wavpack.h File Reference

#include <limits.h>
#include <stdint.h>
#include "libavutil/attributes.h"
#include "libavutil/intmath.h"

Go to the source code of this file.

Data Structures
struct	Decorr
struct	WvChannel

Macros
#define	MAX_TERMS   16
#define	MAX_TERM   8
#define	WV_HEADER_SIZE   32
#define	WV_MONO   0x00000004
#define	WV_JOINT_STEREO   0x00000010
#define	WV_CROSS_DECORR   0x00000020
#define	WV_FLOAT_DATA   0x00000080
#define	WV_INT32_DATA   0x00000100
#define	WV_FALSE_STEREO   0x40000000
#define	WV_DSD_DATA   0x80000000
#define	WV_HYBRID_MODE   0x00000008
#define	WV_HYBRID_SHAPE   0x00000008
#define	WV_HYBRID_BITRATE   0x00000200
#define	WV_HYBRID_BALANCE   0x00000400
#define	WV_INITIAL_BLOCK   0x00000800
#define	WV_FINAL_BLOCK   0x00001000
#define	WV_MONO_DATA   (WV_MONO | WV_FALSE_STEREO)
#define	WV_SINGLE_BLOCK   (WV_INITIAL_BLOCK | WV_FINAL_BLOCK)
#define	WV_FLT_SHIFT_ONES   0x01
#define	WV_FLT_SHIFT_SAME   0x02
#define	WV_FLT_SHIFT_SENT   0x04
#define	WV_FLT_ZERO_SENT   0x08
#define	WV_FLT_ZERO_SIGN   0x10
#define	WV_MAX_SAMPLES   150000
#define	GET_MED(n)   ((c->median[n] >> 4) + 1)
#define	DEC_MED(n)   c->median[n] -= ((int)(c->median[n] + (128U >> (n)) - 2) / (128 >> (n))) * 2U
#define	INC_MED(n)   c->median[n] += ((int)(c->median[n] + (128U >> (n)) ) / (128 >> (n))) * 5U
#define	UPDATE_WEIGHT_CLIP(weight, delta, samples, in)

Enumerations
enum	WP_ID_Flags { WP_IDF_MASK = 0x3F, WP_IDF_IGNORE = 0x20, WP_IDF_ODD = 0x40, WP_IDF_LONG = 0x80 }
enum	WP_ID {   WP_ID_DUMMY = 0, WP_ID_ENCINFO, WP_ID_DECTERMS, WP_ID_DECWEIGHTS,   WP_ID_DECSAMPLES, WP_ID_ENTROPY, WP_ID_HYBRID, WP_ID_SHAPING,   WP_ID_FLOATINFO, WP_ID_INT32INFO, WP_ID_DATA, WP_ID_CORR,   WP_ID_EXTRABITS, WP_ID_CHANINFO, WP_ID_DSD_DATA, WP_ID_SAMPLE_RATE = 0x27 }

Functions
static av_always_inline int	wp_exp2 (int16_t val)
static av_always_inline int	wp_log2 (uint32_t val)

Variables
static const int	wv_rates [16]
const uint8_t	ff_wp_exp2_table [256]
const uint8_t	ff_wp_log2_table [256]

Macro Definition Documentation

MAX_TERMS

#define MAX_TERMS   16

Definition at line 30 of file wavpack.h.

MAX_TERM

#define MAX_TERM   8

Definition at line 31 of file wavpack.h.

WV_HEADER_SIZE

#define WV_HEADER_SIZE   32

Definition at line 33 of file wavpack.h.

WV_MONO

#define WV_MONO   0x00000004

Definition at line 35 of file wavpack.h.

WV_JOINT_STEREO

#define WV_JOINT_STEREO   0x00000010

Definition at line 36 of file wavpack.h.

WV_CROSS_DECORR

#define WV_CROSS_DECORR   0x00000020

Definition at line 37 of file wavpack.h.

WV_FLOAT_DATA

#define WV_FLOAT_DATA   0x00000080

Definition at line 38 of file wavpack.h.

WV_INT32_DATA

#define WV_INT32_DATA   0x00000100

Definition at line 39 of file wavpack.h.

WV_FALSE_STEREO

#define WV_FALSE_STEREO   0x40000000

Definition at line 40 of file wavpack.h.

WV_DSD_DATA

#define WV_DSD_DATA   0x80000000

Definition at line 41 of file wavpack.h.

WV_HYBRID_MODE

#define WV_HYBRID_MODE   0x00000008

Definition at line 43 of file wavpack.h.

WV_HYBRID_SHAPE

#define WV_HYBRID_SHAPE   0x00000008

Definition at line 44 of file wavpack.h.

WV_HYBRID_BITRATE

#define WV_HYBRID_BITRATE   0x00000200

Definition at line 45 of file wavpack.h.

