MP3InternalsHuffman.cpp File Reference

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Classes
struct	huffcodetab
Functions
void	updateSideInfoForHuffman (MP3SideInfo &sideInfo, Boolean isMPEG2, unsigned char const *mainDataPtr, unsigned p23L0, unsigned p23L1, unsigned &part23Length0a, unsigned &part23Length0aTruncation, unsigned &part23Length0b, unsigned &part23Length0bTruncation, unsigned &part23Length1a, unsigned &part23Length1aTruncation, unsigned &part23Length1b, unsigned &part23Length1bTruncation)
static void	rsf_getline (char *line, unsigned max, unsigned char **fi)
static void	rsfscanf (unsigned char **fi, unsigned int *v)
static int	read_decoder_table (unsigned char *fi)
static void	initialize_huffman ()
static unsigned	rsf_get_scale_factors_1 (MP3SideInfo::gr_info_s_t *gr_info)
static unsigned	rsf_get_scale_factors_2 (MP3SideInfo::gr_info_s_t *gr_info)
static unsigned	getScaleFactorsLength (MP3SideInfo::gr_info_s_t *gr, Boolean isMPEG2)
static int	rsf_huffman_decoder (BitVector &bv, struct huffcodetab const *h, int *x, int *y, int *v, int *w)
void	MP3HuffmanDecode (MP3SideInfo::gr_info_s_t *gr, int isMPEG2, unsigned char const *fromBasePtr, unsigned fromBitOffset, unsigned fromLength, unsigned &scaleFactorsLength, MP3HuffmanEncodingInfo &hei)
int	getNextSample (unsigned char const *&fromPtr)
static void	rsf_huffman_encoder (BitVector &bv, struct huffcodetab *h, int x, int y, int v, int w)
unsigned	MP3HuffmanEncode (MP3SideInfo::gr_info_s_t const *gr, unsigned char const *fromPtr, unsigned char *toPtr, unsigned toBitOffset, unsigned numHuffBits)
static Boolean	lookupHuffmanTableEntry (struct huffcodetab const *h, HUFFBITS bits, unsigned bitsLength, unsigned char &xy)
static void	buildHuffmanEncodingTable (struct huffcodetab *h)
static void	lookupXYandPutBits (BitVector &bv, struct huffcodetab const *h, unsigned char xy)
static void	putLinbits (BitVector &bv, struct huffcodetab const *h, HUFFBITS bits)
FILE *	OpenTableFile (name) char *name
Variables
static unsigned	debugCount = 0
static struct huffcodetab	rsf_ht [HTN]
static unsigned char const	slen [2][16]
static unsigned char const	stab [3][6][4]
unsigned	n_slen2 []
unsigned	i_slen2 []
HUFFBITS	dmask = 1 << (SIZEOF_HUFFBITS*8-1)
unsigned int	hs = SIZEOF_HUFFBITS*8

---

Function Documentation

void updateSideInfoForHuffman	(	MP3SideInfo &	sideInfo,
		Boolean	isMPEG2,
		unsigned char const *	mainDataPtr,
		unsigned	p23L0,
		unsigned	p23L1,
		unsigned &	part23Length0a,
		unsigned &	part23Length0aTruncation,
		unsigned &	part23Length0b,
		unsigned &	part23Length0bTruncation,
		unsigned &	part23Length1a,
		unsigned &	part23Length1aTruncation,
		unsigned &	part23Length1b,
		unsigned &	part23Length1bTruncation
	)

Definition at line 45 of file MP3InternalsHuffman.cpp.

Referenced by updateSideInfoSizes().

static void rsf_getline	(	char *	line,
		unsigned	max,
		unsigned char **	fi
	)			[static]

Definition at line 312 of file MP3InternalsHuffman.cpp.

Referenced by read_decoder_table().

static void rsfscanf	(	unsigned char **	fi,
		unsigned int *	v
	)			[static]

Definition at line 324 of file MP3InternalsHuffman.cpp.

Referenced by read_decoder_table().

static int read_decoder_table

(

unsigned char *

fi

)

[static]

Definition at line 360 of file MP3InternalsHuffman.cpp.

Referenced by initialize_huffman().

static void initialize_huffman

(

)

[static]

Definition at line 440 of file MP3InternalsHuffman.cpp.

Referenced by MP3HuffmanDecode(), and MP3HuffmanEncode().

static unsigned rsf_get_scale_factors_1

(

MP3SideInfo::gr_info_s_t *

gr_info

)

[static]

Definition at line 468 of file MP3InternalsHuffman.cpp.

Referenced by getScaleFactorsLength().

static unsigned rsf_get_scale_factors_2

(

MP3SideInfo::gr_info_s_t *

gr_info

)

[static]

Definition at line 522 of file MP3InternalsHuffman.cpp.

