tskvideocapture.c

和众达DM642EVM基于DSP/BIOS的循环采集显示例程！

#include <std.h>
#include <scom.h>
#include "dm642.h"
#include <dm642_capParams.h>
#include <dm642_disParams.h>

extern int EXTERNALHEAP;

VPORT_PortParams EVMDM642_vCapParamsPort 
  = EVMDM642_CAP_PARAMS_PORT_EMBEDDED_DEFAULT;

static VPORTCAP_Params EVMDM642_vCapParamsChan 
  			= EVMDM642_CAP_PARAMS_CHAN_EMBEDDED_DEFAULT(PAL720);

/* For the vp0 & tvp5146, the port number must be fixed at 0 */
static TVP51XX_ConfParams EVMDM642_vCapParamsTVP5146 
  			= EVMDM642_CAP_PARAMS_TVP51XX_EMBEDDED_DEFAULT(PAL601, COMPOSITE,0);


FVID_Handle capChan;

void VideoCaptureVp1Init()
{
     Int status;
    /******************************************************/
    /* allocate both capture and display frame buffers    */
    /* in external heap memory                            */
    /******************************************************/
    EVMDM642_vCapParamsChan.segId = EXTERNALHEAP;

    EVMDM642_vCapParamsTVP5146.hI2C = DM642_I2C_hI2C;
    /******************************************************/
    /* initialization of capture driver                   */
    /******************************************************/
    capChan = FVID_create("/VP0CAPTURE/A/0", 
            IOM_INPUT, &status, (Ptr)&EVMDM642_vCapParamsChan, NULL);

    
    /******************************************************/
    /* configure video encoder & decoder                  */
    /******************************************************/

    FVID_control(capChan, VPORT_CMD_EDC_BASE + EDC_CONFIG, 
        (Ptr)&EVMDM642_vCapParamsTVP5146);

     
}

void VideoCaptureVp1Start()
{
    volatile Uint32 *p;  
    p=(Uint32 *)0x01c40020;//PFUNC
    *p=0x00300000;
    p=(Uint32 *)0x01c40024;//PDIR
    *p=0x00300000;
    p=(Uint32 *)0x01c4002c;//PDOUT
    *p=0x00300000;

    FVID_control(capChan, VPORT_CMD_START, NULL);

}


void tskVideoCaptureVp1()
{
	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);	    
	}	
}