dct-a.asm

从服务器上下的x264编码器C源码……希望对大家有帮助……这个是09年4月的

    packuswb  xmm1, xmm1
    movdqa    xmm2, xmm0
    movdqa    xmm3, xmm1
    pshufb    xmm0, xmm5
    pshufb    xmm2, xmm6
    pshufb    xmm1, xmm5
    pshufb    xmm3, xmm6
    IDCT_DC_STORE FDEC_STRIDE*-4, xmm0, xmm1
    IDCT_DC_STORE 0, xmm2, xmm3
    ret

;-----------------------------------------------------------------------------
; void x264_zigzag_scan_8x8_frame_ssse3( int16_t level[64], int16_t dct[8][8] )
;-----------------------------------------------------------------------------
%macro SCAN_8x8 1
cglobal x264_zigzag_scan_8x8_frame_%1, 2,2,8
    movdqa    xmm0, [r1]
    movdqa    xmm1, [r1+16]
    movdq2q    mm0, xmm0
    PALIGNR   xmm1, xmm1, 14, xmm2
    movdq2q    mm1, xmm1

    movdqa    xmm2, [r1+32]
    movdqa    xmm3, [r1+48]
    PALIGNR   xmm2, xmm2, 12, xmm4
    movdq2q    mm2, xmm2
    PALIGNR   xmm3, xmm3, 10, xmm4
    movdq2q    mm3, xmm3

    punpckhwd xmm0, xmm1
    punpckhwd xmm2, xmm3

    movq       mm4, mm1
    movq       mm5, mm1
    movq       mm6, mm2
    movq       mm7, mm3
    punpckhwd  mm1, mm0
    psllq      mm0, 16
    psrlq      mm3, 16
    punpckhdq  mm1, mm1
    punpckhdq  mm2, mm0
    punpcklwd  mm0, mm4
    punpckhwd  mm4, mm3
    punpcklwd  mm4, mm2
    punpckhdq  mm0, mm2
    punpcklwd  mm6, mm3
    punpcklwd  mm5, mm7
    punpcklwd  mm5, mm6

    movdqa    xmm4, [r1+64]
    movdqa    xmm5, [r1+80]
    movdqa    xmm6, [r1+96]
    movdqa    xmm7, [r1+112]

    movq [r0+2*00], mm0
    movq [r0+2*04], mm4
    movd [r0+2*08], mm1
    movq [r0+2*36], mm5
    movq [r0+2*46], mm6

    PALIGNR   xmm4, xmm4, 14, xmm3
    movdq2q    mm4, xmm4
    PALIGNR   xmm5, xmm5, 12, xmm3
    movdq2q    mm5, xmm5
    PALIGNR   xmm6, xmm6, 10, xmm3
    movdq2q    mm6, xmm6
%ifidn %1, ssse3
    PALIGNR   xmm7, xmm7, 8, xmm3
    movdq2q    mm7, xmm7
%else
    movhlps   xmm3, xmm7
    punpcklqdq xmm7, xmm7
    movdq2q    mm7, xmm3
%endif

    punpckhwd xmm4, xmm5
    punpckhwd xmm6, xmm7

    movq       mm0, mm4
    movq       mm1, mm5
    movq       mm3, mm7
    punpcklwd  mm7, mm6
    psrlq      mm6, 16
    punpcklwd  mm4, mm6
    punpcklwd  mm5, mm4
    punpckhdq  mm4, mm3
    punpcklwd  mm3, mm6
    punpckhwd  mm3, mm4
    punpckhwd  mm0, mm1
    punpckldq  mm4, mm0
    punpckhdq  mm0, mm6
    pshufw     mm4, mm4, 0x6c

    movq [r0+2*14], mm4
    movq [r0+2*25], mm0
    movd [r0+2*54], mm7
    movq [r0+2*56], mm5
    movq [r0+2*60], mm3

    movdqa    xmm3, xmm0
    movdqa    xmm7, xmm4
    punpckldq xmm0, xmm2
    punpckldq xmm4, xmm6
    punpckhdq xmm3, xmm2
    punpckhdq xmm7, xmm6
    pshufhw   xmm0, xmm0, 0x1b
    pshuflw   xmm4, xmm4, 0x1b
    pshufhw   xmm3, xmm3, 0x1b
    pshuflw   xmm7, xmm7, 0x1b

    movlps [r0+2*10], xmm0
    movhps [r0+2*17], xmm0
    movlps [r0+2*21], xmm3
    movlps [r0+2*28], xmm4
    movhps [r0+2*32], xmm3
    movhps [r0+2*39], xmm4
    movlps [r0+2*43], xmm7
    movhps [r0+2*50], xmm7

