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Diffstat (limited to 'drivers/usb/media/usbvideo.h')
| -rw-r--r-- | drivers/usb/media/usbvideo.h | 393 |
1 files changed, 0 insertions, 393 deletions
diff --git a/drivers/usb/media/usbvideo.h b/drivers/usb/media/usbvideo.h deleted file mode 100644 index 6c390a1f981..00000000000 --- a/drivers/usb/media/usbvideo.h +++ /dev/null @@ -1,393 +0,0 @@ -/* - * 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, 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 usbvideo_h -#define usbvideo_h - -#include <linux/config.h> -#include <linux/videodev.h> -#include <linux/usb.h> - -/* Most helpful debugging aid */ -#define assert(expr) ((void) ((expr) ? 0 : (err("assert failed at line %d",__LINE__)))) - -#define USBVIDEO_REPORT_STATS 1 /* Set to 0 to block statistics on close */ - -/* Bit flags (options) */ -#define FLAGS_RETRY_VIDIOCSYNC (1 << 0) -#define FLAGS_MONOCHROME (1 << 1) -#define FLAGS_DISPLAY_HINTS (1 << 2) -#define FLAGS_OVERLAY_STATS (1 << 3) -#define FLAGS_FORCE_TESTPATTERN (1 << 4) -#define FLAGS_SEPARATE_FRAMES (1 << 5) -#define FLAGS_CLEAN_FRAMES (1 << 6) -#define FLAGS_NO_DECODING (1 << 7) - -/* Bit flags for frames (apply to the frame where they are specified) */ -#define USBVIDEO_FRAME_FLAG_SOFTWARE_CONTRAST (1 << 0) - -/* Camera capabilities (maximum) */ -#define CAMERA_URB_FRAMES 32 -#define CAMERA_MAX_ISO_PACKET 1023 /* 1022 actually sent by camera */ -#define FRAMES_PER_DESC (CAMERA_URB_FRAMES) -#define FRAME_SIZE_PER_DESC (CAMERA_MAX_ISO_PACKET) - -/* This macro restricts an int variable to an inclusive range */ -#define RESTRICT_TO_RANGE(v,mi,ma) { if ((v) < (mi)) (v) = (mi); else if ((v) > (ma)) (v) = (ma); } - -#define V4L_BYTES_PER_PIXEL 3 /* Because we produce RGB24 */ - -/* - * Use this macro to construct constants for different video sizes. - * We have to deal with different video sizes that have to be - * configured in the device or compared against when we receive - * a data. Normally one would define a bunch of VIDEOSIZE_x_by_y - * #defines and that's the end of story. However this solution - * does not allow to convert between real pixel sizes and the - * constant (integer) value that may be used to tag a frame or - * whatever. The set of macros below constructs videosize constants - * from the pixel size and allows to reconstruct the pixel size - * from the combined value later. - */ -#define VIDEOSIZE(x,y) (((x) & 0xFFFFL) | (((y) & 0xFFFFL) << 16)) -#define VIDEOSIZE_X(vs) ((vs) & 0xFFFFL) -#define VIDEOSIZE_Y(vs) (((vs) >> 16) & 0xFFFFL) -typedef unsigned long videosize_t; - -/* - * This macro checks if the camera is still operational. The 'uvd' - * pointer must be valid, uvd->dev must be valid, we are not - * removing the device and the device has not erred on us. - */ -#define CAMERA_IS_OPERATIONAL(uvd) (\ - (uvd != NULL) && \ - ((uvd)->dev != NULL) && \ - ((uvd)->last_error == 0) && \ - (!(uvd)->remove_pending)) - -/* - * 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); \ -} - -#define RING_QUEUE_SIZE (128*1024) /* Must be a power of 2 */ -#define RING_QUEUE_ADVANCE_INDEX(rq,ind,n) (rq)->ind = ((rq)->ind + (n)) & ((rq)->length-1) -#define RING_QUEUE_DEQUEUE_BYTES(rq,n) RING_QUEUE_ADVANCE_INDEX(rq,ri,n) -#define RING_QUEUE_PEEK(rq,ofs) ((rq)->queue[((ofs) + (rq)->ri) & ((rq)->length-1)]) - -struct RingQueue { - unsigned char *queue; /* Data from the Isoc data pump */ - int length; /* How many bytes allocated for the queue */ - int wi; /* That's where we write */ - int ri; /* Read from here until you hit write index */ - wait_queue_head_t wqh; /* Processes waiting */ -}; - -enum ScanState { - ScanState_Scanning, /* Scanning for header */ - ScanState_Lines /* Parsing lines */ -}; - -/* Completion states of the data parser */ -enum ParseState { - scan_Continue, /* Just parse next item */ - scan_NextFrame, /* Frame done, send it to V4L */ - scan_Out, /* Not enough data for frame */ - scan_EndParse /* End parsing */ -}; - -enum FrameState { - FrameState_Unused, /* Unused (no MCAPTURE) */ - FrameState_Ready, /* Ready to start grabbing */ - FrameState_Grabbing, /* In the process of being grabbed into */ - FrameState_Done, /* Finished grabbing, but not been synced yet */ - FrameState_Done_Hold, /* Are syncing or reading */ - FrameState_Error, /* Something