Add mISDN DSP
Enable support for digital audio processing capability. This module may be used for special applications that require cross connecting of bchannels, conferencing, dtmf decoding echo cancelation, tone generation, and Blowfish encryption and decryption. It may use hardware features if available. Signed-off-by: Karsten Keil <kkeil@suse.de>
This commit is contained in:
Karsten Keil
parent
1b2b03f8e5
commit
960366cf8d
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@ -7,3 +7,21 @@ menuconfig MISDN
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help
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Enable support for the modular ISDN driver.
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if MISDN != n
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config MISDN_DSP
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tristate "Digital Audio Processing of transparent data"
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depends on MISDN
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help
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Enable support for digital audio processing capability.
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This module may be used for special applications that require
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cross connecting of bchannels, conferencing, dtmf decoding
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echo cancelation, tone generation, and Blowfish encryption and
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decryption.
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It may use hardware features if available.
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E.g. it is required for PBX4Linux. Go to http://isdn.eversberg.eu
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and get more informations about this module and it's usage.
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If unsure, say 'N'.
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source "drivers/isdn/hardware/mISDN/Kconfig"
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endif #MISDN
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@ -3,7 +3,9 @@
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#
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obj-$(CONFIG_MISDN) += mISDN_core.o
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obj-$(CONFIG_MISDN_DSP) += mISDN_dsp.o
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# multi objects
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mISDN_core-objs := core.o fsm.o socket.o hwchannel.o stack.o layer1.o layer2.o tei.o timerdev.o
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mISDN_dsp-objs := dsp_core.o dsp_cmx.o dsp_tones.o dsp_dtmf.o dsp_audio.o dsp_blowfish.o dsp_pipeline.o dsp_hwec.o
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@ -0,0 +1,263 @@
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/*
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* Audio support data for ISDN4Linux.
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*
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* Copyright 2002/2003 by Andreas Eversberg (jolly@eversberg.eu)
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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*/
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#define DEBUG_DSP_CTRL 0x0001
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#define DEBUG_DSP_CORE 0x0002
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#define DEBUG_DSP_DTMF 0x0004
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#define DEBUG_DSP_CMX 0x0010
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#define DEBUG_DSP_TONE 0x0020
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#define DEBUG_DSP_BLOWFISH 0x0040
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#define DEBUG_DSP_DELAY 0x0100
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#define DEBUG_DSP_DTMFCOEFF 0x8000 /* heavy output */
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/* options may be:
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*
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* bit 0 = use ulaw instead of alaw
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* bit 1 = enable hfc hardware accelleration for all channels
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*
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*/
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#define DSP_OPT_ULAW (1<<0)
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#define DSP_OPT_NOHARDWARE (1<<1)
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#include <linux/timer.h>
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#include <linux/workqueue.h>
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#include "dsp_ecdis.h"
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extern int dsp_options;
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extern int dsp_debug;
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extern int dsp_poll;
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extern int dsp_tics;
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extern spinlock_t dsp_lock;
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extern struct work_struct dsp_workq;
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extern u32 dsp_poll_diff; /* calculated fix-comma corrected poll value */
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/***************
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* audio stuff *
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***************/
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extern s32 dsp_audio_alaw_to_s32[256];
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extern s32 dsp_audio_ulaw_to_s32[256];
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extern s32 *dsp_audio_law_to_s32;
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extern u8 dsp_audio_s16_to_law[65536];
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extern u8 dsp_audio_alaw_to_ulaw[256];
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extern u8 dsp_audio_mix_law[65536];
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extern u8 dsp_audio_seven2law[128];
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extern u8 dsp_audio_law2seven[256];
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extern void dsp_audio_generate_law_tables(void);
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extern void dsp_audio_generate_s2law_table(void);
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extern void dsp_audio_generate_seven(void);
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extern void dsp_audio_generate_mix_table(void);
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extern void dsp_audio_generate_ulaw_samples(void);
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extern void dsp_audio_generate_volume_changes(void);
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extern u8 dsp_silence;
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/*************
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* cmx stuff *
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*************/
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#define MAX_POLL 256 /* maximum number of send-chunks */
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#define CMX_BUFF_SIZE 0x8000 /* must be 2**n (0x1000 about 1/2 second) */
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#define CMX_BUFF_HALF 0x4000 /* CMX_BUFF_SIZE / 2 */
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#define CMX_BUFF_MASK 0x7fff /* CMX_BUFF_SIZE - 1 */
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/* how many seconds will we check the lowest delay until the jitter buffer
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is reduced by that delay */
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#define MAX_SECONDS_JITTER_CHECK 5
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extern struct timer_list dsp_spl_tl;
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extern u32 dsp_spl_jiffies;
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/* the structure of conferences:
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*
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* each conference has a unique number, given by user space.
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* the conferences are linked in a chain.
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* each conference has members linked in a chain.
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* each dsplayer points to a member, each member points to a dsplayer.
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*/
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/* all members within a conference (this is linked 1:1 with the dsp) */
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struct dsp;
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struct dsp_conf_member {
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struct list_head list;
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struct dsp *dsp;
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};
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/* the list of all conferences */
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struct dsp_conf {
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struct list_head list;
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u32 id;
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/* all cmx stacks with the same ID are
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connected */
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struct list_head mlist;
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int software; /* conf is processed by software */
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int hardware; /* conf is processed by hardware */
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/* note: if both unset, has only one member */
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};
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/**************
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* DTMF stuff *
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**************/
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#define DSP_DTMF_NPOINTS 102
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#define ECHOCAN_BUFLEN (4*128)
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struct dsp_dtmf {
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int treshold; /* above this is dtmf (square of) */
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int software; /* dtmf uses software decoding */
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int hardware; /* dtmf uses hardware decoding */
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int size; /* number of bytes in buffer */
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signed short buffer[DSP_DTMF_NPOINTS];
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/* buffers one full dtmf frame */
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u8 lastwhat, lastdigit;
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int count;
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u8 digits[16]; /* just the dtmf result */
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};
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/******************
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* pipeline stuff *
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******************/
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struct dsp_pipeline {
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rwlock_t lock;
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struct list_head list;
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int inuse;
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};
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/***************
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* tones stuff *
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***************/
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struct dsp_tone {
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int software; /* tones are generated by software */
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int hardware; /* tones are generated by hardware */
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int tone;
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void *pattern;
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int count;
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int index;
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struct timer_list tl;
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};
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/*****************
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* general stuff *
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*****************/
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struct dsp {
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struct list_head list;
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struct mISDNchannel ch;
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struct mISDNchannel *up;
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unsigned char name[64];
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int b_active;
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int echo; /* echo is enabled */
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int rx_disabled; /* what the user wants */
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int rx_is_off; /* what the card is */
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int tx_mix;
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struct dsp_tone tone;
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struct dsp_dtmf dtmf;
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int tx_volume, rx_volume;
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/* queue for sending frames */
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struct work_struct workq;
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struct sk_buff_head sendq;
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int hdlc; /* if mode is hdlc */
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int data_pending; /* currently an unconfirmed frame */
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/* conference stuff */
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u32 conf_id;
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struct dsp_conf *conf;
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struct dsp_conf_member
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*member;
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/* buffer stuff */
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int rx_W; /* current write pos for data without timestamp */
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int rx_R; /* current read pos for transmit clock */
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int rx_init; /* if set, pointers will be adjusted first */
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int tx_W; /* current write pos for transmit data */
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int tx_R; /* current read pos for transmit clock */
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int rx_delay[MAX_SECONDS_JITTER_CHECK];
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int tx_delay[MAX_SECONDS_JITTER_CHECK];
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u8 tx_buff[CMX_BUFF_SIZE];
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u8 rx_buff[CMX_BUFF_SIZE];
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int last_tx; /* if set, we transmitted last poll interval */
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int cmx_delay; /* initial delay of buffers,
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or 0 for dynamic jitter buffer */
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int tx_dejitter; /* if set, dejitter tx buffer */
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int tx_data; /* enables tx-data of CMX to upper layer */
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/* hardware stuff */
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struct dsp_features features;
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int features_rx_off; /* set if rx_off is featured */
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int pcm_slot_rx; /* current PCM slot (or -1) */
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int pcm_bank_rx;
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int pcm_slot_tx;
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int pcm_bank_tx;
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int hfc_conf; /* unique id of current conference (or -1) */
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/* encryption stuff */
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int bf_enable;
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u32 bf_p[18];
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u32 bf_s[1024];
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int bf_crypt_pos;
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u8 bf_data_in[9];
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u8 bf_crypt_out[9];
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int bf_decrypt_in_pos;
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int bf_decrypt_out_pos;
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u8 bf_crypt_inring[16];
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u8 bf_data_out[9];
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int bf_sync;
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struct dsp_pipeline
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pipeline;
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};
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/* functions */
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extern void dsp_change_volume(struct sk_buff *skb, int volume);
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extern struct list_head dsp_ilist;
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extern struct list_head conf_ilist;
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extern void dsp_cmx_debug(struct dsp *dsp);
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extern void dsp_cmx_hardware(struct dsp_conf *conf, struct dsp *dsp);
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extern int dsp_cmx_conf(struct dsp *dsp, u32 conf_id);
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extern void dsp_cmx_receive(struct dsp *dsp, struct sk_buff *skb);
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extern void dsp_cmx_hdlc(struct dsp *dsp, struct sk_buff *skb);
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extern void dsp_cmx_send(void *arg);
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extern void dsp_cmx_transmit(struct dsp *dsp, struct sk_buff *skb);
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extern int dsp_cmx_del_conf_member(struct dsp *dsp);
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extern int dsp_cmx_del_conf(struct dsp_conf *conf);
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extern void dsp_dtmf_goertzel_init(struct dsp *dsp);
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extern void dsp_dtmf_hardware(struct dsp *dsp);
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extern u8 *dsp_dtmf_goertzel_decode(struct dsp *dsp, u8 *data, int len,
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int fmt);
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extern int dsp_tone(struct dsp *dsp, int tone);
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extern void dsp_tone_copy(struct dsp *dsp, u8 *data, int len);
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extern void dsp_tone_timeout(void *arg);
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extern void dsp_bf_encrypt(struct dsp *dsp, u8 *data, int len);
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extern void dsp_bf_decrypt(struct dsp *dsp, u8 *data, int len);
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extern int dsp_bf_init(struct dsp *dsp, const u8 *key, unsigned int keylen);
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extern void dsp_bf_cleanup(struct dsp *dsp);
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extern int dsp_pipeline_module_init(void);
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extern void dsp_pipeline_module_exit(void);
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extern int dsp_pipeline_init(struct dsp_pipeline *pipeline);
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extern void dsp_pipeline_destroy(struct dsp_pipeline *pipeline);
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extern int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg);
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extern void dsp_pipeline_process_tx(struct dsp_pipeline *pipeline, u8 *data,
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int len);
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extern void dsp_pipeline_process_rx(struct dsp_pipeline *pipeline, u8 *data,
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int len);
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@ -0,0 +1,434 @@
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/*
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* Audio support data for mISDN_dsp.
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*
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* Copyright 2002/2003 by Andreas Eversberg (jolly@eversberg.eu)
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* Rewritten by Peter
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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*/
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#include <linux/delay.h>
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#include <linux/mISDNif.h>
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#include <linux/mISDNdsp.h>
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#include "core.h"
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#include "dsp.h"
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/* ulaw[unsigned char] -> signed 16-bit */
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s32 dsp_audio_ulaw_to_s32[256];
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/* alaw[unsigned char] -> signed 16-bit */
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s32 dsp_audio_alaw_to_s32[256];
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s32 *dsp_audio_law_to_s32;
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EXPORT_SYMBOL(dsp_audio_law_to_s32);
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/* signed 16-bit -> law */
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u8 dsp_audio_s16_to_law[65536];
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EXPORT_SYMBOL(dsp_audio_s16_to_law);
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/* alaw -> ulaw */
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u8 dsp_audio_alaw_to_ulaw[256];
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/* ulaw -> alaw */
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u8 dsp_audio_ulaw_to_alaw[256];
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u8 dsp_silence;
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/*****************************************************
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* generate table for conversion of s16 to alaw/ulaw *
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*****************************************************/
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#define AMI_MASK 0x55
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static inline unsigned char linear2alaw(short int linear)
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{
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int mask;
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int seg;
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int pcm_val;
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static int seg_end[8] = {
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0xFF, 0x1FF, 0x3FF, 0x7FF, 0xFFF, 0x1FFF, 0x3FFF, 0x7FFF
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};
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pcm_val = linear;
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if (pcm_val >= 0) {
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/* Sign (7th) bit = 1 */
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mask = AMI_MASK | 0x80;
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} else {
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/* Sign bit = 0 */
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mask = AMI_MASK;
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pcm_val = -pcm_val;
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}
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/* Convert the scaled magnitude to segment number. */
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for (seg = 0; seg < 8; seg++) {
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if (pcm_val <= seg_end[seg])
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break;
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}
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/* Combine the sign, segment, and quantization bits. */
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return ((seg << 4) |
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((pcm_val >> ((seg) ? (seg + 3) : 4)) & 0x0F)) ^ mask;
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}
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static inline short int alaw2linear(unsigned char alaw)
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{
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int i;
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int seg;
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alaw ^= AMI_MASK;
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i = ((alaw & 0x0F) << 4) + 8 /* rounding error */;
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seg = (((int) alaw & 0x70) >> 4);
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if (seg)
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i = (i + 0x100) << (seg - 1);
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return (short int) ((alaw & 0x80) ? i : -i);
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}
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static inline short int ulaw2linear(unsigned char ulaw)
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{
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short mu, e, f, y;
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static short etab[] = {0, 132, 396, 924, 1980, 4092, 8316, 16764};
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mu = 255 - ulaw;
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e = (mu & 0x70) / 16;
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f = mu & 0x0f;
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y = f * (1 << (e + 3));
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y += etab[e];
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if (mu & 0x80)
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y = -y;
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return y;
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}
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#define BIAS 0x84 /*!< define the add-in bias for 16 bit samples */
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static unsigned char linear2ulaw(short sample)
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{
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static int exp_lut[256] = {
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0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
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4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
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6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
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7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7};
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int sign, exponent, mantissa;
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unsigned char ulawbyte;
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/* Get the sample into sign-magnitude. */
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sign = (sample >> 8) & 0x80; /* set aside the sign */
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if (sign != 0)
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sample = -sample; /* get magnitude */
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/* Convert from 16 bit linear to ulaw. */
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sample = sample + BIAS;
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exponent = exp_lut[(sample >> 7) & 0xFF];
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mantissa = (sample >> (exponent + 3)) & 0x0F;
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ulawbyte = ~(sign | (exponent << 4) | mantissa);
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return ulawbyte;
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}
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static int reverse_bits(int i)
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{
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int z, j;
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z = 0;
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|
||||
for (j = 0; j < 8; j++) {
|
||||
if ((i & (1 << j)) != 0)
|
||||
z |= 1 << (7 - j);
|
||||
}
|
||||
return z;
|
||||
}
|
||||
|
||||
|
||||
void dsp_audio_generate_law_tables(void)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < 256; i++)
|
||||
dsp_audio_alaw_to_s32[i] = alaw2linear(reverse_bits(i));
|
||||
|
||||
for (i = 0; i < 256; i++)
|
||||
dsp_audio_ulaw_to_s32[i] = ulaw2linear(reverse_bits(i));
|
||||
|
||||
for (i = 0; i < 256; i++) {
|
||||
dsp_audio_alaw_to_ulaw[i] =
|
||||
linear2ulaw(dsp_audio_alaw_to_s32[i]);
|
||||
dsp_audio_ulaw_to_alaw[i] =
|
||||
linear2alaw(dsp_audio_ulaw_to_s32[i]);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
dsp_audio_generate_s2law_table(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (dsp_options & DSP_OPT_ULAW) {
|
||||
/* generating ulaw-table */
|
||||
for (i = -32768; i < 32768; i++) {
|
||||
dsp_audio_s16_to_law[i & 0xffff] =
|
||||
reverse_bits(linear2ulaw(i));
|
||||
}
|
||||
} else {
|
||||
/* generating alaw-table */
|
||||
for (i = -32768; i < 32768; i++) {
|
||||
dsp_audio_s16_to_law[i & 0xffff] =
|
||||
reverse_bits(linear2alaw(i));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* the seven bit sample is the number of every second alaw-sample ordered by
|
||||
* aplitude. 0x00 is negative, 0x7f is positive amplitude.
