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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2018, Google Inc.
*
* media_device.h - Media device handler
*/
#ifndef __LIBCAMERA_MEDIA_DEVICE_H__
#define __LIBCAMERA_MEDIA_DEVICE_H__
#include <map>
#include <sstream>
#include <string>
#include <vector>
#include <linux/media.h>
#include "media_object.h"
namespace libcamera {
class MediaDevice
{
public:
MediaDevice(const std::string &devnode);
~MediaDevice();
bool acquire();
void release() { acquired_ = false; }
bool busy() const { return acquired_; }
int open();
void close();
int populate();
bool valid() const { return valid_; }
const std::string driver() const { return driver_; }
const std::string devnode() const { return devnode_; }
const std::vector<MediaEntity *> &entities() const { return entities_; }
MediaEntity *getEntityByName(const std::string &name) const;
MediaLink *link(const std::string &sourceName, unsigned int sourceIdx,
const std::string &sinkName, unsigned int sinkIdx);
MediaLink *link(const MediaEntity *source, unsigned int sourceIdx,
const MediaEntity *sink, unsigned int sinkIdx);
MediaLink *link(const MediaPad *source, const MediaPad *sink);
int disableLinks();
private:
std::string driver_;
std::string devnode_;
int fd_;
bool valid_;
bool acquired_;
std::map<unsigned int, MediaObject *> objects_;
MediaObject *object(unsigned int id);
bool addObject(MediaObject *object);
void clear();
std::vector<MediaEntity *> entities_;
struct media_v2_interface *findInterface(const struct media_v2_topology &topology,
unsigned int entityId);
bool populateEntities(const struct media_v2_topology &topology);
bool populatePads(const struct media_v2_topology &topology);
bool populateLinks(const struct media_v2_topology &topology);
friend int MediaLink::setEnabled(bool enable);
int setupLink(const MediaLink *link, unsigned int flags);
};
} /* namespace libcamera */
#endif /* __LIBCAMERA_MEDIA_DEVICE_H__ */
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