mirror of https://git.ffmpeg.org/ffmpeg.git
145 lines
3.4 KiB
NASM
145 lines
3.4 KiB
NASM
;******************************************************************************
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;* Copyright (c) 2012 Michael Niedermayer
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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/x86inc.asm"
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%include "libavutil/x86/x86util.asm"
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SECTION_RODATA
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flt2pm31: times 8 dd 4.6566129e-10
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SECTION .text
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%macro INT16_TO_INT32 1
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cglobal int16_to_int32_%1, 3, 3, 3, dst, src, len
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mov srcq, [srcq]
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mov dstq, [dstq]
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%ifidn %1, a
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test dstq, mmsize-1
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jne int16_to_int32_u_int %+ SUFFIX
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test srcq, mmsize-1
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jne int16_to_int32_u_int %+ SUFFIX
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%else
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int16_to_int32_u_int %+ SUFFIX
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%endif
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add dstq, lenq
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shr lenq, 1
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add srcq, lenq
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neg lenq
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.next
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mov%1 m2, [srcq+lenq]
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pxor m0, m0
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pxor m1, m1
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punpcklwd m0, m2
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punpckhwd m1, m2
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mov%1 [ dstq+2*lenq], m0
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mov%1 [mmsize + dstq+2*lenq], m1
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add lenq, mmsize
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jl .next
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%if mmsize == 8
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emms
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%endif
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REP_RET
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%endmacro
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%macro INT32_TO_FLOAT 1
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cglobal int32_to_float_%1, 3, 3, 3, dst, src, len
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mov srcq, [srcq]
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mov dstq, [dstq]
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%ifidn %1, a
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test dstq, mmsize-1
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jne int32_to_float_u_int %+ SUFFIX
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test srcq, mmsize-1
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jne int32_to_float_u_int %+ SUFFIX
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%else
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int32_to_float_u_int %+ SUFFIX
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%endif
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add srcq, lenq
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add dstq, lenq
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neg lenq
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mova m2, [flt2pm31]
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.next:
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%ifidn %1, a
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cvtdq2ps m0, [ srcq+lenq]
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cvtdq2ps m1, [mmsize + srcq+lenq]
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%else
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movu m0, [ srcq+lenq]
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movu m1, [mmsize + srcq+lenq]
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cvtdq2ps m0, m0
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cvtdq2ps m1, m1
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%endif
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mulps m0, m2
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mulps m1, m2
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mov%1 [ dstq+lenq], m0
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mov%1 [mmsize + dstq+lenq], m1
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add lenq, 2*mmsize
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jl .next
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REP_RET
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%endmacro
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%macro INT16_TO_FLOAT 1
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cglobal int16_to_float_%1, 3, 3, 4, dst, src, len
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mov srcq, [srcq]
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mov dstq, [dstq]
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%ifidn %1, a
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test dstq, mmsize-1
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jne int16_to_float_u_int %+ SUFFIX
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test srcq, mmsize-1
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jne int16_to_float_u_int %+ SUFFIX
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%else
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int16_to_float_u_int %+ SUFFIX
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%endif
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add dstq, lenq
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shr lenq, 1
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add srcq, lenq
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neg lenq
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mova m3, [flt2pm31]
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.next:
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mov%1 m2, [srcq+lenq]
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pxor m0, m0
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pxor m1, m1
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punpcklwd m0, m2
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punpckhwd m1, m2
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cvtdq2ps m0, m0
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cvtdq2ps m1, m1
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mulps m0, m3
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mulps m1, m3
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mov%1 [ dstq+2*lenq], m0
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mov%1 [mmsize + dstq+2*lenq], m1
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add lenq, mmsize
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jl .next
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REP_RET
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%endmacro
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INIT_MMX mmx
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INT16_TO_INT32 u
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INT16_TO_INT32 a
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INIT_XMM sse
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INT16_TO_INT32 u
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INT16_TO_INT32 a
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INIT_XMM sse2
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INT32_TO_FLOAT u
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INT32_TO_FLOAT a
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INT16_TO_FLOAT u
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INT16_TO_FLOAT a
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