|
||||
*/
|
||||
u8 dsp_audio_seven2law[128];
|
||||
u8 dsp_audio_law2seven[256];
|
||||
|
||||
/********************************************************************
|
||||
* generate table for conversion law from/to 7-bit alaw-like sample *
|
||||
********************************************************************/
|
||||
|
||||
void
|
||||
dsp_audio_generate_seven(void)
|
||||
{
|
||||
int i, j, k;
|
||||
u8 spl;
|
||||
u8 sorted_alaw[256];
|
||||
|
||||
/* generate alaw table, sorted by the linear value */
|
||||
for (i = 0; i < 256; i++) {
|
||||
j = 0;
|
||||
for (k = 0; k < 256; k++) {
|
||||
if (dsp_audio_alaw_to_s32[k]
|
||||
< dsp_audio_alaw_to_s32[i]) {
|
||||
j++;
|
||||
}
|
||||
}
|
||||
sorted_alaw[j] = i;
|
||||
}
|
||||
|
||||
/* generate tabels */
|
||||
for (i = 0; i < 256; i++) {
|
||||
/* spl is the source: the law-sample (converted to alaw) */
|
||||
spl = i;
|
||||
if (dsp_options & DSP_OPT_ULAW)
|
||||
spl = dsp_audio_ulaw_to_alaw[i];
|
||||
/* find the 7-bit-sample */
|
||||
for (j = 0; j < 256; j++) {
|
||||
if (sorted_alaw[j] == spl)
|
||||
break;
|
||||
}
|
||||
/* write 7-bit audio value */
|
||||
dsp_audio_law2seven[i] = j >> 1;
|
||||
}
|
||||
for (i = 0; i < 128; i++) {
|
||||
spl = sorted_alaw[i << 1];
|
||||
if (dsp_options & DSP_OPT_ULAW)
|
||||
spl = dsp_audio_alaw_to_ulaw[spl];
|
||||
dsp_audio_seven2law[i] = spl;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* mix 2*law -> law */
|
||||
u8 dsp_audio_mix_law[65536];
|
||||
|
||||
/******************************************************
|
||||
* generate mix table to mix two law samples into one *
|
||||
******************************************************/
|
||||
|
||||
void
|
||||
dsp_audio_generate_mix_table(void)
|
||||
{
|
||||
int i, j;
|
||||
s32 sample;
|
||||
|
||||
i = 0;
|
||||
while (i < 256) {
|
||||
j = 0;
|
||||
while (j < 256) {
|
||||
sample = dsp_audio_law_to_s32[i];
|
||||
sample += dsp_audio_law_to_s32[j];
|
||||
if (sample > 32767)
|
||||
sample = 32767;
|
||||
if (sample < -32768)
|
||||
sample = -32768;
|
||||
dsp_audio_mix_law[(i<<8)|j] =
|
||||
dsp_audio_s16_to_law[sample & 0xffff];
|
||||
j++;
|
||||
}
|
||||
i++;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*************************************
|
||||
* generate different volume changes *
|
||||
*************************************/
|
||||
|
||||
static u8 dsp_audio_reduce8[256];
|
||||
static u8 dsp_audio_reduce7[256];
|
||||
static u8 dsp_audio_reduce6[256];
|
||||
static u8 dsp_audio_reduce5[256];
|
||||
static u8 dsp_audio_reduce4[256];
|
||||
static u8 dsp_audio_reduce3[256];
|
||||
static u8 dsp_audio_reduce2[256];
|
||||
static u8 dsp_audio_reduce1[256];
|
||||
static u8 dsp_audio_increase1[256];
|
||||
static u8 dsp_audio_increase2[256];
|
||||
static u8 dsp_audio_increase3[256];
|
||||
static u8 dsp_audio_increase4[256];
|
||||
static u8 dsp_audio_increase5[256];
|
||||
static u8 dsp_audio_increase6[256];
|
||||
static u8 dsp_audio_increase7[256];
|
||||
static u8 dsp_audio_increase8[256];
|
||||
|
||||
static u8 *dsp_audio_volume_change[16] = {
|
||||
dsp_audio_reduce8,
|
||||
dsp_audio_reduce7,
|
||||
dsp_audio_reduce6,
|
||||
dsp_audio_reduce5,
|
||||
dsp_audio_reduce4,
|
||||
dsp_audio_reduce3,
|
||||
dsp_audio_reduce2,
|
||||
dsp_audio_reduce1,
|
||||
dsp_audio_increase1,
|
||||
dsp_audio_increase2,
|
||||
dsp_audio_increase3,
|
||||
dsp_audio_increase4,
|
||||
dsp_audio_increase5,
|
||||
dsp_audio_increase6,
|
||||
dsp_audio_increase7,
|
||||
dsp_audio_increase8,
|
||||
};
|
||||
|
||||
void
|
||||
dsp_audio_generate_volume_changes(void)
|
||||
{
|
||||
register s32 sample;
|
||||
int i;
|
||||
int num[] = { 110, 125, 150, 175, 200, 300, 400, 500 };
|
||||
int denum[] = { 100, 100, 100, 100, 100, 100, 100, 100 };
|
||||
|
||||
i = 0;
|
||||
while (i < 256) {
|
||||
dsp_audio_reduce8[i] = dsp_audio_s16_to_law[
|
||||
(dsp_audio_law_to_s32[i] * denum[7] / num[7]) & 0xffff];
|
||||
dsp_audio_reduce7[i] = dsp_audio_s16_to_law[
|
||||
(dsp_audio_law_to_s32[i] * denum[6] / num[6]) & 0xffff];
|
||||
dsp_audio_reduce6[i] = dsp_audio_s16_to_law[
|
||||
(dsp_audio_law_to_s32[i] * denum[5] / num[5]) & 0xffff];
|
||||
dsp_audio_reduce5[i] = dsp_audio_s16_to_law[
|
||||
(dsp_audio_law_to_s32[i] * denum[4] / num[4]) & 0xffff];
|
||||
dsp_audio_reduce4[i] = dsp_audio_s16_to_law[
|
||||
(dsp_audio_law_to_s32[i] * denum[3] / num[3]) & 0xffff];
|
||||
dsp_audio_reduce3[i] = dsp_audio_s16_to_law[
|
||||
(dsp_audio_law_to_s32[i] * denum[2] / num[2]) & 0xffff];
|
||||
dsp_audio_reduce2[i] = dsp_audio_s16_to_law[
|
||||
(dsp_audio_law_to_s32[i] * denum[1] / num[1]) & 0xffff];
|
||||
dsp_audio_reduce1[i] = dsp_audio_s16_to_law[
|
||||
(dsp_audio_law_to_s32[i] * denum[0] / num[0]) & 0xffff];
|
||||
sample = dsp_audio_law_to_s32[i] * num[0] / denum[0];
|
||||
if (sample < -32768)
|
||||
sample = -32768;
|
||||
else if (sample > 32767)
|
||||
sample = 32767;
|
||||
dsp_audio_increase1[i] = dsp_audio_s16_to_law[sample & 0xffff];
|
||||
sample = dsp_audio_law_to_s32[i] * num[1] / denum[1];
|
||||
if (sample < -32768)
|
||||
sample = -32768;
|
||||
else if (sample > 32767)
|
||||
sample = 32767;
|
||||
dsp_audio_increase2[i] = dsp_audio_s16_to_law[sample & 0xffff];
|
||||
sample = dsp_audio_law_to_s32[i] * num[2] / denum[2];
|
||||
if (sample < -32768)
|
||||
sample = -32768;
|
||||
else if (sample > 32767)
|
||||
sample = 32767;
|
||||
dsp_audio_increase3[i] = dsp_audio_s16_to_law[sample & 0xffff];
|
||||
sample = dsp_audio_law_to_s32[i] * num[3] / denum[3];
|
||||
if (sample < -32768)
|
||||
sample = -32768;
|
||||
else if (sample > 32767)
|
||||
sample = 32767;
|
||||
dsp_audio_increase4[i] = dsp_audio_s16_to_law[sample & 0xffff];
|
||||
sample = dsp_audio_law_to_s32[i] * num[4] / denum[4];
|
||||
if (sample < -32768)
|
||||
sample = -32768;
|
||||
else if (sample > 32767)
|
||||
sample = 32767;
|
||||
dsp_audio_increase5[i] = dsp_audio_s16_to_law[sample & 0xffff];
|
||||
sample = dsp_audio_law_to_s32[i] * num[5] / denum[5];
|
||||
if (sample < -32768)
|
||||
sample = -32768;
|
||||
else if (sample > 32767)
|
||||
sample = 32767;
|
||||
dsp_audio_increase6[i] = dsp_audio_s16_to_law[sample & 0xffff];
|
||||
sample = dsp_audio_law_to_s32[i] * num[6] / denum[6];
|
||||
if (sample < -32768)
|
||||
sample = -32768;
|
||||
else if (sample > 32767)
|
||||
sample = 32767;
|
||||
dsp_audio_increase7[i] = dsp_audio_s16_to_law[sample & 0xffff];
|
||||
sample = dsp_audio_law_to_s32[i] * num[7] / denum[7];
|
||||
if (sample < -32768)
|
||||
sample = -32768;
|
||||
else if (sample > 32767)
|
||||
sample = 32767;
|
||||
dsp_audio_increase8[i] = dsp_audio_s16_to_law[sample & 0xffff];
|
||||
|
||||
i++;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**************************************
|
||||
* change the volume of the given skb *
|
||||
**************************************/
|
||||
|
||||
/* this is a helper function for changing volume of skb. the range may be
|
||||
* -8 to 8, which is a shift to the power of 2. 0 == no volume, 3 == volume*8
|
||||
*/
|
||||
void
|
||||
dsp_change_volume(struct sk_buff *skb, int volume)
|
||||
{
|
||||
u8 *volume_change;
|
||||
int i, ii;
|
||||
u8 *p;
|
||||
int shift;
|
||||
|
||||
if (volume == 0)
|
||||
return;
|
||||
|
||||
/* get correct conversion table */
|
||||
if (volume < 0) {
|
||||
shift = volume + 8;
|
||||
if (shift < 0)
|
||||
shift = 0;
|
||||
} else {
|
||||
shift = volume + 7;
|
||||
if (shift > 15)
|
||||
shift = 15;
|
||||
}
|
||||
volume_change = dsp_audio_volume_change[shift];
|
||||
i = 0;
|
||||
ii = skb->len;
|
||||
p = skb->data;
|
||||
/* change volume */
|
||||
while (i < ii) {
|
||||
*p = volume_change[*p];
|
||||
p++;
|
||||
i++;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,65 @@
|
|||
/*
|
||||
* SpanDSP - a series of DSP components for telephony
|
||||
*
|
||||
* biquad.h - General telephony bi-quad section routines (currently this just
|
||||
* handles canonic/type 2 form)
|
||||
*
|
||||
* Written by Steve Underwood <steveu@coppice.org>
|
||||
*
|
||||
* Copyright (C) 2001 Steve Underwood
|
||||
*
|
||||
* All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*
|
||||
*/
|
||||
|
||||
struct biquad2_state {
|
||||
int32_t gain;
|
||||
int32_t a1;
|
||||
int32_t a2;
|
||||
int32_t b1;
|
||||
int32_t b2;
|
||||
|
||||
int32_t z1;
|
||||
int32_t z2;
|
||||
};
|
||||
|
||||
static inline void biquad2_init(struct biquad2_state *bq,
|
||||
int32_t gain, int32_t a1, int32_t a2, int32_t b1, int32_t b2)
|
||||
{
|
||||
bq->gain = gain;
|
||||
bq->a1 = a1;
|
||||
bq->a2 = a2;
|
||||
bq->b1 = b1;
|
||||
bq->b2 = b2;
|
||||
|
||||
bq->z1 = 0;
|
||||
bq->z2 = 0;
|
||||
}
|
||||
|
||||
static inline int16_t biquad2(struct biquad2_state *bq, int16_t sample)
|
||||
{
|
||||
int32_t y;
|
||||
int32_t z0;
|
||||
|
||||
z0 = sample*bq->gain + bq->z1*bq->a1 + bq->z2*bq->a2;
|
||||
y = z0 + bq->z1*bq->b1 + bq->z2*bq->b2;
|
||||
|
||||
bq->z2 = bq->z1;
|
||||
bq->z1 = z0 >> 15;
|
||||
y >>= 15;
|
||||
return y;
|
||||
}
|
||||
|
|
@ -0,0 +1,672 @@
|
|||
/*
|
||||
* Blowfish encryption/decryption for mISDN_dsp.
|
||||
*
|
||||
* Copyright Andreas Eversberg (jolly@eversberg.eu)
|
||||
*
|
||||
* This software may be used and distributed according to the terms
|
||||
* of the GNU General Public License, incorporated herein by reference.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/mISDNif.h>
|
||||
#include <linux/mISDNdsp.h>
|
||||
#include "core.h"
|
||||
#include "dsp.h"
|
||||
|
||||
/*
|
||||
* how to encode a sample stream to 64-bit blocks that will be encryped
|
||||
*
|
||||
* first of all, data is collected until a block of 9 samples are received.
|
||||
* of course, a packet may have much more than 9 sample, but is may have
|
||||
* not excacly the multiple of 9 samples. if there is a rest, the next
|
||||
* received data will complete the block.
|
||||
*
|
||||
* the block is then converted to 9 uLAW samples without the least sigificant
|
||||
* bit. the result is a 7-bit encoded sample.
|
||||
*
|
||||
* the samples will be reoganised to form 8 bytes of data:
|
||||
* (5(6) means: encoded sample no. 5, bit 6)
|
||||
*
|
||||
* 0(6) 0(5) 0(4) 0(3) 0(2) 0(1) 0(0) 1(6)
|
||||
* 1(5) 1(4) 1(3) 1(2) 1(1) 1(0) 2(6) 2(5)
|
||||
* 2(4) 2(3) 2(2) 2(1) 2(0) 3(6) 3(5) 3(4)
|
||||
* 3(3) 3(2) 3(1) 3(0) 4(6) 4(5) 4(4) 4(3)
|
||||
* 4(2) 4(1) 4(0) 5(6) 5(5) 5(4) 5(3) 5(2)
|
||||
* 5(1) 5(0) 6(6) 6(5) 6(4) 6(3) 6(2) 6(1)
|
||||
* 6(0) 7(6) 7(5) 7(4) 7(3) 7(2) 7(1) 7(0)
|
||||
* 8(6) 8(5) 8(4) 8(3) 8(2) 8(1) 8(0)
|
||||
*
|
||||
* the missing bit 0 of the last byte is filled with some
|
||||
* random noise, to fill all 8 bytes.
