mirror of
https://git.ffmpeg.org/ffmpeg.git
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631 lines
24 KiB
C
631 lines
24 KiB
C
/*
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* idct_mmx.c
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* Copyright (C) 1999-2001 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
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*
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* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
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* See http://libmpeg2.sourceforge.net/ for updates.
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*
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* mpeg2dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* mpeg2dec 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with mpeg2dec; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/common.h"
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#include "libavcodec/dsputil.h"
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#include "libavutil/x86_cpu.h"
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#include "dsputil_mmx.h"
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#define ROW_SHIFT 11
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#define COL_SHIFT 6
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#define round(bias) ((int)(((bias)+0.5) * (1<<ROW_SHIFT)))
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#define rounder(bias) {round (bias), round (bias)}
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#if 0
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/* C row IDCT - it is just here to document the MMXEXT and MMX versions */
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static inline void idct_row (int16_t * row, int offset,
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int16_t * table, int32_t * rounder)
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{
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int C1, C2, C3, C4, C5, C6, C7;
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int a0, a1, a2, a3, b0, b1, b2, b3;
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row += offset;
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C1 = table[1];
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C2 = table[2];
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C3 = table[3];
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C4 = table[4];
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C5 = table[5];
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C6 = table[6];
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C7 = table[7];
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a0 = C4*row[0] + C2*row[2] + C4*row[4] + C6*row[6] + *rounder;
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a1 = C4*row[0] + C6*row[2] - C4*row[4] - C2*row[6] + *rounder;
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a2 = C4*row[0] - C6*row[2] - C4*row[4] + C2*row[6] + *rounder;
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a3 = C4*row[0] - C2*row[2] + C4*row[4] - C6*row[6] + *rounder;
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b0 = C1*row[1] + C3*row[3] + C5*row[5] + C7*row[7];
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b1 = C3*row[1] - C7*row[3] - C1*row[5] - C5*row[7];
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b2 = C5*row[1] - C1*row[3] + C7*row[5] + C3*row[7];
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b3 = C7*row[1] - C5*row[3] + C3*row[5] - C1*row[7];
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row[0] = (a0 + b0) >> ROW_SHIFT;
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row[1] = (a1 + b1) >> ROW_SHIFT;
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row[2] = (a2 + b2) >> ROW_SHIFT;
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row[3] = (a3 + b3) >> ROW_SHIFT;
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row[4] = (a3 - b3) >> ROW_SHIFT;
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row[5] = (a2 - b2) >> ROW_SHIFT;
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row[6] = (a1 - b1) >> ROW_SHIFT;
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row[7] = (a0 - b0) >> ROW_SHIFT;
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}
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#endif
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/* MMXEXT row IDCT */
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#define mmxext_table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, -c4, -c2, \
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c4, c6, c4, c6, \
