mirror of
https://github.com/FFmpeg/FFmpeg.git
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303 lines
11 KiB
C
303 lines
11 KiB
C
/*
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* Format Conversion 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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* 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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* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
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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/fmtconvert.h"
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static void int32_to_float_fmul_scalar_sse(float *dst, const int *src, float mul, int len)
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{
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x86_reg i = -4*len;
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__asm__ volatile(
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"movss %3, %%xmm4 \n"
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"shufps $0, %%xmm4, %%xmm4 \n"
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"1: \n"
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"cvtpi2ps (%2,%0), %%xmm0 \n"
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"cvtpi2ps 8(%2,%0), %%xmm1 \n"
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"cvtpi2ps 16(%2,%0), %%xmm2 \n"
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"cvtpi2ps 24(%2,%0), %%xmm3 \n"
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"movlhps %%xmm1, %%xmm0 \n"
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"movlhps %%xmm3, %%xmm2 \n"
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"mulps %%xmm4, %%xmm0 \n"
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"mulps %%xmm4, %%xmm2 \n"
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"movaps %%xmm0, (%1,%0) \n"
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"movaps %%xmm2, 16(%1,%0) \n"
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"add $32, %0 \n"
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"jl 1b \n"
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:"+r"(i)
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:"r"(dst+len), "r"(src+len), "m"(mul)
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);
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}
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static void int32_to_float_fmul_scalar_sse2(float *dst, const int *src, float mul, int len)
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{
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x86_reg i = -4*len;
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__asm__ volatile(
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"movss %3, %%xmm4 \n"
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"shufps $0, %%xmm4, %%xmm4 \n"
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"1: \n"
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"cvtdq2ps (%2,%0), %%xmm0 \n"
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"cvtdq2ps 16(%2,%0), %%xmm1 \n"
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"mulps %%xmm4, %%xmm0 \n"
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"mulps %%xmm4, %%xmm1 \n"
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"movaps %%xmm0, (%1,%0) \n"
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"movaps %%xmm1, 16(%1,%0) \n"
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"add $32, %0 \n"
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"jl 1b \n"
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:"+r"(i)
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:"r"(dst+len), "r"(src+len), "m"(mul)
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);
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}
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static void float_to_int16_3dnow(int16_t *dst, const float *src, long len){
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x86_reg reglen = len;
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// not bit-exact: pf2id uses different rounding than C and SSE
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__asm__ volatile(
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"add %0 , %0 \n\t"
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"lea (%2,%0,2) , %2 \n\t"
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"add %0 , %1 \n\t"
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"neg %0 \n\t"
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"1: \n\t"
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"pf2id (%2,%0,2) , %%mm0 \n\t"
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"pf2id 8(%2,%0,2) , %%mm1 \n\t"
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"pf2id 16(%2,%0,2) , %%mm2 \n\t"
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"pf2id 24(%2,%0,2) , %%mm3 \n\t"
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"packssdw %%mm1 , %%mm0 \n\t"
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"packssdw %%mm3 , %%mm2 \n\t"
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"movq %%mm0 , (%1,%0) \n\t"
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"movq %%mm2 , 8(%1,%0) \n\t"
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"add $16 , %0 \n\t"
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" js 1b \n\t"
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"femms \n\t"
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:"+r"(reglen), "+r"(dst), "+r"(src)
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);
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}
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static void float_to_int16_sse(int16_t *dst, const float *src, long len){
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x86_reg reglen = len;
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__asm__ volatile(
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"add %0 , %0 \n\t"
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"lea (%2,%0,2) , %2 \n\t"
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"add %0 , %1 \n\t"
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"neg %0 \n\t"
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"1: \n\t"
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"cvtps2pi (%2,%0,2) , %%mm0 \n\t"
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"cvtps2pi 8(%2,%0,2) , %%mm1 \n\t"
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"cvtps2pi 16(%2,%0,2) , %%mm2 \n\t"
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"cvtps2pi 24(%2,%0,2) , %%mm3 \n\t"
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"packssdw %%mm1 , %%mm0 \n\t"
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"packssdw %%mm3 , %%mm2 \n\t"
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"movq %%mm0 , (%1,%0) \n\t"
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"movq %%mm2 , 8(%1,%0) \n\t"
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"add $16 , %0 \n\t"
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" js 1b \n\t"
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"emms \n\t"
