#ifndef cpia_h #define cpia_h /* * CPiA Parallel Port Video4Linux driver * * Supports CPiA based parallel port Video Camera's. * * (C) Copyright 1999 Bas Huisman, * Peter Pregler, * Scott J. Bertin, * VLSI Vision Ltd. * * 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. */ #define CPIA_MAJ_VER 1 #define CPIA_MIN_VER 2 #define CPIA_PATCH_VER 3 #define CPIA_PP_MAJ_VER CPIA_MAJ_VER #define CPIA_PP_MIN_VER CPIA_MIN_VER #define CPIA_PP_PATCH_VER CPIA_PATCH_VER #define CPIA_USB_MAJ_VER CPIA_MAJ_VER #define CPIA_USB_MIN_VER CPIA_MIN_VER #define CPIA_USB_PATCH_VER CPIA_PATCH_VER #define CPIA_MAX_FRAME_SIZE_UNALIGNED (352 * 288 * 4) /* CIF at RGB32 */ #define CPIA_MAX_FRAME_SIZE ((CPIA_MAX_FRAME_SIZE_UNALIGNED + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1)) /* align above to PAGE_SIZE */ #ifdef __KERNEL__ #include <asm/uaccess.h> #include <linux/videodev.h> #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> #include <linux/list.h> #include <linux/mutex.h> struct cpia_camera_ops { /* open sets privdata to point to structure for this camera. * Returns negative value on error, otherwise 0. */ int (*open)(void *privdata); /* Registers callback function cb to be called with cbdata * when an image is ready. If cb is NULL, only single image grabs * should be used. cb should immediately call streamRead to read * the data or data may be lost. Returns negative value on error, * otherwise 0. */ int (*registerCallback)(void *privdata, void (*cb)(void *cbdata), void *cbdata); /* transferCmd sends commands to the camera. command MUST point to * an 8 byte buffer in kernel space. data can be NULL if no extra * data is needed. The size of the data is given by the last 2 * bytes of command. data must also point to memory in kernel space. * Returns negative value on error, otherwise 0. */ int (*transferCmd)(void *privdata, u8 *command, u8 *data); /* streamStart initiates stream capture mode. * Returns negative value on error, otherwise 0. */ int (*streamStart)(void *privdata); /* streamStop terminates stream capture mode. * Returns negative value on error, otherwise 0. */ int (*streamStop)(void *privdata); /* streamRead reads a frame from the camera. buffer points to a * buffer large enough to hold a complete frame in kernel space. * noblock indicates if this should be a non blocking read. * Returns the number of bytes read, or negative value on error. */ int (*streamRead)(void *privdata, u8 *buffer, int noblock); /* close disables the device until open() is called again. * Returns negative value on error, otherwise 0. */ int (*close)(void *privdata); /* If wait_for_stream_ready is non-zero, wait until the streamState * is STREAM_READY before calling streamRead. */ int wait_for_stream_ready; /* * Used to maintain lowlevel module usage counts */ struct module *owner; }; struct cpia_frame { u8 *data; int count; int width; int height; volatile int state; }; struct cam_params { struct { u8 firmwareVersion; u8 firmwareRevision; u8 vcVersion; u8 vcRevision; } version; struct { u16 vendor; u16 product; u16 deviceRevision; } pnpID; struct { u8 vpVersion; u8 vpRevision; u16 cameraHeadID; } vpVersion; struct { u8 systemState; u8 grabState; u8 streamState; u8 fatalError; u8 cmdError; u8 debugFlags; u8 vpStatus; u8 errorCode; } status; struct { u8 brightness; u8 contrast; u8 saturation; } colourParams; struct { u8 gainMode; u8 expMode; u8 compMode; u8 centreWeight; u8 gain; u8 fineExp; u8 coarseExpLo; u8 coarseExpHi; u8 redComp; u8 green1Comp; u8 