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c1, c3, -c1, -c5, \
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c5, c7, c3, -c7, \
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c4, -c6, c4, -c6, \
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-c4, c2, c4, -c2, \
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c5, -c1, c3, -c1, \
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c7, c3, c7, -c5 }
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static inline void mmxext_row_head (int16_t * const row, const int offset,
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const int16_t * const table)
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{
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__asm__ volatile(
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"movq (%0), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */
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"movq 8(%0), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */
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"movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */
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"movq (%1), %%mm3 \n\t" /* mm3 = -C2 -C4 C2 C4 */
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"movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */
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"movq 8(%1), %%mm4 \n\t" /* mm4 = C6 C4 C6 C4 */
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"pmaddwd %%mm0, %%mm3 \n\t" /* mm3 = -C4*x4-C2*x6 C4*x0+C2*x2 */
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"pshufw $0x4e, %%mm2, %%mm2 \n\t" /* mm2 = x2 x0 x6 x4 */
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:: "r" ((row+offset)), "r" (table)
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);
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}
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static inline void mmxext_row (const int16_t * const table,
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const int32_t * const rounder)
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{
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__asm__ volatile (
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"movq 16(%0), %%mm1 \n\t" /* mm1 = -C5 -C1 C3 C1 */
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"pmaddwd %%mm2, %%mm4 \n\t" /* mm4 = C4*x0+C6*x2 C4*x4+C6*x6 */
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"pmaddwd 32(%0), %%mm0 \n\t" /* mm0 = C4*x4-C6*x6 C4*x0-C6*x2 */
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"pshufw $0x4e, %%mm6, %%mm6 \n\t" /* mm6 = x3 x1 x7 x5 */
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"movq 24(%0), %%mm7 \n\t" /* mm7 = -C7 C3 C7 C5 */
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"pmaddwd %%mm5, %%mm1 \n\t" /* mm1= -C1*x5-C5*x7 C1*x1+C3*x3 */
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"paddd (%1), %%mm3 \n\t" /* mm3 += rounder */
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"pmaddwd %%mm6, %%mm7 \n\t" /* mm7 = C3*x1-C7*x3 C5*x5+C7*x7 */
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"pmaddwd 40(%0), %%mm2 \n\t" /* mm2= C4*x0-C2*x2 -C4*x4+C2*x6 */
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"paddd %%mm4, %%mm3 \n\t" /* mm3 = a1 a0 + rounder */
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"pmaddwd 48(%0), %%mm5 \n\t" /* mm5 = C3*x5-C1*x7 C5*x1-C1*x3 */
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"movq %%mm3, %%mm4 \n\t" /* mm4 = a1 a0 + rounder */
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"pmaddwd 56(%0), %%mm6 \n\t" /* mm6 = C7*x1-C5*x3 C7*x5+C3*x7 */
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"paddd %%mm7, %%mm1 \n\t" /* mm1 = b1 b0 */
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"paddd (%1), %%mm0 \n\t" /* mm0 += rounder */
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"psubd %%mm1, %%mm3 \n\t" /* mm3 = a1-b1 a0-b0 + rounder */
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm3 \n\t" /* mm3 = y6 y7 */
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"paddd %%mm4, %%mm1 \n\t" /* mm1 = a1+b1 a0+b0 + rounder */
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"paddd %%mm2, %%mm0 \n\t" /* mm0 = a3 a2 + rounder */
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm1 \n\t" /* mm1 = y1 y0 */
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"paddd %%mm6, %%mm5 \n\t" /* mm5 = b3 b2 */
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"movq %%mm0, %%mm4 \n\t" /* mm4 = a3 a2 + rounder */
