mc-a.asm

DM642 H.264 codec DM642 H.264 codec DM642 H.264 codec DM642 H.264 codec

;*****************************************************************************
;* mc.asm: h264 encoder library
;*****************************************************************************
;* Copyright (C) 2003 x264 project
;* $Id: mc.asm,v 1.3 2004/06/18 01:59:58 chenm001 Exp $
;*
;* Authors: Min Chen <chenm001.163.com> (converted to nasm)
;*          Laurent Aimar <[e-mail]> (init algorithm)
;*
;* This program is free software; you can redistribute it and/or modify
;* it under the terms of the GNU General Public License as published by
;* the Free Software Foundation; either version 2 of the License, or
;* (at your option) any later version.
;*
;* This program 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 General Public License for more details.
;*
;* You should have received a copy of the GNU General Public License
;* along with this program; if not, write to the Free Software
;* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
;*****************************************************************************

;*****************************************************************************
;*                                                                           *
;*  Revision history:                                                        *
;*                                                                           *
;*  2004.05.17 portab mc_copy_w4/8/16 (CM)                                   *
;*                                                                           *
;*****************************************************************************

BITS 64

;=============================================================================
; Macros and other preprocessor constants
;=============================================================================

%include "amd64inc.asm"

;=============================================================================
; Constants
;=============================================================================

SECTION .rodata

ALIGN 16
pw_4:  times 4 dw  4
pw_8:  times 4 dw  8
pw_32: times 4 dw 32
pw_64: times 4 dw 64

;=============================================================================
; Code
;=============================================================================

SECTION .text

cglobal x264_pixel_avg_w4_mmxext
cglobal x264_pixel_avg_w8_mmxext
cglobal x264_pixel_avg_w16_mmxext
cglobal x264_pixel_avg_w16_sse2

cglobal x264_pixel_avg_weight_4x4_mmxext
cglobal x264_pixel_avg_weight_w8_mmxext
cglobal x264_pixel_avg_weight_w16_mmxext

cglobal x264_mc_copy_w4_mmxext
cglobal x264_mc_copy_w8_mmxext
cglobal x264_mc_copy_w16_mmxext
cglobal x264_mc_copy_w16_sse2

cglobal x264_mc_chroma_sse

;=============================================================================
; pixel avg
;=============================================================================

ALIGN 16
;-----------------------------------------------------------------------------
; void x264_pixel_avg_w4_mmxext( uint8_t *dst,  int i_dst_stride,
;                                uint8_t *src1, int i_src1_stride,
;                                uint8_t *src2, int i_src2_stride,
;                                int i_height );
;-----------------------------------------------------------------------------
x264_pixel_avg_w4_mmxext:
    mov         r10, parm5q         ; src2
    movsxd      r11, parm6d         ; i_src2_stride
    movsxd      rax, parm7d         ; i_height

ALIGN 4
.height_loop    
    movd        mm0, [parm3q]
    pavgb       mm0, [r10]
    movd        mm1, [parm3q+parm4q]
    pavgb       mm1, [r10+r11]
    movd        [parm1q], mm0
    movd        [parm1q+parm2q], mm1
    dec         rax
    dec         rax
    lea         parm3q, [parm3q+parm4q*2]
    lea         r10, [r10+r11*2]
    lea         parm1q, [parm1q+parm2q*2]
    jne         .height_loop

    ret

                          

ALIGN 16
;-----------------------------------------------------------------------------
; void x264_pixel_avg_w8_mmxext( uint8_t *dst,  int i_dst_stride,
;                                uint8_t *src1, int i_src1_stride,
;                                uint8_t *src2, int i_src2_stride,
;                                int i_height );
;-----------------------------------------------------------------------------
x264_pixel_avg_w8_mmxext:

    mov         r10, parm5q         ; src2
    movsxd      r11, parm6d         ; i_src2_stride
    movsxd      rax, parm7d         ; i_height

