pipeline: ipa: raspberrypi: Refactor and move the Raspberry Pi code

Split the Raspberry Pi pipeline handler and IPA source code into common
and VC4/BCM2835 specific file structures.

For the pipeline handler, the common code files now live in
src/libcamera/pipeline/rpi/common/
and the VC4-specific files in src/libcamera/pipeline/rpi/vc4/.

For the IPA, the common code files now live in
src/ipa/rpi/{cam_helper,controller}/
and the vc4 specific files in src/ipa/rpi/vc4/. With this change, the
camera tuning files are now installed under share/libcamera/ipa/rpi/vc4/.

To build the pipeline and IPA, the meson configuration options have now
changed from "raspberrypi" to "rpi/vc4":

meson setup build -Dipas=rpi/vc4 -Dpipelines=rpi/vc4

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 0 insertions, 185 deletions

diff --git a/src/libcamera/pipeline/raspberrypi/rpi_stream.h b/src/libcamera/pipeline/raspberrypi/rpi_stream.h
deleted file mode 100644
index b8bd79cf..00000000
--- a/src/libcamera/pipeline/raspberrypi/rpi_stream.h
+++ /dev/null
@@ -1,185 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2020, Raspberry Pi Ltd
- *
- * rpi_stream.h - Raspberry Pi device stream abstraction class.
- */
-
-#pragma once
-
-#include <queue>
-#include <string>
-#include <unordered_map>
-#include <vector>
-
-#include <libcamera/stream.h>
-
-#include "libcamera/internal/v4l2_videodevice.h"
-
-namespace libcamera {
-
-namespace RPi {
-
-using BufferMap = std::unordered_map<unsigned int, FrameBuffer *>;
-
-enum BufferMask {
-	MaskID			= 0x00ffff,
-	MaskStats		= 0x010000,
-	MaskEmbeddedData	= 0x020000,
-	MaskBayerData		= 0x040000,
-	MaskExternalBuffer	= 0x100000,
-};
-
-/*
- * Device stream abstraction for either an internal or external stream.
- * Used for both Unicam and the ISP.
- */
-class Stream : public libcamera::Stream
-{
-public:
-	Stream()
-		: id_(BufferMask::MaskID)
-	{
-	}
-
-	Stream(const char *name, MediaEntity *dev, bool importOnly = false)
-		: external_(false), importOnly_(importOnly), name_(name),
-		  dev_(std::make_unique<V4L2VideoDevice>(dev)), id_(BufferMask::MaskID)
-	{
-	}
-
-	V4L2VideoDevice *dev() const;
-	std::string name() const;
-	bool isImporter() const;
-	void resetBuffers();
-
-	void setExternal(bool external);
-	bool isExternal() const;
-
-	void setExportedBuffers(std::vector<std::unique_ptr<FrameBuffer>> *buffers);
-	const BufferMap &getBuffers() const;
-	int getBufferId(FrameBuffer *buffer) const;
-
-	void setExternalBuffer(FrameBuffer *buffer);
-	void removeExternalBuffer(FrameBuffer *buffer);
-
-	int prepareBuffers(unsigned int count);
-	int queueBuffer(FrameBuffer *buffer);
-	void returnBuffer(FrameBuffer *buffer);
-
-	int queueAllBuffers();
-	void releaseBuffers();
-
-private:
-	class IdGenerator
-	{
-	public:
-		IdGenerator(int max)
-			: max_(max), id_(0)
-		{
-		}
-
-		int get()
-		{
-			int id;
-			if (!recycle_.empty()) {
-				id = recycle_.front();
-				recycle_.pop();
-			} else {
-				id = id_++;
-				ASSERT(id_ <= max_);
-			}
-			return id;
-		}
-
-		void release(int id)
-		{
-			recycle_.push(id);
-		}
-
-		void reset()
-		{
-			id_ = 0;
-			recycle_ = {};
-		}
-
-	private:
-		int max_;
-		int id_;
-		std::queue<int> recycle_;
-	};
-
-	void clearBuffers();
-	int queueToDevice(FrameBuffer *buffer);
-
-	/*
-	 * Indicates that this stream is active externally, i.e. the buffers
-	 * might be provided by (and returned to) the application.
-	 */
-	bool external_;
-
-	/* Indicates that this stream only imports buffers, e.g. ISP input. */
-	bool importOnly_;
-
-	/* Stream name identifier. */
-	std::string name_;
-
-	/* The actual device stream. */
-	std::unique_ptr<V4L2VideoDevice> dev_;
-
-	/* Tracks a unique id key for the bufferMap_ */
-	IdGenerator id_;
-
-	/* All frame buffers associated with this device stream. */
-	BufferMap bufferMap_;
-
-	/*
-	 * List of frame buffers that we can use if none have been provided by
-	 * the application for external streams. This is populated by the
-	 * buffers exported internally.
-	 */
-	std::queue<FrameBuffer *> availableBuffers_;
-
-	/*
-	 * List of frame buffers that are to be queued into the device from a Request.
-	 * A nullptr indicates any internal buffer can be used (from availableBuffers_),
-	 * whereas a valid pointer indicates an external buffer to be queued.
-	 *
-	 * Ordering buffers to be queued is important here as it must match the
-	 * requests coming from the application.
-	 */
-	std::queue<FrameBuffer *> requestBuffers_;
-
-	/*
-	 * This is a list of buffers exported internally. Need to keep this around
-	 * as the stream needs to maintain ownership of these buffers.
-	 */
-	std::vector<std::unique_ptr<FrameBuffer>> internalBuffers_;
-};
-
-/*
- * The following class is just a convenient (and typesafe) array of device
- * streams indexed with an enum class.
- */
-template<typename E, std::size_t N>
-class Device : public std::array<class Stream, N>
-{
-private:
-	constexpr auto index(E e) const noexcept
-	{
-		return static_cast<std::underlying_type_t<E>>(e);
-	}
-public:
-	Stream &operator[](E e)
-	{
-		return std::array<class Stream, N>::operator[](index(e));
-	}
-	const Stream &operator[](E e) const
-	{
-		return std::array<class Stream, N>::operator[](index(e));
-	}
-};
-
-} /* namespace RPi */
-
-} /* namespace libcamera */