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gps/GPSResources/tcpmp/common/blit/blit_arm_stretch.c

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/*****************************************************************************
*
* 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 02111-1307 USA
*
* $Id: blit_arm_stretch.c 543 2006-01-07 22:06:24Z picard $
*
* The Core Pocket Media Player
* Copyright (c) 2004-2005 Gabor Kovacs
*
****************************************************************************/
//todo: ReUse with OnlyDiff condition. optimize IncPtr (change to pre increment)
#include "../common.h"
#include "../dyncode/dyncode.h"
#include "blit_soft.h"
#if defined(ARM)
typedef struct stack
{
int InvertMask;
int DiffMask;
int PalPtr;
int EndOfLine;
int EndOfRect;
int DstPitch;
int DstNext;
int Y;
int U;
int V;
int Pos;
int SaveR7; //onlydifference && dither
int SaveR8; //onlydifference && dither
int StackFrame[STACKFRAME];
//void* this R0
//char* Dst R1
//char* Src R2
//int DstPitch R3
int SrcPitch;
int Width;
int Height;
int Src2SrcLast;
} stack;
// palette
//
// R0 result RGB
// R1..R3 R,G,B accumulator
// R4..R6 temporary
// R9 Dst
// R7 U+UVNextRow (when SwapXY)
// R8 V+UVNextRow (when SwapXY)
// R10 U
// R11 V
// R12 Y
// R14 Y+YNextRow (when SwapXY)
static NOINLINE void Inc_RGB_UV_Pixel(blit_soft* p, int dY, int dUV)
{
bool_t NextRow = (p->SwapXY) && (p->Upper == (p->DirX>0));
reg Y,V,U;
Y = (reg)(NextRow ? R14:R12);
V = (reg)(NextRow ? R8:R11);
U = (reg)(NextRow ? R7:R10);
if (dY) I2C(ADD,Y,Y,dY);
if (dUV) I2C(ADD,U,U,dUV);
if (dUV) I2C(ADD,V,V,dUV);
}
static NOINLINE void Add_RGB_UV_Pixel(blit_soft* p, int Amount, int dY, int dUV, bool_t IncPtr)
{
assert(Amount>0 || !IncPtr);
if (Amount)
{
int Load = IncPtr ? LDR_POST : LDR;
reg Y,V,U;
bool_t NextRow = (p->SwapXY) && (p->Upper == (p->DirX>0));
Y = (reg)(NextRow ? R14:R12);
V = (reg)(NextRow ? R8:R11);
U = (reg)(NextRow ? R7:R10);
if (p->DstPalette)
{
Byte(); I2C(Load,R4,Y,dY); //y
Byte(); I2C(Load,R6,V,dUV); //v
Byte(); I2C(Load,R5,U,dUV); //u
}
else
{
Byte(); I2C(Load,R4,Y,dY); //y
IConst(R5,(p->_YMul >> 8) * Amount);
Byte(); I2C(Load,R6,V,dUV); //v
I4(MLA,R1,R5,R4,R1);
I4(MLA,R2,R5,R4,R2);
I4(MLA,R3,R5,R4,R3);
Byte(); I2C(Load,R4,U,dUV); //u
IConst(R5,(p->_GVMul >> 8) * Amount);
I4(MLA,R2,R5,R6,R2);
IConst(R5,(p->_RVMul >> 8) * Amount);
I4(MLA,R1,R5,R6,R1);
IConst(R5,(p->_GUMul >> 8) * Amount);
I4(MLA,R2,R5,R4,R2);
IConst(R5,(p->_BUMul >> 8) * Amount);
I4(MLA,R3,R5,R4,R3);
}
}
}
static NOINLINE void Stretch_RGB_UV_Pixel(blit_soft* p, int Col, int dY, int dUV)
{
int SatBit = p->QAdd ? 32 : 24;
int RPos = p->DstPos[0];
int GPos = p->DstPos[1];
int BPos = p->DstPos[2];
if (p->Upper && p->DstBPP<=16)
{
RPos += p->DstBPP;
GPos += p->DstBPP;
BPos += p->DstBPP;
}
if (!p->DstPalette)
{
if (p->Dither)
{
IConst(R4,p->_RAdd);
IConst(R5,p->_GAdd);
IConst(R6,p->_BAdd);
I3S(ADD,R1,R4,R1,LSR,32-SatBit+p->DstSize[0]);
I3S(ADD,R2,R5,R2,LSR,32-SatBit+p->DstSize[1]);
I3S(ADD,R3,R6,R3,LSR,32-SatBit+p->DstSize[2]);
}
else
{
IConst(R1,p->_RAdd);
IConst(R2,p->_GAdd);
IConst(R3,p->_BAdd);
}
}
if (p->ArithStretch)
{
int x = Col * p->RScaleX;
Add_RGB_UV_Pixel(p,16*(16-(x & 15)),dY,dUV,!p->OnlyDiff);
if (!p->OnlyDiff)
{
dY = -dY;
dUV = -dUV;
}
++dY;
if (((x >> 4)&1) || p->SrcUVX2==0) //need UV increment?
