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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1990-2001 by Sun Microsystems, Inc.
* All rights reserved.
*/
#ifndef _MULTIMEDIA_AUDIOSTREAM_H
#define _MULTIMEDIA_AUDIOSTREAM_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <Audio.h>
#include <AudioHdr.h>
#include <stdlib.h>
#include <AudioDebug.h>
#ifdef __cplusplus
extern "C" {
#endif
// This is the abstract base class for all audio data sources/sinks.
// It is invalid to create an object of type AudioStream.
class AudioStream : public Audio {
private:
AudioHdr hdr; // data encoding info
Double length; // length of data, in secs
protected:
Boolean hdrset() const; // TRUE if header valid
// Set header (always)
AudioError updateheader(
const AudioHdr& h); // header to copy
// Set data length
void setlength(
Double len); // new length, in secs
virtual Boolean opened() const = 0; // TRUE if stream 'open'
public:
AudioStream(const char *path = ""); // Constructor
// Set header
virtual AudioError SetHeader(
const AudioHdr& h); // header to copy
// Set data length
virtual void SetLength(
Double len); // new length, in secs
// XXX - is this needed? do we need time->sample frames?
virtual size_t GetByteCount() const; // Get length, in bytes
// class Audio methods specialized here
virtual AudioHdr GetHeader(); // Get header
virtual Double GetLength() const; // Get length, in secs
// Make sure endian of the data matches the current processor.
AudioError coerceEndian(unsigned char *buf, size_t len,
AudioEndian en);
virtual Boolean isEndianSensitive() const;
AudioEndian localByteOrder() const
{
return (hdr.localByteOrder());
}
};
#include <AudioStream_inline.h>
#ifdef __cplusplus
}
#endif
#endif /* !_MULTIMEDIA_AUDIOSTREAM_H */
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