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https://github.com/librempeg/librempeg
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swr: MMX2 & SSSE3 int16 resample core
about 4 times faster Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
parent
7803a04041
commit
4ccf6e3971
@ -356,15 +356,71 @@ int swr_set_compensation(struct SwrContext *s, int sample_delta, int compensatio
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#define OUT(d, v) d = v
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#include "resample_template.c"
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#undef RENAME
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#undef FELEM
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#undef FELEM2
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#undef DELEM
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#undef FELEML
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#undef OUT
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#undef FELEM_MIN
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#undef FELEM_MAX
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#undef FILTER_SHIFT
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// XXX FIXME the whole C loop should be written in asm so this x86 specific code here isnt needed
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#if ARCH_X86
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#include "x86/resample_mmx.h"
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#define COMMON_CORE COMMON_CORE_INT16_MMX2
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#define RENAME(N) N ## _int16_mmx2
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#define FILTER_SHIFT 15
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#define DELEM int16_t
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#define FELEM int16_t
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#define FELEM2 int32_t
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#define FELEML int64_t
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#define FELEM_MAX INT16_MAX
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#define FELEM_MIN INT16_MIN
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#define OUT(d, v) v = (v + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\
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d = (unsigned)(v + 32768) > 65535 ? (v>>31) ^ 32767 : v
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#include "resample_template.c"
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#undef COMMON_CORE
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#undef RENAME
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#undef FELEM
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#undef FELEM2
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#undef DELEM
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#undef FELEML
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#undef OUT
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#undef FELEM_MIN
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#undef FELEM_MAX
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#undef FILTER_SHIFT
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#define COMMON_CORE COMMON_CORE_INT16_SSSE3
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#define RENAME(N) N ## _int16_ssse3
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#define FILTER_SHIFT 15
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#define DELEM int16_t
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#define FELEM int16_t
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#define FELEM2 int32_t
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#define FELEML int64_t
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#define FELEM_MAX INT16_MAX
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#define FELEM_MIN INT16_MIN
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#define OUT(d, v) v = (v + (1<<(FILTER_SHIFT-1)))>>FILTER_SHIFT;\
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d = (unsigned)(v + 32768) > 65535 ? (v>>31) ^ 32767 : v
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#include "resample_template.c"
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#endif // ARCH_X86
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int swri_multiple_resample(ResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed){
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int i, ret= -1;
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int mm_flags = av_get_cpu_flags();
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for(i=0; i<dst->ch_count; i++){
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if(c->format == AV_SAMPLE_FMT_S16P) ret= swri_resample_int16(c, (int16_t*)dst->ch[i], (const int16_t*)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count);
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if(c->format == AV_SAMPLE_FMT_S32P) ret= swri_resample_int32(c, (int32_t*)dst->ch[i], (const int32_t*)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count);
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if(c->format == AV_SAMPLE_FMT_FLTP) ret= swri_resample_float(c, (float *)dst->ch[i], (const float *)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count);
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if(c->format == AV_SAMPLE_FMT_DBLP) ret= swri_resample_double(c,(double *)dst->ch[i], (const double *)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count);
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#if ARCH_X86
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if(c->format == AV_SAMPLE_FMT_S16P && (mm_flags&AV_CPU_FLAG_SSSE3)) ret= swri_resample_int16_ssse3(c, (int16_t*)dst->ch[i], (const int16_t*)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count);
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else if(c->format == AV_SAMPLE_FMT_S16P && (mm_flags&AV_CPU_FLAG_MMX2 )) ret= swri_resample_int16_mmx2 (c, (int16_t*)dst->ch[i], (const int16_t*)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count);
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else
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#endif
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if(c->format == AV_SAMPLE_FMT_S16P) ret= swri_resample_int16(c, (int16_t*)dst->ch[i], (const int16_t*)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count);
