libcamera: ipu3: imgu: Move the ImgUDevice class to separate files

In preparation of refactoring the IPU3 pipeline handler breakout the
ImgUDevice into its own .cpp and .h file, no functional change.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/src/libcamera/pipeline/ipu3/imgu.h b/src/libcamera/pipeline/ipu3/imgu.h
new file mode 100644
index 00000000..1826baa9
--- /dev/null
+++ b/src/libcamera/pipeline/ipu3/imgu.h
@@ -0,0 +1,84 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * imgu.h - Intel IPU3 ImgU
+ */
+#ifndef __LIBCAMERA_PIPELINE_IPU3_IMGU_H__
+#define __LIBCAMERA_PIPELINE_IPU3_IMGU_H__
+
+#include <string>
+
+#include "libcamera/internal/v4l2_subdevice.h"
+#include "libcamera/internal/v4l2_videodevice.h"
+
+namespace libcamera {
+
+class FrameBuffer;
+class MediaDevice;
+struct Size;
+struct StreamConfiguration;
+
+class ImgUDevice
+{
+public:
+	static constexpr unsigned int PAD_INPUT = 0;
+	static constexpr unsigned int PAD_OUTPUT = 2;
+	static constexpr unsigned int PAD_VF = 3;
+	static constexpr unsigned int PAD_STAT = 4;
+
+	/* ImgU output descriptor: group data specific to an ImgU output. */
+	struct ImgUOutput {
+		V4L2VideoDevice *dev;
+		unsigned int pad;
+		std::string name;
+	};
+
+	ImgUDevice()
+		: imgu_(nullptr), input_(nullptr)
+	{
+		output_.dev = nullptr;
+		viewfinder_.dev = nullptr;
+		stat_.dev = nullptr;
+	}
+
+	~ImgUDevice()
+	{
+		delete imgu_;
+		delete input_;
+		delete output_.dev;
+		delete viewfinder_.dev;
+		delete stat_.dev;
+	}
+
+	int init(MediaDevice *media, unsigned int index);
+	int configureInput(const Size &size, V4L2DeviceFormat *inputFormat);
+	int configureOutput(ImgUOutput *output, const StreamConfiguration &cfg,
+			    V4L2DeviceFormat *outputFormat);
+
+	int allocateBuffers(unsigned int bufferCount);
+	void freeBuffers();
+
+	int start();
+	int stop();
+
+	int linkSetup(const std::string &source, unsigned int sourcePad,
+		      const std::string &sink, unsigned int sinkPad,
+		      bool enable);
+	int enableLinks(bool enable);
+
+	unsigned int index_;
+	std::string name_;
+	MediaDevice *media_;
+
+	V4L2Subdevice *imgu_;
+	V4L2VideoDevice *input_;
+	ImgUOutput output_;
+	ImgUOutput viewfinder_;
+	ImgUOutput stat_;
+	/* \todo Add param video device for 3A tuning */
+};
+
+} /* namespace libcamera */
+
+#endif /* __LIBCAMERA_PIPELINE_IPU3_IMGU_H__ */