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godot/thirdparty/libtheora/x86_vc/mmxfdct.c
Rémi Verschelde 5bc2cf257b Convert DOS line endings to Unix line endings 
Should fix issues some of us have with `misc/dist/uwp_template/AppxManifest.xml`
always showing up as modified.
Might cause issues on Windows due to the removal of BOMs or change of line endings
in some of the Mono, UWP or gradlew.bat files, we will test and adapt if need be.
2017-11-05 11:37:59 +01:00

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18 KiB
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/********************************************************************
* *
* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE Theora SOURCE CODE IS COPYRIGHT (C) 1999-2006 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************/
/*MMX fDCT implementation for x86_32*/
/*$Id: fdct_ses2.c 14579 2008-03-12 06:42:40Z xiphmont $*/
#include "x86enc.h"
#if defined(OC_X86_ASM)
#define OC_FDCT_STAGE1_8x4 __asm{ \
/*Stage 1:*/ \
/*mm0=t7'=t0-t7*/ \
__asm psubw mm0,mm7 \
__asm paddw mm7,mm7 \
/*mm1=t6'=t1-t6*/ \
__asm psubw mm1, mm6 \
__asm paddw mm6,mm6 \
/*mm2=t5'=t2-t5*/ \
__asm psubw mm2,mm5 \
__asm paddw mm5,mm5 \
/*mm3=t4'=t3-t4*/ \
__asm psubw mm3,mm4 \
__asm paddw mm4,mm4 \
/*mm7=t0'=t0+t7*/ \
__asm paddw mm7,mm0 \
/*mm6=t1'=t1+t6*/ \
__asm paddw mm6,mm1 \
/*mm5=t2'=t2+t5*/ \
__asm paddw mm5,mm2 \
/*mm4=t3'=t3+t4*/ \
__asm paddw mm4,mm3\
}
#define OC_FDCT8x4(_r0,_r1,_r2,_r3,_r4,_r5,_r6,_r7) __asm{ \
/*Stage 2:*/ \
/*mm7=t3''=t0'-t3'*/ \
__asm psubw mm7,mm4 \
__asm paddw mm4,mm4 \
/*mm6=t2''=t1'-t2'*/ \
__asm psubw mm6,mm5 \
__asm movq [Y+_r6],mm7 \
__asm paddw mm5,mm5 \
/*mm1=t5''=t6'-t5'*/ \
__asm psubw mm1,mm2 \
__asm movq [Y+_r2],mm6 \
/*mm4=t0''=t0'+t3'*/ \
__asm paddw mm4,mm7 \
__asm paddw mm2,mm2 \
/*mm5=t1''=t1'+t2'*/ \
__asm movq [Y+_r0],mm4 \
__asm paddw mm5,mm6 \
/*mm2=t6''=t6'+t5'*/ \
__asm paddw mm2,mm1 \
__asm movq [Y+_r4],mm5 \
/*mm0=t7', mm1=t5'', mm2=t6'', mm3=t4'.*/ \
/*mm4, mm5, mm6, mm7 are free.*/ \
/*Stage 3:*/ \
/*mm6={2}x4, mm7={27146,0xB500>>1}x2*/ \
__asm mov A,0x5A806A0A \
__asm pcmpeqb mm6,mm6 \
__asm movd mm7,A \
__asm psrlw mm6,15 \
__asm punpckldq mm7,mm7 \
__asm paddw mm6,mm6 \
/*mm0=0, m2={-1}x4 \
mm5:mm4=t5''*27146+0xB500*/ \