|
||||
*
|
||||
* the 8 bytes will be encrypted using blowfish.
|
||||
*
|
||||
* the result will be converted into 9 bytes. the bit 7 is used for
|
||||
* checksumme (CS) for sync (0, 1) and for the last bit:
|
||||
* (5(6) means: crypted byte 5, bit 6)
|
||||
*
|
||||
* 1 0(7) 0(6) 0(5) 0(4) 0(3) 0(2) 0(1)
|
||||
* 0 0(0) 1(7) 1(6) 1(5) 1(4) 1(3) 1(2)
|
||||
* 0 1(1) 1(0) 2(7) 2(6) 2(5) 2(4) 2(3)
|
||||
* 0 2(2) 2(1) 2(0) 3(7) 3(6) 3(5) 3(4)
|
||||
* 0 3(3) 3(2) 3(1) 3(0) 4(7) 4(6) 4(5)
|
||||
* CS 4(4) 4(3) 4(2) 4(1) 4(0) 5(7) 5(6)
|
||||
* CS 5(5) 5(4) 5(3) 5(2) 5(1) 5(0) 6(7)
|
||||
* CS 6(6) 6(5) 6(4) 6(3) 6(2) 6(1) 6(0)
|
||||
* 7(0) 7(6) 7(5) 7(4) 7(3) 7(2) 7(1) 7(0)
|
||||
*
|
||||
* the checksum is used to detect transmission errors and frame drops.
|
||||
*
|
||||
* synchronisation of received block is done by shifting the upper bit of each
|
||||
* byte (bit 7) to a shift register. if the rigister has the first five bits
|
||||
* (10000), this is used to find the sync. only if sync has been found, the
|
||||
* current block of 9 received bytes are decrypted. before that the check
|
||||
* sum is calculated. if it is incorrect the block is dropped.
|
||||
* this will avoid loud noise due to corrupt encrypted data.
|
||||
*
|
||||
* if the last block is corrupt, the current decoded block is repeated
|
||||
* until a valid block has been received.
|
||||
*/
|
||||
|
||||
/*
|
||||
* some blowfish parts are taken from the
|
||||
* crypto-api for faster implementation
|
||||
*/
|
||||
|
||||
struct bf_ctx {
|
||||
u32 p[18];
|
||||
u32 s[1024];
|
||||
};
|
||||
|
||||
static const u32 bf_pbox[16 + 2] = {
|
||||
0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
|
||||
0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
|
||||
0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
|
||||
0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
|
||||
0x9216d5d9, 0x8979fb1b,
|
||||
};
|
||||
|
||||
static const u32 bf_sbox[256 * 4] = {
|
||||
0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
|
||||
0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
|
||||
0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
|
||||
0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
|
||||
0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
|
||||
0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
|
||||
0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
|
||||
0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
|
||||
0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
|
||||
0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
|
||||
0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
|
||||
0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
|
||||
0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
|
||||
0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
|
||||
0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
|
||||
0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
|
||||
0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
|
||||
0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
|
||||
0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
|
||||
0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
|
||||
0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
|
||||
0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
|
||||
0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
|
||||
0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
|
||||
0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
|
||||
0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
|
||||
0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
|
||||
0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
|
||||
0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
|
||||
0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
|
||||
0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
|
||||
0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
|
||||
0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
|
||||
0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
|
||||
0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
|
||||
0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
|
||||
0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
|
||||
0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
|
||||
0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
|
||||
0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
|
||||
0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
|
||||
0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
|
||||
0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
|
||||
0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
|
||||
0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
|
||||
0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
|
||||
0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
|
||||
0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
|
||||
0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
|
||||
0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
|
||||
0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
|
||||
0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
|
||||
0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
|
||||
0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
|
||||
0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
|
||||
0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
|
||||
0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
|
||||
0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
|
||||
0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
|
||||
0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
|
||||
0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
|
||||
0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
|
||||
0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
|
||||
0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a,
|
||||
0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623,
|
||||
0xad6ea6b0, 0x49a7df7d, 0x9cee60b8, 0x8fedb266,
|
||||
0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1,
|
||||
0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e,
|
||||
0x3f54989a, 0x5b429d65, 0x6b8fe4d6, 0x99f73fd6,
|
||||
0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
|
||||
0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e,
|
||||
0x09686b3f, 0x3ebaefc9, 0x3c971814, 0x6b6a70a1,
|
||||
0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737,
|
||||
0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8,
|
||||
0xb03ada37, 0xf0500c0d, 0xf01c1f04, 0x0200b3ff,
|
||||
0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd,
|
||||
0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701,
|
||||
0x3ae5e581, 0x37c2dadc, 0xc8b57634, 0x9af3dda7,
|
||||
0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41,
|
||||
0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331,
|
||||
0x4e548b38, 0x4f6db908, 0x6f420d03, 0xf60a04bf,
|
||||
0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af,
|
||||
0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e,
|
||||
0x5512721f, 0x2e6b7124, 0x501adde6, 0x9f84cd87,
|
||||
0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
|
||||
0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2,
|
||||
0xef1c1847, 0x3215d908, 0xdd433b37, 0x24c2ba16,
|
||||
0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd,
|
||||
0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b,
|
||||
0x043556f1, 0xd7a3c76b, 0x3c11183b, 0x5924a509,
|
||||
0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
|
||||
0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3,
|
||||
0x771fe71c, 0x4e3d06fa, 0x2965dcb9, 0x99e71d0f,
|
||||
0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a,
|
||||
0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4,
|
||||
0xf2f74ea7, 0x361d2b3d, 0x1939260f, 0x19c27960,
|
||||
0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66,
|
||||
0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28,
|
||||
0xc332ddef, 0xbe6c5aa5, 0x65582185, 0x68ab9802,
|
||||
0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
|
||||
0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510,
|
||||
0x13cca830, 0xeb61bd96, 0x0334fe1e, 0xaa0363cf,
|
||||
0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14,
|
||||
0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e,
|
||||
0x648b1eaf, 0x19bdf0ca, 0xa02369b9, 0x655abb50,
|
||||
0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
|
||||
0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8,
|
||||
0xf837889a, 0x97e32d77, 0x11ed935f, 0x16681281,
|
||||
0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
|
||||
0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696,
|
||||
0xcdb30aeb, 0x532e3054, 0x8fd948e4, 0x6dbc3128,
|
||||
0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
|
||||
0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0,
|
||||
0x45eee2b6, 0xa3aaabea, 0xdb6c4f15, 0xfacb4fd0,
|
||||
0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105,
|
||||
0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250,
|
||||
0xcf62a1f2, 0x5b8d2646, 0xfc8883a0, 0xc1c7b6a3,
|
||||
0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285,
|
||||
0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00,
|
||||
0x58428d2a, 0x0c55f5ea, 0x1dadf43e, 0x233f7061,
|
||||
0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb,
|
||||
0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e,
|
||||
0xa6078084, 0x19f8509e, 0xe8efd855, 0x61d99735,
|
||||
0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc,
|
||||
0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9,
|
||||
0xdb73dbd3, 0x105588cd, 0x675fda79, 0xe3674340,
|
||||
0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20,
|
||||
0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7,
|
||||
0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934,
|
||||
0x411520f7, 0x7602d4f7, 0xbcf46b2e, 0xd4a20068,
|
||||
0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af,
|
||||
0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840,
|
||||
0x4d95fc1d, 0x96b591af, 0x70f4ddd3, 0x66a02f45,
|
||||
0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504,
|
||||
0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a,
|
||||
0x28507825, 0x530429f4, 0x0a2c86da, 0xe9b66dfb,
|
||||
0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee,
|
||||
0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6,
|
||||
0xaace1e7c, 0xd3375fec, 0xce78a399, 0x406b2a42,
|
||||
0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b,
|
||||
0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2,
|
||||
0x3a6efa74, 0xdd5b4332, 0x6841e7f7, 0xca7820fb,
|
||||
0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527,
|
||||
0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b,
|
||||
0x55a867bc, 0xa1159a58, 0xcca92963, 0x99e1db33,
|
||||
0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c,
|
||||
0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3,
|
||||
0x95c11548, 0xe4c66d22, 0x48c1133f, 0xc70f86dc,
|
||||
0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17,
|
||||
0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564,
|
||||
0x257b7834, 0x602a9c60, 0xdff8e8a3, 0x1f636c1b,
|
||||
0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115,
|
||||
0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922,
|
||||
0x85b2a20e, 0xe6ba0d99, 0xde720c8c, 0x2da2f728,
|
||||
0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0,
|
||||
0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e,
|
||||
0x0a476341, 0x992eff74, 0x3a6f6eab, 0xf4f8fd37,
|
||||
0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d,
|
||||
0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804,
|
||||
0xf1290dc7, 0xcc00ffa3, 0xb5390f92, 0x690fed0b,
|
||||
0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3,
|
||||
0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb,
|
||||
0x37392eb3, 0xcc115979, 0x8026e297, 0xf42e312d,
|
||||
0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c,
|
||||
0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350,
|
||||
0x1a6b1018, 0x11caedfa, 0x3d25bdd8, 0xe2e1c3c9,
|
||||
0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a,
|
||||
0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe,
|
||||
0x9dbc8057, 0xf0f7c086, 0x60787bf8, 0x6003604d,
|
||||
0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc,
|
||||
0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f,
|
||||
0x77a057be, 0xbde8ae24, 0x55464299, 0xbf582e61,
|
||||
0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2,
|
||||
0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9,
|
||||
0x7aeb2661, 0x8b1ddf84, 0x846a0e79, 0x915f95e2,
|
||||
0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c,
|
||||
0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e,
|
||||
0xb77f19b6, 0xe0a9dc09, 0x662d09a1, 0xc4324633,
|
||||
0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10,
|
||||
0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169,
|
||||
0xdcb7da83, 0x573906fe, 0xa1e2ce9b, 0x4fcd7f52,
|
||||
0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027,
|
||||
0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5,
|
||||
0xf0177a28, 0xc0f586e0, 0x006058aa, 0x30dc7d62,
|
||||
0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634,
|
||||
0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76,
|
||||
0x6f05e409, 0x4b7c0188, 0x39720a3d, 0x7c927c24,
|
||||
0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc,
|
||||
0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4,
|
||||
0x1e50ef5e, 0xb161e6f8, 0xa28514d9, 0x6c51133c,
|
||||
0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837,
|
||||
0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0,
|
||||
0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b,
|
||||
0x5cb0679e, 0x4fa33742, 0xd3822740, 0x99bc9bbe,
|
||||
0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
|
||||
0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4,
|
||||
0x5748ab2f, 0xbc946e79, 0xc6a376d2, 0x6549c2c8,
|
||||
0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
|
||||
0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304,
|
||||
0xa1fad5f0, 0x6a2d519a, 0x63ef8ce2, 0x9a86ee22,
|
||||
0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
|
||||
0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6,
|
||||
0x2826a2f9, 0xa73a3ae1, 0x4ba99586, 0xef5562e9,
|
||||
0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
|
||||
0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593,
|
||||
0xe990fd5a, 0x9e34d797, 0x2cf0b7d9, 0x022b8b51,
|
||||
0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
|
||||
0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c,
|
||||
0xe029ac71, 0xe019a5e6, 0x47b0acfd, 0xed93fa9b,
|
||||
0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
|
||||
0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c,
|
||||
0x15056dd4, 0x88f46dba, 0x03a16125, 0x0564f0bd,
|
||||
0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
|
||||
0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319,
|
||||
0x7533d928, 0xb155fdf5, 0x03563482, 0x8aba3cbb,
|
||||
0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
|
||||
0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991,
|
||||
0xea7a90c2, 0xfb3e7bce, 0x5121ce64, 0x774fbe32,
|
||||
0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
|
||||
0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166,
|
||||
0xb39a460a, 0x6445c0dd, 0x586cdecf, 0x1c20c8ae,
|
||||
0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
|
||||
0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5,
|
||||
0x72eacea8, 0xfa6484bb, 0x8d6612ae, 0xbf3c6f47,
|
||||
0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
|
||||
0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d,
|
||||
0x4040cb08, 0x4eb4e2cc, 0x34d2466a, 0x0115af84,
|
||||
0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
|
||||
0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8,
|
||||
0x611560b1, 0xe7933fdc, 0xbb3a792b, 0x344525bd,
|
||||
0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
|
||||
0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7,
|
||||
0x1a908749, 0xd44fbd9a, 0xd0dadecb, 0xd50ada38,
|
||||
0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
|
||||
0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c,
|
||||
0xbf97222c, 0x15e6fc2a, 0x0f91fc71, 0x9b941525,
|
||||
0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
|
||||
0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442,
|
||||
0xe0ec6e0e, 0x1698db3b, 0x4c98a0be, 0x3278e964,
|
||||
0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
|
||||
0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8,
|
||||
0xdf359f8d, 0x9b992f2e, 0xe60b6f47, 0x0fe3f11d,
|
||||
0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
|
||||
0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299,
|
||||
0xf523f357, 0xa6327623, 0x93a83531, 0x56cccd02,
|
||||
0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
|
||||
0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614,
|
||||
0xe6c6c7bd, 0x327a140a, 0x45e1d006, 0xc3f27b9a,
|
||||
0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
|
||||
0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b,
|
||||
0x53113ec0, 0x1640e3d3, 0x38abbd60, 0x2547adf0,
|
||||
0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
|
||||
0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e,
|
||||
0x1948c25c, 0x02fb8a8c, 0x01c36ae4, 0xd6ebe1f9,
|
||||
0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
|
||||
0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6,
|
||||
};
|
||||
|
||||
/*
|
||||
* Round loop unrolling macros, S is a pointer to a S-Box array
|
||||
* organized in 4 unsigned longs at a row.
