/* SPDX-License-Identifier: BSD-2-Clause */
/*
 * Copyright (C) 2019, Raspberry Pi Ltd
 *
 * controller.h - ISP controller interface
 */
#pragma once

/*
 * The Controller is simply a container for a collecting together a number of
 * "control algorithms" (such as AWB etc.) and for running them all in a
 * convenient manner.
 */

#include <vector>
#include <string>

#include "libcamera/internal/yaml_parser.h"

#include "camera_mode.h"
#include "device_status.h"
#include "metadata.h"
#include "statistics.h"

namespace RPiController {

class Algorithm;
typedef std::unique_ptr<Algorithm> AlgorithmPtr;

/*
 * The Controller holds a pointer to some global_metadata, which is how
 * different controllers and control algorithms within them can exchange
 * information. The Prepare function returns a pointer to metadata for this
 * specific image, and which should be passed on to the Process function.
 */

class Controller
{
public:
	struct HardwareConfig {
		libcamera::Size agcRegions;
		libcamera::Size agcZoneWeights;
		libcamera::Size awbRegions;
		libcamera::Size focusRegions;
		unsigned int numHistogramBins;
		unsigned int numGammaPoints;
		unsigned int pipelineWidth;
	};

	Controller();
	~Controller();
	int read(char const *filename);
	void initialise();
	void switchMode(CameraMode const &cameraMode, Metadata *metadata);
	void prepare(Metadata *imageMetadata);
	void process(StatisticsPtr stats, Metadata *imageMetadata);
	Metadata &getGlobalMetadata();
	Algorithm *getAlgorithm(std::string const &name) const;
	const std::string &getTarget() const;
	const HardwareConfig &getHardwareConfig() const;

protected:
	int createAlgorithm(const std::string &name, const libcamera::YamlObject &params);

	Metadata globalMetadata_;
	std::vector<AlgorithmPtr> algorithms_;
	bool switchModeCalled_;

private:
	std::string target_;
};

} /* namespace RPiController */
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<td class='lines'><pre><code><span class="hl com">/* SPDX-License-Identifier: GPL-2.0-or-later */</span>
<span class="hl com">/*</span>
<span class="hl com"> * Copyright (C) 2019, Google Inc.</span>
<span class="hl com"> *</span>
<span class="hl com"> * signal.cpp - Signal test</span>
<span class="hl com"> */</span>

<span class="hl ppc">#include &lt;iostream&gt;</span>
<span class="hl ppc">#include &lt;string.h&gt;</span>

<span class="hl ppc">#include &lt;libcamera/signal.h&gt;</span>

<span class="hl ppc">#include</span> <span class="hl pps">&quot;test.h&quot;</span><span class="hl ppc"></span>

<span class="hl kwa">using namespace</span> std<span class="hl opt">;</span>
<span class="hl kwa">using namespace</span> libcamera<span class="hl opt">;</span>

<span class="hl kwb">static int</span> valueStatic_ <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>

<span class="hl kwb">static void</span> <span class="hl kwd">slotStatic</span><span class="hl opt">(</span><span class="hl kwb">int</span> value<span class="hl opt">)</span>
<span class="hl opt">{</span>
	valueStatic_ <span class="hl opt">=</span> value<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwc">class</span> SignalTest <span class="hl opt">:</span> <span class="hl kwc">public</span> Test
<span class="hl opt">{</span>
<span class="hl kwc">protected</span><span class="hl opt">:</span>
	<span class="hl kwb">void</span> <span class="hl kwd">slotVoid</span><span class="hl opt">()</span>
	<span class="hl opt">{</span>
		called_ <span class="hl opt">=</span> <span class="hl kwa">true</span><span class="hl opt">;</span>
	<span class="hl opt">}</span>

	<span class="hl kwb">void</span> <span class="hl kwd">slotDisconnect</span><span class="hl opt">()</span>
	<span class="hl opt">{</span>
		called_ <span class="hl opt">=</span> <span class="hl kwa">true</span><span class="hl opt">;</span>
		signalVoid_<span class="hl opt">.</span><span class="hl kwd">disconnect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &amp;</span><span class="hl kwc">SignalTest</span><span class="hl opt">::</span>slotDisconnect<span class="hl opt">);</span>
	<span class="hl opt">}</span>

