DSP编程

开发平台：

C/C++

tskVideoOutput.c：源码内容

							#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 "evmdm642.h"
//#include "saa7105.h" /*change*/
#include "saa7121.h" /*change*/
#include "appMain.h"
#include "appThreads.h"
#include "evmdm642_vdisparams.h"
#include "cap_dis_size.h"
/* heap IDs defined in the BIOS configuration file */
extern int extHeap;
#pragma DATA_SECTION(scratch2,".internal_data1");
#pragma DATA_ALIGN(scratch2,8);
unsigned char scratch2[20*LINE_SZ];
//extern unsigned char scratch1[];
FVID_Handle  disChan;
FVID_Frame *disFrameBuf;
void tskVideoOutputInit()
{
    int             status;
    EVMDM642_vDisParamsChan.segId = extHeap;
    EVMDM642_vDisParamsSAA7121.hI2C = EVMDM642_I2C_hI2C;/*change*/
    disChan = FVID_create("/VP2DISPLAY", IOM_OUTPUT,
        &status, (Ptr)&EVMDM642_vDisParamsChan, NULL);
    FVID_control(disChan, VPORT_CMD_EDC_BASE+EDC_CONFIG, (Ptr)&EVMDM642_vDisParamsSAA7121); /*change*/
}
void tskVideoOutputStart()
{
    FVID_control(disChan, VPORT_CMD_START, NULL);
}
/* handle video capture, scaling and re-format */
void tskVideoOutput()
{
    char *inBuf[3], *outBuf[3];
    SCOM_Handle fromProctoOut,fromOuttoProc;
    ScomMessage *pMsgBuf;
    fromProctoOut = SCOM_open("PROCTOOUT");
    fromOuttoProc = SCOM_open("OUTTOPROC");
    FVID_alloc(disChan, &disFrameBuf);
    while(1)
    {
        pMsgBuf = SCOM_getMsg(fromProctoOut, SYS_FOREVER);
        UTL_stsStart( stsDispTime );
        inBuf[0] = pMsgBuf->bufY;
        inBuf[1] = pMsgBuf->bufU;
        inBuf[2] = pMsgBuf->bufV;
        outBuf[0] =  disFrameBuf->frame.iFrm.y1;
        outBuf[1] =  disFrameBuf->frame.iFrm.cb1;
        outBuf[2] =  disFrameBuf->frame.iFrm.cr1;
        yuv420to422(inBuf,outBuf,720,480);
        UTL_stsStop( stsDispTime );
        SCOM_putMsg(fromOuttoProc, pMsgBuf);
        FVID_exchange(disChan, &disFrameBuf);
    }
}

						