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ffmpeg / libavcodec / x86 / vp56dsp.asm @ 888fa31e

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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>
 ;*
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+;* This file is part of Libav.
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+;*
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+;* Libav is free software; you can redistribute it and/or
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+;* 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.
 ;*
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+;* Libav is distributed in the hope that it will be useful,
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+;* 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
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+;* License along with Libav; if not, write to the Free Software
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+;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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+;******************************************************************************
 %include "x86inc.asm"
 %include "x86util.asm"
 cextern pw_64
 SECTION .text
 %macro DIAG4_MMX 6
     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
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+    punpckhbw     m4, m7
     punpckhbw     m5, m7
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+    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
 %endmacro
 %macro DIAG4_SSE2 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_MMX 0
     movq         m5, m3
     punpcklwd    m3, m3
     movq         m4, m3
     punpckldq    m3, m3
     punpckhdq    m4, m4
     punpckhwd    m5, m5
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+    movq         m2, m5
     punpckhdq    m2, m2
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+    punpckldq    m5, m5
     movq [rsp+8*11], m3
     movq [rsp+8*12], m4
     movq [rsp+8*13], m5
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+    movq [rsp+8*14], m2
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+%endmacro
 %macro SPLAT4REGS_SSE2 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
 %macro vp6_filter_diag4 2
 ; 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_%1, 5, 7, %2
     mov          r5, rsp         ; backup stack pointer
     and         rsp, ~(mmsize-1) ; align stack
 %ifidn %1, sse2
     sub         rsp, 8*11
 %else
     sub         rsp, 8*15
     movq         m6, [pw_64]
 %endif
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+%ifdef ARCH_X86_64
     movsxd       r2, r2d
 %endif
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+            Ronald S. Bultje
     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
 INIT_MMX
 %define DIAG4      DIAG4_MMX
 %define SPLAT4REGS SPLAT4REGS_MMX
 vp6_filter_diag4 mmx,  0
 INIT_XMM
 %define DIAG4      DIAG4_SSE2
 %define SPLAT4REGS SPLAT4REGS_SSE2
 vp6_filter_diag4 sse2, 8