Referenced by getScaleFactorsLength().

static unsigned getScaleFactorsLength	(	MP3SideInfo::gr_info_s_t *	gr,
		Boolean	isMPEG2
	)			[static]

Definition at line 556 of file MP3InternalsHuffman.cpp.

Referenced by MP3HuffmanDecode().

static int rsf_huffman_decoder	(	BitVector &	bv,
		struct huffcodetab const *	h,
		int *	x,
		int *	y,
		int *	v,
		int *	w
	)			[static]

Definition at line 637 of file MP3InternalsHuffman.cpp.

Referenced by MP3HuffmanDecode().

void MP3HuffmanDecode	(	MP3SideInfo::gr_info_s_t *	gr,
		int	isMPEG2,
		unsigned char const *	fromBasePtr,
		unsigned	fromBitOffset,
		unsigned	fromLength,
		unsigned &	scaleFactorsLength,
		MP3HuffmanEncodingInfo &	hei
	)

Definition at line 566 of file MP3InternalsHuffman.cpp.

Referenced by updateSideInfoForHuffman().

int getNextSample

(

unsigned char const *&

fromPtr

)

[inline]

Definition at line 720 of file MP3InternalsHuffman.cpp.

Referenced by MP3HuffmanEncode().

static void rsf_huffman_encoder	(	BitVector &	bv,
		struct huffcodetab *	h,
		int	x,
		int	y,
		int	v,
		int	w
	)			[static]

Definition at line 870 of file MP3InternalsHuffman.cpp.

Referenced by MP3HuffmanEncode().

unsigned MP3HuffmanEncode	(	MP3SideInfo::gr_info_s_t const *	gr,
		unsigned char const *	fromPtr,
		unsigned char *	toPtr,
		unsigned	toBitOffset,
		unsigned	numHuffBits
	)

Definition at line 740 of file MP3InternalsHuffman.cpp.

static Boolean lookupHuffmanTableEntry	(	struct huffcodetab const *	h,
		HUFFBITS	bits,
		unsigned	bitsLength,
		unsigned char &	xy
	)			[static]

Definition at line 789 of file MP3InternalsHuffman.cpp.

Referenced by buildHuffmanEncodingTable().

static void buildHuffmanEncodingTable

(

struct huffcodetab *

h

)

[static]

Definition at line 824 of file MP3InternalsHuffman.cpp.

Referenced by rsf_huffman_encoder().

static void lookupXYandPutBits	(	BitVector &	bv,
		struct huffcodetab const *	h,
		unsigned char	xy
	)			[static]

Definition at line 853 of file MP3InternalsHuffman.cpp.

Referenced by rsf_huffman_encoder().

static void putLinbits	(	BitVector &	bv,
		struct huffcodetab const *	h,
		HUFFBITS	bits
	)			[static]

Definition at line 865 of file MP3InternalsHuffman.cpp.

Referenced by rsf_huffman_encoder().

FILE* OpenTableFile

(

name

)

---

Variable Documentation

unsigned debugCount = 0 [static]

Definition at line 41 of file MP3InternalsHuffman.cpp.

struct huffcodetab rsf_ht[HTN] [static]

Definition at line 355 of file MP3InternalsHuffman.cpp.

Referenced by MP3HuffmanDecode(), MP3HuffmanEncode(), and read_decoder_table().

unsigned char const slen[2][16] [static]

Initial value:

 {
  {0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4},
  {0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3}
}

Definition at line 454 of file MP3InternalsHuffman.cpp.

Referenced by MSocketDevice::writeBlock().

unsigned char const stab[3][6][4] [static]

Initial value:

 {
  { { 6, 5, 5,5 } , { 6, 5, 7,3 } , { 11,10,0,0} ,
    { 7, 7, 7,0 } , { 6, 6, 6,3 } , {  8, 8,5,0} } ,
  { { 9, 9, 9,9 } , { 9, 9,12,6 } , { 18,18,0,0} ,
    {12,12,12,0 } , {12, 9, 9,6 } , { 15,12,9,0} } ,
  { { 6, 9, 9,9 } , { 6, 9,12,6 } , { 15,18,0,0} ,
    { 6,15,12,0 } , { 6,12, 9,6 } , {  6,18,9,0} }
}

Definition at line 459 of file MP3InternalsHuffman.cpp.

unsigned n_slen2[]

Definition at line 91 of file MP3Internals.cpp.

unsigned i_slen2[]

Definition at line 92 of file MP3Internals.cpp.

HUFFBITS dmask = 1 << (SIZEOF_HUFFBITS*8-1)

Definition at line 633 of file MP3InternalsHuffman.cpp.

unsigned int hs = SIZEOF_HUFFBITS*8

Definition at line 634 of file MP3InternalsHuffman.cpp.

Referenced by TerrestrialDeliverySystemDescriptor::HierarchyString(), and pts2ts().