0
|
|
|
|
; column 1: even part
|
|
; use V5, V13, V1, V9 to produce V56..V59
|
|
|
|
movq mm7, [esi + 8 * 13]; V13
|
|
movq mm2, mm1; duplicate t128 = t130
|
|
|
|
movq mm3, [esi + 8 * 1]; V1
|
|
psubw mm1, mm7; V50
|
|
|
|
movq mm5, [esi + 8 * 9]; V9
|
|
paddw mm2, mm7; V51
|
|
|
|
movq mm4, x5a825a825a825a82; 23170->V18
|
|
; ***PackMulW
|
|
movq mm6, mm1
|
|
|
|
punpcklwd mm1, const_zero
|
|
|
|
pmaddwd mm1, mm4
|
|
|
|
punpckhwd mm6, const_zero
|
|
|
|
pmaddwd mm6, mm4
|
|
movq mm4, mm3; duplicate V1
|
|
|
|
paddw mm3, mm5; V53
|
|
psrad mm1, 8
|
|
|
|
psubw mm4, mm5; V54; mm5 free
|
|
movq mm7, mm3; duplicate V53
|
|
|
|
psrad mm6, 8
|
|
|
|
packssdw mm1, mm6
|
|
movq mm6, mm2; duplicate V51
|
|
|
|
; *
|
|
psubw mm1, mm6; V55; mm6 free
|
|
paddw mm3, mm2; V56
|
|
|
|
movq mm5, mm4; duplicate t140 = t142
|
|
paddw mm4, mm1; V57
|
|
|
|
movq[esi + 8 * 5], mm3; V56
|
|
psubw mm5, mm1; V58; mm1 free
|
|
|
|
movq[esi + 8 * 13], mm4; V57
|
|
psubw mm7, mm2; V59; mm2 free
|
|
|
|
movq[esi + 8 * 9], mm5; V58
|
|
|
|
; keep mm7 alive all along the next block
|
|
|
|
movq mm0, [esi + 8 * 11]; V11
|
|
|
|
movq mm6, [esi + 8 * 7]; V7
|
|
|
|
movq mm4, [esi + 8 * 15]; V15
|
|
movq mm3, mm0; duplicate V11
|
|
|
|
movq mm5, [esi + 8 * 3]; V3
|
|
paddw mm0, mm6; V63
|
|
|
|
; note that V15 computation has a correction step :
|
|
; this is a 'magic' constant that rebiases the results to be closer to the expected result
|
|
; this magic constant can be refined to reduce the error even more
|
|
; by doing the correction step in a later stage when the number is actually multiplied by 16
|
|
movq scratch7, mm7
|
|
psubw mm3, mm6; V60; free mm6
|
|
|
|
movq mm6, x539f539f539f539f; 23170->V18
|
|
movq mm1, mm3; duplicate V60
|
|
|
|
; ***PackMulW
|
|
movq mm7, mm1
|
|
|
|
punpcklwd mm1, const_zero
|
|
|
|
pmaddwd mm1, mm6
|
|
|
|
punpckhwd mm7, const_zero
|
|
|
|
pmaddwd mm7, mm6
|
|
movq mm6, mm5; duplicate V3
|
|
|
|
paddw mm5, mm4; V61
|
|
psrad mm1, 8
|
|
|
|
psubw mm6, mm4; V62; free mm4
|
|
movq mm4, mm5; duplicate V61
|
|
|
|
psrad mm7, 8
|
|
paddw mm5, mm0; V65->result
|
|
|
|
packssdw mm1, mm7
|
|
psubw mm4, mm0; V64; free mm0
|
|
; *
|
|
|
|
movq mm7, x5a825a825a825a82; 23170->V18
|
|
; ***PackMulW
|
|
movq mm2, mm4
|
|
|
|
punpcklwd mm4, const_zero
|
|
paddw mm3, mm6; V66
|
|
|
|
pmaddwd mm4, mm7
|
|
|
|
punpckhwd mm2, const_zero
|
|
|
|
pmaddwd mm2, mm7
|
|
|
|
movq mm7, x61f861f861f861f8; 23170->V18
|
|
psrad mm4, 8
|
|
|
|
psrad mm2, 8
|
|
|
|
packssdw mm4, mm2
|
|
; *
|
|
; ***PackMulW
|
|
movq mm2, mm3
|
|
|
|
punpcklwd mm3, const_zero
|
|
|
|
pmaddwd mm3, mm7
|
|
|
|
punpckhwd mm2, const_zero
|
|
|
|
pmaddwd mm2, mm7
|
|
|
|
movq mm7, x4546454645464546; 23170->V18
|
|
psrad mm3, 8
|
|
|
|
