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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* ipa_vimc.cpp - Vimc Image Processing Algorithm module
*/
#include <libcamera/ipa/vimc_ipa_interface.h>
#include <fcntl.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <iostream>
#include <libcamera/ipa/ipa_interface.h>
#include <libcamera/ipa/ipa_module_info.h>
#include "libcamera/internal/file.h"
#include "libcamera/internal/log.h"
namespace libcamera {
LOG_DEFINE_CATEGORY(IPAVimc)
class IPAVimc : public ipa::vimc::IPAVimcInterface
{
public:
IPAVimc();
~IPAVimc();
int init(const IPASettings &settings) override;
int start() override;
void stop() override;
private:
void initTrace();
void trace(enum ipa::vimc::IPAOperationCode operation);
int fd_;
};
IPAVimc::IPAVimc()
: fd_(-1)
{
initTrace();
}
IPAVimc::~IPAVimc()
{
if (fd_ != -1)
::close(fd_);
}
int IPAVimc::init(const IPASettings &settings)
{
trace(ipa::vimc::IPAOperationInit);
LOG(IPAVimc, Debug)
<< "initializing vimc IPA with configuration file "
<< settings.configurationFile;
File conf(settings.configurationFile);
if (!conf.open(File::ReadOnly)) {
LOG(IPAVimc, Error) << "Failed to open configuration file";
return -EINVAL;
}
return 0;
}
int IPAVimc::start()
{
trace(ipa::vimc::IPAOperationStart);
LOG(IPAVimc, Debug) << "start vimc IPA!";
return 0;
}
void IPAVimc::stop()
{
trace(ipa::vimc::IPAOperationStop);
LOG(IPAVimc, Debug) << "stop vimc IPA!";
}
void IPAVimc::initTrace()
{
struct stat fifoStat;
int ret = stat(ipa::vimc::VimcIPAFIFOPath.c_str(), &fifoStat);
if (ret)
return;
ret = ::open(ipa::vimc::VimcIPAFIFOPath.c_str(), O_WRONLY);
if (ret < 0) {
ret = errno;
LOG(IPAVimc, Error) << "Failed to open vimc IPA test FIFO: "
<< strerror(ret);
return;
}
fd_ = ret;
}
void IPAVimc::trace(enum ipa::vimc::IPAOperationCode operation)
{
if (fd_ < 0)
return;
int ret = ::write(fd_, &operation, sizeof(operation));
if (ret < 0) {
ret = errno;
LOG(IPAVimc, Error) << "Failed to write to vimc IPA test FIFO: "
<< strerror(ret);
}
}
/*
* External IPA module interface
*/
extern "C" {
const struct IPAModuleInfo ipaModuleInfo = {
IPA_MODULE_API_VERSION,
0,
"PipelineHandlerVimc",
"vimc",
};
IPAInterface *ipaCreate()
{
return new IPAVimc();
}
}
} /* namespace libcamera */
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