green2Comp; u8 blueComp; } exposure; struct { u8 balanceMode; u8 redGain; u8 greenGain; u8 blueGain; } colourBalance; struct { u8 divisor; u8 baserate; } sensorFps; struct { u8 gain1; u8 gain2; u8 gain4; u8 gain8; } apcor; struct { u8 disabled; u8 flickerMode; u8 coarseJump; int allowableOverExposure; } flickerControl; struct { u8 gain1; u8 gain2; u8 gain4; u8 gain8; } vlOffset; struct { u8 mode; u8 decimation; } compression; struct { u8 frTargeting; u8 targetFR; u8 targetQ; } compressionTarget; struct { u8 yThreshold; u8 uvThreshold; } yuvThreshold; struct { u8 hysteresis; u8 threshMax; u8 smallStep; u8 largeStep; u8 decimationHysteresis; u8 frDiffStepThresh; u8 qDiffStepThresh; u8 decimationThreshMod; } compressionParams; struct { u8 videoSize; /* CIF/QCIF */ u8 subSample; u8 yuvOrder; } format; struct { /* Intel QX3 specific data */ u8 qx3_detected; /* a QX3 is present */ u8 toplight; /* top light lit , R/W */ u8 bottomlight; /* bottom light lit, R/W */ u8 button; /* snapshot button pressed (R/O) */ u8 cradled; /* microscope is in cradle (R/O) */ } qx3; struct { u8 colStart; /* skip first 8*colStart pixels */ u8 colEnd; /* finish at 8*colEnd pixels */ u8 rowStart; /* skip first 4*rowStart lines */ u8 rowEnd; /* finish at 4*rowEnd lines */ } roi; u8 ecpTiming; u8 streamStartLine; }; enum v4l_camstates { CPIA_V4L_IDLE = 0, CPIA_V4L_ERROR, CPIA_V4L_COMMAND, CPIA_V4L_GRABBING, CPIA_V4L_STREAMING, CPIA_V4L_STREAMING_PAUSED, }; #define FRAME_NUM 2 /* double buffering for now */ struct cam_data { struct list_head cam_data_list; struct mutex busy_lock; /* guard against SMP multithreading */ struct cpia_camera_ops *ops; /* lowlevel driver operations */ void *lowlevel_data; /* private data for lowlevel driver */ u8 *raw_image; /* buffer for raw image data */ struct cpia_frame decompressed_frame; /* buffer to hold decompressed frame */ int image_size; /* sizeof last decompressed image */ int open_count; /* # of process that have camera open */ /* camera status */ int fps; /* actual fps reported by the camera */ int transfer_rate; /* transfer rate from camera in kB/s */ u8 mainsFreq; /* for flicker control */ /* proc interface */ struct mutex param_lock; /* params lock for this camera */ struct cam_params params; /* camera settings */ struct proc_dir_entry *proc_entry; /* /proc/cpia/videoX */ /* v4l */ int video_size; /* VIDEO_SIZE_ */ volatile enum v4l_camstates camstate; /* v4l layer status */ struct video_device vdev; /* v4l videodev */ struct video_picture vp; /* v4l camera settings */ struct video_window vw; /* v4l capture area */ struct video_capture vc; /* v4l subcapture area */ /* mmap interface */ int curframe; /* the current frame to grab into */ u8 *frame_buf; /* frame buffer data */ struct cpia_frame frame[FRAME_NUM]; /* FRAME_NUM-buffering, so we need a array */ int first_frame; int mmap_kludge; /* 'wrong' byte order for mmap */ volatile u32 cmd_queue; /* queued commands */ int exposure_status; /* EXPOSURE_* */ int exposure_count; /* number of frames at this status */ }; /* cpia_register_camera is called by low level driver for each camera. * A unique camera number is returned, or a negative value on error */ struct cam_data *cpia_register_camera(struct cpia_camera_ops *ops, void *lowlevel); /* cpia_unregister_camera is called by low level driver when a camera * is removed. This must not fail. */ void cpia_unregister_camera(struct cam_data *cam); /* raw CIF + 64 byte header + (2 bytes line_length + EOL) per line + 