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"paddd %%mm5, %%mm0 \n\t" /* mm0 = a3+b3 a2+b2 + rounder */
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"psubd %%mm5, %%mm4 \n\t" /* mm4 = a3-b3 a2-b2 + rounder */
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: : "r" (table), "r" (rounder));
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}
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static inline void mmxext_row_tail (int16_t * const row, const int store)
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{
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__asm__ volatile (
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm4 \n\t" /* mm4 = y4 y5 */
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"packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */
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"packssdw %%mm3, %%mm4 \n\t" /* mm4 = y6 y7 y4 y5 */
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"movq %%mm1, (%0) \n\t" /* save y3 y2 y1 y0 */
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"pshufw $0xb1, %%mm4, %%mm4 \n\t" /* mm4 = y7 y6 y5 y4 */
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/* slot */
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"movq %%mm4, 8(%0) \n\t" /* save y7 y6 y5 y4 */
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:: "r" (row+store)
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);
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}
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static inline void mmxext_row_mid (int16_t * const row, const int store,
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const int offset,
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const int16_t * const table)
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{
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__asm__ volatile (
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"movq (%0,%1), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */
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"movq 8(%0,%1), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm4 \n\t" /* mm4 = y4 y5 */
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"packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */
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"movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */
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"packssdw %%mm3, %%mm4 \n\t" /* mm4 = y6 y7 y4 y5 */
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"movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */
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"movq %%mm1, (%0,%2) \n\t" /* save y3 y2 y1 y0 */
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"pshufw $0xb1, %%mm4, %%mm4\n\t" /* mm4 = y7 y6 y5 y4 */
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"movq (%3), %%mm3 \n\t" /* mm3 = -C2 -C4 C2 C4 */
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"movq %%mm4, 8(%0,%2) \n\t" /* save y7 y6 y5 y4 */
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"pmaddwd %%mm0, %%mm3 \n\t" /* mm3= -C4*x4-C2*x6 C4*x0+C2*x2 */
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"movq 8(%3), %%mm4 \n\t" /* mm4 = C6 C4 C6 C4 */
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"pshufw $0x4e, %%mm2, %%mm2\n\t" /* mm2 = x2 x0 x6 x4 */
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:: "r" (row), "r" ((x86_reg) (2*offset)), "r" ((x86_reg) (2*store)), "r" (table)
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);
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}
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/* MMX row IDCT */
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#define mmx_table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, c4, c6, \
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c4, c6, -c4, -c2, \
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c1, c3, c3, -c7, \
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c5, c7, -c1, -c5, \
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c4, -c6, c4, -c2, \
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-c4, c2, c4, -c6, \
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c5, -c1, c7, -c5, \
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c7, c3, c3, -c1 }
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static inline void mmx_row_head (int16_t * const row, const int offset,
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const int16_t * const table)
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{
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__asm__ volatile (
