mirror of
https://github.com/FFmpeg/FFmpeg.git
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c8af852b97
This is a new library for audio sample format, channel layout, and sample rate conversion.
105 lines
2.9 KiB
NASM
105 lines
2.9 KiB
NASM
;******************************************************************************
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;* x86 optimized Format Conversion Utils
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;* Copyright (c) 2008 Loren Merritt
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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_conv_fltp_to_flt_6ch(float *dst, float *const *src, int len,
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; int channels);
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;-----------------------------------------------------------------------------
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%macro CONV_FLTP_TO_FLT_6CH 0
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cglobal conv_fltp_to_flt_6ch, 2,8,7, dst, src, src1, src2, src3, src4, src5, len
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%if ARCH_X86_64
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mov lend, r2d
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%else
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%define lend dword r2m
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%endif
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mov src1q, [srcq+1*gprsize]
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mov src2q, [srcq+2*gprsize]
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mov src3q, [srcq+3*gprsize]
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mov src4q, [srcq+4*gprsize]
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mov src5q, [srcq+5*gprsize]
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mov srcq, [srcq]
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sub src1q, srcq
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sub src2q, srcq
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sub src3q, srcq
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sub src4q, srcq
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sub src5q, srcq
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.loop:
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mova m0, [srcq ]
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mova m1, [srcq+src1q]
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mova m2, [srcq+src2q]
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mova m3, [srcq+src3q]
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mova m4, [srcq+src4q]
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mova m5, [srcq+src5q]
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%if cpuflag(sse)
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SBUTTERFLYPS 0, 1, 6
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SBUTTERFLYPS 2, 3, 6
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SBUTTERFLYPS 4, 5, 6
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movaps m6, m4
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shufps m4, m0, q3210
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movlhps m0, m2
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movhlps m6, m2
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movaps [dstq ], m0
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movaps [dstq+16], m4
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movaps [dstq+32], m6
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movaps m6, m5
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shufps m5, m1, q3210
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movlhps m1, m3
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movhlps m6, m3
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movaps [dstq+48], m1
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movaps [dstq+64], m5
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movaps [dstq+80], m6
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%else ; mmx
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SBUTTERFLY dq, 0, 1, 6
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SBUTTERFLY dq, 2, 3, 6
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SBUTTERFLY dq, 4, 5, 6
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movq [dstq ], m0
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movq [dstq+ 8], m2
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movq [dstq+16], m4
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movq [dstq+24], m1
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movq [dstq+32], m3
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movq [dstq+40], m5
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%endif
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add srcq, mmsize
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add dstq, mmsize*6
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sub lend, mmsize/4
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jg .loop
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%if mmsize == 8
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emms
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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_MMX mmx
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CONV_FLTP_TO_FLT_6CH
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INIT_XMM sse
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CONV_FLTP_TO_FLT_6CH
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