libcamera: raspberrypi: Remove StaggeredCtrl

There are no users left, remove it.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>

3 files changed, 0 insertions, 271 deletions

diff --git a/src/libcamera/pipeline/raspberrypi/meson.build b/src/libcamera/pipeline/raspberrypi/meson.build
index 7c5b6ff7..f1a2f5ee 100644
--- a/src/libcamera/pipeline/raspberrypi/meson.build
+++ b/src/libcamera/pipeline/raspberrypi/meson.build
@@ -4,5 +4,4 @@ libcamera_sources += files([
     'dma_heaps.cpp',
     'raspberrypi.cpp',
     'rpi_stream.cpp',
-    'staggered_ctrl.cpp',
 ])
diff --git a/src/libcamera/pipeline/raspberrypi/staggered_ctrl.cpp b/src/libcamera/pipeline/raspberrypi/staggered_ctrl.cpp
deleted file mode 100644
index 62605c0f..00000000
--- a/src/libcamera/pipeline/raspberrypi/staggered_ctrl.cpp
+++ /dev/null
@@ -1,174 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2020, Raspberry Pi (Trading) Ltd.
- *
- * staggered_ctrl.cpp - Helper for writing staggered ctrls to a V4L2 device.
- */
-
-#include "staggered_ctrl.h"
-
-#include <algorithm>
-
-#include <libcamera/controls.h>
-
-#include "libcamera/internal/log.h"
-#include "libcamera/internal/utils.h"
-#include "libcamera/internal/v4l2_videodevice.h"
-
-namespace libcamera {
-
-LOG_DEFINE_CATEGORY(RPI_S_W)
-
-namespace RPi {
-
-void StaggeredCtrl::init(V4L2VideoDevice *dev,
-	  std::initializer_list<std::pair<const uint32_t, uint8_t>> delayList)
-{
-	std::lock_guard<std::mutex> lock(lock_);
-
-	dev_ = dev;
-	delay_ = delayList;
-	ctrl_.clear();
-
-	/* Find the largest delay across all controls. */
-	maxDelay_ = 0;
-	for (auto const &p : delay_) {
-		LOG(RPI_S_W, Info) << "Init ctrl "
-				   << utils::hex(p.first) << " with delay "
-				   << static_cast<int>(p.second);
-		maxDelay_ = std::max(maxDelay_, p.second);
-	}
-
-	init_ = true;
-}
-
-void StaggeredCtrl::reset()
-{
-	std::lock_guard<std::mutex> lock(lock_);
-
-	int lastSetCount = setCount_;
-	std::unordered_map<uint32_t, int32_t> lastVal;
-
-	/* Reset the counters. */
-	setCount_ = getCount_ = 0;
-
-	/* Look for the last set values. */
-	for (auto const &c : ctrl_)
-		lastVal[c.first] = c.second[lastSetCount].value;
-
-	/* Apply the last set values as the next to be applied. */
-	ctrl_.clear();
-	for (auto &c : lastVal)
-		ctrl_[c.first][setCount_] = CtrlInfo(c.second);
-}
-
-bool StaggeredCtrl::set(uint32_t ctrl, int32_t value)
-{
-	std::lock_guard<std::mutex> lock(lock_);
-
-	/* Can we find this ctrl as one that is registered? */
-	if (delay_.find(ctrl) == delay_.end())
-		return false;
-
-	ctrl_[ctrl][setCount_].value = value;
-	ctrl_[ctrl][setCount_].updated = true;
-
-	return true;
-}
-
-bool StaggeredCtrl::set(std::initializer_list<std::pair<const uint32_t, int32_t>> ctrlList)
-{
-	std::lock_guard<std::mutex> lock(lock_);
-
-	for (auto const &p : ctrlList) {
-		/* Can we find this ctrl? */
-		if (delay_.find(p.first) == delay_.end())
-			return false;
-
-		ctrl_[p.first][setCount_] = CtrlInfo(p.second);
-	}
-
-	return true;
-}
-
-bool StaggeredCtrl::set(const ControlList &controls)
-{
-	std::lock_guard<std::mutex> lock(lock_);
-
-	for (auto const &p : controls) {
-		/* Can we find this ctrl? */
-		if (delay_.find(p.first) == delay_.end())
-			return false;
-
-		ctrl_[p.first][setCount_] = CtrlInfo(p.second.get<int32_t>());
-		LOG(RPI_S_W, Debug) << "Setting ctrl "
-				    << utils::hex(p.first) << " to "
-				    << ctrl_[p.first][setCount_].value
-				    << " at index "
-				    << setCount_;
-	}
-
-	return true;
-}
-
-int StaggeredCtrl::write()
-{
-	std::lock_guard<std::mutex> lock(lock_);
-	ControlList controls(dev_->controls());
-
-	for (auto &p : ctrl_) {
-		int delayDiff = maxDelay_ - delay_[p.first];
