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tdeedu/kstars/kstars/indi/v4ldriver.cpp

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#if 0
V4L INDI Driver
INDI Interface for V4L devices
Copyright (C) 2003-2005 Jasem Mutlaq (mutlaqja@ikarustech.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
#include "v4ldriver.h"
V4L_Driver::V4L_Driver()
{
V4LFrame = (img_t *) malloc (sizeof(img_t));
if (V4LFrame == NULL)
{
IDMessage(NULL, "Error: unable to initialize driver. Low memory.");
IDLog("Error: unable to initialize driver. Low memory.");
return;
}
camNameT[0].text = NULL;
PortT[0].text = NULL;
IUSaveText(&PortT[0], "/dev/video0");
divider = 128.;
}
V4L_Driver::~V4L_Driver()
{
free (V4LFrame);
}
void V4L_Driver::initProperties(const char *dev)
{
strncpy(device_name, dev, MAXINDIDEVICE);
/* Connection */
fillSwitch(&PowerS[0], "CONNECT", "Connect", ISS_OFF);
fillSwitch(&PowerS[1], "DISCONNECT", "Disconnect", ISS_ON);
fillSwitchVector(&PowerSP, PowerS, NARRAY(PowerS), dev, "CONNECTION", "Connection", COMM_GROUP, IP_RW, ISR_1OFMANY, 60, IPS_IDLE);
/* Port */
fillText(&PortT[0], "PORT", "Port", "/dev/ttyS0");
fillTextVector(&PortTP, PortT, NARRAY(PortT), dev, "DEVICE_PORT", "Ports", COMM_GROUP, IP_RW, 0, IPS_IDLE);
/* Video Stream */
fillSwitch(&StreamS[0], "ON", "", ISS_OFF);
fillSwitch(&StreamS[1], "OFF", "", ISS_ON);
fillSwitchVector(&StreamSP, StreamS, NARRAY(StreamS), dev, "VIDEO_STREAM", "Video Stream", COMM_GROUP, IP_RW, ISR_1OFMANY, 0, IPS_IDLE);
/* Compression */
fillSwitch(&CompressS[0], "ON", "", ISS_ON);
fillSwitch(&CompressS[1], "OFF", "", ISS_OFF);
fillSwitchVector(&CompressSP, CompressS, NARRAY(StreamS), dev, "Compression", "", IMAGE_GROUP, IP_RW, ISR_1OFMANY, 0, IPS_IDLE);
/* Image type */
fillSwitch(&ImageTypeS[0], "Grey", "", ISS_ON);
fillSwitch(&ImageTypeS[1], "Color", "", ISS_OFF);
fillSwitchVector(&ImageTypeSP, ImageTypeS, NARRAY(ImageTypeS), dev, "Image Type", "", IMAGE_GROUP, IP_RW, ISR_1OFMANY, 0, IPS_IDLE);
/* Camera Name */
fillText(&camNameT[0], "Model", "", "");
fillTextVector(&camNameTP, camNameT, NARRAY(camNameT), dev, "Camera Model", "", COMM_GROUP, IP_RO, 0, IPS_IDLE);
/* Expose */
fillNumber(&ExposeTimeN[0], "EXPOSE_DURATION", "Duration (s)", "%5.2f", 0., 36000., 0.5, 1.);
fillNumberVector(&ExposeTimeNP, ExposeTimeN, NARRAY(ExposeTimeN), dev, "CCD_EXPOSE_DURATION", "Expose", COMM_GROUP, IP_RW, 60, IPS_IDLE);
/* Frame Rate */
fillNumber(&FrameRateN[0], "RATE", "Rate", "%0.f", 1., 50., 1., 10.);
fillNumberVector(&FrameRateNP, FrameRateN, NARRAY(FrameRateN), dev, "FRAME_RATE", "Frame Rate", COMM_GROUP, IP_RW, 60, IPS_IDLE);
/* Frame dimension */
fillNumber(&FrameN[0], "X", "X", "%.0f", 0., 0., 0., 0.);
fillNumber(&FrameN[1], "Y", "Y", "%.0f", 0., 0., 0., 0.);
