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android: jpeg: Support an initial set of EXIF metadata tags

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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>
This commit is contained in:
Umang Jain 2020-09-09 16:44:45 +05:30 • committed by Laurent Pinchart
parent c3d1329b93
commit 6f09a619cc
6 changed files with 88 additions and 4 deletions
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3
src/android/jpeg/encoder_libjpeg.h
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@ -22,7 +22,8 @@ public:
int configure(const libcamera::StreamConfiguration &cfg) override;
int encode(const libcamera::FrameBuffer *source,
const libcamera::Span<uint8_t> &destination) override;
const libcamera::Span<uint8_t> &destination,
const libcamera::Span<const uint8_t> &exifData) override;
private:
void compressRGB(const libcamera::MappedBuffer *frame);