c8af852b97
This is a new library for audio sample format, channel layout, and sample rate conversion.
65 lines
2.1 KiB
NASM
65 lines
2.1 KiB
NASM
;******************************************************************************
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;* x86 optimized channel mixing
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;* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
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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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%include "x86inc.asm"
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%include "x86util.asm"
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SECTION_TEXT
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;-----------------------------------------------------------------------------
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; void ff_mix_2_to_1_fltp_flt(float **src, float **matrix, int len,
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; int out_ch, int in_ch);
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;-----------------------------------------------------------------------------
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%macro MIX_2_TO_1_FLTP_FLT 0
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cglobal mix_2_to_1_fltp_flt, 3,4,6, src, matrix, len, src1
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mov src1q, [srcq+gprsize]
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mov srcq, [srcq ]
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sub src1q, srcq
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mov matrixq, [matrixq ]
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VBROADCASTSS m4, [matrixq ]
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VBROADCASTSS m5, [matrixq+4]
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ALIGN 16
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.loop:
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mulps m0, m4, [srcq ]
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mulps m1, m5, [srcq+src1q ]
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mulps m2, m4, [srcq+ mmsize]
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mulps m3, m5, [srcq+src1q+mmsize]
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addps m0, m0, m1
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addps m2, m2, m3
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mova [srcq ], m0
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mova [srcq+mmsize], m2
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add srcq, mmsize*2
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sub lend, mmsize*2/4
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jg .loop
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%if mmsize == 32
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vzeroupper
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RET
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%else
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REP_RET
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%endif
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%endmacro
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INIT_XMM sse
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MIX_2_TO_1_FLTP_FLT
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INIT_YMM avx
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MIX_2_TO_1_FLTP_FLT
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