diff options
Diffstat (limited to 'sound/usb/card.h')
| -rw-r--r-- | sound/usb/card.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sound/usb/card.h b/sound/usb/card.h index 5ecacaa90b5..ca98a9b915c 100644 --- a/sound/usb/card.h +++ b/sound/usb/card.h @@ -2,11 +2,11 @@ #define __USBAUDIO_CARD_H #define MAX_NR_RATES 1024 -#define MAX_PACKS 20 +#define MAX_PACKS 6 /* per URB */ #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */ -#define MAX_URBS 8 +#define MAX_URBS 12 #define SYNC_URBS 4 /* always four urbs for sync */ -#define MAX_QUEUE 24 /* try not to exceed this queue length, in ms */ +#define MAX_QUEUE 18 /* try not to exceed this queue length, in ms */ struct audioformat { struct list_head list; @@ -87,6 +87,7 @@ struct snd_usb_endpoint { unsigned int phase; /* phase accumulator */ unsigned int maxpacksize; /* max packet size in bytes */ unsigned int maxframesize; /* max packet size in frames */ + unsigned int max_urb_frames; /* max URB size in frames */ unsigned int curpacksize; /* current packet size in bytes (for capture) */ unsigned int curframesize; /* current packet size in frames (for capture) */ unsigned int syncmaxsize; /* sync endpoint packet size */ @@ -116,6 +117,8 @@ struct snd_usb_substream { unsigned int channels_max; /* max channels in the all audiofmts */ unsigned int cur_rate; /* current rate (for hw_params callback) */ unsigned int period_bytes; /* current period bytes (for hw_params callback) */ + unsigned int period_frames; /* current frames per period */ + unsigned int buffer_periods; /* current periods per buffer */ unsigned int altset_idx; /* USB data format: index of alternate setting */ unsigned int txfr_quirk:1; /* allow sub-frame alignment */ unsigned int fmt_type; /* USB audio format type (1-3) */ @@ -125,6 +128,7 @@ struct snd_usb_substream { unsigned int hwptr_done; /* processed byte position in the buffer */ unsigned int transfer_done; /* processed frames since last period update */ + unsigned int frame_limit; /* limits number of packets in URB */ /* data and sync endpoints for this stream */ unsigned int ep_num; /* the endpoint number */ |