blob: 27a10338f22b15b0262d7900fd7781d21f014a0a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef BIT_READER_H_
#define BIT_READER_H_
#include "nsAutoPtr.h"
#include "MediaData.h"
namespace stagefright { class ABitReader; }
namespace mp4_demuxer
{
class BitReader
{
public:
explicit BitReader(const mozilla::MediaByteBuffer* aBuffer);
BitReader(const uint8_t* aBuffer, size_t aLength);
~BitReader();
uint32_t ReadBits(size_t aNum);
uint32_t ReadBit() { return ReadBits(1); }
uint32_t ReadU32() { return ReadBits(32); }
uint64_t ReadU64();
// Read the UTF-8 sequence and convert it to its 64-bit UCS-4 encoded form.
// Return 0xfffffffffffffff if sequence was invalid.
uint64_t ReadUTF8();
// Read unsigned integer Exp-Golomb-coded.
uint32_t ReadUE();
// Read signed integer Exp-Golomb-coded.
int32_t ReadSE();
// Return the number of bits parsed so far;
size_t BitCount() const;
private:
nsAutoPtr<stagefright::ABitReader> mBitReader;
const size_t mSize;
};
} // namespace mp4_demuxer
#endif // BIT_READER_H_
|
