digest.c

车载电子影音系统dvd播放系统原程序代码

        __iYDigest=(int)((__dwCountSystem % 157) + 30);
        if(__iXDigest<=24 && __iYDigest<=44) // can't cover the digest number
        {
            __iXDigest=32;
            __iYDigest=50;
        }
///////////////////////////////////////////

        // "20" means show 20 Frames in one track
        if ( __bTrackRepeat <= 20 )
        {
             __btDigestEnableAudio= TRUE;
            _DIGEST_DisplayFrame ( __bTrackNO );
            __bTrackRepeat++;

            _DIGEST_ShowInfor ( );
        }
        else
        {

            __bTrackRepeat= NULL;

            __bTrackNO++;
            if ( __bTrackNO > __wTrackEnd )
                __bTrackNO= (BYTE)__wTrackBegin;      // Play ending Track, then Play first Track
        }

        }
        break;

    case    DIGEST_STYLE_DISCVIEW:
        {
        if ( ! __bTrackRepeat  )
        {
            __bTemp= __bPlayOrder % 3;
            __iXDigest= __bTableX[__bTemp];
            __bTemp= __bPlayOrder / 3;
            __iYDigest= __bTableY[__bTemp];
            __btDigestEnableAudio= FALSE;

            // Calculate The Absolute time
            __dwTimeShow=__dwTimeDiscBegin+
                (__bPlayOrder*((__dwTimeDiscEnd-__dwTimeDiscBegin)/9));

            __dwTemp=__dwTimeShow;

            //get track number
            CDINFO_ParseInfo ( VCD_ENTRIES_TRACK, &__dwTemp, NULL );
            __bTrackNO=(BYTE)__dwTemp;

            _DIGEST_DisplayFrame ( __bTrackNO );
            _DIGEST_ShowInfor ( );
            __bTrackRepeat++;
        }
        else
        {
            /// WYC.050a for digest A/V hang
            //__bModePlay= MODE_PLAYUNKNOW;

            __bTrackRepeat= NULL;
            W99AV_EnableInterrupt(NULL);

            // Preapre next track playing
            __bPlayOrder++;
            if ( __bPlayOrder > 8 )
                __bPlayOrder= NULL;
        }

        }
        break;

    case    DIGEST_STYLE_ROUND:
        if ( __bTrackRepeat <= 20 )
        {
            if ( ! __bTrackRepeat )
            {
                // Record the time
                // WYC.051
                __dwTimeDigestBegin = UTL_GetSysTimer();
                //__dwTimeDigestBegin= __dwCountSystem;

                __bTemp= __bPlayOrder % 3;
                __iXDigest= __bTableX[__bTemp];
                __bTemp= __bPlayOrder / 3;
                __iYDigest= __bTableY[__bTemp];

                __btDigestEnableAudio= TRUE;
                _DIGEST_ShowInfor ( );
                _DIGEST_DisplayFrame ( __bTrackNO );
                _DIGEST_ShowInfor ( );
            }
            else
            {
                // Let OSD char can Flash
                if ( __bTrackRepeat % 2 )
                    _DIGEST_ShowInfor ( );
                else
                    _DIGEST_ShowInfor ( );
            }

            __bTrackRepeat++;
            UTL_DelayTime ( COUNT_500_MSEC, TRUE );

            // Limit only show 5 secs.
            if ( /* wyc.051 __dwCountSystem*/UTL_GetSysTimer() > ( __dwTimeDigestBegin+ COUNT_5_SEC ) )
                __bTrackRepeat+= 100;
        }
        else
        {
            // Recover to first image
            __btDigestEnableAudio= FALSE;

            __bTrackRepeat= NULL;
            _DIGEST_DisplayFrame ( __bTrackNO );
            W99AV_EnableInterrupt(NULL);
            _DIGEST_ShowInfor ( );

            __bTrackNO++;
            if ( __bTrackNO > __wTrackEnd )
                __bTrackNO= (BYTE)__wTrackBegin;

            __bPlayOrder++;
            if ( __bPlayOrder > 8 )
                __bPlayOrder= NULL;
        }
        break;

    case    DIGEST_STYLE_FREEZE:
        // "17" means "FREEZE" mode will turn 2 rounds
        if ( __bTrackRepeat <= 17 )
        {
            // First time will Mute the audio
            if ( !__bTrackRepeat)
                    __btDigestEnableAudio= FALSE;
            __bTemp= __bPlayOrder % 3;
            __iXDigest= __bTableX[__bTemp];
            __bTemp= __bPlayOrder / 3;
            __iYDigest= __bTableY[__bTemp];

