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;******************************************************************************
;* VC1 loopfilter optimizations
;* Copyright (c) 2009 David Conrad
;*
;* 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"
cextern pw_4
cextern pw_5
SECTION .text
; dst_low, dst_high (src), zero
; zero-extends one vector from 8 to 16 bits
%macro UNPACK_8TO16 4
mova m%2, m%3
punpckh%1 m%3, m%4
punpckl%1 m%2, m%4
%endmacro
%macro STORE_4_WORDS 6
%if cpuflag(sse4)
pextrw %1, %5, %6+0
pextrw %2, %5, %6+1
pextrw %3, %5, %6+2
pextrw %4, %5, %6+3
%else
movd %6d, %5
%if mmsize==16
psrldq %5, 4
%else
psrlq %5, 32
%endif
mov %1, %6w
shr %6, 16
mov %2, %6w
movd %6d, %5
mov %3, %6w
shr %6, 16
mov %4, %6w
%endif
%endmacro
; in: p1 p0 q0 q1, clobbers p0
; out: p1 = (2*(p1 - q1) - 5*(p0 - q0) + 4) >> 3
%macro VC1_LOOP_FILTER_A0 4
psubw %1, %4
psubw %2, %3
paddw %1, %1
pmullw %2, [pw_5]
psubw %1, %2
paddw %1, [pw_4]
psraw %1, 3
%endmacro
; in: p0 q0 a0 a1 a2
; m0 m1 m7 m6 m5
; %1: size
; out: m0=p0' m1=q0'
%macro VC1_FILTER 1
PABSW m4, m7
PABSW m3, m6
PABSW m2, m5
mova m6, m4
pminsw m3, m2
pcmpgtw m6, m3 ; if (a2 < a0 || a1 < a0)
psubw m3, m4
pmullw m3, [pw_5] ; 5*(a3 - a0)
PABSW m2, m3
psraw m2, 3 ; abs(d/8)
pxor m7, m3 ; d_sign ^= a0_sign
pxor m5, m5
movd m3, r2d
%if %1 > 4
punpcklbw m3, m3
%endif
punpcklbw m3, m5
pcmpgtw m3, m4 ; if (a0 < pq)
pand m6, m3
mova m3, m0
psubw m3, m1
PABSW m4, m3
psraw m4, 1
pxor m3, m7 ; d_sign ^ clip_sign
psraw m3, 15
pminsw m2, m4 ; min(d, clip)
pcmpgtw m4, m5
pand m6, m4 ; filt3 (C return value)
; each set of 4 pixels is not filtered if the 3rd is not
%if mmsize==16
pshuflw m4, m6, 0xaa
%if %1 > 4
pshufhw m4, m4, 0xaa
%endif
%else
pshufw m4, m6, 0xaa
%endif
pandn m3, m4
pand m2, m6
pand m3, m2 ; d final
psraw m7, 15
pxor m3, m7
psubw m3, m7
psubw m0, m3
paddw m1, m3
packuswb m0, m0
packuswb m1, m1
%endmacro
; 1st param: size of filter
; 2nd param: mov suffix equivalent to the filter size
%macro VC1_V_LOOP_FILTER 2
pxor m5, m5
mov%2 m6, [r4]
mov%2 m4, [r4+r1]
mov%2 m7, [r4+2*r1]
mov%2 m0, [r4+r3]
punpcklbw m6, m5
punpcklbw m4, m5
punpcklbw m7, m5
punpcklbw m0, m5
VC1_LOOP_FILTER_A0 m6, m4, m7, m0
mov%2 m1, [r0]
mov%2 m2, [r0+r1]
punpcklbw m1, m5
punpcklbw m2, m5
mova m4, m0
VC1_LOOP_FILTER_A0 m7, m4, m1, m2
mov%2 m3, [r0+2*r1]
mov%2 m4, [r0+r3]
punpcklbw m3, m5
punpcklbw m4, m5
mova m5, m1
VC1_LOOP_FILTER_A0 m5, m2, m3, m4
VC1_FILTER %1
mov%2 [r4+r3], m0
mov%2 [r0], m1
%endmacro
; 1st param: size of filter
; NOTE: UNPACK_8TO16 this number of 8 bit numbers are in half a register
; 2nd (optional) param: temp register to use for storing words
%macro VC1_H_LOOP_FILTER 1-2
%if %1 == 4
movq m0, [r0 -4]
