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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 <algorithm>
#include <array>
#include <iomanip>
#include <tuple>
#include <linux/media-bus-format.h>
#include <ipa/ipa_interface.h>
#include <ipa/ipa_module_info.h>
#include <libcamera/camera.h>
#include <libcamera/control_ids.h>
#include <libcamera/controls.h>
#include <libcamera/request.h>
#include <libcamera/stream.h>
#include "camera_sensor.h"
#include "device_enumerator.h"
#include "ipa_manager.h"
#include "log.h"
#include "media_device.h"
#include "pipeline_handler.h"
#include "utils.h"
#include "v4l2_controls.h"
#include "v4l2_subdevice.h"
#include "v4l2_videodevice.h"
namespace libcamera {
LOG_DEFINE_CATEGORY(VIMC)
class VimcCameraData : public CameraData
{
public:
VimcCameraData(PipelineHandler *pipe)
: CameraData(pipe), sensor_(nullptr), debayer_(nullptr),
scaler_(nullptr), video_(nullptr), raw_(nullptr)
{
}
~VimcCameraData()
{
delete sensor_;
delete debayer_;
delete scaler_;
delete video_;
delete raw_;
}
int init(MediaDevice *media);
void bufferReady(Buffer *buffer);
CameraSensor *sensor_;
V4L2Subdevice *debayer_;
V4L2Subdevice *scaler_;
V4L2VideoDevice *video_;
V4L2VideoDevice *raw_;
Stream stream_;
};
class VimcCameraConfiguration : public CameraConfiguration
{
public:
VimcCameraConfiguration();
Status validate() override;
};
class PipelineHandlerVimc : public PipelineHandler
{
public:
PipelineHandlerVimc(CameraManager *manager);
CameraConfiguration *generateConfiguration(Camera *camera,
const StreamRoles &roles) override;
int configure(Camera *camera, CameraConfiguration *config) override;
int allocateBuffers(Camera *camera,
const std::set<Stream *> &streams) override;
int freeBuffers(Camera *camera,
const std::set<Stream *> &streams) override;
int start(Camera *camera) override;
void stop(Camera *camera) override;
int queueRequest(Camera *camera, Request *request) override;
bool match(DeviceEnumerator *enumerator) override;
private:
int processControls(VimcCameraData *data, Request *request);
VimcCameraData *cameraData(const Camera *camera)
{
return static_cast<VimcCameraData *>(
PipelineHandler::cameraData(camera));
}
};
VimcCameraConfiguration::VimcCameraConfiguration()
: CameraConfiguration()
{
}
CameraConfiguration::Status VimcCameraConfiguration::validate()
{
static const std::array<unsigned int, 3> formats{
V4L2_PIX_FMT_BGR24,
V4L2_PIX_FMT_RGB24,
V4L2_PIX_FMT_ARGB32,
};
Status status = Valid;
if (config_.empty())
return Invalid;
/* Cap the number of entries to the available streams. */
if (config_.size() > 1) {
config_.resize(1);
status = Adjusted;
}
StreamConfiguration &cfg = config_[0];
/* Adjust the pixel format. */
if (std::find(formats.begin(), formats.end(), cfg.pixelFormat) ==
formats.end()) {
LOG(VIMC, Debug) << "Adjusting format to RGB24";
cfg.pixelFormat = V4L2_PIX_FMT_RGB24;
status = Adjusted;
}
/* Clamp the size based on the device limits. */
const Size size = cfg.size;
/* The scaler hardcodes a x3 scale-up ratio. */
cfg.size.width = std::max(48U, std::min(4096U, cfg.size.width));
cfg.size.height = std::max(48U, std::min(2160U, cfg.size.height));
cfg.size.width -= cfg.size.width % 3;
cfg.size.height -= cfg.size.height % 3;
if (cfg.size != size) {
LOG(VIMC, Debug)
<< "Adjusting size to " << cfg.size.toString();
status = Adjusted;
}
cfg.bufferCount = 4;
return status;
}
PipelineHandlerVimc::PipelineHandlerVimc(CameraManager *manager)
: PipelineHandler(manager)
{
}
CameraConfiguration *PipelineHandlerVimc::generateConfiguration(Camera *camera,
const StreamRoles &roles)
{
CameraConfiguration *config = new VimcCameraConfiguration();
if (roles.empty())
return config;
StreamConfiguration cfg{};
cfg.pixelFormat = V4L2_PIX_FMT_RGB24;
cfg.size = { 1920, 1080 };
cfg.bufferCount = 4;
config->addConfiguration(cfg);
config->validate();
return config;
}
int PipelineHandlerVimc::configure(Camera *camera, CameraConfiguration *config)
{
VimcCameraData *data = cameraData(camera);
StreamConfiguration &cfg = config->at(0);
int ret;
/* The scaler hardcodes a x3 scale-up ratio. */
V4L2SubdeviceFormat subformat = {};
subformat.mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8;
subformat.size = { cfg.size.width / 3, cfg.size.height / 3 };
ret = data->sensor_->setFormat(&subformat);
if (ret)
return ret;
ret = data->debayer_->setFormat(0, &subformat);
if (ret)
return ret;
subformat.mbus_code = MEDIA_BUS_FMT_RGB888_1X24;
ret = data->debayer_->setFormat(1, &subformat);
if (ret)
return ret;
ret = data->scaler_->setFormat(0, &subformat);
if (ret)
return ret;
subformat.size = cfg.size;
ret = data->scaler_->setFormat(1, &subformat);
if (ret)
return ret;
V4L2DeviceFormat format = {};
format.fourcc = cfg.pixelFormat;
format.size = cfg.size;
ret = data->video_->setFormat(&format);
if (ret)
return ret;
if (format.size != cfg.size ||
format.fourcc != cfg.pixelFormat)
return -EINVAL;
/*
* Format has to be set on the raw capture video node, otherwise the
* vimc driver will fail pipeline validation.