    RET
%endmacro

INIT_XMM
%define PALIGNR PALIGNR_MMX
SCAN_8x8 sse2
%define PALIGNR PALIGNR_SSSE3
SCAN_8x8 ssse3

;-----------------------------------------------------------------------------
; void x264_zigzag_scan_8x8_frame_mmxext( int16_t level[64], int16_t dct[8][8] )
;-----------------------------------------------------------------------------
cglobal x264_zigzag_scan_8x8_frame_mmxext, 2,2
    movq       mm0, [r1]
    movq       mm1, [r1+2*8]
    movq       mm2, [r1+2*14]
    movq       mm3, [r1+2*21]
    movq       mm4, [r1+2*28]
    movq       mm5, mm0
    movq       mm6, mm1
    psrlq      mm0, 16
    punpckldq  mm1, mm1
    punpcklwd  mm5, mm6
    punpckhwd  mm1, mm3
    punpckhwd  mm6, mm0
    punpckldq  mm5, mm0
    movq       mm7, [r1+2*52]
    movq       mm0, [r1+2*60]
    punpckhwd  mm1, mm2
    punpcklwd  mm2, mm4
    punpckhwd  mm4, mm3
    punpckldq  mm3, mm3
    punpckhwd  mm3, mm2
    movq      [r0], mm5
    movq  [r0+2*4], mm1
    movq  [r0+2*8], mm6
    punpcklwd  mm6, mm0
    punpcklwd  mm6, mm7
    movq       mm1, [r1+2*32]
    movq       mm5, [r1+2*39]
    movq       mm2, [r1+2*46]
    movq [r0+2*35], mm3
    movq [r0+2*47], mm4
    punpckhwd  mm7, mm0
    psllq      mm0, 16
    movq       mm3, mm5
    punpcklwd  mm5, mm1
    punpckhwd  mm1, mm2
    punpckhdq  mm3, mm3
    movq [r0+2*52], mm6
    movq [r0+2*13], mm5
    movq       mm4, [r1+2*11]
    movq       mm6, [r1+2*25]
    punpcklwd  mm5, mm7
    punpcklwd  mm1, mm3
    punpckhdq  mm0, mm7
    movq       mm3, [r1+2*4]
    movq       mm7, [r1+2*18]
    punpcklwd  mm2, mm5
    movq [r0+2*25], mm1
    movq       mm1, mm4
    movq       mm5, mm6
    punpcklwd  mm4, mm3
    punpcklwd  mm6, mm7
    punpckhwd  mm1, mm3
    punpckhwd  mm5, mm7
    movq       mm3, mm6
    movq       mm7, mm5
    punpckldq  mm6, mm4
    punpckldq  mm5, mm1
    punpckhdq  mm3, mm4
    punpckhdq  mm7, mm1
    movq       mm4, [r1+2*35]
    movq       mm1, [r1+2*49]
    pshufw     mm6, mm6, 0x1b
    pshufw     mm5, mm5, 0x1b
    movq [r0+2*60], mm0
    movq [r0+2*56], mm2
    movq       mm0, [r1+2*42]
    movq       mm2, [r1+2*56]
    movq [r0+2*17], mm3
    movq [r0+2*32], mm7
    movq [r0+2*10], mm6
    movq [r0+2*21], mm5
    movq       mm3, mm0
    movq       mm7, mm2
    punpcklwd  mm0, mm4
    punpcklwd  mm2, mm1
    punpckhwd  mm3, mm4
    punpckhwd  mm7, mm1
    movq       mm4, mm2
    movq       mm1, mm7
    punpckhdq  mm2, mm0
    punpckhdq  mm7, mm3
    punpckldq  mm4, mm0
    punpckldq  mm1, mm3
    pshufw     mm2, mm2, 0x1b
    pshufw     mm7, mm7, 0x1b
    movq [r0+2*28], mm4
    movq [r0+2*43], mm1
    movq [r0+2*39], mm2
    movq [r0+2*50], mm7
    RET

