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Diffstat (limited to 'sound/usb/card.h')
-rw-r--r--sound/usb/card.h10
1 files changed, 7 insertions, 3 deletions
diff --git a/sound/usb/card.h b/sound/usb/card.h
index 5ecacaa90b53..ca98a9b915c9 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 */