mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
99 lines
2.9 KiB
NASM
99 lines
2.9 KiB
NASM
;******************************************************************************
|
|
;* MMX/SSE2-optimized functions for the VP6 decoder
|
|
;* Copyright (C) 2009 Sebastien Lucas <sebastien.lucas@gmail.com>
|
|
;* Copyright (C) 2009 Zuxy Meng <zuxy.meng@gmail.com>
|
|
;*
|
|
;* 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_64
|
|
|
|
SECTION .text
|
|
|
|
%macro DIAG4 6
|
|
movq m0, [%1+%2]
|
|
movq m1, [%1+%3]
|
|
punpcklbw m0, m7
|
|
punpcklbw m1, m7
|
|
pmullw m0, m4 ; src[x-8 ] * biweight [0]
|
|
pmullw m1, m5 ; src[x ] * biweight [1]
|
|
paddw m0, m1
|
|
movq m1, [%1+%4]
|
|
movq m2, [%1+%5]
|
|
punpcklbw m1, m7
|
|
punpcklbw m2, m7
|
|
pmullw m1, m6 ; src[x+8 ] * biweight [2]
|
|
pmullw m2, m3 ; src[x+16] * biweight [3]
|
|
paddw m1, m2
|
|
paddsw m0, m1
|
|
paddsw m0, [pw_64] ; Add 64
|
|
psraw m0, 7
|
|
packuswb m0, m0
|
|
movq [%6], m0
|
|
%endmacro
|
|
|
|
%macro SPLAT4REGS 0
|
|
pshuflw m4, m3, 0x0
|
|
pshuflw m5, m3, 0x55
|
|
pshuflw m6, m3, 0xAA
|
|
pshuflw m3, m3, 0xFF
|
|
punpcklqdq m4, m4
|
|
punpcklqdq m5, m5
|
|
punpcklqdq m6, m6
|
|
punpcklqdq m3, m3
|
|
%endmacro
|
|
|
|
; void ff_vp6_filter_diag4_<opt>(uint8_t *dst, uint8_t *src, ptrdiff_t stride,
|
|
; const int16_t h_weight[4], const int16_t v_weights[4])
|
|
INIT_XMM sse2
|
|
cglobal vp6_filter_diag4, 5, 7, 8
|
|
mov r5, rsp ; backup stack pointer
|
|
and rsp, ~(mmsize-1) ; align stack
|
|
sub rsp, 8*11
|
|
|
|
sub r1, r2
|
|
|
|
pxor m7, m7
|
|
movq m3, [r3]
|
|
SPLAT4REGS
|
|
|
|
mov r3, rsp
|
|
mov r6, 11
|
|
.nextrow:
|
|
DIAG4 r1, -1, 0, 1, 2, r3
|
|
add r3, 8
|
|
add r1, r2
|
|
dec r6
|
|
jnz .nextrow
|
|
|
|
movq m3, [r4]
|
|
SPLAT4REGS
|
|
|
|
lea r3, [rsp+8]
|
|
mov r6, 8
|
|
.nextcol:
|
|
DIAG4 r3, -8, 0, 8, 16, r0
|
|
add r3, 8
|
|
add r0, r2
|
|
dec r6
|
|
jnz .nextcol
|
|
|
|
mov rsp, r5 ; restore stack pointer
|
|
RET
|