;-----------------------------------------------------------------------------
; void x264_zigzag_scan_4x4_frame_mmx( int16_t level[16], int16_t dct[4][4] )
;-----------------------------------------------------------------------------
cglobal x264_zigzag_scan_4x4_frame_mmx, 2,2
    movq       mm0, [r1]
    movq       mm1, [r1+8]
    movq       mm2, [r1+16]
    movq       mm3, [r1+24]
    movq       mm4, mm0
    movq       mm5, mm1
    movq       mm6, mm2
    movq       mm7, mm3
    psllq      mm3, 16
    psrlq      mm0, 16
    punpckldq  mm2, mm2
    punpckhdq  mm1, mm1
    punpcklwd  mm4, mm5
    punpcklwd  mm5, mm3
    punpckldq  mm4, mm0
    punpckhwd  mm5, mm2
    punpckhwd  mm0, mm6
    punpckhwd  mm6, mm7
    punpcklwd  mm1, mm0
    punpckhdq  mm3, mm6
    movq      [r0], mm4
    movq    [r0+8], mm5
    movq   [r0+16], mm1
    movq   [r0+24], mm3
    RET

;-----------------------------------------------------------------------------
; void x264_zigzag_scan_4x4_frame_ssse3( int16_t level[16], int16_t dct[4][4] )
;-----------------------------------------------------------------------------
cglobal x264_zigzag_scan_4x4_frame_ssse3, 2,2
    movdqa    xmm1, [r1+16]
    movdqa    xmm0, [r1]
    pshufb    xmm1, [pb_scan4frameb GLOBAL]
    pshufb    xmm0, [pb_scan4framea GLOBAL]
    movdqa    xmm2, xmm1
    psrldq    xmm1, 6
    palignr   xmm2, xmm0, 6
    pslldq    xmm0, 10
    palignr   xmm1, xmm0, 10
    movdqa    [r0], xmm2
    movdqa [r0+16], xmm1
    RET

;-----------------------------------------------------------------------------
; void x264_zigzag_scan_4x4_field_mmxext( int16_t level[16], int16_t dct[4][4] )
;-----------------------------------------------------------------------------
; sse2 is only 1 cycle faster, and ssse3/pshufb is slower on core2
cglobal x264_zigzag_scan_4x4_field_mmxext, 2,3
    pshufw     mm0, [r1+4], 0xd2
    movq       mm1, [r1+16]
    movq       mm2, [r1+24]
    movq    [r0+4], mm0
    movq   [r0+16], mm1
    movq   [r0+24], mm2
    mov        r2d, [r1]
    mov       [r0], r2d
    mov        r2d, [r1+12]
    mov    [r0+12], r2d
    RET

