tskvideoinput.c

合众达DEC643的视频例程 CCS 2.20.18 开发

/*
 *  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 <vportcap.h>
#include <tvp51xx.h>    
#include <dec643.h>
#include <evmdm642_capParamsSDTVDefault.h>

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


VPORT_PortParams EVMDM642_vCapParamsPort 
  = EVMDM642_CAP_PARAMS_PORT_EMBEDDED_DEFAULT;


static VPORTCAP_Params EVMDM642_vCapParamsChan 
  = EVMDM642_CAP_PARAMS_CHAN_EMBEDDED_DEFAULT(CIF);

static TVP51XX_ConfParams EVMDM642_vCapParamsTVP5150 
  = EVMDM642_CAP_PARAMS_TVP51XX_EMBEDDED_DEFAULT(PAL601, COMPOSITE, 0);

FVID_Handle  capChan;

void tskVideoInputInit()
{
    
    int status;    
    /******************************************************/
    /* allocate capture  frame buffers                    */
    /* in external heap memory                            */
    /******************************************************/
     EVMDM642_vCapParamsChan.segId = extHeap ;//EXTERNALHEAP;
     EVMDM642_vCapParamsTVP5150.hI2C = DEC643_I2C_hI2C;
     capChan = FVID_create("/VP1CAPTURE/A/1", 
     IOM_INPUT, &status, (Ptr)&EVMDM642_vCapParamsChan, NULL);

	 FVID_control(capChan, VPORT_CMD_EDC_BASE + EDC_CONFIG, 
     (Ptr)&EVMDM642_vCapParamsTVP5150);

}


/*-----------------------------------------------------------*/
/*Start the capturing                                        */
/*-----------------------------------------------------------*/
void tskVideoInputStart() 
{
	FVID_control(capChan, VPORT_CMD_START, NULL);
}

void tskVideoInput()
{
	FVID_Frame *capFrameBuf;
	SCOM_Handle fromInput1toDIS,fromDIStoInput1;
    
    /*打开SCOM模块*/
    fromInput1toDIS = SCOM_open("IN1TODIS");
    fromDIStoInput1 = SCOM_open("DISTOIN1");
    /*申请一个空间*/
    FVID_alloc(capChan, &capFrameBuf);
	
	while(1)
    {		
		/*-----------------------------------------------------------*/
   		/* Send message to process task with pointers to captured frame*/
   		/*-----------------------------------------------------------*/
    	SCOM_putMsg(fromInput1toDIS, (FVID_Frame *)capFrameBuf);
		
		/*-----------------------------------------------------------*/
   		/* Wait for the message from the process task                */
   		/*-----------------------------------------------------------*/
    	SCOM_getMsg(fromDIStoInput1, SYS_FOREVER);
    	
    	/*-----------------------------------------------------------*/
    	/* Capture a new frame.                                      */
    	/*-----------------------------------------------------------*/
    	FVID_exchange(capChan, &capFrameBuf);	    
	}	
}