aud_post_process.c

最新MTK手机软件源码

        /* Stop 3D effect before using time stretch */
        aud_3d_pause_effect();

        /* Set time stretch mode and turn on it */
        ts_result = AudioPP_SetTS(mode);

        if (ts_result == MEDIA_SUCCESS)
        {
            aud_app_cntx_p->state_stretch = AUD_EFFECT_ON;
            set_result = MED_RES_OK;
        }
        else
        {
            set_result = MED_RES_FAIL;

            /* resume 3D effect because time stretch set fail */
            aud_3d_resume_effect();
        }
    }
    /* Unsupport speed mode */
    else
    {
        set_result = MED_RES_PARAM_ERROR;
    }

    return set_result;
}


/*****************************************************************************
 * FUNCTION
 *  aud_stretch_close_req_hdlr
 * DESCRIPTION
 *  This function is the request handler of turning off play speed and play as normal speed
 * PARAMETERS
 *  void
 * RETURNS
 *  void
 *****************************************************************************/
void aud_stretch_close_req_hdlr(void)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    aud_stretch_close();

    aud_app_set_result(MED_RES_OK);
    EFFECT_SET_EVENT(TS_EVT_CLOSE);
}


/*****************************************************************************
 * FUNCTION
 *  aud_stretch_close
 * DESCRIPTION
 *  This function is the interface of turning off play speed for media task
 * PARAMETERS
 *  void
 * RETURNS
 *  void
 *****************************************************************************/
void aud_stretch_close(void)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (aud_app_cntx_p->state_stretch == AUD_EFFECT_ON)
    {
        AudioPP_CloseTS();
    }

    /* resume 3D effect if is is on */
    aud_3d_resume_effect();

    aud_app_cntx_p->state_stretch = AUD_EFFECT_OFF;
}


/*****************************************************************************
 * FUNCTION
 *  aud_stretch_get_mode_from_speed
 * DESCRIPTION
 *  This function is to convert play speed to the mode provide by l1 audio
 * PARAMETERS
 *  speed       [IN]        
 * RETURNS
 *  void
 *****************************************************************************/
static kal_uint16 aud_stretch_get_mode_from_speed(kal_uint16 speed)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
    kal_uint16 mode = 0;

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    switch (speed)
    {
        case 50:
            mode = 1;
            break;
        case 80:
            mode = 2;
            break;
        case 125:
        case 128:
            mode = 3;
            break;
        case 160:
            mode = 4;
            break;
        default:
            break;
    }

    return mode;
}


/*****************************************************************************
 * FUNCTION
 *  aud_3d_set_coeff_req_hdlr
 * DESCRIPTION
 *  This function is to set the 3D effect coefficient
 * PARAMETERS
 *  ilm_ptr     [?]     
 * RETURNS
 *  void
 *****************************************************************************/
void aud_3d_set_coeff_req_hdlr(ilm_struct *ilm_ptr)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
    media_3d_set_coeff_req_struct *msg_p;

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    msg_p = (media_3d_set_coeff_req_struct*) ilm_ptr->local_para_ptr;

    AudioPP_Set3D(msg_p->coeff_table_ptr);

    /* First time set parameter. If not first time set, keep current state */
    if (aud_app_cntx_p->state_3d == AUD_EFFECT_UNSET)
    {
        aud_app_cntx_p->state_3d = AUD_EFFECT_OFF;
    }

    aud_app_set_result(MED_RES_OK);
    EFFECT_SET_EVENT(A3D_EVT_SET);
}


/*****************************************************************************
 * FUNCTION
 *  aud_3d_turn_on_effect_req_hdlr
 * DESCRIPTION
 *  This function is to turn on 3D sound effect
 * PARAMETERS
 *  void
 * RETURNS
 *  void
 *****************************************************************************/
void aud_3d_turn_on_effect_req_hdlr(void)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
    Media_Status result;