;-----------------------------------------------------------------------------
; void x264_zigzag_sub_4x4_frame_ssse3( int16_t level[16], const uint8_t *src, uint8_t *dst )
;-----------------------------------------------------------------------------
cglobal x264_zigzag_sub_4x4_frame_ssse3, 3,3,8
    movd      xmm0, [r1+0*FENC_STRIDE]
    movd      xmm1, [r1+1*FENC_STRIDE]
    movd      xmm2, [r1+2*FENC_STRIDE]
    movd      xmm3, [r1+3*FENC_STRIDE]
    movd      xmm4, [r2+0*FDEC_STRIDE]
    movd      xmm5, [r2+1*FDEC_STRIDE]
    movd      xmm6, [r2+2*FDEC_STRIDE]
    movd      xmm7, [r2+3*FDEC_STRIDE]
    movd      [r2+0*FDEC_STRIDE], xmm0
    movd      [r2+1*FDEC_STRIDE], xmm1
    movd      [r2+2*FDEC_STRIDE], xmm2
    movd      [r2+3*FDEC_STRIDE], xmm3
    punpckldq xmm0, xmm1
    punpckldq xmm2, xmm3
    punpckldq xmm4, xmm5
    punpckldq xmm6, xmm7
    punpcklqdq xmm0, xmm2
    punpcklqdq xmm4, xmm6
    movdqa    xmm7, [pb_sub4frame GLOBAL]
    pshufb    xmm0, xmm7
    pshufb    xmm4, xmm7
    pxor      xmm6, xmm6
    movdqa    xmm1, xmm0
    movdqa    xmm5, xmm4
    punpcklbw xmm0, xmm6
    punpckhbw xmm1, xmm6
    punpcklbw xmm4, xmm6
    punpckhbw xmm5, xmm6
    psubw     xmm0, xmm4
    psubw     xmm1, xmm5
    movdqa    [r0], xmm0
    movdqa [r0+16], xmm1
    RET

;-----------------------------------------------------------------------------
; void x264_zigzag_interleave_8x8_cavlc_mmx( int16_t *dst, int16_t *src, uint8_t *nnz )
;-----------------------------------------------------------------------------

%macro INTERLEAVE 1
    movq   m0, [r1+%1*4+ 0]
    movq   m1, [r1+%1*4+ 8]
    movq   m2, [r1+%1*4+16]
    movq   m3, [r1+%1*4+24]
    TRANSPOSE4x4W 0,1,2,3,4
    movq   [r0+%1+ 0], m0
    movq   [r0+%1+32], m1
    movq   [r0+%1+64], m2
    movq   [r0+%1+96], m3
%if %1
    packsswb m0, m1
    por    m6, m2
    por    m7, m3
    por    m5, m0
%else
    packsswb m0, m1
    SWAP   m5, m0
    SWAP   m6, m2
    SWAP   m7, m3
%endif
%endmacro

INIT_MMX
cglobal x264_zigzag_interleave_8x8_cavlc_mmx, 3,3
    INTERLEAVE  0
    INTERLEAVE  8
    INTERLEAVE 16
    INTERLEAVE 24
    packsswb m6, m7
    packsswb m5, m6
    packsswb m5, m5
    pxor     m0, m0
    pcmpeqb  m5, m0
    paddb    m5, [pb_1 GLOBAL]
    movd    r0d, m5
    mov  [r2+0], r0w
    shr     r0d, 16
    mov  [r2+8], r0w
    RET

%macro INTERLEAVE_XMM 1
    mova   m0, [r1+%1*4+ 0]
    mova   m1, [r1+%1*4+16]
    mova   m4, [r1+%1*4+32]
    mova   m5, [r1+%1*4+48]
    SBUTTERFLY wd, 0, 1, 6
    SBUTTERFLY wd, 4, 5, 7
    SBUTTERFLY wd, 0, 1, 6
    SBUTTERFLY wd, 4, 5, 7
    movq   [r0+%1+  0], m0
    movhps [r0+%1+ 32], m0
    movq   [r0+%1+ 64], m1
    movhps [r0+%1+ 96], m1
    movq   [r0+%1+  8], m4
    movhps [r0+%1+ 40], m4
    movq   [r0+%1+ 72], m5
    movhps [r0+%1+104], m5
%if %1
    por    m2, m0
    por    m3, m1
    por    m2, m4
    por    m3, m5
%else
    SWAP 0,2
    SWAP 3,1
    por    m2, m4
    por    m3, m5
%endif
%endmacro

INIT_XMM
cglobal x264_zigzag_interleave_8x8_cavlc_sse2, 3,3,8
    INTERLEAVE_XMM  0
    INTERLEAVE_XMM 16
    packsswb m2, m3
    pxor     m5, m5
    packsswb m2, m2
    packsswb m2, m2
    pcmpeqb  m5, m2
    paddb    m5, [pb_1 GLOBAL]
    movd    r0d, m5
    mov  [r2+0], r0w
    shr     r0d, 16
    mov  [r2+8], r0w
    RET