432 lines
12 KiB
C
432 lines
12 KiB
C
#ifndef cpia_h
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#define cpia_h
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/*
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* CPiA Parallel Port Video4Linux driver
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*
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* Supports CPiA based parallel port Video Camera's.
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*
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* (C) Copyright 1999 Bas Huisman,
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* Peter Pregler,
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* Scott J. Bertin,
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* VLSI Vision Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#define CPIA_MAJ_VER 1
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#define CPIA_MIN_VER 2
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#define CPIA_PATCH_VER 3
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#define CPIA_PP_MAJ_VER CPIA_MAJ_VER
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#define CPIA_PP_MIN_VER CPIA_MIN_VER
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#define CPIA_PP_PATCH_VER CPIA_PATCH_VER
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#define CPIA_USB_MAJ_VER CPIA_MAJ_VER
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#define CPIA_USB_MIN_VER CPIA_MIN_VER
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#define CPIA_USB_PATCH_VER CPIA_PATCH_VER
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#define CPIA_MAX_FRAME_SIZE_UNALIGNED (352 * 288 * 4) /* CIF at RGB32 */
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#define CPIA_MAX_FRAME_SIZE ((CPIA_MAX_FRAME_SIZE_UNALIGNED + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1)) /* align above to PAGE_SIZE */
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#ifdef __KERNEL__
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#include <asm/uaccess.h>
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#include <linux/videodev.h>
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#include <media/v4l2-common.h>
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#include <linux/list.h>
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#include <linux/mutex.h>
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struct cpia_camera_ops
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{
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/* open sets privdata to point to structure for this camera.
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* Returns negative value on error, otherwise 0.
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*/
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int (*open)(void *privdata);
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/* Registers callback function cb to be called with cbdata
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* when an image is ready. If cb is NULL, only single image grabs
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* should be used. cb should immediately call streamRead to read
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* the data or data may be lost. Returns negative value on error,
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* otherwise 0.
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*/
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int (*registerCallback)(void *privdata, void (*cb)(void *cbdata),
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void *cbdata);
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/* transferCmd sends commands to the camera. command MUST point to
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* an 8 byte buffer in kernel space. data can be NULL if no extra
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* data is needed. The size of the data is given by the last 2
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* bytes of command. data must also point to memory in kernel space.
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* Returns negative value on error, otherwise 0.
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*/
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int (*transferCmd)(void *privdata, u8 *command, u8 *data);
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/* streamStart initiates stream capture mode.
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* Returns negative value on error, otherwise 0.
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*/
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int (*streamStart)(void *privdata);
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/* streamStop terminates stream capture mode.
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* Returns negative value on error, otherwise 0.
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*/
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int (*streamStop)(void *privdata);
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/* streamRead reads a frame from the camera. buffer points to a
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* buffer large enough to hold a complete frame in kernel space.
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* noblock indicates if this should be a non blocking read.
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* Returns the number of bytes read, or negative value on error.
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*/
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int (*streamRead)(void *privdata, u8 *buffer, int noblock);
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/* close disables the device until open() is called again.
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* Returns negative value on error, otherwise 0.
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*/
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int (*close)(void *privdata);
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/* If wait_for_stream_ready is non-zero, wait until the streamState
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* is STREAM_READY before calling streamRead.
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*/
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int wait_for_stream_ready;
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/*
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* Used to maintain lowlevel module usage counts
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*/
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struct module *owner;
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};
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struct cpia_frame {
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u8 *data;
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int count;
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int width;
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int height;
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volatile int state;
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};
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struct cam_params {
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struct {
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u8 firmwareVersion;
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u8 firmwareRevision;
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u8 vcVersion;
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u8 vcRevision;
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} version;
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struct {
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u16 vendor;
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u16 product;
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u16 deviceRevision;
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} pnpID;
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struct {
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u8 vpVersion;
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u8 vpRevision;
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u16 cameraHeadID;
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} vpVersion;
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struct {
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u8 systemState;
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u8 grabState;
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u8 streamState;
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u8 fatalError;
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u8 cmdError;
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u8 debugFlags;
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u8 vpStatus;
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u8 errorCode;
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} status;
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struct {
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u8 brightness;
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u8 contrast;
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u8 saturation;
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} colourParams;
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struct {
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u8 gainMode;
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u8 expMode;
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u8 compMode;
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u8 centreWeight;
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u8 gain;
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u8 fineExp;