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"movq (%0), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */
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"movq 8(%0), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */
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"movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */
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"movq (%1), %%mm3 \n\t" /* mm3 = C6 C4 C2 C4 */
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"movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */
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"punpckldq %%mm0, %%mm0 \n\t" /* mm0 = x2 x0 x2 x0 */
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"movq 8(%1), %%mm4 \n\t" /* mm4 = -C2 -C4 C6 C4 */
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"pmaddwd %%mm0, %%mm3 \n\t" /* mm3 = C4*x0+C6*x2 C4*x0+C2*x2 */
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"movq 16(%1), %%mm1 \n\t" /* mm1 = -C7 C3 C3 C1 */
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"punpckhdq %%mm2, %%mm2 \n\t" /* mm2 = x6 x4 x6 x4 */
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:: "r" ((row+offset)), "r" (table)
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);
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}
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static inline void mmx_row (const int16_t * const table,
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const int32_t * const rounder)
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{
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__asm__ volatile (
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"pmaddwd %%mm2, %%mm4 \n\t" /* mm4 = -C4*x4-C2*x6 C4*x4+C6*x6 */
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"punpckldq %%mm5, %%mm5 \n\t" /* mm5 = x3 x1 x3 x1 */
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"pmaddwd 32(%0), %%mm0 \n\t" /* mm0 = C4*x0-C2*x2 C4*x0-C6*x2 */
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"punpckhdq %%mm6, %%mm6 \n\t" /* mm6 = x7 x5 x7 x5 */
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"movq 24(%0), %%mm7 \n\t" /* mm7 = -C5 -C1 C7 C5 */
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"pmaddwd %%mm5, %%mm1 \n\t" /* mm1 = C3*x1-C7*x3 C1*x1+C3*x3 */
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"paddd (%1), %%mm3 \n\t" /* mm3 += rounder */
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"pmaddwd %%mm6, %%mm7 \n\t" /* mm7 = -C1*x5-C5*x7 C5*x5+C7*x7 */
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"pmaddwd 40(%0), %%mm2 \n\t" /* mm2 = C4*x4-C6*x6 -C4*x4+C2*x6 */
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"paddd %%mm4, %%mm3 \n\t" /* mm3 = a1 a0 + rounder */
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"pmaddwd 48(%0), %%mm5 \n\t" /* mm5 = C7*x1-C5*x3 C5*x1-C1*x3 */
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"movq %%mm3, %%mm4 \n\t" /* mm4 = a1 a0 + rounder */
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"pmaddwd 56(%0), %%mm6 \n\t" /* mm6 = C3*x5-C1*x7 C7*x5+C3*x7 */
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"paddd %%mm7, %%mm1 \n\t" /* mm1 = b1 b0 */
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"paddd (%1), %%mm0 \n\t" /* mm0 += rounder */
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"psubd %%mm1, %%mm3 \n\t" /* mm3 = a1-b1 a0-b0 + rounder */
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm3 \n\t" /* mm3 = y6 y7 */
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"paddd %%mm4, %%mm1 \n\t" /* mm1 = a1+b1 a0+b0 + rounder */
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"paddd %%mm2, %%mm0 \n\t" /* mm0 = a3 a2 + rounder */
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm1 \n\t" /* mm1 = y1 y0 */
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"paddd %%mm6, %%mm5 \n\t" /* mm5 = b3 b2 */
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"movq %%mm0, %%mm7 \n\t" /* mm7 = a3 a2 + rounder */
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"paddd %%mm5, %%mm0 \n\t" /* mm0 = a3+b3 a2+b2 + rounder */
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"psubd %%mm5, %%mm7 \n\t" /* mm7 = a3-b3 a2-b2 + rounder */
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:: "r" (table), "r" (rounder)
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);
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}
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static inline void mmx_row_tail (int16_t * const row, const int store)
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{
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__asm__ volatile (
