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FFmpeg/libavcodec/x86/lossless_videodsp.asm
Michael Niedermayer 042a82ca37 avcodec/x86/lossless_videodsp: Fix size of values read for left/left_top 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-06-19 05:53:41 +02:00

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;******************************************************************************
;* SIMD lossless video DSP utils
;* Copyright (c) 2008 Loren Merritt
;* Copyright (c) 2014 Michael Niedermayer
;*
;* This file is part of FFmpeg.
;*
;* FFmpeg is free software; you can redistribute it and/or
;* modify it under the terms of the GNU Lesser General Public
;* License as published by the Free Software Foundation; either
;* version 2.1 of the License, or (at your option) any later version.
;*
;* FFmpeg is distributed in the hope that it will be useful,
;* but WITHOUT ANY WARRANTY; without even the implied warranty of
;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;* Lesser General Public License for more details.
;*
;* You should have received a copy of the GNU Lesser General Public
;* License along with FFmpeg; if not, write to the Free Software
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "libavutil/x86/x86util.asm"
SECTION_RODATA
pb_ef: times 8 db 14,15
pb_67: times 8 db 6, 7
pb_zzzz2323zzzzabab: db -1,-1,-1,-1, 2, 3, 2, 3,-1,-1,-1,-1,10,11,10,11
pb_zzzzzzzz67676767: db -1,-1,-1,-1,-1,-1,-1,-1, 6, 7, 6, 7, 6, 7, 6, 7
SECTION_TEXT
%macro INT16_LOOP 2 ; %1 = a/u (aligned/unaligned), %2 = add/sub
movd m4, maskd
SPLATW m4, m4
add wd, wd
test wq, 2*mmsize - 1
jz %%.tomainloop
push tmpq
%%.wordloop:
sub wq, 2
%ifidn %2, add
mov tmpw, [srcq+wq]
add tmpw, [dstq+wq]
%else
mov tmpw, [src1q+wq]
sub tmpw, [src2q+wq]
%endif
and tmpw, maskw
mov [dstq+wq], tmpw
test wq, 2*mmsize - 1
jnz %%.wordloop
pop tmpq
%%.tomainloop:
%ifidn %2, add
add srcq, wq
%else
add src1q, wq
add src2q, wq
%endif
add dstq, wq
neg wq
jz %%.end
%%.loop:
%ifidn %2, add
mov%1 m0, [srcq+wq]
mov%1 m1, [dstq+wq]
mov%1 m2, [srcq+wq+mmsize]
mov%1 m3, [dstq+wq+mmsize]
%else
mov%1 m0, [src1q+wq]
mov%1 m1, [src2q+wq]
mov%1 m2, [src1q+wq+mmsize]
mov%1 m3, [src2q+wq+mmsize]
%endif
p%2w m0, m1
p%2w m2, m3
pand m0, m4
pand m2, m4
mov%1 [dstq+wq] , m0
mov%1 [dstq+wq+mmsize], m2
add wq, 2*mmsize
jl %%.loop
%%.end:
RET
%endmacro
INIT_MMX mmx
cglobal add_int16, 4,4,5, dst, src, mask, w, tmp
INT16_LOOP a, add
INIT_XMM sse2
cglobal add_int16, 4,4,5, dst, src, mask, w, tmp
test srcq, mmsize-1
jnz .unaligned
test dstq, mmsize-1
jnz .unaligned
INT16_LOOP a, add
.unaligned:
INT16_LOOP u, add
INIT_MMX mmx
cglobal diff_int16, 5,5,5, dst, src1, src2, mask, w, tmp
INT16_LOOP a, sub
INIT_XMM sse2
cglobal diff_int16, 5,5,5, dst, src1, src2, mask, w, tmp
test src1q, mmsize-1
jnz .unaligned
test src2q, mmsize-1
jnz .unaligned
test dstq, mmsize-1
jnz .unaligned
INT16_LOOP a, sub
.unaligned:
INT16_LOOP u, sub
%macro ADD_HFYU_LEFT_LOOP_INT16 2 ; %1 = dst alignment (a/u), %2 = src alignment (a/u)
add wd, wd
add srcq, wq
add dstq, wq
neg wq
%%.loop:
mov%2 m1, [srcq+wq]
