Xavier Roumegue
5a8271ad70
Move the simple converter implementation to a generic V4L2 M2M class derived from the converter interface. This latter could be used by other pipeline implementations and as base class for customized V4L2 M2M converters. Signed-off-by: Xavier Roumegue <xavier.roumegue@oss.nxp.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
|
/*
|
|
* Copyright (C) 2020, Laurent Pinchart
|
|
* Copyright 2022 NXP
|
|
*
|
|
* converter_v4l2_m2m.h - V4l2 M2M Format converter interface
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <functional>
|
|
#include <map>
|
|
#include <memory>
|
|
#include <string>
|
|
#include <tuple>
|
|
#include <vector>
|
|
|
|
#include <libcamera/base/log.h>
|
|
#include <libcamera/base/signal.h>
|
|
|
|
#include <libcamera/pixel_format.h>
|
|
|
|
#include "libcamera/internal/converter.h"
|
|
|
|
namespace libcamera {
|
|
|
|
class FrameBuffer;
|
|
class MediaDevice;
|
|
class Size;
|
|
class SizeRange;
|
|
struct StreamConfiguration;
|
|
class V4L2M2MDevice;
|
|
|
|
class V4L2M2MConverter : public Converter
|
|
{
|
|
public:
|
|
V4L2M2MConverter(MediaDevice *media);
|
|
|
|
int loadConfiguration([[maybe_unused]] const std::string &filename) { return 0; }
|
|
bool isValid() const { return m2m_ != nullptr; }
|
|
|
|
std::vector<PixelFormat> formats(PixelFormat input);
|
|
SizeRange sizes(const Size &input);
|
|
|
|
std::tuple<unsigned int, unsigned int>
|
|
strideAndFrameSize(const PixelFormat &pixelFormat, const Size &size);
|
|
|
|
int configure(const StreamConfiguration &inputCfg,
|
|
const std::vector<std::reference_wrapper<StreamConfiguration>> &outputCfg);
|
|
int exportBuffers(unsigned int ouput, unsigned int count,
|
|
std::vector<std::unique_ptr<FrameBuffer>> *buffers);
|
|
|
|
int start();
|
|
void stop();
|
|
|
|
int queueBuffers(FrameBuffer *input,
|
|
const std::map<unsigned int, FrameBuffer *> &outputs);
|
|
|
|
private:
|
|
class Stream : protected Loggable
|
|
{
|
|
public:
|
|
Stream(V4L2M2MConverter *converter, unsigned int index);
|
|
|
|
bool isValid() const { return m2m_ != nullptr; }
|
|
|
|
int configure(const StreamConfiguration &inputCfg,
|
|
const StreamConfiguration &outputCfg);
|
|
int exportBuffers(unsigned int count,
|
|
std::vector<std::unique_ptr<FrameBuffer>> *buffers);
|
|
|
|
int start();
|
|
void stop();
|
|
|
|
int queueBuffers(FrameBuffer *input, FrameBuffer *output);
|
|
|
|
protected:
|
|
std::string logPrefix() const override;
|
|
|
|
private:
|
|
void captureBufferReady(FrameBuffer *buffer);
|
|
void outputBufferReady(FrameBuffer *buffer);
|
|
|
|
V4L2M2MConverter *converter_;
|
|
unsigned int index_;
|
|
std::unique_ptr<V4L2M2MDevice> m2m_;
|
|
|
|
unsigned int inputBufferCount_;
|
|
unsigned int outputBufferCount_;
|
|
};
|
|
|
|
std::unique_ptr<V4L2M2MDevice> m2m_;
|
|
|
|
std::vector<Stream> streams_;
|
|
std::map<FrameBuffer *, unsigned int> queue_;
|
|
};
|
|
|
|
} /* namespace libcamera */
|