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FFmpeg/libavcodec/x86/vc1dsp.asm
Timothy Gu bcc223523e x86/vc1dsp: Port vc1_*_hor_16b_shift2 to NASM format 
Reviewed-by: Christophe Gisquet <christophe.gisquet@gmail.com>
2016-02-14 11:11:02 -08:00

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NASM
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;******************************************************************************
;* VC1 DSP optimizations
;* Copyright (c) 2007 Christophe GISQUET <christophe.gisquet@free.fr>
;* 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
cextern pw_9
cextern pw_128
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
%macro VC1_LF 0
cglobal vc1_v_loop_filter_internal
VC1_V_LOOP_FILTER 4, d
ret
cglobal vc1_h_loop_filter_internal
VC1_H_LOOP_FILTER 4, r4
ret
; void ff_vc1_v_loop_filter4_mmxext(uint8_t *src, int stride, int pq)
cglobal vc1_v_loop_filter4, 3,5,0
START_V_FILTER
call vc1_v_loop_filter_internal
RET
; void ff_vc1_h_loop_filter4_mmxext(uint8_t *src, int stride, int pq)
cglobal vc1_h_loop_filter4, 3,5,0
START_H_FILTER 4
call vc1_h_loop_filter_internal
RET
; void ff_vc1_v_loop_filter8_mmxext(uint8_t *src, int stride, int pq)
cglobal vc1_v_loop_filter8, 3,5,0
START_V_FILTER
call vc1_v_loop_filter_internal
add r4, 4
add r0, 4
call vc1_v_loop_filter_internal
RET
; void ff_vc1_h_loop_filter8_mmxext(uint8_t *src, int stride, int pq)
cglobal vc1_h_loop_filter8, 3,5,0
START_H_FILTER 4
call vc1_h_loop_filter_internal
lea r0, [r0+4*r1]
call vc1_h_loop_filter_internal
RET
%endmacro
INIT_MMX mmxext
VC1_LF
INIT_XMM sse2
; void ff_vc1_v_loop_filter8_sse2(uint8_t *src, int 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, int 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, int 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, int 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, int 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, int 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, int stride, int pq)
cglobal vc1_h_loop_filter8, 3,5,8
START_H_FILTER 8
VC1_H_LOOP_FILTER 8
RET
%if HAVE_MMX_INLINE
; XXX some of these macros are not used right now, but they will in the future
; when more functions are ported.
%macro OP_PUT 2 ; dst, src
%endmacro
%macro OP_AVG 2 ; dst, src
pavgb %1, %2
%endmacro
%macro NORMALIZE_MMX 1 ; shift
paddw m3, m7 ; +bias-r
paddw m4, m7 ; +bias-r
psraw m3, %1
psraw m4, %1
%endmacro
%macro TRANSFER_DO_PACK 2 ; op, dst
packuswb m3, m4
%1 m3, [%2]
mova [%2], m3
%endmacro
%macro TRANSFER_DONT_PACK 2 ; op, dst
%1 m3, [%2]
%1 m3, [%2 + mmsize]
mova [%2], m3
mova [mmsize + %2], m4
%endmacro
; see MSPEL_FILTER13_CORE for use as UNPACK macro
%macro DO_UNPACK 1 ; reg
punpcklbw %1, m0
%endmacro
%macro DONT_UNPACK 1 ; reg
%endmacro
; Compute the rounder 32-r or 8-r and unpacks it to m7
%macro LOAD_ROUNDER_MMX 1 ; round
movd m7, %1
punpcklwd m7, m7
punpckldq m7, m7
%endmacro
%macro SHIFT2_LINE 5 ; off, r0, r1, r2, r3
paddw m%3, m%4
movh m%2, [srcq + stride_neg2]
pmullw m%3, m6
punpcklbw m%2, m0
movh m%5, [srcq + strideq]
psubw m%3, m%2
punpcklbw m%5, m0
paddw m%3, m7
psubw m%3, m%5
psraw m%3, shift
movu [dstq + %1], m%3
add srcq, strideq
%endmacro
INIT_MMX mmx
; void ff_vc1_put_ver_16b_shift2_mmx(int16_t *dst, const uint8_t *src,
; x86_reg stride, int rnd, int64_t shift)
; Sacrificing m6 makes it possible to pipeline loads from src
%if ARCH_X86_32
cglobal vc1_put_ver_16b_shift2, 3,6,0, dst, src, stride
DECLARE_REG_TMP 3, 4, 5
%define rnd r3mp
%define shift qword r4m
%else ; X86_64
cglobal vc1_put_ver_16b_shift2, 4,7,0, dst, src, stride
DECLARE_REG_TMP 4, 5, 6
%define rnd r3d
; We need shift either in memory or in a mm reg as it's used in psraw
; On WIN64, the arg is already on the stack
; On UNIX64, m5 doesn't seem to be used
%if WIN64
%define shift r4mp
%else ; UNIX64
%define shift m5
mova shift, r4q
%endif ; WIN64
%endif ; X86_32
%define stride_neg2 t0q
%define stride_9minus4 t1q
%define i t2q
mov stride_neg2, strideq
neg stride_neg2
add stride_neg2, stride_neg2
lea stride_9minus4, [strideq * 9 - 4]
mov i, 3
LOAD_ROUNDER_MMX rnd
mova m6, [pw_9]
pxor m0, m0
.loop:
movh m2, [srcq]
add srcq, strideq
movh m3, [srcq]
punpcklbw m2, m0
punpcklbw m3, m0
SHIFT2_LINE 0, 1, 2, 3, 4
SHIFT2_LINE 24, 2, 3, 4, 1
SHIFT2_LINE 48, 3, 4, 1, 2
SHIFT2_LINE 72, 4, 1, 2, 3
SHIFT2_LINE 96, 1, 2, 3, 4
SHIFT2_LINE 120, 2, 3, 4, 1
SHIFT2_LINE 144, 3, 4, 1, 2
SHIFT2_LINE 168, 4, 1, 2, 3
sub srcq, stride_9minus4
add dstq, 8
dec i
jnz .loop
REP_RET
%undef rnd
%undef shift
%undef stride_neg2
%undef stride_9minus4
%undef i
; void ff_vc1_*_hor_16b_shift2_mmx(uint8_t *dst, x86_reg stride,
; const int16_t *src, int rnd);
; Data is already unpacked, so some operations can directly be made from
; memory.
