android: jpeg: Port to PostProcessor interface

Port the CameraStream's JPEG-encoding bits to PostProcessorJpeg.
This encapsulates the encoder and EXIF generation code into the
PostProcessorJpeg layer and removes these specifics related to JPEG,
from the CameraStream itself.

Signed-off-by: Umang Jain <email@uajain.com>
Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Change-Id: Id9e6e9b2bec83493a90e5e126298a2bb2ed2232a

1 files changed, 36 insertions, 0 deletions

diff --git a/src/android/jpeg/post_processor_jpeg.h b/src/android/jpeg/post_processor_jpeg.h
new file mode 100644
index 00000000..62c86502
--- /dev/null
+++ b/src/android/jpeg/post_processor_jpeg.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2020, Google Inc.
+ *
+ * post_processor_jpeg.h - JPEG Post Processor
+ */
+#ifndef __ANDROID_POST_PROCESSOR_JPEG_H__
+#define __ANDROID_POST_PROCESSOR_JPEG_H__
+
+#include "../post_processor.h"
+
+#include <libcamera/geometry.h>
+
+#include "libcamera/internal/buffer.h"
+
+class Encoder;
+class CameraDevice;
+
+class PostProcessorJpeg : public PostProcessor
+{
+public:
+	PostProcessorJpeg(CameraDevice *device);
+
+	int configure(const libcamera::StreamConfiguration &incfg,
+		      const libcamera::StreamConfiguration &outcfg) override;
+	int process(const libcamera::FrameBuffer *source,
+		    const libcamera::Span<uint8_t> &destination,
+		    CameraMetadata *metadata) override;
+
+private:
+	CameraDevice *cameraDevice_;
+	std::unique_ptr<Encoder> encoder_;
+	libcamera::Size streamSize_;
+};
+
+#endif /* __ANDROID_POST_PROCESSOR_JPEG_H__ */