#ifndef OPENSHOT_FFMPEG_UTILITIES_H
#define OPENSHOT_FFMPEG_UTILITIES_H

	// Required for libavformat to build on Windows
	#ifndef INT64_C
	#define INT64_C(c) (c ## LL)
	#define UINT64_C(c) (c ## ULL)
	#endif

	// Include the FFmpeg headers
	extern "C" {
		#include <libavcodec/avcodec.h>
		#include <libavformat/avformat.h>
		#include <libswscale/swscale.h>
		#include <libavutil/mathematics.h>

		// libavutil changed folders at some point
		#if LIBAVFORMAT_VERSION_MAJOR >= 53
			#include <libavutil/opt.h>
		#else
			#include <libavcodec/opt.h>
		#endif

	}

	// This was removed from newer versions of FFmpeg (but still used in libopenshot)
	#ifndef AVCODEC_MAX_AUDIO_FRAME_SIZE
		#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000 // 1 second of 48khz 32bit audio
	#endif
	#ifndef AV_ERROR_MAX_STRING_SIZE
		#define AV_ERROR_MAX_STRING_SIZE 64
	#endif

	// This wraps an unsafe C macro to be C++ compatible function
	static const std::string av_make_error_string(int errnum)
	{
		char errbuf[AV_ERROR_MAX_STRING_SIZE];
		av_strerror(errnum, errbuf, AV_ERROR_MAX_STRING_SIZE);
		return (std::string)errbuf;
	}

	// Redefine the C macro to use our new C++ function
	#undef av_err2str
	#define av_err2str(errnum) av_make_error_string(errnum).c_str()

#endif