camif.c

samsung 2410 demo源代码

			break;
		case CAM_S5X532:
			rCIGCTRL|= (1<<31)|(1<<30)|(1<<29); //camera I/F soft reset
			Delay(1);
			rCIGCTRL&= ~(1<<31);
			
			rCIGCTRL&=~(1<<30);	//external camera reset assertion (S5X433,AU70H=low active)	
			Delay(1000);
			rCIGCTRL|=(1<<30);		//external camera reset deassertion	

			rCIGCTRL|=(1<<26);  // XciPCLK Polarity setting
			break;
		default:
			break;
	}	

}

void SetCAMClockDivider(int divn)
{
    rCLKDIVN= (rCLKDIVN & ~(0xf<<16))|(divn<<16);    
}

/* Description of Parameters
CoDstWidth: Destination Width of Codec Path
CoDstHeight: Destination Height of Codec Path
PrDstWidth: Destination Width of Preview Path
PrDstHeight: Destination Height of Preview Path
WinHorOffset: Size of Window Offset for Horizontal Direction
WinVerOffset: Size of Window Offset for Vertical Direction
CoFrameBuffer: Start Address for Codec DMA
PrFrameBuffer: Start Address for Previe DMA
*/
void CamInit(U32 CoDstWidth, U32 CoDstHeight, U32 WinHorOffset, U32 WinVerOffset, U32 CoFrameBuffer)
{
	U32 WinOfsEn;
	U32 divisor, multiplier;
	U32 MainBurstSizeY, RemainedBurstSizeY, MainBurstSizeC, RemainedBurstSizeC, MainBurstSizeRGB, RemainedBurstSizeRGB;
	U32 H_Shift, V_Shift, PreHorRatio, PreVerRatio, MainHorRatio, MainVerRatio;
	U32 SrcWidth, SrcHeight;
	U32 OrgSrcWidth, OrgSrcHeight;
	U32 ScaleUp_H_Co, ScaleUp_V_Co, ScaleUp_H_Pr, ScaleUp_V_Pr;

	//constraint for size setting is checked here.........

	//constant for calculating codec dma address
	if(camCodecOutput==CAM_RGB24B)
		multiplier=4;
	else if(camCodecOutput==CAM_RGB16B)
		multiplier=2;

		
	
	if(WinHorOffset==0 && WinVerOffset==0)
		WinOfsEn=0;
	else
		WinOfsEn=1;

	switch(CAMSIZE) {
		case VGA_XSIZE:
			OrgSrcWidth=VGA_XSIZE;
			OrgSrcHeight=VGA_YSIZE;
			break;
		case MEGA1_XSIZE:
			OrgSrcWidth=MEGA1_XSIZE;
			OrgSrcHeight=MEGA1_YSIZE;
			break;
		case MEGA2_XSIZE:
			OrgSrcWidth=MEGA2_XSIZE;
			OrgSrcHeight=MEGA2_YSIZE;
			break;
		default:
			OrgSrcWidth=VGA_XSIZE;
			OrgSrcHeight=VGA_YSIZE;
			break;
	}		
		

	SrcWidth=OrgSrcWidth-2*WinHorOffset;
	SrcHeight=OrgSrcHeight-2*WinVerOffset;

	printf("SrcWidth:%d, SrcHeight:%d\n", SrcWidth, SrcHeight);
	if(SrcWidth<=CoDstWidth) ScaleUp_H_Co=1;
	else ScaleUp_H_Co=0;		

	if(SrcHeight<=CoDstHeight) ScaleUp_V_Co=1;
	else ScaleUp_V_Co=0;		


	rCIGCTRL = (rCIGCTRL & ~(0x3<<27))|(1<<26);
	//rCIGCTRL |= (0x1<<27)|(1<<26);
	rCISRCFMT=(CAM_ITU601<<31)|(0<<30)|(CAM_ITU601_8B<<29)|(OrgSrcWidth<<16)|(CAM_ORDER_YCRYCB<<14)|(OrgSrcHeight);
	rCIWDOFST=(WinOfsEn<<31)|(WinHorOffset<<16)|(WinVerOffset);
	rCIDOWSFT2=(WinHorOffset<<16)|(WinVerOffset);

