2011-07-02 19:08:02 +00:00
|
|
|
/* ScummVM - Graphic Adventure Engine
|
|
|
|
*
|
|
|
|
* ScummVM is the legal property of its developers, whose names
|
|
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
|
|
* file distributed with this source distribution.
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or
|
|
|
|
* modify it under the terms of the GNU General Public License
|
|
|
|
* as published by the Free Software Foundation; either version 2
|
|
|
|
* of the License, or (at your option) any later version.
|
2014-02-18 01:34:18 +00:00
|
|
|
*
|
2011-07-02 19:08:02 +00:00
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
2014-02-18 01:34:18 +00:00
|
|
|
*
|
2011-07-02 19:08:02 +00:00
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
// Based on xoreos' BitStream implementation
|
2011-07-02 19:08:02 +00:00
|
|
|
|
|
|
|
#ifndef COMMON_BITSTREAM_H
|
|
|
|
#define COMMON_BITSTREAM_H
|
|
|
|
|
|
|
|
#include "common/scummsys.h"
|
2011-08-27 17:24:36 +00:00
|
|
|
#include "common/textconsole.h"
|
|
|
|
#include "common/stream.h"
|
2016-09-10 15:16:07 +00:00
|
|
|
#include "common/types.h"
|
2017-07-24 21:59:35 +00:00
|
|
|
#include "common/util.h"
|
2011-07-02 19:08:02 +00:00
|
|
|
|
|
|
|
namespace Common {
|
|
|
|
|
2020-07-08 21:30:36 +00:00
|
|
|
/**
|
|
|
|
* @defgroup common_bitstream Bit stream
|
|
|
|
* @ingroup common
|
|
|
|
*
|
|
|
|
* @brief API for implementing a bit stream.
|
|
|
|
*
|
|
|
|
* @{
|
|
|
|
*/
|
|
|
|
|
2011-07-18 23:48:45 +00:00
|
|
|
/**
|
2011-08-27 17:24:36 +00:00
|
|
|
* A template implementing a bit stream for different data memory layouts.
|
|
|
|
*
|
|
|
|
* Such a bit stream reads valueBits-wide values from the data stream and
|
2011-10-20 22:16:57 +00:00
|
|
|
* gives access to their bits, one at a time.
|
2011-07-18 23:48:45 +00:00
|
|
|
*
|
2011-08-27 17:24:36 +00:00
|
|
|
* For example, a bit stream with the layout parameters 32, true, false
|
2020-09-15 23:39:09 +00:00
|
|
|
* for valueBits, isLE and isMSB2LSB, reads 32-bit little-endian values
|
2011-08-27 17:24:36 +00:00
|
|
|
* from the data stream and hands out the bits in the order of LSB to MSB.
|
2011-07-18 23:48:45 +00:00
|
|
|
*/
|
2019-04-08 17:23:31 +00:00
|
|
|
template<class STREAM, int valueBits, bool isLE, bool MSB2LSB>
|
2017-07-24 19:01:19 +00:00
|
|
|
class BitStreamImpl {
|
2011-07-02 19:08:02 +00:00
|
|
|
private:
|
2020-09-15 23:39:09 +00:00
|
|
|
STREAM *_stream; //!< The input stream.
|
|
|
|
DisposeAfterUse::Flag _disposeAfterUse; //!< Whether to delete the stream on destruction.
|
2011-08-27 17:24:36 +00:00
|
|
|
|
2020-09-15 23:39:09 +00:00
|
|
|
uint64 _bitContainer; //!< The currently available bits.
|
|
|
|
uint8 _bitsLeft; //!< Number of bits currently left in the bit container.
|
|
|
|
uint32 _size; //!< Total bit stream size (in bits).
|
|
|
|
uint32 _pos; //!< Current bit stream position (in bits).