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u8 coarseExpLo;
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u8 coarseExpHi;
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u8 redComp;
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u8 green1Comp;
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u8 green2Comp;
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u8 blueComp;
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} exposure;
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struct {
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u8 balanceMode;
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u8 redGain;
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u8 greenGain;
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u8 blueGain;
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} colourBalance;
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struct {
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u8 divisor;
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u8 baserate;
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} sensorFps;
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struct {
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u8 gain1;
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u8 gain2;
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u8 gain4;
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u8 gain8;
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} apcor;
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struct {
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u8 disabled;
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u8 flickerMode;
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u8 coarseJump;
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int allowableOverExposure;
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} flickerControl;
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struct {
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u8 gain1;
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u8 gain2;
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u8 gain4;
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u8 gain8;
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} vlOffset;
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struct {
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u8 mode;
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u8 decimation;
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} compression;
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struct {
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u8 frTargeting;
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u8 targetFR;
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u8 targetQ;
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} compressionTarget;
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struct {
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u8 yThreshold;
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u8 uvThreshold;
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} yuvThreshold;
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struct {
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u8 hysteresis;
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u8 threshMax;
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u8 smallStep;
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u8 largeStep;
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u8 decimationHysteresis;
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u8 frDiffStepThresh;
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u8 qDiffStepThresh;
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u8 decimationThreshMod;
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} compressionParams;
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struct {
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u8 videoSize; /* CIF/QCIF */
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u8 subSample;
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u8 yuvOrder;
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} format;
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struct { /* Intel QX3 specific data */
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u8 qx3_detected; /* a QX3 is present */
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u8 toplight; /* top light lit , R/W */
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u8 bottomlight; /* bottom light lit, R/W */
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u8 button; /* snapshot button pressed (R/O) */
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u8 cradled; /* microscope is in cradle (R/O) */
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} qx3;
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struct {
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u8 colStart; /* skip first 8*colStart pixels */
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u8 colEnd; /* finish at 8*colEnd pixels */
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u8 rowStart; /* skip first 4*rowStart lines */
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u8 rowEnd; /* finish at 4*rowEnd lines */
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} roi;
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u8 ecpTiming;
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u8 streamStartLine;
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};
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enum v4l_camstates {
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CPIA_V4L_IDLE = 0,
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CPIA_V4L_ERROR,
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CPIA_V4L_COMMAND,
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CPIA_V4L_GRABBING,
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CPIA_V4L_STREAMING,
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CPIA_V4L_STREAMING_PAUSED,
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};
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#define FRAME_NUM 2 /* double buffering for now */
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struct cam_data {
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struct list_head cam_data_list;
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struct mutex busy_lock; /* guard against SMP multithreading */
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struct cpia_camera_ops *ops; /* lowlevel driver operations */
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void *lowlevel_data; /* private data for lowlevel driver */
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u8 *raw_image; /* buffer for raw image data */
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struct cpia_frame decompressed_frame;
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/* buffer to hold decompressed frame */
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int image_size; /* sizeof last decompressed image */
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int open_count; /* # of process that have camera open */
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/* camera status */
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int fps; /* actual fps reported by the camera */
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int transfer_rate; /* transfer rate from camera in kB/s */
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u8 mainsFreq; /* for flicker control */
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/* proc interface */
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struct mutex param_lock; /* params lock for this camera */
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struct cam_params params; /* camera settings */
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struct proc_dir_entry *proc_entry; /* /proc/cpia/videoX */
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/* v4l */
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int video_size; /* VIDEO_SIZE_ */
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volatile enum v4l_camstates camstate; /* v4l layer status */
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struct video_device vdev; /* v4l videodev */
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struct video_picture vp; /* v4l camera settings */
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struct video_window vw; /* v4l capture area */
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struct video_capture vc; /* v4l subcapture area */
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/* mmap interface */
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int curframe; /* the current frame to grab into */
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u8 *frame_buf; /* frame buffer data */
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struct cpia_frame frame[FRAME_NUM];
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/* FRAME_NUM-buffering, so we need a array */
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int first_frame;
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int mmap_kludge; /* 'wrong' byte order for mmap */
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volatile u32 cmd_queue; /* queued commands */
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int exposure_status; /* EXPOSURE_* */
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int exposure_count; /* number of frames at this status */
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};
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/* cpia_register_camera is called by low level driver for each camera.
