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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2020, Google Inc.
*
* ipa_proxy_thread.cpp - Proxy running an Image Processing Algorithm in a thread
*/
#include <memory>
#include <ipa/ipa_interface.h>
#include <ipa/ipa_module_info.h>
#include "ipa_context_wrapper.h"
#include "ipa_module.h"
#include "ipa_proxy.h"
#include "log.h"
#include "thread.h"
namespace libcamera {
LOG_DECLARE_CATEGORY(IPAProxy)
class IPAProxyThread : public IPAProxy, public Object
{
public:
IPAProxyThread(IPAModule *ipam);
int init() override;
int start() override;
void stop() override;
void configure(const std::map<unsigned int, IPAStream> &streamConfig,
const std::map<unsigned int, const ControlInfoMap &> &entityControls) override;
void mapBuffers(const std::vector<IPABuffer> &buffers) override;
void unmapBuffers(const std::vector<unsigned int> &ids) override;
void processEvent(const IPAOperationData &event) override;
private:
void queueFrameAction(unsigned int frame, const IPAOperationData &data);
/* Helper class to invoke processEvent() in another thread. */
class ThreadProxy : public Object
{
public:
void setIPA(IPAInterface *ipa)
{
ipa_ = ipa;
}
int start()
{
return ipa_->start();
}
void stop()
{
ipa_->stop();
}
void processEvent(const IPAOperationData &event)
{
ipa_->processEvent(event);
}
private:
IPAInterface *ipa_;
};
bool running_;
Thread thread_;
ThreadProxy proxy_;
std::unique_ptr<IPAInterface> ipa_;
};
IPAProxyThread::IPAProxyThread(IPAModule *ipam)
: IPAProxy(ipam), running_(false)
{
if (!ipam->load())
return;
struct ipa_context *ctx = ipam->createContext();
if (!ctx) {
LOG(IPAProxy, Error)
<< "Failed to create IPA context for " << ipam->path();
return;
}
ipa_ = std::make_unique<IPAContextWrapper>(ctx);
proxy_.setIPA(ipa_.get());
/*
* Proxy the queueFrameAction signal to dispatch it in the caller's
* thread.
*/
ipa_->queueFrameAction.connect(this, &IPAProxyThread::queueFrameAction);
valid_ = true;
}
int IPAProxyThread::init()
{
int ret = ipa_->init();
if (ret)
return ret;
proxy_.moveToThread(&thread_);
return 0;
}
int IPAProxyThread::start()
{
running_ = true;
thread_.start();
return proxy_.invokeMethod(&ThreadProxy::start, ConnectionTypeBlocking);
}
void IPAProxyThread::stop()
{
running_ = false;
proxy_.invokeMethod(&ThreadProxy::stop, ConnectionTypeBlocking);
thread_.exit();
thread_.wait();
}
void IPAProxyThread::configure(const std::map<unsigned int, IPAStream> &streamConfig,
const std::map<unsigned int, const ControlInfoMap &> &entityControls)
{
ipa_->configure(streamConfig, entityControls);
}
void IPAProxyThread::mapBuffers(const std::vector<IPABuffer> &buffers)
{
ipa_->mapBuffers(buffers);
}
void IPAProxyThread::unmapBuffers(const std::vector<unsigned int> &ids)
{
ipa_->unmapBuffers(ids);
}
void IPAProxyThread::processEvent(const IPAOperationData &event)
{
if (!running_)
return;
/* Dispatch the processEvent() call to the thread. */
proxy_.invokeMethod(&ThreadProxy::processEvent, ConnectionTypeQueued,
event);
}
void IPAProxyThread::queueFrameAction(unsigned int frame, const IPAOperationData &data)
{
IPAInterface::queueFrameAction.emit(frame, data);
}
REGISTER_IPA_PROXY(IPAProxyThread)
} /* namespace libcamera */
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