fillNumber(&FrameN[2], "WIDTH", "Width", "%.0f", 0., 0., 10., 0.);
fillNumber(&FrameN[3], "HEIGHT", "Height", "%.0f", 0., 0., 10., 0.);
fillNumberVector(&FrameNP, FrameN, NARRAY(FrameN), dev, "CCD_FRAME", "Frame", IMAGE_GROUP, IP_RW, 60, IPS_IDLE);
/*fillNumber(&ImageSizeN[0], "WIDTH", "Width", "%0.f", 0., 0., 10., 0.);
fillNumber(&ImageSizeN[1], "HEIGHT", "Height", "%0.f", 0., 0., 10., 0.);
fillNumberVector(&ImageSizeNP, ImageSizeN, NARRAY(ImageSizeN), dev, "IMAGE_SIZE", "Image Size", IMAGE_GROUP, IP_RW, 60, IPS_IDLE);*/
#ifndef HAVE_LINUX_VIDEODEV2_H
fillNumber(&ImageAdjustN[0], "Contrast", "", "%0.f", 0., 256., 1., 0.);
fillNumber(&ImageAdjustN[1], "Brightness", "", "%0.f", 0., 256., 1., 0.);
fillNumber(&ImageAdjustN[2], "Hue", "", "%0.f", 0., 256., 1., 0.);
fillNumber(&ImageAdjustN[3], "Color", "", "%0.f", 0., 256., 1., 0.);
fillNumber(&ImageAdjustN[4], "Whiteness", "", "%0.f", 0., 256., 1., 0.);
fillNumberVector(&ImageAdjustNP, ImageAdjustN, NARRAY(ImageAdjustN), dev, "Image Adjustments", "", IMAGE_GROUP, IP_RW, 60, IPS_IDLE);
#else
fillNumberVector(&ImageAdjustNP, NULL, 0, dev, "Image Adjustments", "", IMAGE_GROUP, IP_RW, 60, IPS_IDLE);
#endif
// We need to setup the BLOB (Binary Large Object) below. Using this property, we can send FITS to our client
strcpy(imageB.name, "CCD1");
strcpy(imageB.label, "Feed");
strcpy(imageB.format, "");
imageB.blob = 0;
imageB.bloblen = 0;
imageB.size = 0;
imageB.bvp = 0;
imageB.aux0 = 0;
imageB.aux1 = 0;
imageB.aux2 = 0;
strcpy(imageBP.device, dev);
strcpy(imageBP.name, "Video");
strcpy(imageBP.label, "Video");
strcpy(imageBP.group, COMM_GROUP);
strcpy(imageBP.timestamp, "");
imageBP.p = IP_RO;
imageBP.timeout = 0;
imageBP.s = IPS_IDLE;
imageBP.bp = &imageB;
imageBP.nbp = 1;
imageBP.aux = 0;
}
void V4L_Driver::initCamBase()
{
#ifndef HAVE_LINUX_VIDEODEV2_H
v4l_base = new V4L1_Base();
#else
v4l_base = new V4L2_Base();
#endif
}
void V4L_Driver::ISGetProperties (const char *dev)
{
if (dev && strcmp (device_name, dev))
return;
/* COMM_GROUP */
IDDefSwitch(&PowerSP, NULL);
IDDefText(&PortTP, NULL);
IDDefText(&camNameTP, NULL);
IDDefSwitch(&StreamSP, NULL);
#ifndef HAVE_LINUX_VIDEODEV2_H
IDDefNumber(&FrameRateNP, NULL);
#endif
IDDefNumber(&ExposeTimeNP, NULL);
IDDefBLOB(&imageBP, NULL);
/* Image properties */
IDDefSwitch(&CompressSP, NULL);
IDDefSwitch(&ImageTypeSP, NULL);
IDDefNumber(&FrameNP, NULL);
#ifndef HAVE_LINUX_VIDEODEV2_H
IDDefNumber(&ImageAdjustNP, NULL);
#endif
}
void V4L_Driver::ISNewSwitch (const char *dev, const char *name, ISState *states, char *names[], int n)
{
char errmsg[ERRMSGSIZ];
/* ignore if not ours */
if (dev && strcmp (device_name, dev))
return;
/* Connection */
if (!strcmp (name, PowerSP.name))
{
IUResetSwitches(&PowerSP);
