From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- dom/media/BitWriter.h | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 dom/media/BitWriter.h (limited to 'dom/media/BitWriter.h') 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 mBuffer; + size_t mPosition = 0; + uint8_t mBitIndex = 0; +}; + +} // namespace mozilla + +#endif // BIT_WRITER_H_ -- cgit v1.2.3