Chris@4: #ifndef _PABLIO_H
Chris@4: #define _PABLIO_H
Chris@4: 
Chris@4: #ifdef __cplusplus
Chris@4: extern "C"
Chris@4: {
Chris@4: #endif /* __cplusplus */
Chris@4: 
Chris@4: /*
Chris@4:  * $Id: pablio.h 1083 2006-08-23 07:30:49Z rossb $
Chris@4:  * PABLIO.h
Chris@4:  * Portable Audio Blocking read/write utility.
Chris@4:  *
Chris@4:  * Author: Phil Burk, http://www.softsynth.com/portaudio/
Chris@4:  *
Chris@4:  * Include file for PABLIO, the Portable Audio Blocking I/O Library.
Chris@4:  * PABLIO is built on top of PortAudio, the Portable Audio Library.
Chris@4:  * For more information see: http://www.portaudio.com
Chris@4:  * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
Chris@4:  *
Chris@4:  * Permission is hereby granted, free of charge, to any person obtaining
Chris@4:  * a copy of this software and associated documentation files
Chris@4:  * (the "Software"), to deal in the Software without restriction,
Chris@4:  * including without limitation the rights to use, copy, modify, merge,
Chris@4:  * publish, distribute, sublicense, and/or sell copies of the Software,
Chris@4:  * and to permit persons to whom the Software is furnished to do so,
Chris@4:  * subject to the following conditions:
Chris@4:  *
Chris@4:  * The above copyright notice and this permission notice shall be
Chris@4:  * included in all copies or substantial portions of the Software.
Chris@4:  *
Chris@4:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
Chris@4:  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
Chris@4:  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
Chris@4:  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
Chris@4:  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
Chris@4:  * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
Chris@4:  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Chris@4:  */
Chris@4: 
Chris@4: /*
Chris@4:  * The text above constitutes the entire PortAudio license; however, 
Chris@4:  * the PortAudio community also makes the following non-binding requests:
Chris@4:  *
Chris@4:  * Any person wishing to distribute modifications to the Software is
Chris@4:  * requested to send the modifications to the original developer so that
Chris@4:  * they can be incorporated into the canonical version. It is also 
Chris@4:  * requested that these non-binding requests be included along with the 
Chris@4:  * license above.
Chris@4:  */
Chris@4: 
Chris@4: #include <stdio.h>
Chris@4: #include <stdlib.h>
Chris@4: #include <math.h>
Chris@4: #include "portaudio.h"
Chris@4: #include "ringbuffer.h"
Chris@4: #include <string.h>
Chris@4: 
Chris@4: typedef struct
Chris@4: {
Chris@4:     RingBuffer   inFIFO;
Chris@4:     RingBuffer   outFIFO;
Chris@4:     PortAudioStream *stream;
Chris@4:     int          bytesPerFrame;
Chris@4:     int          samplesPerFrame;
Chris@4: }
Chris@4: PABLIO_Stream;
Chris@4: 
Chris@4: /* Values for flags for OpenAudioStream(). */
Chris@4: #define PABLIO_READ     (1<<0)
Chris@4: #define PABLIO_WRITE    (1<<1)
Chris@4: #define PABLIO_READ_WRITE    (PABLIO_READ|PABLIO_WRITE)
Chris@4: #define PABLIO_MONO     (1<<2)
Chris@4: #define PABLIO_STEREO   (1<<3)
Chris@4: 
Chris@4: /************************************************************
Chris@4:  * Write data to ring buffer.
Chris@4:  * Will not return until all the data has been written.
Chris@4:  */
Chris@4: long WriteAudioStream( PABLIO_Stream *aStream, void *data, long numFrames );
Chris@4: 
Chris@4: /************************************************************
Chris@4:  * Read data from ring buffer.
Chris@4:  * Will not return until all the data has been read.
Chris@4:  */
Chris@4: long ReadAudioStream( PABLIO_Stream *aStream, void *data, long numFrames );
Chris@4: 
Chris@4: /************************************************************
Chris@4:  * Return the number of frames that could be written to the stream without
Chris@4:  * having to wait.
Chris@4:  */
Chris@4: long GetAudioStreamWriteable( PABLIO_Stream *aStream );
Chris@4: 
Chris@4: /************************************************************
Chris@4:  * Return the number of frames that are available to be read from the
Chris@4:  * stream without having to wait.
Chris@4:  */
Chris@4: long GetAudioStreamReadable( PABLIO_Stream *aStream );
Chris@4: 
Chris@4: /************************************************************
Chris@4:  * Opens a PortAudio stream with default characteristics.
Chris@4:  * Allocates PABLIO_Stream structure.
Chris@4:  *
Chris@4:  * flags parameter can be an ORed combination of:
Chris@4:  *    PABLIO_READ, PABLIO_WRITE, or PABLIO_READ_WRITE,
Chris@4:  *    and either PABLIO_MONO or PABLIO_STEREO
Chris@4:  */
Chris@4: PaError OpenAudioStream( PABLIO_Stream **aStreamPtr, double sampleRate,
Chris@4:                          PaSampleFormat format, long flags );
Chris@4: 
Chris@4: PaError CloseAudioStream( PABLIO_Stream *aStream );
Chris@4: 
Chris@4: #ifdef __cplusplus
Chris@4: }
Chris@4: #endif /* __cplusplus */
Chris@4: #endif /* _PABLIO_H */