++dUV;
Add_RGB_UV_Pixel(p,16*(x & 15),dY,dUV,0);
}
else
Add_RGB_UV_Pixel(p,256,dY,dUV,!p->OnlyDiff);
if (p->DstPalette)
{
if (p->Dither)
{
I3S(ADD,R1,R1,R4,ROR,0);
I3S(ADD,R2,R2,R5,ROR,0);
I3S(ADD,R2,R2,R6,ROR,16);
I2C(AND,R4,R1,0x1E0);
I2C(AND,R5,R2,0x1E0);
I2C(AND,R6,R2,0x1E00000);
I3S(ADD,R0,R3,R4,LSL,5);
I3S(ADD,R0,R0,R5,LSL,1);
I3S(ADD,R0,R0,R6,LSR,3+16);
Byte(); I2C(LDR,R4,R0,1);
Byte(); I2C(LDR,R5,R0,2);
Byte(); I2C(LDR,R6,R0,3);
Byte(); I2C(LDR,R0,R0,0);
I3S(SUB,R1,R1,R4,ROR,0);
I3S(SUB,R2,R2,R5,ROR,0);
I3S(SUB,R2,R2,R6,ROR,16);
}
else
{
I2C(AND,R4,R4,0x1E0);
I2C(AND,R5,R5,0x1E0);
I2C(AND,R6,R6,0x1E0);
I3S(ADD,R0,R3,R4,LSL,5);
I3S(ADD,R0,R0,R5,LSL,1);
I3S(ADD,R0,R0,R6,LSR,3);
Byte(); I2C(LDR,R0,R0,0);
}
p->Pos = 0;
}
else
{
if (p->QAdd)
{
I3(QDADD,R1,R1,R1);
I3(QDADD,R2,R2,R2);
I3(QDADD,R3,R3,R3);
}
else
{
I2C(TST,NONE,R1,0xFF000000);
C(NE);I2C(MVN,R1,NONE,0xFF000000);
C(MI);I2C(MOV,R1,NONE,0x00000000);
I2C(TST,NONE,R2,0xFF000000);
C(NE);I2C(MVN,R2,NONE,0xFF000000);
C(MI);I2C(MOV,R2,NONE,0x00000000);
I2C(TST,NONE,R3,0xFF000000);
C(NE);I2C(MVN,R3,NONE,0xFF000000);
C(MI);I2C(MOV,R3,NONE,0x00000000);
}
if (p->InvertMask && p->Pos<0)
{
p->Pos = RPos;
MB(); I2C(LDR,R0,SP,OFS(stack,InvertMask));
}
if (p->Pos!=RPos && p->Pos>=0) I3S(MOV,R0,NONE,R0,ROR,RPos-p->Pos);
I3S(p->Pos<0?MOV:EOR,R0,(reg)(p->Pos<0?NONE:R0),R1,LSR,SatBit-p->DstSize[0]);
I3S(MOV,R4,NONE,R2,LSR,SatBit-p->DstSize[1]);
I3S(MOV,R0,NONE,R0,ROR,BPos-RPos);
I3S(EOR,R0,R0,R4,ROR,BPos-GPos);
I3S(EOR,R0,R0,R3,LSR,SatBit-p->DstSize[2]);
p->Pos = BPos;
if (p->Dither)
{
MB(); I3S(MOV,R1,NONE,R1,LSL,32-SatBit+p->DstSize[0]);
MB(); I3S(MOV,R2,NONE,R2,LSL,32-SatBit+p->DstSize[1]);
MB(); I3S(MOV,R3,NONE,R3,LSL,32-SatBit+p->DstSize[2]);
}
}
}
void Stretch_RGB_UV(blit_soft* p)
{
bool_t Special;
dyninst* LoopX;
dyninst* LoopY;
dyninst* EndOfLine;
int i,Col,ColCount,RowStep;
int Mask = 0;
int Invert = 0;
bool_t ReUse;
bool_t NoInc;
bool_t RegDirty; //R4,R5
p->Dither = (boolmem_t)((p->DstBPP<=16) && (p->FX.Flags & BLITFX_DITHER)!=0);
p->DstStepX = p->DirX * ((p->DstBPP*2) >> 3);
p->PalPtr = NULL;
p->DiffMask = NULL;
p->InvertMask = NULL;
if (p->Dst.Flags & PF_INVERTED)
Invert = -1;
CodeBegin();
I2C(SUB,SP,SP,OFS(stack,StackFrame));
I2C(LDR,R9,R1,0); //Dst[0] RGB
