android: post_processor: Consolidate contextual information

Save and provide the context for post-processor of a camera stream
via Camera3RequestDescriptor::StreamBuffer. We extend the structure
to include source and destination buffers for the post processor, along
with CameraStream::Type::Internal buffer pointer (if any). In addition
to that, a back pointer to Camera3RequestDescriptor is convenient to
get access to overall descriptor (status, metadata settings etc.).

Also, migrate CameraStream::process() and PostProcessor::process()
signature to use Camera3RequestDescriptor::StreamBuffer only. This
will be helpful when we move to async post-processing in subsequent
commits.

Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/src/android/jpeg/post_processor_jpeg.h b/src/android/jpeg/post_processor_jpeg.h
index 0184d77e..92385548 100644
--- a/src/android/jpeg/post_processor_jpeg.h
+++ b/src/android/jpeg/post_processor_jpeg.h
@@ -22,9 +22,7 @@ public:
 
 	int configure(const libcamera::StreamConfiguration &incfg,
 		      const libcamera::StreamConfiguration &outcfg) override;
-	int process(const libcamera::FrameBuffer &source,
-		    CameraBuffer *destination,
-		    Camera3RequestDescriptor *request) override;
+	int process(Camera3RequestDescriptor::StreamBuffer *streamBuffer) override;
 
 private:
 	void generateThumbnail(const libcamera::FrameBuffer &source,