	<span class="hl kwb">void</span> <span class="hl kwd">slotInteger1</span><span class="hl opt">(</span><span class="hl kwb">int</span> value<span class="hl opt">)</span>
	<span class="hl opt">{</span>
		values_<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">] =</span> value<span class="hl opt">;</span>
	<span class="hl opt">}</span>

	<span class="hl kwb">void</span> <span class="hl kwd">slotInteger2</span><span class="hl opt">(</span><span class="hl kwb">int</span> value<span class="hl opt">)</span>
	<span class="hl opt">{</span>
		values_<span class="hl opt">[</span><span class="hl num">1</span><span class="hl opt">] =</span> value<span class="hl opt">;</span>
	<span class="hl opt">}</span>

	<span class="hl kwb">void</span> <span class="hl kwd">slotMultiArgs</span><span class="hl opt">(</span><span class="hl kwb">int</span> value<span class="hl opt">,</span> <span class="hl kwb">const</span> <span class="hl kwc">std</span><span class="hl opt">::</span>string <span class="hl opt">&amp;</span>name<span class="hl opt">)</span>
	<span class="hl opt">{</span>
		values_<span class="hl opt">[</span><span class="hl num">2</span><span class="hl opt">] =</span> value<span class="hl opt">;</span>
		name_ <span class="hl opt">=</span> name<span class="hl opt">;</span>
	<span class="hl opt">}</span>

	<span class="hl kwb">int</span> <span class="hl kwd">init</span><span class="hl opt">()</span>
	<span class="hl opt">{</span>
		<span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
	<span class="hl opt">}</span>

	<span class="hl kwb">int</span> <span class="hl kwd">run</span><span class="hl opt">()</span>
	<span class="hl opt">{</span>
		<span class="hl com">/* Test signal emission and reception. */</span>
		called_ <span class="hl opt">=</span> <span class="hl kwa">false</span><span class="hl opt">;</span>
		signalVoid_<span class="hl opt">.</span><span class="hl kwd">connect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &amp;</span><span class="hl kwc">SignalTest</span><span class="hl opt">::</span>slotVoid<span class="hl opt">);</span>
		signalVoid_<span class="hl opt">.</span><span class="hl kwd">emit</span><span class="hl opt">();</span>

		<span class="hl kwa">if</span> <span class="hl opt">(!</span>called_<span class="hl opt">) {</span>
			cout <span class="hl opt">&lt;&lt;</span> <span class="hl str">&quot;Signal emission test failed&quot;</span> <span class="hl opt">&lt;&lt;</span> endl<span class="hl opt">;</span>
			<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
		<span class="hl opt">}</span>

		<span class="hl com">/* Test signal with parameters. */</span>
		values_<span class="hl opt">[</span><span class="hl num">2</span><span class="hl opt">] =</span> <span class="hl num">0</span><span class="hl opt">;</span>
		name_<span class="hl opt">.</span><span class="hl kwd">clear</span><span class="hl opt">();</span>
		signalMultiArgs_<span class="hl opt">.</span><span class="hl kwd">connect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &amp;</span><span class="hl kwc">SignalTest</span><span class="hl opt">::</span>slotMultiArgs<span class="hl opt">);</span>
		signalMultiArgs_<span class="hl opt">.</span><span class="hl kwd">emit</span><span class="hl opt">(</span><span class="hl num">42</span><span class="hl opt">,</span> <span class="hl str">&quot;H2G2&quot;</span><span class="hl opt">);</span>

		<span class="hl kwa">if</span> <span class="hl opt">(</span>values_<span class="hl opt">[</span><span class="hl num">2</span><span class="hl opt">] !=</span> <span class="hl num">42</span> <span class="hl opt">||</span> name_ <span class="hl opt">!=</span> <span class="hl str">&quot;H2G2&quot;</span><span class="hl opt">) {</span>
			cout <span class="hl opt">&lt;&lt;</span> <span class="hl str">&quot;Signal parameters test failed&quot;</span> <span class="hl opt">&lt;&lt;</span> endl<span class="hl opt">;</span>
			<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
		<span class="hl opt">}</span>