IUUpdateSwitches(&PowerSP, states, names, n);
connectCamera();
return;
}
/* Compression */
if (!strcmp(name, CompressSP.name))
{
IUResetSwitches(&CompressSP);
IUUpdateSwitches(&CompressSP, states, names, n);
CompressSP.s = IPS_OK;
IDSetSwitch(&CompressSP, NULL);
return;
}
/* Image Type */
if (!strcmp(name, ImageTypeSP.name))
{
IUResetSwitches(&ImageTypeSP);
IUUpdateSwitches(&ImageTypeSP, states, names, n);
ImageTypeSP.s = IPS_OK;
IDSetSwitch(&ImageTypeSP, NULL);
return;
}
/* Video Stream */
if (!strcmp(name, StreamSP.name))
{
if (checkPowerS(&StreamSP))
return;
IUResetSwitches(&StreamSP);
IUUpdateSwitches(&StreamSP, states, names, n);
StreamSP.s = IPS_IDLE;
if (StreamS[0].s == ISS_ON)
{
frameCount = 0;
IDLog("Starting the video stream.\n");
v4l_base->start_capturing(errmsg);
StreamSP.s = IPS_BUSY;
}
else
{
IDLog("The video stream has been disabled. Frame count %d\n", frameCount);
v4l_base->stop_capturing(errmsg);
}
IDSetSwitch(&StreamSP, NULL);
return;
}
}
void V4L_Driver::ISNewText (const char *dev, const char *name, char *texts[], char *names[], int /*n*/)
{
IText *tp;
/* ignore if not ours */
if (dev && strcmp (device_name, dev))
return;
if (!strcmp(name, PortTP.name) )
{
PortTP.s = IPS_OK;
tp = IUFindText( &PortTP, names[0] );
if (!tp)
return;
IUSaveText(tp, texts[0]);
IDSetText (&PortTP, NULL);
return;
}
}
void V4L_Driver::ISNewNumber (const char *dev, const char *name, double values[], char *names[], int n)
{
char errmsg[ERRMSGSIZ];
/* ignore if not ours */
if (dev && strcmp (device_name, dev))
return;
/* Frame Size */
if (!strcmp (FrameNP.name, name))
{
if (checkPowerN(&FrameNP))
return;
int oldW = (int) FrameN[2].value;
int oldH = (int) FrameN[3].value;
FrameNP.s = IPS_OK;
if (IUUpdateNumbers(&FrameNP, values, names, n) < 0)
return;
if (v4l_base->setSize( (int) FrameN[2].value, (int) FrameN[3].value) != -1)
{
FrameN[2].value = v4l_base->getWidth();
FrameN[3].value = v4l_base->getHeight();
IDSetNumber(&FrameNP, NULL);
return;
}
else
{
FrameN[2].value = oldW;
FrameN[3].value = oldH;
FrameNP.s = IPS_ALERT;
IDSetNumber(&FrameNP, "Failed to set a new image size.");
}
return;
}
#ifndef HAVE_LINUX_VIDEODEV2_H
/* Frame rate */
if (!strcmp (FrameRateNP.name, name))
{
if (checkPowerN(&FrameRateNP))
return;
FrameRateNP.s = IPS_IDLE;
if (IUUpdateNumbers(&FrameRateNP, values, names, n) < 0)
return;
v4l_base->setFPS( (int) FrameRateN[0].value );
FrameRateNP.s = IPS_OK;
IDSetNumber(&FrameRateNP, NULL);
return;
}
#endif
if (!strcmp (ImageAdjustNP.name, name))
{
if (checkPowerN(&ImageAdjustNP))
return;
ImageAdjustNP.s = IPS_IDLE;
if (IUUpdateNumbers(&ImageAdjustNP, values, names, n) < 0)
return;
#ifndef HAVE_LINUX_VIDEODEV2_H
v4l_base->setContrast( (int) (ImageAdjustN[0].value * divider));