                _DIGEST_ShowInfor ( );
            _DIGEST_DisplayFrame ( __bTrackNO );

                __btDigestEnableAudio= TRUE;
                _DIGEST_ShowInfor (  );
            _DIGEST_DisplayFrame ( __bTrackNO );
                _DIGEST_ShowInfor ( );

            __bTrackRepeat++;
            __bPlayOrder++;
            if ( __bPlayOrder > 8 )
                __bPlayOrder= NULL;
        }
        else
        {
            __btDigestEnableAudio= FALSE;
            _DIGEST_ShowInfor ( );

            __bTrackRepeat= NULL;
            __bPlayOrder= NULL;
            __bTrackNO++;
            if ( __bTrackNO > __wTrackEnd )
                __bTrackNO= (BYTE)__wTrackBegin;
        }
        break;

#endif // DIGEST_TWO_MODE

    case    DIGEST_STYLE_NORMAL:
    case    DIGEST_STYLE_NORMAL4:
            // style DIGEST_STYLE_NORMAL4 and
            // style DIGEST_STYLE_NORMAL can be distinguished by __bGrid
    default:
        if ( __bTrackRepeat <= 35 )
        {
            if ( ! __bTrackRepeat )
            {
//LJY278, fixed SONY test title 7/7 -> play black screen issue. The audio track won't be shown.            
                if(UTL_CheckPlayItemMode ( __bTrackNO ) == MODE_PLAYAUDIO)
                {
                    __bPlayOrder= NULL;
                    __bTrackNO= __bPlayOrder+ __bPageNO* (__bGrid* __bGrid)+ (BYTE)__wTrackBegin;
                    break;
                }                                   
                __dwTimeDigestBegin = UTL_GetSysTimer();

                __bTemp= __bPlayOrder % __bGrid;
                __iXDigest= __bTableX[__bTemp];
                __bTemp= __bPlayOrder / __bGrid;
                __iYDigest= __bTableY[__bTemp];

                __btDigestEnableAudio= TRUE;

                //LJY2.81, for DVCD discview in stop mode
                if(__bStyle & DIGEST_DVCD_DISCVIEW)
                {
                	__dwTimeShow=__dwTimeDiscBegin + (__bPlayOrder*((__dwTimeDiscEnd-__dwTimeDiscBegin)/9));
                    __dwTemp=__dwTimeShow;
                //get track number
                    CDINFO_ParseInfo ( VCD_ENTRIES_TRACK, &__dwTemp, NULL );
                    __bTrackNO=(BYTE)__dwTemp;               		
               	}
                
                _DIGEST_DisplayFrame ( __bTrackNO );
                _DIGEST_ShowInfor ( );
                
                }
            else
            {
                // let interrupt handle the IFSC only
                // should be the same action???
                // disable it make the swosd not show so fast
                // wyc.100 The delay purpose is because when want decrease the flash frequency
                // of swosd number, we should to add delay to make the audio longer
                        //LJY276
#ifdef SUPPORT_CDIF
            if(__bServoAutoCtrl)
                UTL_DelayTime (COUNT_100_MSEC, TRUE );
            else
                {
                            MONITOR_CheckBuffer(); //LJY277.3rd
                _dwTemp = UTL_GetSysTimer();
                while ( ( UTL_GetSysTimer()- _dwTemp ) < COUNT_100_MSEC);
            }
#else
            UTL_DelayTime (COUNT_100_MSEC, TRUE );
#endif // #ifdef SUPPORT_CDIF   
                        
                if (__bTrackRepeat == 0)
                    _DIGEST_ShowInfor ( );
            }

            __bTrackRepeat++;

            // limit only show 5 secs.
            if( !(__bStyle & DIGEST_DVCD_DISCVIEW))
                if ( /* wyc.051 __dwCountSystem*/UTL_GetSysTimer() > ( __dwTimeDigestBegin+ COUNT_5_SEC ) )
                    __bTrackRepeat+= 100;           
        }
        else
        {
            // Recover to first image
            __bTrackRepeat= NULL;
            W99AV_EnableInterrupt(NULL);
            //LJY2.81, for DVCD discview in stop mode
            if(__bStyle & DIGEST_DVCD_DISCVIEW)
            {
                __bPlayOrder++;
                if ( __bPlayOrder > 8 )
                    __bPlayOrder= NULL;
                break;
	        }
            
