From b053384ffab467ed016019bbcf8121a6f9e48fed Mon Sep 17 00:00:00 2001
From: Umang Jain <email@uajain.com>
Date: Wed, 28 Oct 2020 02:54:47 +0530
Subject: android: jpeg: post_processor_jpeg: Embed thumbnail into Exif
 metadata

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>
---
 src/android/jpeg/post_processor_jpeg.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'src/android/jpeg/post_processor_jpeg.h')

diff --git a/src/android/jpeg/post_processor_jpeg.h b/src/android/jpeg/post_processor_jpeg.h
index 3706cec2..5afa831c 100644
--- a/src/android/jpeg/post_processor_jpeg.h
+++ b/src/android/jpeg/post_processor_jpeg.h
@@ -8,12 +8,13 @@
 #define __ANDROID_POST_PROCESSOR_JPEG_H__
 
 #include "../post_processor.h"
+#include "encoder_libjpeg.h"
+#include "thumbnailer.h"
 
 #include <libcamera/geometry.h>
 
 #include "libcamera/internal/buffer.h"
 
-class Encoder;
 class CameraDevice;
 
 class PostProcessorJpeg : public PostProcessor
@@ -28,9 +29,14 @@ public:
 		    CameraMetadata *metadata) override;
 
 private:
+	void generateThumbnail(const libcamera::FrameBuffer &source,
+			       std::vector<unsigned char> *thumbnail);
+
 	CameraDevice *const cameraDevice_;
 	std::unique_ptr<Encoder> encoder_;
 	libcamera::Size streamSize_;
+	EncoderLibJpeg thumbnailEncoder_;
+	Thumbnailer thumbnailer_;
 };
 
 #endif /* __ANDROID_POST_PROCESSOR_JPEG_H__ */
-- 
cgit v1.2.1