ALIGN 4
.height_loop    
    movq        mm0, [parm3q]
    pavgb       mm0, [r10]
    movq        [parm1q], mm0
    dec         rax
    lea         parm3q, [parm3q+parm4q]
    lea         r10, [r10+r11]
    lea         parm1q, [parm1q+parm2q]
    jne         .height_loop

    ret

ALIGN 16
;-----------------------------------------------------------------------------
; void x264_pixel_avg_w16_mmxext( uint8_t *dst,  int i_dst_stride,
;                                 uint8_t *src1, int i_src1_stride,
;                                 uint8_t *src2, int i_src2_stride,
;                                 int i_height );
;-----------------------------------------------------------------------------
x264_pixel_avg_w16_mmxext:
    mov         r10, parm5q         ; src2
    movsxd      r11, parm6d         ; i_src2_stride
    movsxd      rax, parm7d         ; i_height

ALIGN 4
.height_loop    
    movq        mm0, [parm3q  ]
    movq        mm1, [parm3q+8]
    pavgb       mm0, [r10  ]
    pavgb       mm1, [r10+8]
    movq        [parm1q  ], mm0
    movq        [parm1q+8], mm1
    dec         rax
    lea         parm3q, [parm3q+parm4q]
    lea         r10, [r10+r11]
    lea         parm1q, [parm1q+parm2q]
    jne         .height_loop

    ret

ALIGN 16
;-----------------------------------------------------------------------------
; void x264_pixel_avg_w16_sse2( uint8_t *dst,  int i_dst_stride,
;                               uint8_t *src1, int i_src1_stride,
;                               uint8_t *src2, int i_src2_stride,
;                               int i_height );
;-----------------------------------------------------------------------------
x264_pixel_avg_w16_sse2:
    mov         r10, parm5q         ; src2
    movsxd      r11, parm6d         ; i_src2_stride
    movsxd      rax, parm7d         ; i_height

ALIGN 4
.height_loop    
    movdqu      xmm0, [parm3q]
    pavgb       xmm0, [r10]
    movdqu      [parm1q], xmm0

    dec         rax
    lea         parm3q, [parm3q+parm4q]
    lea         r10, [r10+r11]
    lea         parm1q, [parm1q+parm2q]
    jne         .height_loop

    ret



;=============================================================================
; weighted prediction
;=============================================================================
; implicit bipred only:
; assumes log2_denom = 5, offset = 0, weight1 + weight2 = 64

%macro BIWEIGHT_4P_MMX 2
    movd      mm0, %1
    movd      mm1, %2
    punpcklbw mm0, mm7
    punpcklbw mm1, mm7
    pmullw    mm0, mm4
    pmullw    mm1, mm5
    paddw     mm0, mm1
    paddw     mm0, mm6
    psraw     mm0, 6
    pmaxsw    mm0, mm7
    packuswb  mm0, mm0
    movd      %1,  mm0
%endmacro

%macro BIWEIGHT_START_MMX 0
;   mov     rdi, rdi      ; dst
;   movsxd  rsi, esi      ; i_dst
;   mov     rdx, rdx      ; src
;   movsxd  rcx, ecx      ; i_src
;   movsxd  r8,  r8d      ; i_weight_dst
;   movsxd  r9,  r9d      ; i_height
    mov     r11d, parm6d  ; i_height

    movd    mm4, parm5d
    pshufw  mm4, mm4, 0   ; weight_dst
    movq    mm5, [pw_64 GLOBAL]
    psubw   mm5, mm4      ; weight_src
    movq    mm6, [pw_32 GLOBAL] ; rounding
    pxor    mm7, mm7

    ALIGN 4
    .height_loop
%endmacro

ALIGN 16
;-----------------------------------------------------------------------------
;   int x264_pixel_avg_weight_w16_mmxext( uint8_t *dst, int, uint8_t *src, int, int i_weight, int )
;-----------------------------------------------------------------------------
x264_pixel_avg_weight_w16_mmxext:
    BIWEIGHT_START_MMX

    BIWEIGHT_4P_MMX  [parm1q   ], [parm3q   ]
    BIWEIGHT_4P_MMX  [parm1q+ 4], [parm3q+ 4]
    BIWEIGHT_4P_MMX  [parm1q+ 8], [parm3q+ 8]
    BIWEIGHT_4P_MMX  [parm1q+12], [parm3q+12]