movq m1, [r0+ r1-4]
movq m2, [r0+2*r1-4]
movq m3, [r0+ r3-4]
TRANSPOSE4x4B 0, 1, 2, 3, 4
%else
movq m0, [r0 -4]
movq m4, [r0+ r1-4]
movq m1, [r0+2*r1-4]
movq m5, [r0+ r3-4]
movq m2, [r4 -4]
movq m6, [r4+ r1-4]
movq m3, [r4+2*r1-4]
movq m7, [r4+ r3-4]
punpcklbw m0, m4
punpcklbw m1, m5
punpcklbw m2, m6
punpcklbw m3, m7
TRANSPOSE4x4W 0, 1, 2, 3, 4
%endif
pxor m5, m5
UNPACK_8TO16 bw, 6, 0, 5
UNPACK_8TO16 bw, 7, 1, 5
VC1_LOOP_FILTER_A0 m6, m0, m7, m1
UNPACK_8TO16 bw, 4, 2, 5
mova m0, m1 ; m0 = p0
VC1_LOOP_FILTER_A0 m7, m1, m4, m2
UNPACK_8TO16 bw, 1, 3, 5
mova m5, m4
VC1_LOOP_FILTER_A0 m5, m2, m1, m3
SWAP 1, 4 ; m1 = q0
VC1_FILTER %1
punpcklbw m0, m1
%if %0 > 1
STORE_4_WORDS [r0-1], [r0+r1-1], [r0+2*r1-1], [r0+r3-1], m0, %2
%if %1 > 4
psrldq m0, 4
STORE_4_WORDS [r4-1], [r4+r1-1], [r4+2*r1-1], [r4+r3-1], m0, %2
%endif
%else
STORE_4_WORDS [r0-1], [r0+r1-1], [r0+2*r1-1], [r0+r3-1], m0, 0
STORE_4_WORDS [r4-1], [r4+r1-1], [r4+2*r1-1], [r4+r3-1], m0, 4
%endif
%endmacro
%macro START_V_FILTER 0
mov r4, r0
lea r3, [4*r1]
sub r4, r3
lea r3, [r1+2*r1]
imul r2, 0x01010101
%endmacro
%macro START_H_FILTER 1
lea r3, [r1+2*r1]
%if %1 > 4
lea r4, [r0+4*r1]
%endif
imul r2, 0x01010101
%endmacro
; void ff_vc1_v_loop_filter4_mmxext(uint8_t *src, ptrdiff_t stride, int pq)
INIT_MMX mmxext
cglobal vc1_v_loop_filter4, 3,5,0
START_V_FILTER
VC1_V_LOOP_FILTER 4, d
RET
; void ff_vc1_h_loop_filter4_mmxext(uint8_t *src, ptrdiff_t stride, int pq)
INIT_MMX mmxext
cglobal vc1_h_loop_filter4, 3,5,0
START_H_FILTER 4
VC1_H_LOOP_FILTER 4, r4
RET
INIT_XMM sse2
; void ff_vc1_v_loop_filter8_sse2(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_v_loop_filter8, 3,5,8
START_V_FILTER
VC1_V_LOOP_FILTER 8, q
RET
; void ff_vc1_h_loop_filter8_sse2(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_h_loop_filter8, 3,6,8
START_H_FILTER 8
VC1_H_LOOP_FILTER 8, r5
RET
INIT_MMX ssse3
; void ff_vc1_v_loop_filter4_ssse3(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_v_loop_filter4, 3,5,0
START_V_FILTER
VC1_V_LOOP_FILTER 4, d
RET
; void ff_vc1_h_loop_filter4_ssse3(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_h_loop_filter4, 3,5,0
START_H_FILTER 4
VC1_H_LOOP_FILTER 4, r4
RET
INIT_XMM ssse3
; void ff_vc1_v_loop_filter8_ssse3(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_v_loop_filter8, 3,5,8
START_V_FILTER
VC1_V_LOOP_FILTER 8, q
RET
; void ff_vc1_h_loop_filter8_ssse3(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_h_loop_filter8, 3,6,8
START_H_FILTER 8
VC1_H_LOOP_FILTER 8, r5
RET
INIT_XMM sse4
; void ff_vc1_h_loop_filter8_sse4(uint8_t *src, ptrdiff_t stride, int pq)
cglobal vc1_h_loop_filter8, 3,5,8
START_H_FILTER 8
VC1_H_LOOP_FILTER 8
RET
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