v4l_base->setBrightness( (int) (ImageAdjustN[1].value * divider));
v4l_base->setHue( (int) (ImageAdjustN[2].value * divider));
v4l_base->setColor( (int) (ImageAdjustN[3].value * divider));
v4l_base->setWhiteness( (int) (ImageAdjustN[4].value * divider));
ImageAdjustN[0].value = v4l_base->getContrast() / divider;
ImageAdjustN[1].value = v4l_base->getBrightness() / divider;
ImageAdjustN[2].value = v4l_base->getHue() / divider;
ImageAdjustN[3].value = v4l_base->getColor() / divider;
ImageAdjustN[4].value = v4l_base->getWhiteness() / divider;
#else
unsigned int ctrl_id;
for (int i=0; i < ImageAdjustNP.nnp; i++)
{
ctrl_id = *((unsigned int *) ImageAdjustNP.np[i].aux0);
if (v4l_base->setINTControl( ctrl_id , ImageAdjustNP.np[i].value, errmsg) < 0)
{
ImageAdjustNP.s = IPS_ALERT;
IDSetNumber(&ImageAdjustNP, "Unable to adjust setting. %s", errmsg);
return;
}
}
#endif
ImageAdjustNP.s = IPS_OK;
IDSetNumber(&ImageAdjustNP, NULL);
return;
}
/* Exposure */
if (!strcmp (ExposeTimeNP.name, name))
{
if (checkPowerN(&ExposeTimeNP))
return;
if (StreamS[0].s == ISS_ON)
v4l_base->stop_capturing(errmsg);
StreamS[0].s = ISS_OFF;
StreamS[1].s = ISS_ON;
StreamSP.s = IPS_IDLE;
IDSetSwitch(&StreamSP, NULL);
V4LFrame->expose = 1000;
v4l_base->start_capturing(errmsg);
ExposeTimeNP.s = IPS_BUSY;
IDSetNumber(&ExposeTimeNP, NULL);
return;
}
}
void V4L_Driver::newFrame(void *p)
{
((V4L_Driver *) (p))->updateFrame();
}
void V4L_Driver::updateFrame()
{
char errmsg[ERRMSGSIZ];
static int dropLarge = 3;
if (StreamSP.s == IPS_BUSY)
{
frameCount++;
// Drop some frames
if (FrameN[2].value > 160)
{
dropLarge--;
if (dropLarge == 0)
{
dropLarge = 3;
return;
}
else if (dropLarge < 2) return;
}
updateStream();
}
else if (ExposeTimeNP.s == IPS_BUSY)
{
V4LFrame->Y = v4l_base->getY();
v4l_base->stop_capturing(errmsg);
grabImage();
}
}
void V4L_Driver::updateStream()
{
int width = v4l_base->getWidth();
int height = v4l_base->getHeight();
uLongf compressedBytes = 0;
uLong totalBytes;
unsigned char *targetFrame;
int r;
if (PowerS[0].s == ISS_OFF || StreamS[0].s == ISS_OFF) return;
if (ImageTypeS[0].s == ISS_ON)
V4LFrame->Y = v4l_base->getY();
else
V4LFrame->colorBuffer = v4l_base->getColorBuffer();
totalBytes = ImageTypeS[0].s == ISS_ON ? width * height : width * height * 4;
targetFrame = ImageTypeS[0].s == ISS_ON ? V4LFrame->Y : V4LFrame->colorBuffer;
/* Do we want to compress ? */
if (CompressS[0].s == ISS_ON)
{
/* Compress frame */
V4LFrame->compressedFrame = (unsigned char *) realloc (V4LFrame->compressedFrame, sizeof(unsigned char) * totalBytes + totalBytes / 64 + 16 + 3);
compressedBytes = sizeof(unsigned char) * totalBytes + totalBytes / 64 + 16 + 3;
r = compress2(V4LFrame->compressedFrame, &compressedBytes, targetFrame, totalBytes, 4);
if (r != Z_OK)
{