4*EOI + * one byte 16bit DMA alignment */ #define CPIA_MAX_IMAGE_SIZE ((352*288*2)+64+(288*3)+5) /* constant value's */ #define MAGIC_0 0x19 #define MAGIC_1 0x68 #define DATA_IN 0xC0 #define DATA_OUT 0x40 #define VIDEOSIZE_QCIF 0 /* 176x144 */ #define VIDEOSIZE_CIF 1 /* 352x288 */ #define VIDEOSIZE_SIF 2 /* 320x240 */ #define VIDEOSIZE_QSIF 3 /* 160x120 */ #define VIDEOSIZE_48_48 4 /* where no one has gone before, iconsize! */ #define VIDEOSIZE_64_48 5 #define VIDEOSIZE_128_96 6 #define VIDEOSIZE_160_120 VIDEOSIZE_QSIF #define VIDEOSIZE_176_144 VIDEOSIZE_QCIF #define VIDEOSIZE_192_144 7 #define VIDEOSIZE_224_168 8 #define VIDEOSIZE_256_192 9 #define VIDEOSIZE_288_216 10 #define VIDEOSIZE_320_240 VIDEOSIZE_SIF #define VIDEOSIZE_352_288 VIDEOSIZE_CIF #define VIDEOSIZE_88_72 11 /* quarter CIF */ #define SUBSAMPLE_420 0 #define SUBSAMPLE_422 1 #define YUVORDER_YUYV 0 #define YUVORDER_UYVY 1 #define NOT_COMPRESSED 0 #define COMPRESSED 1 #define NO_DECIMATION 0 #define DECIMATION_ENAB 1 #define EOI 0xff /* End Of Image */ #define EOL 0xfd /* End Of Line */ #define FRAME_HEADER_SIZE 64 /* Image grab modes */ #define CPIA_GRAB_SINGLE 0 #define CPIA_GRAB_CONTINUOUS 1 /* Compression parameters */ #define CPIA_COMPRESSION_NONE 0 #define CPIA_COMPRESSION_AUTO 1 #define CPIA_COMPRESSION_MANUAL 2 #define CPIA_COMPRESSION_TARGET_QUALITY 0 #define CPIA_COMPRESSION_TARGET_FRAMERATE 1 /* Return offsets for GetCameraState */ #define SYSTEMSTATE 0 #define GRABSTATE 1 #define STREAMSTATE 2 #define FATALERROR 3 #define CMDERROR 4 #define DEBUGFLAGS 5 #define VPSTATUS 6 #define ERRORCODE 7 /* SystemState */ #define UNINITIALISED_STATE 0 #define PASS_THROUGH_STATE 1 #define LO_POWER_STATE 2 #define HI_POWER_STATE 3 #define WARM_BOOT_STATE 4 /* GrabState */ #define GRAB_IDLE 0 #define GRAB_ACTIVE 1 #define GRAB_DONE 2 /* StreamState */ #define STREAM_NOT_READY 0 #define STREAM_READY 1 #define STREAM_OPEN 2 #define STREAM_PAUSED 3 #define STREAM_FINISHED 4 /* Fatal Error, CmdError, and DebugFlags */ #define CPIA_FLAG 1 #define SYSTEM_FLAG 2 #define INT_CTRL_FLAG 4 #define PROCESS_FLAG 8 #define COM_FLAG 16 #define VP_CTRL_FLAG 32 #define CAPTURE_FLAG 64 #define DEBUG_FLAG 128 /* VPStatus */ #define VP_STATE_OK 0x00 #define VP_STATE_FAILED_VIDEOINIT 0x01 #define VP_STATE_FAILED_AECACBINIT 0x02 #define VP_STATE_AEC_MAX 0x04 #define VP_STATE_ACB_BMAX 0x08 #define VP_STATE_ACB_RMIN 0x10 #define VP_STATE_ACB_GMIN 0x20 #define VP_STATE_ACB_RMAX 0x40 #define VP_STATE_ACB_GMAX 0x80 /* default (minimum) compensation values */ #define COMP_RED 220 #define COMP_GREEN1 214 #define COMP_GREEN2 COMP_GREEN1 #define COMP_BLUE 230 /* exposure status */ #define EXPOSURE_VERY_LIGHT 0 #define EXPOSURE_LIGHT 1 #define EXPOSURE_NORMAL 2 #define EXPOSURE_DARK 3 #define EXPOSURE_VERY_DARK 4 /* ErrorCode */ #define ERROR_FLICKER_BELOW_MIN_EXP 0x01 /*flicker exposure got below minimum exposure */ #define ALOG(fmt,args...) printk(fmt, ##args) #define LOG(fmt,args...) ALOG(KERN_INFO __FILE__ ":%s(%d):" fmt, __func__ , __LINE__ , ##args) #ifdef _CPIA_DEBUG_ #define ADBG(fmt,args...) printk(fmt, jiffies, ##args) #define DBG(fmt,args...) ADBG(KERN_DEBUG __FILE__" (%ld):%s(%d):" fmt, __func__, __LINE__ , ##args) #else #define DBG(fmn,args...) do {} while(0) #endif #define DEB_BYTE(p)\ DBG("%1d %1d %1d %1d %1d %1d %1d %1d \n",\ (p)&0x80?1:0, (p)&0x40?1:0, (p)&0x20?1:0, (p)&0x10?1:0,\ (p)&0x08?1:0, (p)&0x04?1:0, (p)&0x02?1:0, (p)&0x01?1:0); #endif /* __KERNEL__ */ #endif /* cpia_h */