mirror of https://git.videolan.org/git/ffmpeg.git
378 lines
15 KiB
C
378 lines
15 KiB
C
/*
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* MMX optimized DSP utils
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* Copyright (c) 2000, 2001 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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*
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* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; 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 "config.h"
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#include "libavutil/cpu.h"
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#include "libavutil/x86/asm.h"
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#include "dsputil_x86.h"
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#include "inline_asm.h"
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#if HAVE_INLINE_ASM
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void ff_put_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels,
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int line_size)
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{
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const int16_t *p;
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uint8_t *pix;
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/* read the pixels */
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p = block;
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pix = pixels;
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/* unrolled loop */
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__asm__ volatile (
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"movq (%3), %%mm0 \n\t"
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"movq 8(%3), %%mm1 \n\t"
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"movq 16(%3), %%mm2 \n\t"
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"movq 24(%3), %%mm3 \n\t"
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"movq 32(%3), %%mm4 \n\t"
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"movq 40(%3), %%mm5 \n\t"
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"movq 48(%3), %%mm6 \n\t"
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"movq 56(%3), %%mm7 \n\t"
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"packuswb %%mm1, %%mm0 \n\t"
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"packuswb %%mm3, %%mm2 \n\t"
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"packuswb %%mm5, %%mm4 \n\t"
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"packuswb %%mm7, %%mm6 \n\t"
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"movq %%mm0, (%0) \n\t"
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"movq %%mm2, (%0, %1) \n\t"
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"movq %%mm4, (%0, %1, 2) \n\t"
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"movq %%mm6, (%0, %2) \n\t"
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:: "r" (pix), "r" ((x86_reg) line_size), "r" ((x86_reg) line_size * 3),
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"r" (p)
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: "memory");
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pix += line_size * 4;
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p += 32;
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// if here would be an exact copy of the code above
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// compiler would generate some very strange code
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// thus using "r"
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__asm__ volatile (
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"movq (%3), %%mm0 \n\t"
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"movq 8(%3), %%mm1 \n\t"
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"movq 16(%3), %%mm2 \n\t"
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"movq 24(%3), %%mm3 \n\t"
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"movq 32(%3), %%mm4 \n\t"
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"movq 40(%3), %%mm5 \n\t"
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"movq 48(%3), %%mm6 \n\t"
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"movq 56(%3), %%mm7 \n\t"
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"packuswb %%mm1, %%mm0 \n\t"
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"packuswb %%mm3, %%mm2 \n\t"
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"packuswb %%mm5, %%mm4 \n\t"
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"packuswb %%mm7, %%mm6 \n\t"
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"movq %%mm0, (%0) \n\t"
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"movq %%mm2, (%0, %1) \n\t"
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"movq %%mm4, (%0, %1, 2) \n\t"
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"movq %%mm6, (%0, %2) \n\t"
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:: "r" (pix), "r" ((x86_reg) line_size), "r" ((x86_reg) line_size * 3),
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"r" (p)
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: "memory");
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}
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#define put_signed_pixels_clamped_mmx_half(off) \
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"movq "#off"(%2), %%mm1 \n\t" \
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"movq 16 + "#off"(%2), %%mm2 \n\t" \
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"movq 32 + "#off"(%2), %%mm3 \n\t" \
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"movq 48 + "#off"(%2), %%mm4 \n\t" \
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"packsswb 8 + "#off"(%2), %%mm1 \n\t" \
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"packsswb 24 + "#off"(%2), %%mm2 \n\t" \
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"packsswb 40 + "#off"(%2), %%mm3 \n\t" \
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"packsswb 56 + "#off"(%2), %%mm4 \n\t" \
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"paddb %%mm0, %%mm1 \n\t" \
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"paddb %%mm0, %%mm2 \n\t" \
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"paddb %%mm0, %%mm3 \n\t" \
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"paddb %%mm0, %%mm4 \n\t" \
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"movq %%mm1, (%0) \n\t" \
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"movq %%mm2, (%0, %3) \n\t" \
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"movq %%mm3, (%0, %3, 2) \n\t" \