		<span class="hl com">/* Test signal connected to multiple slots. */</span>
		<span class="hl kwd">memset</span><span class="hl opt">(</span>values_<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span>values_<span class="hl opt">));</span>
		valueStatic_ <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">connect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &amp;</span><span class="hl kwc">SignalTest</span><span class="hl opt">::</span>slotInteger1<span class="hl opt">);</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">connect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &amp;</span><span class="hl kwc">SignalTest</span><span class="hl opt">::</span>slotInteger2<span class="hl opt">);</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">connect</span><span class="hl opt">(&amp;</span>slotStatic<span class="hl opt">);</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">emit</span><span class="hl opt">(</span><span class="hl num">42</span><span class="hl opt">);</span>

		<span class="hl kwa">if</span> <span class="hl opt">(</span>values_<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">] !=</span> <span class="hl num">42</span> <span class="hl opt">||</span> values_<span class="hl opt">[</span><span class="hl num">1</span><span class="hl opt">] !=</span> <span class="hl num">42</span> <span class="hl opt">||</span> values_<span class="hl opt">[</span><span class="hl num">2</span><span class="hl opt">] !=</span> <span class="hl num">0</span> <span class="hl opt">||</span>
		    valueStatic_ <span class="hl opt">!=</span> <span class="hl num">42</span><span class="hl opt">) {</span>
			cout <span class="hl opt">&lt;&lt;</span> <span class="hl str">&quot;Signal multi slot test failed&quot;</span> <span class="hl opt">&lt;&lt;</span> endl<span class="hl opt">;</span>
			<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
		<span class="hl opt">}</span>

		<span class="hl com">/* Test disconnection of a single slot. */</span>
		<span class="hl kwd">memset</span><span class="hl opt">(</span>values_<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span>values_<span class="hl opt">));</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">disconnect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &amp;</span><span class="hl kwc">SignalTest</span><span class="hl opt">::</span>slotInteger2<span class="hl opt">);</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">emit</span><span class="hl opt">(</span><span class="hl num">42</span><span class="hl opt">);</span>

		<span class="hl kwa">if</span> <span class="hl opt">(</span>values_<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">] !=</span> <span class="hl num">42</span> <span class="hl opt">||</span> values_<span class="hl opt">[</span><span class="hl num">1</span><span class="hl opt">] !=</span> <span class="hl num">0</span> <span class="hl opt">||</span> values_<span class="hl opt">[</span><span class="hl num">2</span><span class="hl opt">] !=</span> <span class="hl num">0</span><span class="hl opt">) {</span>
			cout <span class="hl opt">&lt;&lt;</span> <span class="hl str">&quot;Signal slot disconnection test failed&quot;</span> <span class="hl opt">&lt;&lt;</span> endl<span class="hl opt">;</span>
			<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
		<span class="hl opt">}</span>

		<span class="hl com">/* Test disconnection of a whole object. */</span>
		<span class="hl kwd">memset</span><span class="hl opt">(</span>values_<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span>values_<span class="hl opt">));</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">disconnect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">);</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">emit</span><span class="hl opt">(</span><span class="hl num">42</span><span class="hl opt">);</span>

		<span class="hl kwa">if</span> <span class="hl opt">(</span>values_<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">] !=</span> <span class="hl num">0</span> <span class="hl opt">||</span> values_<span class="hl opt">[</span><span class="hl num">1</span><span class="hl opt">] !=</span> <span class="hl num">0</span> <span class="hl opt">||</span> values_<span class="hl opt">[</span><span class="hl num">2</span><span class="hl opt">] !=</span> <span class="hl num">0</span><span class="hl opt">) {</span>
			cout <span class="hl opt">&lt;&lt;</span> <span class="hl str">&quot;Signal object disconnection test failed&quot;</span> <span class="hl opt">&lt;&lt;</span> endl<span class="hl opt">;</span>
			<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
		<span class="hl opt">}</span>