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* A unique camera number is returned, or a negative value on error */
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struct cam_data *cpia_register_camera(struct cpia_camera_ops *ops, void *lowlevel);
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/* cpia_unregister_camera is called by low level driver when a camera
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* is removed. This must not fail. */
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void cpia_unregister_camera(struct cam_data *cam);
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/* raw CIF + 64 byte header + (2 bytes line_length + EOL) per line + 4*EOI +
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* one byte 16bit DMA alignment
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*/
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#define CPIA_MAX_IMAGE_SIZE ((352*288*2)+64+(288*3)+5)
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/* constant value's */
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#define MAGIC_0 0x19
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#define MAGIC_1 0x68
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#define DATA_IN 0xC0
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#define DATA_OUT 0x40
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#define VIDEOSIZE_QCIF 0 /* 176x144 */
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#define VIDEOSIZE_CIF 1 /* 352x288 */
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#define VIDEOSIZE_SIF 2 /* 320x240 */
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#define VIDEOSIZE_QSIF 3 /* 160x120 */
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#define VIDEOSIZE_48_48 4 /* where no one has gone before, iconsize! */
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#define VIDEOSIZE_64_48 5
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#define VIDEOSIZE_128_96 6
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#define VIDEOSIZE_160_120 VIDEOSIZE_QSIF
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#define VIDEOSIZE_176_144 VIDEOSIZE_QCIF
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#define VIDEOSIZE_192_144 7
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#define VIDEOSIZE_224_168 8
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#define VIDEOSIZE_256_192 9
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#define VIDEOSIZE_288_216 10
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#define VIDEOSIZE_320_240 VIDEOSIZE_SIF
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#define VIDEOSIZE_352_288 VIDEOSIZE_CIF
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#define VIDEOSIZE_88_72 11 /* quarter CIF */
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#define SUBSAMPLE_420 0
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#define SUBSAMPLE_422 1
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#define YUVORDER_YUYV 0
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#define YUVORDER_UYVY 1
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#define NOT_COMPRESSED 0
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#define COMPRESSED 1
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#define NO_DECIMATION 0
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#define DECIMATION_ENAB 1
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#define EOI 0xff /* End Of Image */
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#define EOL 0xfd /* End Of Line */
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#define FRAME_HEADER_SIZE 64
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/* Image grab modes */
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#define CPIA_GRAB_SINGLE 0
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#define CPIA_GRAB_CONTINUOUS 1
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/* Compression parameters */
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#define CPIA_COMPRESSION_NONE 0
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#define CPIA_COMPRESSION_AUTO 1
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#define CPIA_COMPRESSION_MANUAL 2
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#define CPIA_COMPRESSION_TARGET_QUALITY 0
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#define CPIA_COMPRESSION_TARGET_FRAMERATE 1
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/* Return offsets for GetCameraState */
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#define SYSTEMSTATE 0
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#define GRABSTATE 1
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#define STREAMSTATE 2
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#define FATALERROR 3
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#define CMDERROR 4
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#define DEBUGFLAGS 5
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#define VPSTATUS 6
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#define ERRORCODE 7
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/* SystemState */
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#define UNINITIALISED_STATE 0
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#define PASS_THROUGH_STATE 1
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#define LO_POWER_STATE 2
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#define HI_POWER_STATE 3
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#define WARM_BOOT_STATE 4
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/* GrabState */
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#define GRAB_IDLE 0
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#define GRAB_ACTIVE 1
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#define GRAB_DONE 2
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/* StreamState */
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#define STREAM_NOT_READY 0
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#define STREAM_READY 1
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#define STREAM_OPEN 2
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#define STREAM_PAUSED 3
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#define STREAM_FINISHED 4
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/* Fatal Error, CmdError, and DebugFlags */
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#define CPIA_FLAG 1
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#define SYSTEM_FLAG 2
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#define INT_CTRL_FLAG 4
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#define PROCESS_FLAG 8
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#define COM_FLAG 16
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#define VP_CTRL_FLAG 32
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#define CAPTURE_FLAG 64
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#define DEBUG_FLAG 128
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/* VPStatus */
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#define VP_STATE_OK 0x00
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#define VP_STATE_FAILED_VIDEOINIT 0x01
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#define VP_STATE_FAILED_AECACBINIT 0x02
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#define VP_STATE_AEC_MAX 0x04
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#define VP_STATE_ACB_BMAX 0x08
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#define VP_STATE_ACB_RMIN 0x10
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#define VP_STATE_ACB_GMIN 0x20
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#define VP_STATE_ACB_RMAX 0x40
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#define VP_STATE_ACB_GMAX 0x80
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/* default (minimum) compensation values */
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#define COMP_RED 220
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#define COMP_GREEN1 214
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#define COMP_GREEN2 COMP_GREEN1
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#define COMP_BLUE 230
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/* exposure status */
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#define EXPOSURE_VERY_LIGHT 0
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#define EXPOSURE_LIGHT 1
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#define EXPOSURE_NORMAL 2
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#define EXPOSURE_DARK 3
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#define EXPOSURE_VERY_DARK 4
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/* ErrorCode */
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#define ERROR_FLICKER_BELOW_MIN_EXP 0x01 /*flicker exposure got below minimum exposure */
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#define ALOG(fmt,args...) printk(fmt, ##args)
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#define LOG(fmt,args...) ALOG(KERN_INFO __FILE__ ":%s(%d):" fmt, __FUNCTION__ , __LINE__ , ##args)
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#ifdef _CPIA_DEBUG_
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#define ADBG(fmt,args...) printk(fmt, jiffies, ##args)
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#define DBG(fmt,args...) ADBG(KERN_DEBUG __FILE__" (%ld):%s(%d):" fmt, __FUNCTION__, __LINE__ , ##args)
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#else
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#define DBG(fmn,args...) do {} while(0)
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#endif
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#define DEB_BYTE(p)\
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DBG("%1d %1d %1d %1d %1d %1d %1d %1d \n",\
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(p)&0x80?1:0, (p)&0x40?1:0, (p)&0x20?1:0, (p)&0x10?1:0,\
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(p)&0x08?1:0, (p)&0x04?1:0, (p)&0x02?1:0, (p)&0x01?1:0);
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#endif /* __KERNEL__ */
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#endif /* cpia_h */
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