#include "../usbaudio.h"
#include "usbus428ctldefs.h"
-#define NRURBS 2 /* */
-#define NRPACKS 1 /* FIXME: Currently only 1 works.
- usb-frames/ms per urb: 1 and 2 are supported.
- setting to 2 will PERHAPS make it easier for slow machines.
- Jitter will be higher though.
- On my PIII 500Mhz Laptop setting to 1 is the only way to go
- for PLAYING synths. i.e. Jack & Aeolus sound quit nicely
- at 4 periods 64 frames.
- */
+#define NRURBS 2
+
#define URBS_AsyncSeq 10
#define URB_DataLen_AsyncSeq 32
} snd_usX2Y_urbSeq_t;
typedef struct snd_usX2Y_substream snd_usX2Y_substream_t;
+#include "usx2yhwdeppcm.h"
typedef struct {
snd_usb_audio_t chip;
snd_usX2Y_AsyncSeq_t AS04;
unsigned int rate,
format;
- int refframes;
int chip_status;
- struct semaphore open_mutex;
+ struct semaphore prepare_mutex;
us428ctls_sharedmem_t *us428ctls_sharedmem;
+ int wait_iso_frame;
wait_queue_head_t us428ctls_wait_queue_head;
- snd_usX2Y_substream_t *substream[4];
+ snd_usX2Y_hwdep_pcm_shm_t *hwdep_pcm_shm;
+ snd_usX2Y_substream_t *subs[4];
+ snd_usX2Y_substream_t * volatile prepare_subs;
+ wait_queue_head_t prepare_wait_queue;
} usX2Ydev_t;
+struct snd_usX2Y_substream {
+ usX2Ydev_t *usX2Y;
+ snd_pcm_substream_t *pcm_substream;
+
+ int endpoint;
+ unsigned int maxpacksize; /* max packet size in bytes */
+
+ atomic_t state;
+#define state_STOPPED 0
+#define state_STARTING1 1
+#define state_STARTING2 2
+#define state_STARTING3 3
+#define state_PREPARED 4
+#define state_PRERUNNING 6
+#define state_RUNNING 8
+
+ int hwptr; /* free frame position in the buffer (only for playback) */
+ int hwptr_done; /* processed frame position in the buffer */
+ int transfer_done; /* processed frames since last period update */
+
+ struct urb *urb[NRURBS]; /* data urb table */
+ struct urb *completed_urb;
+ char *tmpbuf; /* temporary buffer for playback */
+};
+
+
#define usX2Y(c) ((usX2Ydev_t*)(c)->private_data)
int usX2Y_audio_create(snd_card_t* card);