wmvoice.c

WM9713 audio codec driver for WinCE 5.0

/*-----------------------------------------------------------------------------
 * Copyright (c) Wolfson Microelectronics plc.  All rights reserved.
 *
 * This software as well as any related documentation is furnished under 
 * license and may only be used or copied in accordance with the terms of the 
 * license. The information in this file is furnished for informational use 
 * only, is subject to change without notice, and should not be construed as 
 * a commitment by Wolfson Microelectronics plc. Wolfson Microelectronics plc
 * assumes no responsibility or liability for any errors or inaccuracies that
 * may appear in this document or any software that may be provided in
 * association with this document. 
 *
 * Except as permitted by such license, no part of this document may be 
 * reproduced, stored in a retrieval system, or transmitted in any form or by 
 * any means without the express written consent of Wolfson Microelectronics plc. 
 *
 * $Id: WMVoice.c 1571 2005-04-15 15:56:21Z ib $
 *
 * Configure the Voice interface.
 *
 * Warning:
 *  This driver is specifically written for Wolfson Codecs. It is not a 
 *  general CODEC device driver.
 *
 * --------------------------------------------------------------------------*/

/*
 * Include files
 */
#include "WMCommon.h"
#include "WMAudio.h"
#include "WMControlLink.h"
#include "WMStatus.h"
#include "WMVoice.h"

/*
 * Only build this if we're doing Audio Voice support.
 */
#if WM_AUDIO && WM_VOICE

 /*
 * Global definitions
 */

/*
 * Function prototypes
 */

/*-----------------------------------------------------------------------------
 * Function:    WMVoiceEnable
 *
 * Enable the Voice DAC Interface
 *
 * Parameters:
 *      hDevice     handle to the device (from WMOpenDevice)
 *
 * Returns:     WMSTATUS
 *      See WMStatus.h
 *---------------------------------------------------------------------------*/
WMSTATUS WMVoiceEnable( WM_DEVICE_HANDLE hDevice )
{
    WMSTATUS			status		= WMS_UNSUPPORTED;

    if ( !WM_IS_VOICE_SUPPORTED( hDevice ) )
    {
        status = WMS_UNSUPPORTED;
        goto error;
    }
    
#if WM_AUDIO_STREAM
	/*
     * Set up the platform specific stuff.
     */
    WMPlatformSSPInit( hDevice );

    /* Now enable the SSP port */
    WMPlatformSSPEnable( hDevice );
#endif  /* WM_AUDIO_STREAM */

    /*
     * We're done.
     */
    return WMS_SUCCESS;
    
error:    
    return status;
}

/*-----------------------------------------------------------------------------
 * Function:    WMVoiceDisable
 *
 * Disables the Voice DAC Interface.
 *
 * Parameters:
 *      hDevice     handle to the device (from WMOpenDevice)
 *
 * Returns:     void
 *---------------------------------------------------------------------------*/
void WMVoiceDisable( WM_DEVICE_HANDLE hDevice )
{
    /*
     * Make sure we're stopped.
     */
    WMVoiceStop( hDevice );

#if WM_AUDIO_STREAM    
    /*
     * And disable the port.
     */
    WMPlatformSSPDisable( hDevice );
#endif /* WM_AUDIO_STREAM */
}

/*-----------------------------------------------------------------------------
 * Function:    WMVoiceStart
 *
 * Starts the Voice DAC Interface running.
 *
 * Parameters:
 *      hDevice     handle to the device (from WMOpenDevice)
 *
 * Returns:    void
 *---------------------------------------------------------------------------*/
void WMVoiceStart( WM_DEVICE_HANDLE hDevice )
{
#if WM_AUDIO_STREAM
    WMPlatformSSPStart( hDevice );
#endif /* WM_AUDIO_STREAM */
}

/*-----------------------------------------------------------------------------
 * Function:    WMVoiceStop
 *
 * Stops the Voice DAC Interface running.
 *
 * Parameters:
 *      hDevice     handle to the device (from WMOpenDevice)
 *
 * Returns:     none
 *---------------------------------------------------------------------------*/
void WMVoiceStop( WM_DEVICE_HANDLE hDevice )
{
#if WM_AUDIO_STREAM
    WMPlatformSSPStop( hDevice );
#endif /* WM_AUDIO_STREAM */
}

#endif /* WM_AUDIO && WM_VOICE */

/*------------------------------ END OF FILE ---------------------------------*/