v4l2driver.h

Go to the documentation of this file.

#if 0
V4L2 INDI Driver
INDI Interface for V4L2 devices
Copyright (C) 2003 - 2005 Jasem Mutlaq (mutlaqja@ikarustech.com)
    Copyright (C) 2013 Geehalel (geehalel@gmail.com)
 
    This library is free software;
you can redistribute it and / or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation;
either
version 2.1 of the License, or (at your option) any later version.
 
This library 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
Lesser General Public License for more details.
 
You should have received a copy of the GNU Lesser General Public
License along with this library;
if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110 - 1301  USA
 
#endif
 
#pragma once
 
#include "indiccd.h"
#include "webcam/v4l2_base.h"
 
#define IMAGE_CONTROL  "Image Control"
#define IMAGE_GROUP    "V4L2 Control"
#define IMAGE_BOOLEAN  "V4L2 Options"
#define CAPTURE_FORMAT "Capture Options"
 
#define MAX_PIXELS 4096 /* Max number of pixels in one dimension */
#define ERRMSGSIZ  1024
 
#define TEMPFILE_LEN 16
 
#ifdef __FreeBSD__
typedef unsigned long ulong;
#endif
 
class Lx;
 
class V4L2_Driver : public INDI::CCD
{
public:
    V4L2_Driver();
        explicit V4L2_Driver(std::string label, std::string path);
        virtual ~V4L2_Driver() override;
 
        /* INDI Functions that must be called from indidrivermain */
        virtual void ISGetProperties(const char *dev) override;
        virtual bool ISNewSwitch(const char *dev, const char *name, ISState *states, char *names[], int n) override;
        virtual bool ISNewText(const char *dev, const char *name, char *texts[], char *names[], int n) override;
        virtual bool ISNewNumber(const char *dev, const char *name, double values[], char *names[], int n) override;
 
        virtual bool initProperties() override;
        virtual bool updateProperties() override;
        virtual void initCamBase();
 
        static void newFrame(void *p);
        void stackFrame();
        void newFrame();
 
    protected:
        virtual bool Connect() override;
        virtual bool Disconnect() override;
 
        virtual const char *getDefaultName() override;
        virtual bool StartExposure(float duration) override;
        virtual bool AbortExposure() override;
        virtual bool UpdateCCDFrame(int x, int y, int w, int h) override;
        virtual bool UpdateCCDBin(int hor, int ver) override;
        virtual bool SetCaptureFormat(uint8_t index) override;
        virtual bool saveConfigItems(FILE *fp) override;
 
        virtual bool StartStreaming() override;
        virtual bool StopStreaming() override;
 
        /* Structs */
        typedef struct
        {
            int width;
            int height;
            int bpp;
            //int  expose;
            double expose;
            unsigned char *Y;
            unsigned char *U;
            unsigned char *V;
            unsigned char *RGB24Buffer;
            unsigned char *compressedFrame;
            float *stackedFrame;
            float *darkFrame;
        } img_t;
 
        enum
        {
            IMAGE_MONO = 0,
            IMAGE_RGB
        };
 
        enum stackmodes
        {
            STACK_NONE       = 0,
            STACK_MEAN       = 1,
            STACK_ADDITIVE   = 2,
            STACK_TAKE_DARK  = 3,
            STACK_RESET_DARK = 4
        };
 
        /* Switches */
 
        ISwitch ImageDepthS[2];
        ISwitch StackModeS[5];
        ISwitch ColorProcessingS[3];
 
        /* Texts */
        IText PortT[1] {};
        IText camNameT[1] {};
        IText CaptureColorSpaceT[3] {};
 
        /* Numbers */
        //INumber *ExposeTimeN;
        INumber *FrameN;
        INumber FrameRateN[1];
 
        /* Switch vectors */
        ISwitchVectorProperty ImageDepthSP;     /* 8 bits or 16 bits switch */
        ISwitchVectorProperty StackModeSP;      /* StackMode switch */
        ISwitchVectorProperty InputsSP;         /* Select input switch */
        ISwitchVectorProperty CaptureFormatsSP; /* Select Capture format switch */
        ISwitchVectorProperty CaptureSizesSP;   /* Select Capture size switch (Discrete)*/
        ISwitchVectorProperty FrameRatesSP;     /* Select Frame rate (Discrete) */
        ISwitchVectorProperty *Options;
        ISwitchVectorProperty ColorProcessingSP;
 
        unsigned int v4loptions;
        unsigned int v4ladjustments;
        bool useExtCtrl;
 
        /* Number vectors */
        //INumberVectorProperty *ExposeTimeNP;                  /* Exposure */
        INumberVectorProperty CaptureSizesNP; /* Select Capture size switch (Step/Continuous)*/
        INumberVectorProperty FrameRateNP;    /* Frame rate (Step/Continuous) */
        INumberVectorProperty ImageAdjustNP;  /* Image controls */
 
        /* Text vectors */
        ITextVectorProperty PortTP;
        ITextVectorProperty camNameTP;
        ITextVectorProperty CaptureColorSpaceTP;
 
        /* Pointers to optional properties */
        INumber *AbsExposureN;
        ISwitchVectorProperty *ManualExposureSP;
 
        /* Initilization functions */
        //virtual void connectCamera();
        virtual void getBasicData();
        bool getPixelFormat(uint32_t v4l2format, INDI_PIXEL_FORMAT &pixelFormat, uint8_t &pixelDepth);
        void allocateBuffers();
        void releaseBuffers();
        void updateFrameSize();
 
        /* Shutter control */
        bool setShutter(double duration);
        bool setManualExposure(double duration);
        bool startlongexposure(double timeinsec);
        static void lxtimerCallback(void *userpointer);
        static void stdtimerCallback(void *userpointer);
 
        /* start/stop functions */
        bool start_capturing(bool do_stream);
        bool stop_capturing();
 
        virtual void updateV4L2Controls();
 
        /* Variables */
        INDI::V4L2_Base *v4l_base;
 
        char device_name[MAXINDIDEVICE];
 
        int subframeCount; /* For stacking */
        int frameCount;
        double divider;  /* For limits */
        img_t *V4LFrame; /* Video frame */
 
        struct timeval capture_start; /* To calculate how long a frame take */
 
        //struct timeval capture_end;
 
        struct timeval frame_duration;
        struct timeval frame_received;
 
        struct timeval exposure_duration;
        struct timeval elapsed_exposure;
 
        struct timeval getElapsedExposure() const;
        float getRemainingExposure() const;
 
        unsigned int stackMode;
        ulong frameBytes;
        unsigned int non_capture_frames;
        bool v4l_capture_started;
        bool is_capturing;
        bool is_exposing;
 
        //Long Exposure
        Lx *lx;
        int lxtimer;
        int stdtimer;
 
        short lxstate;
 
        char defaultVideoPort[256] = {"/dev/video0"};
        char configPort[256] = {0};
};