diff options
Diffstat (limited to 'drivers/staging/line6/pcm.h')
| -rw-r--r-- | drivers/staging/line6/pcm.h | 44 |
1 files changed, 28 insertions, 16 deletions
diff --git a/drivers/staging/line6/pcm.h b/drivers/staging/line6/pcm.h index 90f8bb9816d..53db217cd42 100644 --- a/drivers/staging/line6/pcm.h +++ b/drivers/staging/line6/pcm.h @@ -23,16 +23,24 @@ #include "usbdefs.h" -#define LINE6_ISO_BUFFERS 8 /* number of URBs */ -#define LINE6_ISO_PACKETS 2 /* number of USB frames per URB */ -#define LINE6_ISO_INTERVAL 1 /* in a "full speed" device (such as the PODxt Pro) this means 1ms */ -#define LINE6_ISO_PACKET_SIZE_MAX 252 /* this should be queried dynamically from the USB interface! */ +/* number of URBs */ +#define LINE6_ISO_BUFFERS 8 + +/* number of USB frames per URB */ +#define LINE6_ISO_PACKETS 2 + +/* in a "full speed" device (such as the PODxt Pro) this means 1ms */ +#define LINE6_ISO_INTERVAL 1 + +/* this should be queried dynamically from the USB interface! */ +#define LINE6_ISO_PACKET_SIZE_MAX 252 /* Extract the messaging device from the substream instance */ -#define s2m(s) (((struct snd_line6_pcm *)snd_pcm_substream_chip(s))->line6->ifcdev) +#define s2m(s) (((struct snd_line6_pcm *) \ + snd_pcm_substream_chip(s))->line6->ifcdev) enum { @@ -48,8 +56,7 @@ struct line6_pcm_properties { int bytes_per_frame; }; -struct snd_line6_pcm -{ +struct snd_line6_pcm { /** Pointer back to the Line6 driver data structure. */ @@ -82,8 +89,8 @@ struct snd_line6_pcm /** Temporary buffer for capture. - Since the packet size is not known in advance, this buffer is large enough - to store maximum size packets. + Since the packet size is not known in advance, this buffer is + large enough to store maximum size packets. */ unsigned char *buffer_in; @@ -94,7 +101,8 @@ struct snd_line6_pcm /** Count processed bytes for playback. - This is modulo period size (to determine when a period is finished). + This is modulo period size (to determine when a period is + finished). */ unsigned bytes_out; @@ -110,14 +118,16 @@ struct snd_line6_pcm /** Processed frame position in the playback buffer. - The contents of the output ring buffer have been consumed by the USB - subsystem (i.e., sent to the USB device) up to this position. + The contents of the output ring buffer have been consumed by + the USB subsystem (i.e., sent to the USB device) up to this + position. */ snd_pcm_uframes_t pos_out_done; /** Count processed bytes for capture. - This is modulo period size (to determine when a period is finished). + This is modulo period size (to determine when a period is + finished). */ unsigned bytes_in; @@ -133,8 +143,9 @@ struct snd_line6_pcm /** Processed frame position in the capture buffer. - The contents of the output ring buffer have been consumed by the USB - subsystem (i.e., sent to the USB device) up to this position. + The contents of the output ring buffer have been consumed by + the USB subsystem (i.e., sent to the USB device) up to this + position. */ snd_pcm_uframes_t pos_in_done; @@ -202,7 +213,8 @@ struct snd_line6_pcm }; -extern int line6_init_pcm(struct usb_line6 *line6, struct line6_pcm_properties *properties); +extern int line6_init_pcm(struct usb_line6 *line6, + struct line6_pcm_properties *properties); extern int snd_line6_trigger(struct snd_pcm_substream *substream, int cmd); extern int snd_line6_prepare(struct snd_pcm_substream *substream); |