|
||||
*/
|
||||
#define GET32_3(x) (((x) & 0xff))
|
||||
#define GET32_2(x) (((x) >> (8)) & (0xff))
|
||||
#define GET32_1(x) (((x) >> (16)) & (0xff))
|
||||
#define GET32_0(x) (((x) >> (24)) & (0xff))
|
||||
|
||||
#define bf_F(x) (((S[GET32_0(x)] + S[256 + GET32_1(x)]) ^ \
|
||||
S[512 + GET32_2(x)]) + S[768 + GET32_3(x)])
|
||||
|
||||
#define EROUND(a, b, n) do { b ^= P[n]; a ^= bf_F(b); } while (0)
|
||||
#define DROUND(a, b, n) do { a ^= bf_F(b); b ^= P[n]; } while (0)
|
||||
|
||||
|
||||
/*
|
||||
* encrypt isdn data frame
|
||||
* every block with 9 samples is encrypted
|
||||
*/
|
||||
void
|
||||
dsp_bf_encrypt(struct dsp *dsp, u8 *data, int len)
|
||||
{
|
||||
int i = 0, j = dsp->bf_crypt_pos;
|
||||
u8 *bf_data_in = dsp->bf_data_in;
|
||||
u8 *bf_crypt_out = dsp->bf_crypt_out;
|
||||
u32 *P = dsp->bf_p;
|
||||
u32 *S = dsp->bf_s;
|
||||
u32 yl, yr;
|
||||
u32 cs;
|
||||
u8 nibble;
|
||||
|
||||
while (i < len) {
|
||||
/* collect a block of 9 samples */
|
||||
if (j < 9) {
|
||||
bf_data_in[j] = *data;
|
||||
*data++ = bf_crypt_out[j++];
|
||||
i++;
|
||||
continue;
|
||||
}
|
||||
j = 0;
|
||||
/* transcode 9 samples xlaw to 8 bytes */
|
||||
yl = dsp_audio_law2seven[bf_data_in[0]];
|
||||
yl = (yl<<7) | dsp_audio_law2seven[bf_data_in[1]];
|
||||
yl = (yl<<7) | dsp_audio_law2seven[bf_data_in[2]];
|
||||
yl = (yl<<7) | dsp_audio_law2seven[bf_data_in[3]];
|
||||
nibble = dsp_audio_law2seven[bf_data_in[4]];
|
||||
yr = nibble;
|
||||
yl = (yl<<4) | (nibble>>3);
|
||||
yr = (yr<<7) | dsp_audio_law2seven[bf_data_in[5]];
|
||||
yr = (yr<<7) | dsp_audio_law2seven[bf_data_in[6]];
|
||||
yr = (yr<<7) | dsp_audio_law2seven[bf_data_in[7]];
|
||||
yr = (yr<<7) | dsp_audio_law2seven[bf_data_in[8]];
|
||||
yr = (yr<<1) | (bf_data_in[0] & 1);
|
||||
|
||||
/* fill unused bit with random noise of audio input */
|
||||
/* encrypt */
|
||||
|
||||
EROUND(yr, yl, 0);
|
||||
EROUND(yl, yr, 1);
|
||||
EROUND(yr, yl, 2);
|
||||
EROUND(yl, yr, 3);
|
||||
EROUND(yr, yl, 4);
|
||||
EROUND(yl, yr, 5);
|
||||
EROUND(yr, yl, 6);
|
||||
EROUND(yl, yr, 7);
|
||||
EROUND(yr, yl, 8);
|
||||
EROUND(yl, yr, 9);
|
||||
EROUND(yr, yl, 10);
|
||||
EROUND(yl, yr, 11);
|
||||
EROUND(yr, yl, 12);
|
||||
EROUND(yl, yr, 13);
|
||||
EROUND(yr, yl, 14);
|
||||
EROUND(yl, yr, 15);
|
||||
yl ^= P[16];
|
||||
yr ^= P[17];
|
||||
|
||||
/* calculate 3-bit checksumme */
|
||||
cs = yl ^ (yl>>3) ^ (yl>>6) ^ (yl>>9) ^ (yl>>12) ^ (yl>>15)
|
||||
^ (yl>>18) ^ (yl>>21) ^ (yl>>24) ^ (yl>>27) ^ (yl>>30)
|
||||
^ (yr<<2) ^ (yr>>1) ^ (yr>>4) ^ (yr>>7) ^ (yr>>10)
|
||||
^ (yr>>13) ^ (yr>>16) ^ (yr>>19) ^ (yr>>22) ^ (yr>>25)
|
||||
^ (yr>>28) ^ (yr>>31);
|
||||
|
||||
/*
|
||||
* transcode 8 crypted bytes to 9 data bytes with sync
|
||||
* and checksum information
|
||||
*/
|
||||
bf_crypt_out[0] = (yl>>25) | 0x80;
|
||||
bf_crypt_out[1] = (yl>>18) & 0x7f;
|
||||
bf_crypt_out[2] = (yl>>11) & 0x7f;
|
||||
bf_crypt_out[3] = (yl>>4) & 0x7f;
|
||||
bf_crypt_out[4] = ((yl<<3) & 0x78) | ((yr>>29) & 0x07);
|
||||
bf_crypt_out[5] = ((yr>>22) & 0x7f) | ((cs<<5) & 0x80);
|
||||
bf_crypt_out[6] = ((yr>>15) & 0x7f) | ((cs<<6) & 0x80);
|
||||
bf_crypt_out[7] = ((yr>>8) & 0x7f) | (cs<<7);
|
||||
bf_crypt_out[8] = yr;
|
||||
}
|
||||
|
||||
/* write current count */
|
||||
dsp->bf_crypt_pos = j;
|
||||
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* decrypt isdn data frame
|
||||
* every block with 9 bytes is decrypted
|
||||
*/
|
||||
void
|
||||
dsp_bf_decrypt(struct dsp *dsp, u8 *data, int len)
|
||||
{
|
||||
int i = 0;
|
||||
u8 j = dsp->bf_decrypt_in_pos;
|
||||
u8 k = dsp->bf_decrypt_out_pos;
|
||||
u8 *bf_crypt_inring = dsp->bf_crypt_inring;
|
||||
u8 *bf_data_out = dsp->bf_data_out;
|
||||
u16 sync = dsp->bf_sync;
|
||||
u32 *P = dsp->bf_p;
|
||||
u32 *S = dsp->bf_s;
|
||||
u32 yl, yr;
|
||||
u8 nibble;
|
||||
u8 cs, cs0, cs1, cs2;
|
||||
|
||||
while (i < len) {
|
||||
/*
|
||||
* shift upper bit and rotate data to buffer ring
|
||||
* send current decrypted data
|
||||
*/
|
||||
sync = (sync<<1) | ((*data)>>7);
|
||||
bf_crypt_inring[j++ & 15] = *data;
|
||||
*data++ = bf_data_out[k++];
|
||||
i++;
|
||||
if (k == 9)
|
||||
k = 0; /* repeat if no sync has been found */
|
||||
/* check if not in sync */
|
||||
if ((sync&0x1f0) != 0x100)
|
||||
continue;
|
||||
j -= 9;
|
||||
/* transcode receive data to 64 bit block of encrypted data */
|
||||
yl = bf_crypt_inring[j++ & 15];
|
||||
yl = (yl<<7) | bf_crypt_inring[j++ & 15]; /* bit7 = 0 */
|
||||
yl = (yl<<7) | bf_crypt_inring[j++ & 15]; /* bit7 = 0 */
|
||||
yl = (yl<<7) | bf_crypt_inring[j++ & 15]; /* bit7 = 0 */
|
||||
nibble = bf_crypt_inring[j++ & 15]; /* bit7 = 0 */
|
||||
yr = nibble;
|
||||
yl = (yl<<4) | (nibble>>3);
|
||||
cs2 = bf_crypt_inring[j++ & 15];
|
||||
yr = (yr<<7) | (cs2 & 0x7f);
|
||||
cs1 = bf_crypt_inring[j++ & 15];
|
||||
yr = (yr<<7) | (cs1 & 0x7f);
|
||||
cs0 = bf_crypt_inring[j++ & 15];
|
||||
yr = (yr<<7) | (cs0 & 0x7f);
|
||||
yr = (yr<<8) | bf_crypt_inring[j++ & 15];
|
||||
|
||||
/* calculate 3-bit checksumme */
|
||||
cs = yl ^ (yl>>3) ^ (yl>>6) ^ (yl>>9) ^ (yl>>12) ^ (yl>>15)
|
||||
^ (yl>>18) ^ (yl>>21) ^ (yl>>24) ^ (yl>>27) ^ (yl>>30)
|
||||
^ (yr<<2) ^ (yr>>1) ^ (yr>>4) ^ (yr>>7) ^ (yr>>10)
|
||||
^ (yr>>13) ^ (yr>>16) ^ (yr>>19) ^ (yr>>22) ^ (yr>>25)
|
||||
^ (yr>>28) ^ (yr>>31);
|
||||
|
||||
/* check if frame is valid */
|
||||
if ((cs&0x7) != (((cs2>>5)&4) | ((cs1>>6)&2) | (cs0 >> 7))) {
|
||||
if (dsp_debug & DEBUG_DSP_BLOWFISH)
|
||||
printk(KERN_DEBUG
|
||||
"DSP BLOWFISH: received corrupt frame, "
|
||||
"checksumme is not correct\n");
|
||||
continue;
|
||||
}
|
||||
|
||||
/* decrypt */
|
||||
yr ^= P[17];
|
||||
yl ^= P[16];
|
||||
DROUND(yl, yr, 15);
|
||||
DROUND(yr, yl, 14);
|
||||
DROUND(yl, yr, 13);
|
||||
DROUND(yr, yl, 12);
|
||||
DROUND(yl, yr, 11);
|
||||
DROUND(yr, yl, 10);
|
||||
DROUND(yl, yr, 9);
|
||||
DROUND(yr, yl, 8);
|
||||
DROUND(yl, yr, 7);
|
||||
DROUND(yr, yl, 6);
|
||||
DROUND(yl, yr, 5);
|
||||
DROUND(yr, yl, 4);
|
||||
DROUND(yl, yr, 3);
|
||||
DROUND(yr, yl, 2);
|
||||
DROUND(yl, yr, 1);
|
||||
DROUND(yr, yl, 0);
|
||||
|
||||
/* transcode 8 crypted bytes to 9 sample bytes */
|
||||
bf_data_out[0] = dsp_audio_seven2law[(yl>>25) & 0x7f];
|
||||
bf_data_out[1] = dsp_audio_seven2law[(yl>>18) & 0x7f];
|
||||
bf_data_out[2] = dsp_audio_seven2law[(yl>>11) & 0x7f];
|
||||
bf_data_out[3] = dsp_audio_seven2law[(yl>>4) & 0x7f];
|
||||
bf_data_out[4] = dsp_audio_seven2law[((yl<<3) & 0x78) |
|
||||
((yr>>29) & 0x07)];
|
||||
|
||||
bf_data_out[5] = dsp_audio_seven2law[(yr>>22) & 0x7f];
|
||||
bf_data_out[6] = dsp_audio_seven2law[(yr>>15) & 0x7f];
|
||||
bf_data_out[7] = dsp_audio_seven2law[(yr>>8) & 0x7f];
|
||||
bf_data_out[8] = dsp_audio_seven2law[(yr>>1) & 0x7f];
|
||||
k = 0; /* start with new decoded frame */
|
||||
}
|
||||
|
||||
/* write current count and sync */
|
||||
dsp->bf_decrypt_in_pos = j;
|
||||
dsp->bf_decrypt_out_pos = k;
|
||||
dsp->bf_sync = sync;
|
||||
}
|
||||
|
||||
|
||||
/* used to encrypt S and P boxes */
|
||||
static inline void
|
||||
encrypt_block(const u32 *P, const u32 *S, u32 *dst, u32 *src)
|
||||
{
|
||||
u32 yl = src[0];
|
||||
u32 yr = src[1];
|
||||
|
||||
EROUND(yr, yl, 0);
|
||||
EROUND(yl, yr, 1);
|
||||
EROUND(yr, yl, 2);
|
||||
EROUND(yl, yr, 3);
|
||||
EROUND(yr, yl, 4);
|
||||
EROUND(yl, yr, 5);
|
||||
EROUND(yr, yl, 6);
|
||||
EROUND(yl, yr, 7);
|
||||
EROUND(yr, yl, 8);
|
||||
EROUND(yl, yr, 9);
|
||||
EROUND(yr, yl, 10);
|
||||
EROUND(yl, yr, 11);
|
||||
EROUND(yr, yl, 12);
|
||||
EROUND(yl, yr, 13);
|
||||
EROUND(yr, yl, 14);
|
||||
EROUND(yl, yr, 15);
|
||||
|
||||
yl ^= P[16];
|
||||
yr ^= P[17];
|
||||
|
||||
dst[0] = yr;
|
||||
dst[1] = yl;
|
||||
}
|
||||
|
||||
/*
|
||||
* initialize the dsp for encryption and decryption using the same key
|
||||
* Calculates the blowfish S and P boxes for encryption and decryption.
|
||||
* The margin of keylen must be 4-56 bytes.
|
||||
* returns 0 if ok.
|
||||
*/
|
||||
int
|
||||
dsp_bf_init(struct dsp *dsp, const u8 *key, uint keylen)
|
||||
{
|
||||
short i, j, count;
|
||||
u32 data[2], temp;
|
||||
u32 *P = (u32 *)dsp->bf_p;
|
||||
u32 *S = (u32 *)dsp->bf_s;
|
||||
|
||||
if (keylen < 4 || keylen > 56)
|
||||
return 1;
|
||||
|
||||
/* Set dsp states */
|
||||
i = 0;
|
||||
while (i < 9) {
|
||||
dsp->bf_crypt_out[i] = 0xff;
|
||||
dsp->bf_data_out[i] = dsp_silence;
|
||||
i++;
|
||||
}
|
||||
dsp->bf_crypt_pos = 0;
|
||||
dsp->bf_decrypt_in_pos = 0;
|
||||
dsp->bf_decrypt_out_pos = 0;
|
||||
dsp->bf_sync = 0x1ff;
|
||||
dsp->bf_enable = 1;
|
||||
|
||||
/* Copy the initialization s-boxes */
|
||||
for (i = 0, count = 0; i < 256; i++)
|
||||
for (j = 0; j < 4; j++, count++)
|
||||
S[count] = bf_sbox[count];
|
||||
|
||||
/* Set the p-boxes */
|
||||
for (i = 0; i < 16 + 2; i++)
|
||||
P[i] = bf_pbox[i];
|
||||
|
||||
/* Actual subkey generation */
|
||||
for (j = 0, i = 0; i < 16 + 2; i++) {
|
||||
temp = (((u32)key[j] << 24) |
|
||||
((u32)key[(j + 1) % keylen] << 16) |
|
||||
((u32)key[(j + 2) % keylen] << 8) |
|
||||
((u32)key[(j + 3) % keylen]));
|
||||
|
||||
P[i] = P[i] ^ temp;
|
||||
j = (j + 4) % keylen;
|
||||
}
|
||||
|
||||
data[0] = 0x00000000;
|
||||
data[1] = 0x00000000;
|
||||
|
||||
for (i = 0; i < 16 + 2; i += 2) {
|
||||
encrypt_block(P, S, data, data);
|
||||
|
||||
P[i] = data[0];
|
||||
P[i + 1] = data[1];
|
||||
}
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
for (j = 0, count = i * 256; j < 256; j += 2, count += 2) {
|
||||
encrypt_block(P, S, data, data);
|
||||
|
||||
S[count] = data[0];
|
||||
S[count + 1] = data[1];
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* turn encryption off
|
||||
*/
|
||||
void
|
||||
dsp_bf_cleanup(struct dsp *dsp)
|
||||
{
|
||||
dsp->bf_enable = 0;
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,303 @@
|
|||
/*
|
||||
* DTMF decoder.