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:"+r"(reglen), "+r"(dst), "+r"(src)
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);
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}
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static void float_to_int16_sse2(int16_t *dst, const float *src, long len){
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x86_reg reglen = len;
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__asm__ volatile(
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"add %0 , %0 \n\t"
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"lea (%2,%0,2) , %2 \n\t"
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"add %0 , %1 \n\t"
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"neg %0 \n\t"
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"1: \n\t"
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"cvtps2dq (%2,%0,2) , %%xmm0 \n\t"
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"cvtps2dq 16(%2,%0,2) , %%xmm1 \n\t"
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"packssdw %%xmm1 , %%xmm0 \n\t"
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"movdqa %%xmm0 , (%1,%0) \n\t"
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"add $16 , %0 \n\t"
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" js 1b \n\t"
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:"+r"(reglen), "+r"(dst), "+r"(src)
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);
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}
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void ff_float_to_int16_interleave6_sse(int16_t *dst, const float **src, int len);
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void ff_float_to_int16_interleave6_3dnow(int16_t *dst, const float **src, int len);
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void ff_float_to_int16_interleave6_3dn2(int16_t *dst, const float **src, int len);
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#if !HAVE_YASM
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#define ff_float_to_int16_interleave6_sse(a,b,c) float_to_int16_interleave_misc_sse(a,b,c,6)
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#define ff_float_to_int16_interleave6_3dnow(a,b,c) float_to_int16_interleave_misc_3dnow(a,b,c,6)
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#define ff_float_to_int16_interleave6_3dn2(a,b,c) float_to_int16_interleave_misc_3dnow(a,b,c,6)
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#endif
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#define ff_float_to_int16_interleave6_sse2 ff_float_to_int16_interleave6_sse
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#define FLOAT_TO_INT16_INTERLEAVE(cpu, body) \
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/* gcc pessimizes register allocation if this is in the same function as float_to_int16_interleave_sse2*/\
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static av_noinline void float_to_int16_interleave_misc_##cpu(int16_t *dst, const float **src, long len, int channels){\
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DECLARE_ALIGNED(16, int16_t, tmp)[len];\
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int i,j,c;\
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for(c=0; c<channels; c++){\
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float_to_int16_##cpu(tmp, src[c], len);\
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for(i=0, j=c; i<len; i++, j+=channels)\
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dst[j] = tmp[i];\
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}\
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}\
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\
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static void float_to_int16_interleave_##cpu(int16_t *dst, const float **src, long len, int channels){\
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if(channels==1)\
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float_to_int16_##cpu(dst, src[0], len);\
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else if(channels==2){\
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x86_reg reglen = len; \
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const float *src0 = src[0];\
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const float *src1 = src[1];\
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__asm__ volatile(\
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"shl $2, %0 \n"\
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"add %0, %1 \n"\
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"add %0, %2 \n"\
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"add %0, %3 \n"\
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"neg %0 \n"\
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body\
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:"+r"(reglen), "+r"(dst), "+r"(src0), "+r"(src1)\
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);\
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}else if(channels==6){\
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ff_float_to_int16_interleave6_##cpu(dst, src, len);\
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}else\
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float_to_int16_interleave_misc_##cpu(dst, src, len, channels);\
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}
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FLOAT_TO_INT16_INTERLEAVE(3dnow,
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"1: \n"
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"pf2id (%2,%0), %%mm0 \n"
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"pf2id 8(%2,%0), %%mm1 \n"
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"pf2id (%3,%0), %%mm2 \n"
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"pf2id 8(%3,%0), %%mm3 \n"
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"packssdw %%mm1, %%mm0 \n"
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"packssdw %%mm3, %%mm2 \n"
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"movq %%mm0, %%mm1 \n"
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"punpcklwd %%mm2, %%mm0 \n"
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"punpckhwd %%mm2, %%mm1 \n"
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"movq %%mm0, (%1,%0)\n"
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"movq %%mm1, 8(%1,%0)\n"
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"add $16, %0 \n"
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"js 1b \n"
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"femms \n"
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)
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FLOAT_TO_INT16_INTERLEAVE(sse,
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"1: \n"
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"cvtps2pi (%2,%0), %%mm0 \n"
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"cvtps2pi 8(%2,%0), %%mm1 \n"
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"cvtps2pi (%3,%0), %%mm2 \n"
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"cvtps2pi 8(%3,%0), %%mm3 \n"
