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mISDN: Add feature via MISDN_CTRL_FILL_EMPTY to fill fifo if empty

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This prevents underrun of fifo when filled and in case of an underrun it
prevents subsequent underruns due to jitter.
Improve dsp, so buffers are kept filled with a certain delay, so moderate
jitter will not cause underrun all the time -> the audio quality is highly
improved. tones are not interrupted by gaps anymore, except when CPU is
stalling or in high load.

Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <kkeil@suse.de>
This commit is contained in:
Andreas Eversberg
2008-08-02 22:51:52 +02:00
committed by Karsten Keil
parent 69e656cc16
commit 8dd2f36f31
9 changed files with 165 additions and 45 deletions
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include/linux/mISDNif.h
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@ -312,6 +312,7 @@ clear_channelmap(u_int nr, u_char *map)
#define MISDN_CTRL_SETPEER 0x0040
#define MISDN_CTRL_UNSETPEER 0x0080
#define MISDN_CTRL_RX_OFF 0x0100
#define MISDN_CTRL_FILL_EMPTY 0x0200
#define MISDN_CTRL_HW_FEATURES_OP 0x2000
#define MISDN_CTRL_HW_FEATURES 0x2001
#define MISDN_CTRL_HFC_OP 0x4000