1 files changed, 61 insertions, 4 deletions

diff --git a/src/android/jpeg/exif.h b/src/android/jpeg/exif.h
index f04cefce..23b0e097 100644
--- a/src/android/jpeg/exif.h
+++ b/src/android/jpeg/exif.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
 /*
  * Copyright (C) 2020, Google Inc.
  *
@@ -7,13 +7,15 @@
 #ifndef __ANDROID_JPEG_EXIF_H__
 #define __ANDROID_JPEG_EXIF_H__
 
+#include <chrono>
 #include <string>
 #include <time.h>
 
 #include <libexif/exif-data.h>
 
+#include <libcamera/base/span.h>
+
 #include <libcamera/geometry.h>
-#include <libcamera/span.h>
 
 class Exif
 {
@@ -21,12 +23,57 @@ public:
 	Exif();
 	~Exif();
 
+	enum Compression {
+		None = 1,
+		JPEG = 6,
+	};
+
+	enum Flash {
+		/* bit 0 */
+		Fired = 0x01,
+		/* bits 1 and 2 */
+		StrobeDetected = 0x04,
+		StrobeNotDetected = 0x06,
+		/* bits 3 and 4 */
+		ModeCompulsoryFiring = 0x08,
+		ModeCompulsorySuppression = 0x10,
+		ModeAuto = 0x18,
+		/* bit 5 */
+		FlashNotPresent = 0x20,
+		/* bit 6 */
+		RedEye = 0x40,
+	};
+
+	enum WhiteBalance {
+		Auto = 0,
+		Manual = 1,
+	};
+
+	enum StringEncoding {
+		NoEncoding = 0,
+		ASCII = 1,
+		Unicode = 2,
+	};
+
 	void setMake(const std::string &make);
 	void setModel(const std::string &model);
 
 	void setOrientation(int orientation);
 	void setSize(const libcamera::Size &size);
-	void setTimestamp(time_t timestamp);
+	void setThumbnail(libcamera::Span<const unsigned char> thumbnail,
+			  Compression compression);
+	void setTimestamp(time_t timestamp, std::chrono::milliseconds msec);
+
+	void setGPSDateTimestamp(time_t timestamp);
+	void setGPSLocation(const double *coords);
+	void setGPSMethod(const std::string &method);
+
+	void setFocalLength(float length);
+	void setExposureTime(uint64_t nsec);
+	void setAperture(float size);
+	void setISO(uint16_t iso);
+	void setFlash(Flash flash);
+	void setWhiteBalance(WhiteBalance wb);
 
 	libcamera::Span<const uint8_t> data() const { return { exifData_, size_ }; }
 	[[nodiscard]] int generate();
@@ -36,16 +83,26 @@ private:
 	ExifEntry *createEntry(ExifIfd ifd, ExifTag tag, ExifFormat format,
 			       unsigned long components, unsigned int size);
 
+	void setByte(ExifIfd ifd, ExifTag tag, uint8_t item);
 	void setShort(ExifIfd ifd, ExifTag tag, uint16_t item);
 	void setLong(ExifIfd ifd, ExifTag tag, uint32_t item);
 	void setString(ExifIfd ifd, ExifTag tag, ExifFormat format,
-		       const std::string &item);
+		       const std::string &item,
+		       StringEncoding encoding = NoEncoding);
 	void setRational(ExifIfd ifd, ExifTag tag, ExifRational item);
+	void setRational(ExifIfd ifd, ExifTag tag,
+			 libcamera::Span<const ExifRational> items);
+
+	std::tuple<int, int, int> degreesToDMS(double decimalDegrees);
+	void setGPSDMS(ExifIfd ifd, ExifTag tag, int deg, int min, int sec);
+
+	std::u16string utf8ToUtf16(const std::string &str);
 
 	bool valid_;
 
 	ExifData *data_;
 	ExifMem *mem_;
+	ExifByteOrder order_;
 
 	unsigned char *exifData_;
 	unsigned int size_;