libpgf
6.12.24
PGF - Progressive Graphics File
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#include "PGFtypes.h"
Go to the source code of this file.
Macros | |
#define | MAKEU64(a, b) ((UINT64) (((UINT32) (a)) | ((UINT64) ((UINT32) (b))) << 32)) |
Make 64 bit unsigned integer from two 32 bit unsigned integers. | |
Functions | |
*Set one bit of a bit stream to *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *void | SetBit (UINT32 *stream, UINT32 pos) |
*Set one bit of a bit stream to *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *void | ClearBit (UINT32 *stream, UINT32 pos) |
*Return one bit of a bit stream *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *return bit at position pos of bit stream stream *bool | GetBit (UINT32 *stream, UINT32 pos) |
*Compare k bit binary representation of stream at position pos with val *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *param k Number of bits to compare *param val Value to compare with *return true if equal *bool | CompareBitBlock (UINT32 *stream, UINT32 pos, UINT32 k, UINT32 val) |
*Store k bit binary representation of val in stream at position pos *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *param val Value to store in stream at position pos *param k Number of bits of integer representation of val *void | SetValueBlock (UINT32 *stream, UINT32 pos, UINT32 val, UINT32 k) |
if (iLoInt==iHiInt) | |
if (iFirstInt==iLastInt) | |
for (UINT32 i=iFirstInt+1;i<=iLastInt;i++) | |
*Set block of size at least len at position pos in stream *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *param len Number of bits set to *void | SetBitBlock (UINT32 *stream, UINT32 pos, UINT32 len) |
*Returns the distance to the next in stream at position pos *If no is found within len then len is returned *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *param len size of search | area (in bits)*return The distance to the next 1 in stream at position pos */inline UINT32 SeekBitRange(UINT32 *stream |
while (((*word &testMask)==0)&&(count< len)) | |
while (((*word &testMask)!=0)&&(count< len)) | |
*Compute bit position of the next bit word *param pos current bit stream position *return bit position of next bit word *UINT32 | AlignWordPos (UINT32 pos) |
*Compute number of the bit words *param pos Current bit stream position *return Number of bit words *UINT32 | NumberOfWords (UINT32 pos) |
Variables | |
*file Bitstream h *brief PGF bit stream operations *author C Stamm *static const UINT32 | Filled = 0xFFFFFFFF |
*Read k bit number from stream at position pos *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *param k Number of bits to | read |
*Read k bit number from stream at position pos *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *param k Number of bits to UINT32 | pos |
*Read k bit number from stream at position pos *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *param k Number of bits to UINT32 UINT32 | k |
const UINT32 | iLoInt = pos >> WordWidthLog |
const UINT32 | iHiInt = (pos + k - 1) >> WordWidthLog |
const UINT32 | loMask = Filled << (pos%WordWidth) |
const UINT32 | hiMask = Filled >> (WordWidth - 1 - ((pos + k - 1)%WordWidth)) |
else | |
count = pos%WordWidth | |
hiCount = stream[iHiInt] & hiMask | |
const UINT32 | iFirstInt = pos >> WordWidthLog |
const UINT32 | iLastInt = (pos + len - 1) >> WordWidthLog |
const UINT32 | startMask = Filled << (pos%WordWidth) |
*Returns the distance to the next in stream at position pos *If no is found within len | bits |
*Returns the distance to the next in stream at position pos *If no is found within len then len is returned *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *param len size of search UINT32 UINT32 | len |
UINT32 | testMask = 1 << (pos%WordWidth) |
UINT32 * | word = stream + (pos >> WordWidthLog) |
#define MAKEU64 | ( | a, | |
b | |||
) | ((UINT64) (((UINT32) (a)) | ((UINT64) ((UINT32) (b))) << 32)) |
Make 64 bit unsigned integer from two 32 bit unsigned integers.
Definition at line 40 of file BitStream.h.
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inline |
Definition at line 260 of file BitStream.h.
*Returns the distance to the next in stream at position pos *If no is found within len then len is returned *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *param len size of search area | ( | in | bits | ) |
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Definition at line 56 of file BitStream.h.
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Definition at line 77 of file BitStream.h.
for | ( | ) |
Definition at line 167 of file BitStream.h.
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Definition at line 65 of file BitStream.h.
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Definition at line 269 of file BitStream.h.
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Definition at line 48 of file BitStream.h.
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Definition at line 179 of file BitStream.h.
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Definition at line 102 of file BitStream.h.
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else |
Definition at line 139 of file BitStream.h.
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Definition at line 37 of file BitStream.h.
Definition at line 143 of file BitStream.h.
Definition at line 133 of file BitStream.h.
const UINT32 iFirstInt = pos >> WordWidthLog |
Definition at line 157 of file BitStream.h.
const UINT32 iHiInt = (pos + k - 1) >> WordWidthLog |
Definition at line 131 of file BitStream.h.
const UINT32 iLastInt = (pos + len - 1) >> WordWidthLog |
Definition at line 158 of file BitStream.h.
const UINT32 iLoInt = pos >> WordWidthLog |
Definition at line 130 of file BitStream.h.
* Read k bit number from stream at position pos* param stream A bit stream stored in array of unsigned integers* param pos A valid zero based position in the bit stream* param k Number of bits to UINT32 UINT32 k |
Definition at line 128 of file BitStream.h.
return len |
Definition at line 206 of file BitStream.h.
Definition at line 132 of file BitStream.h.
*Returns the distance to the next in stream at position pos *If no is found within len then len is returned *param stream A bit stream stored in array of unsigned integers *param pos A valid zero based position in the bit stream *param len size of search UINT32 pos |
Definition at line 128 of file BitStream.h.
* Read k bit number from stream at position pos* param stream A bit stream stored in array of unsigned integers* param pos A valid zero based position in the bit stream* param k Number of bits to read |
Definition at line 128 of file BitStream.h.
Definition at line 160 of file BitStream.h.
Definition at line 208 of file BitStream.h.
UINT32 * word = stream + (pos >> WordWidthLog) |
Definition at line 209 of file BitStream.h.