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authorKarsten Keil <kkeil@suse.de>2008-07-26 19:56:38 -0400
committerKarsten Keil <kkeil@suse.de>2008-07-26 19:56:38 -0400
commit960366cf8dbb3359afaca30cf7fdbf69a6d6dda7 (patch)
tree261bc6e6584caf44d8d1fa319e6228431ac3b91d /include/linux/mISDNdsp.h
parent1b2b03f8e514e4f68e293846ba511a948b80243c (diff)
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>
Diffstat (limited to 'include/linux/mISDNdsp.h')
-rw-r--r--include/linux/mISDNdsp.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/include/linux/mISDNdsp.h b/include/linux/mISDNdsp.h
new file mode 100644
index 000000000000..6b71d2dce508
--- /dev/null
+++ b/include/linux/mISDNdsp.h
@@ -0,0 +1,37 @@
1#ifndef __mISDNdsp_H__
2#define __mISDNdsp_H__
3
4struct mISDN_dsp_element_arg {
5 char *name;
6 char *def;
7 char *desc;
8};
9
10struct mISDN_dsp_element {
11 char *name;
12 void *(*new)(const char *arg);
13 void (*free)(void *p);
14 void (*process_tx)(void *p, unsigned char *data, int len);
15 void (*process_rx)(void *p, unsigned char *data, int len);
16 int num_args;
17 struct mISDN_dsp_element_arg
18 *args;
19};
20
21extern int mISDN_dsp_element_register(struct mISDN_dsp_element *elem);
22extern void mISDN_dsp_element_unregister(struct mISDN_dsp_element *elem);
23
24struct dsp_features {
25 int hfc_id; /* unique id to identify the chip (or -1) */
26 int hfc_dtmf; /* set if HFCmulti card supports dtmf */
27 int hfc_loops; /* set if card supports tone loops */
28 int hfc_echocanhw; /* set if card supports echocancelation*/
29 int pcm_id; /* unique id to identify the pcm bus (or -1) */
30 int pcm_slots; /* number of slots on the pcm bus */
31 int pcm_banks; /* number of IO banks of pcm bus */
32 int unclocked; /* data is not clocked (has jitter/loss) */
33 int unordered; /* data is unordered (packets have index) */
34};
35
36#endif
37