dsp_audio.c File Reference

#include <linux/delay.h>
#include <linux/mISDNif.h>
#include <linux/mISDNdsp.h>
#include <linux/export.h>
#include "core.h"
#include "dsp.h"

Go to the source code of this file.

Macros
#define	AMI_MASK   0x55
#define	BIAS   0x84

Functions
	EXPORT_SYMBOL (dsp_audio_law_to_s32)
	EXPORT_SYMBOL (dsp_audio_s16_to_law)
void	dsp_audio_generate_law_tables (void)
void	dsp_audio_generate_s2law_table (void)
void	dsp_audio_generate_seven (void)
void	dsp_audio_generate_mix_table (void)
void	dsp_audio_generate_volume_changes (void)
void	dsp_change_volume (struct sk_buff *skb, int volume)

Variables
s32	dsp_audio_ulaw_to_s32 [256]
s32	dsp_audio_alaw_to_s32 [256]
s32 *	dsp_audio_law_to_s32
u8	dsp_audio_s16_to_law [65536]
u8	dsp_audio_alaw_to_ulaw [256]
u8	dsp_silence
u8	dsp_audio_seven2law [128]
u8	dsp_audio_law2seven [256]
u8	dsp_audio_mix_law [65536]

Macro Definition Documentation

#define AMI_MASK   0x55

Definition at line 42 of file dsp_audio.c.

#define BIAS   0x84

define the add-in bias for 16 bit samples

Definition at line 102 of file dsp_audio.c.

Function Documentation

void dsp_audio_generate_law_tables

(

void

)

Definition at line 153 of file dsp_audio.c.

void dsp_audio_generate_mix_table

(

void

)

Definition at line 251 of file dsp_audio.c.

void dsp_audio_generate_s2law_table

(

void

)

Definition at line 171 of file dsp_audio.c.

void dsp_audio_generate_seven

(

void

)

Definition at line 203 of file dsp_audio.c.

void dsp_audio_generate_volume_changes

(

void

)

Definition at line 316 of file dsp_audio.c.

void dsp_change_volume	(	struct sk_buff *	skb,
		int	volume
	)

Definition at line 403 of file dsp_audio.c.

EXPORT_SYMBOL

(

dsp_audio_law_to_s32

)

EXPORT_SYMBOL

(

dsp_audio_s16_to_law

)

Variable Documentation

s32 dsp_audio_alaw_to_s32[256]

Definition at line 22 of file dsp_audio.c.

u8 dsp_audio_alaw_to_ulaw[256]

Definition at line 32 of file dsp_audio.c.

u8 dsp_audio_law2seven[256]

Definition at line 196 of file dsp_audio.c.

s32* dsp_audio_law_to_s32

Definition at line 24 of file dsp_audio.c.

u8 dsp_audio_mix_law[65536]

Definition at line 244 of file dsp_audio.c.

u8 dsp_audio_s16_to_law[65536]

Definition at line 28 of file dsp_audio.c.

u8 dsp_audio_seven2law[128]

Definition at line 195 of file dsp_audio.c.

s32 dsp_audio_ulaw_to_s32[256]

Definition at line 20 of file dsp_audio.c.

u8 dsp_silence

Definition at line 35 of file dsp_audio.c.