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"movq %%mm4, (%0, %1) \n\t"
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void ff_put_signed_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels,
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int line_size)
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{
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x86_reg line_skip = line_size;
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x86_reg line_skip3;
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__asm__ volatile (
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"movq "MANGLE(ff_pb_80)", %%mm0 \n\t"
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"lea (%3, %3, 2), %1 \n\t"
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put_signed_pixels_clamped_mmx_half(0)
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"lea (%0, %3, 4), %0 \n\t"
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put_signed_pixels_clamped_mmx_half(64)
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: "+&r" (pixels), "=&r" (line_skip3)
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: "r" (block), "r" (line_skip)
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: "memory");
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}
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void ff_add_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels,
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int line_size)
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{
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const int16_t *p;
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uint8_t *pix;
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int i;
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/* read the pixels */
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p = block;
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pix = pixels;
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MOVQ_ZERO(mm7);
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i = 4;
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do {
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__asm__ volatile (
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"movq (%2), %%mm0 \n\t"
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"movq 8(%2), %%mm1 \n\t"
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"movq 16(%2), %%mm2 \n\t"
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"movq 24(%2), %%mm3 \n\t"
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"movq %0, %%mm4 \n\t"
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"movq %1, %%mm6 \n\t"
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"movq %%mm4, %%mm5 \n\t"
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"punpcklbw %%mm7, %%mm4 \n\t"
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"punpckhbw %%mm7, %%mm5 \n\t"
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"paddsw %%mm4, %%mm0 \n\t"
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"paddsw %%mm5, %%mm1 \n\t"
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"movq %%mm6, %%mm5 \n\t"
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"punpcklbw %%mm7, %%mm6 \n\t"
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"punpckhbw %%mm7, %%mm5 \n\t"
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"paddsw %%mm6, %%mm2 \n\t"
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"paddsw %%mm5, %%mm3 \n\t"
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"packuswb %%mm1, %%mm0 \n\t"
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"packuswb %%mm3, %%mm2 \n\t"
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"movq %%mm0, %0 \n\t"
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"movq %%mm2, %1 \n\t"
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: "+m" (*pix), "+m" (*(pix + line_size))
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: "r" (p)
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: "memory");
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pix += line_size * 2;
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p += 16;
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} while (--i);
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}
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/* Draw the edges of width 'w' of an image of size width, height
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* this MMX version can only handle w == 8 || w == 16. */
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void ff_draw_edges_mmx(uint8_t *buf, int wrap, int width, int height,
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int w, int h, int sides)
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{
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uint8_t *ptr, *last_line;
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int i;
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last_line = buf + (height - 1) * wrap;
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/* left and right */
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ptr = buf;
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if (w == 8) {
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__asm__ volatile (
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"1: \n\t"
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"movd (%0), %%mm0 \n\t"
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"punpcklbw %%mm0, %%mm0 \n\t"
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"punpcklwd %%mm0, %%mm0 \n\t"
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"punpckldq %%mm0, %%mm0 \n\t"
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"movq %%mm0, -8(%0) \n\t"
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"movq -8(%0, %2), %%mm1 \n\t"
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"punpckhbw %%mm1, %%mm1 \n\t"
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"punpckhwd %%mm1, %%mm1 \n\t"
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"punpckhdq %%mm1, %%mm1 \n\t"
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"movq %%mm1, (%0, %2) \n\t"
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"add %1, %0 \n\t"
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"cmp %3, %0 \n\t"
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"jb 1b \n\t"
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: "+r" (ptr)
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: "r" ((x86_reg) wrap), "r" ((x86_reg) width),
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"r" (ptr + wrap * height));
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} else {