__asm movq mm4,mm1 \
__asm movq mm5,mm1 \
__asm punpcklwd mm4,mm6 \
__asm movq [Y+_r3],mm2 \
__asm pmaddwd mm4,mm7 \
__asm movq [Y+_r7],mm0 \
__asm punpckhwd mm5,mm6 \
__asm pxor mm0,mm0 \
__asm pmaddwd mm5,mm7 \
__asm pcmpeqb mm2,mm2 \
/*mm2=t6'', mm1=t5''+(t5''!=0) \
mm4=(t5''*27146+0xB500>>16)*/ \
__asm pcmpeqw mm0,mm1 \
__asm psrad mm4,16 \
__asm psubw mm0,mm2 \
__asm movq mm2, [Y+_r3] \
__asm psrad mm5,16 \
__asm paddw mm1,mm0 \
__asm packssdw mm4,mm5 \
/*mm4=s=(t5''*27146+0xB500>>16)+t5''+(t5''!=0)>>1*/ \
__asm paddw mm4,mm1 \
__asm movq mm0, [Y+_r7] \
__asm psraw mm4,1 \
__asm movq mm1,mm3 \
/*mm3=t4''=t4'+s*/ \
__asm paddw mm3,mm4 \
/*mm1=t5'''=t4'-s*/ \
__asm psubw mm1,mm4 \
/*mm1=0, mm3={-1}x4 \
mm5:mm4=t6''*27146+0xB500*/ \
__asm movq mm4,mm2 \
__asm movq mm5,mm2 \
__asm punpcklwd mm4,mm6 \
__asm movq [Y+_r5],mm1 \
__asm pmaddwd mm4,mm7 \
__asm movq [Y+_r1],mm3 \
__asm punpckhwd mm5,mm6 \
__asm pxor mm1,mm1 \
__asm pmaddwd mm5,mm7 \
__asm pcmpeqb mm3,mm3 \
/*mm2=t6''+(t6''!=0), mm4=(t6''*27146+0xB500>>16)*/ \
__asm psrad mm4,16 \
__asm pcmpeqw mm1,mm2 \
__asm psrad mm5,16 \
__asm psubw mm1,mm3 \
__asm packssdw mm4,mm5 \
__asm paddw mm2,mm1 \
/*mm1=t1'' \
mm4=s=(t6''*27146+0xB500>>16)+t6''+(t6''!=0)>>1*/ \
__asm paddw mm4,mm2 \
__asm movq mm1,[Y+_r4] \
__asm psraw mm4,1 \
__asm movq mm2,mm0 \
/*mm7={54491-0x7FFF,0x7FFF}x2 \
mm0=t7''=t7'+s*/ \
__asm paddw mm0,mm4 \
/*mm2=t6'''=t7'-s*/ \
__asm psubw mm2,mm4 \
/*Stage 4:*/ \
/*mm0=0, mm2=t0'' \
mm5:mm4=t1''*27146+0xB500*/ \
__asm movq mm4,mm1 \
__asm movq mm5,mm1 \
__asm punpcklwd mm4,mm6 \
__asm movq [Y+_r3],mm2 \
__asm pmaddwd mm4,mm7 \
__asm movq mm2,[Y+_r0] \
__asm punpckhwd mm5,mm6 \
__asm movq [Y+_r7],mm0 \
__asm pmaddwd mm5,mm7 \
__asm pxor mm0,mm0 \
/*mm7={27146,0x4000>>1}x2 \
mm0=s=(t1''*27146+0xB500>>16)+t1''+(t1''!=0)*/ \
__asm psrad mm4,16 \
__asm mov A,0x20006A0A \
__asm pcmpeqw mm0,mm1 \
__asm movd mm7,A \
__asm psrad mm5,16 \
__asm psubw mm0,mm3 \
__asm packssdw mm4,mm5 \
__asm paddw mm0,mm1 \
__asm punpckldq mm7,mm7 \
__asm paddw mm0,mm4 \
/*mm6={0x00000E3D}x2 \
mm1=-(t0''==0), mm5:mm4=t0''*27146+0x4000*/ \
__asm movq mm4,mm2 \
__asm movq mm5,mm2 \
__asm punpcklwd mm4,mm6 \
__asm mov A,0x0E3D \
__asm pmaddwd mm4,mm7 \
__asm punpckhwd mm5,mm6 \
__asm movd mm6,A \
__asm pmaddwd mm5,mm7 \
__asm pxor mm1,mm1 \
__asm punpckldq mm6,mm6 \
__asm pcmpeqw mm1,mm2 \
/*mm4=r=(t0''*27146+0x4000>>16)+t0''+(t0''!=0)*/ \
__asm psrad mm4,16 \
__asm psubw mm1,mm3 \
__asm psrad mm5,16 \
__asm paddw mm2,mm1 \
__asm packssdw mm4,mm5 \
__asm movq mm1,[Y+_r5] \
__asm paddw mm4,mm2 \
/*mm2=t6'', mm0=_y[0]=u=r+s>>1 \