|
||||
*
|
||||
* Copyright by Andreas Eversberg (jolly@eversberg.eu)
|
||||
* based on different decoders such as ISDN4Linux
|
||||
*
|
||||
* This software may be used and distributed according to the terms
|
||||
* of the GNU General Public License, incorporated herein by reference.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/mISDNif.h>
|
||||
#include <linux/mISDNdsp.h>
|
||||
#include "core.h"
|
||||
#include "dsp.h"
|
||||
|
||||
#define NCOEFF 8 /* number of frequencies to be analyzed */
|
||||
|
||||
/* For DTMF recognition:
|
||||
* 2 * cos(2 * PI * k / N) precalculated for all k
|
||||
*/
|
||||
static u64 cos2pik[NCOEFF] =
|
||||
{
|
||||
/* k << 15 (source: hfc-4s/8s documentation (www.colognechip.de)) */
|
||||
55960, 53912, 51402, 48438, 38146, 32650, 26170, 18630
|
||||
};
|
||||
|
||||
/* digit matrix */
|
||||
static char dtmf_matrix[4][4] =
|
||||
{
|
||||
{'1', '2', '3', 'A'},
|
||||
{'4', '5', '6', 'B'},
|
||||
{'7', '8', '9', 'C'},
|
||||
{'*', '0', '#', 'D'}
|
||||
};
|
||||
|
||||
/* dtmf detection using goertzel algorithm
|
||||
* init function
|
||||
*/
|
||||
void dsp_dtmf_goertzel_init(struct dsp *dsp)
|
||||
{
|
||||
dsp->dtmf.size = 0;
|
||||
dsp->dtmf.lastwhat = '\0';
|
||||
dsp->dtmf.lastdigit = '\0';
|
||||
dsp->dtmf.count = 0;
|
||||
}
|
||||
|
||||
/* check for hardware or software features
|
||||
*/
|
||||
void dsp_dtmf_hardware(struct dsp *dsp)
|
||||
{
|
||||
int hardware = 1;
|
||||
|
||||
if (!dsp->features.hfc_dtmf)
|
||||
hardware = 0;
|
||||
|
||||
/* check for volume change */
|
||||
if (dsp->tx_volume) {
|
||||
if (dsp_debug & DEBUG_DSP_DTMF)
|
||||
printk(KERN_DEBUG "%s dsp %s cannot do hardware DTMF, "
|
||||
"because tx_volume is changed\n",
|
||||
__func__, dsp->name);
|
||||
hardware = 0;
|
||||
}
|
||||
if (dsp->rx_volume) {
|
||||
if (dsp_debug & DEBUG_DSP_DTMF)
|
||||
printk(KERN_DEBUG "%s dsp %s cannot do hardware DTMF, "
|
||||
"because rx_volume is changed\n",
|
||||
__func__, dsp->name);
|
||||
hardware = 0;
|
||||
}
|
||||
/* check if encryption is enabled */
|
||||
if (dsp->bf_enable) {
|
||||
if (dsp_debug & DEBUG_DSP_DTMF)
|
||||
printk(KERN_DEBUG "%s dsp %s cannot do hardware DTMF, "
|
||||
"because encryption is enabled\n",
|
||||
__func__, dsp->name);
|
||||
hardware = 0;
|
||||
}
|
||||
/* check if pipeline exists */
|
||||
if (dsp->pipeline.inuse) {
|
||||
if (dsp_debug & DEBUG_DSP_DTMF)
|
||||
printk(KERN_DEBUG "%s dsp %s cannot do hardware DTMF, "
|
||||
"because pipeline exists.\n",
|
||||
__func__, dsp->name);
|
||||
hardware = 0;
|
||||
}
|
||||
|
||||
dsp->dtmf.hardware = hardware;
|
||||
dsp->dtmf.software = !hardware;
|
||||
}
|
||||
|
||||
|
||||
/*************************************************************
|
||||
* calculate the coefficients of the given sample and decode *
|
||||
*************************************************************/
|
||||
|
||||
/* the given sample is decoded. if the sample is not long enough for a
|
||||
* complete frame, the decoding is finished and continued with the next
|
||||
* call of this function.
|
||||
*
|
||||
* the algorithm is very good for detection with a minimum of errors. i
|
||||
* tested it allot. it even works with very short tones (40ms). the only
|
||||
* disadvantage is, that it doesn't work good with different volumes of both
|
||||
* tones. this will happen, if accoustically coupled dialers are used.
|
||||
* it sometimes detects tones during speach, which is normal for decoders.
|
||||
* use sequences to given commands during calls.
|
||||
*
|
||||
* dtmf - points to a structure of the current dtmf state
|
||||
* spl and len - the sample
|
||||
* fmt - 0 = alaw, 1 = ulaw, 2 = coefficients from HFC DTMF hw-decoder
|
||||
*/
|
||||
|
||||
u8
|
||||
*dsp_dtmf_goertzel_decode(struct dsp *dsp, u8 *data, int len, int fmt)
|
||||
{
|
||||
u8 what;
|
||||
int size;
|
||||
signed short *buf;
|
||||
s32 sk, sk1, sk2;
|
||||
int k, n, i;
|
||||
s32 *hfccoeff;
|
||||
s32 result[NCOEFF], tresh, treshl;
|
||||
int lowgroup, highgroup;
|
||||
s64 cos2pik_;
|
||||
|
||||
dsp->dtmf.digits[0] = '\0';
|
||||
|
||||
/* Note: The function will loop until the buffer has not enough samples
|
||||
* left to decode a full frame.
|
||||
*/
|
||||
again:
|
||||
/* convert samples */
|
||||
size = dsp->dtmf.size;
|
||||
buf = dsp->dtmf.buffer;
|
||||
switch (fmt) {
|
||||
case 0: /* alaw */
|
||||
case 1: /* ulaw */
|
||||
while (size < DSP_DTMF_NPOINTS && len) {
|
||||
buf[size++] = dsp_audio_law_to_s32[*data++];
|
||||
len--;
|
||||
}
|
||||
break;
|
||||
|
||||
case 2: /* HFC coefficients */
|
||||
default:
|
||||
if (len < 64) {
|
||||
if (len > 0)
|
||||
printk(KERN_ERR "%s: coefficients have invalid "
|
||||
"size. (is=%d < must=%d)\n",
|
||||
__func__, len, 64);
|
||||
return dsp->dtmf.digits;
|
||||
}
|
||||
hfccoeff = (s32 *)data;
|
||||
for (k = 0; k < NCOEFF; k++) {
|
||||
sk2 = (*hfccoeff++)>>4;
|
||||
sk = (*hfccoeff++)>>4;
|
||||
if (sk > 32767 || sk < -32767 || sk2 > 32767
|
||||
|| sk2 < -32767)
|
||||
printk(KERN_WARNING
|
||||
"DTMF-Detection overflow\n");
|
||||
/* compute |X(k)|**2 */
|
||||
result[k] =
|
||||
(sk * sk) -
|
||||
(((cos2pik[k] * sk) >> 15) * sk2) +
|
||||
(sk2 * sk2);
|
||||
}
|
||||
data += 64;
|
||||
len -= 64;
|
||||
goto coefficients;
|
||||
break;
|
||||
}
|
||||
dsp->dtmf.size = size;
|
||||
|
||||
if (size < DSP_DTMF_NPOINTS)
|
||||
return dsp->dtmf.digits;
|
||||
|
||||
dsp->dtmf.size = 0;
|
||||
|
||||
/* now we have a full buffer of signed long samples - we do goertzel */
|
||||
for (k = 0; k < NCOEFF; k++) {
|
||||
sk = 0;
|
||||
sk1 = 0;
|
||||
sk2 = 0;
|
||||
buf = dsp->dtmf.buffer;
|
||||
cos2pik_ = cos2pik[k];
|
||||
for (n = 0; n < DSP_DTMF_NPOINTS; n++) {
|
||||
sk = ((cos2pik_*sk1)>>15) - sk2 + (*buf++);
|
||||
sk2 = sk1;
|
||||
sk1 = sk;
|
||||
}
|
||||
sk >>= 8;
|
||||
sk2 >>= 8;
|
||||
if (sk > 32767 || sk < -32767 || sk2 > 32767 || sk2 < -32767)
|
||||
printk(KERN_WARNING "DTMF-Detection overflow\n");
|
||||
/* compute |X(k)|**2 */
|
||||
result[k] =
|
||||
(sk * sk) -
|
||||
(((cos2pik[k] * sk) >> 15) * sk2) +
|
||||
(sk2 * sk2);
|
||||
}
|
||||
|
||||
/* our (squared) coefficients have been calculated, we need to process
|
||||
* them.
|
||||
*/
|
||||
coefficients:
|
||||
tresh = 0;
|
||||
for (i = 0; i < NCOEFF; i++) {
|
||||
if (result[i] < 0)
|
||||
result[i] = 0;
|
||||
if (result[i] > dsp->dtmf.treshold) {
|
||||
if (result[i] > tresh)
|
||||
tresh = result[i];
|
||||
}
|
||||
}
|
||||
|
||||
if (tresh == 0) {
|
||||
what = 0;
|
||||
goto storedigit;
|
||||
}
|
||||
|
||||
if (dsp_debug & DEBUG_DSP_DTMFCOEFF)
|
||||
printk(KERN_DEBUG "a %3d %3d %3d %3d %3d %3d %3d %3d"
|
||||
" tr:%3d r %3d %3d %3d %3d %3d %3d %3d %3d\n",
|
||||
result[0]/10000, result[1]/10000, result[2]/10000,
|
||||
result[3]/10000, result[4]/10000, result[5]/10000,
|
||||
result[6]/10000, result[7]/10000, tresh/10000,
|
||||
result[0]/(tresh/100), result[1]/(tresh/100),
|
||||
result[2]/(tresh/100), result[3]/(tresh/100),
|
||||
result[4]/(tresh/100), result[5]/(tresh/100),
|
||||
result[6]/(tresh/100), result[7]/(tresh/100));
|
||||
|
||||
/* calc digit (lowgroup/highgroup) */
|
||||
lowgroup = -1;
|
||||
highgroup = -1;
|
||||
treshl = tresh >> 3; /* tones which are not on, must be below 9 dB */
|
||||
tresh = tresh >> 2; /* touchtones must match within 6 dB */
|
||||
for (i = 0; i < NCOEFF; i++) {
|
||||
if (result[i] < treshl)
|
||||
continue; /* ignore */
|
||||
if (result[i] < tresh) {
|
||||
lowgroup = -1;
|
||||
highgroup = -1;
|
||||
break; /* noise inbetween */
|
||||
}
|
||||
/* good level found. This is allowed only one time per group */
|
||||
if (i < NCOEFF/2) {
|
||||
/* lowgroup */
|
||||
if (lowgroup >= 0) {
|
||||
/* Bad. Another tone found. */
|
||||
lowgroup = -1;
|
||||
break;
|
||||
} else
|
||||
lowgroup = i;
|
||||
} else {
|
||||
/* higroup */
|
||||
if (highgroup >= 0) {
|
||||
/* Bad. Another tone found. */
|
||||
highgroup = -1;
|
||||
break;
|
||||
} else
|
||||
highgroup = i-(NCOEFF/2);
|
||||
}
|
||||
}
|
||||
|
||||
/* get digit or null */
|
||||
what = 0;
|
||||
if (lowgroup >= 0 && highgroup >= 0)
|
||||
what = dtmf_matrix[lowgroup][highgroup];
|
||||
|
||||
storedigit:
|
||||
if (what && (dsp_debug & DEBUG_DSP_DTMF))
|
||||
printk(KERN_DEBUG "DTMF what: %c\n", what);
|
||||
|
||||
if (dsp->dtmf.lastwhat != what)
|
||||
dsp->dtmf.count = 0;
|
||||
|
||||
/* the tone (or no tone) must remain 3 times without change */
|
||||
if (dsp->dtmf.count == 2) {
|
||||
if (dsp->dtmf.lastdigit != what) {
|
||||
dsp->dtmf.lastdigit = what;
|
||||
if (what) {
|
||||
if (dsp_debug & DEBUG_DSP_DTMF)
|
||||
printk(KERN_DEBUG "DTMF digit: %c\n",
|
||||
what);
|
||||
if ((strlen(dsp->dtmf.digits)+1)
|
||||
< sizeof(dsp->dtmf.digits)) {
|
||||
dsp->dtmf.digits[strlen(
|
||||
dsp->dtmf.digits)+1] = '\0';
|
||||
dsp->dtmf.digits[strlen(
|
||||
dsp->dtmf.digits)] = what;
|
||||
}
|
||||
}
|
||||
}
|
||||
} else
|
||||
dsp->dtmf.count++;
|
||||
|
||||
dsp->dtmf.lastwhat = what;
|
||||
|
||||
goto again;
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,110 @@
|
|||
/*
|
||||
* SpanDSP - a series of DSP components for telephony
|
||||
*
|
||||
* ec_disable_detector.h - A detector which should eventually meet the
|
||||
* G.164/G.165 requirements for detecting the
|
||||
* 2100Hz echo cancellor disable tone.
|
||||
*
|
||||
* Written by Steve Underwood <steveu@coppice.org>
|
||||
*
|
||||
* Copyright (C) 2001 Steve Underwood
|
||||
*
|
||||
* All rights reserved.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "dsp_biquad.h"
|
||||
|
||||
struct ec_disable_detector_state {
|
||||
struct biquad2_state notch;
|
||||
int notch_level;
|
||||
int channel_level;
|
||||
int tone_present;
|
||||
int tone_cycle_duration;
|
||||
int good_cycles;
|
||||
int hit;
|
||||
};
|
||||
|
||||
|
||||
#define FALSE 0
|
||||
#define TRUE (!FALSE)
|
||||
|
||||
static inline void
|
||||
echo_can_disable_detector_init(struct ec_disable_detector_state *det)
|
||||
{
|
||||
/* Elliptic notch */
|
||||
/* This is actually centred at 2095Hz, but gets the balance we want, due
|
||||
to the asymmetric walls of the notch */
|
||||
biquad2_init(&det->notch,
|
||||
(int32_t) (-0.7600000*32768.0),
|
||||
(int32_t) (-0.1183852*32768.0),
|
||||
(int32_t) (-0.5104039*32768.0),
|
||||
(int32_t) (0.1567596*32768.0),
|
||||
(int32_t) (1.0000000*32768.0));
|
||||
|
||||
det->channel_level = 0;
|
||||
det->notch_level = 0;
|
||||
det->tone_present = FALSE;
|
||||
det->tone_cycle_duration = 0;
|
||||
det->good_cycles = 0;
|
||||
det->hit = 0;
|
||||
}
|
||||
/*- End of function --------------------------------------------------------*/
|
||||
|
||||
static inline int
|
||||
echo_can_disable_detector_update(struct ec_disable_detector_state *det,
|
||||
int16_t amp)
|
||||
{
|
||||
int16_t notched;
|
||||
|
||||
notched = biquad2(&det->notch, amp);
|
||||
/* Estimate the overall energy in the channel, and the energy in
|
||||
the notch (i.e. overall channel energy - tone energy => noise).
|
||||
Use abs instead of multiply for speed (is it really faster?).
|
||||
Damp the overall energy a little more for a stable result.
|
||||
Damp the notch energy a little less, so we don't damp out the
|
||||
blip every time the phase reverses */
|
||||
det->channel_level += ((abs(amp) - det->channel_level) >> 5);
|
||||
det->notch_level += ((abs(notched) - det->notch_level) >> 4);
|
||||
if (det->channel_level > 280) {
|
||||
/* There is adequate energy in the channel.