|
2011-08-27 17:24:36 +00:00
|
|
|
|
|
|
|
/** Read a data value. */
|
|
|
|
inline uint32 readData() {
|
|
|
|
if (isLE) {
|
|
|
|
if (valueBits == 8)
|
|
|
|
return _stream->readByte();
|
|
|
|
if (valueBits == 16)
|
|
|
|
return _stream->readUint16LE();
|
|
|
|
if (valueBits == 32)
|
|
|
|
return _stream->readUint32LE();
|
|
|
|
} else {
|
|
|
|
if (valueBits == 8)
|
|
|
|
return _stream->readByte();
|
|
|
|
if (valueBits == 16)
|
|
|
|
return _stream->readUint16BE();
|
|
|
|
if (valueBits == 32)
|
|
|
|
return _stream->readUint32BE();
|
|
|
|
}
|
|
|
|
|
|
|
|
assert(false);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2020-09-15 23:39:09 +00:00
|
|
|
/** Fill the container with at least @p min bits. */
|
2019-04-08 17:23:31 +00:00
|
|
|
inline void fillContainer(size_t min) {
|
|
|
|
while (_bitsLeft < min) {
|
|
|
|
|
|
|
|
uint64 data;
|
|
|
|
if (_pos + _bitsLeft + valueBits <= _size) {
|
|
|
|
data = readData();
|
|
|
|
} else {
|
2020-09-15 23:39:09 +00:00
|
|
|
// Peeking data out of bounds is well-defined and returns 0 bits.
|
2019-04-08 17:23:31 +00:00
|
|
|
// This is for convenience when using speed-up techniques reading
|
2020-09-15 23:39:09 +00:00
|
|
|
// more bits than actually available. Call eos() to check if data
|
|
|
|
// was actually read out of bounds. Peeking out of bounds does not
|
|
|
|
// set the eos flag.
|
2019-04-08 17:23:31 +00:00
|
|
|
data = 0;
|
|
|
|
}
|
2011-08-27 17:24:36 +00:00
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
// Move the data value to the right position in the bit container
|
|
|
|
if (MSB2LSB)
|
|
|
|
_bitContainer |= data << (64 - valueBits - _bitsLeft);
|
|
|
|
else
|
|
|
|
_bitContainer |= data << _bitsLeft;
|
2011-08-27 17:24:36 +00:00
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
_bitsLeft += valueBits;
|
2011-08-27 17:24:36 +00:00
|
|
|
}
|
2019-04-08 17:23:31 +00:00
|
|
|
}
|
|
|
|
|
2020-09-15 23:39:09 +00:00
|
|
|
/** Get @p n bits from the bit container. */
|
2019-04-08 17:23:31 +00:00
|
|
|
inline static uint32 getNBits(uint64 value, size_t n) {
|
|
|
|
if (n == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
const size_t toShift = 64 - n;
|
|
|
|
|
|
|
|
if (MSB2LSB)
|
|
|
|
return value >> toShift;
|
|
|
|
else
|
|
|
|
return (value << toShift) >> toShift;
|
|
|
|
}
|
|
|
|
|
|
|
|
/** Skip already read bits. */
|
|
|
|
inline void skipBits(size_t n) {
|
|
|
|
assert(n <= _bitsLeft);
|
|
|
|
|
|
|
|
// Shift to the next bit
|
|
|
|
if (MSB2LSB)
|
|
|
|
_bitContainer <<= n;
|
|
|
|
else
|
|
|
|
_bitContainer >>= n;
|
|
|
|
|
|
|
|
_bitsLeft -= n;
|
|
|
|
_pos += n;
|
|
|
|
}
|
2011-07-02 19:08:02 +00:00
|
|
|
|
2011-08-27 17:24:36 +00:00
|
|
|
public:
|
|
|
|
/** Create a bit stream using this input data stream and optionally delete it on destruction. */
|
2017-07-24 19:01:19 +00:00
|
|
|
BitStreamImpl(STREAM *stream, DisposeAfterUse::Flag disposeAfterUse = DisposeAfterUse::NO) :
|
2019-04-08 17:23:31 +00:00
|
|
|
_stream(stream), _disposeAfterUse(disposeAfterUse), _bitContainer(0), _bitsLeft(0), _pos(0) {
|
2011-08-27 17:24:36 +00:00
|
|
|
|
|
|
|
if ((valueBits != 8) && (valueBits != 16) && (valueBits != 32))
|
2019-04-08 17:23:31 +00:00
|
|
|
error("BitStreamImpl: Invalid memory layout %d, %d, %d", valueBits, isLE, MSB2LSB);
|
2017-07-12 16:43:08 +00:00
|
|
|
|
|
|
|
_size = (_stream->size() & ~((uint32) ((valueBits >> 3) - 1))) * 8;
|
2011-08-27 17:24:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/** Create a bit stream using this input data stream. */
|
2017-07-24 19:01:19 +00:00
|
|
|