The naive implementation could cause overflow, so we use \
u=(r&s)+((r^s)>>1).*/ \
__asm movq mm2,[Y+_r3] \
__asm movq mm7,mm0 \
__asm pxor mm0,mm4 \
__asm pand mm7,mm4 \
__asm psraw mm0,1 \
__asm mov A,0x7FFF54DC \
__asm paddw mm0,mm7 \
__asm movd mm7,A \
/*mm7={54491-0x7FFF,0x7FFF}x2 \
mm4=_y[4]=v=r-u*/ \
__asm psubw mm4,mm0 \
__asm punpckldq mm7,mm7 \
__asm movq [Y+_r4],mm4 \
/*mm0=0, mm7={36410}x4 \
mm1=(t5'''!=0), mm5:mm4=54491*t5'''+0x0E3D*/ \
__asm movq mm4,mm1 \
__asm movq mm5,mm1 \
__asm punpcklwd mm4,mm1 \
__asm mov A,0x8E3A8E3A \
__asm pmaddwd mm4,mm7 \
__asm movq [Y+_r0],mm0 \
__asm punpckhwd mm5,mm1 \
__asm pxor mm0,mm0 \
__asm pmaddwd mm5,mm7 \
__asm pcmpeqw mm1,mm0 \
__asm movd mm7,A \
__asm psubw mm1,mm3 \
__asm punpckldq mm7,mm7 \
__asm paddd mm4,mm6 \
__asm paddd mm5,mm6 \
/*mm0=0 \
mm3:mm1=36410*t6'''+((t5'''!=0)<<16)*/ \
__asm movq mm6,mm2 \
__asm movq mm3,mm2 \
__asm pmulhw mm6,mm7 \
__asm paddw mm1,mm2 \
__asm pmullw mm3,mm7 \
__asm pxor mm0,mm0 \
__asm paddw mm6,mm1 \
__asm movq mm1,mm3 \
__asm punpckhwd mm3,mm6 \
__asm punpcklwd mm1,mm6 \
/*mm3={-1}x4, mm6={1}x4 \
mm4=_y[5]=u=(54491*t5'''+36410*t6'''+0x0E3D>>16)+(t5'''!=0)*/ \
__asm paddd mm5,mm3 \
__asm paddd mm4,mm1 \
__asm psrad mm5,16 \
__asm pxor mm6,mm6 \
__asm psrad mm4,16 \
__asm pcmpeqb mm3,mm3 \
__asm packssdw mm4,mm5 \
__asm psubw mm6,mm3 \
/*mm1=t7'', mm7={26568,0x3400}x2 \
mm2=s=t6'''-(36410*u>>16)*/ \
__asm movq mm1,mm4 \
__asm mov A,0x340067C8 \
__asm pmulhw mm4,mm7 \
__asm movd mm7,A \
__asm movq [Y+_r5],mm1 \
__asm punpckldq mm7,mm7 \
__asm paddw mm4,mm1 \
__asm movq mm1,[Y+_r7] \
__asm psubw mm2,mm4 \
/*mm6={0x00007B1B}x2 \
mm0=(s!=0), mm5:mm4=s*26568+0x3400*/ \
__asm movq mm4,mm2 \
__asm movq mm5,mm2 \
__asm punpcklwd mm4,mm6 \
__asm pcmpeqw mm0,mm2 \
__asm pmaddwd mm4,mm7 \
__asm mov A,0x7B1B \
__asm punpckhwd mm5,mm6 \
__asm movd mm6,A \
__asm pmaddwd mm5,mm7 \
__asm psubw mm0,mm3 \
__asm punpckldq mm6,mm6 \
/*mm7={64277-0x7FFF,0x7FFF}x2 \
mm2=_y[3]=v=(s*26568+0x3400>>17)+s+(s!=0)*/ \
__asm psrad mm4,17 \
__asm paddw mm2,mm0 \
__asm psrad mm5,17 \
__asm mov A,0x7FFF7B16 \
__asm packssdw mm4,mm5 \
__asm movd mm7,A \
__asm paddw mm2,mm4 \
__asm punpckldq mm7,mm7 \
/*mm0=0, mm7={12785}x4 \
mm1=(t7''!=0), mm2=t4'', mm5:mm4=64277*t7''+0x7B1B*/ \
