+
−/****************************************************************************/
+
−/*                                                                          */
+
−/*  File Name:  tty.c                                                       */
+
−/*                                                                          */
+
−/*  Purpose:  This file contains all the functions used to manage the       */
+
−/*            TTY feature.                                                  */
+
−/*                                                                          */
+
−/*  Version   0.1                                                           */
+
−/*                                                                          */
+
−/*  Date        Modification                                                */
+
−/*  ------------------------------------                                    */
+
−/*  18 Jan 2003 Create                                                      */
+
−/*                                                                          */
+
−/*  Author                                                                  */
+
−/*     Frederic Turgis                                                      */
+
−/*                                                                          */
+
−/* (C) Copyright 2003 by Texas Instruments Incorporated, All Rights Reserved*/
+
−/****************************************************************************/
+
−
+
−#ifndef _WINDOWS
+
−  #include "config/l1sw.cfg"
+
−#endif
+
−
+
−#if (L1_GTT == 1)
+
−
+
−  #include "tty/tty_api.h"
+
−  #include "tty/tty_i.h"
+
−
+
−  #include "rv/rv_general.h"
+
−  #include "rvf/rvf_target.h"
+
−
+
−  #include "l1gtt_signa.h"
+
−  #include "audio/audio_structs_i.h"
+
−  #include "audio/audio_const_i.h"
+
−
+
−  /* extern variables & prototypes */
+
−
+
−  extern T_TTY_ENV_CTRL_BLK *tty_env_ctrl_blk_p;
+
−  extern T_AUDIO_ENV_CTRL_BLK *p_audio_gbl_var;
+
−
+
−  extern void    *audio_allocate_l1_message (UINT16 size);
+
−  extern T_RV_RET audio_send_l1_message     (INT16 message_id, void *message);
+
−
+
−  /********************************************************************************/
+
−  /*                                                                              */
+
−  /*    Function Name:   tty_send_status                                          */
+
−  /*                                                                              */
+
−  /*    Purpose:  This function sends the TTY status to the entity.               */
+
−  /*                                                                              */
+
−  /*    Input Parameters:                                                         */
+
−  /*        status,                                                               */
+
−  /*        return path                                                           */
+
−  /*                                                                              */
+
−  /*    Output Parameters:                                                        */
+
−  /*        None.                                                                 */
+
−  /*                                                                              */
+
−  /*    Note:                                                                     */
+
−  /*        None.                                                                 */
+
−  /*                                                                              */
+
−  /*    Revision History:                                                         */
+
−  /*        None.                                                                 */
+
−  /*                                                                              */
+
−  /********************************************************************************/
+
−  void tty_send_status (T_AUDIO_RET status, T_RV_RETURN return_path)
+
−  {
+
−    T_AUDIO_TTY_STATUS *p_send_message = NULL;
+
−    T_RVF_MB_STATUS mb_status = RVF_RED;
+
−
+
−    while (mb_status == RVF_RED)
+
−    {
+
−      /* allocate the message buffer */
+
−      mb_status = rvf_get_buf (p_audio_gbl_var->mb_external,
+
−                               sizeof (T_AUDIO_TTY_STATUS),
+
−                               (T_RVF_BUFFER **) (&p_send_message));
+
−
+
−      /* If insufficient resources, then report a memory error and abort. */
+
−      /* and wait until more ressource is given */
+
−      if (mb_status == RVF_RED)
+
−      {
+
−        TTY_SEND_TRACE("TTY: Not Enough Memory (Red!) ",RV_TRACE_LEVEL_ERROR);
+
−        rvf_delay(RVF_MS_TO_TICKS(1000));
+
−      }
+
−    }
+
−    /* fill the header of the message */
+
−    ((T_AUDIO_TTY_STATUS *)p_send_message)->os_hdr.msg_id = AUDIO_TTY_STATUS_MSG;
+
−
+
−    /* fill the status parameters */
+
−    ((T_AUDIO_TTY_STATUS *)p_send_message)->status = status;
+
−
+
−    if (return_path.callback_func == NULL)
+
−    {
+
−      /* send the message to the entity */
+
−      rvf_send_msg (return_path.addr_id, p_send_message);
+
−    }
+
−    else
+
−    {
+
−      /* call the callback function */
+
−      (*return_path.callback_func)((void *)(p_send_message));
+
−      rvf_free_buf((T_RVF_BUFFER *)p_send_message);
+
−    }
+
−  }
+
−
+
−  /********************************************************************************/
+
−  /*                                                                              */
+
−  /*    Function Name:   tty_manager                                              */
+
