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c5dd2fdc09
x64 always has MMX, MMXEXT, SSE and SSE2 and this means that some functions for MMX, MMXEXT and 3dnow are always overridden by other functions (unless one e.g. explicitly disables SSE2) for x64. So given that the only systems that benefit from line_noise_mmx are truely ancient 32bit x86s it is removed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
116 lines
4.3 KiB
C
116 lines
4.3 KiB
C
/*
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* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
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* Copyright (c) 2013 Paul B Mahol
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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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#include "libavutil/attributes.h"
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#include "libavutil/x86/cpu.h"
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#include "libavutil/x86/asm.h"
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#include "libavfilter/vf_noise.h"
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#if HAVE_INLINE_ASM
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#if HAVE_6REGS
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static void line_noise_avg_mmx(uint8_t *dst, const uint8_t *src,
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int len, const int8_t * const *shift)
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{
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x86_reg mmx_len = len & (~7);
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__asm__ volatile(
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"mov %5, %%"FF_REG_a" \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movq (%1, %%"FF_REG_a"), %%mm1 \n\t"
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"movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
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"paddb (%2, %%"FF_REG_a"), %%mm1\n\t"
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"paddb (%3, %%"FF_REG_a"), %%mm1\n\t"
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"movq %%mm0, %%mm2 \n\t"
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"movq %%mm1, %%mm3 \n\t"
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"punpcklbw %%mm0, %%mm0 \n\t"
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"punpckhbw %%mm2, %%mm2 \n\t"
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"punpcklbw %%mm1, %%mm1 \n\t"
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"punpckhbw %%mm3, %%mm3 \n\t"
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"pmulhw %%mm0, %%mm1 \n\t"
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"pmulhw %%mm2, %%mm3 \n\t"
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"paddw %%mm1, %%mm1 \n\t"
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"paddw %%mm3, %%mm3 \n\t"
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"paddw %%mm0, %%mm1 \n\t"
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"paddw %%mm2, %%mm3 \n\t"
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"psrlw $8, %%mm1 \n\t"
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"psrlw $8, %%mm3 \n\t"
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"packuswb %%mm3, %%mm1 \n\t"
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"movq %%mm1, (%4, %%"FF_REG_a") \n\t"
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"add $8, %%"FF_REG_a" \n\t"
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" js 1b \n\t"
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:: "r" (src+mmx_len), "r" (shift[0]+mmx_len), "r" (shift[1]+mmx_len), "r" (shift[2]+mmx_len),
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"r" (dst+mmx_len), "g" (-mmx_len)
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: "%"FF_REG_a
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);
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if (mmx_len != len){
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const int8_t *shift2[3] = { shift[0]+mmx_len, shift[1]+mmx_len, shift[2]+mmx_len };
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ff_line_noise_avg_c(dst+mmx_len, src+mmx_len, len-mmx_len, shift2);
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}
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}
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#endif /* HAVE_6REGS */
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static void line_noise_mmxext(uint8_t *dst, const uint8_t *src,
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const int8_t *noise, int len, int shift)
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{
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x86_reg mmx_len = len & (~7);
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noise += shift;
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__asm__ volatile(
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"mov %3, %%"FF_REG_a" \n\t"
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"pcmpeqb %%mm7, %%mm7 \n\t"
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"psllw $15, %%mm7 \n\t"
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"packsswb %%mm7, %%mm7 \n\t"
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".p2align 4 \n\t"
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"1: \n\t"
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"movq (%0, %%"FF_REG_a"), %%mm0 \n\t"
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"movq (%1, %%"FF_REG_a"), %%mm1 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"paddsb %%mm1, %%mm0 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"movntq %%mm0, (%2, %%"FF_REG_a") \n\t"
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"add $8, %%"FF_REG_a" \n\t"
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" js 1b \n\t"
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:: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len)
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: "%"FF_REG_a
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);
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if (mmx_len != len)
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ff_line_noise_c(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0);
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}
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#endif /* HAVE_INLINE_ASM */
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av_cold void ff_noise_init_x86(NoiseContext *n)
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{
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#if HAVE_INLINE_ASM
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int cpu_flags = av_get_cpu_flags();
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if (INLINE_MMX(cpu_flags)) {
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#if HAVE_6REGS
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n->line_noise_avg = line_noise_avg_mmx;
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#endif
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}
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if (INLINE_MMXEXT(cpu_flags)) {
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n->line_noise = line_noise_mmxext;
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}
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#endif
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}
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