| /*---------------------------------------------------------------------------- |
| * |
| * 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 */ |
| |