|
||||
Is it mostly at 2100Hz? */
|
||||
if (det->notch_level*6 < det->channel_level) {
|
||||
/* The notch says yes, so we have the tone. */
|
||||
if (!det->tone_present) {
|
||||
/* Do we get a kick every 450+-25ms? */
|
||||
if (det->tone_cycle_duration >= 425*8
|
||||
&& det->tone_cycle_duration <= 475*8) {
|
||||
det->good_cycles++;
|
||||
if (det->good_cycles > 2)
|
||||
det->hit = TRUE;
|
||||
}
|
||||
det->tone_cycle_duration = 0;
|
||||
}
|
||||
det->tone_present = TRUE;
|
||||
} else
|
||||
det->tone_present = FALSE;
|
||||
det->tone_cycle_duration++;
|
||||
} else {
|
||||
det->tone_present = FALSE;
|
||||
det->tone_cycle_duration = 0;
|
||||
det->good_cycles = 0;
|
||||
}
|
||||
return det->hit;
|
||||
}
|
||||
/*- End of function --------------------------------------------------------*/
|
||||
/*- End of file ------------------------------------------------------------*/
|
||||
|
|
@ -0,0 +1,138 @@
|
|||
/*
|
||||
* dsp_hwec.c:
|
||||
* builtin mISDN dsp pipeline element for enabling the hw echocanceller
|
||||
*
|
||||
* Copyright (C) 2007, Nadi Sarrar
|
||||
*
|
||||
* Nadi Sarrar <nadi@beronet.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the Free
|
||||
* Software Foundation; either version 2 of the License, or (at your option)
|
||||
* any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along with
|
||||
* this program; if not, write to the Free Software Foundation, Inc., 59
|
||||
* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||
*
|
||||
* The full GNU General Public License is included in this distribution in the
|
||||
* file called LICENSE.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/mISDNdsp.h>
|
||||
#include <linux/mISDNif.h>
|
||||
#include "core.h"
|
||||
#include "dsp.h"
|
||||
#include "dsp_hwec.h"
|
||||
|
||||
static struct mISDN_dsp_element_arg args[] = {
|
||||
{ "deftaps", "128", "Set the number of taps of cancellation." },
|
||||
};
|
||||
|
||||
static struct mISDN_dsp_element dsp_hwec_p = {
|
||||
.name = "hwec",
|
||||
.new = NULL,
|
||||
.free = NULL,
|
||||
.process_tx = NULL,
|
||||
.process_rx = NULL,
|
||||
.num_args = sizeof(args) / sizeof(struct mISDN_dsp_element_arg),
|
||||
.args = args,
|
||||
};
|
||||
struct mISDN_dsp_element *dsp_hwec = &dsp_hwec_p;
|
||||
|
||||
void dsp_hwec_enable(struct dsp *dsp, const char *arg)
|
||||
{
|
||||
int deftaps = 128,
|
||||
len;
|
||||
struct mISDN_ctrl_req cq;
|
||||
|
||||
if (!dsp) {
|
||||
printk(KERN_ERR "%s: failed to enable hwec: dsp is NULL\n",
|
||||
__func__);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!arg)
|
||||
goto _do;
|
||||
|
||||
len = strlen(arg);
|
||||
if (!len)
|
||||
goto _do;
|
||||
|
||||
{
|
||||
char _dup[len + 1];
|
||||
char *dup, *tok, *name, *val;
|
||||
int tmp;
|
||||
|
||||
strcpy(_dup, arg);
|
||||
dup = _dup;
|
||||
|
||||
while ((tok = strsep(&dup, ","))) {
|
||||
if (!strlen(tok))
|
||||
continue;
|
||||
name = strsep(&tok, "=");
|
||||
val = tok;
|
||||
|
||||
if (!val)
|
||||
continue;
|
||||
|
||||
if (!strcmp(name, "deftaps")) {
|
||||
if (sscanf(val, "%d", &tmp) == 1)
|
||||
deftaps = tmp;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
_do:
|
||||
printk(KERN_DEBUG "%s: enabling hwec with deftaps=%d\n",
|
||||
__func__, deftaps);
|
||||
memset(&cq, 0, sizeof(cq));
|
||||
cq.op = MISDN_CTRL_HFC_ECHOCAN_ON;
|
||||
cq.p1 = deftaps;
|
||||
if (!dsp->ch.peer->ctrl(&dsp->ch, CONTROL_CHANNEL, &cq)) {
|
||||
printk(KERN_DEBUG "%s: CONTROL_CHANNEL failed\n",
|
||||
__func__);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
void dsp_hwec_disable(struct dsp *dsp)
|
||||
{
|
||||
struct mISDN_ctrl_req cq;
|
||||
|
||||
if (!dsp) {
|
||||
printk(KERN_ERR "%s: failed to disable hwec: dsp is NULL\n",
|
||||
__func__);
|
||||
return;
|
||||
}
|
||||
|
||||
printk(KERN_DEBUG "%s: disabling hwec\n", __func__);
|
||||
memset(&cq, 0, sizeof(cq));
|
||||
cq.op = MISDN_CTRL_HFC_ECHOCAN_OFF;
|
||||
if (!dsp->ch.peer->ctrl(&dsp->ch, CONTROL_CHANNEL, &cq)) {
|
||||
printk(KERN_DEBUG "%s: CONTROL_CHANNEL failed\n",
|
||||
__func__);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
int dsp_hwec_init(void)
|
||||
{
|
||||
mISDN_dsp_element_register(dsp_hwec);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void dsp_hwec_exit(void)
|
||||
{
|
||||
mISDN_dsp_element_unregister(dsp_hwec);
|
||||
}
|
||||
|
||||
|
|
@ -0,0 +1,10 @@
|
|||
/*
|
||||
* dsp_hwec.h
|
||||
*/
|
||||
|
||||
extern struct mISDN_dsp_element *dsp_hwec;
|
||||
extern void dsp_hwec_enable(struct dsp *dsp, const char *arg);
|
||||
extern void dsp_hwec_disable(struct dsp *dsp);
|
||||
extern int dsp_hwec_init(void);
|
||||
extern void dsp_hwec_exit(void);
|
||||
|
||||
|
|
@ -0,0 +1,348 @@
|
|||
/*
|
||||
* dsp_pipeline.c: pipelined audio processing
|
||||
*
|
||||
* Copyright (C) 2007, Nadi Sarrar
|
||||
*
|
||||
* Nadi Sarrar <nadi@beronet.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the Free
|
||||
* Software Foundation; either version 2 of the License, or (at your option)
|
||||
* any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but WITHOUT
|
||||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along with
|
||||
* this program; if not, write to the Free Software Foundation, Inc., 59
|
||||
* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||
*
|
||||
* The full GNU General Public License is included in this distribution in the
|
||||
* file called LICENSE.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/mISDNif.h>
|
||||
#include <linux/mISDNdsp.h>
|
||||
#include "dsp.h"
|
||||
#include "dsp_hwec.h"
|
||||
|
||||
/* uncomment for debugging */
|
||||
/*#define PIPELINE_DEBUG*/
|
||||
|
||||
struct dsp_pipeline_entry {
|
||||
struct mISDN_dsp_element *elem;
|
||||
void *p;
|
||||
struct list_head list;
|
||||
};
|
||||
struct dsp_element_entry {
|
||||
struct mISDN_dsp_element *elem;
|
||||
struct device dev;
|
||||
struct list_head list;
|
||||
};
|
||||
|
||||
static LIST_HEAD(dsp_elements);
|
||||
|
||||
/* sysfs */
|
||||
static struct class *elements_class;
|
||||
|
||||
static ssize_t
|
||||
attr_show_args(struct device *dev, struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct mISDN_dsp_element *elem = dev_get_drvdata(dev);
|
||||
ssize_t len = 0;
|
||||
int i = 0;
|
||||
|
||||
*buf = 0;
|
||||
for (; i < elem->num_args; ++i)
|
||||
len = sprintf(buf, "%sName: %s\n%s%s%sDescription: %s\n"
|
||||
"\n", buf,
|
||||
elem->args[i].name,
|
||||
elem->args[i].def ? "Default: " : "",
|
||||
elem->args[i].def ? elem->args[i].def : "",
|
||||
elem->args[i].def ? "\n" : "",
|
||||
elem->args[i].desc);
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
static struct device_attribute element_attributes[] = {
|
||||
__ATTR(args, 0444, attr_show_args, NULL),
|
||||
};
|
||||
|
||||
int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
|
||||
{
|
||||
struct dsp_element_entry *entry;
|
||||
int ret, i;
|
||||
|
||||
if (!elem)
|
||||
return -EINVAL;
|
||||
|
||||
entry = kzalloc(sizeof(struct dsp_element_entry), GFP_KERNEL);
|
||||
if (!entry)
|
||||
return -ENOMEM;
|
||||
|
||||
entry->elem = elem;
|
||||
|
||||
entry->dev.class = elements_class;
|
||||
dev_set_drvdata(&entry->dev, elem);
|
||||
snprintf(entry->dev.bus_id, BUS_ID_SIZE, elem->name);
|
||||
ret = device_register(&entry->dev);
|
||||
if (ret) {
|
||||
printk(KERN_ERR "%s: failed to register %s\n",
|
||||
__func__, elem->name);
|
||||
goto err1;
|
||||
}
|
||||
|
||||
for (i = 0; i < (sizeof(element_attributes)
|
||||
/ sizeof(struct device_attribute)); ++i)
|
||||
ret = device_create_file(&entry->dev,
|
||||
&element_attributes[i]);
|
||||
if (ret) {
|
||||
printk(KERN_ERR "%s: failed to create device file\n",
|
||||
__func__);
|
||||
goto err2;
|
||||
}
|
||||
|
||||
list_add_tail(&entry->list, &dsp_elements);
|
||||
|
||||
printk(KERN_DEBUG "%s: %s registered\n", __func__, elem->name);
|
||||
|
||||
return 0;
|
||||
|
||||
err2:
|
||||
device_unregister(&entry->dev);
|
||||
err1:
|
||||
kfree(entry);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL(mISDN_dsp_element_register);
|
||||
|
||||
void mISDN_dsp_element_unregister(struct mISDN_dsp_element *elem)
|
||||
{
|
||||
struct dsp_element_entry *entry, *n;
|
||||
|
||||
if (!elem)
|
||||
return;
|
||||
|
||||
list_for_each_entry_safe(entry, n, &dsp_elements, list)
|
||||
if (entry->elem == elem) {
|
||||
list_del(&entry->list);
|
||||
device_unregister(&entry->dev);
|
||||
kfree(entry);
|
||||
printk(KERN_DEBUG "%s: %s unregistered\n",
|
||||
__func__, elem->name);
|
||||
return;
|
||||
}
|
||||
printk(KERN_ERR "%s: element %s not in list.\n", __func__, elem->name);
|
||||
}
|
||||
EXPORT_SYMBOL(mISDN_dsp_element_unregister);
|
||||
|
||||
int dsp_pipeline_module_init(void)
|
||||
{
|
||||
elements_class = class_create(THIS_MODULE, "dsp_pipeline");
|
||||
if (IS_ERR(elements_class))
|
||||
return PTR_ERR(elements_class);
|
||||
|
||||
#ifdef PIPELINE_DEBUG
|
||||
printk(KERN_DEBUG "%s: dsp pipeline module initialized\n", __func__);
|
||||
#endif
|
||||
|
||||
dsp_hwec_init();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void dsp_pipeline_module_exit(void)
|
||||
{
|
||||
struct dsp_element_entry *entry, *n;
|
||||
|
||||
dsp_hwec_exit();
|
||||
|
||||
class_destroy(elements_class);
|
||||
|
||||
list_for_each_entry_safe(entry, n, &dsp_elements, list) {
|
||||
list_del(&entry->list);
|
||||
printk(KERN_WARNING "%s: element was still registered: %s\n",
|
||||
__func__, entry->elem->name);
|
||||
kfree(entry);
|
||||
}
|
||||
|
||||
printk(KERN_DEBUG "%s: dsp pipeline module exited\n", __func__);
|
||||
}
|
||||
|
||||
int dsp_pipeline_init(struct dsp_pipeline *pipeline)
|
||||
{
|
||||
if (!pipeline)
|
||||
return -EINVAL;
|
||||
|
||||
INIT_LIST_HEAD(&pipeline->list);
|
||||
|
||||
#ifdef PIPELINE_DEBUG
|
||||
printk(KERN_DEBUG "%s: dsp pipeline ready\n", __func__);
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void _dsp_pipeline_destroy(struct dsp_pipeline *pipeline)
|
||||
{
|
||||
struct dsp_pipeline_entry *entry, *n;
|
||||
|
||||
list_for_each_entry_safe(entry, n, &pipeline->list, list) {
|
||||
list_del(&entry->list);
|
||||
if (entry->elem == dsp_hwec)
|
||||
dsp_hwec_disable(container_of(pipeline, struct dsp,
|
||||
pipeline));
|
||||
else
|
||||
entry->elem->free(entry->p);
|
||||
kfree(entry);
|
||||
}
|
||||
}
|
||||
|
||||
void dsp_pipeline_destroy(struct dsp_pipeline *pipeline)
|
||||
{
|
||||
|
||||
if (!pipeline)
|
||||
return;
|
||||
|
||||
_dsp_pipeline_destroy(pipeline);
|
||||
|
||||
#ifdef PIPELINE_DEBUG
|
||||
printk(KERN_DEBUG "%s: dsp pipeline destroyed\n", __func__);
|
||||
#endif
|
||||
}
|
||||
|
||||
int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg)
|
||||
{
|
||||
int len, incomplete = 0, found = 0;
|
||||
char *dup, *tok, *name, *args;
|
||||
struct dsp_element_entry *entry, *n;
|
||||
struct dsp_pipeline_entry *pipeline_entry;
|
||||
struct mISDN_dsp_element *elem;
|
||||
|
||||
if (!pipeline)
|
||||
return -EINVAL;
|
||||
|
||||
if (!list_empty(&pipeline->list))
|
||||
_dsp_pipeline_destroy(pipeline);
|
||||
|
||||
if (!cfg)
|
||||
return 0;
|
||||
|
||||
len = strlen(cfg);
|
||||
if (!len)
|
||||
return 0;
|
||||
|
||||
dup = kmalloc(len + 1, GFP_KERNEL);
|
||||
if (!dup)
|
||||
return 0;
|
||||
strcpy(dup, cfg);
|
||||
while ((tok = strsep(&dup, "|"))) {
|
||||
if (!strlen(tok))
|
||||
continue;
|
||||
name = strsep(&tok, "(");
|
||||
args = strsep(&tok, ")");
|
||||
if (args && !*args)
|
||||
args = 0;
|
||||
|
||||
list_for_each_entry_safe(entry, n, &dsp_elements, list)
|
||||
if (!strcmp(entry->elem->name, name)) {
|
||||
elem = entry->elem;
|
||||
|
||||
pipeline_entry = kmalloc(sizeof(struct
|
||||
dsp_pipeline_entry), GFP_KERNEL);
|
||||
if (!pipeline_entry) {
|
||||
printk(KERN_DEBUG "%s: failed to add "
|
||||
"entry to pipeline: %s (out of "
|
||||
"memory)\n", __func__, elem->name);
|
||||
incomplete = 1;
|
||||
goto _out;
|
||||
}
|
||||
pipeline_entry->elem = elem;
|
||||
|
||||
if (elem == dsp_hwec) {
|
||||
/* This is a hack to make the hwec
|
||||
available as a pipeline module */
|
||||
dsp_hwec_enable(container_of(pipeline,
|
||||
struct dsp, pipeline), args);
|
||||
list_add_tail(&pipeline_entry->list,
|
||||
&pipeline->list);
|
||||
} else {
|
||||
pipeline_entry->p = elem->new(args);
|
||||
if (pipeline_entry->p) {
|
||||
list_add_tail(&pipeline_entry->
|
||||
list, &pipeline->list);
|
||||
#ifdef PIPELINE_DEBUG
|
||||
printk(KERN_DEBUG "%s: created "
|
||||
"instance of %s%s%s\n",
|
||||
__func__, name, args ?
|
||||
" with args " : "", args ?