		<span class="hl com">/* Test disconnection of a whole signal. */</span>
		<span class="hl kwd">memset</span><span class="hl opt">(</span>values_<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span>values_<span class="hl opt">));</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">connect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &amp;</span><span class="hl kwc">SignalTest</span><span class="hl opt">::</span>slotInteger1<span class="hl opt">);</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">connect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &amp;</span><span class="hl kwc">SignalTest</span><span class="hl opt">::</span>slotInteger2<span class="hl opt">);</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">disconnect</span><span class="hl opt">();</span>
		signalInt_<span class="hl opt">.</span><span class="hl kwd">emit</span><span class="hl opt">(</span><span class="hl num">42</span><span class="hl opt">);</span>

		<span class="hl kwa">if</span> <span class="hl opt">(</span>values_<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">] !=</span> <span class="hl num">0</span> <span class="hl opt">||</span> values_<span class="hl opt">[</span><span class="hl num">1</span><span class="hl opt">] !=</span> <span class="hl num">0</span> <span class="hl opt">||</span> values_<span class="hl opt">[</span><span class="hl num">2</span><span class="hl opt">] !=</span> <span class="hl num">0</span><span class="hl opt">) {</span>
			cout <span class="hl opt">&lt;&lt;</span> <span class="hl str">&quot;Signal object disconnection test failed&quot;</span> <span class="hl opt">&lt;&lt;</span> endl<span class="hl opt">;</span>
			<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
		<span class="hl opt">}</span>

		<span class="hl com">/* Test disconnection from slot. */</span>
		signalVoid_<span class="hl opt">.</span><span class="hl kwd">disconnect</span><span class="hl opt">();</span>
		signalVoid_<span class="hl opt">.</span><span class="hl kwd">connect</span><span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">, &amp;</span><span class="hl kwc">SignalTest</span><span class="hl opt">::</span>slotDisconnect<span class="hl opt">);</span>

		signalVoid_<span class="hl opt">.</span><span class="hl kwd">emit</span><span class="hl opt">();</span>
		called_ <span class="hl opt">=</span> <span class="hl kwa">false</span><span class="hl opt">;</span>
		signalVoid_<span class="hl opt">.</span><span class="hl kwd">emit</span><span class="hl opt">();</span>

		<span class="hl kwa">if</span> <span class="hl opt">(</span>called_<span class="hl opt">) {</span>
			cout <span class="hl opt">&lt;&lt;</span> <span class="hl str">&quot;Signal disconnection from slot test failed&quot;</span> <span class="hl opt">&lt;&lt;</span> endl<span class="hl opt">;</span>
			<span class="hl kwa">return</span> TestFail<span class="hl opt">;</span>
		<span class="hl opt">}</span>

		<span class="hl kwa">return</span> TestPass<span class="hl opt">;</span>
	<span class="hl opt">}</span>

	<span class="hl kwb">void</span> <span class="hl kwd">cleanup</span><span class="hl opt">()</span>
	<span class="hl opt">{</span>
	<span class="hl opt">}</span>

<span class="hl kwc">private</span><span class="hl opt">:</span>
	Signal<span class="hl opt">&lt;&gt;</span> signalVoid_<span class="hl opt">;</span>
	Signal<span class="hl opt">&lt;</span><span class="hl kwb">int</span><span class="hl opt">&gt;</span> signalInt_<span class="hl opt">;</span>
	Signal<span class="hl opt">&lt;</span><span class="hl kwb">int</span><span class="hl opt">,</span> <span class="hl kwb">const</span> <span class="hl kwc">std</span><span class="hl opt">::</span>string <span class="hl opt">&amp;&gt;</span> signalMultiArgs_<span class="hl opt">;</span>

	<span class="hl kwb">bool</span> called_<span class="hl opt">;</span>
	<span class="hl kwb">int</span> values_<span class="hl opt">[</span><span class="hl num">3</span><span class="hl opt">];</span>
	<span class="hl kwc">std</span><span class="hl opt">::</span>string name_<span class="hl opt">;</span>
<span class="hl opt">};</span>

<span class="hl kwd">TEST_REGISTER</span><span class="hl opt">(</span>SignalTest<span class="hl opt">)</span>
</code></pre></td></tr></table>
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