h264bsd_nal_unit.h revision 0c1bc742181ded4930842b46e9507372f0b1b963 
1/*
2 * Copyright (C) 2009 The Android Open Source Project
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 express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17/*------------------------------------------------------------------------------
18
19    Table of contents
20
21    1. Include headers
22    2. Module defines
23    3. Data types
24    4. Function prototypes
25
26------------------------------------------------------------------------------*/
27
28#ifndef H264SWDEC_NAL_UNIT_H
29#define H264SWDEC_NAL_UNIT_H
30
31/*------------------------------------------------------------------------------
32    1. Include headers
33------------------------------------------------------------------------------*/
34
35#include "basetype.h"
36#include "h264bsd_stream.h"
37
38/*------------------------------------------------------------------------------
39    2. Module defines
40------------------------------------------------------------------------------*/
41
42/* macro to determine if NAL unit pointed by pNalUnit contains an IDR slice */
43#define IS_IDR_NAL_UNIT(pNalUnit) \
44    ((pNalUnit)->nalUnitType == NAL_CODED_SLICE_IDR)
45
46/*------------------------------------------------------------------------------
47    3. Data types
48------------------------------------------------------------------------------*/
49
50typedef enum {
51    NAL_CODED_SLICE = 1,
52    NAL_CODED_SLICE_IDR = 5,
53    NAL_SEI = 6,
54    NAL_SEQ_PARAM_SET = 7,
55    NAL_PIC_PARAM_SET = 8,
56    NAL_ACCESS_UNIT_DELIMITER = 9,
57    NAL_END_OF_SEQUENCE = 10,
58    NAL_END_OF_STREAM = 11,
59    NAL_FILLER_DATA = 12,
60    NAL_MAX_TYPE_VALUE = 31
61} nalUnitType_e;
62
63typedef struct
64{
65    nalUnitType_e nalUnitType;
66    u32 nalRefIdc;
67} nalUnit_t;
68
69/*------------------------------------------------------------------------------
70    4. Function prototypes
71------------------------------------------------------------------------------*/
72
73u32 h264bsdDecodeNalUnit(strmData_t *pStrmData, nalUnit_t *pNalUnit);
74
75#endif /* #ifdef H264SWDEC_NAL_UNIT_H */
76
77