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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* cio2.h - Intel IPU3 CIO2
*/
#pragma once
#include <memory>
#include <queue>
#include <vector>
#include <libcamera/base/signal.h>
#include "libcamera/internal/v4l2_subdevice.h"
#include "libcamera/internal/v4l2_videodevice.h"
namespace libcamera {
class CameraSensor;
class FrameBuffer;
class MediaDevice;
class PixelFormat;
class Request;
class Size;
class SizeRange;
struct StreamConfiguration;
enum class Transform;
class CIO2Device
{
public:
static constexpr unsigned int kBufferCount = 4;
CIO2Device();
std::vector<PixelFormat> formats() const;
std::vector<SizeRange> sizes(const PixelFormat &format) const;
int init(const MediaDevice *media, unsigned int index);
int configure(const Size &size, const Transform &transform,
V4L2DeviceFormat *outputFormat);
StreamConfiguration generateConfiguration(Size size) const;
int exportBuffers(unsigned int count,
std::vector<std::unique_ptr<FrameBuffer>> *buffers);
V4L2SubdeviceFormat getSensorFormat(const std::vector<unsigned int> &mbusCodes,
const Size &size) const;
int start();
int stop();
CameraSensor *sensor() { return sensor_.get(); }
const CameraSensor *sensor() const { return sensor_.get(); }
FrameBuffer *queueBuffer(Request *request, FrameBuffer *rawBuffer);
void tryReturnBuffer(FrameBuffer *buffer);
Signal<FrameBuffer *> &bufferReady() { return output_->bufferReady; }
Signal<uint32_t> &frameStart() { return csi2_->frameStart; }
Signal<> bufferAvailable;
private:
void freeBuffers();
void cio2BufferReady(FrameBuffer *buffer);
std::unique_ptr<CameraSensor> sensor_;
std::unique_ptr<V4L2Subdevice> csi2_;
std::unique_ptr<V4L2VideoDevice> output_;
std::vector<std::unique_ptr<FrameBuffer>> buffers_;
std::queue<FrameBuffer *> availableBuffers_;
};
} /* namespace libcamera */
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