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/*----------------------------------------------------------------------------
*
* File:
* eas_pcm.h
*
* Contents and purpose:
* External function prototypes for eas_pcm.c module
*
*
* Copyright Sonic Network Inc. 2005
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*----------------------------------------------------------------------------
* Revision Control:
* $Revision: 847 $
* $Date: 2007-08-27 21:30:08 -0700 (Mon, 27 Aug 2007) $
*----------------------------------------------------------------------------
*/
#ifndef _EAS_PCM_H
#define _EAS_PCM_H
/* default gain setting - roughly unity gain */
#define PCM_DEFAULT_GAIN_SETTING 0x6000
typedef struct s_pcm_state_tag *EAS_PCM_HANDLE;
typedef void (*EAS_PCM_CALLBACK) (EAS_DATA_HANDLE pEASData, EAS_VOID_PTR cbInstData, EAS_PCM_HANDLE pcmHandle, EAS_STATE state);
/*----------------------------------------------------------------------------
* EAS_PEInit()
*----------------------------------------------------------------------------
* Purpose:
* Initializes the PCM engine
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
EAS_RESULT EAS_PEInit (EAS_DATA_HANDLE pEASData);
/*----------------------------------------------------------------------------
* EAS_PEShutdown()
*----------------------------------------------------------------------------
* Purpose:
* Shuts down the PCM engine
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
EAS_RESULT EAS_PEShutdown (EAS_DATA_HANDLE pEASData);
/*----------------------------------------------------------------------------
* EAS_PERender()
*----------------------------------------------------------------------------
* Purpose:
* Render a buffer of PCM audio
*
* Inputs:
*
*
* Outputs:
*
*
* Side Effects:
*
*----------------------------------------------------------------------------
*/
EAS_RESULT EAS_PERender (EAS_DATA_HANDLE pEASData, EAS_I32 numSamples);
#endif /* end _EAS_PCM_H */
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