blit_arm_stretch.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:17k
源码类别:
Windows CE
开发平台:
C/C++
- /*****************************************************************************
- *
- * 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