wm97audiopaths.c

pxa270平台 windows mobile 5.2 wm9713 触摸屏+音频驱动

/*-----------------------------------------------------------------------------
 * 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: WM97AudioPaths.c 2364 2005-11-04 15:56:03Z ib $
 *
 * This file contains definitions and routines for controlling audio paths.
 *
 * NOTE: This code is here as an example. Each application is different
 * and the input paths require will vary. You should optimise these functions
 * for your particular application.
 *
 * Warning:
 *  This driver is specifically written for Wolfson Codecs. It is not a 
 *  general CODEC device driver.
 *
 *---------------------------------------------------------------------------*/

/*
 * Include files
 */
#include "WMCommon.h"
#include "WMDevice.h"
#include "WMControlLink.h"
#include "WMAudio.h"
#include "WM97AudioPaths.h"

/*
 * Global definitions
 */

/*
 * Only build this if we are asked to.
 */
#if WM_AUDIO && WM_AC97

/*
 * Function prototypes
 */

/*-----------------------------------------------------------------------------
 * Function:    WM97SetLineInRecPaths
 *
 * Set up Line In to ADC, left and/or right channels as the record path.
 *
 * Parameters:
 *      hDevice     handle to the device (from WMOpenDevice)
 *      lineInL     signal to record on left ADC channel.
 *      lineInR     signal to record on right ADC channel.
 *
 * Returns:     WMSTATUS
 *      See WMStatus.h
 *---------------------------------------------------------------------------*/
WMSTATUS WM97SetLineInRecPaths( WM_DEVICE_HANDLE  hDevice, 
								WM_AUDIO_SIGNAL   lineInL,
								WM_AUDIO_SIGNAL   lineInR 
							  )
{
    WMSTATUS            status;

	/* Make sure active signals are Line In */
	WM_ASSERT( hDevice,
			   ( ( WM_SIGNAL_IS_LINEIN( lineInL ) || WM_AUDIO_IGNORE == lineInL ) &&
			     ( WM_SIGNAL_IS_LINEIN( lineInR ) || WM_AUDIO_IGNORE == lineInR ) &&
			     ( WM_AUDIO_IGNORE != lineInL || WM_AUDIO_IGNORE != lineInR ) )
			 );

	/* Set the ADC to 0dB */
    status = WMAudioSetSignalVolumeDb( hDevice,
                                       WM_AUDIO_HIFI_ADC, 
                                       0,
                                       WM_CHANNEL_ALL
                                     );
    if ( WM_ERROR( status ) )
    {
        WM_TRACE( hDevice,
                  ( "WM97SetLineInRecPath - Setting ADC gain failed: %s",
                  WMStatusText( status ) ) );
        goto exit;
    }

    /* Set line in to 0dB */
    if ( WM_AUDIO_IGNORE != lineInL )
    {
        status = WMAudioSetSignalVolumeDb( hDevice, 
                                           lineInL,
                                           0,
                                           WM_CHANNEL_ALL
                                         );
        if ( WM_ERROR( status ) )
        {
            WM_TRACE( hDevice,
                      ( "WM97SetMicRecPaths - Setting left line volume failed: %s",
                      WMStatusText( status ) ) );
            goto exit;
        }
    }

    if ( WM_AUDIO_IGNORE != lineInR && lineInL != lineInR )
    {
        status = WMAudioSetSignalVolumeDb( hDevice, 
                                           lineInR,
                                           0,
                                           WM_CHANNEL_ALL
                                         );
        if ( WM_ERROR( status ) )
        {
            WM_TRACE( hDevice,
                      ( "WM97SetMicRecPaths - Setting right line volume failed: %s",
                      WMStatusText( status ) ) );
            goto exit;
        }
    }

    /* Set Record Source to Line In for selected channels */
	status = WMAudioSetRecordSources( hDevice, lineInL, lineInR );

    if ( WM_ERROR( status ) )
    {
        WM_TRACE( hDevice,
                  ( "WM97SetLineInRecPath - Setting record source failed: %s", 
                  WMStatusText( status ) ) );
        goto exit;
    }

