- 根目录:
- drivers
- media
- usb
- usbvision
- usbvision.h
/*
* USBVISION.H
* usbvision header file
*
* Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de>
* Dwaine Garden <dwainegarden@rogers.com>
*
*
* Report problems to v4l MailingList: linux-media@vger.kernel.org
*
* This module is part of usbvision driver project.
* Updates to driver completed by Dwaine P. Garden
* v4l2 conversion by Thierry Merle <thierry.merle@free.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __LINUX_USBVISION_H
#define __LINUX_USBVISION_H
#include <linux/list.h>
#include <linux/usb.h>
#include <linux/i2c.h>
#include <linux/mutex.h>
#include <media/v4l2-device.h>
#include <media/tuner.h>
#include <linux/videodev2.h>
#define USBVISION_DEBUG /* Turn on debug messages */
#define USBVISION_PWR_REG 0x00
#define USBVISION_SSPND_EN (1 << 1)
#define USBVISION_RES2 (1 << 2)
#define USBVISION_PWR_VID (1 << 5)
#define USBVISION_E2_EN (1 << 7)
#define USBVISION_CONFIG_REG 0x01
#define USBVISION_ADRS_REG 0x02
#define USBVISION_ALTER_REG 0x03
#define USBVISION_FORCE_ALTER_REG 0x04
#define USBVISION_STATUS_REG 0x05
#define USBVISION_IOPIN_REG 0x06
#define USBVISION_IO_1 (1 << 0)
#define USBVISION_IO_2 (1 << 1)
#define USBVISION_AUDIO_IN 0
#define USBVISION_AUDIO_TV 1
#define USBVISION_AUDIO_RADIO 2
#define USBVISION_AUDIO_MUTE 3
#define USBVISION_SER_MODE 0x07
#define USBVISION_CLK_OUT (1 << 0)
#define USBVISION_DAT_IO (1 << 1)
#define USBVISION_SENS_OUT (1 << 2)
#define USBVISION_SER_MODE_SOFT (0 << 4)
#define USBVISION_SER_MODE_SIO (1 << 4)
#define USBVISION_SER_ADRS 0x08
#define USBVISION_SER_CONT 0x09
#define USBVISION_SER_DAT1 0x0A
#define USBVISION_SER_DAT2 0x0B
#define USBVISION_SER_DAT3 0x0C
#define USBVISION_SER_DAT4 0x0D
#define USBVISION_EE_DATA 0x0E
#define USBVISION_EE_LSBAD 0x0F
#define USBVISION_EE_CONT 0x10
#define USBVISION_DRM_CONT 0x12
#define USBVISION_REF (1 << 0)
#define USBVISION_RES_UR (1 << 2)
#define USBVISION_RES_FDL (1 << 3)
#define USBVISION_RES_VDW (1 << 4)
#define USBVISION_DRM_PRM1 0x13
#define USBVISION_DRM_PRM2 0x14
#define USBVISION_DRM_PRM3 0x15
#define USBVISION_DRM_PRM4 0x16
#define USBVISION_DRM_PRM5 0x17
#define USBVISION_DRM_PRM6 0x18
#define USBVISION_DRM_PRM7 0x19
#define USBVISION_DRM_PRM8 0x1A
#define USBVISION_VIN_REG1 0x1B
#define USBVISION_8_422_SYNC 0x01
#define USBVISION_16_422_SYNC 0x02
#define USBVISION_VSNC_POL (1 << 3)
#define USBVISION_HSNC_POL (1 << 4)
#define USBVISION_FID_POL (1 << 5)
#define USBVISION_HVALID_PO (1 << 6)
#define USBVISION_VCLK_POL (1 << 7)
#define USBVISION_VIN_REG2 0x1C
#define USBVISION_AUTO_FID (1 << 0)
#define USBVISION_NONE_INTER (1 << 1)
#define USBVISION_NOHVALID (1 << 2)
#define USBVISION_UV_ID (1 << 3)
#define USBVISION_FIX_2C (1 << 4)
#define USBVISION_SEND_FID (1 << 5)
#define USBVISION_KEEP_BLANK (1 << 7)
#define USBVISION_LXSIZE_I 0x1D
#define USBVISION_MXSIZE_I 0x1E
#define USBVISION_LYSIZE_I 0x1F
#define USBVISION_MYSIZE_I 0x20
#define USBVISION_LX_OFFST 0x21
#define USBVISION_MX_OFFST 0x22
#define USBVISION_LY_OFFST 0x23
#define USBVISION_MY_OFFST 0x24
#define USBVISION_FRM_RATE 0x25
#define USBVISION_LXSIZE_O 0x26
#define USBVISION_MXSIZE_O 0x27
#define USBVISION_LYSIZE_O 0x28