/* this should NEVER happen */
IDLog("internal error - compression failed: %d\n", r);
return;
}
/* #3.A Send it compressed */
imageB.blob = V4LFrame->compressedFrame;
imageB.bloblen = compressedBytes;
imageB.size = totalBytes;
strcpy(imageB.format, ".stream.z");
}
else
{
/* #3.B Send it uncompressed */
imageB.blob = targetFrame;
imageB.bloblen = totalBytes;
imageB.size = totalBytes;
strcpy(imageB.format, ".stream");
}
imageBP.s = IPS_OK;
IDSetBLOB (&imageBP, NULL);
#ifndef HAVE_LINUX_VIDEODEV2_H
char errmsg[ERRMSGSIZ];
v4l_base->start_capturing(errmsg);
#endif
}
/* Downloads the image from the CCD row by row and store them
in a raw file.
N.B. No processing is done on the image */
int V4L_Driver::grabImage()
{
int err, fd;
char errmsg[ERRMSG_SIZE];
char filename[] = "/tmp/fitsXXXXXX";
if ((fd = mkstemp(filename)) < 0)
{
IDMessage(device_name, "Error making temporary filename.");
IDLog("Error making temporary filename.\n");
return -1;
}
close(fd);
err = writeFITS(filename, errmsg);
if (err)
{
IDMessage(device_name, errmsg, NULL);
return -1;
}
return 0;
}
int V4L_Driver::writeFITS(const char * filename, char errmsg[])
{
FITS_FILE* ofp;
int i, bpp, bpsl, width, height;
long nbytes;
FITS_HDU_LIST *hdu;
ofp = fits_open (filename, "w");
if (!ofp)
{
snprintf(errmsg, ERRMSG_SIZE, "Error: cannot open file for writing.");
return (-1);
}
width = v4l_base->getWidth();
height = v4l_base->getHeight();
bpp = 1; /* Bytes per Pixel */
bpsl = bpp * width; /* Bytes per Line */
nbytes = 0;
hdu = create_fits_header (ofp, width, height, bpp);
if (hdu == NULL)
{
snprintf(errmsg, ERRMSG_SIZE, "Error: creating FITS header failed.");
return (-1);
}
if (fits_write_header (ofp, hdu) < 0)
{
snprintf(errmsg, ERRMSG_SIZE, "Error: writing to FITS header failed.");
return (-1);
}
for (i= height - 1; i >=0 ; i--)
{
fwrite(V4LFrame->Y + (i * width), 1, width, ofp->fp);
nbytes += bpsl;
}
nbytes = nbytes % FITS_RECORD_SIZE;
if (nbytes)
{
while (nbytes++ < FITS_RECORD_SIZE)
putc (0, ofp->fp);
}
if (ferror (ofp->fp))
{
snprintf(errmsg, ERRMSG_SIZE, "Error: write error occured");
return (-1);
}
fits_close (ofp);
/* Success */
ExposeTimeNP.s = IPS_OK;
IDSetNumber(&ExposeTimeNP, NULL);
uploadFile(filename);
return 0;
}
void V4L_Driver::uploadFile(const char * filename)
{
FILE * fitsFile;
unsigned char *fitsData;
int r=0;
unsigned int nr = 0;
uLong totalBytes;
uLongf compressedBytes = 0;
struct stat stat_p;
if ( -1 == stat (filename, &stat_p))
{
IDLog(" Error occoured attempting to stat %s\n", filename);
return;
}
totalBytes = stat_p.st_size;
fitsData = new unsigned char[totalBytes];
fitsFile = fopen(filename, "r");
if (fitsFile == NULL)
return;
/* #1 Read file from disk */
for (unsigned int i=0; i < totalBytes; i+= nr)
{