|
||||
args : "");
|
||||
#endif
|
||||
} else {
|
||||
printk(KERN_DEBUG "%s: failed "
|
||||
"to add entry to pipeline: "
|
||||
"%s (new() returned NULL)\n",
|
||||
__func__, elem->name);
|
||||
kfree(pipeline_entry);
|
||||
incomplete = 1;
|
||||
}
|
||||
}
|
||||
found = 1;
|
||||
break;
|
||||
}
|
||||
|
||||
if (found)
|
||||
found = 0;
|
||||
else {
|
||||
printk(KERN_DEBUG "%s: element not found, skipping: "
|
||||
"%s\n", __func__, name);
|
||||
incomplete = 1;
|
||||
}
|
||||
}
|
||||
|
||||
_out:
|
||||
if (!list_empty(&pipeline->list))
|
||||
pipeline->inuse = 1;
|
||||
else
|
||||
pipeline->inuse = 0;
|
||||
|
||||
#ifdef PIPELINE_DEBUG
|
||||
printk(KERN_DEBUG "%s: dsp pipeline built%s: %s\n",
|
||||
__func__, incomplete ? " incomplete" : "", cfg);
|
||||
#endif
|
||||
kfree(dup);
|
||||
return 0;
|
||||
}
|
||||
|
||||
void dsp_pipeline_process_tx(struct dsp_pipeline *pipeline, u8 *data, int len)
|
||||
{
|
||||
struct dsp_pipeline_entry *entry;
|
||||
|
||||
if (!pipeline)
|
||||
return;
|
||||
|
||||
list_for_each_entry(entry, &pipeline->list, list)
|
||||
if (entry->elem->process_tx)
|
||||
entry->elem->process_tx(entry->p, data, len);
|
||||
}
|
||||
|
||||
void dsp_pipeline_process_rx(struct dsp_pipeline *pipeline, u8 *data, int len)
|
||||
{
|
||||
struct dsp_pipeline_entry *entry;
|
||||
|
||||
if (!pipeline)
|
||||
return;
|
||||
|
||||
list_for_each_entry_reverse(entry, &pipeline->list, list)
|
||||
if (entry->elem->process_rx)
|
||||
entry->elem->process_rx(entry->p, data, len);
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,551 @@
|
|||
/*
|
||||
* Audio support data for ISDN4Linux.
|
||||
*
|
||||
* Copyright Andreas Eversberg (jolly@eversberg.eu)
|
||||
*
|
||||
* This software may be used and distributed according to the terms
|
||||
* of the GNU General Public License, incorporated herein by reference.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/mISDNif.h>
|
||||
#include <linux/mISDNdsp.h>
|
||||
#include "core.h"
|
||||
#include "dsp.h"
|
||||
|
||||
|
||||
#define DATA_S sample_silence
|
||||
#define SIZE_S (&sizeof_silence)
|
||||
#define DATA_GA sample_german_all
|
||||
#define SIZE_GA (&sizeof_german_all)
|
||||
#define DATA_GO sample_german_old
|
||||
#define SIZE_GO (&sizeof_german_old)
|
||||
#define DATA_DT sample_american_dialtone
|
||||
#define SIZE_DT (&sizeof_american_dialtone)
|
||||
#define DATA_RI sample_american_ringing
|
||||
#define SIZE_RI (&sizeof_american_ringing)
|
||||
#define DATA_BU sample_american_busy
|
||||
#define SIZE_BU (&sizeof_american_busy)
|
||||
#define DATA_S1 sample_special1
|
||||
#define SIZE_S1 (&sizeof_special1)
|
||||
#define DATA_S2 sample_special2
|
||||
#define SIZE_S2 (&sizeof_special2)
|
||||
#define DATA_S3 sample_special3
|
||||
#define SIZE_S3 (&sizeof_special3)
|
||||
|
||||
/***************/
|
||||
/* tones loops */
|
||||
/***************/
|
||||
|
||||
/* all tones are alaw encoded */
|
||||
/* the last sample+1 is in phase with the first sample. the error is low */
|
||||
|
||||
static u8 sample_german_all[] = {
|
||||
0x80, 0xab, 0x81, 0x6d, 0xfd, 0xdd, 0x5d, 0x9d,
|
||||
0x4d, 0xd1, 0x89, 0x88, 0xd0, 0x4c, 0x9c, 0x5c,
|
||||
0xdc, 0xfc, 0x6c,
|
||||
0x80, 0xab, 0x81, 0x6d, 0xfd, 0xdd, 0x5d, 0x9d,
|
||||
0x4d, 0xd1, 0x89, 0x88, 0xd0, 0x4c, 0x9c, 0x5c,
|
||||
0xdc, 0xfc, 0x6c,
|
||||
0x80, 0xab, 0x81, 0x6d, 0xfd, 0xdd, 0x5d, 0x9d,
|
||||
0x4d, 0xd1, 0x89, 0x88, 0xd0, 0x4c, 0x9c, 0x5c,
|
||||
0xdc, 0xfc, 0x6c,
|
||||
0x80, 0xab, 0x81, 0x6d, 0xfd, 0xdd, 0x5d, 0x9d,
|
||||
0x4d, 0xd1, 0x89, 0x88, 0xd0, 0x4c, 0x9c, 0x5c,
|
||||
0xdc, 0xfc, 0x6c,
|
||||
};
|
||||
static u32 sizeof_german_all = sizeof(sample_german_all);
|
||||
|
||||
static u8 sample_german_old[] = {
|
||||
0xec, 0x68, 0xe1, 0x6d, 0x6d, 0x91, 0x51, 0xed,
|
||||
0x6d, 0x01, 0x1e, 0x10, 0x0c, 0x90, 0x60, 0x70,
|
||||
0x8c,
|
||||
0xec, 0x68, 0xe1, 0x6d, 0x6d, 0x91, 0x51, 0xed,
|
||||
0x6d, 0x01, 0x1e, 0x10, 0x0c, 0x90, 0x60, 0x70,
|
||||
0x8c,
|
||||
0xec, 0x68, 0xe1, 0x6d, 0x6d, 0x91, 0x51, 0xed,
|
||||
0x6d, 0x01, 0x1e, 0x10, 0x0c, 0x90, 0x60, 0x70,
|
||||
0x8c,
|
||||
0xec, 0x68, 0xe1, 0x6d, 0x6d, 0x91, 0x51, 0xed,
|
||||
0x6d, 0x01, 0x1e, 0x10, 0x0c, 0x90, 0x60, 0x70,
|
||||
0x8c,
|
||||
};
|
||||
static u32 sizeof_german_old = sizeof(sample_german_old);
|
||||
|
||||
static u8 sample_american_dialtone[] = {
|
||||
0x2a, 0x18, 0x90, 0x6c, 0x4c, 0xbc, 0x4c, 0x6c,
|
||||
0x10, 0x58, 0x32, 0xb9, 0x31, 0x2d, 0x8d, 0x0d,
|
||||
0x8d, 0x2d, 0x31, 0x99, 0x0f, 0x28, 0x60, 0xf0,
|
||||
0xd0, 0x50, 0xd0, 0x30, 0x60, 0x08, 0x8e, 0x67,
|
||||
0x09, 0x19, 0x21, 0xe1, 0xd9, 0xb9, 0x29, 0x67,
|
||||
0x83, 0x02, 0xce, 0xbe, 0xee, 0x1a, 0x1b, 0xef,
|
||||
0xbf, 0xcf, 0x03, 0x82, 0x66, 0x28, 0xb8, 0xd8,
|
||||
0xe0, 0x20, 0x18, 0x08, 0x66, 0x8f, 0x09, 0x61,
|
||||
0x31, 0xd1, 0x51, 0xd1, 0xf1, 0x61, 0x29, 0x0e,
|
||||
0x98, 0x30, 0x2c, 0x8c, 0x0c, 0x8c, 0x2c, 0x30,
|
||||
0xb8, 0x33, 0x59, 0x11, 0x6d, 0x4d, 0xbd, 0x4d,
|
||||
0x6d, 0x91, 0x19,
|
||||
};
|
||||
static u32 sizeof_american_dialtone = sizeof(sample_american_dialtone);
|
||||
|
||||
static u8 sample_american_ringing[] = {
|
||||
0x2a, 0xe0, 0xac, 0x0c, 0xbc, 0x4c, 0x8c, 0x90,
|
||||
0x48, 0xc7, 0xc1, 0xed, 0xcd, 0x4d, 0xcd, 0xed,
|
||||
0xc1, 0xb7, 0x08, 0x30, 0xec, 0xcc, 0xcc, 0x8c,
|
||||
0x10, 0x58, 0x1a, 0x99, 0x71, 0xed, 0x8d, 0x8d,
|
||||
0x2d, 0x41, 0x89, 0x9e, 0x20, 0x70, 0x2c, 0xec,
|
||||
0x2c, 0x70, 0x20, 0x86, 0x77, 0xe1, 0x31, 0x11,
|
||||
0xd1, 0xf1, 0x81, 0x09, 0xa3, 0x56, 0x58, 0x00,
|
||||
0x40, 0xc0, 0x60, 0x38, 0x46, 0x43, 0x57, 0x39,
|
||||
0xd9, 0x59, 0x99, 0xc9, 0x77, 0x2f, 0x2e, 0xc6,
|
||||
0xd6, 0x28, 0xd6, 0x36, 0x26, 0x2e, 0x8a, 0xa3,
|
||||
0x43, 0x63, 0x4b, 0x4a, 0x62, 0x42, 0xa2, 0x8b,
|
||||
0x2f, 0x27, 0x37, 0xd7, 0x29, 0xd7, 0xc7, 0x2f,
|
||||
0x2e, 0x76, 0xc8, 0x98, 0x58, 0xd8, 0x38, 0x56,
|
||||
0x42, 0x47, 0x39, 0x61, 0xc1, 0x41, 0x01, 0x59,
|
||||
0x57, 0xa2, 0x08, 0x80, 0xf0, 0xd0, 0x10, 0x30,
|
||||
0xe0, 0x76, 0x87, 0x21, 0x71, 0x2d, 0xed, 0x2d,
|
||||
0x71, 0x21, 0x9f, 0x88, 0x40, 0x2c, 0x8c, 0x8c,
|
||||
0xec, 0x70, 0x98, 0x1b, 0x59, 0x11, 0x8d, 0xcd,
|
||||
0xcd, 0xed, 0x31, 0x09, 0xb6, 0xc0, 0xec, 0xcc,
|
||||
0x4c, 0xcc, 0xec, 0xc0, 0xc6, 0x49, 0x91, 0x8d,
|
||||
0x4d, 0xbd, 0x0d, 0xad, 0xe1,
|
||||
};
|
||||
static u32 sizeof_american_ringing = sizeof(sample_american_ringing);
|
||||
|
||||
static u8 sample_american_busy[] = {
|
||||
0x2a, 0x00, 0x6c, 0x4c, 0x4c, 0x6c, 0xb0, 0x66,
|
||||
0x99, 0x11, 0x6d, 0x8d, 0x2d, 0x41, 0xd7, 0x96,
|
||||
0x60, 0xf0, 0x70, 0x40, 0x58, 0xf6, 0x53, 0x57,
|
||||
0x09, 0x89, 0xd7, 0x5f, 0xe3, 0x2a, 0xe3, 0x5f,
|
||||
0xd7, 0x89, 0x09, 0x57, 0x53, 0xf6, 0x58, 0x40,
|
||||
0x70, 0xf0, 0x60, 0x96, 0xd7, 0x41, 0x2d, 0x8d,
|
||||
0x6d, 0x11, 0x99, 0x66, 0xb0, 0x6c, 0x4c, 0x4c,
|
||||
0x6c, 0x00, 0x2a, 0x01, 0x6d, 0x4d, 0x4d, 0x6d,
|
||||
0xb1, 0x67, 0x98, 0x10, 0x6c, 0x8c, 0x2c, 0x40,
|
||||
0xd6, 0x97, 0x61, 0xf1, 0x71, 0x41, 0x59, 0xf7,
|
||||
0x52, 0x56, 0x08, 0x88, 0xd6, 0x5e, 0xe2, 0x2a,
|
||||
0xe2, 0x5e, 0xd6, 0x88, 0x08, 0x56, 0x52, 0xf7,
|
||||
0x59, 0x41, 0x71, 0xf1, 0x61, 0x97, 0xd6, 0x40,
|
||||
0x2c, 0x8c, 0x6c, 0x10, 0x98, 0x67, 0xb1, 0x6d,
|
||||
0x4d, 0x4d, 0x6d, 0x01,
|
||||
};
|
||||
static u32 sizeof_american_busy = sizeof(sample_american_busy);
|
||||
|
||||
static u8 sample_special1[] = {
|
||||
0x2a, 0x2c, 0xbc, 0x6c, 0xd6, 0x71, 0xbd, 0x0d,
|
||||
0xd9, 0x80, 0xcc, 0x4c, 0x40, 0x39, 0x0d, 0xbd,
|
||||
0x11, 0x86, 0xec, 0xbc, 0xec, 0x0e, 0x51, 0xbd,
|
||||
0x8d, 0x89, 0x30, 0x4c, 0xcc, 0xe0, 0xe1, 0xcd,
|
||||
0x4d, 0x31, 0x88, 0x8c, 0xbc, 0x50, 0x0f, 0xed,
|
||||
0xbd, 0xed, 0x87, 0x10, 0xbc, 0x0c, 0x38, 0x41,
|
||||
0x4d, 0xcd, 0x81, 0xd8, 0x0c, 0xbc, 0x70, 0xd7,
|
||||
0x6d, 0xbd, 0x2d,
|
||||
};
|
||||
static u32 sizeof_special1 = sizeof(sample_special1);
|
||||
|
||||
static u8 sample_special2[] = {
|
||||
0x2a, 0xcc, 0x8c, 0xd7, 0x4d, 0x2d, 0x18, 0xbc,
|
||||
0x10, 0xc1, 0xbd, 0xc1, 0x10, 0xbc, 0x18, 0x2d,
|
||||
0x4d, 0xd7, 0x8c, 0xcc, 0x2a, 0xcd, 0x8d, 0xd6,
|
||||
0x4c, 0x2c, 0x19, 0xbd, 0x11, 0xc0, 0xbc, 0xc0,
|
||||
0x11, 0xbd, 0x19, 0x2c, 0x4c, 0xd6, 0x8d, 0xcd,
|
||||
0x2a, 0xcc, 0x8c, 0xd7, 0x4d, 0x2d, 0x18, 0xbc,
|
||||
0x10, 0xc1, 0xbd, 0xc1, 0x10, 0xbc, 0x18, 0x2d,
|
||||
0x4d, 0xd7, 0x8c, 0xcc, 0x2a, 0xcd, 0x8d, 0xd6,
|
||||
0x4c, 0x2c, 0x19, 0xbd, 0x11, 0xc0, 0xbc, 0xc0,
|
||||
0x11, 0xbd, 0x19, 0x2c, 0x4c, 0xd6, 0x8d, 0xcd,
|
||||
};
|
||||
static u32 sizeof_special2 = sizeof(sample_special2);
|
||||
|
||||
static u8 sample_special3[] = {
|
||||
0x2a, 0xbc, 0x18, 0xcd, 0x11, 0x2c, 0x8c, 0xc1,
|
||||
0x4d, 0xd6, 0xbc, 0xd6, 0x4d, 0xc1, 0x8c, 0x2c,
|
||||
0x11, 0xcd, 0x18, 0xbc, 0x2a, 0xbd, 0x19, 0xcc,
|
||||
0x10, 0x2d, 0x8d, 0xc0, 0x4c, 0xd7, 0xbd, 0xd7,
|
||||
0x4c, 0xc0, 0x8d, 0x2d, 0x10, 0xcc, 0x19, 0xbd,
|
||||
0x2a, 0xbc, 0x18, 0xcd, 0x11, 0x2c, 0x8c, 0xc1,
|
||||
0x4d, 0xd6, 0xbc, 0xd6, 0x4d, 0xc1, 0x8c, 0x2c,
|
||||
0x11, 0xcd, 0x18, 0xbc, 0x2a, 0xbd, 0x19, 0xcc,
|
||||
0x10, 0x2d, 0x8d, 0xc0, 0x4c, 0xd7, 0xbd, 0xd7,
|
||||
0x4c, 0xc0, 0x8d, 0x2d, 0x10, 0xcc, 0x19, 0xbd,
|
||||
};
|
||||
static u32 sizeof_special3 = sizeof(sample_special3);
|
||||
|
||||
static u8 sample_silence[] = {
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a, 0x2a,
|
||||
};
|
||||
static u32 sizeof_silence = sizeof(sample_silence);
|
||||
|
||||
struct tones_samples {
|
||||
u32 *len;
|
||||
u8 *data;
|
||||
};
|
||||
static struct
|
||||
tones_samples samples[] = {
|
||||
{&sizeof_german_all, sample_german_all},
|
||||
{&sizeof_german_old, sample_german_old},
|
||||
{&sizeof_american_dialtone, sample_american_dialtone},
|
||||
{&sizeof_american_ringing, sample_american_ringing},
|
||||
{&sizeof_american_busy, sample_american_busy},
|
||||
{&sizeof_special1, sample_special1},
|
||||
{&sizeof_special2, sample_special2},
|
||||
{&sizeof_special3, sample_special3},
|
||||
{NULL, NULL},
|
||||
};
|
||||
|
||||
/***********************************
|
||||
* generate ulaw from alaw samples *
|
||||
***********************************/
|
||||
|
||||
void
|
||||
dsp_audio_generate_ulaw_samples(void)
|
||||
{
|
||||
int i, j;
|
||||
|
||||
i = 0;
|
||||
while (samples[i].len) {
|
||||
j = 0;
|
||||
while (j < (*samples[i].len)) {
|
||||
samples[i].data[j] =
|
||||
dsp_audio_alaw_to_ulaw[samples[i].data[j]];
|
||||
j++;
|
||||
}
|
||||
i++;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/****************************
|
||||
* tone sequence definition *
|
||||
****************************/
|
||||
|
||||
struct pattern {
|
||||
int tone;
|
||||
u8 *data[10];
|
||||
u32 *siz[10];
|
||||
u32 seq[10];
|
||||
} pattern[] = {
|
||||
{TONE_GERMAN_DIALTONE,
|
||||
{DATA_GA, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GA, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{1900, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_OLDDIALTONE,
|
||||
{DATA_GO, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GO, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{1998, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_AMERICAN_DIALTONE,
|
||||
{DATA_DT, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_DT, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{8000, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_DIALPBX,