	if(CAM_CODEC_PINGPONG) {
		rCICOYSA1=CoFrameBuffer;
		rCICOYSA2=rCICOYSA1+CoDstWidth*CoDstHeight*multiplier;
		rCICOYSA3=rCICOYSA2+CoDstWidth*CoDstHeight*multiplier;
		rCICOYSA4=rCICOYSA3+CoDstWidth*CoDstHeight*multiplier;
/*		
		rCICOCBSA1=rCICOYSA1+CoDstWidth*CoDstHeight;
		rCICOCBSA2=rCICOYSA2+CoDstWidth*CoDstHeight;
		rCICOCBSA3=rCICOYSA3+CoDstWidth*CoDstHeight;
		rCICOCBSA4=rCICOYSA4+CoDstWidth*CoDstHeight;

		rCICOCRSA1=rCICOCBSA1+CoDstWidth*CoDstHeight/divisor;
		rCICOCRSA2=rCICOCBSA2+CoDstWidth*CoDstHeight/divisor;
		rCICOCRSA3=rCICOCBSA3+CoDstWidth*CoDstHeight/divisor;
		rCICOCRSA4=rCICOCBSA4+CoDstWidth*CoDstHeight/divisor;
*/		
	}
	else {
		rCICOYSA1=CoFrameBuffer;
		rCICOYSA2=rCICOYSA1;
		rCICOYSA3=rCICOYSA1;
		rCICOYSA4=rCICOYSA1;
/*		
		rCICOCBSA1=rCICOYSA1+CoDstWidth*CoDstHeight;
		rCICOCBSA2=rCICOCBSA1;
		rCICOCBSA3=rCICOCBSA1;
		rCICOCBSA4=rCICOCBSA1;

		rCICOCRSA1=rCICOCBSA1+CoDstWidth*CoDstHeight/divisor;
		rCICOCRSA2=rCICOCRSA1;
		rCICOCRSA3=rCICOCRSA1;
		rCICOCRSA4=rCICOCRSA1;
*/				
	}
	
	rCICOTRGFMT=(1<<31)|(1<<30)|(1<<29)|(CoDstWidth<<16)|(CAM_FLIP_NORMAL<<14)|(CoDstHeight);

	CalculateBurstSize(CoDstWidth, &MainBurstSizeY, &RemainedBurstSizeY);
	CalculateBurstSize(CoDstWidth/2, &MainBurstSizeC, &RemainedBurstSizeC);
	printf("main:%d, remain:%d\n", MainBurstSizeY, RemainedBurstSizeY);
	//rCICOCTRL=(MainBurstSizeY<<19)|(RemainedBurstSizeY<<14)|(MainBurstSizeC<<9)|(RemainedBurstSizeC<<4);
	rCICOCTRL=(8<<19)|(4<<14)|(4<<9)|(2<<4);

	CalculatePrescalerRatioShift(SrcWidth, CoDstWidth, &PreHorRatio, &H_Shift);
	CalculatePrescalerRatioShift(SrcHeight, CoDstHeight, &PreVerRatio, &V_Shift);
	MainHorRatio=(SrcWidth<<8)/(CoDstWidth<<H_Shift);
	MainVerRatio=(SrcHeight<<8)/(CoDstHeight<<V_Shift);
    			
	rCICOSCPRERATIO=((10-H_Shift-V_Shift)<<28)|(PreHorRatio<<16)|(PreVerRatio<<0);
	rCICOSCPREDST=((SrcWidth/PreHorRatio)<<16)|(SrcHeight/PreVerRatio); 
	rCICOSCCTRL=(CAM_SCALER_BYPASS_OFF<<31)|(ScaleUp_H_Co<<30)|(ScaleUp_V_Co<<29)|(MainHorRatio<<16)|(MainVerRatio);

	rCICOTAREA=CoDstWidth*CoDstHeight;
	
	rCIIMGCPT=(1<<26)|(0<<25)|(1<<24)|(0<<18);
	rCICOCPTSEQ=0xffffffff;
	rCICOSCOS=0x0;
	

	//clear overflow because unintentional overflow may be existed...
	rCIWDOFST|=(1<<30)|(0xf<<12);
	rCIWDOFST&=~((1<<30)|(0xf<<12));	

}



/********************************************************
 CalculateBurstSize - Calculate the busrt lengths
 
 Description:	
 - dstHSize: the number of the byte of H Size.
 
