tskvideooutput.c

DM643sobel边缘检测程序

/*
 *  Copyright 2003 by Texas Instruments Incorporated.
 *  All rights reserved. Property of Texas Instruments Incorporated.
 *  Restricted rights to use, duplicate or disclose this code are
 *  granted through contract.
 *  
 */
#include <std.h>
#include <csl.h>
#include <csl_dat.h>
#include <csl_cache.h>
#include <chan.h>
#include <scom.h>
#include <utl.h>
#include <fvid.h>
#include <tsk.h>

#include <edc.h>
#include <vport.h>
#include <vportdis.h>
#include <saa7105.h>    
#include <dec643.h>                     
#include <evmdm642_disParamsSDTVDefault.h>


#include "appMain.h"
#include "appThreads.h"
#include "tskVideoOutput.h"
#include "prepost.h"


VPORT_PortParams EVMDM642_vDisParamsPort 
  = EVMDM642_DIS_PARAMS_PORT_DEFAULT;

static VPORTDIS_Params EVMDM642_vDisParamsChan 
  = EVMDM642_DIS_PARAMS_CHAN_BT656_DEFAULT(PAL);

static SAA7105_ConfParams EVMDM642_vDisParamsSAA7105 
  = EVMDM642_DIS_PARAMS_SAA7105_SDTV_DEFAULT(PAL720, SVIDEO);


FVID_Handle  disChan;
FVID_Frame *disFrameBuf;

/*-------------------------------------------------------*/
/* Initialize the display channel                        */
/*-------------------------------------------------------*/
void tskVideoOutputInit()
{
    int status;    

	EVMDM642_vDisParamsChan.segId = extHeap; //EXTERNALHEAP;
    EVMDM642_vDisParamsSAA7105.hI2C = DEC643_I2C_hI2C;
    
    /******************************************************/
    /* initialization of display driver                   */
    /******************************************************/
    disChan = FVID_create("/VP2DISPLAY", IOM_OUTPUT, 
        &status, (Ptr)&EVMDM642_vDisParamsChan, NULL);
        

    /******************************************************/
    /* configure video encoder & decoder                  */
    /******************************************************/
    FVID_control(disChan, VPORT_CMD_EDC_BASE + EDC_CONFIG, 
        (Ptr)&EVMDM642_vDisParamsSAA7105);

}


/*-------------------------------------------------------*/
/* Start the display channel                             */
/*-------------------------------------------------------*/
void tskVideoOutputStart() 
{
	FVID_control(disChan, VPORT_CMD_START, NULL);
}

void tskVideoOutput()
{
    unsigned char   *frame;
    IMG in1,out1;
    SCOM_Handle fromProctoOut,fromOuttoProc;
    ScomMessage scomMsg;
	ScomBufChannels *pMsgBuf; 
	
    fromProctoOut = SCOM_open("PROCTOOUT");
    fromOuttoProc = SCOM_open("OUTTOPROC");

    FVID_control(disChan, VPORT_CMD_START, NULL);

    FVID_alloc(disChan, &disFrameBuf);

    // Give the process thread a buffer to pass back to us
    SCOM_putMsg(fromOuttoProc, &scomMsg);

    while(1)
    {
        pMsgBuf = SCOM_getMsg(fromProctoOut, SYS_FOREVER);
        
        frame = (unsigned char *)pMsgBuf->bufChannel;
            		   
 		in1.Y_data  = frame;
 		in1.Cb_data = in1.Y_data + FRM_WIDTH*FRM_HEIGHT;
		in1.Cr_data = in1.Cb_data + ((FRM_WIDTH*FRM_HEIGHT)>>2);

		out1.Y_data = disFrameBuf->frame.iFrm.y1;
		out1.Cb_data = disFrameBuf->frame.iFrm.cr1;
		out1.Cr_data = disFrameBuf->frame.iFrm.cb1;
		
        yuv420to422(in1,out1,720,576);

		memset(out1.Cb_data,0x80,((FRM_WIDTH*FRM_HEIGHT)>>1));
 		memset(out1.Cr_data,0x80,((FRM_WIDTH*FRM_HEIGHT)>>1));
        
        UTL_stsStop( stsDispTime );
        
        CACHE_clean(CACHE_L2ALL,NULL,NULL);
        
		SCOM_putMsg(fromOuttoProc, NULL);
        FVID_exchange(disChan, &disFrameBuf);
    }
}