BitStreamImpl(STREAM &stream) :
|
2019-04-08 17:23:31 +00:00
|
|
|
_stream(&stream), _disposeAfterUse(DisposeAfterUse::NO), _bitContainer(0), _bitsLeft(0), _pos(0) {
|
2011-08-27 17:24:36 +00:00
|
|
|
|
|
|
|
if ((valueBits != 8) && (valueBits != 16) && (valueBits != 32))
|
2019-04-08 17:23:31 +00:00
|
|
|
error("BitStreamImpl: Invalid memory layout %d, %d, %d", valueBits, isLE, MSB2LSB);
|
2017-07-12 16:43:08 +00:00
|
|
|
|
|
|
|
_size = (_stream->size() & ~((uint32) ((valueBits >> 3) - 1))) * 8;
|
2011-08-27 17:24:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
~BitStreamImpl() {
|
2016-09-10 15:16:07 +00:00
|
|
|
if (_disposeAfterUse == DisposeAfterUse::YES)
|
2011-08-27 17:24:36 +00:00
|
|
|
delete _stream;
|
|
|
|
}
|
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
/** Read a bit from the bit stream, without changing the stream's position. */
|
|
|
|
uint peekBit() {
|
|
|
|
fillContainer(1);
|
2011-08-27 17:24:36 +00:00
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
return getNBits(_bitContainer, 1);
|
2017-07-24 21:59:35 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/** Read a bit from the bit stream. */
|
2019-04-08 17:23:31 +00:00
|
|
|
uint getBit() {
|
|
|
|
const uint b = peekBit();
|
2017-07-24 21:59:35 +00:00
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
skipBits(1);
|
2011-08-27 17:24:36 +00:00
|
|
|
|
|
|
|
return b;
|
|
|
|
}
|
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
/**
|
|
|
|
* Read a multi-bit value from the bit stream, without changing the stream's position.
|
|
|
|
*
|
2020-09-15 23:39:09 +00:00
|
|
|
* The bit order is the same as in @ref getBits().
|
2019-04-08 17:23:31 +00:00
|
|
|
*/
|
|
|
|
uint32 peekBits(size_t n) {
|
|
|
|
if (n > 32)
|
|
|
|
error("BitStreamImpl::peekBits(): Too many bits requested to be peeked");
|
|
|
|
|
|
|
|
fillContainer(n);
|
|
|
|
return getNBits(_bitContainer, n);
|
|
|
|
}
|
|
|
|
|
2011-10-20 22:16:57 +00:00
|
|
|
/**
|
|
|
|
* Read a multi-bit value from the bit stream.
|
|
|
|
*
|
2020-09-15 23:39:09 +00:00
|
|
|
* The value is read as if just taken as a whole from the bit stream.
|
2011-10-20 22:16:57 +00:00
|
|
|
*
|
|
|
|
* For example:
|
2020-09-15 23:39:09 +00:00
|
|
|
* Reading a 4-bit value from an 8-bit bit stream with the contents 01010011:
|
|
|
|
* If the bit stream is MSB2LSB, the 4-bit value would be 0101.
|
|
|
|
* If the bit stream is LSB2MSB, the 4-bit value would be 0011.
|
2011-10-20 22:16:57 +00:00
|
|
|
*/
|
2019-04-08 17:23:31 +00:00
|
|
|
uint32 getBits(size_t n) {
|
2011-08-27 17:24:36 +00:00
|
|
|
if (n > 32)
|
|
|
|
error("BitStreamImpl::getBits(): Too many bits requested to be read");
|
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
const uint32 b = peekBits(n);
|
2011-08-27 17:24:36 +00:00
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
skipBits(n);
|
2011-08-27 17:24:36 +00:00
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
return b;
|
2011-08-27 17:24:36 +00:00
|
|
|
}
|
|
|
|
|
2011-10-20 22:16:57 +00:00
|
|
|
/**
|
|
|
|
* Add a bit to the value x, making it an n+1-bit value.
|
|
|
|
*
|
|
|
|
* The current value is shifted and the bit is added to the
|
2020-09-15 23:39:09 +00:00
|
|
|
* appropriate place, depending on the stream's bit order.
|
2011-10-20 22:16:57 +00:00
|
|
|
*
|
|
|
|
* For example:
|
|
|
|
* A bit y is added to the value 00001100 with size 4.
|
2020-09-15 23:39:09 +00:00
|
|
|
* If the stream's bit order is MSB2LSB, the resulting value is 0001100y.
|
|
|
|
* If the stream's bit order is LSB2MSB, the resulting value is 000y1100.
