am_dspr.cc

来自「Motorola synergy audio component」· CC 代码 · 共 119 行

/* (c) Copyright Motorola 1996, 1998, All rights reserved.
   Motorola Confidential Proprietary
   Contains confidential proprietary information of Motorola, Inc.
   Reverse engineering is prohibited.
   The copyright notice does not imply publication.

   DESCRIPTION:
      This file contains the main audio task.

 *************** REVISION HISTORY *********************************************

   Date       Author      Reference
   ========   ========    ==========================
   00-12-21   mtaraba     CSGce82934
              main_comp_hardware.h within engine_audio vob should be removed

   00-08-09   mtaraba     CR - CSGce55882
              Eliminate file gsm.h from audio manager

   00-01-05   wchoi       CR - CSGce39480
                          CR - CSGce39558
              -changed references from TDPrimitive & to void *
              
   9912-12    ktang       CR - CSGce42434
              Common Tone Generator MDI Messages
              - Modified the function AM_DSPR_receive_primitives so it deals
                with all primitives uniformly.

   99-08-09   jvoss       CR - CSGce34013
              GRiEF:Change all Audio Executive Function Calls to use SUAPI
              - Created a griefaudio hardware mainline and merged in panther_vc0.00.02.
              - Temporarily commented out Timer related code as it is not yet supported in this phase.

   98-11-10   blamers     CR - CSGce23508
              Whitecap VR Audio Event Handler Changes
              - The primitive ID used for unparsed DSP data will be handled by
                using its own parse method.

   98-09-14   blamers     CR - CSGce17243
              Whitecap VA Audio Event Handler Changes
              - In previous designs the Audio manager has always been awakened
                by a primitive. Lead API commands must be read from a control
                queue defined in the MCU_DSP API.
*/
/************** INCLUDE FILES ************************************************/
#include <SUAPI/suapi.h>
#include <stddef.h>
#include <audio/am_server_task.h>
#include <audio/AM_Event_Handler.H>
#include <audio/am_dspr.h>
#include <audio/AM_Timer_Container.H>
#include <ENGINE_AUDIO/am_c_utilities.h>

/************** LOCAL CONSTANTS ***********************************************/

/************** LOCAL STRUCTURES, ENUMS, AND TYPEDEFS *************************/

/************** LOCAL FUNCTION PROTOTYPES *************************************/

/************** LOCAL MACROS **************************************************/

/************** LOCAL VARIABLES ***********************************************/

/************** FUNCTION DEFINITIONS ******************************************/
/* DESCRIPTION:
       This function comprises the main Audio task.

   INPUTS:
       void

   OUTPUTS:
       void

   IMPORTANT NOTES:
       1. For whitecap modem replies must be removed from the API queue
*/
AM_Event_Handler * am_event_handler = NULL;
extern SU_TASK_HANDLE am_server_task_handle;
extern SU_EVNUM        am_server_msg_event_number;
extern SU_EVMASK       am_server_msg_event_mask;

void
AM_DSPR_receive_primitives(void)
{
    //    TD_Primitive_Header_RX incoming_prim;   
    SU_RET_STATUS err = 0;
    SU_EVMASK   events = 0;
    SU_EVMASK   ev_mask_search = 0;
    AM_Event_Handler AEH;
    am_timer_handler.Initialize();
    am_event_handler = &AEH;  // very bad form, but time is of the essence. I need access to the event handler outside of this function
                              // granted its a stack variable, but it never goes out of scope..... My apologiess.....


    ev_mask_search = am_timer_handler.GetEventMask() | am_server_msg_event_mask | am_event_mask;
    suRegisterEventMaskWithQueue(am_server_task_queue, am_server_task_handle, am_server_msg_event_mask, &err);


    while(1)
    {
        events =  suWaitAnyEventMask(ev_mask_search, SU_WAIT_FOREVER,  &err);
        
        // Wait for either event
        am_timer_handler.HandleEvents(events);

        if(events & am_server_msg_event_mask)
        {
            void *msg = NULL;
            while((msg = suReceiveMessageFromQueue(am_server_task_queue, SU_NOWAIT, NULL)) !=  NULL)
            {      
                 if (am_event_handler->handle_primitive(msg) != PRIM_STAT_NO_DELETE)
                 {
                     suDeleteMessage(msg,NULL);
                 }
             }
         }
    }
}