monitor.c

车载电子影音系统dvd播放系统原程序代码

            _bBrightnessDuration = 0;
        }
    }

// ** TCH0.65; begin... 
#ifdef SUPPORT_ANTISHOCK
{
	extern BYTE __bWrongPartNo;
    
        W99AV_ReadDRAMData ( 0xc9, & __dwTemp ); 
        if ( HIWORD(__dwTemp ) == 0x111)
        {
                __bWrongPartNo = TRUE;
                printf ( "\n *** Wrong Part [%lx]", __dwTemp ); // ** TCH0.65; 
        }
}
#endif
// ** TCH0.65; end... 


#ifdef  NOT_SUPPORT_HWINT
    ISR_Timer0();
    //DVD_047-1
    if (__btPlaying)
        ISR_INT1();
#endif  // #ifdef NOT_SUPPORT_HWINT
}


//  *********************************************************************
//  Function    :   MONITOR_AudioStream
//  Description :   Check audio bitrate for SVCD/MP3 title, and re-setting
//                  the correct value to audio DAC.
//  Arguments   :   None
//  Return      :   None
//  Side Effect :
//  *********************************************************************
void MONITOR_AudioStream(void)
{
    // some SVCD is not 48K??(It don't rain..., it's 44.1K)
    extern  BYTE    __bCheckAudioType;
    // LLY.101, replace "dwAudioFreq" with "_dwMONITORTemp"

    // monitor audio frequency and set DAC to correct freq.
    // continue check 5 times.
    if(__btPlaying)
    {
        if(__bCheckAudioType & CHECK_AUDIO_FREQ)
        {
            if ( HAL_Monitor(HAL_MONITOR_AUDIO_FREQ) )
            {
                // 1. read back audio frequency, and set audio DAC -- LLY.275a
                W99AV_ReadInfo(W99AV_INFO_AUDIOFREQ, &_dwMONITORTemp); //Step 2: DSP reads the header for frequency and waits.
                // LLY.101, re-adjust the control flow
                HAL_SetAudioDAC((BYTE)_dwMONITORTemp); //Step3: Host reads the frequency DM and sets correct ACLK frequency & programs ADAC. 


                // 2. read back the audio's samples/frame value -- LLY.171
                W99AV_ReadInfo(W99AV_INFO_SAMPLES_PER_FRAME, &_dwMONITORTemp);
                __wW99AVSamplesPerFrame=(WORD)_dwMONITORTemp;

                //Kevin1.23, Freq may change after changing track/file within 1 sec=> set prologic again
                CHIPS_ProLogicControl();

				//Kevin1.25, fix "SPDIF discont. while changing files" and "Freq wrong at file beginning" by programming ACLK & ADAC first                
				//Step4: host tells DSP to start decoding             
#ifdef SUPPORT_WMA 
                if(__bAttrPlay==ATTR_WMA)                              
                    W99AV_WriteDM(W99AV_DM_WMA_FREQ_READ_FLAG, 1);  
#endif                
                if(__bAttrPlay==ATTR_MP3)                            
                    W99AV_WriteDM(W99AV_DM_MP3_FREQ_READ_FLAG, 1);  


                __bCheckAudioType &= ~CHECK_AUDIO_FREQ;

            }
        }
        // wyc.170-2, monitor the audio stream and if need to check LPCM de-emphasis, we check the de-emphasis information
        // and set audio DAC in W6630.
#ifdef SUPPORT_AUDIO_DEEMPHASYS
        if (__bCheckAudioType & CHECK_LPCM_DEEMPHASIS)
        {
            if (HAL_Monitor(HAL_MONITOR_LPCM_DEEMPHASIS))
            {
                // wyc.275a, enhance de-emphasis code.
                W99AV_ReadInfo(W99AV_INFO_LPCM_DEEMPHASIS, &_dwMONITORTemp);
                if (_dwMONITORTemp)
                {
                    //Kevin2.37, add
                    __bHAL1_Deemphasis = TRUE; //referenced by _ProgramAudioDAC()
                    
                    // Read back audio frequency, and re-setting audio DAC -- LLY.275a
                    W99AV_ReadInfo(W99AV_INFO_AUDIOFREQ, &_dwMONITORTemp);
                    HAL_SetAudioDAC((BYTE)_dwMONITORTemp);
                }
                __bCheckAudioType &= ~CHECK_LPCM_DEEMPHASIS;
            }
        }
#endif //
        // end ..

