Package org.brotli.dec

Class BitReader

java.lang.Object

org.brotli.dec.BitReader

final class BitReader
extends java.lang.Object

Bit reading helpers.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static int	BITNESS
private static int	BUFFER_SIZE
private static int	BYTENESS
private static int	CAPACITY
private static int	DEBUG
private static int	HALF_BITNESS
private static int	HALF_BUFFER_SIZE
private static int	HALF_SIZE
private static int	HALF_WATERLINE
private static int	HALVES_CAPACITY
private static int	LOG_BITNESS
private static int	LOG_HALF_SIZE
private static int	SAFEGUARD
private static int	SLACK
private static int	WATERLINE

Constructor Summary

Constructors

Constructor	Description
BitReader()

Method Summary

Modifier and Type	Method	Description
(package private) static void	assertAccumulatorHealthy(State s)
(package private) static void	bytesToNibbles(State s, int byteLen)	Translates bytes to halves (int/short).
(package private) static void	checkHealth(State s, int endOfStream)
(package private) static void	copyRawBytes(State s, byte[] data, int offset, int length)
(package private) static void	doFillBitWindow(State s)
(package private) static void	doReadMoreInput(State s)
(package private) static void	fillBitWindow(State s)
(package private) static int	halfAvailable(State s)
(package private) static void	initBitReader(State s)
(package private) static void	jumpToByteBoundary(State s)
(package private) static int	peekBits(State s)
private static void	prepare(State s)
(package private) static int	readBits(State s, int n)
(package private) static int	readFewBits(State s, int n)	Fetches bits from accumulator.
private static int	readManyBits(State s, int n)
(package private) static void	readMoreInput(State s)	Fills up the input buffer.
(package private) static void	reload(State s)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG_BITNESS

private static final int LOG_BITNESS

DEBUG

private static final int DEBUG

BITNESS

static final int BITNESS

BYTENESS

private static final int BYTENESS

CAPACITY

private static final int CAPACITY

See Also:

Constant Field Values

SLACK

private static final int SLACK

See Also:

Constant Field Values

BUFFER_SIZE

private static final int BUFFER_SIZE

See Also:

Constant Field Values

SAFEGUARD

private static final int SAFEGUARD

See Also:

Constant Field Values

WATERLINE

private static final int WATERLINE

See Also:

Constant Field Values

HALF_BITNESS

private static final int HALF_BITNESS

HALF_SIZE

private static final int HALF_SIZE

HALVES_CAPACITY

private static final int HALVES_CAPACITY

HALF_BUFFER_SIZE

private static final int HALF_BUFFER_SIZE

HALF_WATERLINE

private static final int HALF_WATERLINE

LOG_HALF_SIZE

private static final int LOG_HALF_SIZE

Constructor Detail

BitReader

BitReader()

Method Detail

readMoreInput

static void readMoreInput(State s)

Fills up the input buffer.

No-op if there are at least 36 bytes present after current position.

After encountering the end of the input stream, 64 additional zero bytes are copied to the buffer.

doReadMoreInput

static void doReadMoreInput(State s)

checkHealth

static void checkHealth(State s,
                        int endOfStream)

assertAccumulatorHealthy

static void assertAccumulatorHealthy(State s)

fillBitWindow

static void fillBitWindow(State s)

doFillBitWindow

static void doFillBitWindow(State s)

peekBits

static int peekBits(State s)

readFewBits

static int readFewBits(State s,
                       int n)

Fetches bits from accumulator. WARNING: accumulator MUST contain at least the specified amount of bits, otherwise BitReader will become broken.

readBits

static int readBits(State s,
                    int n)

readManyBits

private static int readManyBits(State s,
                                int n)

initBitReader

static void initBitReader(State s)

prepare

private static void prepare(State s)

reload

static void reload(State s)

jumpToByteBoundary

static void jumpToByteBoundary(State s)

halfAvailable

static int halfAvailable(State s)

copyRawBytes

static void copyRawBytes(State s,
                         byte[] data,
                         int offset,
                         int length)

bytesToNibbles

static void bytesToNibbles(State s,
                           int byteLen)

Translates bytes to halves (int/short).