avc_utils.h revision 95d7e994c73c17b27c7134ba3cc3acbb5889aa87 
1/*
2 * Copyright (C) 2010 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#ifndef AVC_UTILS_H_
18
19#define AVC_UTILS_H_
20
21#include <media/stagefright/foundation/ABuffer.h>
22#include <utils/Errors.h>
23
24namespace android {
25
26struct ABitReader;
27
28enum {
29    kAVCProfileBaseline      = 0x42,
30    kAVCProfileMain          = 0x4d,
31    kAVCProfileExtended      = 0x58,
32    kAVCProfileHigh          = 0x64,
33    kAVCProfileHigh10        = 0x6e,
34    kAVCProfileHigh422       = 0x7a,
35    kAVCProfileHigh444       = 0xf4,
36    kAVCProfileCAVLC444Intra = 0x2c
37};
38
39void FindAVCDimensions(
40        const sp<ABuffer> &seqParamSet, int32_t *width, int32_t *height);
41
42unsigned parseUE(ABitReader *br);
43
44status_t getNextNALUnit(
45        const uint8_t **_data, size_t *_size,
46        const uint8_t **nalStart, size_t *nalSize,
47        bool startCodeFollows = false);
48
49struct MetaData;
50sp<MetaData> MakeAVCCodecSpecificData(const sp<ABuffer> &accessUnit);
51
52bool IsIDR(const sp<ABuffer> &accessUnit);
53
54const char *AVCProfileToString(uint8_t profile);
55
56sp<MetaData> MakeAACCodecSpecificData(
57        unsigned profile, unsigned sampling_freq_index,
58        unsigned channel_configuration);
59
60}  // namespace android
61
62#endif  // AVC_UTILS_H_
63