+
−/**
+
− * @file	tut_api.c
+
− *
+
− * API for TTY SWE.
+
− *
+
− * @author	Frederic Turgis (f-turgis@ti.com) & Gerard Cauvy (g-cauvy@ti.com)
+
− * @version 0.1
+
− */
+
−
+
−/*
+
− * History:
+
− *
+
− * 	Date       	Modification
+
− *  ------------------------------------
+
− *  01/27/2003	Create
+
− *
+
− * (C) Copyright 2003 by Texas Instruments Incorporated, All Rights Reserved
+
− */
+
−
+
−#ifndef _WINDOWS
+
−  #include "config/l1sw.cfg"
+
−#endif
+
−
+
−#include "tty/tty_i.h"
+
−
+
−#include "tty/tty_api.h"
+
−#include "audio/audio_structs_i.h"
+
−#include "audio/audio_const_i.h"
+
−
+
−/* External declaration */
+
−extern T_AUDIO_ENV_CTRL_BLK* p_audio_gbl_var;
+
−
+
−/********************************************************************************/
+
−/*                                                                              */
+
−/*    Function Name:   audio_tty_set_config                                     */
+
−/*                                                                              */
+
−/*    Purpose:  This function is called to configure TTY. Currently, only       */
+
−/*              supports start and stop                                         */
+
−/*                                                                              */
+
−/*    Input Parameters:                                                         */
+
−/*        TTY configuration                                                     */
+
−/*        Return path.                                                          */
+
−/*                                                                              */
+
−/*    Output Parameters:                                                        */
+
−/*         Validation of the parameters.                                        */
+
−/*                                                                              */
+
−/*    Note:                                                                     */
+
−/*        None.                                                                 */
+
−/*                                                                              */
+
−/*    Revision History:                                                         */
+
−/*        None.                                                                 */
+
−/*                                                                              */
+
−/********************************************************************************/
+
−T_AUDIO_RET audio_tty_set_config (T_AUDIO_TTY_CONFIG_PARAMETER *parameter, T_RV_RETURN *return_path)
+
−{
+
−  #if (L1_GTT == 1)
+
−    /* Declare local variables. */
+
−    T_RVF_MB_STATUS   mb_status = RVF_GREEN;
+
−    T_RV_HDR *p_msg = NULL;
+
−
+
−    /************************ audio_tty_set_config function begins ******************/
+
−    if (p_audio_gbl_var == NULL )
+
−    {
+
−      TTY_SEND_TRACE("TTY: Error Audio SWE not started ",RV_TRACE_LEVEL_ERROR);
+
−      return(AUDIO_ERROR);
+
−    }
+
−
+
−    /* If bad parameters, then report an error and abort.*/
+
−    if ( (parameter->Mode != TTY_STOP)&&
+
−         (parameter->Mode != TTY_EXT_START))
+
−    {
+
−      TTY_SEND_TRACE("TTY: Error bad parameters ",RV_TRACE_LEVEL_ERROR);
+
−      return (AUDIO_ERROR);
+
−    }
+
−
+
−    switch (parameter->Mode)
+
−    {
+
−      case TTY_EXT_START:
+
−      {
+
−        /* allocate the memory for the message to send */
+
−        mb_status = rvf_get_buf (p_audio_gbl_var->mb_external,
+
−                                 sizeof (T_TTY_START),
+
−                                 (T_RVF_BUFFER **) (&p_msg));
+
−      }
+
−      break;
+
−      case TTY_STOP:
+
−      {
+
−        /* allocate the memory for the message to send */
+
−        mb_status = rvf_get_buf (p_audio_gbl_var->mb_external,
+
−                                 sizeof (T_TTY_STOP),
+
−                                 (T_RVF_BUFFER **) (&p_msg));
+
−      }
+
−      break;
+
−    }
+
−
+
−    /* If insufficient resources, then report a memory error and abort. */
+
−    if (mb_status == RVF_YELLOW)
+
−    {
+
−      /* deallocate the memory */
+
−      rvf_free_buf((T_RVF_BUFFER *)p_msg);
+
−      TTY_SEND_TRACE("TTY: Not Enough Memory (Yellow!) ",RV_TRACE_LEVEL_ERROR);
+
−      return (AUDIO_ERROR);
+
−    }
+
−    else
+
−    if (mb_status == RVF_RED)
+
−    {
+
−      TTY_SEND_TRACE("TTY: Not Enough Memory (Red!) ",RV_TRACE_LEVEL_ERROR);
+
−      return (AUDIO_ERROR);
+
−    }
+
−
+
−    /* fill the message id + parameters */
+
−    switch (parameter->Mode)
+
−    {
+
−      case TTY_EXT_START:
+
−        p_msg->msg_id = TTY_START_REQ;
+
−
+
−        if (return_path->callback_func == NULL)
+
−        {
+
−          ((T_TTY_START *)p_msg)->return_path.addr_id = return_path->addr_id;
+
−          ((T_TTY_START *)p_msg)->return_path.callback_func = NULL;
+
−        }
+
−        else
+
−        {
+
−          ((T_TTY_START *)p_msg)->return_path.callback_func = return_path->callback_func;
+
−        }
+
−      break;
+
−      case TTY_STOP:
+
−        p_msg->msg_id = TTY_STOP_REQ;
+
−      break;
+
−    }
+
−
+
−    /* fill the address source id */
+
−    p_msg->src_addr_id = rvf_get_taskid();
+
−    p_msg->dest_addr_id = p_audio_gbl_var->addrId;
+
−
+
−    /* send the messsage to the audio entity */
+
−    rvf_send_msg (p_audio_gbl_var->addrId, p_msg);
+
−
+
−    return (AUDIO_OK);
+
−
+
−  #else // L1_GTT
+
−
+
−    TTY_SEND_TRACE("TTY API not available ", RV_TRACE_LEVEL_ERROR);
+
−    return (AUDIO_ERROR);
+
−
+
−  #endif
+
−}