psrad mm2, 8
|
|
|
|
packssdw mm3, mm2
|
|
; *
|
|
; ***PackMulW
|
|
movq mm2, mm6
|
|
|
|
punpcklwd mm6, const_zero
|
|
|
|
pmaddwd mm6, mm7
|
|
|
|
punpckhwd mm2, const_zero
|
|
|
|
pmaddwd mm2, mm7
|
|
|
|
movq mm0, [esi + 8 * 5]; V56
|
|
psrad mm6, 8
|
|
|
|
movq mm7, scratch7
|
|
psrad mm2, 8
|
|
|
|
packssdw mm6, mm2
|
|
movq mm2, mm5; duplicate V65
|
|
; *
|
|
|
|
psubw mm6, mm3; V72
|
|
paddw mm3, mm1; V71; free mm1
|
|
|
|
psubw mm3, mm2; V73; free mm2
|
|
movq mm1, mm0; duplicate t177 = t188
|
|
|
|
psubw mm4, mm3; V74
|
|
paddw mm0, mm5; tm1
|
|
|
|
movq mm2, [esi + 8 * 13]; V57
|
|
paddw mm6, mm4; V75
|
|
|
|
|
|
; location
|
|
; 5 - V56
|
|
; 13 - V57
|
|
; 9 - V58
|
|
; X - V59, mm7
|
|
; X - V65, mm5
|
|
; X - V73, mm6
|
|
; X - V74, mm4
|
|
; X - V75, mm3
|
|
; free mm0, mm1& mm2
|
|
|
|
movq[esi + 8 * 1], mm0; tm1; free mm0
|
|
psubw mm1, mm5; tm15; free mm5
|
|
|
|
; save the store as used directly in the transpose
|
|
movq mm5, mm7; duplicate t182 = t184
|
|
psubw mm7, mm6; tm7
|
|
|
|
paddw mm5, mm6; tm9; free mm3
|
|
movq mm6, mm3
|
|
|
|
movq mm0, [esi + 8 * 9]; V58
|
|
movq mm3, mm2; duplicate V57
|
|
|
|
movq[esi + 8 * 7], mm7; tm7; free mm7
|
|
psubw mm3, mm6; tm13
|
|
|
|
paddw mm2, mm6; tm3; free mm6
|
|
movq mm6, mm0; duplicate V58
|
|
|
|
movq[esi + 8 * 3], mm2; tm3; free mm2
|
|
paddw mm0, mm4; tm5
|
|
|
|
psubw mm6, mm4; tm11; free mm4
|
|
|
|
movq[esi + 8 * 5], mm0; tm5; free mm0
|
|
|
|
|
|
; Final results to be stored after the transpose
|
|
; transpose the bottom right quadrant(4X4) of the matrix
|
|
; -------- - -------- -
|
|
; | M1 | M2 | | M1'| M3' |
|
|
; -------- - -- > -------- -
|
|
; | M3 | M4 | | M2'| M4' |
|
|
; -------- - -------- -
|
|
;
|
|
; get the pointer to array "range"
|
|
mov edi, range_limit
|
|
|
|
; calculate the destination address
|
|
mov edx, output_buf; get output_buf[4]
|
|
|
|
mov ebx, [edx + 16]
|
|
add ebx, output_col; add to output_col
|
|
|
|
movq mm0, mm5; copy w4-- - 0, 1, 3, 5, 6
|
|
punpcklwd mm5, mm6;
|
|
|
|
punpckhwd mm0, mm6; -- - 0, 1, 3, 5, 6
|
|
movq mm2, mm3; -- - 0, 1, 2, 3, 5, 6
|
|
|
|
movq mm6, [esi + 8 * 0]; get w0 of top left quadrant
|
|
punpcklwd mm3, mm1;
|
|
|
|
movq mm7, [esi + 8 * 2]; get w1 of top left quadrant
|
|
punpckhwd mm2, mm1; -- - 0, 2, 3, 5, 6, 7
|
|
|
|
movq mm4, mm5; -- - 0, 2, 3, 4, 5, 6, 7
|
|
punpckldq mm5, mm3; transposed w4
|
|
|
|
psrlw mm5, 5
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 4], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 5], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 6], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 7], al
|
|
|
|
mov ebx, [edx + 20]
|
|
add ebx, output_col; add to output_col
|
|
|
|
punpckhdq mm4, mm3; transposed w5-- - 0, 2, 4, 6, 7
