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2021-03-10android: jpeg: exif: Fix and expand setRationalPaul Elder
setRational was not working properly for EXIF tags in the GPS IFD due to libexif not supporting those tags in exif_entry_initialize(). Manually specify the size of the EXIF entry to fix this. While at it, add support for setting multiple rationals, as that is a common use case for rational EXIF tags. As Rational types are no longer initialized by libexif directly, the EXIF_TAG_{X,Y}_RESOLUTION exif tags will not have their default values populated. This allows the GPS altitude to be set properly, and is part of the fix to allow the following CTS test to pass: - android.hardware.cts.CameraTest#testJpegExif Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2021-01-27android: jpeg: exif: Add functions for setting various valuesPaul Elder
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>
2021-01-27android: jpeg: exif: Fix setOrientation EXIF valuesPaul Elder
The input to setOrientation is angle clockwise from the sensor orientation, while the EXIF output values were swapped for 90 and 270 degrees. From the EXIF spec: 6 = The 0th row is the visual right-hand side of the image, and the 0th column is the visual top. 8 = The 0th row is the visual left-hand side of the image, and the 0th column is the visual bottom. 6 should be 90 degrees clockwise, while 8 should 270 degrees clockwise. Fix this. As Android defines the rotation as the clockwise angle by which the image needs to be rotated to appear in the correct orientation on the device screen, the previous values would be correct if the input angle was from the camera orientation. Since the correct input should be the requested JPEG orientation, these new values are the correct ones. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2021-01-27android: jpeg: exif: Expand setString to support different encodingsPaul Elder
GPSProcessingMethod and UserComment in EXIF tags can be in UTF-16. Expand setString to take an encoding when the field type is undefined. Update callers accordingly. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-10-28android: jpeg: post_processor_jpeg: Embed thumbnail into Exif metadataUmang Jain
Embed a Jpeg-encoded thumbnail into Exif metadata using the Thumbnailer class that got introduced. Introduce a helper function in Exif class for setting the thumbnail data. Signed-off-by: Umang Jain <email@uajain.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> [Kieran: Add todo comment, and Compression enum] Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-10-10android: jpeg: Use LGPL-2.1 licenseUmang Jain
The jpeg components are licensed under GPL-2.0-or-later. This is an oversight and unvoluntary. License them under the LGPL-2.1-or-later as the rest of the camera HAL implementation. Signed-off-by: Umang Jain <email@uajain.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-10-07android: jpeg: exif: Sanitize ASCII strings with utils::toAscii()Umang Jain
Use the newly introduced utils::toAscii() utility to remove all non-ASCII characters for EXIF_FORMAT_ASCII strings. Signed-off-by: Umang Jain <email@uajain.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-10-02src: android: exif: Set the class byte orderingKieran Bingham
The exif object sets the byte ordering on construction, and then during later calls re-states the byte ordering when setting values. It could be argued that this ordering should already be known to the exif library and is redundant, but even so we must provide it. Ensure we are consistent in always using the same byte ordering by setting a private class member to re-use a single value. Reviewed-by: Umang Jain <email@uajain.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2020-09-29android: jpeg: exif: Set timezone informationUmang Jain
The EXIF specification defines three timezone related tags, namely OffsetTime, OffsetTimeOriginal and OffsetTimeDigitized. However, these are not supported by libexif (as of v0.6.21) hence, carry the tags' positional values in our implementation until we get this support from libexif itself. Since these tags were introduced in EXIF specification v2.31, set the exif version number explicitly too. Signed-off-by: Umang Jain <email@uajain.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-09-29android: jpeg: exif: Pad extra byte only for ASCII format in setString()Umang Jain
The EXIF standard states that EXIF_FORMAT_UNDEFINED shall not be terminated with NULL. The patch implements this particular detail and pad one extra byte for EXIF_FORMAT_ASCII to null-terminate strings. Signed-off-by: Umang Jain <email@uajain.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-09-20android: jpeg: exif: Use reentrant localtime_r()Laurent Pinchart
The std::localtime() function isn't thread-safe, and we have no guarantee whether other threads in the camera service may or may not call it. Replace it with localtime_r(). This requires switching from ctime to time.h, as there is no std::localtime_r() function. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <email@uajain.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2020-09-10android: jpeg: Support an initial set of EXIF metadata tagsUmang Jain
Create a Exif object with various metadata tags set, just before the encoder starts to encode the frame. The object is passed directly as libcamera::Span<> to make sure EXIF tags can be set in a single place i.e. in CameraDevice and the encoder only has the job to write the data in the final output. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Umang Jain <email@uajain.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-09-10android: jpeg: Add EXIF infrastructureKieran Bingham
Provide helper classes to utilise the libexif interfaces and link against libexif to support tag additions when creating JPEG images. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Umang Jain <email@uajain.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>