*/
format.fourcc = V4L2_PIX_FMT_SGRBG8;
format.size = { cfg.size.width / 3, cfg.size.height / 3 };
ret = data->raw_->setFormat(&format);
if (ret)
return ret;
cfg.setStream(&data->stream_);
return 0;
}
int PipelineHandlerVimc::allocateBuffers(Camera *camera,
const std::set<Stream *> &streams)
{
VimcCameraData *data = cameraData(camera);
Stream *stream = *streams.begin();
const StreamConfiguration &cfg = stream->configuration();
LOG(VIMC, Debug) << "Requesting " << cfg.bufferCount << " buffers";
if (stream->memoryType() == InternalMemory)
return data->video_->exportBuffers(&stream->bufferPool());
else
return data->video_->importBuffers(&stream->bufferPool());
}
int PipelineHandlerVimc::freeBuffers(Camera *camera,
const std::set<Stream *> &streams)
{
VimcCameraData *data = cameraData(camera);
return data->video_->releaseBuffers();
}
int PipelineHandlerVimc::start(Camera *camera)
{
VimcCameraData *data = cameraData(camera);
return data->video_->streamOn();
}
void PipelineHandlerVimc::stop(Camera *camera)
{
VimcCameraData *data = cameraData(camera);
data->video_->streamOff();
}
int PipelineHandlerVimc::processControls(VimcCameraData *data, Request *request)
{
V4L2ControlList controls(data->sensor_->controls());
for (auto it : request->controls()) {
const ControlId &id = *it.first;
ControlValue &value = it.second;
if (id == controls::Brightness)
controls.set(V4L2_CID_BRIGHTNESS, value);
else if (id == controls::Contrast)
controls.set(V4L2_CID_CONTRAST, value);
else if (id == controls::Saturation)
controls.set(V4L2_CID_SATURATION, value);
}
for (const auto &ctrl : controls)
LOG(VIMC, Debug)
<< "Setting control " << ctrl.first->name()
<< " to " << ctrl.second.toString();
int ret = data->sensor_->setControls(&controls);
if (ret) {
LOG(VIMC, Error) << "Failed to set controls: " << ret;
return ret < 0 ? ret : -EINVAL;
}
return ret;
}
int PipelineHandlerVimc::queueRequest(Camera *camera, Request *request)
{
VimcCameraData *data = cameraData(camera);
Buffer *buffer = request->findBuffer(&data->stream_);
if (!buffer) {
LOG(VIMC, Error)
<< "Attempt to queue request with invalid stream";
return -ENOENT;
}
int ret = processControls(data, request);
if (ret < 0)
return ret;
ret = data->video_->queueBuffer(buffer);
if (ret < 0)
return ret;
PipelineHandler::queueRequest(camera, request);
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");
MediaDevice *media = acquireMediaDevice(enumerator, dm);
if (!media)
return false;
std::unique_ptr<VimcCameraData> data = utils::make_unique<VimcCameraData>(this);
data->ipa_ = IPAManager::instance()->createIPA(this, 0, 0);
if (data->ipa_ == nullptr)
LOG(VIMC, Warning) << "no matching IPA found";
else
data->ipa_->init();
/* Locate and open the capture video node. */
if (data->init(media))
return false;
/* Create and register the camera. */
std::set<Stream *> streams{ &data->stream_ };
std::shared_ptr<Camera> camera = Camera::create(this, "VIMC Sensor B",
streams);
registerCamera(std::move(camera), std::move(data));
return true;
}
int VimcCameraData::init(MediaDevice *media)
{
int ret;
ret = media->disableLinks();
if (ret < 0)
return ret;
MediaLink *link = media->link("Debayer B", 1, "Scaler", 0);
if (!link)
return -ENODEV;
ret = link->setEnabled(true);
if (ret < 0)
return ret;
/* Create and open the camera sensor, debayer, scaler and video device. */
sensor_ = new CameraSensor(media->getEntityByName("Sensor B"));
ret = sensor_->init();
if (ret)
return ret;
debayer_ = new V4L2Subdevice(media->getEntityByName("Debayer B"));
if (debayer_->open())
return -ENODEV;
scaler_ = new V4L2Subdevice(media->getEntityByName("Scaler"));
if (scaler_->open())
return -ENODEV;
video_ = new V4L2VideoDevice(media->getEntityByName("RGB/YUV Capture"));
if (video_->open())
return -ENODEV;
video_->bufferReady.connect(this, &VimcCameraData::bufferReady);
raw_ = new V4L2VideoDevice(media->getEntityByName("Raw Capture 1"));
if (raw_->open())
return -ENODEV;
/* Initialise the supported controls. */
const V4L2ControlInfoMap &controls = sensor_->controls();
for (const auto &ctrl : controls) {
const V4L2ControlRange &range = ctrl.second;
const ControlId *id;
switch (ctrl.first->id()) {
case V4L2_CID_BRIGHTNESS:
id = &controls::Brightness;
break;
case V4L2_CID_CONTRAST:
id = &controls::Contrast;
break;
case V4L2_CID_SATURATION:
id = &controls::Saturation;
break;
default:
continue;
}
controlInfo_.emplace(std::piecewise_construct,
std::forward_as_tuple(id),
std::forward_as_tuple(range));
}
return 0;
}
void VimcCameraData::bufferReady(Buffer *buffer)
{
Request *request = buffer->request();
pipe_->completeBuffer(camera_, request, buffer);
pipe_->completeRequest(camera_, request);
}
REGISTER_PIPELINE_HANDLER(PipelineHandlerVimc);
} /* namespace libcamera */
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