Add Patch 1001897 by Martin. Disabled modem and ipx networking by default as they depend on libraries not everybody may have. Reduces alarmed firewall people and is nicer on unix hosts as port 23 is a bit tricky

Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1904

src/dos/cdrom.h

@@ -5,10 +5,17 @@
 #define MAX_ASPI_CDROM	5
 
 #include <string.h>
+#include <iostream>
+#include <vector>
 #include "dosbox.h"
 #include "mem.h"
+#include "mixer.h"
 #include "SDL.h"
+#include "SDL_thread.h"
 
+#if defined(C_SDL_SOUND)
+#include "SDL_sound.h"
+#endif
 
 #define RAW_SECTOR_SIZE		2352
 #define COOKED_SECTOR_SIZE	2048
@@ -95,6 +102,106 @@ public:
 	bool	LoadUnloadMedia		(bool unload) { return true; };
 };	
 
+class CDROM_Interface_Image : public CDROM_Interface
+{
+private:
+	class TrackFile {
+	public:
+		virtual bool read(Bit8u *buffer, int seek, int count) = 0;
+		virtual int getLength() = 0;
+	};
+	
+	class BinaryFile : public TrackFile {
+	public:
+		BinaryFile(const char *filename, bool &error);
+		~BinaryFile();
+		bool read(Bit8u *buffer, int seek, int count);
+		int getLength();
+	private:
+		BinaryFile();
+		std::ifstream *file;
+	};
+	
+	#if defined(C_SDL_SOUND)
+	class AudioFile : public TrackFile {
+	public:
+		AudioFile(const char *filename, bool &error);
+		~AudioFile();
+		bool read(Bit8u *buffer, int seek, int count);
+		int getLength();
+	private:
+		AudioFile();
+		Sound_Sample *sample;
+		int lastCount;
+		int lastSeek;
+	};
+	#endif
+	
+	struct Track {
+		int number;
+		int attr;
+		int start;
+		int length;
+		int skip;
+		int sectorSize;
+		bool mode2;
+		TrackFile *file;
+	};
+	
+public:
+	CDROM_Interface_Image		(Bit8u subUnit);
+	virtual ~CDROM_Interface_Image	(void);
+	void	InitNewMedia		(void);
+	bool	SetDevice		(char* path, int forceCD);
+	bool	GetUPC			(unsigned char& attr, char* upc);
+	bool	GetAudioTracks		(int& stTrack, int& end, TMSF& leadOut);
+	bool	GetAudioTrackInfo	(int track, TMSF& start, unsigned char& attr);
+	bool	GetAudioSub		(unsigned char& attr, unsigned char& track, unsigned char& index, TMSF& relPos, TMSF& absPos);
+	bool	GetAudioStatus		(bool& playing, bool& pause);
+	bool	GetMediaTrayStatus	(bool& mediaPresent, bool& mediaChanged, bool& trayOpen);
+	bool	PlayAudioSector		(unsigned long start,unsigned long len);
+	bool	PauseAudio		(bool resume);
+	bool	StopAudio		(void);
+	bool	ReadSectors		(PhysPt buffer, bool raw, unsigned long sector, unsigned long num);
+	bool	LoadUnloadMedia		(bool unload);
+	bool	ReadSector		(Bit8u *buffer, bool raw, unsigned long sector);
+	
+static	CDROM_Interface_Image* images[26];
+
+private:
+	// player
+static	void	CDAudioCallBack(Bit8u *stream, Bit32u len);
+	int	GetTrack(int sector);
+
+static  struct imagePlayer {
+		CDROM_Interface_Image *cd;
+		MIXER_Channel   *channel;
+		SDL_mutex 	*mutex;
+		Bit8u   buffer[8192];
+		int     bufLen;
+		int     currFrame;	
+		int     targetFrame;
+		bool    isPlaying;
+		bool    isPaused;
+	} player;
+	
+	void 	ClearTracks();
+	bool	LoadIsoFile(char *filename);
+	bool	CanReadPVD(TrackFile *file, int sectorSize, bool mode2);
+	// cue sheet processing
+	bool	LoadCueSheet(char *cuefile);
+	bool	GetRealFileName(std::string& filename, std::string& pathname);
+	bool	GetCueKeyword(std::string &keyword, std::istream &in);
+	bool	GetCueFrame(int &frames, std::istream &in);
+	bool	GetCueString(std::string &str, std::istream &in);
+	bool	AddTrack(Track &curr, int &shift, int prestart, int &totalPregap, int currPregap);
+
+static	int	refCount;
+	std::vector<Track>	tracks;
+	std::string	mcn;
+	Bit8u	subUnit;
+};
+
 #if defined (WIN32)	/* Win 32 */
 
 #define WIN32_LEAN_AND_MEAN		// Exclude rarely-used stuff from Windows headers