|
||||
{DATA_GA, DATA_S, DATA_GA, DATA_S, DATA_GA, DATA_S, 0, 0, 0, 0},
|
||||
{SIZE_GA, SIZE_S, SIZE_GA, SIZE_S, SIZE_GA, SIZE_S, 0, 0, 0, 0},
|
||||
{2000, 2000, 2000, 2000, 2000, 12000, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_OLDDIALPBX,
|
||||
{DATA_GO, DATA_S, DATA_GO, DATA_S, DATA_GO, DATA_S, 0, 0, 0, 0},
|
||||
{SIZE_GO, SIZE_S, SIZE_GO, SIZE_S, SIZE_GO, SIZE_S, 0, 0, 0, 0},
|
||||
{2000, 2000, 2000, 2000, 2000, 12000, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_AMERICAN_DIALPBX,
|
||||
{DATA_DT, DATA_S, DATA_DT, DATA_S, DATA_DT, DATA_S, 0, 0, 0, 0},
|
||||
{SIZE_DT, SIZE_S, SIZE_DT, SIZE_S, SIZE_DT, SIZE_S, 0, 0, 0, 0},
|
||||
{2000, 2000, 2000, 2000, 2000, 12000, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_RINGING,
|
||||
{DATA_GA, DATA_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GA, SIZE_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{8000, 32000, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_OLDRINGING,
|
||||
{DATA_GO, DATA_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GO, SIZE_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{8000, 40000, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_AMERICAN_RINGING,
|
||||
{DATA_RI, DATA_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_RI, SIZE_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{8000, 32000, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_RINGPBX,
|
||||
{DATA_GA, DATA_S, DATA_GA, DATA_S, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GA, SIZE_S, SIZE_GA, SIZE_S, 0, 0, 0, 0, 0, 0},
|
||||
{4000, 4000, 4000, 28000, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_OLDRINGPBX,
|
||||
{DATA_GO, DATA_S, DATA_GO, DATA_S, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GO, SIZE_S, SIZE_GO, SIZE_S, 0, 0, 0, 0, 0, 0},
|
||||
{4000, 4000, 4000, 28000, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_AMERICAN_RINGPBX,
|
||||
{DATA_RI, DATA_S, DATA_RI, DATA_S, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_RI, SIZE_S, SIZE_RI, SIZE_S, 0, 0, 0, 0, 0, 0},
|
||||
{4000, 4000, 4000, 28000, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_BUSY,
|
||||
{DATA_GA, DATA_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GA, SIZE_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{4000, 4000, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_OLDBUSY,
|
||||
{DATA_GO, DATA_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GO, SIZE_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{1000, 5000, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_AMERICAN_BUSY,
|
||||
{DATA_BU, DATA_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_BU, SIZE_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{4000, 4000, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_HANGUP,
|
||||
{DATA_GA, DATA_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GA, SIZE_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{4000, 4000, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_OLDHANGUP,
|
||||
{DATA_GO, DATA_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GO, SIZE_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{1000, 5000, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_AMERICAN_HANGUP,
|
||||
{DATA_DT, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_DT, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{8000, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_SPECIAL_INFO,
|
||||
{DATA_S1, DATA_S2, DATA_S3, DATA_S, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_S1, SIZE_S2, SIZE_S3, SIZE_S, 0, 0, 0, 0, 0, 0},
|
||||
{2666, 2666, 2666, 8002, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_GASSENBESETZT,
|
||||
{DATA_GA, DATA_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GA, SIZE_S, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{2000, 2000, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{TONE_GERMAN_AUFSCHALTTON,
|
||||
{DATA_GO, DATA_S, DATA_GO, DATA_S, 0, 0, 0, 0, 0, 0},
|
||||
{SIZE_GO, SIZE_S, SIZE_GO, SIZE_S, 0, 0, 0, 0, 0, 0},
|
||||
{1000, 5000, 1000, 17000, 0, 0, 0, 0, 0, 0} },
|
||||
|
||||
{0,
|
||||
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
|
||||
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0} },
|
||||
};
|
||||
|
||||
/******************
|
||||
* copy tone data *
|
||||
******************/
|
||||
|
||||
/* an sk_buff is generated from the number of samples needed.
|
||||
* the count will be changed and may begin from 0 each pattern period.
|
||||
* the clue is to precalculate the pointers and legths to use only one
|
||||
* memcpy per function call, or two memcpy if the tone sequence changes.
|
||||
*
|
||||
* pattern - the type of the pattern
|
||||
* count - the sample from the beginning of the pattern (phase)
|
||||
* len - the number of bytes
|
||||
*
|
||||
* return - the sk_buff with the sample
|
||||
*
|
||||
* if tones has finished (e.g. knocking tone), dsp->tones is turned off
|
||||
*/
|
||||
void dsp_tone_copy(struct dsp *dsp, u8 *data, int len)
|
||||
{
|
||||
int index, count, start, num;
|
||||
struct pattern *pat;
|
||||
struct dsp_tone *tone = &dsp->tone;
|
||||
|
||||
/* if we have no tone, we copy silence */
|
||||
if (!tone->tone) {
|
||||
memset(data, dsp_silence, len);
|
||||
return;
|
||||
}
|
||||
|
||||
/* process pattern */
|
||||
pat = (struct pattern *)tone->pattern;
|
||||
/* points to the current pattern */
|
||||
index = tone->index; /* gives current sequence index */
|
||||
count = tone->count; /* gives current sample */
|
||||
|
||||
/* copy sample */
|
||||
while (len) {
|
||||
/* find sample to start with */
|
||||
while (42) {
|
||||
/* warp arround */
|
||||
if (!pat->seq[index]) {
|
||||
count = 0;
|
||||
index = 0;
|
||||
}
|
||||
/* check if we are currently playing this tone */
|
||||
if (count < pat->seq[index])
|
||||
break;
|
||||
if (dsp_debug & DEBUG_DSP_TONE)
|
||||
printk(KERN_DEBUG "%s: reaching next sequence "
|
||||
"(index=%d)\n", __func__, index);
|
||||
count -= pat->seq[index];
|
||||
index++;
|
||||
}
|
||||
/* calculate start and number of samples */
|
||||
start = count % (*(pat->siz[index]));
|
||||
num = len;
|
||||
if (num+count > pat->seq[index])
|
||||
num = pat->seq[index] - count;
|
||||
if (num+start > (*(pat->siz[index])))
|
||||
num = (*(pat->siz[index])) - start;
|
||||
/* copy memory */
|
||||
memcpy(data, pat->data[index]+start, num);
|
||||
/* reduce length */
|
||||
data += num;
|
||||
count += num;
|
||||
len -= num;
|
||||
}
|
||||
tone->index = index;
|
||||
tone->count = count;
|
||||
|
||||
/* return sk_buff */
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
/*******************************
|
||||
* send HW message to hfc card *
|
||||
*******************************/
|
||||
|
||||
static void
|
||||
dsp_tone_hw_message(struct dsp *dsp, u8 *sample, int len)
|
||||
{
|
||||
struct sk_buff *nskb;
|
||||
|
||||
/* unlocking is not required, because we don't expect a response */
|
||||
nskb = _alloc_mISDN_skb(PH_CONTROL_REQ,
|
||||
(len)?HFC_SPL_LOOP_ON:HFC_SPL_LOOP_OFF, len, sample,
|
||||
GFP_ATOMIC);
|
||||
if (nskb) {
|
||||
if (dsp->ch.peer) {
|
||||
if (dsp->ch.recv(dsp->ch.peer, nskb))
|
||||
dev_kfree_skb(nskb);
|
||||
} else
|
||||
dev_kfree_skb(nskb);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*****************
|
||||
* timer expires *
|
||||
*****************/
|
||||
void
|
||||
dsp_tone_timeout(void *arg)
|
||||
{
|
||||
struct dsp *dsp = arg;
|
||||
struct dsp_tone *tone = &dsp->tone;
|
||||
struct pattern *pat = (struct pattern *)tone->pattern;
|
||||
int index = tone->index;
|
||||
|
||||
if (!tone->tone)
|
||||
return;
|
||||
|
||||
index++;
|
||||
if (!pat->seq[index])
|
||||
index = 0;
|
||||
tone->index = index;
|
||||
|
||||
/* set next tone */
|
||||
if (pat->data[index] == DATA_S)
|
||||
dsp_tone_hw_message(dsp, 0, 0);
|
||||
else
|
||||
dsp_tone_hw_message(dsp, pat->data[index], *(pat->siz[index]));
|
||||
/* set timer */
|
||||
init_timer(&tone->tl);
|
||||
tone->tl.expires = jiffies + (pat->seq[index] * HZ) / 8000;
|
||||
add_timer(&tone->tl);
|
||||
}
|
||||
|
||||
|
||||
/********************
|
||||
* set/release tone *
|
||||
********************/
|
||||
|
||||
/*
|
||||
* tones are relaized by streaming or by special loop commands if supported
|
||||
* by hardware. when hardware is used, the patterns will be controlled by
|
||||
* timers.
|
||||
*/
|
||||
int
|
||||
dsp_tone(struct dsp *dsp, int tone)
|
||||
{
|
||||
struct pattern *pat;
|
||||
int i;
|
||||
struct dsp_tone *tonet = &dsp->tone;
|
||||
|
||||
tonet->software = 0;
|
||||
tonet->hardware = 0;
|
||||
|
||||
/* we turn off the tone */
|
||||
if (!tone) {
|
||||
if (dsp->features.hfc_loops)
|
||||
if (timer_pending(&tonet->tl))
|
||||
del_timer(&tonet->tl);
|
||||
if (dsp->features.hfc_loops)
|
||||
dsp_tone_hw_message(dsp, NULL, 0);
|
||||
tonet->tone = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
pat = NULL;
|
||||
i = 0;
|
||||
while (pattern[i].tone) {
|
||||
if (pattern[i].tone == tone) {
|
||||
pat = &pattern[i];
|
||||
break;
|
||||
}
|
||||
i++;
|
||||
}
|
||||
if (!pat) {
|
||||
printk(KERN_WARNING "dsp: given tone 0x%x is invalid\n", tone);
|
||||
return -EINVAL;
|
||||
}
|
||||
if (dsp_debug & DEBUG_DSP_TONE)
|
||||
printk(KERN_DEBUG "%s: now starting tone %d (index=%d)\n",
|
||||
__func__, tone, 0);
|
||||
tonet->tone = tone;
|
||||
tonet->pattern = pat;
|
||||
tonet->index = 0;
|
||||
tonet->count = 0;
|
||||
|
||||
if (dsp->features.hfc_loops) {
|
||||
tonet->hardware = 1;
|
||||
/* set first tone */
|
||||
dsp_tone_hw_message(dsp, pat->data[0], *(pat->siz[0]));
|
||||
/* set timer */
|
||||
if (timer_pending(&tonet->tl))
|
||||
del_timer(&tonet->tl);
|
||||
init_timer(&tonet->tl);
|
||||
tonet->tl.expires = jiffies + (pat->seq[0] * HZ) / 8000;
|
||||
add_timer(&tonet->tl);
|
||||
} else {
|
||||
tonet->software = 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
#ifndef __mISDNdsp_H__
|
||||
#define __mISDNdsp_H__
|
||||
|
||||
struct mISDN_dsp_element_arg {
|
||||
char *name;
|
||||
char *def;
|
||||
char *desc;
|
||||
};
|
||||
|
||||
struct mISDN_dsp_element {
|
||||
char *name;
|
||||
void *(*new)(const char *arg);
|
||||
void (*free)(void *p);
|
||||
void (*process_tx)(void *p, unsigned char *data, int len);
|
||||
void (*process_rx)(void *p, unsigned char *data, int len);
|
||||
int num_args;
|
||||
struct mISDN_dsp_element_arg
|
||||
*args;
|
||||
};
|
||||
|
||||
extern int mISDN_dsp_element_register(struct mISDN_dsp_element *elem);
|
||||
extern void mISDN_dsp_element_unregister(struct mISDN_dsp_element *elem);
|
||||
|
||||
struct dsp_features {
|
||||
int hfc_id; /* unique id to identify the chip (or -1) */
|
||||
int hfc_dtmf; /* set if HFCmulti card supports dtmf */
|
||||
int hfc_loops; /* set if card supports tone loops */
|
||||
int hfc_echocanhw; /* set if card supports echocancelation*/
|
||||
int pcm_id; /* unique id to identify the pcm bus (or -1) */
|
||||
int pcm_slots; /* number of slots on the pcm bus */
|
||||
int pcm_banks; /* number of IO banks of pcm bus */
|
||||
int unclocked; /* data is not clocked (has jitter/loss) */
|
||||
int unordered; /* data is unordered (packets have index) */
|
||||
};
|
||||
|
||||
#endif
|
||||
|
||||
Loading…
Reference in New Issue