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    /* Parameter is not set */
    if (aud_app_cntx_p->state_3d == AUD_EFFECT_UNSET)
    {
        aud_app_set_result(MED_RES_FAIL);
    }
    /* Already turn on, call L1 fuction again to apply new parameter */
    else if (aud_app_cntx_p->state_3d == AUD_EFFECT_ON)
    {
        result = AudioPP_TurnOn3D();
        aud_app_set_result((kal_int32) aud_get_res((kal_uint8) result));

        if (result != MEDIA_SUCCESS)
        {
            aud_app_cntx_p->state_3d = AUD_EFFECT_OFF;
        }
    }
    /* Parameter is already set but not turn on or being interrupted by time stretch feature. */
    else if (aud_app_cntx_p->state_3d == AUD_EFFECT_OFF || aud_app_cntx_p->state_3d == AUD_EFFECT_INT)
    {
        /* If time stretch is on, change state to interrupt, and resume when time stretch close */
        if (aud_app_cntx_p->state_stretch == AUD_EFFECT_ON)
        {
            aud_app_cntx_p->state_3d = AUD_EFFECT_INT;
            aud_app_set_result(MED_RES_OK);
        }
        else
        {
            result = AudioPP_TurnOn3D();
            aud_app_set_result((kal_int32) aud_get_res((kal_uint8) result));

            aud_app_cntx_p->state_3d = AUD_EFFECT_ON;
        }
    }
    else
    {
        ASSERT(KAL_FALSE);
    }

    EFFECT_SET_EVENT(A3D_EVT_ON);
}


/*****************************************************************************
 * FUNCTION
 *  aud_3d_turn_off_effect_req_hdlr
 * DESCRIPTION
 *  This function is to turn off 3D sound effect
 * PARAMETERS
 *  void
 * RETURNS
 *  void
 *****************************************************************************/
void aud_3d_turn_off_effect_req_hdlr(void)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (aud_app_cntx_p->state_3d == AUD_EFFECT_ON)
    {
        AudioPP_TurnOff3D();
    }

    /* If 3D effect is not set, do not change its state. */
    if (aud_app_cntx_p->state_3d != AUD_EFFECT_UNSET)
    {
        aud_app_cntx_p->state_3d = AUD_EFFECT_OFF;
    }

    aud_app_set_result(MED_RES_OK);
    EFFECT_SET_EVENT(A3D_EVT_OFF);
}


/*****************************************************************************
 * FUNCTION
 *  aud_3d_pause_effect
 * DESCRIPTION
 *  This function is to pause 3D sound effect when turn on time stretch
 * PARAMETERS
 *  void
 * RETURNS
 *  void
 *****************************************************************************/
static void aud_3d_pause_effect(void)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (aud_app_cntx_p->state_3d == AUD_EFFECT_ON)
    {
        /* Close audio 3D sound effect */
        AudioPP_TurnOff3D();

        aud_app_cntx_p->state_3d = AUD_EFFECT_INT;
    }
}


/*****************************************************************************
 * FUNCTION
 *  aud_3d_resume_effect
 * DESCRIPTION
 *  This function is to resume 3D sound effect when turn off time stretch
 * PARAMETERS
 *  void
 * RETURNS
 *  void
 *****************************************************************************/
static void aud_3d_resume_effect(void)
{
    /*----------------------------------------------------------------*/
    /* Local Variables                                                */
    /*----------------------------------------------------------------*/
    Media_Status result;

    /*----------------------------------------------------------------*/
    /* Code Body                                                      */
    /*----------------------------------------------------------------*/
    if (aud_app_cntx_p->state_3d == AUD_EFFECT_INT)
    {
        /* Turn on audio 3D sound effect after time stretch finish */
        result = AudioPP_TurnOn3D();

        if (result == MEDIA_SUCCESS)
        {
            aud_app_cntx_p->state_3d = AUD_EFFECT_ON;
        }
        else
        {
            aud_app_cntx_p->state_3d = AUD_EFFECT_OFF;
        }
    }
}

#endif /* __MED_APP_MOD__ */ 

#endif /* MED_NOT_PRESENT */