/**
	This file is a part of rexy's matrix client
	Copyright (C) 2019-2020 rexy712

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU Affero General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Affero General Public License for more details.

	You should have received a copy of the GNU Affero General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef LIBAV_PACKET_HPP
#define LIBAV_PACKET_HPP

#include "libav/libav.hpp"

extern "C"{
#  include <libavcodec/avcodec.h>
}

#include <utility> //exchange

namespace libav{

	class packet
	{
	private:
		AVPacket* m_pkt;
	public:
		packet(void):
			m_pkt(av_packet_alloc())
		{
			if(m_pkt){
				m_pkt->data = nullptr;
				m_pkt->size = 0;
			}
		}
		packet(const packet&) = delete;
		packet(packet&& p)noexcept:
			m_pkt(std::exchange(p.m_pkt, nullptr)){}
		constexpr packet(AVPacket* pkt):
			m_pkt(pkt){}

		~packet(void){
			reset();
		}

		packet& operator=(const packet&) = delete;
		packet& operator=(packet&& p)noexcept{
			std::swap(m_pkt, p.m_pkt);
			return *this;
		}
		void reset(AVPacket* packet = nullptr){
			if(m_pkt)
				av_packet_free(&m_pkt);
			m_pkt = packet;
		}
		AVPacket* release(void){
			return std::exchange(m_pkt, nullptr);
		}

		AVPacket* operator->(void){
			return m_pkt;
		}
		const AVPacket* operator->(void)const{
			return m_pkt;
		}

		AVPacket* get(void){
			return m_pkt;
		}
		const AVPacket* get(void)const{
			return m_pkt;
		}
		operator AVPacket*(void){
			return m_pkt;
		}
		operator const AVPacket*(void)const{
			return m_pkt;
		}
		operator bool(void)const{
			return m_pkt;
		}

	};

}

#endif