tskvideooutput.c

基于DM642的JPEG图象编解码的网络传输程序

#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"

#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_vDisParamsSAA7105.hI2C = EVMDM642_I2C_hI2C;

    disChan = FVID_create("/VP2DISPLAY", IOM_OUTPUT,
        &status, (Ptr)&EVMDM642_vDisParamsChan, NULL);

    FVID_control(disChan, VPORT_CMD_EDC_BASE+EDC_CONFIG, (Ptr)&EVMDM642_vDisParamsSAA7105);

}

void tskVideoOutputStart()
{
    FVID_control(disChan, VPORT_CMD_START, NULL);
}

/* handle video capture, scaling and re-format */
void tskVideoOutput()
{
    char *inBuf[3], *outBuf[3];
    ScomMessage *pMsgBuf;
    SCOM_Handle hs_Out2Dec,hs_Dec2Out;

    hs_Out2Dec = SCOM_open("OUT2DEC");
    hs_Dec2Out = SCOM_open("DEC2OUT");

    FVID_alloc(disChan, &disFrameBuf);

    while(1)
    {
        // Get a linear output frame
        pMsgBuf = SCOM_getMsg( hs_Dec2Out, 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;

        // Convert it
        yuv420to422(inBuf,outBuf,720,480);

        UTL_stsStop( stsDispTime );

        // Tell the decoder we're done
        SCOM_putMsg( hs_Out2Dec, pMsgBuf );


if( *(int *)((char *)disFrameBuf->frame.iFrm.y1+0x72ec) != 0xc0c0c0c0 )
{
    for(;;);
}
CACHE_clean( CACHE_L2, (char *)disFrameBuf->frame.iFrm.y1+0x72ec, 1 );

        // Get a new buffer from the display driver
        FVID_exchange(disChan, &disFrameBuf);
    }
}