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm7 \n\t" /* mm7 = y4 y5 */
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"packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */
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"packssdw %%mm3, %%mm7 \n\t" /* mm7 = y6 y7 y4 y5 */
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"movq %%mm1, (%0) \n\t" /* save y3 y2 y1 y0 */
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"movq %%mm7, %%mm4 \n\t" /* mm4 = y6 y7 y4 y5 */
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"pslld $16, %%mm7 \n\t" /* mm7 = y7 0 y5 0 */
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"psrld $16, %%mm4 \n\t" /* mm4 = 0 y6 0 y4 */
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"por %%mm4, %%mm7 \n\t" /* mm7 = y7 y6 y5 y4 */
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/* slot */
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"movq %%mm7, 8(%0) \n\t" /* save y7 y6 y5 y4 */
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:: "r" (row+store)
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);
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}
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static inline void mmx_row_mid (int16_t * const row, const int store,
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const int offset, const int16_t * const table)
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{
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__asm__ volatile (
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"movq (%0,%1), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */
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"movq 8(%0,%1), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */
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"psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm7 \n\t" /* mm7 = y4 y5 */
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"packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */
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"movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */
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"packssdw %%mm3, %%mm7 \n\t" /* mm7 = y6 y7 y4 y5 */
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"movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */
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"movq %%mm1, (%0,%2) \n\t" /* save y3 y2 y1 y0 */
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"movq %%mm7, %%mm1 \n\t" /* mm1 = y6 y7 y4 y5 */
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"punpckldq %%mm0, %%mm0 \n\t" /* mm0 = x2 x0 x2 x0 */
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"psrld $16, %%mm7 \n\t" /* mm7 = 0 y6 0 y4 */
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"movq (%3), %%mm3 \n\t" /* mm3 = C6 C4 C2 C4 */
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"pslld $16, %%mm1 \n\t" /* mm1 = y7 0 y5 0 */
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"movq 8(%3), %%mm4 \n\t" /* mm4 = -C2 -C4 C6 C4 */
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"por %%mm1, %%mm7 \n\t" /* mm7 = y7 y6 y5 y4 */
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"movq 16(%3), %%mm1 \n\t" /* mm1 = -C7 C3 C3 C1 */
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"punpckhdq %%mm2, %%mm2 \n\t" /* mm2 = x6 x4 x6 x4 */
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"movq %%mm7, 8(%0,%2) \n\t" /* save y7 y6 y5 y4 */
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"pmaddwd %%mm0, %%mm3 \n\t" /* mm3 = C4*x0+C6*x2 C4*x0+C2*x2 */
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: : "r" (row), "r" ((x86_reg) (2*offset)), "r" ((x86_reg) (2*store)), "r" (table)
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);
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}
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#if 0
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/* C column IDCT - it is just here to document the MMXEXT and MMX versions */
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static inline void idct_col (int16_t * col, int offset)
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{
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/* multiplication - as implemented on mmx */
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#define F(c,x) (((c) * (x)) >> 16)
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/* saturation - it helps us handle torture test cases */
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#define S(x) (((x)>32767) ? 32767 : ((x)<-32768) ? -32768 : (x))
