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https://github.com/FFmpeg/FFmpeg.git
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123 lines
3.9 KiB
NASM
123 lines
3.9 KiB
NASM
;******************************************************************************
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;* X86 Optimized functions for Open Exr Decoder
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;* Copyright (c) 2006 Industrial Light & Magic, a division of Lucas Digital Ltd. LLC
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;*
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;* reorder_pixels, predictor based on patch by John Loy
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;* port to ASM by Jokyo Images support by CNC - French National Center for Cinema
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;*
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;* predictor AVX/AVX2 by Henrik Gramner
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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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cextern pb_15
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cextern pb_80
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SECTION .text
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;------------------------------------------------------------------------------
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; void ff_reorder_pixels(uint8_t *dst, const uint8_t *src, ptrdiff_t size);
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;------------------------------------------------------------------------------
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%macro REORDER_PIXELS 0
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cglobal reorder_pixels, 3,4,3, dst, src1, size, src2
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lea src2q, [src1q+sizeq] ; src2 = src + 2 * half_size
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add dstq, sizeq ; dst offset by size
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shr sizeq, 1 ; half_size
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add src1q, sizeq ; offset src by half_size
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neg sizeq ; size = offset for dst, src1, src2
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.loop:
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mova m0, [src1q+sizeq] ; load first part
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movu m1, [src2q+sizeq] ; load second part
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SBUTTERFLY bw, 0, 1, 2 ; interleaved
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mova [dstq+2*sizeq ], xm0 ; copy to dst
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mova [dstq+2*sizeq+16], xm1
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%if cpuflag(avx2)
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vperm2i128 m0, m0, m1, q0301
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mova [dstq+2*sizeq+32], m0
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%endif
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add sizeq, mmsize
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jl .loop
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RET
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%endmacro
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INIT_XMM sse2
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REORDER_PIXELS
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%if HAVE_AVX2_EXTERNAL
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INIT_YMM avx2
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REORDER_PIXELS
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%endif
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;------------------------------------------------------------------------------
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; void ff_predictor(uint8_t *src, ptrdiff_t size);
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;------------------------------------------------------------------------------
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%macro PREDICTOR 0
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cglobal predictor, 2,2,5, src, size
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%if mmsize == 32
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vbroadcasti128 m0, [pb_80]
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%else
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mova xm0, [pb_80]
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%endif
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mova xm1, [pb_15]
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mova xm2, xm0
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add srcq, sizeq
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neg sizeq
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.loop:
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pxor m3, m0, [srcq + sizeq]
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pslldq m4, m3, 1
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paddb m3, m4
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pslldq m4, m3, 2
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paddb m3, m4
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pslldq m4, m3, 4
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paddb m3, m4
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pslldq m4, m3, 8
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%if mmsize == 32
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paddb m3, m4
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paddb xm2, xm3
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vextracti128 xm4, m3, 1
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mova [srcq + sizeq], xm2
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pshufb xm2, xm1
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paddb xm2, xm4
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mova [srcq + sizeq + 16], xm2
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%else
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paddb m2, m3
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paddb m2, m4
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mova [srcq + sizeq], m2
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%endif
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pshufb xm2, xm1
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add sizeq, mmsize
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jl .loop
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RET
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%endmacro
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INIT_XMM ssse3
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PREDICTOR
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INIT_XMM avx
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PREDICTOR
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%if HAVE_AVX2_EXTERNAL
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INIT_YMM avx2
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PREDICTOR
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%endif
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