−  /*                                                                              */
+
−  /*    Purpose:  This function is called to manage TTY                           */
+
−  /*                                                                              */
+
−  /*    Input Parameters:                                                         */
+
−  /*        message                                                               */
+
−  /*                                                                              */
+
−  /*    Output Parameters:                                                        */
+
−  /*        None.                                                                 */
+
−  /*                                                                              */
+
−  /*    Note:                                                                     */
+
−  /*        None.                                                                 */
+
−  /*                                                                              */
+
−  /*    Revision History:                                                         */
+
−  /*        None.                                                                 */
+
−  /*                                                                              */
+
−  /********************************************************************************/
+
−  void tty_manager (T_RV_HDR *p_message)
+
−  {
+
−    /* Declare local variables. */
+
−    void *p_send_message;
+
−
+
−    /**************** tty_manager function begins *********************/
+
−    switch(tty_env_ctrl_blk_p->state)
+
−    {
+
−      case TTY_IDLE:
+
−      {
+
−        switch(p_message->msg_id)
+
−        {
+
−          case TTY_START_REQ:
+
−          {
+
−            /* save the return path */
+
−            tty_env_ctrl_blk_p->return_path.callback_func = ((T_TTY_START *)p_message)->return_path.callback_func;
+
−            tty_env_ctrl_blk_p->return_path.addr_id       = ((T_TTY_START *)p_message)->return_path.addr_id;
+
−
+
−            /* allocate the buffer for the message to the L1 */
+
−            p_send_message = audio_allocate_l1_message(0);
+
−            if (p_send_message != NULL)
+
−            {
+
−              /* send the start command to the audio L1 */
+
−              audio_send_l1_message(MMI_GTT_START_REQ, p_send_message);
+
−            }
+
−
+
−            /* change state */
+
−            tty_env_ctrl_blk_p->state = TTY_WAIT_START_CON;
+
−          }
+
−          break;
+
−          case TTY_STOP_REQ:
+
−          {
+
−            TTY_SEND_TRACE("TTY: STOP ERROR EVENT ",RV_TRACE_LEVEL_ERROR);
+
−          }
+
−          break;
+
−        }
+
−      } /* case TTY_IDLE */
+
−      break;
+
−
+
−      case TTY_WAIT_START_CON:
+
−      {
+
−        switch(p_message->msg_id)
+
−        {
+
−          case MMI_GTT_START_CON:
+
−          {
+
−            /* change state */
+
−            tty_env_ctrl_blk_p->state = TTY_WAIT_STOP_COMMAND;
+
−          }
+
−          break;
+
−          case TTY_STOP_REQ:
+
−          {
+
−            /* change state */
+
−            tty_env_ctrl_blk_p->state = TTY_WAIT_START_CON_TO_STOP;
+
−          }
+
−          break;
+
−        }
+
−      } /* case TTY_WAIT_START_CON */
+
−      break;
+
−
+
−      case TTY_WAIT_START_CON_TO_STOP:
+
−      {
+
−        switch(p_message->msg_id)
+
−        {
+
−          case MMI_GTT_START_CON:
+
−          {
+
−            /* send the stop command to the audio L1 */
+
−            p_send_message = audio_allocate_l1_message(0);
+
−            if (p_send_message != NULL)
+
−            {
+
−              audio_send_l1_message(MMI_GTT_STOP_REQ, p_send_message);
+
−            }
+
−
+
−            /* change state */
+
−            tty_env_ctrl_blk_p->state = TTY_WAIT_STOP_CON;
+
−          }
+
−          break;
+
−          case TTY_STOP_REQ:
+
−          {
+
−            TTY_SEND_TRACE("TTY: STOP ERROR EVENT ",RV_TRACE_LEVEL_ERROR);
+
−          }
+
−          break;
+
−        }
+
−      }
+
−      break;
+
−
+
−      case TTY_WAIT_STOP_COMMAND:
+
−      {
+
−        switch(p_message->msg_id)
+
−        {
+
−          case TTY_STOP_REQ:
+
−          {
+
−            /* send the stop command to the audio L1 */
+
−            p_send_message = audio_allocate_l1_message(0);
+
−            if (p_send_message != NULL)
+
−            {
+
−              audio_send_l1_message(MMI_GTT_STOP_REQ, p_send_message);
+
−            }
+
−
+
−            /* change state */
+
−            tty_env_ctrl_blk_p->state = TTY_WAIT_STOP_CON;
+
−          }
+
−          break;
+
−          case MMI_GTT_STOP_CON:
+
−          {
+
−            tty_send_status (AUDIO_OK, tty_env_ctrl_blk_p->return_path);
+
−
+
−            /* change state */
+
−            tty_env_ctrl_blk_p->state = TTY_IDLE;
+
−          }
+
−          break;
+
−        }
+
−      } /* case TTY_WAIT_STOP_COMMAND */
+
−      break;
+
−
+
−      case TTY_WAIT_STOP_CON:
+
−      {
+
−        switch(p_message->msg_id)
+
−        {
+
−          case MMI_GTT_STOP_CON:
+
−          {
+
−            tty_send_status (AUDIO_OK, tty_env_ctrl_blk_p->return_path);
+
−
+
−            /* change state */
+
−            tty_env_ctrl_blk_p->state = TTY_IDLE;
+
−          }
+
−          break;
+
−          case TTY_STOP_REQ:
+
−          {
+
−            TTY_SEND_TRACE("TTY: STOP ERROR EVENT ",RV_TRACE_LEVEL_ERROR);
+
−          }
+
−          break;
+
−        }
+
−      } /* case TTY_WAIT_STOP_CON */
+
−      break;
+
−
+
−    } /* switch(tty_env_ctrl_blk_p->state) */
+
−  }
+
−#endif /* L1_GTT */