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/***************************************************************************
* cam_features.c
*
* Wed Jul 27 11:25:09 2005
* Copyright 2005 User: Naysawn Naderi
* Email: ndn at xiphos dot ca
* SPDX-License-Identifier: BSD-3-Clause
*
* Uses libdc1394 and libraw1394
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <sys/times.h>
#include <errno.h>
#include <libraw1394/raw1394.h>
#include <libdc1394/dc1394_control.h>
#include <libdc1394/dc1394_register.h>
//EXIF includes
#include <libexif/exif-data.h>
#include <libexif/exif-ifd.h>
#include <libexif/exif-loader.h>
// Part of the exif command-line source package
#include "libjpeg/jpeg-data.h"
#define FILENAME "test.jpg"
static int createEXIF(dc1394featureset_t *xFeatures, ExifData ** pParentEd);
int main(int argc, char *argv[])
{ dc1394camera_t *pCamera, **pCameras=NULL;
int iNumCameras;
dc1394featureset_t xFeatures;
int i;
int err=dc1394_find_cameras(&pCameras, &iNumCameras);
//EXIF STUFF
JPEGData *pData;
//float fOnefloat;
ExifData * pEd;
if (err!=DC1394_SUCCESS) {
fprintf( stderr, "Unable to look for cameras\n\n"
"Please check \n"
" - if the kernel modules `ieee1394',`raw1394' and `ohci1394' are loaded \n"
" - if you have read/write access to /dev/raw1394\n\n");
exit(1);
}
/*-----------------------------------------------------------------------
* Initialize the camera
*-----------------------------------------------------------------------*/
if (iNumCameras<1) {
fprintf(stderr, "no cameras found :(\n");
exit(1);
}
pCamera=pCameras[0];
for (i=1;i<iNumCameras;i++)
dc1394_free_camera(pCameras[i]);
free(pCameras);
if(dc1394_get_camera_feature_set(pCamera, &xFeatures)!=DC1394_SUCCESS)
fprintf(stdout, "unable to get feature set\n");
else
printf("camera's feature set retrieved\n");
createEXIF(&xFeatures, &pEd); //tag the file with the settings of the camera
//exif_data_dump (pEd);
//write the Exif data to a jpeg file
pData = jpeg_data_new_from_file (FILENAME); //input data
if (!pData) {
printf ("Could not load '%s'!\n", FILENAME);
return (-1);
}
printf("Saving EXIF data to jpeg file\n");
jpeg_data_set_exif_data (pData, pEd);
printf("Set the data\n");
jpeg_data_save_file(pData, "foobar2.jpg");
return 0;
}
int createEXIF(dc1394featureset_t *xFeatures, ExifData ** pParentEd)
{
ExifEntry *pE;
ExifData * pEd;
int i = !xFeatures->feature[DC1394_FEATURE_WHITE_BALANCE - DC1394_FEATURE_MIN].auto_active;
ExifSRational xR = {xFeatures->feature[DC1394_FEATURE_BRIGHTNESS - DC1394_FEATURE_MIN].value, xFeatures->feature[DC1394_FEATURE_BRIGHTNESS - DC1394_FEATURE_MIN].max};
printf ("Creating EXIF data...\n");
pEd = exif_data_new ();
/*
Things to tag:
EXIF_TAG_MAKE = 0x010f,
EXIF_TAG_MODEL = 0x0110,
EXIF_TAG_EXPOSURE_TIME = 0x829a,
EXIF_TAG_BRIGHTNESS_VALUE = 0x9203,
EXIF_TAG_WHITE_BALANCE = 0xa403,
EXIF_TAG_GAIN_CONTROL = 0xa407,
EXIF_TAG_CONTRAST = 0xa408,
EXIF_TAG_SATURATION = 0xa409,
EXIF_TAG_SHARPNESS = 0xa40a,
EXIF_TAG_USER_COMMENT
*/
printf ("Adding a Make reference\n");
pE = exif_entry_new ();
exif_content_add_entry (pEd->ifd[EXIF_IFD_0], pE);
exif_entry_initialize (pE, EXIF_TAG_MAKE);
pE->data="AVT";
exif_entry_unref (pE);
printf ("Adding a Model reference\n");
pE = exif_entry_new ();
exif_content_add_entry (pEd->ifd[EXIF_IFD_0], pE);
exif_entry_initialize (pE, EXIF_TAG_MODEL);
pE->data="510c";
exif_entry_unref (pE);
printf ("Adding a Tag to reference # samples per pixel\n");
pE = exif_entry_new ();
exif_content_add_entry (pEd->ifd[EXIF_IFD_0], pE);
exif_entry_initialize (pE, EXIF_TAG_SAMPLES_PER_PIXEL); //by default is 3
exif_entry_unref (pE);
printf ("Adding a White Balance Reference\n");
pE = exif_entry_new ();
exif_content_add_entry (pEd->ifd[EXIF_IFD_0], pE);
exif_entry_initialize (pE, EXIF_TAG_WHITE_BALANCE);
exif_set_short(pE->data, exif_data_get_byte_order (pEd), i); //0=auto white balance, 1 = manual white balance
exif_entry_unref (pE);
//need to create logic according to the value of the sharpness
printf ("Adding a Sharpness Reference\n");
pE = exif_entry_new ();
exif_content_add_entry (pEd->ifd[EXIF_IFD_0], pE);
exif_entry_initialize (pE, EXIF_TAG_SHARPNESS);
exif_set_short(pE->data, exif_data_get_byte_order (pEd), 0);
exif_entry_unref (pE);
printf ("Adding a Brightness reference\n");
//try to get brightness
//printf("Float Value: %i\n",xFeatures->feature[DC1394_FEATURE_BRIGHTNESS - DC1394_FEATURE_MIN].value);
pE = exif_entry_new ();
exif_content_add_entry (pEd->ifd[EXIF_IFD_0], pE);
exif_entry_initialize (pE, EXIF_TAG_BRIGHTNESS_VALUE);
exif_set_srational (pE->data, exif_data_get_byte_order (pEd), xR);
//exif_data_dump (ed);
//exif_data_dump (pEd);
*pParentEd = pEd;
printf("Done!\n");
return 0;
}
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