    /* Take the ADC input from before the DAC output is added */
    if ( IS_WM9705_FAMILY( hDevice ) )
    {
        status = WMSetField( hDevice, 
                             WM97_ADD_FUN_CONTROL, 
                             WM9705_ADDFUN_ADCNDAC, 
                             WM9705_ADDFUN_ADCNDAC 
                           );

        if ( WM_ERROR( status ) )
        {
            WM_TRACE( hDevice,
                      ( "WMAudioSetLineInRecPath - Removing DAC output from ADC input failed: %s",
                      WMStatusText( status ) ) );
            goto exit;
        }
    }

    /* Enable sidetone volume to zero dB */
    if ( IS_WM9712_FAMILY( hDevice ) )
    {
        status = WMSetField( hDevice,
                             WM97_SIDETONE_VOLUME, 
                             WM9712_SIDETONE_ALC_0DB, 
                             WM9712_SIDETONE_MIC_MUTE | WM9712_SIDETONE_ALC_MUTE_MASK 
                           );
        if ( WM_ERROR( status ) )
        {
            WM_TRACE( hDevice,
                      ( "WM97SetLineInRecPath - Enabling sidetone failed: %s",
                      WMStatusText( status ) ) );
            goto exit;
        }
    }

exit:
    return status;
}

/*-----------------------------------------------------------------------------
 * Function:    WM97SetMicRecPaths
 *
 * Set up a microphone path to ADC left and/or right channels as the 
 * record path.
 *
 * Parameters:
 *      hDevice         handle to the device (from WMOpenDevice)
 *      micSignalL      left channel microphone input to use.
 *      micSignalR      Right channelmicrophone input to use.
 *      channels        which ADC channel(s) to record signal on.
 *
 * Returns:     WMSTATUS
 *      See WMStatus.h
 *---------------------------------------------------------------------------*/
WMSTATUS WM97SetMicRecPaths( WM_DEVICE_HANDLE  hDevice,
							 WM_AUDIO_SIGNAL   micSignalL,
							 WM_AUDIO_SIGNAL   micSignalR 
						   )
{
    WMSTATUS            status;

	/* Set the ADC to 0dB */
	/* Make sure active signals are Mic */
	WM_ASSERT( hDevice,
			   ( ( WM_SIGNAL_IS_MIC( micSignalL ) || WM_AUDIO_IGNORE == micSignalL ) &&
			     ( WM_SIGNAL_IS_MIC( micSignalR ) || WM_AUDIO_IGNORE == micSignalR ) &&
			     ( WM_AUDIO_IGNORE != micSignalL || WM_AUDIO_IGNORE != micSignalR ) )
			 );

    /* Set the ADC to 0dB */
    status = WMAudioSetSignalVolumeDb( hDevice,
  									   WM_AUDIO_HIFI_ADC, 
									   0,
                                       WM_CHANNEL_ALL
								     );
    if ( WM_ERROR( status ) )
    {
        WM_TRACE( hDevice,
                  ( "WM97SetMicRecPaths - Setting ADC gain failed: %s",
                  WMStatusText( status ) ) );
        goto exit;
    }

    /* Set Mic to Mixers at 0dB */
    if ( WM_AUDIO_IGNORE != micSignalL )
    {
        status = WMAudioSetSignalVolumeDb( hDevice, 
    									   micSignalL,
                                           0,
                                           WM_CHANNEL_ALL
                                         );
        if ( WM_ERROR( status ) )
        {
            WM_TRACE( hDevice,
                      ( "WM97SetMicRecPaths - Setting left MIC volume failed: %s",
                      WMStatusText( status ) ) );
            goto exit;
        }
    }

    if ( WM_AUDIO_IGNORE != micSignalR && micSignalL != micSignalR )
    {
        status = WMAudioSetSignalVolumeDb( hDevice, 
                                           micSignalR,
                                           0,
                                           WM_CHANNEL_ALL
                                         );
        if ( WM_ERROR( status ) )
        {
            WM_TRACE( hDevice,
                      ( "WM97SetMicRecPaths - Setting right MIC volume failed: %s",
                      WMStatusText( status ) ) );
            goto exit;
        }
    }

	status = WMAudioSetRecordSources( hDevice, micSignalL, micSignalR );
    if ( WM_ERROR( status ) )
    {
        WM_TRACE( hDevice,
                  ( "WM97SetMicRecPaths -Setting record source failed: %s",
                  WMStatusText( status ) ) );
        goto exit;
    }