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- ;******************************************************************************
- ;* x86 optimized channel mixing
- ;* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
- ;*
- ;* This file is part of Libav.
- ;*
- ;* Libav is free software; you can redistribute it and/or
- ;* modify it under the terms of the GNU Lesser General Public
- ;* License as published by the Free Software Foundation; either
- ;* version 2.1 of the License, or (at your option) any later version.
- ;*
- ;* Libav is distributed in the hope that it will be useful,
- ;* but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- ;* Lesser General Public License for more details.
- ;*
- ;* You should have received a copy of the GNU Lesser General Public
- ;* License along with Libav; if not, write to the Free Software
- ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- ;******************************************************************************
-
- %include "x86inc.asm"
- %include "x86util.asm"
-
- SECTION_TEXT
-
- ;-----------------------------------------------------------------------------
- ; void ff_mix_2_to_1_fltp_flt(float **src, float **matrix, int len,
- ; int out_ch, int in_ch);
- ;-----------------------------------------------------------------------------
-
- %macro MIX_2_TO_1_FLTP_FLT 0
- cglobal mix_2_to_1_fltp_flt, 3,4,6, src, matrix, len, src1
- mov src1q, [srcq+gprsize]
- mov srcq, [srcq ]
- sub src1q, srcq
- mov matrixq, [matrixq ]
- VBROADCASTSS m4, [matrixq ]
- VBROADCASTSS m5, [matrixq+4]
- ALIGN 16
- .loop:
- mulps m0, m4, [srcq ]
- mulps m1, m5, [srcq+src1q ]
- mulps m2, m4, [srcq+ mmsize]
- mulps m3, m5, [srcq+src1q+mmsize]
- addps m0, m0, m1
- addps m2, m2, m3
- mova [srcq ], m0
- mova [srcq+mmsize], m2
- add srcq, mmsize*2
- sub lend, mmsize*2/4
- jg .loop
- %if mmsize == 32
- vzeroupper
- RET
- %else
- REP_RET
- %endif
- %endmacro
-
- INIT_XMM sse
- MIX_2_TO_1_FLTP_FLT
- %if HAVE_AVX
- INIT_YMM avx
- MIX_2_TO_1_FLTP_FLT
- %endif
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