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/*
* Support for generic audio streams
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the MPEG TS, PS and ES tools.
*
* The Initial Developer of the Original Code is Amino Communications Ltd.
* Portions created by the Initial Developer are Copyright (C) 2008
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Amino Communications Ltd, Swavesey, Cambridge UK
*
* ***** END LICENSE BLOCK *****
*/
#ifndef _audio_defns
#define _audio_defns
#include "h222_defns.h"
// A simple wrapper for a frame of audio data
struct audio_frame
{
byte *data; // The frame data, including the syncword at the start
uint32_t data_len;
};
typedef struct audio_frame *audio_frame_p;
#define SIZEOF_AUDIO_FRAME sizeof(struct audio_frame)
// The types of audio we know about
// These are convenience names, defined in terms of the H222 values
#define AUDIO_UNKNOWN 0 // which is a reserved value
#define AUDIO_ADTS ADTS_AUDIO_STREAM_TYPE
#define AUDIO_L2 MPEG2_AUDIO_STREAM_TYPE
#define AUDIO_AC3 ATSC_DOLBY_AUDIO_STREAM_TYPE
#define AUDIO_ADTS_MPEG2 0x100
#define AUDIO_ADTS_MPEG4 0x101
#define AUDIO_STR(x) ((x)==AUDIO_UNKNOWN ?"unknown": \
(x)==AUDIO_ADTS ?"ADTS": \
(x)==AUDIO_ADTS_MPEG2?"ADTS-MPEG2": \
(x)==AUDIO_ADTS_MPEG4?"ADTS-MPEG4": \
(x)==AUDIO_L2 ?"MPEG2": \
(x)==AUDIO_AC3 ?"ATSC-AC3": \
"???")
#endif // _audio_defns
// Local Variables:
// tab-width: 8
// indent-tabs-mode: nil
// c-basic-offset: 2
// End:
// vim: set tabstop=8 shiftwidth=2 expandtab:
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