__asm movq mm4,mm1 \
__asm movq mm5,mm1 \
__asm movq [Y+_r3],mm2 \
__asm punpcklwd mm4,mm1 \
__asm movq mm2,[Y+_r1] \
__asm pmaddwd mm4,mm7 \
__asm mov A,0x31F131F1 \
__asm punpckhwd mm5,mm1 \
__asm pxor mm0,mm0 \
__asm pmaddwd mm5,mm7 \
__asm pcmpeqw mm1,mm0 \
__asm movd mm7,A \
__asm psubw mm1,mm3 \
__asm punpckldq mm7,mm7 \
__asm paddd mm4,mm6 \
__asm paddd mm5,mm6 \
/*mm3:mm1=12785*t4'''+((t7''!=0)<<16)*/ \
__asm movq mm6,mm2 \
__asm movq mm3,mm2 \
__asm pmulhw mm6,mm7 \
__asm pmullw mm3,mm7 \
__asm paddw mm6,mm1 \
__asm movq mm1,mm3 \
__asm punpckhwd mm3,mm6 \
__asm punpcklwd mm1,mm6 \
/*mm3={-1}x4, mm6={1}x4 \
mm4=_y[1]=u=(12785*t4'''+64277*t7''+0x7B1B>>16)+(t7''!=0)*/ \
__asm paddd mm5,mm3 \
__asm paddd mm4,mm1 \
__asm psrad mm5,16 \
__asm pxor mm6,mm6 \
__asm psrad mm4,16 \
__asm pcmpeqb mm3,mm3 \
__asm packssdw mm4,mm5 \
__asm psubw mm6,mm3 \
/*mm1=t3'', mm7={20539,0x3000}x2 \
mm4=s=(12785*u>>16)-t4''*/ \
__asm movq [Y+_r1],mm4 \
__asm pmulhw mm4,mm7 \
__asm mov A,0x3000503B \
__asm movq mm1,[Y+_r6] \
__asm movd mm7,A \
__asm psubw mm4,mm2 \
__asm punpckldq mm7,mm7 \
/*mm6={0x00006CB7}x2 \
mm0=(s!=0), mm5:mm4=s*20539+0x3000*/ \
__asm movq mm5,mm4 \
__asm movq mm2,mm4 \
__asm punpcklwd mm4,mm6 \
__asm pcmpeqw mm0,mm2 \
__asm pmaddwd mm4,mm7 \
__asm mov A,0x6CB7 \
__asm punpckhwd mm5,mm6 \
__asm movd mm6,A \
__asm pmaddwd mm5,mm7 \
__asm psubw mm0,mm3 \
__asm punpckldq mm6,mm6 \
/*mm7={60547-0x7FFF,0x7FFF}x2 \
mm2=_y[7]=v=(s*20539+0x3000>>20)+s+(s!=0)*/ \
__asm psrad mm4,20 \
__asm paddw mm2,mm0 \
__asm psrad mm5,20 \
__asm mov A,0x7FFF6C84 \
__asm packssdw mm4,mm5 \
__asm movd mm7,A \
__asm paddw mm2,mm4 \
__asm punpckldq mm7,mm7 \
/*mm0=0, mm7={25080}x4 \
mm2=t2'', mm5:mm4=60547*t3''+0x6CB7*/ \
__asm movq mm4,mm1 \
__asm movq mm5,mm1 \
__asm movq [Y+_r7],mm2 \
__asm punpcklwd mm4,mm1 \
__asm movq mm2,[Y+_r2] \
__asm pmaddwd mm4,mm7 \
__asm mov A,0x61F861F8 \
__asm punpckhwd mm5,mm1 \
__asm pxor mm0,mm0 \
__asm pmaddwd mm5,mm7 \
__asm movd mm7,A \
__asm pcmpeqw mm1,mm0 \
__asm psubw mm1,mm3 \
__asm punpckldq mm7,mm7 \
__asm paddd mm4,mm6 \
__asm paddd mm5,mm6 \
/*mm3:mm1=25080*t2''+((t3''!=0)<<16)*/ \
__asm movq mm6,mm2 \
__asm movq mm3,mm2 \
__asm pmulhw mm6,mm7 \
__asm pmullw mm3,mm7 \
__asm paddw mm6,mm1 \
__asm movq mm1,mm3 \
__asm punpckhwd mm3,mm6 \
__asm punpcklwd mm1,mm6 \
/*mm1={-1}x4 \
mm4=u=(25080*t2''+60547*t3''+0x6CB7>>16)+(t3''!=0)*/ \