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int16_t x0, x1, x2, x3, x4, x5, x6, x7;
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int16_t y0, y1, y2, y3, y4, y5, y6, y7;
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int16_t a0, a1, a2, a3, b0, b1, b2, b3;
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int16_t u04, v04, u26, v26, u17, v17, u35, v35, u12, v12;
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col += offset;
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x0 = col[0*8];
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x1 = col[1*8];
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x2 = col[2*8];
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x3 = col[3*8];
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x4 = col[4*8];
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x5 = col[5*8];
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x6 = col[6*8];
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x7 = col[7*8];
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u04 = S (x0 + x4);
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v04 = S (x0 - x4);
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u26 = S (F (T2, x6) + x2);
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v26 = S (F (T2, x2) - x6);
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a0 = S (u04 + u26);
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a1 = S (v04 + v26);
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a2 = S (v04 - v26);
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a3 = S (u04 - u26);
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u17 = S (F (T1, x7) + x1);
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v17 = S (F (T1, x1) - x7);
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u35 = S (F (T3, x5) + x3);
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v35 = S (F (T3, x3) - x5);
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b0 = S (u17 + u35);
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b3 = S (v17 - v35);
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u12 = S (u17 - u35);
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v12 = S (v17 + v35);
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u12 = S (2 * F (C4, u12));
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v12 = S (2 * F (C4, v12));
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b1 = S (u12 + v12);
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b2 = S (u12 - v12);
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y0 = S (a0 + b0) >> COL_SHIFT;
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y1 = S (a1 + b1) >> COL_SHIFT;
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y2 = S (a2 + b2) >> COL_SHIFT;
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y3 = S (a3 + b3) >> COL_SHIFT;
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y4 = S (a3 - b3) >> COL_SHIFT;
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y5 = S (a2 - b2) >> COL_SHIFT;
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y6 = S (a1 - b1) >> COL_SHIFT;
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y7 = S (a0 - b0) >> COL_SHIFT;
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col[0*8] = y0;
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col[1*8] = y1;
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col[2*8] = y2;
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col[3*8] = y3;
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col[4*8] = y4;
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col[5*8] = y5;
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col[6*8] = y6;
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col[7*8] = y7;
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}
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#endif
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/* MMX column IDCT */
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static inline void idct_col (int16_t * const col, const int offset)
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|
{
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#define T1 13036
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#define T2 27146
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#define T3 43790
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#define C4 23170
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DECLARE_ALIGNED(8, static const short, t1_vector)[] = {
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T1,T1,T1,T1,
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T2,T2,T2,T2,
