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- ;******************************************************************************
- ;* 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 Libav.
- ;*
- ;* Libav 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.
- ;*
- ;* Libav 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 Libav; if not, write to the Free Software
- ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- ;******************************************************************************
-
- %include "x86inc.asm"
- %include "x86util.asm"
-
- cextern pw_64
-
- SECTION .text
-
- %macro DIAG4 6
- %if mmsize == 8
- movq m0, [%1+%2]
- movq m1, [%1+%3]
- movq m3, m0
- movq m4, m1
- punpcklbw m0, m7
- punpcklbw m1, m7
- punpckhbw m3, m7
- punpckhbw m4, m7
- pmullw m0, [rsp+8*11] ; src[x-8 ] * biweight [0]
- pmullw m1, [rsp+8*12] ; src[x ] * biweight [1]
- pmullw m3, [rsp+8*11] ; src[x-8 ] * biweight [0]
- pmullw m4, [rsp+8*12] ; src[x ] * biweight [1]
- paddw m0, m1
- paddw m3, m4
- movq m1, [%1+%4]
- movq m2, [%1+%5]
- movq m4, m1
- movq m5, m2
- punpcklbw m1, m7
- punpcklbw m2, m7
- punpckhbw m4, m7
- punpckhbw m5, m7
- pmullw m1, [rsp+8*13] ; src[x+8 ] * biweight [2]
- pmullw m2, [rsp+8*14] ; src[x+16] * biweight [3]
- pmullw m4, [rsp+8*13] ; src[x+8 ] * biweight [2]
- pmullw m5, [rsp+8*14] ; src[x+16] * biweight [3]
- paddw m1, m2
- paddw m4, m5
- paddsw m0, m1
- paddsw m3, m4
- paddsw m0, m6 ; Add 64
- paddsw m3, m6 ; Add 64
- psraw m0, 7
- psraw m3, 7
- packuswb m0, m3
- movq [%6], m0
- %else ; mmsize == 16
- 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
- %endif ; mmsize == 8/16
- %endmacro
-
- %macro SPLAT4REGS 0
- %if mmsize == 8
- movq m5, m3
- punpcklwd m3, m3
- movq m4, m3
- punpckldq m3, m3
- punpckhdq m4, m4
- punpckhwd m5, m5
- movq m2, m5
- punpckhdq m2, m2
- punpckldq m5, m5
- movq [rsp+8*11], m3
- movq [rsp+8*12], m4
- movq [rsp+8*13], m5
- movq [rsp+8*14], m2
- %else ; mmsize == 16
- 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
- %endif ; mmsize == 8/16
- %endmacro
-
- %macro vp6_filter_diag4 0
- ; void ff_vp6_filter_diag4_<opt>(uint8_t *dst, uint8_t *src, int stride,
- ; const int16_t h_weight[4], const int16_t v_weights[4])
- cglobal vp6_filter_diag4, 5, 7, 8
- mov r5, rsp ; backup stack pointer
- and rsp, ~(mmsize-1) ; align stack
- %if mmsize == 16
- sub rsp, 8*11
- %else
- sub rsp, 8*15
- movq m6, [pw_64]
- %endif
- %if ARCH_X86_64
- movsxd r2, r2d
- %endif
-
- 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
- %endmacro
-
- %if ARCH_X86_32
- INIT_MMX mmx
- vp6_filter_diag4
- %endif
-
- INIT_XMM sse2
- vp6_filter_diag4
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