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FFmpeg/libavcodec/x86/vc1dsp_mc.asm

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;******************************************************************************
;* VC1 motion compensation optimizations
;* Copyright (c) 2007 Christophe GISQUET <christophe.gisquet@free.fr>
;*
;* 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_9
cextern pw_128
SECTION .text
%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 rndd
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, ptrdiff_t 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