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T3,T3,T3,T3,
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C4,C4,C4,C4
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};
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|
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/* column code adapted from Peter Gubanov */
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/* http://www.elecard.com/peter/idct.shtml */
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__asm__ volatile (
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"movq (%0), %%mm0 \n\t" /* mm0 = T1 */
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"movq 2*8(%1), %%mm1 \n\t" /* mm1 = x1 */
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"movq %%mm0, %%mm2 \n\t" /* mm2 = T1 */
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|
|
"movq 7*2*8(%1), %%mm4 \n\t" /* mm4 = x7 */
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"pmulhw %%mm1, %%mm0 \n\t" /* mm0 = T1*x1 */
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|
|
|
"movq 16(%0), %%mm5 \n\t" /* mm5 = T3 */
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"pmulhw %%mm4, %%mm2 \n\t" /* mm2 = T1*x7 */
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|
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"movq 2*5*8(%1), %%mm6 \n\t" /* mm6 = x5 */
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"movq %%mm5, %%mm7 \n\t" /* mm7 = T3-1 */
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|
|
|
"movq 3*8*2(%1), %%mm3 \n\t" /* mm3 = x3 */
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|
"psubsw %%mm4, %%mm0 \n\t" /* mm0 = v17 */
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|
|
|
"movq 8(%0), %%mm4 \n\t" /* mm4 = T2 */
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"pmulhw %%mm3, %%mm5 \n\t" /* mm5 = (T3-1)*x3 */
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|
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"paddsw %%mm2, %%mm1 \n\t" /* mm1 = u17 */
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"pmulhw %%mm6, %%mm7 \n\t" /* mm7 = (T3-1)*x5 */
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|
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/* slot */
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"movq %%mm4, %%mm2 \n\t" /* mm2 = T2 */
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"paddsw %%mm3, %%mm5 \n\t" /* mm5 = T3*x3 */
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|
|
|
"pmulhw 2*8*2(%1), %%mm4 \n\t" /* mm4 = T2*x2 */
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|
"paddsw %%mm6, %%mm7 \n\t" /* mm7 = T3*x5 */
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|
|
|
"psubsw %%mm6, %%mm5 \n\t" /* mm5 = v35 */
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|
"paddsw %%mm3, %%mm7 \n\t" /* mm7 = u35 */
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|
|
|
"movq 6*8*2(%1), %%mm3 \n\t" /* mm3 = x6 */
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|
"movq %%mm0, %%mm6 \n\t" /* mm6 = v17 */
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|
|
|
"pmulhw %%mm3, %%mm2 \n\t" /* mm2 = T2*x6 */
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|
"psubsw %%mm5, %%mm0 \n\t" /* mm0 = b3 */
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|
|
|
"psubsw %%mm3, %%mm4 \n\t" /* mm4 = v26 */
|
|
"paddsw %%mm6, %%mm5 \n\t" /* mm5 = v12 */
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|
|
|
"movq %%mm0, 3*8*2(%1)\n\t" /* save b3 in scratch0 */
|
|
"movq %%mm1, %%mm6 \n\t" /* mm6 = u17 */
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|
|
|
"paddsw 2*8*2(%1), %%mm2 \n\t" /* mm2 = u26 */
|
|
"paddsw %%mm7, %%mm6 \n\t" /* mm6 = b0 */
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|
|
|
"psubsw %%mm7, %%mm1 \n\t" /* mm1 = u12 */
|
|
"movq %%mm1, %%mm7 \n\t" /* mm7 = u12 */
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|
|
|
"movq 0*8(%1), %%mm3 \n\t" /* mm3 = x0 */
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|
"paddsw %%mm5, %%mm1 \n\t" /* mm1 = u12+v12 */
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|
|
|
"movq 24(%0), %%mm0 \n\t" /* mm0 = C4/2 */
|
|
"psubsw %%mm5, %%mm7 \n\t" /* mm7 = u12-v12 */
|
|
|
|
"movq %%mm6, 5*8*2(%1)\n\t" /* save b0 in scratch1 */
|
|
"pmulhw %%mm0, %%mm1 \n\t" /* mm1 = b1/2 */
|
|
|
|
"movq %%mm4, %%mm6 \n\t" /* mm6 = v26 */
|
|
"pmulhw %%mm0, %%mm7 \n\t" /* mm7 = b2/2 */
|
|
|
|
"movq 4*8*2(%1), %%mm5 \n\t" /* mm5 = x4 */
|
|
"movq %%mm3, %%mm0 \n\t" /* mm0 = x0 */
|
|
|
|
"psubsw %%mm5, %%mm3 \n\t" /* mm3 = v04 */
|
|
"paddsw %%mm5, %%mm0 \n\t" /* mm0 = u04 */
|
|
|
|
"paddsw %%mm3, %%mm4 \n\t" /* mm4 = a1 */
|
|
"movq %%mm0, %%mm5 \n\t" /* mm5 = u04 */
