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/**************************************************************************/
/* camera_feed_linux.h */
/**************************************************************************/
/* This file is part of: */
/* REDOT ENGINE */
/* https://redotengine.org */
/**************************************************************************/
/* Copyright (c) 2024-present Redot Engine contributors */
/* (see REDOT_AUTHORS.md) */
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#ifndef CAMERA_FEED_LINUX_H
#define CAMERA_FEED_LINUX_H
#include "buffer_decoder.h"
#include "core/os/thread.h"
#include "servers/camera/camera_feed.h"
#include <linux/videodev2.h>
struct StreamingBuffer;
class CameraFeedLinux : public CameraFeed {
private:
SafeFlag exit_flag;
Thread *thread = nullptr;
String device_name;
int file_descriptor = -1;
StreamingBuffer *buffers = nullptr;
unsigned int buffer_count = 0;
BufferDecoder *buffer_decoder = nullptr;
static void update_buffer_thread_func(void *p_func);
void _update_buffer();
void _query_device(const String &p_device_name);
void _add_format(v4l2_fmtdesc description, v4l2_frmsize_discrete size, int frame_numerator, int frame_denominator);
bool _request_buffers();
bool _start_capturing();
void _read_frame();
void _stop_capturing();
void _unmap_buffers(unsigned int p_count);
BufferDecoder *_create_buffer_decoder();
void _start_thread();
public:
String get_device_name() const;
bool activate_feed();
void deactivate_feed();
bool set_format(int p_index, const Dictionary &p_parameters);
Array get_formats() const;
FeedFormat get_format() const;
CameraFeedLinux(const String &p_device_name);
virtual ~CameraFeedLinux();
};
#endif // CAMERA_FEED_LINUX_H
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