/*------------------------------------------------------------------------  Function:av_play_pause   Description:      This function will pause the playing section.------------------------------------------------------------------------*/int av_play_pause(){#if 0 /* conflicts with "wait_pause" mechanism in play.c */    if (video_state == VIDEO_SLOW_MOTION) {	av_play_resume();	set_pause = 1;	return;    } else if ((video_state == VIDEO_FF) || (video_state == VIDEO_FR)) {	av_play_resume();	set_pause = 1;    	vcx_playvideo_only = 1; /* Mute the audio until pause */	av_timeout = glbTimer + HALF_SECOND;	video_state = VIDEO_WAIT_TIMEOUT;	return;    }#else    reset_video_normal_mode(vcx_playaudio_only);#endif    if (data_type == AUDIO_DATA_TYPE) {	video_state = AUDIO_PAUSE;#ifdef ANTI_SHOCK	previous_sector = buffered_currCDtime();#endif	TDM_force_stop(1);/* Simply turn off XPORT to stop more data coming */	/* Kill TDM so when we restart, left/right will not swap	*/	mvd[tdmctl0] = 0x400;	mvd[tdmrcvslots0] = 0;    } else {	/* stop the TDM */	    	if (XPORT_active) {	    /* Stop TDM/DMA and save the last location */	    turn_off_data();	}#if( defined(MP3) || defined(WMA_DEC) )	if ((STREAM_type == MP3_ID)#ifdef WMA_DEC             || (STREAM_type == WMA_ID)#endif            ) {	    if( !av_in_trick_mode ) {		av_in_trick_mode = 1;		previous_sector = MP3_currCDtime();	    }	    currCDtime = stopCDtime = previous_sector; /* for real-time */	} else#endif /* MP3 || WMA */	{	    previous_sector = stopCDtime;	    vcx_pause = 1; /* only for video (mpeg1 stream) */	}	#if (defined(GAMMA) || defined(FLESHTONE))        if((picture_type == 0xe0) #ifdef MZOOM	   && !vcx_mzoom#endif	   && !STREAM_type) {            Gamma_Correction_main();        }#endif	video_state = VIDEO_PAUSE;	oh_my(0xe);    }    /*     * For audio CD, we need to pause it first before calling     * system_audio_partial_reset. Therefore, calling dsa_pause is     * essential for CDDA. It doesn't hurt to call dsa_pause for     * video CD (and may even be essential for some targets.     *     * NOTE:      *  - we are resetting PCM for non-video pause.     *  - no system_audio_partial_reset() for VCD anti-shock..     *    resetting ABV will "unsync" AV-sync.      */    dsa_pause();#ifdef ANTI_SHOCK    if (TDM_isCDDA || (vcx_bitstream_type != MPEG1_PS)) #endif    {    	system_audio_partial_reset(!vcx_pause);     }    cd_pause = 1;    return (1);}/*------------------------------------------------------------------------  Function: av_play_resume  Description:      This function will take the player from trick mode to normal      mode.      trick mode includes FF/FR, slow motion, step and pause.------------------------------------------------------------------------*/int av_play_resume(){    if (video_state == VIDEO_SLOW_MOTION) {	system_audio_partial_reset(0);	/* Fix audio break. */    } else if (video_state == VIDEO_PAUSE || video_state == VIDEO_STEP) {	reset_video_normal_mode(0);     } else {    	reset_video_normal_mode(1);    }	    switch (video_state) {    case VIDEO_SLOW_MOTION:	DISP_limit = 1;	reset_video_normal_mode(0);	/* finish up playSectors() here instead of background 	 * to speed up slow->play transition.	 */	if (!XPORT_active) 	    playSectors(previous_sector, vcx_user_video_stream, 0);	break;    case VIDEO_FF:    case VIDEO_FR:	clear_dec();	playSectors(previous_sector, vcx_user_video_stream, 2324);        break;    case AUDIO_FF:    case AUDIO_FR:#ifdef ANTI_SHOCK	PLAY_set_2x_speed = 1; /* fill ABV faster at 2X speed */#endif	playCDDA(cdda_track_start_time, previous_sector, endCDtime);	break;    case VIDEO_PAUSE:    	oh_my(0xd);#if( defined(MP3) || defined(WMA_DEC))        if ((STREAM_type == MP3_ID)#ifdef WMA_DEC             || (STREAM_type == WMA_ID)#endif            ) {            clear_dec();            /* since in MP3 when we pause there is still               a lot of data has not been processed,               "previous_sector" has been adjusted               back to resume play */#ifdef WMA_DEC            if(STREAM_type == WMA_ID)                wma_seek_size = (msf2sectors(previous_sector) -                    msf2sectors(play_item_begin_time))<<11;#endif            playSectors(previous_sector, vcx_user_video_stream, 2324);        } else#endif	playSectors(stopCDtime, picture_type, 2324);	break;    case AUDIO_PAUSE:#ifdef ANTI_SHOCK	PLAY_set_2x_speed = 1; /* fill ABV faster at 2X speed */	playCDDA(cdda_track_start_time, previous_sector, endCDtime);#else	/* 	 * Don't use 	 * playCDDA(cdda_track_start_time, previous_sector, endCDtime);	 * Due to DSA in-precision, we may stuck at the same place	 * continuously if we just pause/release.	 */	XPORT_restart_at(XPORT_OFFSET_PLAY_CDDA, 1);	TDM_turn_on();#endif /* ANTI_SHOCK */#ifdef CXDSERVO	/* enable digital-out for CDDA play */	if (use_dig_out) CLEAR_SERVO_DIG_MUTE; #endif	break;    case VIDEO_STEP:	playSectors(previous_sector, 0xe0, 2324);	break;    }#ifdef MP3    if (vcx_bitstream_type == MP3_PS) video_state = MP3_NORMAL;    else#endif#ifdef WMA_DEC    if (STREAM_type == WMA_ID) video_state = MP3_NORMAL;    else#endif    if (TDM_isCDDA) {#ifdef ANTI_SHOCK	video_state = AUDIO_ESP;#else	video_state = AUDIO_NORMAL;#endif ANTI_SHOCK    } else#ifdef ABNORMAL_VCD    if (abnormal_vcd)        video_state = VIDEO_ABNORMAL;    else#endif	video_state = VIDEO_INIT_STATE;    av_in_trick_mode = 0;    return (1);}/*------------------------------------------------------------------------  Function: av_play_slow_motion  Parameters:      field_length : The number of field time that a picture should be                     display. For a normal speed NTSC picture, the		     field_length is 2. If we want to make the slow		     motion to 1/2 speed of normal speed, we need to		     set field_length value to 4.  Description:      Plays slow motion.------------------------------------------------------------------------*/int av_play_slow_motion(int field_length){    reset_video_normal_mode(vcx_playaudio_only);    vcx_pause = 0;    vcx_slow_motion = field_length;    vcx_playvideo_only = 1;    if (video_state == VIDEO_PAUSE) {	playSectors(previous_sector, 0xe0, 2324);    }    video_state = VIDEO_SLOW_MOTION;}/*------------------------------------------------------------------------  Function:av_play_step  Description:      When this function is called, the player will display a new       decoded picture.------------------------------------------------------------------------*/int av_play_step(){    if (video_state != VIDEO_STEP) {	vcx_pause = 0;	vcx_slow_motion = vcx_fast_forward = 0;	vcx_stepmode = 1;	vcx_playvideo_only = 1;	if (XPORT_active)	    vcx_step_advance = 1;	else	    vcx_step_advance = 0;	video_state = VIDEO_STEP;	if (cd_pause) {	    dsa_pauserelease();	    cd_pause = 0;	}    } else {	if (vcx_step_advance == 0) {	    int space_left;	    vcx_step_advance = 1;	    /* To avoid VBV buffer overflow, we won't start copying data *	     * if there is enough data in buffer */	    VBV_update_occupancy(space_left);	    space_left = VBV_size - space_left;	    if (space_left > 2000) { 	    	playSectors(previous_sector, 0xe0, 2324);            } 	}    }    return (1);}#ifdef MULTI_EXT_FILEint av_play_continue(int start_mmssff, int end_mmssff){    /* set relative variables */    endCDtime = end_mmssff;    end_of_play = 0;    av_in_trick_mode = 0;    #ifdef MP3    if (vcx_bitstream_type == MP3_PS) {	video_state = MP3_NORMAL;    }#endif /* MP3 */#ifdef WMA_DEC    if (STREAM_type == WMA_ID) {	video_state = MP3_NORMAL;    	wma_seek_size =( msf2sectors(start_mmssff) -         	msf2sectors(play_item_begin_time) )<<11;    	if ( wma_byterate )            wma_smpl_num = wma_seek_size/wma_byterate * sample_rate[wma_freq];    }#endif /*WMA_DEC*/#ifdef JPEG_DEC    /*     * For jpeg pictures, by the time we see endCDtime, we won't see EOR.     * We'll force a flush to kick out all the data.     */      if (is_jpeg == 1) {         TDM_needs_flush = 1;         video_state = JPEG_NORMAL;    }#endif    play_sector_state = PLAY_SECTOR_INIT;    playSectors_step_by_step(start_mmssff, vcx_user_video_stream, 2324, 1);    return (1);}#endif /* MULTI_EXT_FILE *//************************************************************************   Function: *************************************************************************/#if (defined WMA_DEC && !(defined WMA_DEMO))int AV_flush_audio(){    if (!(av_in_trick_mode||flush_thy_audio)) {         flush_thy_audio  = 2;         return 1;    }    return 0;}#endif/*------------------------------------------------------------------------  Function:  Parameters:  Description:------------------------------------------------------------------------*/static int play_fast_init(int secs, int end_mmssff){    int cd_time;    reset_video_normal_mode(1); /* clear other video/audio variables.