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