mirror of https://github.com/FFmpeg/FFmpeg.git
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>pull/2/head
Baptiste Coudurier
14 years ago
committed by
Michael Niedermayer
parent
d6f910ea47
commit
6d4c49a2af
7 changed files with 218 additions and 164 deletions
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/*
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* MMX optimized PNG utils |
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* Copyright (c) 2008 Loren Merritt |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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*/ |
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#include "libavutil/cpu.h" |
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#include "libavutil/x86_cpu.h" |
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#include "libavcodec/dsputil.h" |
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#include "libavcodec/png.h" |
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#include "dsputil_mmx.h" |
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//#undef NDEBUG
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//#include <assert.h>
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static void add_bytes_l2_mmx(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w) |
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{ |
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x86_reg i=0; |
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__asm__ volatile( |
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"jmp 2f \n\t" |
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"1: \n\t" |
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"movq (%2, %0), %%mm0 \n\t" |
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"movq 8(%2, %0), %%mm1 \n\t" |
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"paddb (%3, %0), %%mm0 \n\t" |
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"paddb 8(%3, %0), %%mm1 \n\t" |
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"movq %%mm0, (%1, %0) \n\t" |
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"movq %%mm1, 8(%1, %0) \n\t" |
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"add $16, %0 \n\t" |
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"2: \n\t" |
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"cmp %4, %0 \n\t" |
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" js 1b \n\t" |
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: "+r" (i) |
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: "r"(dst), "r"(src1), "r"(src2), "r"((x86_reg)w-15) |
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); |
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for(; i<w; i++) |
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dst[i] = src1[i] + src2[i]; |
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} |
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#define PAETH(cpu, abs3)\ |
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static void add_paeth_prediction_##cpu(uint8_t *dst, uint8_t *src, uint8_t *top, int w, int bpp)\
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{\
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x86_reg i = -bpp;\
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x86_reg end = w-3;\
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__asm__ volatile(\
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"pxor %%mm7, %%mm7 \n"\
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"movd (%1,%0), %%mm0 \n"\
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"movd (%2,%0), %%mm1 \n"\
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"punpcklbw %%mm7, %%mm0 \n"\
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"punpcklbw %%mm7, %%mm1 \n"\
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"add %4, %0 \n"\
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"1: \n"\
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"movq %%mm1, %%mm2 \n"\
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"movd (%2,%0), %%mm1 \n"\
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"movq %%mm2, %%mm3 \n"\
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"punpcklbw %%mm7, %%mm1 \n"\
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"movq %%mm2, %%mm4 \n"\
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"psubw %%mm1, %%mm3 \n"\
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"psubw %%mm0, %%mm4 \n"\
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"movq %%mm3, %%mm5 \n"\
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"paddw %%mm4, %%mm5 \n"\
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abs3\
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"movq %%mm4, %%mm6 \n"\
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"pminsw %%mm5, %%mm6 \n"\
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"pcmpgtw %%mm6, %%mm3 \n"\
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"pcmpgtw %%mm5, %%mm4 \n"\
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"movq %%mm4, %%mm6 \n"\
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"pand %%mm3, %%mm4 \n"\
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"pandn %%mm3, %%mm6 \n"\
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"pandn %%mm0, %%mm3 \n"\
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"movd (%3,%0), %%mm0 \n"\
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"pand %%mm1, %%mm6 \n"\
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"pand %%mm4, %%mm2 \n"\
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"punpcklbw %%mm7, %%mm0 \n"\
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"movq %6, %%mm5 \n"\
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"paddw %%mm6, %%mm0 \n"\
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"paddw %%mm2, %%mm3 \n"\
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"paddw %%mm3, %%mm0 \n"\
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"pand %%mm5, %%mm0 \n"\
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"movq %%mm0, %%mm3 \n"\
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"packuswb %%mm3, %%mm3 \n"\
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"movd %%mm3, (%1,%0) \n"\
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"add %4, %0 \n"\
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"cmp %5, %0 \n"\
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"jle 1b \n"\
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:"+r"(i)\
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:"r"(dst), "r"(top), "r"(src), "r"((x86_reg)bpp), "g"(end),\
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"m"(ff_pw_255)\
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:"memory"\
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);\
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} |
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#define ABS3_MMX2\ |
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"psubw %%mm5, %%mm7 \n"\
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"pmaxsw %%mm7, %%mm5 \n"\
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"pxor %%mm6, %%mm6 \n"\
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"pxor %%mm7, %%mm7 \n"\
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"psubw %%mm3, %%mm6 \n"\
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"psubw %%mm4, %%mm7 \n"\
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"pmaxsw %%mm6, %%mm3 \n"\
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"pmaxsw %%mm7, %%mm4 \n"\
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"pxor %%mm7, %%mm7 \n" |
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#define ABS3_SSSE3\ |
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"pabsw %%mm3, %%mm3 \n"\
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"pabsw %%mm4, %%mm4 \n"\
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"pabsw %%mm5, %%mm5 \n" |
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PAETH(mmx2, ABS3_MMX2) |
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#if HAVE_SSSE3 |
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PAETH(ssse3, ABS3_SSSE3) |
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#endif |
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void ff_png_init_mmx(PNGDecContext *s) |
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{ |
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int mm_flags = av_get_cpu_flags(); |
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if (mm_flags & AV_CPU_FLAG_MMX2) { |
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s->add_bytes_l2 = add_bytes_l2_mmx; |
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s->add_paeth_prediction = add_paeth_prediction_mmx2; |
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#if HAVE_SSSE3 |
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if (mm_flags & AV_CPU_FLAG_SSSE3) |
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s->add_paeth_prediction = add_paeth_prediction_ssse3; |
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#endif |
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} |
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} |
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