*/
void CalculateBurstSize(U32 hSize,U32 *mainBurstSize,U32 *remainedBurstSize)
{
	U32 tmp;	
	tmp=(hSize/4)%16;
	switch(tmp) {
		case 0:
			*mainBurstSize=16;
			*remainedBurstSize=16;
			break;
		case 4:
			*mainBurstSize=16;
			*remainedBurstSize=4;
			break;
		case 8:
			*mainBurstSize=16;
			*remainedBurstSize=8;
			break;
		default: 
			tmp=(hSize/4)%8;
			switch(tmp) {
				case 0:
					*mainBurstSize=8;
					*remainedBurstSize=8;
					break;
				case 4:
					*mainBurstSize=8;
					*remainedBurstSize=4;
				default:
					*mainBurstSize=4;
					tmp=(hSize/4)%4;
					*remainedBurstSize= (tmp) ? tmp: 4;
					break;
			}
			break;
	}		    	    		
}



/********************************************************
 CalculatePrescalerRatioShift - none
 
 Description:	
 - none
 
*/
void CalculatePrescalerRatioShift(U32 SrcSize, U32 DstSize, U32 *ratio,U32 *shift)
{
	if(SrcSize>=64*DstSize) {
		printf("ERROR: out of the prescaler range: SrcSize/DstSize = %d(< 64)\n",SrcSize/DstSize);
		while(1);
	}
	else if(SrcSize>=32*DstSize) {
		*ratio=32;
		*shift=5;
	}
	else if(SrcSize>=16*DstSize) {
		*ratio=16;
		*shift=4;
	}
	else if(SrcSize>=8*DstSize) {
		*ratio=8;
		*shift=3;
	}
	else if(SrcSize>=4*DstSize) {
		*ratio=4;
		*shift=2;
	}
	else if(SrcSize>=2*DstSize) {
		*ratio=2;
		*shift=1;
	}
	else {
		*ratio=1;
		*shift=0;
	}    	
}


void Test_CamCodecPreviewQVGADisplay(void)
{



	U32 mode;

	camTestMode=CAM_TEST_MODE_CODEC_POST;
	camCodecCaptureCount=0;
	camPviewCaptureCount=0;
	camPviewStatus=CAM_STOPPED;
	camCodecStatus=CAM_STOPPED;

	mode=0;

	InitLDI_LTS222();

	camCodecInput=CAM_CCIR420;
	camCodecOutput=CAM_RGB16B;


	Lcd_Port_Init();    
    Lcd_PowerEnable(0, 1);
    Lcd_Init(MODE_TFT_16BIT_240320);
    Glib_Init(MODE_TFT_16BIT_240320);    
    Glib_ClearScr(0, MODE_TFT_16BIT_240320);
    
    Lcd_EnvidOnOff(1);
    

	//Camera I/F initialization
	if(CAMTYPE==CAM_S5X532)
		CamInit(240, 320, 112, 40, 0x33800000);
	else
		CamInit(240, 320, 0, 0, 0x33800000);


	pISR_CAM=(U32)CamCodecIsr;    
	rINTMSK&=~(BIT_CAM);

	printf("Camera preview for codec will be started!\n");
	printf("Press Enter to continue!\n");
	

	if(rCICOSTATUS&0xe0000000) {
		rCIWDOFST|=(1<<30|1<<15|1<<14);
		rCIWDOFST&=~(1<<30|1<<15|1<<14);
	}
	

	CamCaptureStart(CAM_CODEC_SCALER_CAPTURE_ENABLE_BIT);

	if(camCodecOutput==CAM_CCIR422) {
		while(1) {
			if(camCodecDataValid==1) {
				camCodecDataValid=0;
				//Display_Cam_Image(PQVGA_XSIZE, PQVGA_YSIZE);
			}	
			if(Uart_GetKey()=='\r') break;
		}
	}	
	else GetIntNum();
    
	CamCaptureStop();
    
	printf("Wait until the current frame capture is completed.\n");
    
	while(!( camCodecStatus==CAM_STOPPED));

	printf("camCodecCaptureCount:%d\n",camCodecCaptureCount);
	printf("codec Status register:0x%x\n", rCICOSTATUS);
	
	
	rINTMSK|=BIT_CAM;	
	
}



void CamPortInit(void)
{

	rGPEDN |= (0x3<<14);
	rGPECON = (rGPECON & ~(0xf<<28))|(0xa<<28);
	
	rGPJDN = 0x1fff;
	rGPJCON = 0x2aaaaaa;	
}

void CamClockInit(void)
{
	SetUPLL( 64, 7, 0);		// 96MHz UPLL
	rCLKSRC	= (rCLKSRC & ~(1<<11))|(1<<5); 	//USYSCLK = FOUTupll	
}