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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/media/BitWriter.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | dom/media/BitWriter.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/dom/media/BitWriter.h b/dom/media/BitWriter.h new file mode 100644 index 0000000000..64e28c7ebc --- /dev/null +++ b/dom/media/BitWriter.h @@ -0,0 +1,43 @@ +/* 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_WRITER_H_ +#define BIT_WRITER_H_ + +#include "mozilla/RefPtr.h" + +namespace mozilla { + +class MediaByteBuffer; + +class BitWriter { + public: + explicit BitWriter(MediaByteBuffer* aBuffer); + virtual ~BitWriter(); + void WriteBits(uint64_t aValue, size_t aBits); + void WriteBit(bool aValue) { WriteBits(aValue, 1); } + void WriteU8(uint8_t aValue) { WriteBits(aValue, 8); } + void WriteU32(uint32_t aValue) { WriteBits(aValue, 32); } + void WriteU64(uint64_t aValue) { WriteBits(aValue, 64); } + + // Write unsigned integer into Exp-Golomb-coded. 2^32-2 at most + void WriteUE(uint32_t aValue); + // Write unsigned integer Little Endian Base 128 coded. + void WriteULEB128(uint64_t aValue); + + // Write RBSP trailing bits. + void CloseWithRbspTrailing(); + + // Return the number of bits written so far; + size_t BitCount() const { return mPosition * 8 + mBitIndex; } + + private: + RefPtr<MediaByteBuffer> mBuffer; + size_t mPosition = 0; + uint8_t mBitIndex = 0; +}; + +} // namespace mozilla + +#endif // BIT_WRITER_H_ |