|
|
|
|
movq mm3, mm0; -- - 0, 2, 3, 4, 6, 7
|
|
punpckldq mm0, mm2; transposed w6
|
|
|
|
psrlw mm4, 5
|
|
movd eax, mm4
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 4], al
|
|
|
|
psrlq mm4, 16
|
|
movd eax, mm4
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 5], al
|
|
|
|
psrlq mm4, 16
|
|
movd eax, mm4
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 6], al
|
|
|
|
psrlq mm4, 16
|
|
movd eax, mm4
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 7], al
|
|
|
|
mov ecx, [edx + 24]
|
|
add ecx, output_col; add to output_col
|
|
|
|
punpckhdq mm3, mm2; transposed w7-- - 0, 3, 6, 7
|
|
|
|
psrlw mm0, 5
|
|
|
|
movd eax, mm0
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 4], al
|
|
|
|
psrlq mm0, 16
|
|
movd eax, mm0
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 5], al
|
|
|
|
psrlq mm0, 16
|
|
movd eax, mm0
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 6], al
|
|
|
|
psrlq mm0, 16
|
|
movd eax, mm0
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 7], al
|
|
|
|
mov ebx, [edx + 28]
|
|
add ebx, output_col; add to output_col
|
|
|
|
movq mm5, mm6; copy w0
|
|
|
|
psrlw mm3, 5
|
|
movd eax, mm3
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 4], al
|
|
|
|
psrlq mm3, 16
|
|
movd eax, mm3
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 5], al
|
|
|
|
psrlq mm3, 16
|
|
movd eax, mm3
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 6], al
|
|
|
|
psrlq mm3, 16
|
|
movd eax, mm3
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 7], al
|
|
|
|
|
|
punpcklwd mm6, mm7
|
|
|
|
; transpose the top left quadrant(4X4) of the matrix
|
|
|
|
; calculate the destination address
|
|
mov edx, output_buf; get output_buf[0]
|
|
|
|
mov ebx, [edx + 0]
|
|
add ebx, output_col; add to output_col
|
|
|
|
|
|
movq mm4, [esi + 8 * 6]; get w3 of TL quadrant
|
|
punpckhwd mm5, mm7; -- - 5, 6, 7
|
|
|
|
movq mm7, [esi + 8 * 4]; get w2 of TL quadrant
|
|
movq mm2, mm6
|
|
|
|
movq mm3, mm7; copy w2-- - 3, 4, 5, 6, 7
|
|
punpcklwd mm7, mm4; -- - 2, 3, 4, 5, 6, 7
|
|
|
|
punpckhwd mm3, mm4; -- - 2, 3, 4, 5, 6, 7
|
|
movq mm4, mm5;
|
|
|
|
movq mm1, mm5
|
|
punpckldq mm6, mm7; -- - 1, 2, 3, 4, 5, 6, 7
|
|
|
|
psrlw mm6, 5
|
|
movd eax, mm6
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx], al
|
|
|
|
psrlq mm6, 16
|
|
movd eax, mm6
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 1], al
|
|
|
|
psrlq mm6, 16
|
|
movd eax, mm6
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 2], al
|
|
|
|
psrlq mm6, 16
|
|
movd eax, mm6
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 3], al
|
|
|
|
|
|
mov ebx, [edx + 4]
|
|
add ebx, output_col; add to output_col
|
|
|
|
punpckhdq mm2, mm7; -- - 1, 2, 3, 4, 5, 6, 7
|
|
|
|
psrlw mm2, 5
|
|
