/* * MMX optimized DSP utils * Copyright (c) 2000, 2001 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * MMX optimization by Nick Kurshev */ #include "config.h" #include "libavutil/avassert.h" #include "libavutil/cpu.h" #include "libavutil/x86/asm.h" #include "libavcodec/pixels.h" #include "libavcodec/videodsp.h" #include "dsputil_x86.h" #include "inline_asm.h" #if HAVE_INLINE_ASM void ff_put_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels, int line_size) { const int16_t *p; uint8_t *pix; /* read the pixels */ p = block; pix = pixels; /* unrolled loop */ __asm__ volatile ( "movq (%3), %%mm0 \n\t" "movq 8(%3), %%mm1 \n\t" "movq 16(%3), %%mm2 \n\t" "movq 24(%3), %%mm3 \n\t" "movq 32(%3), %%mm4 \n\t" "movq 40(%3), %%mm5 \n\t" "movq 48(%3), %%mm6 \n\t" "movq 56(%3), %%mm7 \n\t" "packuswb %%mm1, %%mm0 \n\t" "packuswb %%mm3, %%mm2 \n\t" "packuswb %%mm5, %%mm4 \n\t" "packuswb %%mm7, %%mm6 \n\t" "movq %%mm0, (%0) \n\t" "movq %%mm2, (%0, %1) \n\t" "movq %%mm4, (%0, %1, 2) \n\t" "movq %%mm6, (%0, %2) \n\t" :: "r" (pix), "r" ((x86_reg) line_size), "r" ((x86_reg) line_size * 3), "r" (p) : "memory"); pix += line_size * 4; p += 32; // if here would be an exact copy of the code above // compiler would generate some very strange code // thus using "r" __asm__ volatile ( "movq (%3), %%mm0 \n\t" "movq 8(%3), %%mm1 \n\t" "movq 16(%3), %%mm2 \n\t" "movq 24(%3), %%mm3 \n\t" "movq 32(%3), %%mm4 \n\t" "movq 40(%3), %%mm5 \n\t" "movq 48(%3), %%mm6 \n\t" "movq 56(%3), %%mm7 \n\t" "packuswb %%mm1, %%mm0 \n\t" "packuswb %%mm3, %%mm2 \n\t" "packuswb %%mm5, %%mm4 \n\t" "packuswb %%mm7, %%mm6 \n\t" "movq %%mm0, (%0) \n\t" "movq %%mm2, (%0, %1) \n\t" "movq %%mm4, (%0, %1, 2) \n\t" "movq %%mm6, (%0, %2) \n\t" :: "r" (pix), "r" ((x86_reg) line_size), "r" ((x86_reg) line_size * 3), "r" (p) : "memory"); } void ff_add_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels, int line_size) { const int16_t *p; uint8_t *pix; int i; /* read the pixels */ p = block; pix = pixels; MOVQ_ZERO(mm7); i = 4; do { __asm__ volatile ( "movq (%2), %%mm0 \n\t" "movq 8(%2), %%mm1 \n\t" "movq 16(%2), %%mm2 \n\t" "movq 24(%2), %%mm3 \n\t" "movq %0, %%mm4 \n\t" "movq %1, %%mm6 \n\t" "movq %%mm4, %%mm5 \n\t" "punpcklbw %%mm7, %%mm4 \n\t" "punpckhbw %%mm7, %%mm5 \n\t" "paddsw %%mm4, %%mm0 \n\t" "paddsw %%mm5, %%mm1 \n\t" "movq %%mm6, %%mm5 \n\t" "punpcklbw %%mm7, %%mm6 \n\t" "punpckhbw %%mm7, %%mm5 \n\t" "paddsw %%mm6, %%mm2 \n\t" "paddsw %%mm5, %%mm3 \n\t" "packuswb %%mm1, %%mm0 \n\t" "packuswb %%mm3, %%mm2 \n\t" "movq %%mm0, %0 \n\t" "movq %%mm2, %1 \n\t" : "+m" (*pix), "+m" (*(pix + line_size)) : "r" (p) : "memory"); pix += line_size * 2; p += 16; } while (--i); } /* Draw the edges of width 'w' of