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      1 /* ------------------------------------------------------------------
      2  * Copyright (C) 1998-2009 PacketVideo
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
     13  * express or implied.
     14  * See the License for the specific language governing permissions
     15  * and limitations under the License.
     16  * -------------------------------------------------------------------
     17  */
     18 /*
     19 
     20  Pathname: s_MC_Info.h
     21 
     22 ------------------------------------------------------------------------------
     23  REVISION HISTORY
     24 
     25  Description: (1) use enum type for audioObjectType (2) update revision history
     26 
     27  Who:                       Date:
     28  Description:
     29 ------------------------------------------------------------------------------
     30  INCLUDE DESCRIPTION
     31 
     32  This include file defines the structure, MC_Info
     33 
     34 ------------------------------------------------------------------------------
     35 */
     36 
     37 /*----------------------------------------------------------------------------
     38 ; CONTINUE ONLY IF NOT ALREADY DEFINED
     39 ----------------------------------------------------------------------------*/
     40 #ifndef S_MC_INFO_H
     41 #define S_MC_INFO_H
     42 
     43 /*----------------------------------------------------------------------------
     44 ; INCLUDES
     45 ----------------------------------------------------------------------------*/
     46 #include "pv_audio_type_defs.h"
     47 #include "e_rawbitstreamconst.h"
     48 #include "s_ch_info.h"
     49 #include "chans.h"
     50 #include "e_tmp4audioobjecttype.h"
     51 
     52 /*----------------------------------------------------------------------------
     53 ; MACROS
     54 ; Define module specific macros here
     55 ----------------------------------------------------------------------------*/
     56 
     57 /*----------------------------------------------------------------------------
     58 ; DEFINES
     59 ; Include all pre-processor statements here.
     60 ----------------------------------------------------------------------------*/
     61 
     62 /*----------------------------------------------------------------------------
     63 ; EXTERNAL VARIABLES REFERENCES
     64 ; Declare variables used in this module but defined elsewhere
     65 ----------------------------------------------------------------------------*/
     66 
     67 /*----------------------------------------------------------------------------
     68 ; SIMPLE TYPEDEF'S
     69 ----------------------------------------------------------------------------*/
     70 
     71 /*----------------------------------------------------------------------------
     72 ; ENUMERATED TYPEDEF'S
     73 ----------------------------------------------------------------------------*/
     74 
     75 /*----------------------------------------------------------------------------
     76 ; STRUCTURES TYPEDEF'S
     77 ----------------------------------------------------------------------------*/
     78 
     79 typedef struct
     80 {
     81     Int nch;        /* total number of audio channels */
     82     Int nfsce;      /* number of front SCE's pror to first front CPE */
     83     Int nfch;       /* number of front channels */
     84     Int nsch;       /* number of side channels */
     85     Int nbch;       /* number of back channels */
     86     Int nlch;       /* number of lfe channels */
     87     Int ncch;       /* number of valid coupling channels */
     88     tMP4AudioObjectType audioObjectType;    /* Should eventually be called object */
     89     Int sampling_rate_idx;
     90 
     91     Int implicit_channeling;
     92     Int  upsamplingFactor;
     93 #ifdef AAC_PLUS
     94     bool bDownSampledSbr;
     95     Int HE_AAC_level;
     96 #endif
     97     /* All AAC content should be aware of these flag */
     98     /*  AAC+ content Flag */
     99     Int sbrPresentFlag;
    100     /*  Enhanced AAC+ content Flag */
    101     Int psPresentFlag;
    102     tMP4AudioObjectType ExtendedAudioObjectType;    /* Should eventually be called object */
    103 
    104     Ch_Info ch_info[Chans];
    105 } MC_Info;
    106 
    107 /*----------------------------------------------------------------------------
    108 ; GLOBAL FUNCTION DEFINITIONS
    109 ; Function Prototype declaration
    110 ----------------------------------------------------------------------------*/
    111 
    112 /*----------------------------------------------------------------------------
    113 ; END
    114 ----------------------------------------------------------------------------*/
    115 #endif
    116 
    117