| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Karsten Keil | 947 | 95.08% | 2 | 16.67% |
| Andreas Eversberg | 41 | 4.12% | 7 | 58.33% |
| Joe Perches | 4 | 0.40% | 1 | 8.33% |
| Kees Cook | 3 | 0.30% | 1 | 8.33% |
| Lucas De Marchi | 1 | 0.10% | 1 | 8.33% |
| Total | 996 | 12 |
/* * Audio support data for ISDN4Linux. * * Copyright 2002/2003 by 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. * */ #define DEBUG_DSP_CTRL 0x0001 #define DEBUG_DSP_CORE 0x0002 #define DEBUG_DSP_DTMF 0x0004 #define DEBUG_DSP_CMX 0x0010 #define DEBUG_DSP_TONE 0x0020 #define DEBUG_DSP_BLOWFISH 0x0040 #define DEBUG_DSP_DELAY 0x0100 #define DEBUG_DSP_CLOCK 0x0200 #define DEBUG_DSP_DTMFCOEFF 0x8000 /* heavy output */ /* options may be: * * bit 0 = use ulaw instead of alaw * bit 1 = enable hfc hardware acceleration for all channels * */ #define DSP_OPT_ULAW (1 << 0) #define DSP_OPT_NOHARDWARE (1 << 1) #include <linux/timer.h> #include <linux/workqueue.h> #include "dsp_ecdis.h" extern int dsp_options; extern int dsp_debug; extern int dsp_poll; extern int dsp_tics; extern spinlock_t dsp_lock; extern struct work_struct dsp_workq; extern u32 dsp_poll_diff; /* calculated fix-comma corrected poll value */ /*************** * audio stuff * ***************/ extern s32 dsp_audio_alaw_to_s32[256]; extern s32 dsp_audio_ulaw_to_s32[256]; extern s32 *dsp_audio_law_to_s32; extern u8 dsp_audio_s16_to_law[65536]; extern u8 dsp_audio_alaw_to_ulaw[256]; extern u8 dsp_audio_mix_law[65536]; extern u8 dsp_audio_seven2law[128]; extern u8 dsp_audio_law2seven[256]; extern void dsp_audio_generate_law_tables(void); extern void dsp_audio_generate_s2law_table(void); extern void dsp_audio_generate_seven(void); extern void dsp_audio_generate_mix_table(void); extern void dsp_audio_generate_ulaw_samples(void); extern void dsp_audio_generate_volume_changes(void); extern u8 dsp_silence; /************* * cmx stuff * *************/ #define MAX_POLL 256 /* maximum number of send-chunks */ #define CMX_BUFF_SIZE 0x8000 /* must be 2**n (0x1000 about 1/2 second) */ #define CMX_BUFF_HALF 0x4000 /* CMX_BUFF_SIZE / 2 */ #define CMX_BUFF_MASK 0x7fff /* CMX_BUFF_SIZE - 1 */ /* how many seconds will we check the lowest delay until the jitter buffer is reduced by that delay */ #define MAX_SECONDS_JITTER_CHECK 5 extern struct timer_list dsp_spl_tl; /* the datatype need to match jiffies datatype */ extern unsigned long dsp_spl_jiffies; /* the structure of conferences: * * each conference has a unique number, given by user space. * the conferences are linked in a chain. * each conference has members linked in a chain. * each dsplayer points to a member, each member points to a dsplayer. */ /* all members within a conference (this is linked 1:1 with the dsp) */ struct dsp; struct dsp_conf_member { struct list_head list; struct dsp *dsp; }; /* the list of all conferences */ struct dsp_conf { struct list_head list; u32 id; /* all cmx stacks with the same ID are connected */ struct list_head mlist; int software; /* conf is processed by software */ int hardware; /* conf is processed by hardware */ /* note: if both unset, has only one member */ }; /************** * DTMF stuff * **************/ #define DSP_DTMF_NPOINTS 102 #define ECHOCAN_BUFF_SIZE 0x400 /* must be 2**n */ #define ECHOCAN_BUFF_MASK 0x3ff /* -1 */ struct dsp_dtmf { int enable; /* dtmf is enabled */ int treshold; /* above this is dtmf (square of) */ int software; /* dtmf uses software decoding */ int hardware; /* dtmf uses hardware decoding */ int size; /* number of bytes in buffer */ signed short buffer[DSP_DTMF_NPOINTS]; /* buffers one full dtmf frame */ u8 lastwhat, lastdigit; int count; u8 digits[16]; /* dtmf result */ }; /****************** * pipeline stuff * ******************/ struct dsp_pipeline { rwlock_t lock; struct list_head list; int inuse; }; /*************** * tones stuff * ***************/ struct dsp_tone { int software; /* tones are generated by software */ int