47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2015 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#ifndef XENIA_BASE_BIT_STREAM_H_
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#define XENIA_BASE_BIT_STREAM_H_
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#include <cstdint>
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namespace xe {
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class BitStream {
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public:
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BitStream(uint8_t* buffer, size_t size_in_bits);
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~BitStream();
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const uint8_t* buffer() const { return buffer_; }
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uint8_t* buffer() { return buffer_; }
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size_t offset_bits() const { return offset_bits_; }
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size_t size_bits() const { return size_bits_; }
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void Advance(size_t num_bits);
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void SetOffset(size_t offset_bits);
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size_t BitsRemaining();
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// Note: num_bits MUST be in the range 0-57 (inclusive)
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uint64_t Peek(size_t num_bits);
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uint64_t Read(size_t num_bits);
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bool Write(uint64_t val, size_t num_bits); // TODO(DrChat): Not tested!
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size_t Copy(uint8_t* dest_buffer, size_t num_bits);
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private:
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uint8_t* buffer_ = nullptr;
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size_t offset_bits_ = 0;
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size_t size_bits_ = 0;
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};
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} // namespace xe
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#endif // XENIA_BASE_BIT_STREAM_H_
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