android: jpeg: exif: Add functions for setting various values

Add functions for setting the following EXIF fields:

- GPSDatestamp
- GPSTimestamp
- GPSLocation
  - GPSLatitudeRef
  - GPSLatitude
  - GPSLongitudeRef
  - GPSLongitude
  - GPSAltitudeRef
  - GPSAltitude
- GPSProcessingMethod
- FocalLength
- ExposureTime
- FNumber
- ISO
- Flash
- WhiteBalance
- SubsecTime
- SubsecTimeOriginal
- SubsecTimeDigitized

These are in preparation for fixing the following CTS tests:

- android.hardware.camera2.cts.StillCaptureTest#testFocalLengths
- android.hardware.camera2.cts.StillCaptureTest#testJpegExif

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/android/jpeg/post_processor_jpeg.cpp b/src/android/jpeg/post_processor_jpeg.cpp
index 436a50f8..aa0f783d 100644
--- a/src/android/jpeg/post_processor_jpeg.cpp
+++ b/src/android/jpeg/post_processor_jpeg.cpp
@@ -7,6 +7,8 @@
 
 #include "post_processor_jpeg.h"
 
+#include <chrono>
+
 #include "../camera_device.h"
 #include "../camera_metadata.h"
 #include "encoder_libjpeg.h"
@@ -17,6 +19,7 @@
 #include "libcamera/internal/log.h"
 
 using namespace libcamera;
+using namespace std::chrono_literals;
 
 LOG_DEFINE_CATEGORY(JPEG)
 
@@ -97,7 +100,7 @@ int PostProcessorJpeg::process(const FrameBuffer &source,
 	 * Since the precision we need for EXIF timestamp is only one
 	 * second, it is good enough.
 	 */
-	exif.setTimestamp(std::time(nullptr));
+	exif.setTimestamp(std::time(nullptr), 0ms);
 
 	std::vector<unsigned char> thumbnail;
 	generateThumbnail(source, &thumbnail);