nr = fread(fitsData + i, 1, totalBytes - i, fitsFile);
if (nr <= 0)
{
IDLog("Error reading temporary FITS file.\n");
return;
}
}
if (CompressS[0].s == ISS_ON)
{
/* #2 Compress it */
V4LFrame->compressedFrame = (unsigned char *) realloc (V4LFrame->compressedFrame, sizeof(unsigned char) * totalBytes + totalBytes / 64 + 16 + 3);
compressedBytes = sizeof(unsigned char) * totalBytes + totalBytes / 64 + 16 + 3;
r = compress2(V4LFrame->compressedFrame, &compressedBytes, fitsData, totalBytes, 9);
if (r != Z_OK)
{
/* this should NEVER happen */
IDLog("internal error - compression failed: %d\n", r);
return;
}
/* #3.A Send it compressed */
imageB.blob = V4LFrame->compressedFrame;
imageB.bloblen = compressedBytes;
imageB.size = totalBytes;
strcpy(imageB.format, ".fits.z");
}
else
{
imageB.blob = fitsData;
imageB.bloblen = totalBytes;
imageB.size = totalBytes;
strcpy(imageB.format, ".fits");
}
imageBP.s = IPS_OK;
IDSetBLOB (&imageBP, NULL);
delete (fitsData);
}
void V4L_Driver::connectCamera()
{
char errmsg[ERRMSGSIZ];
switch (PowerS[0].s)
{
case ISS_ON:
if (v4l_base->connectCam(PortT[0].text, errmsg) < 0)
{
PowerSP.s = IPS_IDLE;
PowerS[0].s = ISS_OFF;
PowerS[1].s = ISS_ON;
IDSetSwitch(&PowerSP, "Error: unable to open device");
IDLog("Error: %s\n", errmsg);
return;
}
/* Sucess! */
PowerS[0].s = ISS_ON;
PowerS[1].s = ISS_OFF;
PowerSP.s = IPS_OK;
IDSetSwitch(&PowerSP, "Video4Linux Generic Device is online. Retrieving basic data.");
v4l_base->registerCallback(newFrame, this);
V4LFrame->compressedFrame = (unsigned char *) malloc (sizeof(unsigned char) * 1);
IDLog("V4L Device is online. Retrieving basic data.\n");
getBasicData();
break;
case ISS_OFF:
PowerS[0].s = ISS_OFF;
PowerS[1].s = ISS_ON;
PowerSP.s = IPS_IDLE;
free(V4LFrame->compressedFrame);
V4LFrame->compressedFrame = NULL;
v4l_base->disconnectCam();
IDSetSwitch(&PowerSP, "Video4Linux Generic Device is offline.");
break;
}
}
/* Retrieves basic data from the device upon connection.*/
void V4L_Driver::getBasicData()
{
int xmax, ymax, xmin, ymin;
v4l_base->getMaxMinSize(xmax, ymax, xmin, ymin);
/* Width */
FrameN[2].value = v4l_base->getWidth();
FrameN[2].min = xmin;
FrameN[2].max = xmax;
/* Height */
FrameN[3].value = v4l_base->getHeight();
FrameN[3].min = ymin;
FrameN[3].max = ymax;
IUUpdateMinMax(&FrameNP);
IDSetNumber(&FrameNP, NULL);
IUSaveText(&camNameT[0], v4l_base->getDeviceName());
IDSetText(&camNameTP, NULL);
#ifndef HAVE_LINUX_VIDEODEV2_H
updateV4L1Controls();
#else
updateV4L2Controls();
#endif
}
#ifdef HAVE_LINUX_VIDEODEV2_H
void V4L_Driver::updateV4L2Controls()
{
// #1 Query for INTEGER controls, and fill up the structure
free(ImageAdjustNP.np);
ImageAdjustNP.nnp = 0;
if (v4l_base->queryINTControls(&ImageAdjustNP) > 0)
IDDefNumber(&ImageAdjustNP, NULL);
}