__asm paddd mm5,mm3 \
__asm paddd mm4,mm1 \
__asm psrad mm5,16 \
__asm mov A,0x28005460 \
__asm psrad mm4,16 \
__asm pcmpeqb mm1,mm1 \
__asm packssdw mm4,mm5 \
/*mm5={1}x4, mm6=_y[2]=u, mm7={21600,0x2800}x2 \
mm4=s=(25080*u>>16)-t2''*/ \
__asm movq mm6,mm4 \
__asm pmulhw mm4,mm7 \
__asm pxor mm5,mm5 \
__asm movd mm7,A \
__asm psubw mm5,mm1 \
__asm punpckldq mm7,mm7 \
__asm psubw mm4,mm2 \
/*mm2=s+(s!=0) \
mm4:mm3=s*21600+0x2800*/ \
__asm movq mm3,mm4 \
__asm movq mm2,mm4 \
__asm punpckhwd mm4,mm5 \
__asm pcmpeqw mm0,mm2 \
__asm pmaddwd mm4,mm7 \
__asm psubw mm0,mm1 \
__asm punpcklwd mm3,mm5 \
__asm paddw mm2,mm0 \
__asm pmaddwd mm3,mm7 \
/*mm0=_y[4], mm1=_y[7], mm4=_y[0], mm5=_y[5] \
mm3=_y[6]=v=(s*21600+0x2800>>18)+s+(s!=0)*/ \
__asm movq mm0,[Y+_r4] \
__asm psrad mm4,18 \
__asm movq mm5,[Y+_r5] \
__asm psrad mm3,18 \
__asm movq mm1,[Y+_r7] \
__asm packssdw mm3,mm4 \
__asm movq mm4,[Y+_r0] \
__asm paddw mm3,mm2 \
}
/*On input, mm4=_y[0], mm6=_y[2], mm0=_y[4], mm5=_y[5], mm3=_y[6], mm1=_y[7].
On output, {_y[4],mm1,mm2,mm3} contains the transpose of _y[4...7] and
{mm4,mm5,mm6,mm7} contains the transpose of _y[0...3].*/
#define OC_TRANSPOSE8x4(_r0,_r1,_r2,_r3,_r4,_r5,_r6,_r7) __asm{ \
/*First 4x4 transpose:*/ \
/*mm0 = e3 e2 e1 e0 \
mm5 = f3 f2 f1 f0 \
mm3 = g3 g2 g1 g0 \
mm1 = h3 h2 h1 h0*/ \
__asm movq mm2,mm0 \
__asm punpcklwd mm0,mm5 \
__asm punpckhwd mm2,mm5 \
__asm movq mm5,mm3 \
__asm punpcklwd mm3,mm1 \
__asm punpckhwd mm5,mm1 \
/*mm0 = f1 e1 f0 e0 \
mm2 = f3 e3 f2 e2 \
mm3 = h1 g1 h0 g0 \
mm5 = h3 g3 h2 g2*/ \
__asm movq mm1,mm0 \
__asm punpckldq mm0,mm3 \
__asm movq [Y+_r4],mm0 \
__asm punpckhdq mm1,mm3 \
__asm movq mm0,[Y+_r1] \
__asm movq mm3,mm2 \
__asm punpckldq mm2,mm5 \
__asm punpckhdq mm3,mm5 \
__asm movq mm5,[Y+_r3] \
/*_y[4] = h0 g0 f0 e0 \
mm1 = h1 g1 f1 e1 \
mm2 = h2 g2 f2 e2 \
mm3 = h3 g3 f3 e3*/ \
/*Second 4x4 transpose:*/ \
/*mm4 = a3 a2 a1 a0 \
mm0 = b3 b2 b1 b0 \
mm6 = c3 c2 c1 c0 \
mm5 = d3 d2 d1 d0*/ \
__asm movq mm7,mm4 \
__asm punpcklwd mm4,mm0 \
__asm punpckhwd mm7,mm0 \
__asm movq mm0,mm6 \
__asm punpcklwd mm6,mm5 \
__asm punpckhwd mm0,mm5 \
/*mm4 = b1 a1 b0 a0 \
mm7 = b3 a3 b2 a2 \
mm6 = d1 c1 d0 c0 \
mm0 = d3 c3 d2 c2*/ \
__asm movq mm5,mm4 \
__asm punpckldq mm4,mm6 \
__asm punpckhdq mm5,mm6 \
__asm movq mm6,mm7 \
__asm punpckhdq mm7,mm0 \
__asm punpckldq mm6,mm0 \
/*mm4 = d0 c0 b0 a0 \
mm5 = d1 c1 b1 a1 \
mm6 = d2 c2 b2 a2 \
mm7 = d3 c3 b3 a3*/ \
}
/*MMX implementation of the fDCT.*/
