audhead.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef AUDHEAD_H
- #define AUDHEAD_H
- // Some Commonly used Headers
- typedef struct tAuHeader
- {
- UINT16 usFormatTag; /* format type */
- UINT16 usChannels; /* number of channels (i.e. mono, stereo..*/
- UINT32 ulSamplesPerSec; /* sample rate */
- } AuHeader;
- //
- // this is the structure expected in the stream header for
- // the x-pn-wav renderer.
- //
- typedef struct tPCMHEADER
- {
- UINT16 usFormatTag; /* format type */
- UINT16 usChannels; /* number of channels (i.e. mono, stereo..*/
- UINT32 ulSamplesPerSec; /* sample rate */
- UINT16 usBitsPerSample; /* number of bits per sample of mono data*/
- UINT16 usSampleEndianness; /* for 16-bit samples, 0==little, 1==big */
- } PCMHEADER;
- //
- // this is essentially a windows WAVEFORMATEX structure. It is
- // expected by the x-pn-windows-acm renderer.
- //
- typedef struct tWAVEHEADER
- {
- UINT16 usFormatTag; /* format type */
- UINT16 usChannels; /* number of channels (i.e. mono, stereo..*/
- UINT32 ulSamplesPerSec; /* sample rate */
- UINT32 ulAvgBytesPerSec; /* for buffer estimation */
- UINT16 usBlockAlign; /* block size of data */
- UINT16 usBitsPerSample; /* number of bits per sample of mono data*/
- UINT16 usCbSize; /* number of bits of additional format info */
- } WAVEHEADER;
- //We need this because byte-packing on some operating systems may cause
- // sizeof(WAVEHEADER) to return a larger number than 18 (20 or 24):
- #define TRUE_SIZEOF_WAVEHEADER 18
- #endif /* #ifndef AUDHEAD_H */