I2C(LDR,R10,R2,4); //Src[1] U
I2C(LDR,R11,R2,8); //Src[2] V
I2C(LDR,R12,R2,0); //Src[0] Y
I2C(STR,R10,SP,OFS(stack,U));
I2C(STR,R11,SP,OFS(stack,V));
I2C(STR,R12,SP,OFS(stack,Y));
ReUse = p->RScaleX<16 && !Invert && !p->OnlyDiff && (!p->OnlyDiff || !p->SwapXY) && (!p->DstPalette || !p->SwapXY) && !p->ArithStretch; //R0 is saved in loop and not ArithStretch
if (p->QAdd && ReUse && !p->SwapXY)
{
p->QAdd = 0; // invert not supported with ReUse
CalcColor(p);
}
if (p->QAdd)
{
int Mask2,Shift,i;
for (i=0;i<3;++i)
Mask |= 1 << (p->DstPos[i] + p->DstSize[i] - 1);
Mask2 = Mask;
Shift = 0;
if (p->DstBPP <= 16)
{
if (p->DirX<0) Shift = p->DstBPP;
Mask2 |= Mask << p->DstBPP;
}
Invert ^= RotateRight(Mask2,Shift+p->DstPos[0]);
}
if (Invert)
{
p->InvertMask = InstCreate32(Invert,NONE,NONE,NONE,0,0);
MB(); I1P(LDR,R5,p->InvertMask,0);
I2C(STR,R5,SP,OFS(stack,InvertMask));
}
if (p->OnlyDiff)
{
p->DiffMask = InstCreate32(0xFCFCFCFC,NONE,NONE,NONE,0,0);
MB(); I1P(LDR,R4,p->DiffMask,0);
I2C(STR,R4,SP,OFS(stack,DiffMask));
}
I2C(STR,R3,SP,OFS(stack,DstPitch));
I3(MOV,R6,NONE,R3); //DstPitch
I2C(LDR,R7,SP,OFS(stack,SrcPitch));
I2C(LDR,R0,SP,OFS(stack,Height));
I2C(LDR,R4,SP,OFS(stack,Width));
if (p->DirX<0 && p->DstBPP==16) //adjust reversed destination for block size
I2C(SUB,R9,R9,-p->DstStepX-(p->DstBPP >> 3));
if ((p->DstPalette || p->DstBPP==32) && p->SwapXY)
I2C(ADD,R9,R9,p->DstStepX/2);
if (p->SwapXY)
{
I2C(MOV,R1,NONE,p->DstBPP * p->DirX);
I3(MUL,R0,R1,R0);
I3S(ADD,R0,R9,R0,ASR,3);
I2C(STR,R0,SP,OFS(stack,EndOfRect));
//DstNext = DstStepX - Width*DstPitch;
MB(); I3(MUL,R2,R6,R4);
I2C(MOV,R0,NONE,p->DstStepX);
I3(SUB,R0,R0,R2);
I2C(STR,R0,SP,OFS(stack,DstNext));
}
else
{
I3(MUL,R0,R6,R0); //DstPitch * Height
I3(ADD,R0,R9,R0);
I2C(STR,R0,SP,OFS(stack,EndOfRect));
//DstNext = DstPitch - DirX * Width << DstBPP2;
I3S(p->DirX>0?SUB:ADD,R2,R6,R4,LSL,p->DstBPP2);
I2C(STR,R2,SP,OFS(stack,DstNext));
}
if (p->Dst.Flags & PF_PALETTE)
{
p->PalPtr = InstCreate32((int)p->LookUp_Data,NONE,NONE,NONE,0,0);
MB(); I1P(LDR,R3,p->PalPtr,0);
if (p->Dither)
{
I2C(MOV,R1,NONE,0);
I2C(MOV,R2,NONE,0);
}
}
else
{
if (p->Dither)
{
I2C(MVN,R1,NONE,0x80000000);
I2C(MVN,R2,NONE,0x80000000);
I2C(MVN,R3,NONE,0x80000000);
}
}
I2C(MOV,R5,NONE,0); //Pos
