mirror of
https://github.com/FFmpeg/FFmpeg.git
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91 lines
2.4 KiB
NASM
91 lines
2.4 KiB
NASM
;******************************************************************************
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;* V210 SIMD unpack
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;* Copyright (c) 2011 Loren Merritt <lorenm@u.washington.edu>
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;* Copyright (c) 2011 Kieran Kunhya <kieran@kunhya.com>
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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/x86util.asm"
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SECTION_RODATA
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v210_mask: times 4 dd 0x3ff
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v210_mult: dw 64,4,64,4,64,4,64,4
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v210_luma_shuf: db 8,9,0,1,2,3,12,13,4,5,6,7,-1,-1,-1,-1
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v210_chroma_shuf: db 0,1,8,9,6,7,-1,-1,2,3,4,5,12,13,-1,-1
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SECTION .text
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%macro v210_planar_unpack 1
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; v210_planar_unpack(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
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cglobal v210_planar_unpack_%1, 5, 5, 7
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movsxdifnidn r4, r4d
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lea r1, [r1+2*r4]
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add r2, r4
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add r3, r4
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neg r4
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mova m3, [v210_mult]
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mova m4, [v210_mask]
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mova m5, [v210_luma_shuf]
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mova m6, [v210_chroma_shuf]
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.loop:
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%ifidn %1, unaligned
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movu m0, [r0]
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%else
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mova m0, [r0]
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%endif
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pmullw m1, m0, m3
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psrld m0, 10
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psrlw m1, 6 ; u0 v0 y1 y2 v1 u2 y4 y5
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pand m0, m4 ; y0 __ u1 __ y3 __ v2 __
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shufps m2, m1, m0, 0x8d ; y1 y2 y4 y5 y0 __ y3 __
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pshufb m2, m5 ; y0 y1 y2 y3 y4 y5 __ __
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movu [r1+2*r4], m2
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shufps m1, m0, 0xd8 ; u0 v0 v1 u2 u1 __ v2 __
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pshufb m1, m6 ; u0 u1 u2 __ v0 v1 v2 __
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movq [r2+r4], m1
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movhps [r3+r4], m1
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add r0, mmsize
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add r4, 6
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jl .loop
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REP_RET
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%endmacro
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INIT_XMM ssse3
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v210_planar_unpack unaligned
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%if HAVE_AVX_EXTERNAL
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INIT_XMM avx
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v210_planar_unpack unaligned
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%endif
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INIT_XMM ssse3
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v210_planar_unpack aligned
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%if HAVE_AVX_EXTERNAL
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INIT_XMM avx
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v210_planar_unpack aligned
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%endif
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