#define USBVISION_MYSIZE_O 0x29
#define USBVISION_FILT_CONT 0x2A
#define USBVISION_VO_MODE 0x2B
#define USBVISION_INTRA_CYC 0x2C
#define USBVISION_STRIP_SZ 0x2D
#define USBVISION_FORCE_INTRA 0x2E
#define USBVISION_FORCE_UP 0x2F
#define USBVISION_BUF_THR 0x30
#define USBVISION_DVI_YUV 0x31
#define USBVISION_AUDIO_CONT 0x32
#define USBVISION_AUD_PK_LEN 0x33
#define USBVISION_BLK_PK_LEN 0x34
#define USBVISION_PCM_THR1 0x38
#define USBVISION_PCM_THR2 0x39
#define USBVISION_DIST_THR_L 0x3A
#define USBVISION_DIST_THR_H 0x3B
#define USBVISION_MAX_DIST_L 0x3C
#define USBVISION_MAX_DIST_H 0x3D
#define USBVISION_OP_CODE 0x33
#define MAX_BYTES_PER_PIXEL 4
#define MIN_FRAME_WIDTH 64
#define MAX_USB_WIDTH 320 /* 384 */
#define MAX_FRAME_WIDTH 320 /* 384 */ /* streching sometimes causes crashes*/
#define MIN_FRAME_HEIGHT 48
#define MAX_USB_HEIGHT 240 /* 288 */
#define MAX_FRAME_HEIGHT 240 /* 288 */ /* Streching sometimes causes crashes*/
#define MAX_FRAME_SIZE (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * MAX_BYTES_PER_PIXEL)
#define USBVISION_CLIPMASK_SIZE (MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT / 8) /* bytesize of clipmask */
#define USBVISION_URB_FRAMES 32
#define USBVISION_NUM_HEADERMARKER 20
#define USBVISION_NUMFRAMES 3 /* Maximum number of frames an application can get */
#define USBVISION_NUMSBUF 2 /* Dimensioning the USB S buffering */
#define USBVISION_POWEROFF_TIME (3 * HZ) /* 3 seconds */
#define FRAMERATE_MIN 0
#define FRAMERATE_MAX 31
enum {
ISOC_MODE_YUV422 = 0x03,
ISOC_MODE_YUV420 = 0x14,
ISOC_MODE_COMPRESS = 0x60,
};
/* This macro restricts an int variable to an inclusive range */
#define RESTRICT_TO_RANGE(v, mi, ma) \
{ if (((int)v) < (mi)) (v) = (mi); else if ((v) > (ma)) (v) = (ma); }
/*
* We use macros to do YUV -> RGB conversion because this is
* very important for speed and totally unimportant for size.
*
* YUV -> RGB Conversion
* ---------------------
*
* B = 1.164*(Y-16) + 2.018*(V-128)
* G = 1.164*(Y-16) - 0.813*(U-128) - 0.391*(V-128)
* R = 1.164*(Y-16) + 1.596*(U-128)
*
* If you fancy integer arithmetics (as you should), hear this:
*
* 65536*B = 76284*(Y-16) + 132252*(V-128)
* 65536*G = 76284*(Y-16) - 53281*(U-128) - 25625*(V-128)
* 65536*R = 76284*(Y-16) + 104595*(U-128)
*
* Make sure the output values are within [0..255] range.
*/
#define LIMIT_RGB(x) (((x) < 0) ? 0 : (((x) > 255) ? 255 : (x)))
#define YUV_TO_RGB_BY_THE_BOOK(my, mu, mv, mr, mg, mb) { \
int mm_y, mm_yc, mm_u, mm_v, mm_r, mm_g, mm_b; \
mm_y = (my) - 16; \
mm_u = (mu) - 128; \
mm_v = (mv) - 128; \
mm_yc = mm_y * 76284; \
mm_b = (mm_yc + 132252 * mm_v) >> 16; \
mm_g = (mm_yc - 53281 * mm_u - 25625 * mm_v) >> 16; \
mm_r = (mm_yc + 104595 * mm_u) >> 16; \
mb = LIMIT_RGB(mm_b); \
mg = LIMIT_RGB(mm_g); \
mr = LIMIT_RGB(mm_r); \
}
/* Debugging aid */
#define USBVISION_SAY_AND_WAIT(what) { \
wait_queue_head_t wq; \
init_waitqueue_head(&wq); \
printk(KERN_INFO "Say: %s\n", what); \
interruptible_sleep_on_timeout(&wq, HZ * 3); \
}
/*
* This macro checks if usbvision is still operational. The 'usbvision'
* pointer must be valid, usbvision->dev must be valid, we are not
* removing the device and the device has not erred on us.