|
2011-10-20 22:16:57 +00:00
|
|
|
*/
|
2011-08-27 17:24:36 +00:00
|
|
|
void addBit(uint32 &x, uint32 n) {
|
2011-10-20 18:47:53 +00:00
|
|
|
if (n >= 32)
|
|
|
|
error("BitStreamImpl::addBit(): Too many bits requested to be read");
|
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
if (MSB2LSB)
|
2011-08-27 17:24:36 +00:00
|
|
|
x = (x << 1) | getBit();
|
|
|
|
else
|
|
|
|
x = (x & ~(1 << n)) | (getBit() << n);
|
|
|
|
}
|
|
|
|
|
|
|
|
/** Rewind the bit stream back to the start. */
|
|
|
|
void rewind() {
|
|
|
|
_stream->seek(0);
|
|
|
|
|
2019-04-08 17:23:31 +00:00
|
|
|
_bitContainer = 0;
|
|
|
|
_bitsLeft = 0;
|
|
|
|
_pos = 0;
|
2011-08-27 17:24:36 +00:00
|
|
|
}
|
|
|
|
|
2020-09-15 23:39:09 +00:00
|
|
|
/** Skip the specified number of bits. */
|
2011-08-27 17:24:36 +00:00
|
|
|
void skip(uint32 n) {
|
2019-04-08 17:23:31 +00:00
|
|
|
while (n > 32) {
|
|
|
|
fillContainer(32);
|
|
|
|
skipBits(32);
|
|
|
|
n -= 32;
|
|
|
|
}
|
|
|
|
|
|
|
|
fillContainer(n);
|
|
|
|
skipBits(n);
|
2011-08-27 17:24:36 +00:00
|
|
|
}
|
|
|
|
|
2014-06-09 08:40:20 +00:00
|
|
|
/** Skip the bits to closest data value border. */
|
|
|
|
void align() {
|
2019-04-08 17:23:31 +00:00
|
|
|
uint32 bitsAfterBoundary = _pos % valueBits;
|
|
|
|
if (bitsAfterBoundary) {
|
|
|
|
skip(valueBits - bitsAfterBoundary);
|
|
|
|
}
|
2014-06-09 08:40:20 +00:00
|
|
|
}
|
|
|
|
|
2011-08-27 17:24:36 +00:00
|
|
|
/** Return the stream position in bits. */
|
|
|
|
uint32 pos() const {
|
2017-07-24 19:45:25 +00:00
|
|
|
return _pos;
|
2011-08-27 17:24:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/** Return the stream size in bits. */
|
|
|
|
uint32 size() const {
|
2017-07-12 16:43:08 +00:00
|
|
|
return _size;
|
2011-08-27 17:24:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
bool eos() const {
|
2017-07-24 19:45:25 +00:00
|
|
|
return _stream->eos() || (_pos >= _size);
|
2011-08-27 17:24:36 +00:00
|
|
|
}
|
2019-04-08 17:23:31 +00:00
|
|
|
|
|
|
|
static bool isMSB2LSB() {
|
|
|
|
return MSB2LSB;
|
|
|
|
}
|
2011-07-02 19:08:02 +00:00
|
|
|
};
|
|
|
|
|
2017-07-24 20:16:40 +00:00
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* A cut-down version of MemoryReadStream specifically for use with BitStream.
|
|
|
|
* It removes the virtual call overhead for reading bytes from a memory buffer,
|
|
|
|
* and allows directly inlining this access.
|
|
|
|
*
|
|
|
|
* The code duplication with MemoryReadStream is not ideal.
|
|
|
|
* It might be possible to avoid this by making this a final subclass of
|
|
|
|
* MemoryReadStream, but that is a C++11 feature.
