mhead.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 _MHEAD_H_
- #define _MHEAD_H_
- #include "decodercommon.h"
- /* portable copy of ecomhead.h */
- /* mpeg audio header */
- typedef struct {
- int sync; /* 1 if valid sync */
- int id;
- int option;
- int prot;
- int br_index;
- int sr_index;
- int pad;
- int private_bit;
- int mode;
- int mode_ext;
- int cr;
- int original;
- int emphasis;
- } MPEG_HEAD;
- /* portable mpeg audio decoder, decoder functions */
- /*typedef struct {
- int in_bytes;
- int out_bytes;
- } IN_OUT;
- typedef struct {
- int channels;
- int outvalues;
- long samprate;
- int bits;
- int framebytes;
- int type;
- } DEC_INFO;*/
- #ifdef __cplusplus
- extern "C" {
- #endif
- int head_info(unsigned char *buf, unsigned int n, MPEG_HEAD *h, int trustFrame);
- int head_info2(unsigned char *buf,
- unsigned int n, MPEG_HEAD *h, int *br, int trustFrame);
- /* head_info returns framebytes > 0 for success */
- /* audio_decode_init returns 1 for success, 0 for fail */
- /* audio_decode returns in_bytes = 0 on sync loss */
- int audio_decode_init(MPEG_HEAD *h, int framebytes_arg,
- int reduction_code, int transform_code, int convert_code,
- int freq_limit);
- void audio_decode_info( DEC_INFO *info);
- IN_OUT audio_decode(unsigned char *bs, short *pcm, int size);
- IN_OUT L3audio_decode_MPEG1Special(unsigned char *bs,
- unsigned char *pcm, int size);
- int audio_decode8_init(MPEG_HEAD *h, int framebytes_arg,
- int reduction_code, int transform_code, int convert_code,
- int freq_limit);
- void audio_decode8_info( DEC_INFO *info);
- IN_OUT audio_decode8(unsigned char *bs, short *pcmbuf);
- /*-- integer decode --*/
- int i_audio_decode_init(MPEG_HEAD *h, int framebytes_arg,
- int reduction_code, int transform_code, int convert_code,
- int freq_limit);
- void i_audio_decode_info( DEC_INFO *info);
- IN_OUT i_audio_decode(unsigned char *bs, short *pcm);
- #ifdef __cplusplus
- }
- #endif
- #endif