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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* vimc.cpp - Pipeline handler for the vimc device
*/
#include <libcamera/camera.h>
#include <libcamera/request.h>
#include <libcamera/stream.h>
#include "device_enumerator.h"
#include "log.h"
#include "media_device.h"
#include "pipeline_handler.h"
#include "v4l2_device.h"
namespace libcamera {
LOG_DEFINE_CATEGORY(VIMC)
class PipelineHandlerVimc : public PipelineHandler
{
public:
PipelineHandlerVimc(CameraManager *manager);
~PipelineHandlerVimc();
std::map<Stream *, StreamConfiguration>
streamConfiguration(Camera *camera,
std::vector<Stream *> &streams) override;
int configureStreams(Camera *camera,
std::map<Stream *, StreamConfiguration> &config) override;
int allocateBuffers(Camera *camera, Stream *stream) override;
int freeBuffers(Camera *camera, Stream *stream) override;
int start(const Camera *camera) override;
void stop(const Camera *camera) override;
int queueRequest(const Camera *camera, Request *request) override;
bool match(DeviceEnumerator *enumerator);
private:
std::shared_ptr<MediaDevice> media_;
V4L2Device *video_;
Stream stream_;
};
PipelineHandlerVimc::PipelineHandlerVimc(CameraManager *manager)
: PipelineHandler(manager), media_(nullptr), video_(nullptr)
{
}
PipelineHandlerVimc::~PipelineHandlerVimc()
{
delete video_;
if (media_)
media_->release();
}
std::map<Stream *, StreamConfiguration>
PipelineHandlerVimc::streamConfiguration(Camera *camera,
std::vector<Stream *> &streams)
{
std::map<Stream *, StreamConfiguration> configs;
StreamConfiguration config{};
LOG(VIMC, Debug) << "Retrieving default format";
config.width = 640;
config.height = 480;
config.pixelFormat = V4L2_PIX_FMT_RGB24;
config.bufferCount = 4;
configs[&stream_] = config;
return configs;
}
int PipelineHandlerVimc::configureStreams(Camera *camera,
std::map<Stream *, StreamConfiguration> &config)
{
StreamConfiguration *cfg = &config[&stream_];
LOG(VIMC, Debug) << "Configure the camera for resolution "
<< cfg->width << "x" << cfg->height;
V4L2DeviceFormat format = {};
format.width = cfg->width;
format.height = cfg->height;
format.fourcc = cfg->pixelFormat;
return video_->setFormat(&format);
}
int PipelineHandlerVimc::allocateBuffers(Camera *camera, Stream *stream)
{
const StreamConfiguration &cfg = stream->configuration();
LOG(VIMC, Debug) << "Requesting " << cfg.bufferCount << " buffers";
return video_->exportBuffers(&stream->bufferPool());
}
int PipelineHandlerVimc::freeBuffers(Camera *camera, Stream *stream)
{
return video_->releaseBuffers();
}
int PipelineHandlerVimc::start(const Camera *camera)
{
return video_->streamOn();
}
void PipelineHandlerVimc::stop(const Camera *camera)
{
video_->streamOff();
}
int PipelineHandlerVimc::queueRequest(const Camera *camera, Request *request)
{
Buffer *buffer = request->findBuffer(&stream_);
if (!buffer) {
LOG(VIMC, Error)
<< "Attempt to queue request with invalid stream";
return -ENOENT;
}
video_->queueBuffer(buffer);
return 0;
}
bool PipelineHandlerVimc::match(DeviceEnumerator *enumerator)
{
DeviceMatch dm("vimc");
dm.add("Raw Capture 0");
dm.add("Raw Capture 1");
dm.add("RGB/YUV Capture");
dm.add("Sensor A");
dm.add("Sensor B");
dm.add("Debayer A");
dm.add("Debayer B");
dm.add("RGB/YUV Input");
dm.add("Scaler");
media_ = enumerator->search(dm);
if (!media_)
return false;
media_->acquire();
video_ = new V4L2Device(media_->getEntityByName("Raw Capture 1"));
if (video_->open()) {
media_->release();
return false;
}
std::vector<Stream *> streams{ &stream_ };
std::shared_ptr<Camera> camera = Camera::create(this, "VIMC Sensor B",
streams);
registerCamera(std::move(camera));
return true;
}
REGISTER_PIPELINE_HANDLER(PipelineHandlerVimc);
} /* namespace libcamera */
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