*/        if (data_type == AUDIO_DATA_TYPE) {#ifdef FAST_MODE_CONTROL 	cd_time = ((servo_info & 0xffff) << 8);	/* when FR across track boundary, previous time has to be set differently */	if (video_state == AUDIO_FR && !servo_info)	    previous_sector = adjCDtime(endCDtime, 0x0200, -1);	else	    previous_sector = adjCDtime(cd_time, cdda_track_start_time, 1);#else#ifdef ANTI_SHOCK	previous_sector = buffered_currCDtime();#else	cd_time = ((servo_info & 0xffff) << 8);	previous_sector = adjCDtime(cd_time, cdda_track_start_time, 1);#endif#endif    } else {	vcx_fast_forward = 1; /*set before turn_off_data() & clear_dec()*/	if (XPORT_active) {	    /* Stop TDM/DMA and save the last location */	    turn_off_data();	}#if defined(MP3) || defined(WMA_DEC)	if ( (STREAM_type == MP3_ID) #ifdef WMA_DEC	     || (STREAM_type == WMA_ID)#endif	     ){	    if( !av_in_trick_mode ) {		av_in_trick_mode = 1;		previous_sector = MP3_currCDtime();	    }	    vcx_playaudio_only = 1;	/* audio mode */	} else#endif /* MP3 || WMA_DEC */	{    	    /* mpeg1 stream */	    previous_sector = stopCDtime;	    vcx_playvideo_only = 1;	/* mute mode */	}	    	clear_dec();    }    fast_speed_time_limit = end_mmssff;    vcx_fast_speed_done = 0;#ifdef MP3    if (STREAM_type == MP3_ID) {	skip_mmssff = MP3_time2sectors(bcd2hex[secs]);    } else#endif    #ifdef WMA_DEC    if (STREAM_type == WMA_ID) {        skip_mmssff = (wma_byterate * (bcd2hex[secs]))>>11;        skip_mmssff = logical2physical(skip_mmssff);    } else#endif#ifdef ABNORMAL_VCD    if (abnormal_vcd & TRACK_IS_ABVCD) {        skip_mmssff = msf2sectors(secs<<8) * 600 / mpeg_mux_rate;        skip_mmssff = logical2physical(skip_mmssff);    } else#endif 	skip_mmssff = secs<<8; /* mm:ss:ff format */    play_speed_start();}/*------------------------------------------------------------------------  Function: av_play_fast_forward  Parameters:      secs:	The jump time after an I frame is displayed. The format                is seconds in BCD.      end_mmssff: When the end_mmssff is played, the vcx_fast_speed_done                  variable will be set to 1. The called should check		  this variable and decide what to do.  Description:      This function will cause the decoder to a fast forward mode.------------------------------------------------------------------------*/int av_play_fast_forward(int secs, int end_mmssff){    video_state = (data_type == VIDEO_DATA_TYPE) ?  VIDEO_FF : AUDIO_FF;    play_fast_init(secs, end_mmssff); }/*------------------------------------------------------------------------  Function:  Parameters:      secs:	The jump time after an I frame is displayed. The format                is seconds in BCD.      end_mmssff: When the end_mmssff is played, the vcx_fast_speed_done                  variable will be set to 1. The called should check		  this variable and decide what to do.  Description:      This function will cause the decoder to a fast rewind mode.------------------------------------------------------------------------*/int av_play_fast_rewind(int secs, int end_mmssff){    video_state = (data_type == VIDEO_DATA_TYPE) ?  VIDEO_FR : AUDIO_FR;#ifdef FAST_MODE_CONTROL    /* FR across track boundary, play_start is the begin time of the current track */    play_start_time = end_mmssff; #endif    play_fast_init(secs, end_mmssff);}/*------------------------------------------------------------------------  Function:  Parameters:  Description:------------------------------------------------------------------------*/#ifdef MP3static int stop = 0;#endifvoid video_state_machine(){    int	space_left, aspace_left;    int video_buffer_fullness;    int audio_full = 0;    int video_full = 0;#ifdef MP3    int full = 0;    int space_byte_left;#endif#ifdef WMA_CERT    extern int MLP_dump;#endif    switch (video_state) {#if defined(ABNORMAL_VCD) || defined(ANTI_SHOCK)    case VIDEO_ABNORMAL:        if (TDM_expect_stop) {           if (XPORT_active) return;           TDM_expect_stop = 0;           previous_sector = stopCDtime;           play_sector_state = 0;           return;        }        VBV_update_space(space_left);        ABV_update_space(aspace_left);        audio_full = (aspace_left < 4*VBV_write);        video_full = (space_left < 8*VBV_write);        if (vcx_playvideo_only) full = video_full;        else        if (vcx_playaudio_only) full = audio_full;	else full = (video_full || audio_full);        if (XPORT_active) {     /* TDM is running */            if (full) {