LoopY = Label(0);
I0P(B,AL,LoopY);
if (p->InvertMask) InstPost(p->InvertMask);
if (p->DiffMask) InstPost(p->DiffMask);
if (p->PalPtr) InstPost(p->PalPtr);
ColCount = 32;
for (i=1;i<16 && !(p->RScaleX & i);i<<=1)
ColCount >>= 1;
InstPost(LoopY);
EndOfLine = Label(0);
//R4 Width
//R5 Pos
//R7 SrcPitch
if (p->SwapXY)
{
I3(MUL,R4,R6,R4); //R6=DstPitch
I3(ADD,R4,R9,R4);
}
else
{
if (p->DirX > 0)
I3S(ADD,R4,R9,R4,LSL,p->DstBPP2);
else
I3S(SUB,R4,R9,R4,LSL,p->DstBPP2);
}
I2C(STR,R4,SP,OFS(stack,EndOfLine));
if (p->SwapXY)
{
//we need next row in R14,R7,R8 (YUV)
IMul(R6,R5,p->RScaleY); //R6 = RScaleY*Pos
I2C(ADD,R8,R6,p->RScaleY);//R8 = RScaleY*(Pos+1)
// dY = ((RScaleY * (Pos+1)) >> 4) - ((RScaleY * Pos) >> 4);
I3S(MOV,R14,NONE,R8,LSR,4);
I3S(SUB,R14,R14,R6,LSR,4);
I3(MUL,R14,R7,R14);
// dUV = ((RScaleY * (Pos+1)) >> (4+SrcUVY2)) - ((RScaleY * Pos) >> (4+SrcUVY2));
I3S(MOV,R8,NONE,R8,LSR,4+p->SrcUVY2);
I3S(SUB,R8,R8,R6,LSR,4+p->SrcUVY2);
I3(MUL,R8,R7,R8);
I3(ADD,R14,R12,R14);
I3S(ADD,R7,R10,R8,ASR,p->SrcUVX2);
I3S(ADD,R8,R11,R8,ASR,p->SrcUVX2);
}
I2C(STR,R5,SP,OFS(stack,Pos));
// special case, when R7,R8 must be saved/restored and incremented separatly
Special = p->OnlyDiff && (p->Dither) && (p->SwapXY);
if (Special)
{
I2C(STR,R7,SP,OFS(stack,SaveR7));
I2C(STR,R8,SP,OFS(stack,SaveR8));
}
if (p->OnlyDiff)
{
MB(); I2C(LDR,R5,SP,OFS(stack,DiffMask));
MB(); I2C(LDR,R6,SP,OFS(stack,Src2SrcLast));
}
LoopX = Label(1);
RegDirty = 1;
NoInc = 0;
for (Col=0;Col<ColCount;)
{
int x = (Col * p->RScaleX) >> 4;
int IncY;
int IncUV;
int IncY2 = 0;
int IncUV2 = 0;
int Col1 = Col;
int Col2 = Col;
IncY = (((Col+1) * p->RScaleX) >> 4) - ((Col * p->RScaleX) >> 4);
IncUV = (((Col+1) * p->RScaleX) >> (4+p->SrcUVX2)) - ((Col * p->RScaleX) >> (4+p->SrcUVX2));
Col++;
if (!(p->SwapXY))
{
IncY2 = (((Col+1) * p->RScaleX) >> 4) - ((Col * p->RScaleX) >> 4);
IncUV2 = (((Col+1) * p->RScaleX) >> (4+p->SrcUVX2)) - ((Col * p->RScaleX) >> (4+p->SrcUVX2));
Col2++;
Col++;
}
else
if (!p->OnlyDiff)
{
IncY2 = IncY;
IncUV2 = IncUV;
}
if (p->OnlyDiff)
{
reg RC = (reg)(p->SwapXY ? R0 : R14);
reg RA = (reg)(p->Dither ? R7 : R1);
reg RB = (reg)(p->Dither ? R8 : R2);
RegDirty = 1;
p->Skip = Label(0);
//RC,RA,RB,R4 for temporary
//R5(DiffMask),R6(Src2SrcLast)