void oc_enc_fdct8x8_mmx(ogg_int16_t _y[64],const ogg_int16_t _x[64]){
ptrdiff_t a;
__asm{
#define Y eax
#define A ecx
#define X edx
/*Add two extra bits of working precision to improve accuracy; any more and
we could overflow.*/
/*We also add biases to correct for some systematic error that remains in
the full fDCT->iDCT round trip.*/
mov X, _x
mov Y, _y
movq mm0,[0x00+X]
movq mm1,[0x10+X]
movq mm2,[0x20+X]
movq mm3,[0x30+X]
pcmpeqb mm4,mm4
pxor mm7,mm7
movq mm5,mm0
psllw mm0,2
pcmpeqw mm5,mm7
movq mm7,[0x70+X]
psllw mm1,2
psubw mm5,mm4
psllw mm2,2
mov A,1
pslld mm5,16
movd mm6,A
psllq mm5,16
mov A,0x10001
psllw mm3,2
movd mm4,A
punpckhwd mm5,mm6
psubw mm1,mm6
movq mm6,[0x60+X]
paddw mm0,mm5
movq mm5,[0x50+X]
paddw mm0,mm4
movq mm4,[0x40+X]
/*We inline stage1 of the transform here so we can get better instruction
scheduling with the shifts.*/
/*mm0=t7'=t0-t7*/
psllw mm7,2
psubw mm0,mm7
psllw mm6,2
paddw mm7,mm7
/*mm1=t6'=t1-t6*/
psllw mm5,2
psubw mm1,mm6
psllw mm4,2
paddw mm6,mm6
/*mm2=t5'=t2-t5*/
psubw mm2,mm5
paddw mm5,mm5
/*mm3=t4'=t3-t4*/
psubw mm3,mm4
paddw mm4,mm4
/*mm7=t0'=t0+t7*/
paddw mm7,mm0
/*mm6=t1'=t1+t6*/
paddw mm6,mm1
/*mm5=t2'=t2+t5*/
paddw mm5,mm2
/*mm4=t3'=t3+t4*/
paddw mm4,mm3
OC_FDCT8x4(0x00,0x10,0x20,0x30,0x40,0x50,0x60,0x70)
OC_TRANSPOSE8x4(0x00,0x10,0x20,0x30,0x40,0x50,0x60,0x70)
/*Swap out this 8x4 block for the next one.*/
movq mm0,[0x08+X]
movq [0x30+Y],mm7
movq mm7,[0x78+X]
movq [0x50+Y],mm1
movq mm1,[0x18+X]
movq [0x20+Y],mm6
movq mm6,[0x68+X]
movq [0x60+Y],mm2
movq mm2,[0x28+X]
movq [0x10+Y],mm5
movq mm5,[0x58+X]
movq [0x70+Y],mm3
movq mm3,[0x38+X]
/*And increase its working precision, too.*/
psllw mm0,2
movq [0x00+Y],mm4
psllw mm7,2
movq mm4,[0x48+X]
/*We inline stage1 of the transform here so we can get better instruction
scheduling with the shifts.*/
/*mm0=t7'=t0-t7*/
psubw mm0,mm7
psllw mm1,2
paddw mm7,mm7
psllw mm6,2
/*mm1=t6'=t1-t6*/
psubw mm1,mm6
psllw mm2,2
paddw mm6,mm6
psllw mm5,2
/*mm2=t5'=t2-t5*/
psubw mm2,mm5
psllw mm3,2
paddw mm5,mm5
psllw mm4,2
/*mm3=t4'=t3-t4*/
psubw mm3,mm4
paddw mm4,mm4
/*mm7=t0'=t0+t7*/
paddw mm7,mm0
/*mm6=t1'=t1+t6*/
paddw mm6,mm1
/*mm5=t2'=t2+t5*/
paddw mm5,mm2
/*mm4=t3'=t3+t4*/
paddw mm4,mm3
OC_FDCT8x4(0x08,0x18,0x28,0x38,0x48,0x58,0x68,0x78)
OC_TRANSPOSE8x4(0x08,0x18,0x28,0x38,0x48,0x58,0x68,0x78)
/*Here the first 4x4 block of output from the last transpose is the second
4x4 block of input for the next transform.
