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path: root/drivers/isdn/mISDN/dsp.h
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Diffstat (limited to 'drivers/isdn/mISDN/dsp.h')
-rw-r--r--drivers/isdn/mISDN/dsp.h19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/isdn/mISDN/dsp.h b/drivers/isdn/mISDN/dsp.h
index 98a33c58f091..18af86879c05 100644
--- a/drivers/isdn/mISDN/dsp.h
+++ b/drivers/isdn/mISDN/dsp.h
@@ -112,9 +112,11 @@ 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 */
@@ -123,7 +125,7 @@ struct dsp_dtmf {
/* buffers one full dtmf frame */
u8 lastwhat, lastdigit;
int count;
- u8 digits[16]; /* just the dtmf result */
+ u8 digits[16]; /* dtmf result */
};
@@ -150,6 +152,15 @@ 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 +171,7 @@ 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;
@@ -261,5 +272,5 @@ 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);
+ int len, unsigned int txlen);