if (p->SwapXY)
{
Byte(); I3(LDR,RC,R12,R6);
Byte(); I2C(LDR_POST,RA,R12,IncY);
Byte(); I3(LDR,R4,R14,R6);
Byte(); I2C(LDR_POST,RB,R14,IncY);
IncY = IncY2 = -IncY;
}
else
{
Byte(); I3(LDR,RC,R12,R6);
Byte(); I2C(LDR_POST,RA,R12,IncY);
Byte(); I3(LDR,R4,R12,R6);
Byte(); I2C(LDR_POST,RB,R12,IncY2);
IncY = -IncY-IncY2;
IncY2 = -IncY2;
}
I3(EOR,RC,RC,RA);
S(); I3(TST,NONE,RC,R5);
I3(EOR,R4,R4,RB);
C(EQ); S(); I3(TST,NONE,R4,R5);
C(EQ); Byte(); I3(LDR,RC,R10,R6); //last u
Byte(); I2C(LDR_POST,RA,R10,IncUV+IncUV2); //u
C(EQ); Byte(); I3(LDR,R4,R11,R6); //last v
Byte(); I2C(LDR_POST,RB,R11,IncUV+IncUV2); //v
IncUV = -IncUV-IncUV2;
if (Special) //R7,R8 not incremented, using direct position
IncUV2 = x >> p->SrcUVX2;
else
if (p->SwapXY) //IncUV2 will increment R7,R8
{
I2C(ADD,R7,R7,-IncUV);
I2C(ADD,R8,R8,-IncUV);
IncUV2 = IncUV;
}
else
IncUV2 = -IncUV2;
C(EQ); I3(EOR,RC,RC,RA);
C(EQ); S(); I3(TST,NONE,RC,R5);
C(EQ); I3(EOR,R4,R4,RB);
C(EQ); S(); I3(TST,NONE,R4,R5);
C(EQ); I2C(LDR,R4,SP,OFS(stack,EndOfLine));
#ifdef SHOWDIFF
I2C(MVN,RC,NONE,0);
if (DstBPP==8) Half();
C(EQ); I2(STR,RC,R9);
#endif
if (p->SwapXY)
{
MB(); I2C(LDR,RC,SP,OFS(stack,DstPitch));
C(EQ); I3(ADD,R9,R9,RC);
}
else
{
C(EQ); I2C(ADD,R9,R9,p->DstStepX);
}
I0P(B,EQ,p->Skip);
if (Special)
{
I2C(LDR,R7,SP,OFS(stack,SaveR7));
I2C(LDR,R8,SP,OFS(stack,SaveR8));
}
}
p->Upper = p->DirX < 0;
if (ReUse && NoInc)
{
p->Pos = 0;
if (!p->SwapXY && p->DstBPP==16)
I3S(MOV,R0,NONE,R0,LSL,p->Upper?16:-16);
if (!p->OnlyDiff)
Inc_RGB_UV_Pixel(p, IncY, IncUV);
}
else
{
p->Pos = -1;
Stretch_RGB_UV_Pixel(p, Col1, IncY, IncUV);
RegDirty = 1;
}
if (!p->SwapXY)
NoInc = !IncY && !IncUV;
if (p->DstPalette)
Byte();
if (p->DstPalette || p->DstBPP==32)
{
if (p->DstBPP==32 && p->Pos)
I3S(MOV,R0,NONE,R0,ROR,-p->Pos);
if (p->SwapXY)
I2C(STR,R0,R9,-p->DstStepX/2);
else
I2C(STR_POST,R0,R9,p->DstStepX/2);
}
p->Upper = p->DirX > 0;
if (ReUse && NoInc)
{
if (!p->SwapXY && p->DstBPP==16)
I3S(ORR,R0,R0,R0,ROR,16);
if (!p->OnlyDiff)
Inc_RGB_UV_Pixel(p, IncY2, IncUV2);
}
else
{
if (p->DstBPP!=16)
p->Pos = -1;
Stretch_RGB_UV_Pixel(p, Col2, IncY2, IncUV2);
RegDirty = 1;
}
if (!p->SwapXY)
NoInc = !IncY2 && !IncUV2;
else
NoInc = !IncY && !IncUV;
if (p->Pos)
I3S(MOV,R0,NONE,R0,ROR,-p->Pos);