mova m2, m1
pslld m1, 16
paddw m1, m2
mova m2, m1
pshufb m1, m3
paddw m1, m2
pshufb m0, m5
%if mmsize == 16
mova m2, m1
pshufb m1, m4
paddw m1, m2
%endif
paddw m0, m1
pand m0, m7
%ifidn %1, a
mova [dstq+wq], m0
%else
movq [dstq+wq], m0
movhps [dstq+wq+8], m0
%endif
add wq, mmsize
jl %%.loop
mov eax, mmsize-1
sub eax, wd
mov wd, eax
shl wd, 8
lea eax, [wd+eax-1]
movd m1, eax
pshufb m0, m1
movd eax, m0
RET
%endmacro
; int add_hfyu_left_pred_int16(uint16_t *dst, const uint16_t *src, unsigned mask, int w, int left)
INIT_MMX ssse3
cglobal add_hfyu_left_pred_int16, 4,4,8, dst, src, mask, w, left
.skip_prologue:
mova m5, [pb_67]
mova m3, [pb_zzzz2323zzzzabab]
movd m0, leftm
psllq m0, 48
movd m7, maskm
SPLATW m7 ,m7
ADD_HFYU_LEFT_LOOP_INT16 a, a
INIT_XMM sse4
cglobal add_hfyu_left_pred_int16, 4,4,8, dst, src, mask, w, left
mova m5, [pb_ef]
mova m4, [pb_zzzzzzzz67676767]
mova m3, [pb_zzzz2323zzzzabab]
movd m0, leftm
pslldq m0, 14
movd m7, maskm
SPLATW m7 ,m7
test srcq, 15
jnz .src_unaligned
test dstq, 15
jnz .dst_unaligned
ADD_HFYU_LEFT_LOOP_INT16 a, a
.dst_unaligned:
ADD_HFYU_LEFT_LOOP_INT16 u, a
.src_unaligned:
ADD_HFYU_LEFT_LOOP_INT16 u, u
; void add_hfyu_median_prediction_mmxext(uint8_t *dst, const uint8_t *top, const uint8_t *diff, int mask, int w, int *left, int *left_top)
INIT_MMX mmxext
cglobal add_hfyu_median_pred_int16, 7,7,0, dst, top, diff, mask, w, left, left_top
add wd, wd
movd mm6, maskd
SPLATW mm6, mm6
movq mm0, [topq]
movq mm2, mm0
movd mm4, [left_topq]
psllq mm2, 16
movq mm1, mm0
por mm4, mm2
movd mm3, [leftq]
psubw mm0, mm4 ; t-tl
add dstq, wq
add topq, wq
add diffq, wq
neg wq
jmp .skip
.loop:
movq mm4, [topq+wq]
movq mm0, mm4
psllq mm4, 16
por mm4, mm1
movq mm1, mm0 ; t
psubw mm0, mm4 ; t-tl
.skip:
movq mm2, [diffq+wq]
%assign i 0
%rep 4
movq mm4, mm0
paddw mm4, mm3 ; t-tl+l
pand mm4, mm6
movq mm5, mm3
pmaxsw mm3, mm1
pminsw mm5, mm1
pminsw mm3, mm4
pmaxsw mm3, mm5 ; median
paddw mm3, mm2 ; +residual
pand mm3, mm6
%if i==0
movq mm7, mm3
psllq mm7, 48
%else
movq mm4, mm3
psrlq mm7, 16
psllq mm4, 48
por mm7, mm4
%endif
%if i<3
psrlq mm0, 16
psrlq mm1, 16
psrlq mm2, 16
%endif
%assign i i+1
%endrep
movq [dstq+wq], mm7
add wq, 8
jl .loop
movzx r2d, word [dstq-2]
mov [leftq], r2d
movzx r2d, word [topq-2]
mov [left_topq], r2d
RET
cglobal sub_hfyu_median_pred_int16, 7,7,0, dst, src1, src2, mask, w, left, left_top
add wd, wd
movd mm7, maskd
SPLATW mm7, mm7
movq mm0, [src1q]
movq mm2, [src2q]
psllq mm0, 16
psllq mm2, 16
movd mm6, [left_topq]
por mm0, mm6
movd mm6, [leftq]
por mm2, mm6
xor maskq, maskq
.loop:
movq mm1, [src1q + maskq]
movq mm3, [src2q + maskq]
movq mm4, mm2
psubw mm2, mm0
paddw mm2, mm1
pand mm2, mm7
movq mm5, mm4
pmaxsw mm4, mm1
pminsw mm1, mm5
pminsw mm4, mm2
pmaxsw mm4, mm1
psubw mm3, mm4
pand mm3, mm7
movq [dstq + maskq], mm3
add maskq, 8
movq mm0, [src1q + maskq - 2]
movq mm2, [src2q + maskq - 2]
cmp maskq, wq
jb .loop
movzx maskd, word [src1q + wq - 2]
mov [left_topq], maskd
movzx maskd, word [src2q + wq - 2]
mov [leftq], maskd
RET
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