-		int index = std::max<int>(0, setCount_ - delayDiff);
-
-		if (p.second[index].updated) {
-			/* We need to write this value out. */
-			controls.set(p.first, p.second[index].value);
-			p.second[index].updated = false;
-			LOG(RPI_S_W, Debug) << "Writing ctrl "
-					    << utils::hex(p.first) << " to "
-					    << p.second[index].value
-					    << " at index "
-					    << index;
-		}
-	}
-
-	nextFrame();
-	return dev_->setControls(&controls);
-}
-
-void StaggeredCtrl::get(std::unordered_map<uint32_t, int32_t> &ctrl, uint8_t offset)
-{
-	std::lock_guard<std::mutex> lock(lock_);
-
-	/* Account for the offset to reset the getCounter. */
-	getCount_ += offset + 1;
-
-	ctrl.clear();
-	for (auto &p : ctrl_) {
-		int index = std::max<int>(0, getCount_ - maxDelay_);
-		ctrl[p.first] = p.second[index].value;
-		LOG(RPI_S_W, Debug) << "Getting ctrl "
-				    << utils::hex(p.first) << " to "
-				    << p.second[index].value
-				    << " at index "
-				    << index;
-	}
-}
-
-void StaggeredCtrl::nextFrame()
-{
-	/* Advance the control history to the next frame */
-	int prevCount = setCount_;
-	setCount_++;
-
-	LOG(RPI_S_W, Debug) << "Next frame, set index is " << setCount_;
-
-	for (auto &p : ctrl_) {
-		p.second[setCount_].value = p.second[prevCount].value;
-		p.second[setCount_].updated = false;
-	}
-}
-
-} /* namespace RPi */
-
-} /* namespace libcamera */
diff --git a/src/libcamera/pipeline/raspberrypi/staggered_ctrl.h b/src/libcamera/pipeline/raspberrypi/staggered_ctrl.h
deleted file mode 100644
index 382fa31a..00000000
--- a/src/libcamera/pipeline/raspberrypi/staggered_ctrl.h
+++ /dev/null
@@ -1,96 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2020, Raspberry Pi (Trading) Ltd.
- *
- * staggered_ctrl.h - Helper for writing staggered ctrls to a V4L2 device.
- */
-#ifndef __LIBCAMERA_PIPELINE_RASPBERRYPI_STAGGERED_CTRL_H__
-#define __LIBCAMERA_PIPELINE_RASPBERRYPI_STAGGERED_CTRL_H__
-
-#include <array>
-#include <initializer_list>
-#include <mutex>
-#include <unordered_map>
-#include <utility>
-
-namespace libcamera {
-
-class ControlList;
-class V4L2VideoDevice;
-
-namespace RPi {
-
-class StaggeredCtrl
-{
-public:
-	StaggeredCtrl()
-		: init_(false), setCount_(0), getCount_(0), maxDelay_(0)
-	{
-	}
-
-	operator bool() const
-	{
-		return init_;
-	}
-
-	void init(V4L2VideoDevice *dev,
-		  std::initializer_list<std::pair<const uint32_t, uint8_t>> delayList);
-	void reset();
-
-	void get(std::unordered_map<uint32_t, int32_t> &ctrl, uint8_t offset = 0);
-
-	bool set(uint32_t ctrl, int32_t value);
-	bool set(std::initializer_list<std::pair<const uint32_t, int32_t>> ctrlList);
-	bool set(const ControlList &controls);
-
-	int write();
-
-private:
-	void nextFrame();
-
-	/* listSize must be a power of 2. */
-	static constexpr int listSize = (1 << 4);
-	struct CtrlInfo {
-		CtrlInfo()
-			: value(0), updated(false)
-		{
-		}
-
-		CtrlInfo(int32_t value_)
-			: value(value_), updated(true)
-		{
-		}
-
-		int32_t value;
-		bool updated;
-	};
-
-	class CircularArray : public std::array<CtrlInfo, listSize>
-	{
-	public:
-		CtrlInfo &operator[](int index)
-		{
-			return std::array<CtrlInfo, listSize>::operator[](index & (listSize - 1));
-		}
-
-		const CtrlInfo &operator[](int index) const
-		{
-			return std::array<CtrlInfo, listSize>::operator[](index & (listSize - 1));
-		}
-	};
-
-	bool init_;
-	uint32_t setCount_;
-	uint32_t getCount_;
-	uint8_t maxDelay_;
-	V4L2VideoDevice *dev_;
-	std::unordered_map<uint32_t, uint8_t> delay_;
-	std::unordered_map<uint32_t, CircularArray> ctrl_;
-	std::mutex lock_;
-};
-
-} /* namespace RPi */
-
-} /* namespace libcamera */
-
-#endif /* __LIBCAMERA_PIPELINE_RASPBERRYPI_STAGGERED_CTRL_H__ */