if (p->DstPalette || p->DstBPP==32)
{
if (p->SwapXY)
{
if (RegDirty) { MB(); I2C(LDR,R5,SP,OFS(stack,DstPitch)); }
if (p->DstPalette) Byte();
I3(STR_POST,R0,R9,R5);
}
else
{
if (p->DstPalette) Byte();
I2C(STR_POST,R0,R9,p->DstStepX/2);
}
}
else
{
if (p->SwapXY)
{
if (RegDirty) { MB(); I2C(LDR,R5,SP,OFS(stack,DstPitch)); }
I3(STR_POST,R0,R9,R5);
}
else
I2C(STR_POST,R0,R9,p->DstStepX);
}
if (RegDirty) { MB(); I2C(LDR,R4,SP,OFS(stack,EndOfLine)); }
RegDirty = 0;
if (p->OnlyDiff)
{
MB(); I2C(LDR,R5,SP,OFS(stack,DiffMask));
MB(); I2C(LDR,R6,SP,OFS(stack,Src2SrcLast));
InstPost(p->Skip);
}
I3(CMP,NONE,R9,R4);
if (Col == ColCount)
{
//last item in block
if (Special)
{
I2C(LDR,R7,SP,OFS(stack,SaveR7));
I2C(LDR,R8,SP,OFS(stack,SaveR8));
I2C(ADD,R7,R7,(p->RScaleX * ColCount) >> (4+p->SrcUVX2));
I2C(ADD,R8,R8,(p->RScaleX * ColCount) >> (4+p->SrcUVX2));
I2C(STR,R7,SP,OFS(stack,SaveR7));
I2C(STR,R8,SP,OFS(stack,SaveR8));
}
I0P(B,NE,LoopX);
}
else
I0P(B,EQ,EndOfLine);
}
InstPost(EndOfLine);
I2C(LDR,R6,SP,OFS(stack,DstNext));
I2C(LDR,R7,SP,OFS(stack,SrcPitch));
I2C(LDR,R5,SP,OFS(stack,Pos));
I2C(LDR,R12,SP,OFS(stack,Y));
I2C(LDR,R10,SP,OFS(stack,U));
I2C(LDR,R11,SP,OFS(stack,V));
I3(ADD,R9,R9,R6);
//increment row of Y,U,V according to Pos -> Pos+RowStep
RowStep = (p->SwapXY) ? 2:1;
//R4,R6,R8 for temporary
IMul(R6,R5,p->RScaleY); //R6 = RScaleY*Pos
I2C(ADD,R5,R5,RowStep);
IMul(R8,R5,p->RScaleY); //R8 = RScaleY*(Pos+RowStep)
// dY = ((RScaleY * (Pos+RowStep)) >> 4) - ((RScaleY * Pos) >> 4);
I3S(MOV,R4,NONE,R8,LSR,4);
I3S(SUB,R4,R4,R6,LSR,4);
I3(MUL,R4,R7,R4);
// dUV = ((RScaleY * (Pos+RowStep)) >> (4+SrcUVY2)) - ((RScaleY * Pos) >> (4+SrcUVY2));
I3S(MOV,R8,NONE,R8,LSR,4+p->SrcUVY2);
I3S(SUB,R8,R8,R6,LSR,4+p->SrcUVY2);
I3(MUL,R8,R7,R8);
I3(ADD,R12,R12,R4);
I3S(ADD,R10,R10,R8,ASR,p->SrcUVPitch2);
I3S(ADD,R11,R11,R8,ASR,p->SrcUVPitch2);
I2C(STR,R12,SP,OFS(stack,Y));
I2C(STR,R10,SP,OFS(stack,U));
I2C(STR,R11,SP,OFS(stack,V));
//prepare registers for next row
if (p->SwapXY) I2C(LDR,R6,SP,OFS(stack,DstPitch));
I2C(LDR,R4,SP,OFS(stack,Width));
MB(); I2C(LDR,R0,SP,OFS(stack,EndOfRect));
I3(CMP,NONE,R9,R0);
I0P(B,NE,LoopY);
I2C(ADD,SP,SP,OFS(stack,StackFrame));
CodeEnd();
}
#endif
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