|
|
|
|
"psubsw %%mm6, %%mm3 \n\t" /* mm3 = a2 */
|
|
"paddsw %%mm2, %%mm5 \n\t" /* mm5 = a0 */
|
|
|
|
"paddsw %%mm1, %%mm1 \n\t" /* mm1 = b1 */
|
|
"psubsw %%mm2, %%mm0 \n\t" /* mm0 = a3 */
|
|
|
|
"paddsw %%mm7, %%mm7 \n\t" /* mm7 = b2 */
|
|
"movq %%mm3, %%mm2 \n\t" /* mm2 = a2 */
|
|
|
|
"movq %%mm4, %%mm6 \n\t" /* mm6 = a1 */
|
|
"paddsw %%mm7, %%mm3 \n\t" /* mm3 = a2+b2 */
|
|
|
|
"psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm3\n\t" /* mm3 = y2 */
|
|
"paddsw %%mm1, %%mm4\n\t" /* mm4 = a1+b1 */
|
|
|
|
"psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm4\n\t" /* mm4 = y1 */
|
|
"psubsw %%mm1, %%mm6 \n\t" /* mm6 = a1-b1 */
|
|
|
|
"movq 5*8*2(%1), %%mm1 \n\t" /* mm1 = b0 */
|
|
"psubsw %%mm7, %%mm2 \n\t" /* mm2 = a2-b2 */
|
|
|
|
"psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm6\n\t" /* mm6 = y6 */
|
|
"movq %%mm5, %%mm7 \n\t" /* mm7 = a0 */
|
|
|
|
"movq %%mm4, 1*8*2(%1)\n\t" /* save y1 */
|
|
"psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm2\n\t" /* mm2 = y5 */
|
|
|
|
"movq %%mm3, 2*8*2(%1)\n\t" /* save y2 */
|
|
"paddsw %%mm1, %%mm5 \n\t" /* mm5 = a0+b0 */
|
|
|
|
"movq 3*8*2(%1), %%mm4 \n\t" /* mm4 = b3 */
|
|
"psubsw %%mm1, %%mm7 \n\t" /* mm7 = a0-b0 */
|
|
|
|
"psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm5\n\t" /* mm5 = y0 */
|
|
"movq %%mm0, %%mm3 \n\t" /* mm3 = a3 */
|
|
|
|
"movq %%mm2, 5*8*2(%1)\n\t" /* save y5 */
|
|
"psubsw %%mm4, %%mm3 \n\t" /* mm3 = a3-b3 */
|
|
|
|
"psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm7\n\t" /* mm7 = y7 */
|
|
"paddsw %%mm0, %%mm4 \n\t" /* mm4 = a3+b3 */
|
|
|
|
"movq %%mm5, 0*8*2(%1)\n\t" /* save y0 */
|
|
"psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm3\n\t" /* mm3 = y4 */
|
|
|
|
"movq %%mm6, 6*8*2(%1)\n\t" /* save y6 */
|
|
"psraw $" AV_STRINGIFY(COL_SHIFT) ", %%mm4\n\t" /* mm4 = y3 */
|
|
|
|
"movq %%mm7, 7*8*2(%1)\n\t" /* save y7 */
|
|
|
|
"movq %%mm3, 4*8*2(%1)\n\t" /* save y4 */
|
|
|
|
"movq %%mm4, 3*8*2(%1)\n\t" /* save y3 */
|
|
:: "r" (t1_vector), "r" (col+offset)
|
|
);
|
|
|
|
#undef T1
|
|
#undef T2
|
|
#undef T3
|
|
#undef C4
|
|
}
|
|
|
|
|
|
DECLARE_ALIGNED(8, static const int32_t, rounder0)[] =
|
|
rounder ((1 << (COL_SHIFT - 1)) - 0.5);
|
|
DECLARE_ALIGNED(8, static const int32_t, rounder4)[] = rounder (0);
|
|
DECLARE_ALIGNED(8, static const int32_t, rounder1)[] =
|
|
rounder (1.25683487303); /* C1*(C1/C4+C1+C7)/2 */
|
|
DECLARE_ALIGNED(8, static const int32_t, rounder7)[] =
|
|
rounder (-0.25); /* C1*(C7/C4+C7-C1)/2 */
|
|
DECLARE_ALIGNED(8, static const int32_t, rounder2)[] =
|
|
rounder (0.60355339059); /* C2 * (C6+C2)/2 */
|
|
DECLARE_ALIGNED(8, static const int32_t, rounder6)[] =
|
|
rounder (-0.25); /* C2 * (C6-C2)/2 */
|
|
DECLARE_ALIGNED(8, static const int32_t, rounder3)[] =
|
|
rounder (0.087788325588); /* C3*(-C3/C4+C3+C5)/2 */
|
|
DECLARE_ALIGNED(8, static const int32_t, rounder5)[] =
|
|
rounder (-0.441341716183); /* C3*(-C5/C4+C5-C3)/2 */
|
|
|
|
#undef COL_SHIFT
|
|
#undef ROW_SHIFT
|
|
|
|
#define declare_idct(idct,table,idct_row_head,idct_row,idct_row_tail,idct_row_mid) \
|
|
void idct (int16_t * const block) \
|
|
{ \
|
|
DECLARE_ALIGNED(16, static const int16_t, table04)[] = \
|
|
table (22725, 21407, 19266, 16384, 12873, 8867, 4520); \
|
|
DECLARE_ALIGNED(16, static const int16_t, table17)[] = \
|
|
table (31521, 29692, 26722, 22725, 17855, 12299, 6270); \
|
|
DECLARE_ALIGNED(16, static const int16_t, table26)[] = \
|
|
table (29692, 27969, 25172, 21407, 16819, 11585, 5906); \
|
|
DECLARE_ALIGNED(16, static const int16_t, table35)[] = \
|
|
table (26722, 25172, 22654, 19266, 15137, 10426, 5315); \
|
|
\
|
|
idct_row_head (block, 0*8, table04); \
|
|
idct_row (table04, rounder0); \
|
|
idct_row_mid (block, 0*8, 4*8, table04); \
|
|
idct_row (table04, rounder4); \
|
|
idct_row_mid (block, 4*8, 1*8, table17); \
|
|
idct_row (table17, rounder1); \
|
|
idct_row_mid (block, 1*8, 7*8, table17); \
|
|
idct_row (table17, rounder7); \
|
|
idct_row_mid (block, 7*8, 2*8, table26); \
|
|
idct_row (table26, rounder2); \
|
|
idct_row_mid (block, 2*8, 6*8, table26); \
|
|
idct_row (table26, rounder6); \
|
|
idct_row_mid (block, 6*8, 3*8, table35); \
|
|
idct_row (table35, rounder3); \
|
|
idct_row_mid (block, 3*8, 5*8, table35); \
|
|
idct_row (table35, rounder5); \
|
|
idct_row_tail (block, 5*8); \
|
|
\
|
|
idct_col (block, 0); \
|
|
idct_col (block, 4); \
|
|
}
|
|
|
|
declare_idct (ff_mmxext_idct, mmxext_table,
|
|
mmxext_row_head, mmxext_row, mmxext_row_tail, mmxext_row_mid)
|
|
|
|
declare_idct (ff_mmx_idct, mmx_table,
|
|
mmx_row_head, mmx_row, mmx_row_tail, mmx_row_mid)
|
|
|