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else if(c->format == AV_SAMPLE_FMT_S32P) ret= swri_resample_int32(c, (int32_t*)dst->ch[i], (const int32_t*)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count);
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else if(c->format == AV_SAMPLE_FMT_FLTP) ret= swri_resample_float(c, (float *)dst->ch[i], (const float *)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count);
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else if(c->format == AV_SAMPLE_FMT_DBLP) ret= swri_resample_double(c,(double *)dst->ch[i], (const double *)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count);
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}
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return ret;
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@ -56,11 +56,15 @@ int RENAME(swri_resample)(ResampleContext *c, DELEM *dst, const DELEM *src, int
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if(sample_index + c->filter_length > src_size){
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break;
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}else{
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#ifdef COMMON_CORE
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COMMON_CORE
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#else
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FELEM2 val=0;
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for(i=0; i<c->filter_length; i++){
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val += src[sample_index + i] * (FELEM2)filter[i];
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}
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OUT(dst[dst_index], val);
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#endif
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}
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frac += dst_incr_frac;
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69
libswresample/x86/resample_mmx.h
Normal file
69
libswresample/x86/resample_mmx.h
Normal file
@ -0,0 +1,69 @@
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/*
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* Copyright (c) 2012 Michael Niedermayer <michaelni@gmx.at>
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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/x86_cpu.h"
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#include "libavutil/cpu.h"
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int swri_resample_int16_mmx2 (struct ResampleContext *c, int16_t *dst, const int16_t *src, int *consumed, int src_size, int dst_size, int update_ctx);
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int swri_resample_int16_ssse3(struct ResampleContext *c, int16_t *dst, const int16_t *src, int *consumed, int src_size, int dst_size, int update_ctx);
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DECLARE_ALIGNED(16, const uint64_t, ff_resample_int16_rounder)[2] = { 0x0000000000004000ULL, 0x0000000000000000ULL};
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#define COMMON_CORE_INT16_MMX2 \
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x86_reg len= -2*c->filter_length;\
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__asm volatile(\
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"movq "MANGLE(ff_resample_int16_rounder)", %%mm0 \n\t"\
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"1: \n\t"\
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"movq (%1, %0), %%mm1 \n\t"\
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"pmaddwd (%2, %0), %%mm1 \n\t"\
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"paddd %%mm1, %%mm0 \n\t"\
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"add $8, %0 \n\t"\
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" js 1b \n\t"\
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"pshufw $0x0E, %%mm0, %%mm1 \n\t"\
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"paddd %%mm1, %%mm0 \n\t"\
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"psrad $15, %%mm0 \n\t"\
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"packssdw %%mm0, %%mm0 \n\t"\
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"movd %%mm0, (%3) \n\t"\
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: "+r" (len)\
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: "r" (((uint8_t*)(src+sample_index))-len),\
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"r" (((uint8_t*)filter)-len),\
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"r" (dst+dst_index)\
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);
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#define COMMON_CORE_INT16_SSSE3 \
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x86_reg len= -2*c->filter_length;\
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__asm volatile(\
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"movdqa "MANGLE(ff_resample_int16_rounder)", %%xmm0 \n\t"\
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"1: \n\t"\
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"movdqu (%1, %0), %%xmm1 \n\t"\
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"pmaddwd (%2, %0), %%xmm1 \n\t"\
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"paddd %%xmm1, %%xmm0 \n\t"\
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"add $16, %0 \n\t"\
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" js 1b \n\t"\
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"phaddd %%xmm0, %%xmm0 \n\t"\
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"phaddd %%xmm0, %%xmm0 \n\t"\
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"psrad $15, %%xmm0 \n\t"\
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"packssdw %%xmm0, %%xmm0 \n\t"\
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"movd %%xmm0, (%3) \n\t"\
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: "+r" (len)\
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: "r" (((uint8_t*)(src+sample_index))-len),\
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"r" (((uint8_t*)filter)-len),\
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"r" (dst+dst_index)\
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);
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