*/
#define USBVISION_IS_OPERATIONAL(udevice) (\
(udevice != NULL) && \
((udevice)->dev != NULL) && \
((udevice)->last_error == 0) && \
(!(udevice)->remove_pending))
#define I2C_USB_ADAP_MAX 16
#define USBVISION_NORMS (V4L2_STD_PAL | V4L2_STD_NTSC | V4L2_STD_SECAM | V4L2_STD_PAL_M)
/* ----------------------------------------------------------------- */
/* usbvision video structures */
/* ----------------------------------------------------------------- */
enum scan_state {
scan_state_scanning, /* Scanning for header */
scan_state_lines /* Parsing lines */
};
/* Completion states of the data parser */
enum parse_state {
parse_state_continue, /* Just parse next item */
parse_state_next_frame, /* Frame done, send it to V4L */
parse_state_out, /* Not enough data for frame */
parse_state_end_parse /* End parsing */
};
enum frame_state {
frame_state_unused, /* Unused (no MCAPTURE) */
frame_state_ready, /* Ready to start grabbing */
frame_state_grabbing, /* In the process of being grabbed into */
frame_state_done, /* Finished grabbing, but not been synced yet */
frame_state_done_hold, /* Are syncing or reading */
frame_state_error, /* Something bad happened while processing */
};
/* stream states */
enum stream_state {
stream_off, /* Driver streaming is completely OFF */
stream_idle, /* Driver streaming is ready to be put ON by the application */
stream_interrupt, /* Driver streaming must be interrupted */
stream_on, /* Driver streaming is put ON by the application */
};
enum isoc_state {
isoc_state_in_frame, /* Isoc packet is member of frame */
isoc_state_no_frame, /* Isoc packet is not member of any frame */
};
struct usb_device;
struct usbvision_sbuf {
char *data;
struct urb *urb;
};
#define USBVISION_MAGIC_1 0x55
#define USBVISION_MAGIC_2 0xAA
#define USBVISION_HEADER_LENGTH 0x0c
#define USBVISION_SAA7111_ADDR 0x48
#define USBVISION_SAA7113_ADDR 0x4a
#define USBVISION_IIC_LRACK 0x20
#define USBVISION_IIC_LRNACK 0x30
#define USBVISION_FRAME_FORMAT_PARAM_INTRA (1<<7)
struct usbvision_v4l2_format_st {
int supported;
int bytes_per_pixel;
int depth;
int format;
char *desc;
};
#define USBVISION_SUPPORTED_PALETTES ARRAY_SIZE(usbvision_v4l2_format)
struct usbvision_frame_header {
unsigned char magic_1; /* 0 magic */
unsigned char magic_2; /* 1 magic */
unsigned char header_length; /* 2 */
unsigned char frame_num; /* 3 */
unsigned char frame_phase; /* 4 */
unsigned char frame_latency; /* 5 */
unsigned char data_format; /* 6 */
unsigned char format_param; /* 7 */
unsigned char frame_width_lo; /* 8 */
unsigned char frame_width_hi; /* 9 */
unsigned char frame_height_lo; /* 10 */
unsigned char frame_height_hi; /* 11 */
__u16 frame_width; /* 8 - 9 after endian correction*/
__u16 frame_height; /* 10 - 11 after endian correction*/
};
struct usbvision_frame {
char *data; /* Frame buffer */
struct usbvision_frame_header isoc_header; /* Header from stream */
int width; /* Width application is expecting */
int height; /* Height */
int index; /* Frame index */
int frmwidth; /* Width the frame actually is */
int frmheight; /* Height */
volatile int grabstate; /* State of grabbing */
int scanstate; /* State of scanning */
struct list_head frame;
int curline; /* Line of frame we're working on */
long scanlength; /* uncompressed, raw data length of frame */
long bytes_read; /* amount of scanlength that has been read from data */
struct usbvision_v4l2_format_st v4l2_format; /* format the user needs*/
int v4l2_linesize; /* bytes for one videoline*/
struct timeval timestamp;
int sequence; /* How many video frames we send to user */
};
#define CODEC_SAA7113 7113
#define CODEC_SAA7111 7111
#define CODEC_WEBCAM 3000
#define BRIDGE_NT1003 1003
#define BRIDGE_NT1004 1004
#define BRIDGE_NT1005 1005
struct usbvision_device_data_st {
__u64 video_norm;
const char *model_string;