|
|
|
|
*/
|
|
|
|
class BitStreamMemoryStream {
|
|
|
|
private:
|
|
|
|
const byte * const _ptrOrig;
|
|
|
|
const byte *_ptr;
|
|
|
|
const uint32 _size;
|
|
|
|
uint32 _pos;
|
|
|
|
DisposeAfterUse::Flag _disposeMemory;
|
|
|
|
bool _eos;
|
2020-09-30 21:17:38 +00:00
|
|
|
/** @overload */
|
2017-07-24 20:16:40 +00:00
|
|
|
public:
|
|
|
|
BitStreamMemoryStream(const byte *dataPtr, uint32 dataSize, DisposeAfterUse::Flag disposeMemory = DisposeAfterUse::NO) :
|
|
|
|
_ptrOrig(dataPtr),
|
|
|
|
_ptr(dataPtr),
|
|
|
|
_size(dataSize),
|
|
|
|
_pos(0),
|
|
|
|
_disposeMemory(disposeMemory),
|
|
|
|
_eos(false) {}
|
|
|
|
|
|
|
|
~BitStreamMemoryStream() {
|
|
|
|
if (_disposeMemory)
|
|
|
|
free(const_cast<byte *>(_ptrOrig));
|
|
|
|
}
|
|
|
|
|
|
|
|
bool eos() const {
|
|
|
|
return _eos;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool err() const {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
int32 pos() const {
|
|
|
|
return _pos;
|
|
|
|
}
|
|
|
|
|
|
|
|
int32 size() const {
|
|
|
|
return _size;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool seek(uint32 offset) {
|
|
|
|
assert(offset <= _size);
|
|
|
|
|
|
|
|
_eos = false;
|
|
|
|
_pos = offset;
|
|
|
|
_ptr = _ptrOrig + _pos;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
byte readByte() {
|
|
|
|
if (_pos >= _size) {
|
|
|
|
_eos = true;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
_pos++;
|
|
|
|
return *_ptr++;
|
|
|
|
}
|
|
|
|
|
|
|
|
uint16 readUint16LE() {
|
|
|
|
if (_pos + 2 > _size) {
|
|
|
|
_eos = true;
|
|
|
|
if (_pos < _size) {
|
|
|
|
_pos++;
|
|
|
|
return *_ptr++;
|
|
|
|
} else {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
uint16 val = READ_LE_UINT16(_ptr);
|
|
|
|
|
|
|
|
_pos += 2;
|
|
|
|
_ptr += 2;
|
|
|
|
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
|
|
|
uint16 readUint16BE() {
|
|
|
|
if (_pos + 2 > _size) {
|
|
|
|
_eos = true;
|
|
|
|
if (_pos < _size) {
|
|
|
|
_pos++;
|
|
|
|
return (*_ptr++) << 8;
|
|
|
|
} else {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
uint16 val = READ_LE_UINT16(_ptr);
|
|
|
|
|
|
|
|
_pos += 2;
|
|
|
|
_ptr += 2;
|
|
|
|
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
|
|
|
uint32 readUint32LE() {
|
|
|
|
if (_pos + 4 > _size) {
|
|
|
|
uint32 val = readByte();
|
|
|
|
val |= (uint32)readByte() << 8;
|
|
|
|
val |= (uint32)readByte() << 16;
|
|
|
|
val |= (uint32)readByte() << 24;
|
|
|
|
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
|
|
|
uint32 val = READ_LE_UINT32(_ptr);
|
|
|
|
|
|
|
|
_pos += 4;
|
|
|
|
_ptr += 4;
|
|
|
|
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
|
|
|
uint32 readUint32BE() {
|
|
|
|
if (_pos + 4 > _size) {
|
|
|
|
uint32 val = (uint32)readByte() << 24;
|
|
|
|
val |= (uint32)readByte() << 16;
|
|
|
|
val |= (uint32)readByte() << 8;
|
|
|
|
val |= (uint32)readByte();
|
|
|
|
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
|
|
|
uint32 val = READ_BE_UINT32(_ptr);
|
|
|
|
|
|
|
|
_pos += 4;
|
|
|
|
_ptr += 4;
|
|
|
|
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
|
|
|
};
|
|
|
|
|
2020-09-15 23:39:09 +00:00
|
|
|
/**
|
|
|
|
* @name Typedefs for various memory layouts
|
|
|
|
* @{
|
|
|
|
*/
|
2011-08-27 17:24:36 +00:00
|
|
|
|
|
|
|
/** 8-bit data, MSB to LSB. */
|
2017-07-24 19:01:19 +00:00
|
|
|
typedef BitStreamImpl<SeekableReadStream, 8, false, true > BitStream8MSB;
|
2011-08-27 17:24:36 +00:00
|
|
|
/** 8-bit data, LSB to MSB. */
|