%macro HOR_16B_SHIFT2 2 ; op, opname
cglobal vc1_%2_hor_16b_shift2, 4, 5, 0, dst, stride, src, rnd, h
mov hq, 8
sub srcq, 2
sub rndd, (-1+9+9-1) * 1024 ; add -1024 bias
LOAD_ROUNDER_MMX rndq
mova m5, [pw_9]
mova m6, [pw_128]
pxor m0, m0
.loop:
mova m1, [srcq + 2 * 0]
mova m2, [srcq + 2 * 0 + mmsize]
mova m3, [srcq + 2 * 1]
mova m4, [srcq + 2 * 1 + mmsize]
paddw m3, [srcq + 2 * 2]
paddw m4, [srcq + 2 * 2 + mmsize]
paddw m1, [srcq + 2 * 3]
paddw m2, [srcq + 2 * 3 + mmsize]
pmullw m3, m5
pmullw m4, m5
psubw m3, m1
psubw m4, m2
NORMALIZE_MMX 7
; remove bias
paddw m3, m6
paddw m4, m6
TRANSFER_DO_PACK %1, dstq
add srcq, 24
add dstq, strideq
dec hq
jnz .loop
RET
%endmacro
INIT_MMX mmx
HOR_16B_SHIFT2 OP_PUT, put
INIT_MMX mmxext
HOR_16B_SHIFT2 OP_AVG, avg
%endif ; HAVE_MMX_INLINE
%macro INV_TRANS_INIT 0
movsxdifnidn linesizeq, linesized
movd m0, blockd
SPLATW m0, m0
pxor m1, m1
psubw m1, m0
packuswb m0, m0
packuswb m1, m1
DEFINE_ARGS dest, linesize, linesize3
lea linesize3q, [linesizeq*3]
%endmacro
%macro INV_TRANS_PROCESS 1
mov%1 m2, [destq+linesizeq*0]
mov%1 m3, [destq+linesizeq*1]
mov%1 m4, [destq+linesizeq*2]
mov%1 m5, [destq+linesize3q]
paddusb m2, m0
paddusb m3, m0
paddusb m4, m0
paddusb m5, m0
psubusb m2, m1
psubusb m3, m1
psubusb m4, m1
psubusb m5, m1
mov%1 [linesizeq*0+destq], m2
mov%1 [linesizeq*1+destq], m3
mov%1 [linesizeq*2+destq], m4
mov%1 [linesize3q +destq], m5
%endmacro
; ff_vc1_inv_trans_?x?_dc_mmxext(uint8_t *dest, int linesize, int16_t *block)
INIT_MMX mmxext
cglobal vc1_inv_trans_4x4_dc, 3,4,0, dest, linesize, block
movsx r3d, WORD [blockq]
mov blockd, r3d ; dc
shl blockd, 4 ; 16 * dc
lea blockd, [blockq+r3+4] ; 17 * dc + 4
sar blockd, 3 ; >> 3
mov r3d, blockd ; dc
shl blockd, 4 ; 16 * dc
lea blockd, [blockq+r3+64] ; 17 * dc + 64
sar blockd, 7 ; >> 7
INV_TRANS_INIT
INV_TRANS_PROCESS h
RET
INIT_MMX mmxext
cglobal vc1_inv_trans_4x8_dc, 3,4,0, dest, linesize, block
movsx r3d, WORD [blockq]
mov blockd, r3d ; dc
shl blockd, 4 ; 16 * dc
lea blockd, [blockq+r3+4] ; 17 * dc + 4
sar blockd, 3 ; >> 3
shl blockd, 2 ; 4 * dc
lea blockd, [blockq*3+64] ; 12 * dc + 64
sar blockd, 7 ; >> 7
INV_TRANS_INIT
INV_TRANS_PROCESS h
lea destq, [destq+linesizeq*4]
INV_TRANS_PROCESS h
RET
INIT_MMX mmxext
cglobal vc1_inv_trans_8x4_dc, 3,4,0, dest, linesize, block
movsx blockd, WORD [blockq] ; dc
lea blockd, [blockq*3+1] ; 3 * dc + 1
sar blockd, 1 ; >> 1
mov r3d, blockd ; dc
shl blockd, 4 ; 16 * dc
lea blockd, [blockq+r3+64] ; 17 * dc + 64
sar blockd, 7 ; >> 7
INV_TRANS_INIT
INV_TRANS_PROCESS a
RET
INIT_MMX mmxext
cglobal vc1_inv_trans_8x8_dc, 3,3,0, dest, linesize, block
movsx blockd, WORD [blockq] ; dc
lea blockd, [blockq*3+1] ; 3 * dc + 1
sar blockd, 1 ; >> 1
lea blockd, [blockq*3+16] ; 3 * dc + 16
sar blockd, 5 ; >> 5
INV_TRANS_INIT
INV_TRANS_PROCESS a
lea destq, [destq+linesizeq*4]
INV_TRANS_PROCESS a
RET
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