#pragma once

#include "av_base.hpp"

extern "C" {
#include <libavutil/pixfmt.h>

typedef struct AVDictionary AVDictionary;
typedef struct AVFormatContext AVFormatContext;
typedef struct AVInputFormat AVInputFormat;
typedef struct AVCodecContext AVCodecContext;
typedef struct AVCodec AVCodec;
typedef struct AVPacket AVPacket;
typedef struct AVFrame AVFrame;
}

#include <memory>

namespace av {
	// AVFormatContext related
	using format_context = av::unique_ptr<AVFormatContext>;
	format_context format_open_input(std::string const & filename, AVInputFormat* format, AVDictionary** options);
	format_context format_alloc_context();

	// AVCodec related
	using open_codec = av::unique_ptr<AVCodecContext>;
	open_codec codec_open(AVCodecContext* ctx, AVCodec* codec, AVDictionary** options);

	// AVPacket related (this is somewhat strange, but matches the usecase)
	// I need to rethink this
	using packet_buffer = AVPacket;
	using packet = av::unique_ptr<AVPacket>;
	packet read_frame(format_context & ctx, packet_buffer & p);

	// AVFrame related
	using frame = av::unique_ptr<AVFrame>;
	frame frame_alloc();
	frame frame_clone(frame const & f); // creates a clone with the *same* buffer
	AVPixelFormat get_format(frame const & f);

	// Does not copy data, it acts as a view
	void crop(frame & f, int left, int top, int width, int height);
	frame crop(frame && f, int left, int top, int width, int height);
	frame crop(frame const & f, int left, int top, int width, int height);
}