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__asm__ volatile (
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"1: \n\t"
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"movd (%0), %%mm0 \n\t"
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"punpcklbw %%mm0, %%mm0 \n\t"
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"punpcklwd %%mm0, %%mm0 \n\t"
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"punpckldq %%mm0, %%mm0 \n\t"
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"movq %%mm0, -8(%0) \n\t"
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"movq %%mm0, -16(%0) \n\t"
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"movq -8(%0, %2), %%mm1 \n\t"
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"punpckhbw %%mm1, %%mm1 \n\t"
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"punpckhwd %%mm1, %%mm1 \n\t"
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"punpckhdq %%mm1, %%mm1 \n\t"
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"movq %%mm1, (%0, %2) \n\t"
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"movq %%mm1, 8(%0, %2) \n\t"
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"add %1, %0 \n\t"
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"cmp %3, %0 \n\t"
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"jb 1b \n\t"
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: "+r" (ptr)
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: "r" ((x86_reg) wrap), "r" ((x86_reg) width),
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"r" (ptr + wrap * height));
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}
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/* top and bottom (and hopefully also the corners) */
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if (sides & EDGE_TOP) {
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for (i = 0; i < h; i += 4) {
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ptr = buf - (i + 1) * wrap - w;
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__asm__ volatile (
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"1: \n\t"
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"movq (%1, %0), %%mm0 \n\t"
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"movq %%mm0, (%0) \n\t"
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"movq %%mm0, (%0, %2) \n\t"
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"movq %%mm0, (%0, %2, 2) \n\t"
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"movq %%mm0, (%0, %3) \n\t"
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"add $8, %0 \n\t"
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"cmp %4, %0 \n\t"
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"jb 1b \n\t"
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: "+r" (ptr)
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: "r" ((x86_reg) buf - (x86_reg) ptr - w),
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"r" ((x86_reg) - wrap), "r" ((x86_reg) - wrap * 3),
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"r" (ptr + width + 2 * w));
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}
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}
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if (sides & EDGE_BOTTOM) {
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for (i = 0; i < h; i += 4) {
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ptr = last_line + (i + 1) * wrap - w;
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__asm__ volatile (
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"1: \n\t"
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"movq (%1, %0), %%mm0 \n\t"
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"movq %%mm0, (%0) \n\t"
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"movq %%mm0, (%0, %2) \n\t"
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"movq %%mm0, (%0, %2, 2) \n\t"
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"movq %%mm0, (%0, %3) \n\t"
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"add $8, %0 \n\t"
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"cmp %4, %0 \n\t"
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"jb 1b \n\t"
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: "+r" (ptr)
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: "r" ((x86_reg) last_line - (x86_reg) ptr - w),
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"r" ((x86_reg) wrap), "r" ((x86_reg) wrap * 3),
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"r" (ptr + width + 2 * w));
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}
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}
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}
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void ff_gmc_mmx(uint8_t *dst, uint8_t *src,
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int stride, int h, int ox, int oy,
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int dxx, int dxy, int dyx, int dyy,
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int shift, int r, int width, int height)
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{
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const int w = 8;
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const int ix = ox >> (16 + shift);
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const int iy = oy >> (16 + shift);
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const int oxs = ox >> 4;
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const int oys = oy >> 4;
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const int dxxs = dxx >> 4;
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const int dxys = dxy >> 4;
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const int dyxs = dyx >> 4;
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const int dyys = dyy >> 4;
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const uint16_t r4[4] = { r, r, r, r };
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const uint16_t dxy4[4] = { dxys, dxys, dxys, dxys };
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const uint16_t dyy4[4] = { dyys, dyys, dyys, dyys };
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const uint64_t shift2 = 2 * shift;
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int x, y;
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const int dxw = (dxx - (1 << (16 + shift))) * (w - 1);
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const int dyh = (dyy - (1 << (16 + shift))) * (h - 1);
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const int dxh = dxy * (h - 1);
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const int dyw = dyx * (w - 1);
