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lavr: Add x86-optimized function for s16 to s32 conversion

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This commit is contained in:
Justin Ruggles 2012-04-20 15:48:08 -04:00
parent 579fd87b46
commit 1168e29df1
2 changed files with 29 additions and 0 deletions
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23
libavresample/x86/audio_convert.asm
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@ -1,6 +1,7 @@
;******************************************************************************
;* x86 optimized Format Conversion Utils
;* Copyright (c) 2008 Loren Merritt
;* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
;*
;* This file is part of Libav.
;*
@ -24,6 +25,28 @@
SECTION_TEXT
;------------------------------------------------------------------------------
; void ff_conv_s16_to_s32(int32_t *dst, const int16_t *src, int len);
;------------------------------------------------------------------------------
INIT_XMM sse2
cglobal conv_s16_to_s32, 3,3,3, dst, src, len
lea lenq, [2*lend]
lea dstq, [dstq+2*lenq]
add srcq, lenq
neg lenq
.loop:
mova m2, [srcq+lenq]
pxor m0, m0
pxor m1, m1
punpcklwd m0, m2
punpckhwd m1, m2
mova [dstq+2*lenq ], m0
mova [dstq+2*lenq+mmsize], m1
add lenq, mmsize
jl .loop
REP_RET
;-----------------------------------------------------------------------------
; void ff_conv_fltp_to_flt_6ch(float *dst, float *const *src, int len,
; int channels);

6
libavresample/x86/audio_convert_init.c
View File

@ -22,6 +22,8 @@
#include "libavutil/cpu.h"
#include "libavresample/audio_convert.h"
extern void ff_conv_s16_to_s32_sse2(int16_t *dst, const int32_t *src, int len);
extern void ff_conv_fltp_to_flt_6ch_mmx (float *dst, float *const *src, int len);
extern void ff_conv_fltp_to_flt_6ch_sse4(float *dst, float *const *src, int len);
extern void ff_conv_fltp_to_flt_6ch_avx (float *dst, float *const *src, int len);
@ -43,5 +45,9 @@ av_cold void ff_audio_convert_init_x86(AudioConvert *ac)
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLTP,
6, 16, 4, "AVX", ff_conv_fltp_to_flt_6ch_avx);
}
if (mm_flags & AV_CPU_FLAG_SSE2 && HAVE_SSE) {
ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16,
0, 16, 8, "SSE2", ff_conv_s16_to_s32_sse2);
}
#endif
}