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"packssdw %%mm1, %%mm0 \n"
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"packssdw %%mm3, %%mm2 \n"
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"movq %%mm0, %%mm1 \n"
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"punpcklwd %%mm2, %%mm0 \n"
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"punpckhwd %%mm2, %%mm1 \n"
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"movq %%mm0, (%1,%0)\n"
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"movq %%mm1, 8(%1,%0)\n"
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"add $16, %0 \n"
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"js 1b \n"
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"emms \n"
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)
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FLOAT_TO_INT16_INTERLEAVE(sse2,
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"1: \n"
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"cvtps2dq (%2,%0), %%xmm0 \n"
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"cvtps2dq (%3,%0), %%xmm1 \n"
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"packssdw %%xmm1, %%xmm0 \n"
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"movhlps %%xmm0, %%xmm1 \n"
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"punpcklwd %%xmm1, %%xmm0 \n"
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"movdqa %%xmm0, (%1,%0) \n"
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"add $16, %0 \n"
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"js 1b \n"
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)
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static void float_to_int16_interleave_3dn2(int16_t *dst, const float **src, long len, int channels){
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if(channels==6)
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ff_float_to_int16_interleave6_3dn2(dst, src, len);
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else
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float_to_int16_interleave_3dnow(dst, src, len, channels);
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}
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#if HAVE_YASM
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void ff_float_interleave2_mmx(float *dst, const float **src, unsigned int len);
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void ff_float_interleave2_sse(float *dst, const float **src, unsigned int len);
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void ff_float_interleave6_mmx(float *dst, const float **src, unsigned int len);
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void ff_float_interleave6_sse(float *dst, const float **src, unsigned int len);
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static void float_interleave_mmx(float *dst, const float **src,
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unsigned int len, int channels)
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{
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if (channels == 2) {
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ff_float_interleave2_mmx(dst, src, len);
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} else if (channels == 6)
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ff_float_interleave6_mmx(dst, src, len);
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else
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ff_float_interleave_c(dst, src, len, channels);
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}
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static void float_interleave_sse(float *dst, const float **src,
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unsigned int len, int channels)
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{
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if (channels == 2) {
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ff_float_interleave2_sse(dst, src, len);
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} else if (channels == 6)
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ff_float_interleave6_sse(dst, src, len);
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else
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ff_float_interleave_c(dst, src, len, channels);
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}
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#endif
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void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
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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_MMX) {
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#if HAVE_YASM
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c->float_interleave = float_interleave_mmx;
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#endif
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if(mm_flags & AV_CPU_FLAG_3DNOW){
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if(!(avctx->flags & CODEC_FLAG_BITEXACT)){
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c->float_to_int16 = float_to_int16_3dnow;
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c->float_to_int16_interleave = float_to_int16_interleave_3dnow;
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}
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}
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if(mm_flags & AV_CPU_FLAG_3DNOWEXT){
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if(!(avctx->flags & CODEC_FLAG_BITEXACT)){
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c->float_to_int16_interleave = float_to_int16_interleave_3dn2;
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}
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}
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if(mm_flags & AV_CPU_FLAG_SSE){
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c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_sse;
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c->float_to_int16 = float_to_int16_sse;
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c->float_to_int16_interleave = float_to_int16_interleave_sse;
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#if HAVE_YASM
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c->float_interleave = float_interleave_sse;
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#endif
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}
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if(mm_flags & AV_CPU_FLAG_SSE2){
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c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_sse2;
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c->float_to_int16 = float_to_int16_sse2;
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c->float_to_int16_interleave = float_to_int16_interleave_sse2;
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}
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}
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}
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