an image of size width, height * this MMX version can only handle w == 8 || w == 16. */ void ff_draw_edges_mmx(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides) { uint8_t *ptr, *last_line; int i; last_line = buf + (height - 1) * wrap; /* left and right */ ptr = buf; if (w == 8) { __asm__ volatile ( "1: \n\t" "movd (%0), %%mm0 \n\t" "punpcklbw %%mm0, %%mm0 \n\t" "punpcklwd %%mm0, %%mm0 \n\t" "punpckldq %%mm0, %%mm0 \n\t" "movq %%mm0, -8(%0) \n\t" "movq -8(%0, %2), %%mm1 \n\t" "punpckhbw %%mm1, %%mm1 \n\t" "punpckhwd %%mm1, %%mm1 \n\t" "punpckhdq %%mm1, %%mm1 \n\t" "movq %%mm1, (%0, %2) \n\t" "add %1, %0 \n\t" "cmp %3, %0 \n\t" "jb 1b \n\t" : "+r" (ptr) : "r" ((x86_reg) wrap), "r" ((x86_reg) width), "r" (ptr + wrap * height)); } else if (w == 16) { __asm__ volatile ( "1: \n\t" "movd (%0), %%mm0 \n\t" "punpcklbw %%mm0, %%mm0 \n\t" "punpcklwd %%mm0, %%mm0 \n\t" "punpckldq %%mm0, %%mm0 \n\t" "movq %%mm0, -8(%0) \n\t" "movq %%mm0, -16(%0) \n\t" "movq -8(%0, %2), %%mm1 \n\t" "punpckhbw %%mm1, %%mm1 \n\t" "punpckhwd %%mm1, %%mm1 \n\t" "punpckhdq %%mm1, %%mm1 \n\t" "movq %%mm1, (%0, %2) \n\t" "movq %%mm1, 8(%0, %2) \n\t" "add %1, %0 \n\t" "cmp %3, %0 \n\t" "jb 1b \n\t" : "+r"(ptr) : "r"((x86_reg)wrap), "r"((x86_reg)width), "r"(ptr + wrap * height) ); } else { av_assert1(w == 4); __asm__ volatile ( "1: \n\t" "movd (%0), %%mm0 \n\t" "punpcklbw %%mm0, %%mm0 \n\t" "punpcklwd %%mm0, %%mm0 \n\t" "movd %%mm0, -4(%0) \n\t" "movd -4(%0, %2), %%mm1 \n\t" "punpcklbw %%mm1, %%mm1 \n\t" "punpckhwd %%mm1, %%mm1 \n\t" "punpckhdq %%mm1, %%mm1 \n\t" "movd %%mm1, (%0, %2) \n\t" "add %1, %0 \n\t" "cmp %3, %0 \n\t" "jb 1b \n\t" : "+r" (ptr) : "r" ((x86_reg) wrap), "r" ((x86_reg) width), "r" (ptr + wrap * height)); } /* top and bottom (and hopefully also the corners) */ if (sides & EDGE_TOP) { for (i = 0; i < h; i += 4) { ptr = buf - (i + 1) * wrap - w; __asm__ volatile ( "1: \n\t" "movq (%1, %0), %%mm0 \n\t" "movq %%mm0, (%0) \n\t" "movq %%mm0, (%0, %2) \n\t" "movq %%mm0, (%0, %2, 2) \n\t" "movq %%mm0, (%0, %3) \n\t" "add $8, %0 \n\t" "cmp %4, %0 \n\t" "jb 1b \n\t" : "+r" (ptr) : "r" ((x86_reg) buf - (x86_reg) ptr - w), "r" ((x86_reg) - wrap), "r" ((x86_reg) - wrap * 3), "r" (ptr + width + 2 * w)); } } if (sides & EDGE_BOTTOM) { for (i = 0; i < h; i += 4) { ptr = last_line + (i + 1) * wrap - w; __asm__ volatile ( "1: \n\t" "movq (%1, %0), %%mm0 \n\t" "movq %%mm0, (%0) \n\t" "movq %%mm0, (%0, %2) \n\t" "movq %%mm0, (%0, %2, 2) \n\t" "movq %%mm0, (%0, %3) \n\t" "add $8, %0 \n\t" "cmp %4, %0 \n\t" "jb 1b \n\t" : "+r" (ptr) : "r" ((x86_reg) last_line - (x86_reg) ptr - w), "r" ((x86_reg) wrap), "r" ((x86_reg) wrap * 3), "r" (ptr + width + 2 * w)); } } } #endif /* HAVE_INLINE_ASM */