        // LLY.161-2, it's unnecessary by 20010928 DSP code
        // because detecting CDDA method has modified
        /*
        // LLY.101, run time detect CDDA format
        if(__bCheckAudioType & CHECK_CDDA_FORMAT)
        { 
            if(HAL_Monitor(HAL_MONITOR_CDDA_FORMAT) )
            {
                W99AV_ReadInfo(W99AV_INFO_CDDA_FORMAT, &_dwMONITORTemp);
                __bCDDA_DTS &= 0xF0; // clear bit[3:0] first
                if(_dwMONITORTemp== W99AV_DTS_CDDA_FORMAT)
                {
                     // LLY.103-1, don't control SPDIF_MUTE procedure by MONITOR module
                     // only let CHIPS to control this procedure : CHIPS_ControlSPDIFOutput()
                     //W99AV_WriteDM (W99AV_DM_SPDIF_MUTE, 1) ;   // Turn-on SPDIF
                     // LLY.161, set CDDA bitstream format
                     __bCDDA_DTS |= CDDA_BITSTREAM_DTS;
                }
                else
                {
                     // LLY.102-1, disable PARFIFOCTLR[7] to 0
                     // let parser know that the stream is pure CDDA format
                     __wW99AVPARFIFOCTLRLow &= 0xFF7F;
                     W99AV_WriteRegDW (PARFIFOCTLR, __wW99AVPARFIFOCTLRLow, __wW99AVPARFIFOCTLRHigh) ;
                     // LLY.104, tell dsp start to decode pure CDDA,
                     // othersise, dsp will hang
                     W99AV_WriteDM (0x705, 1) ;
                     // LLY.161, set CDDA bitstream format
                     __bCDDA_DTS |= CDDA_BITSTREAM_PURE;
                }
                // LLY.161, tell OSD to update disc type info.
                OSD_Output(MSG_DISCTYPE, __wDiscType, 0x0);
                __bCheckAudioType &= ~CHECK_CDDA_FORMAT;
                // LLY.103-1, re-call HAL_SetAudioType() to let CHIPS
                // issue W99AV_DM_SPDIF_MUTE control base on correct __bCDDA_DTS value
                CHIPS_ControlSPDIFOutput();
            }
        }
        */
    }
}


//  ************************************************************************
//  Function    :   MONITOR_CheckBuffer
//  Description :   Monitor buffer fullness or playing range for different
//                  playing mode. It also do the buffer control and check
//                  some info. : Repeat AB, GotoTime, NPF/ Freeze/ SF
//                  / SCB/ SCF
//  Arguments   :   NULL
//  Return      :   TRUE
//  Side Effect :
//  ************************************************************************
BIT  MONITOR_CheckBuffer(void)
{
    // REPEAT AB flow
    // Set A poiint-> Set B point
    // check reaching B point->Play from A point->check reaching B point...
    if ( __bRepeatAB == REPEAT_AB )
    {
#ifdef  _WINDVD
        if (__wDiscType & BOOK_DVD) // DVD title is controled by CELL module
            return TRUE;
#endif  // #ifdef _WINDVD

        // If Current time already reach B point(__dwTimeB) must turn back
        // to play A point(__dwTimeA)
        //LJY1.22, LJY1.11b, update __dwTimeNow for repeatAB.
        UTL_GetCurrentTime(); 
//LJY1.22, LJY1.11b, LJY1.21, fix VCD repeatAB time incorrect issue for anti-shock mode, need to re-calculate __dwTimeNow due to enlarged buffer.
        //LJY1.24a, using UTL_EstimateBufferTime() for code refinement.        
        __dwTemp = UTL_EstimateBufferTime();            

        if((__dwTimeNow - __dwTemp) >= __dwTimeB)
        {
            // must jump data back to A point
            // the action is the same as GOTOTIME
            __dwGoToTime=__dwTimeA;
            __btNewTime=TRUE;   // flag indicate that need perform GOTOTIME
        }   // end checking B point
    }   // if ( __bRepeatAB == REPEAT_AB )

    // next play must play from __dwGoToTime
    if (__btNewTime)    // GOTOTIME or REPEAT AB B->A
    {

        //DVD_049MickyGoTime
        // the reset point shall be before starting A point
        _Play_TimeA();
    }   // End of if (__btNewTime)
    // wyc1.21, Update CoCo's code for C3 retry.
    //CoCo.C3-retry
#if defined(SUPPORT_JPEG_C3) || defined(SUPPORT_MP3_C3)
    if (W99AV_GetPSRDW() & INT_AINT)
    {
        //this sector have bad bits that C3 cannot fix and DSP will enter an infinite loop
        //F/W needs to resend bitstream and set dm(crc_sync_en)[6] to zero and then DSP can exit an infinite loop
        W99AV_ReadDM(W99AV_DM_CRC_ENABLE, &__dwTemp);
        if (__dwTemp & 0x40)
        {
            __bC3Retry = TRUE;
            
