FFmpeg/libavcodec/x86/mpegvideoencdsp.asm

;*****************************************************************************
;* SIMD-optimized MPEG encoding functions
;*****************************************************************************
;* Copyright (c) 2000, 2001 Fabrice Bellard
;* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
;*
;* 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"

SECTION .text
; int ff_pix_sum16(const uint8_t *pix, int line_size)
; %1 = number of loops
; %2 = number of GPRs used
%macro PIX_SUM16 3
cglobal pix_sum16, 2, %2, 6
    movsxdifnidn r1, r1d
    mov          r2, %1
    lea          r3, [r1*3]
%if notcpuflag(xop)
    pxor         m5, m5
%endif
    pxor         m4, m4
.loop:
%if cpuflag(xop)
    vphaddubq    m0, [r0]
    vphaddubq    m1, [r0+r1]
    vphaddubq    m2, [r0+r1*2]
    vphaddubq    m3, [r0+r3]
%else
    mova         m0, [r0]
    mova         m1, [r0+r1]
    mova         m2, [r0+r1*2]
    mova         m3, [r0+r3]
    psadbw       m0, m5
    psadbw       m1, m5
    psadbw       m2, m5
    psadbw       m3, m5
%endif ; cpuflag(xop)
    paddw        m1, m0
    paddw        m3, m2
    paddw        m3, m1
    paddw        m4, m3
    lea          r0, [r0+r1*%3]
    dec r2
    jne .loop
    pshufd       m0, m4, q0032
    paddd        m4, m0
    movd        eax, m4
    RET
%endmacro

INIT_XMM sse2
PIX_SUM16  4, 4, 4
%if HAVE_XOP_EXTERNAL
INIT_XMM xop
PIX_SUM16  4, 4, 4
%endif

; int ff_pix_norm1(const uint8_t *pix, int line_size)
; %1 = number of xmm registers used
; %2 = number of loops
%macro PIX_NORM1 2
cglobal pix_norm1, 2, 3, %1
    movsxdifnidn r1, r1d
    mov          r2, %2
    pxor         m0, m0
    pxor         m5, m5
.loop:
    mova         m2, [r0+0]
    mova         m3, [r0+r1]
    punpckhbw    m1, m2, m0
    punpcklbw    m2, m0
    punpckhbw    m4, m3, m0
    punpcklbw    m3, m0
    pmaddwd      m1, m1
    pmaddwd      m2, m2
    pmaddwd      m3, m3
    pmaddwd      m4, m4
    paddd        m2, m1
    paddd        m4, m3
    paddd        m5, m2
    paddd        m5, m4
    lea          r0, [r0+r1*2]
    dec r2
    jne .loop
    HADDD        m5, m1
    movd        eax, m5
    RET
%endmacro

INIT_XMM sse2
PIX_NORM1 6, 8