diff options
| author | Umang Jain <email@uajain.com> | 2020-09-09 16:44:45 +0530 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2020-09-10 07:12:47 +0300 |
| commit | 6f09a619cca412f029c124cff8bbf1647d3d68cf (patch) | |
| tree | 1e2dfd0e54e1c0f95af95bc0e9d97a7b1fafeae2 /src/android/jpeg/encoder_libjpeg.cpp | |
| parent | c3d1329b93f0e27cb4b58c998c540c92a8158f20 (diff) | |
android: jpeg: Support an initial set of EXIF metadata tags
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>
Diffstat (limited to 'src/android/jpeg/encoder_libjpeg.cpp')
| -rw-r--r-- | src/android/jpeg/encoder_libjpeg.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/android/jpeg/encoder_libjpeg.cpp b/src/android/jpeg/encoder_libjpeg.cpp index 977538ce..510613cd 100644 --- a/src/android/jpeg/encoder_libjpeg.cpp +++ b/src/android/jpeg/encoder_libjpeg.cpp @@ -180,7 +180,8 @@ void EncoderLibJpeg::compressNV(const libcamera::MappedBuffer *frame) } int EncoderLibJpeg::encode(const FrameBuffer *source, - const libcamera::Span<uint8_t> &dest) + const libcamera::Span<uint8_t> &dest, + const libcamera::Span<const uint8_t> &exifData) { MappedFrameBuffer frame(source, PROT_READ); if (!frame.isValid()) { @@ -204,6 +205,12 @@ int EncoderLibJpeg::encode(const FrameBuffer *source, jpeg_start_compress(&compress_, TRUE); + if (exifData.size()) + /* Store Exif data in the JPEG_APP1 data block. */ + jpeg_write_marker(&compress_, JPEG_APP0 + 1, + static_cast<const JOCTET *>(exifData.data()), + exifData.size()); + LOG(JPEG, Debug) << "JPEG Encode Starting:" << compress_.image_width << "x" << compress_.image_height; |