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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* imgu.h - Intel IPU3 ImgU
*/
#pragma once
#include <memory>
#include <string>
#include "libcamera/internal/v4l2_subdevice.h"
#include "libcamera/internal/v4l2_videodevice.h"
namespace libcamera {
class FrameBuffer;
class MediaDevice;
class Size;
struct StreamConfiguration;
class ImgUDevice
{
public:
static constexpr unsigned int kFilterWidth = 4;
static constexpr unsigned int kFilterHeight = 4;
static constexpr unsigned int kIFAlignWidth = 2;
static constexpr unsigned int kIFAlignHeight = 4;
static constexpr unsigned int kIFMaxCropWidth = 40;
static constexpr unsigned int kIFMaxCropHeight = 540;
static constexpr unsigned int kBDSAlignWidth = 2;
static constexpr unsigned int kBDSAlignHeight = 4;
static constexpr float kBDSSfMax = 2.5;
static constexpr float kBDSSfMin = 1.0;
static constexpr float kBDSSfStep = 0.03125;
static constexpr Size kOutputMinSize = { 2, 2 };
static constexpr Size kOutputMaxSize = { 4480, 34004 };
static constexpr unsigned int kOutputAlignWidth = 64;
static constexpr unsigned int kOutputAlignHeight = 4;
static constexpr unsigned int kOutputMarginWidth = 64;
static constexpr unsigned int kOutputMarginHeight = 32;
struct PipeConfig {
float bds_sf;
Size iif;
Size bds;
Size gdc;
bool isNull() const
{
return iif.isNull() || bds.isNull() || gdc.isNull();
}
};
struct Pipe {
Size input;
Size main;
Size viewfinder;
};
int init(MediaDevice *media, unsigned int index);
PipeConfig calculatePipeConfig(Pipe *pipe);
int configure(const PipeConfig &pipeConfig, V4L2DeviceFormat *inputFormat);
int configureOutput(const StreamConfiguration &cfg,
V4L2DeviceFormat *outputFormat)
{
return configureVideoDevice(output_.get(), PAD_OUTPUT, cfg,
outputFormat);
}
int configureViewfinder(const StreamConfiguration &cfg,
V4L2DeviceFormat *outputFormat)
{
return configureVideoDevice(viewfinder_.get(), PAD_VF, cfg,
outputFormat);
}
int allocateBuffers(unsigned int bufferCount);
void freeBuffers();
int start();
int stop();
int enableLinks(bool enable);
std::unique_ptr<V4L2Subdevice> imgu_;
std::unique_ptr<V4L2VideoDevice> input_;
std::unique_ptr<V4L2VideoDevice> param_;
std::unique_ptr<V4L2VideoDevice> output_;
std::unique_ptr<V4L2VideoDevice> viewfinder_;
std::unique_ptr<V4L2VideoDevice> stat_;
std::vector<std::unique_ptr<FrameBuffer>> paramBuffers_;
std::vector<std::unique_ptr<FrameBuffer>> statBuffers_;
private:
static constexpr unsigned int PAD_INPUT = 0;
static constexpr unsigned int PAD_PARAM = 1;
static constexpr unsigned int PAD_OUTPUT = 2;
static constexpr unsigned int PAD_VF = 3;
static constexpr unsigned int PAD_STAT = 4;
int linkSetup(const std::string &source, unsigned int sourcePad,
const std::string &sink, unsigned int sinkPad,
bool enable);
int configureVideoDevice(V4L2VideoDevice *dev, unsigned int pad,
const StreamConfiguration &cfg,
V4L2DeviceFormat *outputFormat);
std::string name_;
MediaDevice *media_;
};
} /* namespace libcamera */
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