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android: jpeg: post_processor_jpeg: Embed thumbnail into Exif metadata

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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>
This commit is contained in:
Umang Jain 2020-10-28 02:54:47 +05:30 • committed by Kieran Bingham
parent f0421988dc
commit b053384ffa
4 changed files with 77 additions and 2 deletions
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7
src/android/jpeg/exif.h
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@ -21,11 +21,18 @@ public:
Exif();
~Exif();
enum Compression {
None = 1,
JPEG = 6,
};
void setMake(const std::string &make);
void setModel(const std::string &model);
void setOrientation(int orientation);
void setSize(const libcamera::Size &size);
void setThumbnail(libcamera::Span<const unsigned char> thumbnail,
Compression compression);
void setTimestamp(time_t timestamp);
libcamera::Span<const uint8_t> data() const { return { exifData_, size_ }; }