movd eax, mm2
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx], al
|
|
|
|
psrlq mm2, 16
|
|
movd eax, mm2
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 1], al
|
|
|
|
psrlq mm2, 16
|
|
movd eax, mm2
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 2], al
|
|
|
|
psrlq mm2, 16
|
|
movd eax, mm2
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 3], al
|
|
|
|
|
|
mov ecx, [edx + 8]
|
|
add ecx, output_col; add to output_col
|
|
|
|
punpckldq mm5, mm3; -- - 1, 2, 3, 4, 5, 6, 7
|
|
|
|
psrlw mm5, 5
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 1], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 2], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 3], al
|
|
|
|
|
|
mov ebx, [edx + 12]
|
|
add ebx, output_col; add to output_col
|
|
|
|
punpckhdq mm1, mm3; -- - 1, 2, 3, 4, 5, 6, 7
|
|
|
|
psrlw mm1, 5
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx], al
|
|
|
|
psrlq mm1, 16
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 1], al
|
|
|
|
psrlq mm1, 16
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 2], al
|
|
|
|
psrlq mm1, 16
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 3], al
|
|
|
|
|
|
; transpose the top right quadrant(4X4) of the matrix
|
|
|
|
; calculate the destination address for** bottom left quadrant
|
|
mov edx, output_buf; get output_buf[4]
|
|
|
|
mov ebx, [edx + 16]
|
|
add ebx, output_col; add to output_col
|
|
|
|
movq mm0, [esi + 8 * 1]; -- - 0
|
|
|
|
movq mm1, [esi + 8 * 3]; -- - 0, 1, 2
|
|
movq mm2, mm0
|
|
|
|
movq mm3, [esi + 8 * 5]
|
|
punpcklwd mm0, mm1; -- - 0, 1, 2, 3
|
|
|
|
punpckhwd mm2, mm1
|
|
movq mm4, mm3
|
|
|
|
movq mm1, [esi + 8 * 7]; -- - 0, 1, 2, 3
|
|
movq mm5, mm2
|
|
|
|
punpcklwd mm3, mm1; -- - 0, 1, 2, 3, 4
|
|
|
|
punpckhwd mm4, mm1; -- - 0, 1, 2, 3, 4
|
|
movq mm1, mm0
|
|
|
|
punpckldq mm0, mm3; -- - 0, 1, 2, 3, 4, 5
|
|
|
|
punpckhdq mm1, mm3; -- - 0, 1, 2, 3, 4, 5
|
|
|
|
movq mm3, [esi + 8 * 8]
|
|
psrlw mm0, 5
|
|
movd eax, mm0
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx], al
|
|
|
|
psrlq mm0, 16
|
|
movd eax, mm0
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 1], al
|
|
|
|
psrlq mm0, 16
|
|
movd eax, mm0
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 2], al
|
|
|
|
psrlq mm0, 16
|
|
movd eax, mm0
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 3], al
|
|
|
|
mov ebx, [edx + 20]
|
|
add ebx, output_col; add to output_col
|
|
|
|
punpckldq mm2, mm4; -- - 1, 2, 3, 4, 5
|
|
|
|
punpckhdq mm5, mm4; -- - 1, 2, 3, 4, 5
|
|
movq mm4, [esi + 8 * 10]
|
|
|
|
; transpose the bottom left quadrant(4X4) of the matrix
|
|
; Also store w1, w2, w3 of top right quadrant into
|
|
; w5, w6, w7 of bottom left quadrant.Storing w0 of TR in w4
|
|
; of BL is already done.