bad happened while processing */ -}; - -/* - * Some frames may contain only even or odd lines. This type - * specifies what type of deinterlacing is required. - */ -enum Deinterlace { - Deinterlace_None=0, - Deinterlace_FillOddLines, - Deinterlace_FillEvenLines -}; - -#define USBVIDEO_NUMFRAMES 2 /* How many frames we work with */ -#define USBVIDEO_NUMSBUF 2 /* How many URBs linked in a ring */ - -/* This structure represents one Isoc request - URB and buffer */ -struct usbvideo_sbuf { - char *data; - struct urb *urb; -}; - -struct usbvideo_frame { - char *data; /* Frame buffer */ - unsigned long header; /* Significant bits from the header */ - - videosize_t canvas; /* The canvas (max. image) allocated */ - videosize_t request; /* That's what the application asked for */ - unsigned short palette; /* The desired format */ - - enum FrameState frameState;/* State of grabbing */ - enum ScanState scanstate; /* State of scanning */ - enum Deinterlace deinterlace; - int flags; /* USBVIDEO_FRAME_FLAG_xxx bit flags */ - - int curline; /* Line of frame we're working on */ - - long seqRead_Length; /* Raw data length of frame */ - long seqRead_Index; /* Amount of data that has been already read */ - - void *user; /* Additional data that user may need */ -}; - -/* Statistics that can be overlaid on screen */ -struct usbvideo_statistics { - unsigned long frame_num; /* Sequential number of the frame */ - unsigned long urb_count; /* How many URBs we received so far */ - unsigned long urb_length; /* Length of last URB */ - unsigned long data_count; /* How many bytes we received */ - unsigned long header_count; /* How many frame headers we found */ - unsigned long iso_skip_count; /* How many empty ISO packets received */ - unsigned long iso_err_count; /* How many bad ISO packets received */ -}; - -struct usbvideo; - -struct uvd { - struct video_device vdev; /* Must be the first field! */ - struct usb_device *dev; - struct usbvideo *handle; /* Points back to the struct usbvideo */ - void *user_data; /* Camera-dependent data */ - int user_size; /* Size of that camera-dependent data */ - int debug; /* Debug level for usbvideo */ - unsigned char iface; /* Video interface number */ - unsigned char video_endp; - unsigned char ifaceAltActive; - unsigned char ifaceAltInactive; /* Alt settings */ - unsigned long flags; /* FLAGS_USBVIDEO_xxx */ - unsigned long paletteBits; /* Which palettes we accept? */ - unsigned short defaultPalette; /* What palette to use for read() */ - struct semaphore lock; - int user; /* user count for exclusive use */ - - videosize_t videosize; /* Current setting */ - videosize_t canvas; /* This is the width,height of the V4L canvas */ - int max_frame_size; /* Bytes in one video frame */ - - int uvd_used; /* Is this structure in use? */ - int streaming; /* Are we streaming Isochronous? */ - int grabbing; /* Are we grabbing? */ - int settingsAdjusted; /* Have we adjusted contrast etc.? */ - int last_error; /* What calamity struck us? */ - - char *fbuf; /* Videodev buffer area */ - int fbuf_size; /* Videodev buffer size */ - - int curframe; - int iso_packet_len; /* Videomode-dependent, saves bus bandwidth */ - - struct RingQueue dp; /* Isoc data pump */ - struct usbvideo_frame frame[USBVIDEO_NUMFRAMES]; - struct usbvideo_sbuf sbuf[USBVIDEO_NUMSBUF]; - - volatile int remove_pending; /* If set then about to exit */ - - struct video_picture vpic, vpic_old; /* Picture settings */ - struct video_capability vcap; /* Video capabilities */ - struct video_channel vchan; /* May be used for tuner support */ - struct usbvideo_statistics stats; - char videoName[32]; /* Holds name like "video7" */ -}; - -/* - * usbvideo callbacks (virtual methods). They are set when usbvideo - * services are registered. All of these default to NULL, except those - * that default to usbvideo-provided methods. - */ -struct usbvideo_cb { - int (*probe)(struct usb_interface *, const struct usb_device_id *); - void (*userFree)(struct uvd *); - void (*disconnect)(struct usb_interface *); - int (*setupOnOpen)(struct uvd *); - void (*videoStart)(struct uvd *); - void (*videoStop)(struct uvd *); - void (*processData)(struct uvd *, struct usbvideo_frame *); - void (*postProcess)(struct uvd *, struct usbvideo_frame *); - void (*adjustPicture)(struct uvd *); - int (*getFPS)(struct uvd *); - int (*overlayHook)(struct uvd *, struct usbvideo_frame *); - int (*getFrame)(struct uvd *, int); - int (*startDataPump)(struct uvd *uvd); - void (*stopDataPump)(struct uvd *uvd); - int (*setVideoMode)(struct uvd *uvd, struct video_window *vw); -}; - -struct usbvideo { - int num_cameras; /* As allocated */ - struct usb_driver usbdrv; /* Interface to the USB stack */ - char drvName[80]; /* Driver name */ - struct semaphore lock; /* Mutex protecting camera structures */ - struct usbvideo_cb cb; /* Table of callbacks (virtual methods) */ - struct video_device vdt; /* Video device template */ - struct uvd *cam; /* Array of camera structures */ - struct module *md_module; /* Minidriver module */ -}; - - -/* - * This macro retrieves callback address from the struct uvd object. - * No validity checks are done here, so be sure to check the - * callback beforehand with VALID_CALLBACK. - */ -#define GET_CALLBACK(uvd,cbName) ((uvd)->handle->cb.cbName) - -/* - * This macro returns either callback pointer or NULL. This is safe - * macro, meaning that most of components of data structures involved - * may be NULL - this only results in NULL being returned. You may - * wish to use this macro to make sure that the callback is callable. - * However keep in mind that those checks take time. - */ -#define VALID_CALLBACK(uvd,cbName) ((((uvd) != NULL) && \ - ((uvd)->handle != NULL)) ? GET_CALLBACK(uvd,cbName) : NULL) - -int RingQueue_Dequeue(struct RingQueue *rq, unsigned char *dst, int len); -int RingQueue_Enqueue(struct RingQueue *rq, const unsigned char *cdata, int n); -void RingQueue_WakeUpInterruptible(struct RingQueue *rq); -void RingQueue_Flush(struct RingQueue *rq); - -static inline int RingQueue_GetLength(const struct RingQueue *rq) -{ - return (rq->wi - rq->ri + rq->length) & (rq->length-1); -} - -static inline int RingQueue_GetFreeSpace(const struct RingQueue *rq) -{ - return rq->length - RingQueue_GetLength(rq); -} - -void usbvideo_DrawLine( - struct usbvideo_frame *frame, - int x1, int y1, - int x2, int y2, - unsigned char cr, unsigned char cg, unsigned char cb); -void usbvideo_HexDump(const unsigned char *data, int len); -void usbvideo_SayAndWait(const char *what); -void usbvideo_TestPattern(struct uvd *uvd, int fullframe, int pmode); - -/* Memory allocation routines */ -unsigned long usbvideo_kvirt_to_pa(unsigned long adr); - -int usbvideo_register( - struct usbvideo **pCams, - const int num_cams, - const int num_extra, - const char *driverName, - const struct usbvideo_cb *cbTable, - struct module *md, - const struct usb_device_id *id_table); -struct uvd *usbvideo_AllocateDevice(struct usbvideo *cams); -int usbvideo_RegisterVideoDevice(struct uvd *uvd); -void usbvideo_Deregister(struct usbvideo **uvt); - -int usbvideo_v4l_initialize(struct video_device *dev); - -void usbvideo_DeinterlaceFrame(struct uvd *uvd, struct usbvideo_frame *frame); - -/* - * This code performs bounds checking - use it when working with - * new formats, or else you may get oopses all over the place. - * If pixel falls out of bounds then it gets shoved back (as close - * to place of offence as possible) and is painted bright red. - * - * There are two important concepts: frame width, height and - * V4L canvas width, height. The former is the area requested by - * the application -for this very frame-. The latter is the largest - * possible frame that we can serve (we advertise that via V4L ioctl). - * The frame data is expected to be formatted as lines of length - * VIDEOSIZE_X(fr->request), total VIDEOSIZE_Y(frame->request) lines. - */ -static inline void RGB24_PUTPIXEL( - struct usbvideo_frame *fr, - int ix, int iy, - unsigned char vr, - unsigned char vg, - unsigned char vb) -{ - register unsigned char *pf; - int limiter = 0, mx, my; - mx = ix; - my = iy; - if (mx < 0) { - mx=0; - limiter++; - } else if (mx >= VIDEOSIZE_X((fr)->request)) { - mx= VIDEOSIZE_X((fr)->request) - 1; - limiter++; - } - if (my < 0) { - my = 0; - limiter++; - } else if (my >= VIDEOSIZE_Y((fr)->request)) { - my = VIDEOSIZE_Y((fr)->request) - 1; - limiter++; - } - pf = (fr)->data + V4L_BYTES_PER_PIXEL*((iy)*VIDEOSIZE_X((fr)->request) + (ix)); - if (limiter) { - *pf++ = 0; - *pf++ = 0; - *pf++ = 0xFF; - } else { - *pf++ = (vb); - *pf++ = (vg); - *pf++ = (vr); - } -} - -#endif /* usbvideo_h */ |