int interface; /* to handle special interface number like BELKIN and Hauppauge WinTV-USB II */
__u16 codec;
unsigned video_channels:3;
unsigned audio_channels:2;
unsigned radio:1;
unsigned vbi:1;
unsigned tuner:1;
unsigned vin_reg1_override:1; /* Override default value with */
unsigned vin_reg2_override:1; /* vin_reg1, vin_reg2, etc. */
unsigned dvi_yuv_override:1;
__u8 vin_reg1;
__u8 vin_reg2;
__u8 dvi_yuv;
__u8 tuner_type;
__s16 x_offset;
__s16 y_offset;
};
/* Declared on usbvision-cards.c */
extern struct usbvision_device_data_st usbvision_device_data[];
extern struct usb_device_id usbvision_table[];
struct usb_usbvision {
struct v4l2_device v4l2_dev;
struct video_device *vdev; /* Video Device */
struct video_device *rdev; /* Radio Device */
/* i2c Declaration Section*/
struct i2c_adapter i2c_adap;
int registered_i2c;
struct urb *ctrl_urb;
unsigned char ctrl_urb_buffer[8];
int ctrl_urb_busy;
struct usb_ctrlrequest ctrl_urb_setup;
wait_queue_head_t ctrl_urb_wq; /* Processes waiting */
/* configuration part */
int have_tuner;
int tuner_type;
int bridge_type; /* NT1003, NT1004, NT1005 */
int radio;
int video_inputs; /* # of inputs */
unsigned long freq;
int audio_mute;
int audio_channel;
int isoc_mode; /* format of video data for the usb isoc-transfer */
unsigned int nr; /* Number of the device */
/* Device structure */
struct usb_device *dev;
/* usb transfer */
int num_alt; /* Number of alternative settings */
unsigned int *alt_max_pkt_size; /* array of max_packet_size */
unsigned char iface; /* Video interface number */
unsigned char iface_alt; /* Alt settings */
unsigned char vin_reg2_preset;
struct mutex v4l2_lock;
struct timer_list power_off_timer;
struct work_struct power_off_work;
int power; /* is the device powered on? */
int user; /* user count for exclusive use */
int initialized; /* Had we already sent init sequence? */
int dev_model; /* What type of USBVISION device we got? */
enum stream_state streaming; /* Are we streaming Isochronous? */
int last_error; /* What calamity struck us? */
int curwidth; /* width of the frame the device is currently set to*/
int curheight; /* height of the frame the device is currently set to*/
int stretch_width; /* stretch-factor for frame width (from usb to screen)*/
int stretch_height; /* stretch-factor for frame height (from usb to screen)*/
char *fbuf; /* Videodev buffer area for mmap*/
int max_frame_size; /* Bytes in one video frame */
int fbuf_size; /* Videodev buffer size */
spinlock_t queue_lock; /* spinlock for protecting mods on inqueue and outqueue */
struct list_head inqueue, outqueue; /* queued frame list and ready to dequeue frame list */
wait_queue_head_t wait_frame; /* Processes waiting */
wait_queue_head_t wait_stream; /* Processes waiting */
struct usbvision_frame *cur_frame; /* pointer to current frame, set by usbvision_find_header */
struct usbvision_frame frame[USBVISION_NUMFRAMES]; /* frame buffer */
int num_frames; /* number of frames allocated */
struct usbvision_sbuf sbuf[USBVISION_NUMSBUF]; /* S buffering */
volatile int remove_pending; /* If set then about to exit */
/* Scratch space from the Isochronous Pipe.*/
unsigned char *scratch;
int scratch_read_ptr;
int scratch_write_ptr;
int scratch_headermarker[USBVISION_NUM_HEADERMARKER];
int scratch_headermarker_read_ptr;
int scratch_headermarker_write_ptr;
enum isoc_state isocstate;
struct usbvision_v4l2_format_st palette;
struct v4l2_capability vcap; /* Video capabilities */
unsigned int ctl_input; /* selected input */
v4l2_std_id tvnorm_id; /* selected tv norm */
unsigned char video_endp; /* 0x82 for USBVISION devices based */
/* Decompression stuff: */
unsigned char *intra_frame_buffer; /* Buffer for reference frame */
int block_pos; /* for test only */
int request_intra; /* 0 = normal; 1 = intra frame is requested; */
int last_isoc_frame_num; /* check for lost isoc frames */
