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Diffstat (limited to 'libavcodec/x86/idct_mmx.c')
| -rw-r--r-- | libavcodec/x86/idct_mmx.c | 632 |
1 files changed, 632 insertions, 0 deletions
diff --git a/libavcodec/x86/idct_mmx.c b/libavcodec/x86/idct_mmx.c new file mode 100644 index 0000000..4b92f5c --- /dev/null +++ b/libavcodec/x86/idct_mmx.c @@ -0,0 +1,632 @@ +/* + * Copyright (C) 1999-2001 Aaron Holtzman <aholtzma@ess.engr.uvic.ca> + * + * This file is part of mpeg2dec, a free MPEG-2 video stream decoder. + * See http://libmpeg2.sourceforge.net/ for updates. + * + * mpeg2dec is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * mpeg2dec is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with mpeg2dec; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/common.h" +#include "libavcodec/dsputil.h" + +#include "libavutil/x86/asm.h" +#include "dsputil_mmx.h" + +#if HAVE_INLINE_ASM + +#define ROW_SHIFT 11 +#define COL_SHIFT 6 + +#define round(bias) ((int)(((bias)+0.5) * (1<<ROW_SHIFT))) +#define rounder(bias) {round (bias), round (bias)} + + +#if 0 +/* C row IDCT - it is just here to document the MMXEXT and MMX versions */ +static inline void idct_row (int16_t * row, int offset, + int16_t * table, int32_t * rounder) +{ + int C1, C2, C3, C4, C5, C6, C7; + int a0, a1, a2, a3, b0, b1, b2, b3; + + row += offset; + + C1 = table[1]; + C2 = table[2]; + C3 = table[3]; + C4 = table[4]; + C5 = table[5]; + C6 = table[6]; + C7 = table[7]; + + a0 = C4*row[0] + C2*row[2] + C4*row[4] + C6*row[6] + *rounder; + a1 = C4*row[0] + C6*row[2] - C4*row[4] - C2*row[6] + *rounder; + a2 = C4*row[0] - C6*row[2] - C4*row[4] + C2*row[6] + *rounder; + a3 = C4*row[0] - C2*row[2] + C4*row[4] - C6*row[6] + *rounder; + + b0 = C1*row[1] + C3*row[3] + C5*row[5] + C7*row[7]; + b1 = C3*row[1] - C7*row[3] - C1*row[5] - C5*row[7]; + b2 = C5*row[1] - C1*row[3] + C7*row[5] + C3*row[7]; + b3 = C7*row[1] - C5*row[3] + C3*row[5] - C1*row[7]; + + row[0] = (a0 + b0) >> ROW_SHIFT; + row[1] = (a1 + b1) >> ROW_SHIFT; + row[2] = (a2 + b2) >> ROW_SHIFT; + row[3] = (a3 + b3) >> ROW_SHIFT; + row[4] = (a3 - b3) >> ROW_SHIFT; + row[5] = (a2 - b2) >> ROW_SHIFT; + row[6] = (a1 - b1) >> ROW_SHIFT; + row[7] = (a0 - b0) >> ROW_SHIFT; +} +#endif + + +/* MMXEXT row IDCT */ + +#define mmxext_table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, -c4, -c2, \ + c4, c6, c4, c6, \ + c1, c3, -c1, -c5, \ + c5, c7, c3, -c7, \ + c4, -c6, c4, -c6, \ + -c4, c2, c4, -c2, \ + c5, -c1, c3, -c1, \ + c7, c3, c7, -c5 } + +static