From 7872b3cd1f6d1ee55f9b5fc772fe5463bd3c647e Mon Sep 17 00:00:00 2001
From: Johannes Hofmann <Johannes.Hofmann@gmx.de>
Date: Mon, 18 Dec 2006 20:09:32 +0100
Subject: add manufacturer model and focal_length to ImageMetaData

---
 src/ImageMetaData.H   |  7 ++++++
 src/ImageMetaData.cxx | 65 ++++++++++++++++++++++++++++++++++++++++-----------
 2 files changed, 59 insertions(+), 13 deletions(-)

diff --git a/src/ImageMetaData.H b/src/ImageMetaData.H
index aa85c15..f9baf75 100644
--- a/src/ImageMetaData.H
+++ b/src/ImageMetaData.H
@@ -9,6 +9,8 @@
 
 class ImageMetaData {
 	private:
+		char *manufacturer;
+		char *model;
 		double longitude;
 		double latitude;
 		double height;
@@ -17,6 +19,7 @@ class ImageMetaData {
 		double tilt;
 		double k0;
 		double k1;
+		double focal_length;
 		double focal_length_35mm;
 		double scale;
 		int    projection_type;
@@ -27,16 +30,20 @@ class ImageMetaData {
 
 	public:
 		ImageMetaData();
+		~ImageMetaData();
 
 		int load_image(char *name, int img_width);
 		int save_image(char *in_img, char *out_img);
 
+		const char *get_manufacturer();
+		const char *get_model();
  		double get_longitude();
 		double get_latitude();
 		double get_height();
 		double get_direction();
 		double get_nick();
 		double get_tilt();
+		double get_focal_length();
 		double get_focal_length_35mm();
 		int    get_projection_type();
 		void get_distortion_params(double *_k0, double *_k1);
diff --git a/src/ImageMetaData.cxx b/src/ImageMetaData.cxx
index 007d7b9..0e2c03b 100644
--- a/src/ImageMetaData.cxx
+++ b/src/ImageMetaData.cxx
@@ -18,19 +18,26 @@
 #include "ImageMetaData.H"
 
 ImageMetaData::ImageMetaData() {
+	manufacturer = NULL;
+	model = NULL;
 	longitude = NAN;
 	latitude = NAN;
-	height = 0.0;
-	direction = 0.0;
-	nick = 0.0;
-	tilt = 0.0;
-	k0 = 0.0;
-	k1 = 0.0;
-	focal_length_35mm = 35.0;
+	height = NAN;
+	direction = NAN;
+	nick = NAN;
+	tilt = NAN;
+	k0 = NAN;
+	k1 = NAN;
+	focal_length = NAN;
+	focal_length_35mm = NAN;
 	scale = NAN;
 	projection_type = 0;
 }
 
+ImageMetaData::~ImageMetaData() {
+	if (manufacturer) free(manufacturer);
+	if (model) free(model);
+}
 
 int
 ImageMetaData::load_image(char *name, int img_width) {
@@ -39,10 +46,16 @@ ImageMetaData::load_image(char *name, int img_width) {
 	ret = load_image_jpgcom(name);
 	if (ret == 2) { // old format
 		focal_length_35mm = scale * 35.0 / (double) img_width;
-	} else if (ret == 1) { // get reasonable defaults from exif data
-		ret = load_image_exif(name);
 	}
 
+	load_image_exif(name); // fill missing values from exif data
+
+	if (isnan(direction)) direction = 0.0;
+	if (isnan(nick)) nick = 0.0;
+	if (isnan(tilt)) tilt = 0.0;
+	if (isnan(k0)) k0 = 0.0;
+	if (isnan(k1)) k1 = 0.0;
+
 	return ret;
 }
 
@@ -69,6 +82,9 @@ degminsecstr2double(char *val) {
     return ret;
 }
 
+#define EXIF_MANUFACTURER              0x010f
+#define EXIF_MODEL                     0x0110
+#define EXIF_FOCAL_LENGTH              0x920a
 #define EXIF_FOCAL_LENGTH_IN_35MM_FILM 0xa405
 #define EXIF_GPS_LATIITUDE             0x0002
 #define EXIF_GPS_LONGITUDE             0x0004
@@ -99,17 +115,26 @@ ImageMetaData::load_image_exif(char *name) {
             }
 
             switch(id) {
+                case EXIF_MANUFACTURER:
+                    if (!manufacturer) manufacturer = strdup(val);
+                    break;
+                case EXIF_MODEL:
+                    if (!model) model = strdup(val);
+                    break;
+                case EXIF_FOCAL_LENGTH:
+                    if (isnan(focal_length)) focal_length = atof(val);
+                    break;
                 case EXIF_FOCAL_LENGTH_IN_35MM_FILM:
-                    focal_length_35mm = atof(val);
+                    if (isnan(focal_length_35mm)) focal_length_35mm = atof(val);
                     break;
                 case EXIF_GPS_LONGITUDE:
-                    longitude = degminsecstr2double(val);
+                    if (isnan(longitude)) longitude = degminsecstr2double(val);
                     break;
                 case EXIF_GPS_LATIITUDE:
-                    latitude = degminsecstr2double(val);
+                    if (isnan(latitude)) latitude = degminsecstr2double(val);
                     break;
                 case EXIF_GPS_ALTITUDE:
-                    height = atof(val);
+                    if (isnan(height)) height = atof(val);
                     break;
             }
         }
@@ -266,6 +291,15 @@ ImageMetaData::save_image_jpgcom(char *in_img, char *out_img) {
     return 0;
 }
 
+const char*
+ImageMetaData::get_manufacturer() {
+	return manufacturer;
+}
+
+const char*
+ImageMetaData::get_model() {
+	return model;
+}
 
 double
 ImageMetaData::get_longitude() {
@@ -297,6 +331,11 @@ ImageMetaData::get_tilt() {
 	return tilt;
 }
 
+double
+ImageMetaData::get_focal_length() {
+	return focal_length;
+}
+
 double
 ImageMetaData::get_focal_length_35mm() {
 	return focal_length_35mm;
-- 
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