int isoc_packet_size; /* need to calculate used_bandwidth */
int used_bandwidth; /* used bandwidth 0-100%, need to set compr_level */
int compr_level; /* How strong (100) or weak (0) is compression */
int last_compr_level; /* How strong (100) or weak (0) was compression */
int usb_bandwidth; /* Mbit/s */
/* Statistics that can be overlayed on the screen */
unsigned long isoc_urb_count; /* How many URBs we received so far */
unsigned long urb_length; /* Length of last URB */
unsigned long isoc_data_count; /* How many bytes we received */
unsigned long header_count; /* How many frame headers we found */
unsigned long scratch_ovf_count; /* How many times we overflowed scratch */
unsigned long isoc_skip_count; /* How many empty ISO packets received */
unsigned long isoc_err_count; /* How many bad ISO packets received */
unsigned long isoc_packet_count; /* How many packets we totally got */
unsigned long time_in_irq; /* How long do we need for interrupt */
int isoc_measure_bandwidth_count;
int frame_num; /* How many video frames we send to user */
int max_strip_len; /* How big is the biggest strip */
int comprblock_pos;
int strip_len_errors; /* How many times was block_pos greater than strip_len */
int strip_magic_errors;
int strip_line_number_errors;
int compr_block_types[4];
};
static inline struct usb_usbvision *to_usbvision(struct v4l2_device *v4l2_dev)
{
return container_of(v4l2_dev, struct usb_usbvision, v4l2_dev);
}
#define call_all(usbvision, o, f, args...) \
v4l2_device_call_all(&usbvision->v4l2_dev, 0, o, f, ##args)
/* --------------------------------------------------------------- */
/* defined in usbvision-i2c.c */
/* i2c-algo-usb declaration */
/* --------------------------------------------------------------- */
/* ----------------------------------------------------------------------- */
/* usbvision specific I2C functions */
/* ----------------------------------------------------------------------- */
int usbvision_i2c_register(struct usb_usbvision *usbvision);
int usbvision_i2c_unregister(struct usb_usbvision *usbvision);
/* defined in usbvision-core.c */
int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg);
int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg,
unsigned char value);
int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames);
void usbvision_frames_free(struct usb_usbvision *usbvision);
int usbvision_scratch_alloc(struct usb_usbvision *usbvision);
void usbvision_scratch_free(struct usb_usbvision *usbvision);
int usbvision_decompress_alloc(struct usb_usbvision *usbvision);
void usbvision_decompress_free(struct usb_usbvision *usbvision);
int usbvision_setup(struct usb_usbvision *usbvision, int format);
int usbvision_init_isoc(struct usb_usbvision *usbvision);
int usbvision_restart_isoc(struct usb_usbvision *usbvision);
void usbvision_stop_isoc(struct usb_usbvision *usbvision);
int usbvision_set_alternate(struct usb_usbvision *dev);
int usbvision_set_audio(struct usb_usbvision *usbvision, int audio_channel);
int usbvision_audio_off(struct usb_usbvision *usbvision);
int usbvision_begin_streaming(struct usb_usbvision *usbvision);
void usbvision_empty_framequeues(struct usb_usbvision *dev);
int usbvision_stream_interrupt(struct usb_usbvision *dev);
int usbvision_muxsel(struct usb_usbvision *usbvision, int channel);
int usbvision_set_input(struct usb_usbvision *usbvision);
int usbvision_set_output(struct usb_usbvision *usbvision, int width, int height);
void usbvision_init_power_off_timer(struct usb_usbvision *usbvision);
void usbvision_set_power_off_timer(struct usb_usbvision *usbvision);
void usbvision_reset_power_off_timer(struct usb_usbvision *usbvision);
int usbvision_power_off(struct usb_usbvision *usbvision);
int usbvision_power_on(struct usb_usbvision *usbvision);
#endif /* __LINUX_USBVISION_H */
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/