mirror of https://github.com/FFmpeg/FFmpeg.git
Diego Biurrun
11 years ago
parent
c166148409
commit
3c650efb81
12 changed files with 155 additions and 195 deletions
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/*
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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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/* 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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#endif /* HAVE_INLINE_ASM */ |
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