We have cleverly arranged that it already be in the appropriate place,
so we only have to do half the stores and loads.*/
movq mm0,[0x00+Y]
movq [0x58+Y],mm1
movq mm1,[0x10+Y]
movq [0x68+Y],mm2
movq mm2,[0x20+Y]
movq [0x78+Y],mm3
movq mm3,[0x30+Y]
OC_FDCT_STAGE1_8x4
OC_FDCT8x4(0x00,0x10,0x20,0x30,0x08,0x18,0x28,0x38)
OC_TRANSPOSE8x4(0x00,0x10,0x20,0x30,0x08,0x18,0x28,0x38)
/*mm0={-2}x4*/
pcmpeqw mm0,mm0
paddw mm0,mm0
/*Round the results.*/
psubw mm1,mm0
psubw mm2,mm0
psraw mm1,2
psubw mm3,mm0
movq [0x18+Y],mm1
psraw mm2,2
psubw mm4,mm0
movq mm1,[0x08+Y]
psraw mm3,2
psubw mm5,mm0
psraw mm4,2
psubw mm6,mm0
psraw mm5,2
psubw mm7,mm0
psraw mm6,2
psubw mm1,mm0
psraw mm7,2
movq mm0,[0x40+Y]
psraw mm1,2
movq [0x30+Y],mm7
movq mm7,[0x78+Y]
movq [0x08+Y],mm1
movq mm1,[0x50+Y]
movq [0x20+Y],mm6
movq mm6,[0x68+Y]
movq [0x28+Y],mm2
movq mm2,[0x60+Y]
movq [0x10+Y],mm5
movq mm5,[0x58+Y]
movq [0x38+Y],mm3
movq mm3,[0x70+Y]
movq [0x00+Y],mm4
movq mm4,[0x48+Y]
OC_FDCT_STAGE1_8x4
OC_FDCT8x4(0x40,0x50,0x60,0x70,0x48,0x58,0x68,0x78)
OC_TRANSPOSE8x4(0x40,0x50,0x60,0x70,0x48,0x58,0x68,0x78)
/*mm0={-2}x4*/
pcmpeqw mm0,mm0
paddw mm0,mm0
/*Round the results.*/
psubw mm1,mm0
psubw mm2,mm0
psraw mm1,2
psubw mm3,mm0
movq [0x58+Y],mm1
psraw mm2,2
psubw mm4,mm0
movq mm1,[0x48+Y]
psraw mm3,2
psubw mm5,mm0
movq [0x68+Y],mm2
psraw mm4,2
psubw mm6,mm0
movq [0x78+Y],mm3
psraw mm5,2
psubw mm7,mm0
movq [0x40+Y],mm4
psraw mm6,2
psubw mm1,mm0
movq [0x50+Y],mm5
psraw mm7,2
movq [0x60+Y],mm6
psraw mm1,2
movq [0x70+Y],mm7
movq [0x48+Y],mm1
#undef Y
#undef A
#undef X
}
}
#endif
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