diff options
Diffstat (limited to 'drivers/usb/cpia.h')
| -rw-r--r-- | drivers/usb/cpia.h | 90 |
1 files changed, 67 insertions, 23 deletions
diff --git a/drivers/usb/cpia.h b/drivers/usb/cpia.h index 4596ec159..f1d9ed7cd 100644 --- a/drivers/usb/cpia.h +++ b/drivers/usb/cpia.h @@ -78,9 +78,10 @@ #define CPIA_YUYV 0 #define CPIA_UYVY 1 -#define STREAM_BUF_SIZE (PAGE_SIZE * 4) +#define STREAM_BUF_SIZE (PAGE_SIZE * 4) +/* #define STREAM_BUF_SIZE (FRAMES_PER_DESC * FRAME_SIZE_PER_DESC) */ -#define SCRATCH_BUF_SIZE (STREAM_BUF_SIZE * 2) +#define SCRATCH_BUF_SIZE (STREAM_BUF_SIZE * 2) #define FRAMES_PER_DESC 10 #define FRAME_SIZE_PER_DESC 960 /* Shouldn't be hardcoded */ @@ -91,54 +92,97 @@ enum { STATE_LINES, /* Parsing lines */ }; +#define CPIA_MAGIC 0x1968 +struct cpia_frame_header { + __u16 magic; /* 0 - 1 */ + __u16 timestamp; /* 2 - 3 */ + __u16 unused; /* 4 - 5 */ + __u16 timestamp1; /* 6 - 7 */ + __u8 unused1[8]; /* 8 - 15 */ + __u8 video_size; /* 16 0 = QCIF, 1 = CIF */ + __u8 sub_sample; /* 17 0 = 4:2:0, 1 = 4:2:2 */ + __u8 yuv_order; /* 18 0 = YUYV, 1 = UYVY */ + __u8 unused2[5]; /* 19 - 23 */ + __u8 col_start; /* 24 */ + __u8 col_end; /* 25 */ + __u8 row_start; /* 26 */ + __u8 row_end; /* 27 */ + __u8 comp_enable; /* 28 0 = non compressed, 1 = compressed */ + __u8 decimation; /* 29 0 = no decimation, 1 = decimation */ + __u8 y_thresh; /* 30 */ + __u8 uv_thresh; /* 31 */ + __u8 system_state; /* 32 */ + __u8 grab_state; /* 33 */ + __u8 stream_state; /* 34 */ + __u8 fatal_error; /* 35 */ + __u8 cmd_error; /* 36 */ + __u8 debug_flags; /* 37 */ + __u8 camera_state_7; /* 38 */ + __u8 camera_state_8; /* 39 */ + __u8 cr_achieved; /* 40 */ + __u8 fr_achieved; /* 41 */ + __u8 unused3[22]; /* 42 - 63 */ +}; + struct usb_device; struct cpia_sbuf { char *data; - int len; struct usb_isoc_desc *isodesc; -#if 0 - void *isodesc; -#endif }; enum { - FRAME_READY, /* Ready to grab into */ + FRAME_UNUSED, /* Unused (no MCAPTURE) */ + FRAME_READY, /* Ready to start grabbing */ FRAME_GRABBING, /* In the process of being grabbed into */ FRAME_DONE, /* Finished grabbing, but not been synced yet */ - FRAME_UNUSED, /* Unused (no MCAPTURE) */ + FRAME_ERROR, /* Something bad happened while processing */ }; struct cpia_frame { - char *data; - int width; - int height; - int state; + char *data; /* Frame buffer */ + + struct cpia_frame_header header; /* Header from stream */ + + int width; /* Width application is expecting */ + int height; /* Height */ + + int hdrwidth; /* Width the frame actually is */ + int hdrheight; /* Height */ + + int grabstate; /* State of grabbing */ + int scanstate; /* State of scanning */ + + int curline; /* Line of frame we're working on */ + + wait_queue_head_t wq; /* Processes waiting */ }; +#define CPIA_NUMFRAMES 2 +#define CPIA_NUMSBUF 2 + struct usb_cpia { struct video_device vdev; /* Device structure */ struct usb_device *dev; - int streaming; + int streaming; /* Are we streaming Isochronous? */ + int grabbing; /* Are we grabbing? */ - char *fbuf; /* Videodev buffer area */ + int compress; /* Should the next frame be compressed? */ - int curframe; - struct cpia_frame frame[2]; /* Double buffering */ + char *fbuf; /* Videodev buffer area */ - int receivesbuf; /* Current receiving sbuf */ - struct cpia_sbuf sbuf[3]; /* Triple buffering */ + int curframe; + struct cpia_frame frame[CPIA_NUMFRAMES]; /* Double buffering */ - int state; /* Current scanning state */ - int curline; + int cursbuf; /* Current receiving sbuf */ + struct cpia_sbuf sbuf[CPIA_NUMSBUF]; /* Double buffering */ - char scratch[SCRATCH_BUF_SIZE]; + /* Scratch space from the Isochronous pipe */ + unsigned char scratch[SCRATCH_BUF_SIZE]; int scratchlen; - - wait_queue_head_t wq; }; #endif |