inline void mmxext_row_head (int16_t * const row, const int offset, + const int16_t * const table) +{ + __asm__ volatile( + "movq (%0), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */ + + "movq 8(%0), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */ + "movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */ + + "movq (%1), %%mm3 \n\t" /* mm3 = -C2 -C4 C2 C4 */ + "movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */ + + "movq 8(%1), %%mm4 \n\t" /* mm4 = C6 C4 C6 C4 */ + "pmaddwd %%mm0, %%mm3 \n\t" /* mm3 = -C4*x4-C2*x6 C4*x0+C2*x2 */ + + "pshufw $0x4e, %%mm2, %%mm2 \n\t" /* mm2 = x2 x0 x6 x4 */ + :: "r" ((row+offset)), "r" (table) + ); +} + +static inline void mmxext_row (const int16_t * const table, + const int32_t * const rounder) +{ + __asm__ volatile ( + "movq 16(%0), %%mm1 \n\t" /* mm1 = -C5 -C1 C3 C1 */ + "pmaddwd %%mm2, %%mm4 \n\t" /* mm4 = C4*x0+C6*x2 C4*x4+C6*x6 */ + + "pmaddwd 32(%0), %%mm0 \n\t" /* mm0 = C4*x4-C6*x6 C4*x0-C6*x2 */ + "pshufw $0x4e, %%mm6, %%mm6 \n\t" /* mm6 = x3 x1 x7 x5 */ + + "movq 24(%0), %%mm7 \n\t" /* mm7 = -C7 C3 C7 C5 */ + "pmaddwd %%mm5, %%mm1 \n\t" /* mm1= -C1*x5-C5*x7 C1*x1+C3*x3 */ + + "paddd (%1), %%mm3 \n\t" /* mm3 += rounder */ + "pmaddwd %%mm6, %%mm7 \n\t" /* mm7 = C3*x1-C7*x3 C5*x5+C7*x7 */ + + "pmaddwd 40(%0), %%mm2 \n\t" /* mm2= C4*x0-C2*x2 -C4*x4+C2*x6 */ + "paddd %%mm4, %%mm3 \n\t" /* mm3 = a1 a0 + rounder */ + + "pmaddwd 48(%0), %%mm5 \n\t" /* mm5 = C3*x5-C1*x7 C5*x1-C1*x3 */ + "movq %%mm3, %%mm4 \n\t" /* mm4 = a1 a0 + rounder */ + + "pmaddwd 56(%0), %%mm6 \n\t" /* mm6 = C7*x1-C5*x3 C7*x5+C3*x7 */ + "paddd %%mm7, %%mm1 \n\t" /* mm1 = b1 b0 */ + + "paddd (%1), %%mm0 \n\t" /* mm0 += rounder */ + "psubd %%mm1, %%mm3 \n\t" /* mm3 = a1-b1 a0-b0 + rounder */ + + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm3 \n\t" /* mm3 = y6 y7 */ + "paddd %%mm4, %%mm1 \n\t" /* mm1 = a1+b1 a0+b0 + rounder */ + + "paddd %%mm2, %%mm0 \n\t" /* mm0 = a3 a2 + rounder */ + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm1 \n\t" /* mm1 = y1 y0 */ + + "paddd %%mm6, %%mm5 \n\t" /* mm5 = b3 b2 */ + "movq %%mm0, %%mm4 \n\t" /* mm4 = a3 a2 + rounder */ + + "paddd %%mm5, %%mm0 \n\t" /* mm0 = a3+b3 a2+b2 + rounder */ + "psubd %%mm5, %%mm4 \n\t" /* mm4 = a3-b3 a2-b2 + rounder */ + : : "r" (table), "r" (rounder)); +} + +static inline void mmxext_row_tail (int16_t * const row, const int store) +{ + __asm__ volatile ( + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */ + + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm4 \n\t" /* mm4 = y4 y5 */ + + "packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */ + + "packssdw %%mm3, %%mm4 \n\t" /* mm4 = y6 y7 y4 y5 */ + + "movq %%mm1, (%0) \n\t" /* save y3 y2 y1 y0 */ + "pshufw $0xb1, %%mm4, %%mm4 \n\t" /* mm4 = y7 y6 y5 y4 */ + + /* slot */ + + "movq %%mm4, 8(%0) \n\t" /* save y7 y6 y5 y4 */ + :: "r" (row+store) + ); +} + +static inline void mmxext_row_mid (int16_t * const row, const int store, + const int offset, + const int16_t * const table) +{ + __asm__ volatile ( + "movq (%0,%1), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */ + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */ + + "movq 8(%0,%1), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */ + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm4 \n\t" /* mm4 = y4 y5 */ + + "packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */ + "movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */ + + "packssdw %%mm3, %%mm4 \n\t" /* mm4 = y6 y7 y4 y5 */ + "movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */ + + "movq %%mm1, (%0,%2) \n\t" /* save y3 y2 y1 y0 */ + "pshufw $0xb1, %%mm4, %%mm4\n\t" /* mm4 = y7 y6 y5 y4 */ + + "movq (%3), %%mm3 \n\t" /* mm3 = -C2 -C4 C2 C4 */ + "movq %%mm4, 8(%0,%2) \n\t" /* save y7 y6 y5 y4 */ + + "pmaddwd %%mm0, %%mm3 \n\t" /* mm3= -C4*x4-C2*x6 C4*x0+C2*x2 */ + + "movq 8(%3), %%mm4 \n\t" /* mm4 = C6 C4 C6 C4 */ + "pshufw $0x4e, %%mm2, %%mm2\n\t" /* mm2 = x2 x0 x6 x4 */ + :: "r" (row), "r" ((x86_reg) (2*offset)), "r" ((x86_reg) (2*store)), "r" (table) + ); +} + + +/* MMX row IDCT */ + +#define mmx_table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, c4, c6, \ + c4, c6, -c4, -c2, \ + c1, c3, c3, -c7, \ + c5, c7, -c1, -c5, \ + c4, -c6, c4, -c2, \ + -c4, c2, c4, -c6, \ + c5, -c1, c7, -c5, \ + c7, c3, c3, -c1 } + +static inline void mmx_row_head (int16_t * const row, const int offset, + const int16_t * const table) +{ + __asm__ volatile ( + "movq (%0), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */ + + "movq 8(%0), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */ + "movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */ + + "movq (%1), %%mm3 \n\t" /* mm3 = C6 C4 C2 C4 */ + "movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */ + + "punpckldq %%mm0, %%mm0 \n\t" /* mm0 = x2 x0 x2 x0 */ + + "movq 8(%1), %%mm4 \n\t" /* mm4 = -C2 -C4 C6 C4 */ + "pmaddwd %%mm0, %%mm3 \n\t" /* mm3 = C4*x0+C6*x2 C4*x0+C2*x2 */ + + "movq 16(%1), %%mm1 \n\t" /* mm1 = -C7 C3 C3 C1 */ + "punpckhdq %%mm2, %%mm2 \n\t" /* mm2 = x6 x4 