2017-07-24 19:01:19 +00:00
|
|
|
typedef BitStreamImpl<SeekableReadStream, 8, false, false> BitStream8LSB;
|
2011-08-27 17:24:36 +00:00
|
|
|
|
|
|
|
/** 16-bit little-endian data, MSB to LSB. */
|
2017-07-24 19:01:19 +00:00
|
|
|
typedef BitStreamImpl<SeekableReadStream, 16, true , true > BitStream16LEMSB;
|
2011-08-27 17:24:36 +00:00
|
|
|
/** 16-bit little-endian data, LSB to MSB. */
|
2017-07-24 19:01:19 +00:00
|
|
|
typedef BitStreamImpl<SeekableReadStream, 16, true , false> BitStream16LELSB;
|
2011-08-27 17:24:36 +00:00
|
|
|
/** 16-bit big-endian data, MSB to LSB. */
|
2017-07-24 19:01:19 +00:00
|
|
|
typedef BitStreamImpl<SeekableReadStream, 16, false, true > BitStream16BEMSB;
|
2011-08-27 17:24:36 +00:00
|
|
|
/** 16-bit big-endian data, LSB to MSB. */
|
2017-07-24 19:01:19 +00:00
|
|
|
typedef BitStreamImpl<SeekableReadStream, 16, false, false> BitStream16BELSB;
|
2011-08-27 17:24:36 +00:00
|
|
|
|
|
|
|
/** 32-bit little-endian data, MSB to LSB. */
|
2017-07-24 19:01:19 +00:00
|
|
|
typedef BitStreamImpl<SeekableReadStream, 32, true , true > BitStream32LEMSB;
|
2011-08-27 17:24:36 +00:00
|
|
|
/** 32-bit little-endian data, LSB to MSB. */
|
2017-07-24 19:01:19 +00:00
|
|
|
typedef BitStreamImpl<SeekableReadStream, 32, true , false> BitStream32LELSB;
|
2011-08-27 17:24:36 +00:00
|
|
|
/** 32-bit big-endian data, MSB to LSB. */
|
2017-07-24 19:01:19 +00:00
|
|
|
typedef BitStreamImpl<SeekableReadStream, 32, false, true > BitStream32BEMSB;
|
2011-08-27 17:24:36 +00:00
|
|
|
/** 32-bit big-endian data, LSB to MSB. */
|
2017-07-24 19:01:19 +00:00
|
|
|
typedef BitStreamImpl<SeekableReadStream, 32, false, false> BitStream32BELSB;
|
2011-08-27 17:24:36 +00:00
|
|
|
|
2017-07-24 20:16:40 +00:00
|
|
|
|
|
|
|
|
|
|
|
/** 8-bit data, MSB to LSB. */
|
|
|
|
typedef BitStreamImpl<BitStreamMemoryStream, 8, false, true > BitStreamMemory8MSB;
|
|
|
|
/** 8-bit data, LSB to MSB. */
|
|
|
|
typedef BitStreamImpl<BitStreamMemoryStream, 8, false, false> BitStreamMemory8LSB;
|
|
|
|
|
|
|
|
/** 16-bit little-endian data, MSB to LSB. */
|
|
|
|
typedef BitStreamImpl<BitStreamMemoryStream, 16, true , true > BitStreamMemory16LEMSB;
|
|
|
|
/** 16-bit little-endian data, LSB to MSB. */
|
|
|
|
typedef BitStreamImpl<BitStreamMemoryStream, 16, true , false> BitStreamMemory16LELSB;
|
|
|
|
/** 16-bit big-endian data, MSB to LSB. */
|
|
|
|
typedef BitStreamImpl<BitStreamMemoryStream, 16, false, true > BitStreamMemory16BEMSB;
|
|
|
|
/** 16-bit big-endian data, LSB to MSB. */
|
|
|
|
typedef BitStreamImpl<BitStreamMemoryStream, 16, false, false> BitStreamMemory16BELSB;
|
|
|
|
|
|
|
|
/** 32-bit little-endian data, MSB to LSB. */
|
|
|
|
typedef BitStreamImpl<BitStreamMemoryStream, 32, true , true > BitStreamMemory32LEMSB;
|
|
|
|
/** 32-bit little-endian data, LSB to MSB. */
|
|
|
|
typedef BitStreamImpl<BitStreamMemoryStream, 32, true , false> BitStreamMemory32LELSB;
|
|
|
|
/** 32-bit big-endian data, MSB to LSB. */
|
|
|
|
typedef BitStreamImpl<BitStreamMemoryStream, 32, false, true > BitStreamMemory32BEMSB;
|
|
|
|
/** 32-bit big-endian data, LSB to MSB. */
|
|
|
|
typedef BitStreamImpl<BitStreamMemoryStream, 32, false, false> BitStreamMemory32BELSB;
|
|
|
|
|
2020-07-08 21:30:36 +00:00
|
|
|
/** @} */
|
2017-07-24 20:16:40 +00:00
|
|
|
|
2020-09-15 23:39:09 +00:00
|
|
|
/** @} */
|
|
|
|
|
2011-07-02 19:08:02 +00:00
|
|
|
} // End of namespace Common
|
|
|
|
|
|
|
|
#endif // COMMON_BITSTREAM_H
|