mirror of https://git.ffmpeg.org/ffmpeg.git
166 lines
4.1 KiB
NASM
166 lines
4.1 KiB
NASM
;******************************************************************************
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;* SIMD-optimized HuffYUV functions
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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 "libavutil/x86/x86util.asm"
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SECTION_RODATA
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pb_f: times 16 db 15
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pb_zzzzzzzz77777777: times 8 db -1
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pb_7: times 8 db 7
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pb_zzzz3333zzzzbbbb: db -1,-1,-1,-1,3,3,3,3,-1,-1,-1,-1,11,11,11,11
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pb_zz11zz55zz99zzdd: db -1,-1,1,1,-1,-1,5,5,-1,-1,9,9,-1,-1,13,13
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SECTION .text
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; void ff_add_hfyu_median_pred_mmxext(uint8_t *dst, const uint8_t *top,
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; const uint8_t *diff, int w,
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; int *left, int *left_top)
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INIT_MMX mmxext
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cglobal add_hfyu_median_pred, 6,6,0, dst, top, diff, w, left, left_top
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movq mm0, [topq]
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movq mm2, mm0
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movd mm4, [left_topq]
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psllq mm2, 8
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movq mm1, mm0
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por mm4, mm2
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movd mm3, [leftq]
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psubb mm0, mm4 ; t-tl
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add dstq, wq
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add topq, wq
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add diffq, wq
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neg wq
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jmp .skip
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.loop:
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movq mm4, [topq+wq]
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movq mm0, mm4
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psllq mm4, 8
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por mm4, mm1
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movq mm1, mm0 ; t
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psubb mm0, mm4 ; t-tl
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.skip:
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movq mm2, [diffq+wq]
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%assign i 0
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%rep 8
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movq mm4, mm0
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paddb mm4, mm3 ; t-tl+l
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movq mm5, mm3
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pmaxub mm3, mm1
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pminub mm5, mm1
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pminub mm3, mm4
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pmaxub mm3, mm5 ; median
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paddb mm3, mm2 ; +residual
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%if i==0
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movq mm7, mm3
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psllq mm7, 56
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%else
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movq mm6, mm3
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psrlq mm7, 8
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psllq mm6, 56
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por mm7, mm6
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%endif
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%if i<7
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psrlq mm0, 8
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psrlq mm1, 8
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psrlq mm2, 8
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%endif
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%assign i i+1
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%endrep
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movq [dstq+wq], mm7
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add wq, 8
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jl .loop
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movzx r2d, byte [dstq-1]
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mov [leftq], r2d
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movzx r2d, byte [topq-1]
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mov [left_topq], r2d
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RET
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%macro ADD_HFYU_LEFT_LOOP 2 ; %1 = dst_is_aligned, %2 = src_is_aligned
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add srcq, wq
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add dstq, wq
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neg wq
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%%.loop:
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%if %2
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mova m1, [srcq+wq]
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%else
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movu m1, [srcq+wq]
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%endif
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mova m2, m1
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psllw m1, 8
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paddb m1, m2
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mova m2, m1
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pshufb m1, m3
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paddb m1, m2
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pshufb m0, m5
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mova m2, m1
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pshufb m1, m4
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paddb m1, m2
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%if mmsize == 16
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mova m2, m1
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pshufb m1, m6
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paddb m1, m2
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%endif
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paddb m0, m1
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%if %1
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mova [dstq+wq], m0
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%else
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movq [dstq+wq], m0
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movhps [dstq+wq+8], m0
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%endif
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add wq, mmsize
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jl %%.loop
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mov eax, mmsize-1
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sub eax, wd
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movd m1, eax
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pshufb m0, m1
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movd eax, m0
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RET
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%endmacro
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; int ff_add_hfyu_left_pred(uint8_t *dst, const uint8_t *src, int w, int left)
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INIT_MMX ssse3
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cglobal add_hfyu_left_pred, 3,3,7, dst, src, w, left
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.skip_prologue:
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mova m5, [pb_7]
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mova m4, [pb_zzzz3333zzzzbbbb]
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mova m3, [pb_zz11zz55zz99zzdd]
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movd m0, leftm
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psllq m0, 56
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ADD_HFYU_LEFT_LOOP 1, 1
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INIT_XMM ssse3
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cglobal add_hfyu_left_pred_unaligned, 3,3,7, dst, src, w, left
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mova m5, [pb_f]
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mova m6, [pb_zzzzzzzz77777777]
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mova m4, [pb_zzzz3333zzzzbbbb]
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mova m3, [pb_zz11zz55zz99zzdd]
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movd m0, leftm
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pslldq m0, 15
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test srcq, 15
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jnz .src_unaligned
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test dstq, 15
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jnz .dst_unaligned
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ADD_HFYU_LEFT_LOOP 1, 1
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.dst_unaligned:
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ADD_HFYU_LEFT_LOOP 0, 1
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.src_unaligned:
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ADD_HFYU_LEFT_LOOP 0, 0
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