x6 x4 */ + :: "r" ((row+offset)), "r" (table) + ); +} + +static inline void mmx_row (const int16_t * const table, + const int32_t * const rounder) +{ + __asm__ volatile ( + "pmaddwd %%mm2, %%mm4 \n\t" /* mm4 = -C4*x4-C2*x6 C4*x4+C6*x6 */ + "punpckldq %%mm5, %%mm5 \n\t" /* mm5 = x3 x1 x3 x1 */ + + "pmaddwd 32(%0), %%mm0 \n\t" /* mm0 = C4*x0-C2*x2 C4*x0-C6*x2 */ + "punpckhdq %%mm6, %%mm6 \n\t" /* mm6 = x7 x5 x7 x5 */ + + "movq 24(%0), %%mm7 \n\t" /* mm7 = -C5 -C1 C7 C5 */ + "pmaddwd %%mm5, %%mm1 \n\t" /* mm1 = C3*x1-C7*x3 C1*x1+C3*x3 */ + + "paddd (%1), %%mm3 \n\t" /* mm3 += rounder */ + "pmaddwd %%mm6, %%mm7 \n\t" /* mm7 = -C1*x5-C5*x7 C5*x5+C7*x7 */ + + "pmaddwd 40(%0), %%mm2 \n\t" /* mm2 = C4*x4-C6*x6 -C4*x4+C2*x6 */ + "paddd %%mm4, %%mm3 \n\t" /* mm3 = a1 a0 + rounder */ + + "pmaddwd 48(%0), %%mm5 \n\t" /* mm5 = C7*x1-C5*x3 C5*x1-C1*x3 */ + "movq %%mm3, %%mm4 \n\t" /* mm4 = a1 a0 + rounder */ + + "pmaddwd 56(%0), %%mm6 \n\t" /* mm6 = C3*x5-C1*x7 C7*x5+C3*x7 */ + "paddd %%mm7, %%mm1 \n\t" /* mm1 = b1 b0 */ + + "paddd (%1), %%mm0 \n\t" /* mm0 += rounder */ + "psubd %%mm1, %%mm3 \n\t" /* mm3 = a1-b1 a0-b0 + rounder */ + + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm3 \n\t" /* mm3 = y6 y7 */ + "paddd %%mm4, %%mm1 \n\t" /* mm1 = a1+b1 a0+b0 + rounder */ + + "paddd %%mm2, %%mm0 \n\t" /* mm0 = a3 a2 + rounder */ + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm1 \n\t" /* mm1 = y1 y0 */ + + "paddd %%mm6, %%mm5 \n\t" /* mm5 = b3 b2 */ + "movq %%mm0, %%mm7 \n\t" /* mm7 = a3 a2 + rounder */ + + "paddd %%mm5, %%mm0 \n\t" /* mm0 = a3+b3 a2+b2 + rounder */ + "psubd %%mm5, %%mm7 \n\t" /* mm7 = a3-b3 a2-b2 + rounder */ + :: "r" (table), "r" (rounder) + ); +} + +static inline void mmx_row_tail (int16_t * const row, const int store) +{ + __asm__ volatile ( + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */ + + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm7 \n\t" /* mm7 = y4 y5 */ + + "packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */ + + "packssdw %%mm3, %%mm7 \n\t" /* mm7 = y6 y7 y4 y5 */ + + "movq %%mm1, (%0) \n\t" /* save y3 y2 y1 y0 */ + "movq %%mm7, %%mm4 \n\t" /* mm4 = y6 y7 y4 y5 */ + + "pslld $16, %%mm7 \n\t" /* mm7 = y7 0 y5 0 */ + + "psrld $16, %%mm4 \n\t" /* mm4 = 0 y6 0 y4 */ + + "por %%mm4, %%mm7 \n\t" /* mm7 = y7 y6 y5 y4 */ + + /* slot */ + + "movq %%mm7, 8(%0) \n\t" /* save y7 y6 y5 y4 */ + :: "r" (row+store) + ); +} + +static inline void mmx_row_mid (int16_t * const row, const int store, + const int offset, const int16_t * const