#else
void V4L_Driver::updateV4L1Controls()
{
if ( (v4l_base->getContrast() / divider) > ImageAdjustN[0].max)
divider *=2;
if ( (v4l_base->getHue() / divider) > ImageAdjustN[2].max)
divider *=2;
ImageAdjustN[0].value = v4l_base->getContrast() / divider;
ImageAdjustN[1].value = v4l_base->getBrightness() / divider;
ImageAdjustN[2].value = v4l_base->getHue() / divider;
ImageAdjustN[3].value = v4l_base->getColor() / divider;
ImageAdjustN[4].value = v4l_base->getWhiteness() / divider;
ImageAdjustNP.s = IPS_OK;
IDSetNumber(&ImageAdjustNP, NULL);
}
#endif
int V4L_Driver::checkPowerS(ISwitchVectorProperty *sp)
{
if (PowerSP.s != IPS_OK)
{
if (!strcmp(sp->label, ""))
IDMessage (device_name, "Cannot change property %s while the camera is offline.", sp->name);
else
IDMessage (device_name, "Cannot change property %s while the camera is offline.", sp->label);
sp->s = IPS_IDLE;
IDSetSwitch(sp, NULL);
return -1;
}
return 0;
}
int V4L_Driver::checkPowerN(INumberVectorProperty *np)
{
if (PowerSP.s != IPS_OK)
{
if (!strcmp(np->label, ""))
IDMessage (device_name, "Cannot change property %s while the camera is offline.", np->name);
else
IDMessage (device_name, "Cannot change property %s while the camera is offline.", np->label);
np->s = IPS_IDLE;
IDSetNumber(np, NULL);
return -1;
}
return 0;
}
int V4L_Driver::checkPowerT(ITextVectorProperty *tp)
{
if (PowerSP.s != IPS_OK)
{
if (!strcmp(tp->label, ""))
IDMessage (device_name, "Cannot change property %s while the camera is offline.", tp->name);
else
IDMessage (device_name, "Cannot change property %s while the camera is offline.", tp->label);
tp->s = IPS_IDLE;
IDSetText(tp, NULL);
return -1;
}
return 0;
}
FITS_HDU_LIST * V4L_Driver::create_fits_header (FITS_FILE *ofp, uint width, uint height, uint bpp)
{
FITS_HDU_LIST *hdulist;
char expose_s[80];
char obsDate[80];
char instrumentName[80];
char ts[32];
struct tm *tp;
time_t t;
time (&t);
tp = gmtime (&t);
strftime (ts, sizeof(ts), "%Y-%m-%dT%H:%M:%S", tp);
snprintf(instrumentName, 80, "INSTRUME= '%s'", v4l_base->getDeviceName());
snprintf(obsDate, 80, "DATE-OBS= '%s' /Observation Date UTC", ts);
hdulist = fits_add_hdu (ofp);
if (hdulist == NULL) return (NULL);
hdulist->used.simple = 1;
hdulist->bitpix = 8;
hdulist->naxis = 2;
hdulist->naxisn[0] = width;
hdulist->naxisn[1] = height;
hdulist->naxisn[2] = bpp;
hdulist->used.datamin = 0;
hdulist->used.datamax = 0;
hdulist->used.bzero = 1;
hdulist->bzero = 0.0;
hdulist->used.bscale = 1;
hdulist->bscale = 1.0;
snprintf(expose_s, sizeof(expose_s), "EXPOSURE= %d / milliseconds", V4LFrame->expose);
fits_add_card (hdulist, expose_s);
fits_add_card (hdulist, instrumentName);
fits_add_card (hdulist, obsDate);
return (hdulist);
}
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