headset_power.c

实现蓝牙立体声耳机功能。。可以接收并播放来自有蓝牙功能的手机

/****************************************************************************
Copyright (C) Cambridge Silicon Radio Ltd. 2004-2006
Part of BlueLab 3.6.2-release

FILE NAME
    headset_power.c        

DESCRIPTION
    Deals with powering the headset.

*/


/****************************************************************************
    Header files
*/
#include "headset_private.h"
#include "av_stream_control.h"
#include "headset_common.h"
#include "leds.h"
#include "headset_tones.h"
#include "headset_power.h"
#include "hfp_slc.h"

#include <stdlib.h>
#include <string.h>
#include <panic.h>
#include <pio.h>
#include <codec.h>
#include <ps.h>


#ifdef DEBUG_POWER
#define POWER_DEBUG(x) DEBUG(x)
#else
#define POWER_DEBUG(x) 
#endif


/**************************************************************************/
void headsetSetPowerState(headsetTaskData *app, power_state state)
{


/*  {
    power_state_off,
    power_state_off_charging,
    power_state_on,
    power_state_on_charging
   }power_state */

    POWER_DEBUG(("POWER: Set power state old = %d new = %d\n",app->headset_power_state, state));
    app->headset_power_state = state;
}

/**************************************************************************/
void headsetPowerOn(headsetTaskData *app)
{
#ifdef SOFT_POWER
    /* Hold power on */
    PioSetDir(POWER_HOLD, POWER_HOLD);
    PioSet   (POWER_HOLD, POWER_HOLD);
#endif
	
    MessageCancelAll(&app->task, APP_POWER_ON_EVENT_SEEN) ;

    POWER_DEBUG(("POWER: ***ON***\n")) ;
	
	      /*Indicate the Power on event*/
    ledsPlay( BLUE_TWO_FLASHES ) ;
	headsetPlayTone(app, tone_type_power_on); 
        /* Call the function that will enable page scanning*/
    updateHeadsetScanning(app);
}
/**************************************************************************/
void headsetPowerOff ( headsetTaskData *app )
{
    POWER_DEBUG(("POWER: PowerOff\n")) ;
  
    if (app->headset_power_state == power_state_off )
    {
        /*then physically power down the device*/
        	
        POWER_DEBUG(("POWER: ***OFF***\n")) ;
    
            /* Power down the codec */
        CodecPowerDown(app->codec_task);

            /* Store the current volume */
        (void) PsStore(VOLUME_LEVEL, &app->speaker_volume, sizeof(app->speaker_volume));
	
            /* Cancel messages we may have queued */
	    MessageCancelAll(getAppTask(), APP_MUSIC_RESTART_IND);
        MessageCancelAll(getAppTask(), APP_HFP_SLC_REQ);
        MessageCancelAll(getAppTask(), APP_HFP_SLC_TIMEOUT_IND);
		MessageCancelAll(getAppTask(), APP_AUTO_SWITCH_OFF_IND); 
		MessageCancelAll(getAppTask(), APP_PAIR_MODE_END_IND);
    
            /* Call the function that will disable page scanning*/
    	updateHeadsetScanning(app);

            /* Finally turn off audio supply if it's still active */    
        headsetPowerAmp(app, FALSE);
    
#ifdef SOFT_POWER
		if (!app->charger_connected)
        	PioSet(POWER_HOLD,0);
#endif
	
    }
    else /*close any active links and schedule the power down again for later*/
    {
        POWER_DEBUG(("POWER: Schedule OFF\n")) ;
        
        headsetSetPowerState ( app , power_state_off ) ;
        
            /*indicate the power off event*/
        ledsPlay( BLUE_TWO_FLASHES ) ;
        ledsPlay(LEDS_OFF) ; 
        headsetPlayTone(app, tone_type_power_off); 
        
          /* Close down any active AV link */
        if ( (app->a2dp_state == avHeadsetA2dpConnected) || 
             (app->a2dp_state == avHeadsetA2dpStreaming) || 
             (app->a2dp_state == avHeadsetA2dpSignallingActive))
        {
            A2dpCloseAll(app->a2dp);
        }
            /* Close down any active AVRCP link */
        if (app->avrcp_state == avHeadsetAvrcpConnected)
        {
            AvrcpDisconnect(app->avrcp);
        }
  
            /* Close down any active AG link */
        if ( (app->hfp_state != headsetInitialising) && 
             (app->hfp_state != headsetReady))
        {
            hfpHeadsetDisconnectSlc(app);
        }
        
        MessageCancelAll(getAppTask(), APP_POWER_OFF_IND );        
        MessageSendLater(getAppTask(), APP_POWER_OFF_IND, 0, (uint32) 5000);    
    }
}

/**************************************************************************/
void headsetPowerAmp(headsetTaskData *app, bool enable)
{
    if (enable)
    {		
		SET_AMP(AUDIO_AMP_LINE);
		
		MessageCancelAll ( getAppTask() , APP_AMP_IDLE_IND ) ;
    	MessageSendLater(getAppTask(), APP_AMP_IDLE_IND, 0, AMP_IDLE_TIMER);
    }
    else
    {   
		SET_AMP(0);
     	MessageCancelAll ( getAppTask() , APP_AMP_IDLE_IND ) ;
	}
}


/**************************************************************************/
void headsetPowerCheckAutoOff(const headsetTaskData *app)
{
    if (app->features.auto_switch_off_enabled && 
        (app->features.auto_switch_off_timeout != 0) &&
        ((app->headset_power_state == power_state_on) || (app->headset_power_state == power_state_on_charging)))
    {
        POWER_DEBUG(("POWER: Cancel auto power off\n"));
        MessageCancelAll(getAppTask(), APP_AUTO_SWITCH_OFF_IND);        
        if ((app->hfp_state == headsetReady) && (app->a2dp_state == avHeadsetA2dpReady))
        {
            POWER_DEBUG(("POWER: Auto power off in %d secs\n",app->features.auto_switch_off_timeout));
            MessageSendLater(getAppTask(), APP_AUTO_SWITCH_OFF_IND, 0, D_SEC(app->features.auto_switch_off_timeout));            
        }
    }
}