table) +{ + + __asm__ volatile ( + "movq (%0,%1), %%mm2 \n\t" /* mm2 = x6 x4 x2 x0 */ + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm0 \n\t" /* mm0 = y3 y2 */ + + "movq 8(%0,%1), %%mm5 \n\t" /* mm5 = x7 x5 x3 x1 */ + "psrad $" AV_STRINGIFY(ROW_SHIFT) ", %%mm7 \n\t" /* mm7 = y4 y5 */ + + "packssdw %%mm0, %%mm1 \n\t" /* mm1 = y3 y2 y1 y0 */ + "movq %%mm5, %%mm6 \n\t" /* mm6 = x7 x5 x3 x1 */ + + "packssdw %%mm3, %%mm7 \n\t" /* mm7 = y6 y7 y4 y5 */ + "movq %%mm2, %%mm0 \n\t" /* mm0 = x6 x4 x2 x0 */ + + "movq %%mm1, (%0,%2) \n\t" /* save y3 y2 y1 y0 */ + "movq %%mm7, %%mm1 \n\t" /* mm1 = y6 y7 y4 y5 */ + + "punpckldq %%mm0, %%mm0 \n\t" /* mm0 = x2 x0 x2 x0 */ + "psrld $16, %%mm7 \n\t" /* mm7 = 0 y6 0 y4 */ + + "movq (%3), %%mm3 \n\t" /* mm3 = C6 C4 C2 C4 */ + "pslld $16, %%mm1 \n\t" /* mm1 = y7 0 y5 0 */ + + "movq 8(%3), %%mm4 \n\t" /* mm4 = -C2 -C4 C6 C4 */ + "por %%mm1, %%mm7 \n\t" /* mm7 = y7 y6 y5 y4 */ + + "movq 16(%3), %%mm1 \n\t" /* mm1 = -C7 C3 C3 C1 */ + "punpckhdq %%mm2, %%mm2 \n\t" /* mm2 = x6 x4 x6 x4 */ + + "movq %%mm7, 8(%0,%2) \n\t" /* save y7 y6 y5 y4 */ + "pmaddwd %%mm0, %%mm3 \n\t" /* mm3 = C4*x0+C6*x2 C4*x0+C2*x2 */ + : : "r" (row), "r" ((x86_reg) (2*offset)), "r" ((x86_reg) (2*store)), "r" (table) + ); +} + + +#if 0 +/* C column IDCT - it is just here to document the MMXEXT and MMX versions */ +static inline void idct_col (int16_t * col, int offset) +{ +/* multiplication - as implemented on mmx */ +#define F(c,x) (((c) * (x)) >> 16) + +/* saturation - it helps us handle torture test cases */ +#define S(x) (((x)>32767) ? 32767 : ((x)<-32768) ? -32768 : (x)) + + int16_t x0, x1, x2, x3, x4, x5, x6, x7; + int16_t y0, y1, y2, y3, y4, y5, y6, y7; + int16_t a0, a1, a2, a3, b0, b1, b2, b3; + int16_t u04, v04, u26, v26, u17, v17, u35, v35, u12, v12; + + col += offset; + + x0 = col[0*8]; + x1 = col[1*8]; + x2 = col[2*8]; + x3 = col[3*8]; + x4 = col[4*8]; + x5 = col[5*8]; + x6 = col[6*8]; + x7 = col[7*8]; + + u04 = S (x0 + x4); + v04 = S (x0 - x4); + u26 = S (F (T2, x6) + x2); + v26 = S (F (T2, x2) - x6); + + a0 = S (u04 + u26); + a1 = S (v04 + v26); + a2 = S (v04 - v26); + a3 = S (u04 - u26); + + u17 = S (F (T1, x7) + x1); + v17 = S (F (T1, x1) - x7); + u35 = S (F (T3, x5) + x3); + v35 = S (F (T3, x3) - x5); + + b0 = S (u17 + u35); + b3 = S (v17 - v35); + u12 = S (u17 - u35); + v12 = S (v17 + v35); + u12 = S (2 * F (C4, u12)); + v12 = S (2 * F (C4, v12)); + b1 = S (u12 + v12); + b2 = S (u12 - v12); + + y0 = S (a0 + b0) >> COL_SHIFT; + y1 = S (a1 + b1) >> COL_SHIFT; + y2 = S (a2 + b2) >> COL_SHIFT; + y3 = S (a3 + b3) >> COL_SHIFT; + + y4 = S (a3 - b3) >> COL_SHIFT; + y5 = S (a2 - b2) >> COL_SHIFT; + y6 = S (a1 - b1) >> COL_SHIFT; + y7 = S (a0 - b0) >> COL_SHIFT; + + col[0*8] = y0; + col[1*8] = y1; + col[2*8] = y2; + col[3*8] = y3; + col[4*8] = y4; + col[5*8] = y5; + col[6*8] = y6; + col[7*8] = y7; +} +#endif + + +/* MMX column IDCT */ +static inline void idct_col (int16_t * const col, const int offset) +{ +#define T1 13036 +#define T2 27146 +#define T3 43790 +#define C4 23170 + + DECLARE_ALIGNED(8, static const short, t1_vector)[] = { + T1,T1,T1,T1, + T2,T2,T2,T2, + T3,T3,T3,T3, + C4,C4,C4,C4 + }; + + /* column code adapted from Peter Gubanov */ + /* http://www.elecard.com/peter/idct.shtml */ + + __asm__ volatile ( + "movq (%0), %%mm0 \n\t" /* mm0 = T1 */ + + "movq 2*8(%1), %%mm1 \n\t" /* mm1 = x1 */ + "movq %%mm0, %%mm2 \n\t" /* mm2 = T1 */ + + "movq 7*2*8(%1), %%mm4 \n\t" /* mm4 = x7 */ + "pmulhw %%mm1, %%mm0 \n\t" /* mm0 = T1*x1 */ + + "movq 16(%0), %%mm5 \n\t" /* mm5 = T3 */ + "pmulhw %%mm4, %%mm2 \n\t" /* mm2 = T1*x7 */ + + "movq 2*5*8(%1), %%mm6 \n\t" /* mm6 = x5 */ + "movq %%mm5, %%mm7 \n\t" /* mm7 = T3-1 */ + + "movq 3*8*2(%1), %%mm3 \n\t" /* mm3 = x3 */ + "psubsw %%mm4, %%mm0 \n\t" /* mm0 = v17 */ + + "movq 8(%0), %%mm4 \n\t" /* mm4 = T2 */ + "pmulhw %%mm3, %%mm5 \n\t" /* mm5 = (T3-1)*x3 */ + + "paddsw %%mm2, %%mm1 \n\t" /* mm1 = u17 */ + "pmulhw %%mm6, %%mm7 \n\t" /* mm7 = (T3-1)*x5 */ + + /* slot */ + + "movq %%mm4, %%mm2 \n\t" /* mm2 = T2 */ + "paddsw %%mm3, %%mm5 \n\t" /* mm5 = T3*x3 */ + + "pmulhw 2*8*2(%1), %%mm4 \n\t" /* mm4 = T2*x2 */ + "paddsw %%mm6, %%mm7 \n\t" /* mm7 = T3*x5 */ + + "psubsw %%mm6, %%mm5 \n\t" /* mm5 = v35 */ + "paddsw %%mm3, %%mm7 \n\t" /* mm7 = u35 */ + + "movq 6*8*2(%1), %%mm3 \n\t" /* mm3 = x6 */ + "movq %%mm0, %%mm6 \n\t" /* mm6 = v17 */ + + "pmulhw %%mm3, %%mm2 \n\t" /* mm2 = T2*x6 */ + "psubsw %%mm5, %%mm0 \n\t" /* mm0 = b3 */ + + "psubsw %%mm3, %%mm4 \n\t" /* mm4 = v26 */ + "paddsw %%mm6, %%mm5 \n\t" /* mm5 = v12 */ + + "movq %%mm0, 3*8*2(%1)\n\t" /* save b3 in scratch0 */ + "movq %%mm1, %%mm6 \n\t" /* mm6 = u17 */ + + "paddsw 2*8*2(%1), %%mm2 \n\t" /* mm2 = u26 */ + "paddsw %%mm7, %%mm6 \n\t" /* mm6 = b0 */ + + "psubsw %%mm7, %%mm1 \n\t" /* mm1 = u12 */ + "movq %%mm1, %%mm7 \n\t" /* mm7 = u12 */ + + "movq 0*8(%1), %%mm3 \n\t" /* mm3 = x0 */ + "paddsw %%mm5, %%mm1 \n\t" /* mm1 = u12+v12 */ + + "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) + +#endif /* HAVE_INLINE_ASM */ |