            __btDigestEnableAudio= FALSE;
            _DIGEST_DisplayFrame ( __bTrackNO );

            // same number, not show???
            _DIGEST_ShowInfor ( );

            // Preapre next track playing
            __bPlayOrder++;
            // style DIGEST_STYLE_NORMAL4 and
            // style DIGEST_STYLE_NORMAL can be distinguished by __bGrid            
            if ( __bPlayOrder > (__bGrid* __bGrid- 1 ) )
                __bPlayOrder= NULL;

            __bTrackNO= __bPlayOrder+ __bPageNO* (__bGrid* __bGrid)+ (BYTE)__wTrackBegin;
            if ( __bTrackNO > __wTrackEnd )
            {
                __bPlayOrder= NULL;
                __bTrackNO= __bPlayOrder+ __bPageNO* (__bGrid* __bGrid)+ (BYTE)__wTrackBegin;
            }
        }
        break;
}       // __bStyle

    return TRUE;
}

/////////////////////////////////////////
// protect function
//  *********************************************************************
//  Function    :   _DIGEST_DisplayFrame
//  Description :   The function can move Sub-Picture position
//                  __bTrackRepeat is a important factor when Display Frame
//                  FIRST TIME/ OTHER TIMES in one bitstream
//  Arguments   :   bTrackNO:   which Track
//  Return      :
//  Side Effect :
//  *********************************************************************
BIT   _DIGEST_DisplayFrame ( BYTE bTrackNO )
{
    // WYC.050a DWORD       dwThreshold;
    BYTE         i;

    // Stop to process if bTrackNO is out of range   
    // wyc.100
    if (( bTrackNO > __wTrackEnd ) && (!__bDVDDigest))
        return FALSE;

    if ( ! __bTrackRepeat )     // first time
    {
        // update the new track information
        // wyc.100
        if (!__bDVDDigest)
            UTL_ShowTrack(MSG_TRACK, bTrackNO,0);
        // f/w 0.45, MICKY, must close INT or last IFSC will fail
        W99AV_EnableInterrupt(NULL);

        // for BC5380, IFSC means the decoded frame is moved to digest grid
//LJY1.05, recover the drak frame issue.(it may be caused by the last frame data combine with new frame data)
#if 1        
        if (( __bDigestModePlay & MODE_PLAYMOTION ) && (!__bDVDDigest))
        {
            i=FALSE;
            // should if the IFSC can't be found in the track end ???
            // when the next track data is input, it may cause invalid data

            // Wait for last I-Frame can be display complete
            //__dwCheckTime= __dwCountSystem;
            // wyc.051
            __dwCheckTime= UTL_GetSysTimer();

            // wyc.100 , in check IFSC progress, disable the ISR check IFSC to avoid error
            EX1 = 0;
          
            while ( (UTL_GetSysTimer() - __dwCheckTime ) < COUNT_4_SEC )
            {
                //LJY276
#ifdef SUPPORT_CDIF
                if(__bServoAutoCtrl)
                    SERVO_Monitor();  
                else
                                        MONITOR_CheckBuffer(); //LJY277.3rd
#else
                                        SERVO_Monitor();
#endif // SUPPORT_CDIF

                if (HAL_CheckInterrupt(INT_IFSC))
                {
                    i=TRUE;
                    __dwIFrames++;
                    break;
                }
            }   // while
            EX1 = 1;
        }   // PLAYMOTION
#endif
        // it's possible the PSR_IFSC is not detected
        // & CD-IF is closed,
        // it will cause the last frame data combine with new frame data

//        HAL_ControlCDIF(HAL_CDIF_CLOSE);  //LJY276, marked
        CHIPS_OpenAudio( FALSE );

        // get play mode for this track
        // wyc.100
        if (!__bDVDDigest)
            __bDigestModePlay = UTL_CheckPlayItemMode ( bTrackNO );
        else
            __bDigestModePlay = MODE_PLAYMOTION;

        // should add some delay here ???
        // Changing the Coordination, The most safe condition is Chip is not displaying now