WV_HYBRID_BALANCE

#define WV_HYBRID_BALANCE   0x00000400

Definition at line 46 of file wavpack.h.

WV_INITIAL_BLOCK

#define WV_INITIAL_BLOCK   0x00000800

Definition at line 47 of file wavpack.h.

WV_FINAL_BLOCK

#define WV_FINAL_BLOCK   0x00001000

Definition at line 48 of file wavpack.h.

WV_MONO_DATA

#define WV_MONO_DATA   (WV_MONO | WV_FALSE_STEREO)

Definition at line 50 of file wavpack.h.

WV_SINGLE_BLOCK

#define WV_SINGLE_BLOCK   (WV_INITIAL_BLOCK | WV_FINAL_BLOCK)

Definition at line 52 of file wavpack.h.

WV_FLT_SHIFT_ONES

#define WV_FLT_SHIFT_ONES   0x01

Definition at line 54 of file wavpack.h.

WV_FLT_SHIFT_SAME

#define WV_FLT_SHIFT_SAME   0x02

Definition at line 55 of file wavpack.h.

WV_FLT_SHIFT_SENT

#define WV_FLT_SHIFT_SENT   0x04

Definition at line 56 of file wavpack.h.

WV_FLT_ZERO_SENT

#define WV_FLT_ZERO_SENT   0x08

Definition at line 57 of file wavpack.h.

WV_FLT_ZERO_SIGN

#define WV_FLT_ZERO_SIGN   0x10

Definition at line 58 of file wavpack.h.

WV_MAX_SAMPLES

#define WV_MAX_SAMPLES   150000

Definition at line 60 of file wavpack.h.

GET_MED

#define GET_MED

(

n

)

((c->median[n] >> 4) + 1)

Definition at line 106 of file wavpack.h.

DEC_MED

#define DEC_MED

(

n

)

c->median[n] -= ((int)(c->median[n] + (128U >> (n)) - 2) / (128 >> (n))) * 2U

Definition at line 107 of file wavpack.h.

INC_MED

#define INC_MED

(

n

)

c->median[n] += ((int)(c->median[n] + (128U >> (n)) ) / (128 >> (n))) * 5U

Definition at line 108 of file wavpack.h.

UPDATE_WEIGHT_CLIP

#define UPDATE_WEIGHT_CLIP	(		weight,
			delta,
			samples,
			in
	)

Value:

    if ((samples) && (in)) { \
        if (((samples) ^ (in)) < 0) { \
            (weight) -= (delta); \
            if ((weight) < -1024) \
                (weight) = -1024; \
        } else { \
            (weight) += (delta); \
            if ((weight) > 1024) \
                (weight) = 1024; \
        } \
    }

Definition at line 111 of file wavpack.h.

Enumeration Type Documentation

WP_ID_Flags

enum WP_ID_Flags

Enumerator
WP_IDF_MASK
WP_IDF_IGNORE
WP_IDF_ODD
WP_IDF_LONG

Definition at line 62 of file wavpack.h.

WP_ID

enum WP_ID

Enumerator
WP_ID_DUMMY
WP_ID_ENCINFO
WP_ID_DECTERMS
WP_ID_DECWEIGHTS
WP_ID_DECSAMPLES
WP_ID_ENTROPY
WP_ID_HYBRID
WP_ID_SHAPING
WP_ID_FLOATINFO
WP_ID_INT32INFO
WP_ID_DATA
WP_ID_CORR
WP_ID_EXTRABITS
WP_ID_CHANINFO
WP_ID_DSD_DATA
WP_ID_SAMPLE_RATE

Definition at line 69 of file wavpack.h.

Function Documentation

wp_exp2()

static av_always_inline int wp_exp2 ( int16_t  val )

static

Definition at line 133 of file wavpack.h.

Referenced by decorr_mono(), decorr_stereo(), decorr_stereo_quick(), update_error_limit(), and wavpack_decode_block().

wp_log2()

static av_always_inline int wp_log2 ( uint32_t  val )

static

Definition at line 150 of file wavpack.h.

Referenced by log2s(), and wv_get_value().

Variable Documentation

wv_rates

const int wv_rates[16]

static

Initial value:

= {
     6000,  8000,  9600, 11025, 12000, 16000,  22050, 24000,
    32000, 44100, 48000, 64000, 88200, 96000, 192000,     0
}

Definition at line 124 of file wavpack.h.

Referenced by set_samplerate(), and wavpack_decode_block().

ff_wp_exp2_table

const uint8_t ff_wp_exp2_table[256]

Definition at line 24 of file wavpackdata.c.

Referenced by wp_exp2().

ff_wp_log2_table

const uint8_t ff_wp_log2_table[256]

Definition at line 43 of file wavpackdata.c.

Referenced by log2sample(), and wp_log2().