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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>
2020-08-06android: Introduce JPEG encodingKieran Bingham
Provide an encoder interface and implement a JPEG encoder using libjpeg. Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>