hardware; /* tones are generated by hardware */ int tone; void *pattern; int count; int index; struct timer_list tl; }; /*************** * echo stuff * ***************/ struct dsp_echo { int software; /* echo is generated by software */ int hardware; /* echo is generated by hardware */ }; /***************** * general stuff * *****************/ struct dsp { struct list_head list; struct mISDNchannel ch; struct mISDNchannel *up; unsigned char name[64]; int b_active; struct dsp_echo echo; int rx_disabled; /* what the user wants */ int rx_is_off; /* what the card is */ int tx_mix; struct dsp_tone tone; struct dsp_dtmf dtmf; int tx_volume, rx_volume; /* queue for sending frames */ struct work_struct workq; struct sk_buff_head sendq; int hdlc; /* if mode is hdlc */ int data_pending; /* currently an unconfirmed frame */ /* conference stuff */ u32 conf_id; struct dsp_conf *conf; struct dsp_conf_member *member; /* buffer stuff */ int rx_W; /* current write pos for data without timestamp */ int rx_R; /* current read pos for transmit clock */ int rx_init; /* if set, pointers will be adjusted first */ int tx_W; /* current write pos for transmit data */ int tx_R; /* current read pos for transmit clock */ int rx_delay[MAX_SECONDS_JITTER_CHECK]; int tx_delay[MAX_SECONDS_JITTER_CHECK]; u8 tx_buff[CMX_BUFF_SIZE]; u8 rx_buff[CMX_BUFF_SIZE]; int last_tx; /* if set, we transmitted last poll interval */ int cmx_delay; /* initial delay of buffers, or 0 for dynamic jitter buffer */ int tx_dejitter; /* if set, dejitter tx buffer */ int tx_data; /* enables tx-data of CMX to upper layer */ /* hardware stuff */ struct dsp_features features; int features_rx_off; /* set if rx_off is featured */ int features_fill_empty; /* set if fill_empty is featured */ int pcm_slot_rx; /* current PCM slot (or -1) */ int pcm_bank_rx; int pcm_slot_tx; int pcm_bank_tx; int hfc_conf; /* unique id of current conference (or -1) */ /* encryption stuff */ int bf_enable; u32 bf_p[18]; u32 bf_s[1024]; int bf_crypt_pos; u8 bf_data_in[9]; u8 bf_crypt_out[9]; int bf_decrypt_in_pos; int bf_decrypt_out_pos; u8 bf_crypt_inring[16]; u8 bf_data_out[9]; int bf_sync; struct dsp_pipeline pipeline; }; /* functions */ extern void dsp_change_volume(struct sk_buff *skb, int volume); extern struct list_head dsp_ilist; extern struct list_head conf_ilist; extern void dsp_cmx_debug(struct dsp *dsp); extern void dsp_cmx_hardware(struct dsp_conf *conf, struct dsp *dsp); extern int dsp_cmx_conf(struct dsp *dsp, u32 conf_id); extern void dsp_cmx_receive(struct dsp *dsp, struct sk_buff *skb); extern void dsp_cmx_hdlc(struct dsp *dsp, struct sk_buff *skb); extern void dsp_cmx_send(void *arg); extern void dsp_cmx_transmit(struct dsp *dsp, struct sk_buff *skb); extern int dsp_cmx_del_conf_member(struct dsp *dsp); extern int dsp_cmx_del_conf(struct dsp_conf *conf); extern void dsp_dtmf_goertzel_init(struct dsp *dsp); extern void dsp_dtmf_hardware(struct dsp *dsp); extern u8 *dsp_dtmf_goertzel_decode(struct dsp *dsp, u8 *data, int len, int fmt); extern int dsp_tone(struct dsp *dsp, int tone); extern void dsp_tone_copy(struct dsp *dsp, u8 *data, int len); extern void dsp_tone_timeout(struct timer_list *t); extern void dsp_bf_encrypt(struct dsp *dsp, u8 *data, int len); extern void dsp_bf_decrypt(struct dsp *dsp, u8 *data, int len); extern int dsp_bf_init(struct dsp *dsp, const u8 *key, unsigned int keylen); extern void dsp_bf_cleanup(struct dsp *dsp); extern int dsp_pipeline_module_init(void); extern void dsp_pipeline_module_exit(void); extern int dsp_pipeline_init(struct dsp_pipeline *pipeline); extern void dsp_pipeline_destroy(struct dsp_pipeline *pipeline); extern int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg); extern void dsp_pipeline_process_tx(struct dsp_pipeline *pipeline, u8 *data, int len); extern void dsp_pipeline_process_rx(struct dsp_pipeline *pipeline, u8 *data, int len, unsigned int txlen);
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