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if ( // non-constant fullpel offset (3% of blocks)
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((ox ^ (ox + dxw)) | (ox ^ (ox + dxh)) | (ox ^ (ox + dxw + dxh)) |
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(oy ^ (oy + dyw)) | (oy ^ (oy + dyh)) | (oy ^ (oy + dyw + dyh))) >> (16 + shift) ||
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// uses more than 16 bits of subpel mv (only at huge resolution)
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(dxx | dxy | dyx | dyy) & 15 ||
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(unsigned) ix >= width - w ||
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(unsigned) iy >= height - h) {
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// FIXME could still use mmx for some of the rows
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ff_gmc_c(dst, src, stride, h, ox, oy, dxx, dxy, dyx, dyy,
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shift, r, width, height);
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return;
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}
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src += ix + iy * stride;
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__asm__ volatile (
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"movd %0, %%mm6 \n\t"
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"pxor %%mm7, %%mm7 \n\t"
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"punpcklwd %%mm6, %%mm6 \n\t"
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"punpcklwd %%mm6, %%mm6 \n\t"
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:: "r" (1 << shift));
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for (x = 0; x < w; x += 4) {
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uint16_t dx4[4] = { oxs - dxys + dxxs * (x + 0),
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oxs - dxys + dxxs * (x + 1),
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oxs - dxys + dxxs * (x + 2),
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oxs - dxys + dxxs * (x + 3) };
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uint16_t dy4[4] = { oys - dyys + dyxs * (x + 0),
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oys - dyys + dyxs * (x + 1),
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oys - dyys + dyxs * (x + 2),
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oys - dyys + dyxs * (x + 3) };
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for (y = 0; y < h; y++) {
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__asm__ volatile (
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"movq %0, %%mm4 \n\t"
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"movq %1, %%mm5 \n\t"
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"paddw %2, %%mm4 \n\t"
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"paddw %3, %%mm5 \n\t"
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"movq %%mm4, %0 \n\t"
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"movq %%mm5, %1 \n\t"
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"psrlw $12, %%mm4 \n\t"
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"psrlw $12, %%mm5 \n\t"
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: "+m" (*dx4), "+m" (*dy4)
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: "m" (*dxy4), "m" (*dyy4));
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__asm__ volatile (
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"movq %%mm6, %%mm2 \n\t"
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"movq %%mm6, %%mm1 \n\t"
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"psubw %%mm4, %%mm2 \n\t"
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"psubw %%mm5, %%mm1 \n\t"
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"movq %%mm2, %%mm0 \n\t"
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"movq %%mm4, %%mm3 \n\t"
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"pmullw %%mm1, %%mm0 \n\t" // (s - dx) * (s - dy)
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"pmullw %%mm5, %%mm3 \n\t" // dx * dy
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"pmullw %%mm5, %%mm2 \n\t" // (s - dx) * dy
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"pmullw %%mm4, %%mm1 \n\t" // dx * (s - dy)
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"movd %4, %%mm5 \n\t"
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"movd %3, %%mm4 \n\t"
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"punpcklbw %%mm7, %%mm5 \n\t"
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"punpcklbw %%mm7, %%mm4 \n\t"
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"pmullw %%mm5, %%mm3 \n\t" // src[1, 1] * dx * dy
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"pmullw %%mm4, %%mm2 \n\t" // src[0, 1] * (s - dx) * dy
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"movd %2, %%mm5 \n\t"
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"movd %1, %%mm4 \n\t"
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"punpcklbw %%mm7, %%mm5 \n\t"
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"punpcklbw %%mm7, %%mm4 \n\t"
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"pmullw %%mm5, %%mm1 \n\t" // src[1, 0] * dx * (s - dy)
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"pmullw %%mm4, %%mm0 \n\t" // src[0, 0] * (s - dx) * (s - dy)
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"paddw %5, %%mm1 \n\t"
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"paddw %%mm3, %%mm2 \n\t"
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"paddw %%mm1, %%mm0 \n\t"
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"paddw %%mm2, %%mm0 \n\t"
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"psrlw %6, %%mm0 \n\t"
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"packuswb %%mm0, %%mm0 \n\t"
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"movd %%mm0, %0 \n\t"
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: "=m" (dst[x + y * stride])
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: "m" (src[0]), "m" (src[1]),
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"m" (src[stride]), "m" (src[stride + 1]),
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"m" (*r4), "m" (shift2));
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src += stride;
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}
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src += 4 - h * stride;
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}
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}
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#endif /* HAVE_INLINE_ASM */
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