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117 lines
3.9 KiB
117 lines
3.9 KiB
#ifndef _PABLIO_H
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#define _PABLIO_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif /* __cplusplus */
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/*
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* $Id$
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* PABLIO.h
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* Portable Audio Blocking read/write utility.
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*
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* Author: Phil Burk, http://www.softsynth.com/portaudio/
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*
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* Include file for PABLIO, the Portable Audio Blocking I/O Library.
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* PABLIO is built on top of PortAudio, the Portable Audio Library.
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* For more information see: http://www.portaudio.com
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* Copyright (c) 1999-2000 Ross Bencina and Phil Burk
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* The text above constitutes the entire PortAudio license; however,
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* the PortAudio community also makes the following non-binding requests:
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*
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* Any person wishing to distribute modifications to the Software is
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* requested to send the modifications to the original developer so that
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* they can be incorporated into the canonical version. It is also
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* requested that these non-binding requests be included along with the
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* license above.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include "portaudio.h"
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#include "ringbuffer.h"
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#include <string.h>
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typedef struct
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{
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RingBuffer inFIFO;
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RingBuffer outFIFO;
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PortAudioStream *stream;
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int bytesPerFrame;
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int samplesPerFrame;
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}
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PABLIO_Stream;
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/* Values for flags for OpenAudioStream(). */
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#define PABLIO_READ (1<<0)
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#define PABLIO_WRITE (1<<1)
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#define PABLIO_READ_WRITE (PABLIO_READ|PABLIO_WRITE)
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#define PABLIO_MONO (1<<2)
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#define PABLIO_STEREO (1<<3)
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/************************************************************
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* Write data to ring buffer.
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* Will not return until all the data has been written.
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*/
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long WriteAudioStream( PABLIO_Stream *aStream, void *data, long numFrames );
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/************************************************************
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* Read data from ring buffer.
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* Will not return until all the data has been read.
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*/
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long ReadAudioStream( PABLIO_Stream *aStream, void *data, long numFrames );
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/************************************************************
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* Return the number of frames that could be written to the stream without
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* having to wait.
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*/
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long GetAudioStreamWriteable( PABLIO_Stream *aStream );
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/************************************************************
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* Return the number of frames that are available to be read from the
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* stream without having to wait.
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*/
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long GetAudioStreamReadable( PABLIO_Stream *aStream );
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/************************************************************
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* Opens a PortAudio stream with default characteristics.
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* Allocates PABLIO_Stream structure.
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*
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* flags parameter can be an ORed combination of:
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* PABLIO_READ, PABLIO_WRITE, or PABLIO_READ_WRITE,
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* and either PABLIO_MONO or PABLIO_STEREO
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*/
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PaError OpenAudioStream( PABLIO_Stream **aStreamPtr, double sampleRate,
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PaSampleFormat format, long flags );
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PaError CloseAudioStream( PABLIO_Stream *aStream );
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* _PABLIO_H */
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