libavcodec/pcm_tablegen.h File Reference

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

Go to the source code of this file.

Defines
#define	SIGN_BIT   (0x80)
#define	QUANT_MASK   (0xf)
#define	NSEGS   (8)
#define	SEG_SHIFT   (4)
#define	SEG_MASK   (0x70)
#define	BIAS   (0x84)
Functions
static av_cold int	alaw2linear (unsigned char a_val)
static av_cold int	ulaw2linear (unsigned char u_val)
static av_cold void	build_xlaw_table (uint8_t *linear_to_xlaw, int(*xlaw2linear)(unsigned char), int mask)
static void	pcm_alaw_tableinit (void)
static void	pcm_ulaw_tableinit (void)
Variables
static uint8_t	linear_to_alaw [16384]
static uint8_t	linear_to_ulaw [16384]

---

Define Documentation

#define BIAS   (0x84)

Definition at line 37 of file pcm_tablegen.h.

Referenced by ulaw2linear().

#define NSEGS   (8)

Definition at line 33 of file pcm_tablegen.h.

#define QUANT_MASK   (0xf)

Definition at line 32 of file pcm_tablegen.h.

Referenced by alaw2linear(), and ulaw2linear().

#define SEG_MASK   (0x70)

Definition at line 35 of file pcm_tablegen.h.

Referenced by alaw2linear().

#define SEG_SHIFT   (4)

Definition at line 34 of file pcm_tablegen.h.

Referenced by alaw2linear(), and ulaw2linear().

#define SIGN_BIT   (0x80)

Definition at line 31 of file pcm_tablegen.h.

Referenced by alaw2linear(), and ulaw2linear().

---

Function Documentation

static av_cold int alaw2linear

(

unsigned char

a_val

)

[static]

Definition at line 43 of file pcm_tablegen.h.

Referenced by pcm_alaw_tableinit(), and pcm_decode_init().

static av_cold void build_xlaw_table	(	uint8_t *	linear_to_xlaw,
		int(*)(unsigned char)	xlaw2linear,
		int	mask
	)			[static]

Definition at line 84 of file pcm_tablegen.h.

Referenced by pcm_alaw_tableinit(), and pcm_ulaw_tableinit().

static void pcm_alaw_tableinit

(

void

)

[static]

Definition at line 108 of file pcm_tablegen.h.

Referenced by main(), and pcm_encode_init().

static void pcm_ulaw_tableinit

(

void

)

[static]

Definition at line 113 of file pcm_tablegen.h.

Referenced by main(), and pcm_encode_init().

static av_cold int ulaw2linear

(

unsigned char

u_val

)

[static]

Definition at line 58 of file pcm_tablegen.h.

Referenced by pcm_decode_init(), and pcm_ulaw_tableinit().

---

Variable Documentation

uint8_t linear_to_alaw[16384] [static]

Definition at line 81 of file pcm_tablegen.h.

Referenced by main(), pcm_alaw_tableinit(), and pcm_encode_frame().

uint8_t linear_to_ulaw[16384] [static]

Definition at line 82 of file pcm_tablegen.h.

Referenced by main(), pcm_encode_frame(), and pcm_ulaw_tableinit().