1 /*!
2  * \copy
3  *     Copyright (c)  2013, Cisco Systems
4  *     All rights reserved.
5  *
6  *     Redistribution and use in source and binary forms, with or without
7  *     modification, are permitted provided that the following conditions
8  *     are met:
9  *
10  *        * Redistributions of source code must retain the above copyright
11  *          notice, this list of conditions and the following disclaimer.
12  *
13  *        * Redistributions in binary form must reproduce the above copyright
14  *          notice, this list of conditions and the following disclaimer in
15  *          the documentation and/or other materials provided with the
16  *          distribution.
17  *
18  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  *     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20  *     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21  *     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22  *     COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23  *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24  *     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
26  *     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  *     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
28  *     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  *     POSSIBILITY OF SUCH DAMAGE.
30  *
31  */
32 
33 //nalu.h:       NAL Unit definition
34 #ifndef WELS_NAL_UNIT_H__
35 #define WELS_NAL_UNIT_H__
36 
37 #include "typedefs.h"
38 #include "wels_common_basis.h"
39 #include "nal_prefix.h"
40 #include "bit_stream.h"
41 
42 namespace WelsDec {
43 
44 ///////////////////////////////////NAL UNIT level///////////////////////////////////
45 
46 /* NAL Unit Structure */
47 typedef struct TagNalUnit {
48   SNalUnitHeaderExt       sNalHeaderExt;
49 
50   union {
51     struct SVclNal {
52       SSliceHeaderExt     sSliceHeaderExt;
53       SBitStringAux       sSliceBitsRead;
54       uint8_t*            pNalPos;         // save the address of slice nal for GPU function
55       int32_t             iNalLength;   // save the nal length for GPU function
56       bool                bSliceHeaderExtFlag;
57     } sVclNal;
58     SPrefixNalUnit        sPrefixNal;
59   } sNalData;
60   unsigned long long uiTimeStamp;
61 } SNalUnit, *PNalUnit;
62 
63 ///////////////////////////////////ACCESS Unit level///////////////////////////////////
64 
65 /* Access Unit structure */
66 typedef struct TagAccessUnits {
67   PNalUnit*               pNalUnitsList;  // list of NAL Units pointer in this AU
68   uint32_t                uiAvailUnitsNum;   // Number of NAL Units available in each AU list based current bitstream,
69   uint32_t                uiActualUnitsNum;       // actual number of NAL units belong to current au
70 // While available number exceeds count size below, need realloc extra NAL Units for list space.
71   uint32_t                uiCountUnitsNum;        // Count size number of malloced NAL Units in each AU list
72   uint32_t                uiStartPos;
73   uint32_t                uiEndPos;
74   bool                    bCompletedAuFlag;       // Indicate whether it is a completed AU
75 } SAccessUnit, *PAccessUnit;
76 
77 } // namespace WelsDec
78 
79 #endif//WELS_NAL_UNIT_H__
80