diff options
Diffstat (limited to 'drivers/isdn/mISDN/dsp.h')
| -rw-r--r-- | drivers/isdn/mISDN/dsp.h | 48 |
1 files changed, 30 insertions, 18 deletions
diff --git a/drivers/isdn/mISDN/dsp.h b/drivers/isdn/mISDN/dsp.h index 98a33c58f09..fc1733a0884 100644 --- a/drivers/isdn/mISDN/dsp.h +++ b/drivers/isdn/mISDN/dsp.h @@ -21,11 +21,11 @@ /* options may be: * * bit 0 = use ulaw instead of alaw - * bit 1 = enable hfc hardware accelleration for all channels + * bit 1 = enable hfc hardware acceleration for all channels * */ -#define DSP_OPT_ULAW (1<<0) -#define DSP_OPT_NOHARDWARE (1<<1) +#define DSP_OPT_ULAW (1 << 0) +#define DSP_OPT_NOHARDWARE (1 << 1) #include <linux/timer.h> #include <linux/workqueue.h> @@ -76,7 +76,9 @@ extern u8 dsp_silence; #define MAX_SECONDS_JITTER_CHECK 5 extern struct timer_list dsp_spl_tl; -extern u32 dsp_spl_jiffies; + +/* the datatype need to match jiffies datatype */ +extern unsigned long dsp_spl_jiffies; /* the structure of conferences: * @@ -97,12 +99,12 @@ struct dsp_conf_member { struct dsp_conf { struct list_head list; u32 id; - /* all cmx stacks with the same ID are - connected */ + /* 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 */ + /* note: if both unset, has only one member */ }; @@ -112,18 +114,20 @@ struct dsp_conf { #define DSP_DTMF_NPOINTS 102 -#define ECHOCAN_BUFLEN (4*128) +#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 */ + /* buffers one full dtmf frame */ u8 lastwhat, lastdigit; int count; - u8 digits[16]; /* just the dtmf result */ + u8 digits[16]; /* dtmf result */ }; @@ -150,6 +154,15 @@ struct dsp_tone { 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 * *****************/ @@ -160,7 +173,7 @@ struct dsp { struct mISDNchannel *up; unsigned char name[64]; int b_active; - int echo; /* echo is enabled */ + struct dsp_echo echo; int rx_disabled; /* what the user wants */ int rx_is_off; /* what the card is */ int tx_mix; @@ -178,7 +191,7 @@ struct dsp { u32 conf_id; struct dsp_conf *conf; struct dsp_conf_member - *member; + *member; /* buffer stuff */ int rx_W; /* current write pos for data without timestamp */ @@ -192,7 +205,7 @@ struct dsp { 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 */ + 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 */ @@ -220,7 +233,7 @@ struct dsp { int bf_sync; struct dsp_pipeline - pipeline; + pipeline; }; /* functions */ @@ -242,7 +255,7 @@ 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); + int fmt); extern int dsp_tone(struct dsp *dsp, int tone); extern void dsp_tone_copy(struct dsp *dsp, u8 *data, int len); @@ -259,7 +272,6 @@ 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); + int len); extern void dsp_pipeline_process_rx(struct dsp_pipeline *pipeline, u8 *data, - int len); - + int len, unsigned int txlen); |