            HAL_CheckCDIFbyISR(HAL_CDIF_FREEZE_TIME, 0);
            __dwIER &= ~INT_AINT;
        }
    }
    if ((__bC3Retry) && (!__bDVDROM))
    {
        if ((__bAttrPlay == ATTR_MP3) || (__bAttrPlay == ATTR_JPG) || (__bAttrPlay == ATTR_MP2))
        {
            //Get the wrong M,S,F from DM (reported by DSP)
            W99AV_ReadDM(W99AV_DM_HEADER_MIN, &__dwTemp);
            __bMin = (BYTE)__dwTemp;
            W99AV_ReadDM(W99AV_DM_HEADER_SEC, &__dwTemp);
            __bSec = (BYTE)__dwTemp;
            W99AV_ReadDM(W99AV_DM_HEADER_SECTOR, &__dwTemp);
            __bFrame = (BYTE)__dwTemp;
                 
            __bMin= COMUTL_BCDtoDecimal ( __bMin );
            __bSec= COMUTL_BCDtoDecimal ( __bSec );
            __bFrame= COMUTL_BCDtoDecimal ( __bFrame );
            
            //clear bit 6 to let DSP leave the inifinite loop.
            W99AV_ReadDM(W99AV_DM_CRC_ENABLE, &__dwTemp);
            __dwTemp &= 0xFFFFFFBF; //clear bit 6
            W99AV_WriteDM(W99AV_DM_CRC_ENABLE, __dwTemp);

            // convert the MSF value into HSG
            __dwC3ResendSector = COMUTL_MSFtoHSG (MAKE_MSF(__bMin, __bSec, __bFrame));

            // Jump to new time, and open CD-IF
            if ((__dwC3ResendSector >= __dwTimeBegin ) && (__dwC3ResendSector <= __dwTimeEnd))
            {            
                if (!UTL_PlayFromTime (__dwC3ResendSector))
                {
                    SERVO_ReadSectors (__dwC3ResendSector - __dwTimeTorelence, __dwTimeEnd);
                    HAL_ControlCDIF(HAL_CDIF_OPEN);
                }

#ifdef _DEBUG_INFO
		    __dwC3RetryTimes++;
#endif
            }
                       
            __bC3Retry = FALSE;
        }
    }
#endif

//LJY2.30a, for checking AO in ISR
#ifdef CHECK_OVERFLOW_IN_ISR
            if(__bAudioOverflow)
            {
                W99AV_ReadInfo ( W99AV_INFO_AUDIO_REMAIN , &_dwMONITORTemp );                
                if(_dwMONITORTemp < __dwAOBuffer) //LJY2.33, reference __dwAOBuffer instead of __dwAUBuffer
                {
		    EX1 = 0 ;   //LJY2.33, move EX1=0 here             	
                    __bAudioOverflow = FALSE;                    
                    W99AV_ClearInterrupt(INT_AO);      
                    //EX1 = 0;                                      
                    __dwIER |= (INT_AO);  
                    W99AV_EnableInterrupt(__dwIER);
                    EX1 = 1 ;                   
                }
            }
#endif

    // monitor buffer fullness/ empty procedure
    switch ( __bModeCmd )
    {
        // ** S-TCH;
        // must check if CD-IF is closed when buffer underflow interrupt
        // occurred, then re-open CD-IF
    // wyc.275-PicCD, add KEY_STOP in this switch and make KEY_STOP in thumbnail mode to do buffer control.
    case    KEY_STOP:
    case    KEY_FF:
    case    KEY_PLAY :
    case    KEY_SF :
        // Micky2.78, fix VCD Step will hang and picture uncomplete(28C only)
        // Found on title "Christmas Song", several steps(>60~70) will hang at UV ready
        // modify the Step buffer control to be done by MONITOR_CheckBuffer.
    case    KEY_STEP:

        // TCC277a, must re-enable servo running because SF cmd will close it.
        // TCC278, add check KEY_STEP here as Micky moved the check here.
        if ( __bServoAutoCtrl && (__bModeCmd==KEY_SF ||__bModeCmd==KEY_STEP ))
        {
            HAL_ControlCDIF(HAL_CDIF_OPEN); // ** TCH0.48P;
            break;
        }
        // wyc.275e __bJPGVar BIT1 TRUE means play end.
        // wyc2.85, rename to __bJPGVar
        if (__bJPGVar & UTL_JPG_SMALL_SIZE) 
            __btPlayEnd = TRUE;
        // wyc.275-PicCD, add KEY_STOP in this switch and make KEY_STOP in thumbnail mode to do buffer control.
        //LJY277.3rd, enable checking for DIGEST mode
        if ((__bModeCmd == KEY_STOP) && (!__bThumbnailMode) 
#ifndef NO_DIGEST //LJY1.20, support 4M flash, remove digest            
            && (!__btDIGEST)
#endif            
            )
        //if ((__bModeCmd == KEY_STOP) && (!__bThumbnailMode))
            break;
        //DVD_046-1DVD_IF
        if ( __bServoAutoCtrl)
            break;

        //DVD021, MICKY: in pause/ play_end, do not need open CD-IF
        if (__btPause || __btPlayEnd)
            break;

        // Chuan 278 2002/10/23: Check DVDCTLR[0] = 1, specified sector MSF found flag.