|
|
|
|
psrlw mm1, 5
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx], al
|
|
|
|
psrlq mm1, 16
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 1], al
|
|
|
|
psrlq mm1, 16
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 2], al
|
|
|
|
psrlq mm1, 16
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 3], al
|
|
|
|
mov ecx, [edx + 24]
|
|
add ecx, output_col; add to output_col
|
|
|
|
movq mm0, [esi + 8 * 12]
|
|
movq mm1, mm3; -- - 1, 2, 3, 4, 5
|
|
|
|
punpcklwd mm3, mm4; -- - 0, 1, 2, 3, 4, 5
|
|
|
|
punpckhwd mm1, mm4; -- - 0, 1, 2, 3, 4, 5
|
|
|
|
movq mm4, [esi + 8 * 14]
|
|
psrlw mm2, 5
|
|
movd eax, mm2
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx], al
|
|
|
|
psrlq mm2, 16
|
|
movd eax, mm2
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 1], al
|
|
|
|
psrlq mm2, 16
|
|
movd eax, mm2
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 2], al
|
|
|
|
psrlq mm2, 16
|
|
movd eax, mm2
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 3], al
|
|
|
|
mov ebx, [edx + 28]
|
|
add ebx, output_col; add to output_col
|
|
|
|
movq mm2, mm0
|
|
|
|
psrlw mm5, 5
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx], al
|
|
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 1], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 2], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 3], al
|
|
|
|
|
|
punpcklwd mm0, mm4; -- - 0, 1, 2, 3, 4
|
|
|
|
punpckhwd mm2, mm4; -- - 0, 1, 2, 3, 4
|
|
movq mm4, mm3
|
|
|
|
movq mm5, mm1
|
|
punpckldq mm3, mm0; -- - 0, 1, 2, 3, 4, 5
|
|
|
|
; calculate the destination address for** top right quadrant
|
|
mov edx, output_buf; get output_buf[0]
|
|
|
|
mov ebx, [edx + 0]
|
|
add ebx, output_col; add to output_col
|
|
|
|
psrlw mm3, 5
|
|
movd eax, mm3
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 4], al
|
|
|
|
psrlq mm3, 16
|
|
movd eax, mm3
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 5], al
|
|
|
|
psrlq mm3, 16
|
|
movd eax, mm3
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 6], al
|
|
|
|
psrlq mm3, 16
|
|
movd eax, mm3
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 7], al
|
|
|
|
mov ebx, [edx + 4]
|
|
add ebx, output_col; add to output_col
|
|
|
|
punpckhdq mm4, mm0; -- - 1, 2, 4, 5
|
|
|
|
psrlw mm4, 5
|
|
movd eax, mm4
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 4], al
|
|
|
|
psrlq mm4, 16
|
|
movd eax, mm4
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 5], al
|
|
|
|
psrlq mm4, 16
|
|
movd eax, mm4
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 6], al
|
|
|
|
psrlq mm4, 16
|
|
movd eax, mm4
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 7], al
|
|
|
|
mov ecx, [edx + 8]
|
|
add ecx, output_col; add to output_col
|
|
|
|
punpckldq mm1, mm2; -- - 1, 2, 5
|
|
|
|
psrlw mm1, 5
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 4], al
|
|
|
|
psrlq mm1, 16
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 5], al
|
|
|
|
psrlq mm1, 16
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 6], al
|
|
|
|
psrlq mm1, 16
|
|
movd eax, mm1
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ecx + 7], al
|
|
|
|
mov ebx, [edx + 12]
|
|
add ebx, output_col; add to output_col
|
|
|
|
punpckhdq mm5, mm2; -- - 5
|
|
|
|
psrlw mm5, 5
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 4], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 5], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 6], al
|
|
|
|
psrlq mm5, 16
|
|
movd eax, mm5
|
|
and eax, 03ffh
|
|
mov al, byte ptr[edi][eax]
|
|
mov byte ptr[ebx + 7], al
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
emms
|
|
|
|
|
|
} /* end of __asm */
|
|
}
|
|
|
|
#endif /* DCT_IFAST_SUPPORTED */
|
|
|