mirror of https://git.ffmpeg.org/ffmpeg.git
144 lines
3.8 KiB
NASM
144 lines
3.8 KiB
NASM
;************************************************************************
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;* SIMD-optimized HuffYUV encoding functions
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;* Copyright (c) 2000, 2001 Fabrice Bellard
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;* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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;*
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;* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
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;* Conversion to NASM format by Tiancheng "Timothy" Gu <timothygu99@gmail.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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;* 51, Inc., Foundation 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 .text
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; void ff_diff_int16(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
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; unsigned mask, int w);
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%macro INT16_LOOP 2 ; %1 = a/u (aligned/unaligned), %2 = add/sub
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movd m4, maskd
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SPLATW m4, m4
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add wd, wd
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test wq, 2*mmsize - 1
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jz %%.tomainloop
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push tmpq
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%%.wordloop:
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sub wq, 2
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%ifidn %2, add
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mov tmpw, [srcq+wq]
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add tmpw, [dstq+wq]
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%else
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mov tmpw, [src1q+wq]
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sub tmpw, [src2q+wq]
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%endif
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and tmpw, maskw
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mov [dstq+wq], tmpw
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test wq, 2*mmsize - 1
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jnz %%.wordloop
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pop tmpq
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%%.tomainloop:
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%ifidn %2, add
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add srcq, wq
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%else
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add src1q, wq
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add src2q, wq
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%endif
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add dstq, wq
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neg wq
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jz %%.end
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%%.loop:
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%ifidn %2, add
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mov%1 m0, [srcq+wq]
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mov%1 m1, [dstq+wq]
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mov%1 m2, [srcq+wq+mmsize]
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mov%1 m3, [dstq+wq+mmsize]
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%else
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mov%1 m0, [src1q+wq]
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mov%1 m1, [src2q+wq]
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mov%1 m2, [src1q+wq+mmsize]
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mov%1 m3, [src2q+wq+mmsize]
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%endif
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p%2w m0, m1
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p%2w m2, m3
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pand m0, m4
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pand m2, m4
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mov%1 [dstq+wq] , m0
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mov%1 [dstq+wq+mmsize], m2
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add wq, 2*mmsize
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jl %%.loop
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%%.end:
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RET
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%endmacro
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%if ARCH_X86_32
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INIT_MMX mmx
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cglobal diff_int16, 5,5,5, dst, src1, src2, mask, w, tmp
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INT16_LOOP a, sub
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%endif
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INIT_XMM sse2
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cglobal diff_int16, 5,5,5, dst, src1, src2, mask, w, tmp
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test src1q, mmsize-1
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jnz .unaligned
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test src2q, mmsize-1
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jnz .unaligned
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test dstq, mmsize-1
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jnz .unaligned
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INT16_LOOP a, sub
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.unaligned:
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INT16_LOOP u, sub
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INIT_MMX mmxext
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cglobal sub_hfyu_median_pred_int16, 7,7,0, dst, src1, src2, mask, w, left, left_top
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add wd, wd
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movd mm7, maskd
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SPLATW mm7, mm7
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movq mm0, [src1q]
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movq mm2, [src2q]
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psllq mm0, 16
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psllq mm2, 16
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movd mm6, [left_topq]
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por mm0, mm6
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movd mm6, [leftq]
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por mm2, mm6
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xor maskq, maskq
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.loop:
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movq mm1, [src1q + maskq]
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movq mm3, [src2q + maskq]
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movq mm4, mm2
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psubw mm2, mm0
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paddw mm2, mm1
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pand mm2, mm7
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movq mm5, mm4
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pmaxsw mm4, mm1
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pminsw mm1, mm5
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pminsw mm4, mm2
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pmaxsw mm4, mm1
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psubw mm3, mm4
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pand mm3, mm7
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movq [dstq + maskq], mm3
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add maskq, 8
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movq mm0, [src1q + maskq - 2]
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movq mm2, [src2q + maskq - 2]
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cmp maskq, wq
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jb .loop
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movzx maskd, word [src1q + wq - 2]
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mov [left_topq], maskd
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movzx maskd, word [src2q + wq - 2]
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mov [leftq], maskd
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RET
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