Detailed Description
template<typename BlockReader>
class thrill::core::BitStreamReader< BlockReader >
Definition at line 114 of file bit_stream.hpp.
Inheritance diagram for BitStreamReader< BlockReader >:#include <bit_stream.hpp>
Public Member Functions | |
| BitStreamReader (BlockReader &block_reader) | |
| BitStreamReader (const BitStreamReader &)=delete | |
| non-copyable: delete copy-constructor More... | |
| BitStreamReader (BitStreamReader &&)=default | |
| move-constructor: default More... | |
| size_t | GetBits (unsigned bits) |
| Get bits at the cursor. More... | |
| unsigned | GetNumberOfOnesUntilNextZero () |
| Returns the number of continuous 1 bits at the cursor, followed by a zero. More... | |
| bool | HasNextZeroTest () |
| BitStreamReader & | operator= (const BitStreamReader &)=delete |
| non-copyable: delete assignment operator More... | |
| BitStreamReader & | operator= (BitStreamReader &&)=default |
| move-assignment operator: default More... | |
Protected Types | |
| enum | : size_t { buffer_bits_ = sizeof(size_t) * 8 } |
| number of bits in buffer_ More... | |
| enum | : size_t { mask = (buffer_bits_ - 1) } |
| modulo mask of number of bits in buffer for pos_ counter More... | |
| enum | : size_t { msb_set = ((size_t)1) << (buffer_bits_ - 1) } |
| highest bit set More... | |
Protected Attributes | |
| BlockReader & | block_reader_ |
| Input BlockReader. More... | |
| size_t | buffer_ = 0 |
| current buffer of 32/64 bits More... | |
| size_t | pos_ = buffer_bits_ |
| currently used number of bits More... | |
Member Enumeration Documentation
◆ anonymous enum
|
protected |
◆ anonymous enum
|
protected |
modulo mask of number of bits in buffer for pos_ counter
| Enumerator | |
|---|---|
| mask | |
Definition at line 121 of file bit_stream.hpp.
◆ anonymous enum
|
protected |
Constructor & Destructor Documentation
◆ BitStreamReader() [1/3]
|
inlineexplicit |
Definition at line 127 of file bit_stream.hpp.
References BitStreamWriter< BlockWriter >::operator=().
◆ BitStreamReader() [2/3]
|
delete |
non-copyable: delete copy-constructor
◆ BitStreamReader() [3/3]
|
default |
move-constructor: default
Member Function Documentation
◆ GetBits()
|
inline |
Get bits at the cursor.
- Parameters
-
bits number of bits to return
- Returns
- {bits} at the cursor
Definition at line 147 of file bit_stream.hpp.
References BitStreamWriter< BlockWriter >::buffer_, BitStreamWriter< BlockWriter >::buffer_bits_, BitStreamWriter< BlockWriter >::mask, and BitStreamWriter< BlockWriter >::pos_.
Referenced by LocationDetection< thrill::api::JoinNode::HashCount >::Flush().
◆ GetNumberOfOnesUntilNextZero()
|
inline |
Returns the number of continuous 1 bits at the cursor, followed by a zero.
Used in Golomb decoding.
- Returns
- Number of continuous 1 bits at the cursor, the zero is skipped.
Definition at line 194 of file bit_stream.hpp.
References BitStreamWriter< BlockWriter >::buffer_, BitStreamWriter< BlockWriter >::buffer_bits_, and BitStreamWriter< BlockWriter >::pos_.
◆ HasNextZeroTest()
|
inline |
Test if the buffer contains a zero or if another item can be read. This test is used by the Golomb decoder to check if another value is available.
Definition at line 174 of file bit_stream.hpp.
References BitStreamWriter< BlockWriter >::buffer_, BitStreamWriter< BlockWriter >::buffer_bits_, and BitStreamWriter< BlockWriter >::pos_.
◆ operator=() [1/2]
|
delete |
non-copyable: delete assignment operator
◆ operator=() [2/2]
|
default |
move-assignment operator: default
Member Data Documentation
◆ block_reader_
|
protected |
Input BlockReader.
Definition at line 220 of file bit_stream.hpp.
◆ buffer_
|
protected |
current buffer of 32/64 bits
Definition at line 223 of file bit_stream.hpp.
◆ pos_
|
protected |
currently used number of bits
Definition at line 226 of file bit_stream.hpp.
The documentation for this class was generated from the following file:
- thrill/core/bit_stream.hpp
